CA2474892C - Information recording medium, method of configuring version information thereof, recording and reproducing method using the same, and recording and reproducing apparatus thereof - Google Patents
Information recording medium, method of configuring version information thereof, recording and reproducing method using the same, and recording and reproducing apparatus thereof Download PDFInfo
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- CA2474892C CA2474892C CA2474892A CA2474892A CA2474892C CA 2474892 C CA2474892 C CA 2474892C CA 2474892 A CA2474892 A CA 2474892A CA 2474892 A CA2474892 A CA 2474892A CA 2474892 C CA2474892 C CA 2474892C
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- information
- version information
- recording medium
- optical recording
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Classifications
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/007—Arrangement of the information on the record carrier, e.g. form of tracks, actual track shape, e.g. wobbled, or cross-section, e.g. v-shaped; Sequential information structures, e.g. sectoring or header formats within a track
- G11B7/00736—Auxiliary data, e.g. lead-in, lead-out, Power Calibration Area [PCA], Burst Cutting Area [BCA], control information
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
- G11B7/0045—Recording
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
- G11B19/02—Control of operating function, e.g. switching from recording to reproducing
- G11B19/12—Control of operating function, e.g. switching from recording to reproducing by sensing distinguishing features of or on records, e.g. diameter end mark
- G11B19/122—Control of operating function, e.g. switching from recording to reproducing by sensing distinguishing features of or on records, e.g. diameter end mark involving the detection of an identification or authentication mark
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/12—Formatting, e.g. arrangement of data block or words on the record carriers
- G11B20/1217—Formatting, e.g. arrangement of data block or words on the record carriers on discs
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
- G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
- G11B27/102—Programmed access in sequence to addressed parts of tracks of operating record carriers
- G11B27/105—Programmed access in sequence to addressed parts of tracks of operating record carriers of operating discs
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
- G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
- G11B27/19—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier
- G11B27/28—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording
- G11B27/32—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording on separate auxiliary tracks of the same or an auxiliary record carrier
- G11B27/327—Table of contents
- G11B27/329—Table of contents on a disc [VTOC]
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B2007/0003—Recording, reproducing or erasing systems characterised by the structure or type of the carrier
- G11B2007/0006—Recording, reproducing or erasing systems characterised by the structure or type of the carrier adapted for scanning different types of carrier, e.g. CD & DVD
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/12—Formatting, e.g. arrangement of data block or words on the record carriers
- G11B2020/1264—Formatting, e.g. arrangement of data block or words on the record carriers wherein the formatting concerns a specific kind of data
- G11B2020/1265—Control data, system data or management information, i.e. data used to access or process user data
- G11B2020/1278—Physical format specifications of the record carrier, e.g. compliance with a specific standard, recording density, number of layers, start of data zone or lead-out
- G11B2020/1279—Permanent information and control data stored in the PIC zone of a Blu-Ray disc
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B2220/00—Record carriers by type
- G11B2220/20—Disc-shaped record carriers
- G11B2220/21—Disc-shaped record carriers characterised in that the disc is of read-only, rewritable, or recordable type
- G11B2220/213—Read-only discs
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B2220/00—Record carriers by type
- G11B2220/20—Disc-shaped record carriers
- G11B2220/21—Disc-shaped record carriers characterised in that the disc is of read-only, rewritable, or recordable type
- G11B2220/215—Recordable discs
- G11B2220/216—Rewritable discs
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B2220/00—Record carriers by type
- G11B2220/20—Disc-shaped record carriers
- G11B2220/21—Disc-shaped record carriers characterised in that the disc is of read-only, rewritable, or recordable type
- G11B2220/215—Recordable discs
- G11B2220/218—Write-once discs
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B2220/00—Record carriers by type
- G11B2220/20—Disc-shaped record carriers
- G11B2220/25—Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
- G11B2220/2537—Optical discs
- G11B2220/2541—Blu-ray discs; Blue laser DVR discs
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B2220/00—Record carriers by type
- G11B2220/20—Disc-shaped record carriers
- G11B2220/25—Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
- G11B2220/2537—Optical discs
- G11B2220/2562—DVDs [digital versatile discs]; Digital video discs; MMCDs; HDCDs
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B2220/00—Record carriers by type
- G11B2220/20—Disc-shaped record carriers
- G11B2220/25—Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
- G11B2220/2537—Optical discs
- G11B2220/2562—DVDs [digital versatile discs]; Digital video discs; MMCDs; HDCDs
- G11B2220/2575—DVD-RAMs
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B2220/00—Record carriers by type
- G11B2220/20—Disc-shaped record carriers
- G11B2220/25—Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
- G11B2220/2537—Optical discs
- G11B2220/2579—HD-DVDs [high definition DVDs]; AODs [advanced optical discs]
Abstract
A recording medium, such as an optical disc, method of recording disc version information thereof, recording and/or reproducing method using the disc version information thereof, and recording and/or reproducing apparatus thereof are provided.
The standardized disc information can be uniformly applied to efficiently cope with the recording and/or reproducing of the optical disc. In recording disc version information within a management area of a disc, the disc version information is separated into a first version information and a second version information and also can be recorded in at least two separate areas, respectively.
The standardized disc information can be uniformly applied to efficiently cope with the recording and/or reproducing of the optical disc. In recording disc version information within a management area of a disc, the disc version information is separated into a first version information and a second version information and also can be recorded in at least two separate areas, respectively.
Description
Information recording medium Method of configuring Version Information Thereof, Recording and Reproducing Method Using the same, And. Recording and Reproducing Apparatus Thereof 'Technical Field The present invention relates to information recording medium; such as an optical disc, a method of recording disc version information thereof, recording and/or reproducing method using the disc version .
.information recording and/or reproducing, and a recording and reproducing apparatus thereof..
Background Art .15 -Generally, information reCording medium, e.g, an optical disc On Which a large volume of data is recordable is widely used as an optical record medium. Recently, Many efforts are made to develop a new'high density.optical record Medium MD-DVD), on'which video data of highdefinition and audio data of high ouality program data of 20, large Capacity can be recorded and stored, such as a Blu-ray disc (BD) and the like.
The .B1U-ray disc that is a Sort of a next generation HDHDVD
technology is the next generation optical record solbtion enabling = to be fully equipped with data .to remarkably surPass the previous 25 = DVD, and the technology specifications of global standardizations ifor the Blu-ray disc are being established: together with other digital equipment.
.Various kinds of specifications atsociated with Blu-raj discs have been prepared. Specifically, Various specifications for a 2x-speed (or higher) rewritable Blu-ray disc (BD-RE) following the lx-speed ED-RE, a= write-once Biu-,ray dijc (BD--W0), and a read-only Blu- ray disc (BD-ROM) have been prepared.
In spite' of the same kind of B1U-ray disc, version of specified :contents -for the Blu-ray disc keeps being updated to' keep up:with the technological development. For instance, disc specifications Of 10. the lx:=speed rewritable Biu-ray disc are extending like those of the 2x7tpeed (or higher) rewritable Blu-ray disc do. Hence, the extending specified contents need to be managed as -disc version.
information.
Referring to FIG. 1, fig'.l illustrates-a.method of representing DVD
disc version information ecc6rding to a related art, 4. bits are allocated to a =management area of a 'disc to display version -infOrmatien- Whenever a new version 'is. implemented, ,additional bits are allocated to display the Vertion.
.The.dito version information .is used in determining Whether a given -20,¨ recorder/reproducer can reproduce- the data of a -.-recorded' disc.
.Bence, the disc version needs to' be recorded by a more- unified and extendible method.. In the Cate- of a BD-AB, BD-R, or BD-ROM disc of which specifications are under discussion, the.methOd of recording the, .disc : version. information . are .being discussed as well.
, Therefore, an efficient solution for recording the disc version information in a high density optical disc is urgently needed, which should be provided as standardized information to secure mutual compatibility.
Disclosure of Invention Accordingly, embodiments of the present invention are directed to an optical disc, method of recording disc version information thereof, recording and/or reproducing method using the disc version information thereof, and recording and/or reproducing apparatus thereof that substantially obviate one or more problems due to limitations and disadvantages of the related art.
An object of some embodiments of the present invention is to provide an optical disc, method of recording disc version information thereof, recording and/or reproducing method using the disc version information thereof, and recording and/or reproducing apparatus thereof, by which a new method of recording disc version information as standardized information to perform efficient recording and/or reproducing of the optical disc from the recorded disc version information.
Another object of some embodiments of the present invention is to provide an optical disc, method of recording disc version information thereof, recording and/or reproducing method using the disc version information thereof, and recording and/or reproducing apparatus thereof, by which new data structure configuring disc version information is defined.
Another object of some embodiments of the present invention is to provide an optical disc, method of recording disc version information thereof, recording and/or reproducing apparatus thereof, by which the defined disc version information is recorded in a specific disc management area by a standardized method to provide reciprocal compatibility between discs of the same kind.
A further object of some embodiments of the present invention is to provide an optical disc, method of recording disc version information thereof, recording and/or reproducing method using the disc version information thereof, and recording and/or reproducing apparatus thereof, by which real data is recorded to be played back in the optical disc using the disc version information recorded in the disc.
Additional advantages, objects, and features of embodiments of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of embodiments of the invention may be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
According to an aspect of the present invention, there is provided a method of recording version information of an optical recording medium, comprising steps of: generating version information indicating a version of the optical recording medium, the version information including a first version information and a second version information, at least one of the first version information and the second version information is to determine a backward compatibility with respect to reading or writing of the optical recording medium; and recording the version information on a specific area of the optical recording medium.
According to another aspect of the present invention, there is provided a method of recording or reproducing data on or from an optical disc, comprising a step of; identifying control information including disc size information indicating a diameter of the optical disc and disc version information indicating a version of the optical disc within the control information, the disc version information is separated into first version information and second version information at least one of the first version information and the second version information is to determine a backward compatibility with respect to reading or writing of the optical recording medium; and recording or reproducing data on or from a specific area of the optical disc based on the control information.
.information recording and/or reproducing, and a recording and reproducing apparatus thereof..
Background Art .15 -Generally, information reCording medium, e.g, an optical disc On Which a large volume of data is recordable is widely used as an optical record medium. Recently, Many efforts are made to develop a new'high density.optical record Medium MD-DVD), on'which video data of highdefinition and audio data of high ouality program data of 20, large Capacity can be recorded and stored, such as a Blu-ray disc (BD) and the like.
The .B1U-ray disc that is a Sort of a next generation HDHDVD
technology is the next generation optical record solbtion enabling = to be fully equipped with data .to remarkably surPass the previous 25 = DVD, and the technology specifications of global standardizations ifor the Blu-ray disc are being established: together with other digital equipment.
.Various kinds of specifications atsociated with Blu-raj discs have been prepared. Specifically, Various specifications for a 2x-speed (or higher) rewritable Blu-ray disc (BD-RE) following the lx-speed ED-RE, a= write-once Biu-,ray dijc (BD--W0), and a read-only Blu- ray disc (BD-ROM) have been prepared.
In spite' of the same kind of B1U-ray disc, version of specified :contents -for the Blu-ray disc keeps being updated to' keep up:with the technological development. For instance, disc specifications Of 10. the lx:=speed rewritable Biu-ray disc are extending like those of the 2x7tpeed (or higher) rewritable Blu-ray disc do. Hence, the extending specified contents need to be managed as -disc version.
information.
Referring to FIG. 1, fig'.l illustrates-a.method of representing DVD
disc version information ecc6rding to a related art, 4. bits are allocated to a =management area of a 'disc to display version -infOrmatien- Whenever a new version 'is. implemented, ,additional bits are allocated to display the Vertion.
.The.dito version information .is used in determining Whether a given -20,¨ recorder/reproducer can reproduce- the data of a -.-recorded' disc.
.Bence, the disc version needs to' be recorded by a more- unified and extendible method.. In the Cate- of a BD-AB, BD-R, or BD-ROM disc of which specifications are under discussion, the.methOd of recording the, .disc : version. information . are .being discussed as well.
, Therefore, an efficient solution for recording the disc version information in a high density optical disc is urgently needed, which should be provided as standardized information to secure mutual compatibility.
Disclosure of Invention Accordingly, embodiments of the present invention are directed to an optical disc, method of recording disc version information thereof, recording and/or reproducing method using the disc version information thereof, and recording and/or reproducing apparatus thereof that substantially obviate one or more problems due to limitations and disadvantages of the related art.
An object of some embodiments of the present invention is to provide an optical disc, method of recording disc version information thereof, recording and/or reproducing method using the disc version information thereof, and recording and/or reproducing apparatus thereof, by which a new method of recording disc version information as standardized information to perform efficient recording and/or reproducing of the optical disc from the recorded disc version information.
Another object of some embodiments of the present invention is to provide an optical disc, method of recording disc version information thereof, recording and/or reproducing method using the disc version information thereof, and recording and/or reproducing apparatus thereof, by which new data structure configuring disc version information is defined.
Another object of some embodiments of the present invention is to provide an optical disc, method of recording disc version information thereof, recording and/or reproducing apparatus thereof, by which the defined disc version information is recorded in a specific disc management area by a standardized method to provide reciprocal compatibility between discs of the same kind.
A further object of some embodiments of the present invention is to provide an optical disc, method of recording disc version information thereof, recording and/or reproducing method using the disc version information thereof, and recording and/or reproducing apparatus thereof, by which real data is recorded to be played back in the optical disc using the disc version information recorded in the disc.
Additional advantages, objects, and features of embodiments of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of embodiments of the invention may be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
According to an aspect of the present invention, there is provided a method of recording version information of an optical recording medium, comprising steps of: generating version information indicating a version of the optical recording medium, the version information including a first version information and a second version information, at least one of the first version information and the second version information is to determine a backward compatibility with respect to reading or writing of the optical recording medium; and recording the version information on a specific area of the optical recording medium.
According to another aspect of the present invention, there is provided a method of recording or reproducing data on or from an optical disc, comprising a step of; identifying control information including disc size information indicating a diameter of the optical disc and disc version information indicating a version of the optical disc within the control information, the disc version information is separated into first version information and second version information at least one of the first version information and the second version information is to determine a backward compatibility with respect to reading or writing of the optical recording medium; and recording or reproducing data on or from a specific area of the optical disc based on the control information.
5 According to another aspect of the present invention, there is provided an optical recording medium for storing data structure comprising: version information indicating a version of the optical recording medium, characterized in that, the version information comprises a first version information and a second version information, the at least one of the first and second version information is used to determine to a backward compatibility with respect to reading or writing of the optical recording medium.
According to another aspect of the present invention, there is provided a method for recording version information on an optical recording medium, comprising the steps of: generating a version information, wherein the version information indicates a version of the optical recording medium, the version information including first version information and second version information, the second version information for indicating a higher version, which is not indicated by the first version information, wherein the second version information including first digit and second digit, the first digit for indicating "X", and the second digit for indicating "Y" to represent "X" and "Y" respectively for the version "X.Y" by binary notation; and recording the version information on a specific area of the optical recording medium.
According to another aspect of the present invention, there is provided a method of recording or reproducing data on or from an optical recording medium, comprising steps of: reading control information including version information from a specific area of the optical recording medium, the version information indicating a version of the optical recording medium, the version information including a first version information and a second version information, at least one of the first version information and the second version information being used to determine a backward compatibility with respect to reading or writing of the recording medium; and 5a controlling a recording or reproducing of data on or from the optical recording medium based on the version information.
According to another aspect of the present invention, there is provided a method for recording or reproducing data on or from an optical recording medium, comprising the steps of: reading a version information from a specific area of the optical recording medium, wherein the version information indicating a version of the optical recording medium, the version information including first version information and second version information, the second version information for indicating a higher version, which is not indicated by the first version information, wherein the second version information including first digit and second digit, the first digit for indicating "X", and the second digit for indicating "Y" to represent "X" and "Y"
respectively for the version "X.Y" by binary notation; and recording or reproducing data on or from a main data area of the optical recording medium based on the read version information.
According to another aspect of the present invention, there is provided an optical recording medium having a version information, wherein the version information indicating a version of the optical recording medium, the version information including first version information and second version information, the second version information for indicating a higher version, which is not indicated by the first version information, wherein the second version information including first digit and second digit, the first digit for indicating "X", and the second digit for indicating "Y" to represent "X" and "Y" respectively for the version "X.Y" by binary notation.
According to another aspect of the present invention, there is provided an apparatus, comprising: a pickup configured to record or reproduce data on or from an optical recording medium; and a controller, operatively coupled to the pickup, configured to identify version information indicating a version of the optical recording medium, the version information including first version information and second version information, the second version information for indicating a higher version, 5b which is not indicated by the first version information, wherein the second version information includes first digit and second digit, the first digit for indicating "X" and the second digit for indicating "Y" to represent "X" and "Y" respectively for the version "X.Y" by binary notation, and the controller configured to control the pickup to record the version information on the optical recording medium.
According to another aspect of the present invention, there is provided an apparatus for recording version information on an optical recording medium, comprising: a pickup configured to record or reproduce data on or from the optical recording medium; and a controller, operatively coupled to the pickup, configured to identify version information indicating a version of the optical recording medium, the version information including a first version information and a second version information, at least one of the first version information and the second version information is to determine a compatibility of the optical recording medium, and the controller configured to control the pickup to record the version information on the optical recording medium.
According to another aspect of the present invention, there is provided an apparatus for recording/reproducing data on/from an optical recording medium, comprising: a pickup configured to record or reproduce data on or from the optical recording medium; and a controller, operatively coupled to the pickup, configured control the pickup to read version information from a specific area of the optical recording medium, the version information indicating a version of the optical recording medium, the version information including a first version information and a second version information, at least one of the first version information and the second version information being used to determine a backward compatibility with respect to reading or writing of the optical recording medium, and the controller configured to control the pickup to record or reproduce data on or from the optical recording medium based on the version information.
According to another aspect of the present invention, there is provided an apparatus for recording/reproducing data on/from an optical recording medium, 5c comprising: a pickup configured to record or reproduce data on or from the optical recording medium; and a controller, operatively coupled to the pickup, configured to identify version information indicating a version of the optical recording medium, the version information including first version information and second version information, the second version information for indicating a higher version, which is not indicated by the first version information, wherein the second version information includes first digit and second digit, the first digit for indicating "X" and the second digit for indicating "Y" to represent "X" and "Y" respectively for the version "X.Y" by binary notation, and the controller configured to control the pickup to record or reproduce the data on or from the optical recording medium based on the version information.
In accordance with the purpose of embodiments of the invention, as broadly described herein, in recording disc version information within a management area of a disc, a method of recording version information of an optical disc according to an aspect of the present invention is characterized in that the disc version information is separated into a first version information and a second version information to be recorded in at least two separate areas, respectively.
In another aspect of the present invention, in recording disc information including disc version information within a management area of a disc, a method of recording the disc information including the disc version information of an optical disc includes the step of recording disc size information indicating a size of the disc and information distinguishing a disc version within the disc information wherein the disc version information is separated into a first version information and a second version information to be recorded in at least two separate areas, respectively.
In another aspect of the present invention, in configuring disc version information, a version information data structure of an optical disc is characterized in that the disc version information comprises a first version information as a higher disc version and a second version information as a lower disc version.
5d In another aspect of the present information, in a disc having disc version information recorded therein, an optical disc is characterized in that the disc version information comprises a first version information as a higher disc version and a second Version. int-Or-motion as a ioWer disc version.
In another aspect of the present invention, a method of recording Version information of recording medium, included the steps of generating version inforMation including a first version information .5 and a second version intormation, at least one of the first version information and the second. version information is to determine a backward compatibility with respect to reading or writingof the recording .medium; and recording the version information on a specific area of the recording medium.
In another aspect of the present invention, a method of recording version information of recording medium; includes the steps of allocating information byte for 'a version information including first .information and second information within the control infOrMatibn, wherein at least one of the first and second is infOrmation determines ,a compatibility of recording medium; and Tee...circling the information byte on 'a Specific area of the information recording- medium.
In another aspect of the present. invention, a method of recording .vertion information .of recording Amedium, includes the. ateps of 20. allocating one information byte for :disc size information. indidating -a *3..iameter of the disc and disc version information indicating .a disc verpion within the control infOrmation, the: disc version information is separated into a sfirst version infOrmatiOn and a second version information; and . recording ,the -llocaed 'information byte on a specific area of the optical disc.
In another aspect of the present invention, a method of recording Version information of recording medium, includes the steps of generating .the disc version information into first version information compatible ,with previous version and reel version information; and recording the compatible version infortation and the real version inforMation in at least two separate areas, respectively.
In another aspect of the present. invention, a data structure for Version information of a recording'medium, characterized, in that the version information comprises a first version information and a second version infOrmation, the= one of first .and second Version' 'information is used to determine to a backward comoatibility with respect to reading or writing of the recording.medium.' .
:15 In another Aspect' of the present' invention, a data, structure for ,version information of a recording medium; characterized in that the version information including first version information and second version information, the second Version information for indicating a higher yersibn, which is not indicated- by the. first. verSion ZO .information, wherein the second version information .including. first -digit and second digit, the it digit for indicating- 4W, and the Second' digit for indicating ".Y" to respectively represent the version "X,Y" by binary notation, =In 'another. aspect of the present invention, a method of recording version information of recording medium, includes the steps of recording a version information on a specific area of the optical recording medium, wherein, the version information including first version information and second version information, the second version information for,indicating a higher version, 'which is not indicated by the first version information, wherein the second version information including first digit and second digit, the first digit. for indicating "X", and the second digit for indicating "Y" to.represent "X" and "Y" respectively for the version "X.Y(' by binary notation.
In another aspect of the present invention, a method of recording or reproducing data on or ,from a recording medium, includes' the steps of reading a control information including version information 'from. a specific area of :the recording medium, the .version 15.: information including a first version information and a second version information at least one of the' first version information and the second version infOrmation being used to determine a bacward. compatibility with respect to reading or :Writing of the recording medium; and controlling a.recording or reproduCing of data on..or from the recording medium based on the version information.
In: another aspect of the present invention, a method of recording or reproducing :data on or from a recording medium, includet the steps of reading a version information from a specific area of the optical recording .medium, wherein the version information . including first version information and second version information, the second version information for indicating, a higher version, which is not indicated by the first version information, wherein the. second version .information including first digit and Second digit, the first digit for indicating "X", and the second digit for indicating "Ym to represent "XP and "Ym respectively for the version "X.Y" by binary notation ; and recording or reproducing data on or from a =tliain.date area of the optical recording medium based on the read version information.
10, In another aspect of the present invention, a recording medium having a version information, wherein the version information -= including first. version information and second version information, the second version information for indicating a higher =version, 'which is not indicated by the first version information, wherein the 'second Version information =including first digit and second digit, the first digit for indicating "X", and the SecOnd digit. for indicating "Yu to represent. "X" and "Y" respeCtively for the version X.Ym_by binary notation.
,In another aspect of the present .inventiOn, a recording and/or reproducing: Method of an Optical disc includes the steps of, if the disc is loaded, reading out a first version information and a second version information recorded in at ' least two separate areas, respectively as disc version information recorded within. a .management area of the disc, . deciding whether the, loaded disc is recordable and/or Playable from. the read-out first and/or second version information., and executing. recording and/or reproducing if the loaded is recordable and/or playable.
5 In another aspect of ..he present invention, a recording and/or reproducing apparatus of an optical disc includes a recording and/or reproducing unit, if the disc is loaded,. reading out a first Version information and a second version information recorded in at least two separate areas, respectively as disc version information 10 recorded within a management area of the disc, the recording and/or reproducing unit deciding whether the loaded disc is recordable and/or playable from the= read-out first and/or second version information and a control unit receiving from the recording and/or reProduCing unit a result of deciding whether the loaded disc is 1;.5 recordable and/or playable, the control unit delivering a recording and/or reproducing command. to the recording and/or .reproducing unit if the laded disc is recordable and/or playable.
It is to be understood that both the foregoing general description and the:following detailed 'description of the present invention are exemplary and explanatory and are intended to- provide further explanation of the invention as Claimed.
Ar.e,f:DesOtiption of 1:).a.rOmqs:
The accompanying drawings, Which are included tb provide a further understanding of the invention and are incorporated in . and constitute a part of this application, illustrate em:oodiment(S) of the invention and together with the description serve to explain the principle of the invention: In the drawings:
FIG. 1 is a diagram ,of a method of displaying disc version information in DVD according to a related art;
FIG: 2 is a structural diagram of a single-layered ditc according to the present invention;
.FIG. 3 is= a structural diagram of a management area where disc version information of the present .invention is recorded;
FIG. 4 . is a diagram of a- method of recording _disc control infOrmatiOn including version information according to one embodiment of the present invention;
FIG 5 is a diagram of a method of recording..disc control information including disc version information according to another 'embodiment of the present invention;
FIG. 6 and FIG. 7 are diagram's of .a melm...)u Leuv4.L.J.Lly 1..LLtv.; L;ontrol information, including disc version information adcprding to another embodiment of the present inventiOn;
FIG. '8 and FIG. 9 are diagrams of a method of recording disc control inforMation using disc version information accOrding to another embodiment of the present invention; and 10 is 4 diagram of an optical disc recording and/or reprod.cing apparatus applicable to the present invention, Best Mode for carrying Out the Invention Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings. W,herever possible, the same reference numbers will be used throughout the drawings to refer to the same Or like Parts.
Besides, although terms used in the present invention are possibly selected from the currently well-known ones, some terms are = arbitrarily chosen by the applicant in some cases so that their meanings are explained in detail in the following description :Hence, the present invention should be understood with: the intended meanings of the corresponding terms..chosen by, the applicant instead of the simple names or meanings of the terms themselves:.
15. For convenience of explanation, a Biu-ray disc (BD) is taken as an example of an optical disc according to the present invention. Yet, it is. apparent that the concept of the present invention is characterized in an optical disc =having its disc version inforMation updated to be applicable to MD, e.g., DVD-1RAM/-R/-RW/.+V+RW. and the :like for example.
The present invention related to a method of recording disc version informatibft. Newly defined disc version. information is firstly =
¨explained and the method is then explained in detail as: follbws.
First of all, regarding 'disc version information', as mentioned in the foregoing description, a disc version is newly defined whenever new Specification item is added according to the develdpment of disc technology of the same kind, and a disc Manufacturer records in a specific area of a disc information that the corresponding disc , is prepared by whiCh version, whereby a recording/reproducing apparatus (shown in FIG. 8) for recording and/or reproducing the corresponding disc reads and identifies the disc' - version information recorded in ' the disc for recording/ reproducing.
in configuring 'disc version' information, the present :invention follows the rules in the 'following. First of all, disc version information is divided into three parts to represent and is defined as' follOws. A first version infOrmation means new specifications in the sate kind of disc format that reciprocal .comPatibilitY with a previduS version, e.g, backwards compatibility with 'respect .to reading or writing, is not secured sinCe.phySicalsneCifications of the. disc ate changed. A second' version information means addition to the corresponding specifications with the sate' number of first Version. information that the reciprocal compatibility, is maintained .20. if the first version' information is identical in spite that the physical, soecifidations of the disc are changed,. e.g.., -writing =
condition or reading condition of the disc is changed. And, a. third . version .information means the compatibility is alwayS -maintained reciprocally by adding/changing editorial of specificationS = :
only in case that the physical specifications of the disc are not changed.
And, the. first to third version information are desCribed in. the following manner for the definition thereof. For instance, if version information of, a predetermined, disc is represented by 'Va..bc', 'a' means the first version infortation, 'b' means the second version information, and sc' means the third version information. Hence, if the disc version information is 'V1.00', the 'first to third version information become '1', '0', and '0't 10' :respectively.
Assuming that a specification item of a new version is added to the disc Version 'V1.00', .the version information will .be=reoresented by 'V2Ø0.' if the added specification 'item is a .new physical SpeCification failing to maintain the compatibility with the preVidus versibt 'V1.00'. =The version information will be ..representedby W1.60' if the added specification item' is:µa. new .physical specification maintaining. the compatibility with the .fprevious version 'V1.00'. The version information will be represented by 'V1,01 if it is addition/chanoe.of -Specification-.
. . .
:editorial having no change of the'physiCal specif.ication item.
In recardinS the disc version infOrmation' in the diec,' the third version information may be Unnecessary. :The disc version information :is .recorded in. 'the disc So' that the recording and/or reproducing apparatus . (shown in FIG.. 8) efficiently -copes With the change of the physical specifications .of the disc. As the third version information corresponds to the case that the physical specifications fail' to be changed, the record layback apparatus need not look up- the third version information. Hence, in 5 representing the disc version information, the present invention mainly deals with the first and second version information. 'Yet, it is apparent that the third version. information -can be recorded in the same manner as well.
Namely, the present invention :divides the disc version 'information 10: into the first version information and the second'. version -information at least and defines areas where the first and second versiOn information are recorded, respectively'. Hence; the present invention ;enables to record the disc version information efficiently' land to actively cope with the extension of the diSc=version, 2 and Fl. 3 are a structural diagram 'of a single-layered disc : and a diagram of a method 'of reCording disc' control information including disc=version information. A playback-only optical dise.as Well as a recordable optical disc is applicable tst the pres4nt .;LnventiOn.: =
-20'...A.s- mentioned in the: foregoing description, for convenience of explanation, a Blu-raydisc (ED) :is taken as. an exatple of an :optical disc according to the preseht invention. Yet, it is apparent that the concept of the present invention is. characterized in an opUcal :disc having its disc 'version information updated to a6 be applicable to DVD-RAM/-RW./i-RW and the like for example.
Moreover, 'disc control information' including disc version information means information or area including various kinds of informatiOn for disc recording and/or reproducing. For instance, a S Blu-ray disc names it 'disc- information' or DVD-RA4/-RW/4J4 names it 'physical format information'.
First .of all, 'disc information (hereinafter abbreviated DI)' corresponding to a case of a =Blu-ray disc (BD) is explained for convenience as follows;
FIG. =2 is a structural diagram of a single-layered disc. havingone = record layer according to the present invention, in which disc information including disc version information of the present invention is recorded in a disc.
.Referring. to FIG. 2, a lead-in area i8, provided 'on at inner as' circuMference area of. an optical iac, 'whereas a.lead-out area is proVided on an outer circumferenee area of the optiCal disc.
'Specifically, a pre-recorded area and. a rewritable Or write-once area are separate from each other within the inner circumference .are a= of the disc'. The 'pre-recorded area is an area where data was 20, -already recorded in -Manufacturing the died, whereby. a User or system is unable to perform data recordingon the pre-recorded area at all.
Irt BD-/WO, the pre-recOrded area .is named PIC (permanent information .and control data) area. And, disc information as information required for disc recording' is recorded in the PIC area. In a data area, provided: are a user data area where user's real data is recorded, and spare areas:ISA and OSA to replace 6: .generated defect 'area. Specifically, TWA (temporary defect management area) for recording information of defect and general ,management is provided within ,a management are in such a write-once.optical disc as ED-WO. In case of the re-writable ED-RE, =k is. unnecessary 'to remain as a reserved area.
The.preSent invention intends to provide a method f; recording disc version information efficiently as well as a method of recording .10 speed informatiOn for recording and/or reproducino and write strategy (hereinafter abbreviated WS) as disc information in the . pre-recorded area.
It is apParent that a recording method in the pre-reootd.area is differently applied to each'kind of. standardized.disas. Yet, in Case 15, of BbRE/WO, the PIC area .as the pre-recorded. area ie recorded, by biphased high frequency Modulated signals, the 'high frequency modulated. Signals in the corresponding area are. Played' back according-to a specific. playbackjnethod,. and information is accuited from the-playback.
FIG. 3 is a-structural diagram of a PIC area in -thedisc,shown in Fig', 2. AS mentioned. 'in the foregOing deseription; it means that information can be rearranged like the structure of the PIC area in.
.Fig. 3 when the entire information within. the 'high frequency modUlated'PIC area is 'acquired.
Yet, it does not. Mean that the PIC area is not physically constructed like the. structure in FIG. 3.
In BD-RE/WO, one cluster' represents a minimum record unite 544 clusters gather to construct one fragment as one upper record unit, and total five fragments gather to form the PIG area.
Disc information is recorded in a front head cluster of a first fragment IFO. The disc information is. plurally recorded per record layer and speed permitted by the corresponding optical disc, and One diSc information includes one hundred twelve bytes. Specifically, disc information Constructed with 12 bytes is occasionally called disc information (DI) frame. MOredver, the same contents of the disc information are repeatedly recorded in each front head cluster of the rest of the fragments, -thereby enabling to cope with loss of the disc information.
15õ Informatidn 'representing the correaponding record layer and speed and: write strategy (W$) corresponding to, the record layer and .speed = are recorded within each disc information of a rettrdable OPtical c.11sc as wS11 as disc vers1on.infortilatio4.-Asince, auchinformation is . utilized :dn. recording and/or reproducing of the corresponding -:optical disc, thereby enabling efficient recording and/or reproducing.
the optical disc is such a-playback-only optical disC as BD-,.ROM, = it is' apparentthat the speed information for the disc 'record and ,write .strategy are not 'included . in tIle disc information.
A method of recording disc version information within the aboveexolained disc information is explained in detail through various embodiments by referring. to FIGs. 4 to 10 as follows.
FTG. 4 is a diagram of a method of recording disc information including disc version information according to one embodiment of the present invention, in which an area for recording disc version infdLwation is separately allocated. .
Referring to FIG. 4, at least one disc information is recorded in a disc; and an order of each disc information is decided according to its sequence number to be recorded by one byte.
For instance, the corresponding information is recorded at:a fifth byte within the disc information, is named 'DI frame sequence number in DI block!, and is briefly represented by '0011, 01h, Namely', if the information of the fifth byte is '00h1, it means first disc information. If the information, of the fifth byte is '03h,',; it means fourth disc information.
In Case of a recordable optical disc, write strategy .04S) anteroperating with the 'Speed meant by the corresponding disc -infOrmation is recorded in an:area named 'write strategy parameters' field by -(11,-111W!' bytes, and information for disc version is .:recorded in an area named 'disc version' field by 1\l byte.
The 'disci Version' field is divided into two parts, which first version information is recorded in firSt four bits and second fur bits are_ allocated as' an area for recording second version information therein. Hence the first and Second version information, each having four bits allocated thereto, enables to represent maximum fifteen versions. In other words first version and second version represent each digit' value by binary notation. A
5 value of 'F' is a hexadecimal expression meaning '15' of decimal in case of 'Vx.Fx' or 'VF.xx' shown in FIG. 4 And, 'x' is an expression meaning that the corresponding version information is a value of 'don't' care'. The same expressions will be applied to = another embodiments of the Present invention that will be explained 10 later.
If .the 'diac version! .field of Nth byte is '0100 nob', ti-i6 first version information becomes '4' and the.second Version information becomes 2. Hence, the version of the corresponding disc is =,V4.2xr, 15.= FIG. 5.jp a diagram of a method of recording disc information :including .disc version information according to 'another embodiment of the present. invention,: in which compatibility 'with a: disc intormatiOn recording method .in = the currently-disCussed lx-= rewritabl lu-ray disc (BD-RE) IS Maintained.
.20 t h .
Relerring.to FIG. 5, 11- byte of dise information is named 'disc Size/version' field where disc = size information and: version--information are recorded. Size ' information, first version infOrmation, and second version 'information are recorded in first 2-bits, second 3-bits, and third' = 3-bits, respectively.
For the disc size information, since the currently discussed B1U-ray disc (RD) has 12cm size only, '0010 means 12cm and the rest are left as a reserved area for other disc sizes that will be added to the standardization later. For example, in caseof 8cm disc, it can.be Set to '01b1. For the disc version information, 3-bits among total 6-bits are allocated to each of the first version' information and the second version' information so that each version information enables to represent maximum seven.
'If the 11th. byte is '00 001 010b', the disc size i8 12cm, the. first verSion information becomes '1' and the second versioninformation :becomes. v2'. =Hence, the version of the .corresponding: disc is 'V1.2x'.
FIG. 6 is .a diagram'. of a method of recording disC information including disc version information: according to all6th6r embodiment of the. present. invention,. in, which compatibility. :with a disc information recording method in the currently-discussed lx-'eirtable'Blu-ry disc .(11DRE) iS maintained like the embodiment of=
'FIG. 5.
Referring:
FIG, 6, 4-bits are allobated to the, seoond version information and. 2-bits 'are .allocated to the. -first version 20=,' information Unlike the embodiment of. FIG. 5. Even, if Physical SpecifiCation change .occurS, in the second=version- information, the reciprocal compatibility is maintained in Case of the. same first verSiOn. information. For ekample, if there' are 'two kinds of discs with. version 2.1 and.version.
2.2 respectively, a physical.
specification change may occur between each disc with respect to second 'version, but the reciprocal cbmoatibility is maintained because of the same first version information.In another case, if there are two kinds of discs with version 1.1 and version 2,1 respectively, a physicaLspecification change may occur between each disc with respect to first version, and the reciprocal compatibility is not maintained because of the different first version information.
The above cases are actually applied to a relation between disc and drive. For example, if a disc with a version 2.x is loaded into an old drive, which controls a disc with version lx, then the drive should not access the disc with version 2.x to read or write data on the discy-because the drive do not have any hardware and/or software to control the disc with version 2.x.
OtherWise, if a disc with a version X,3 is loaded into an old drive, = whiCh.pan control a disc with version- X..2 then the drive may access 'the disc to read or write data on the disc, because the first version information is same.
Meanwhile, :since it is- highly probable that the versiot Change may occur, more bits can be allocated to the second version 'information.
th 20.. If 11¨ byte iS '00 10- 00-11b1 the disc size is 12cM, the first VerSion information becomes' '2' and the second version _information 'becOtes '2'. Hence, the-version of the corresponding dite is. V2.3x1 FIG. 7 is a diagram Of a method of recording disc" information including disc version information according to another embodiment of the ' present invention, in which compatibility with a disc information recording method in the . currently-discussed lx-rewritable Blu-ray disc (D-RE Y is maintained like the embodiment of FIG. 5 or FIG, 6.
S. Referring to FIG. 7, unl-ike the embodiment of FIG. 5 or FIG. 6, the first version information and the disc. size information are recorded together in Ilth byte, whereas 1-byte = is 'allocated to. a separate reserved area (Nth byte). As mentioned in the fbregoing description, the embodiment in FIG. 7 considers allocation of more bits and multitude of reserved areas within the currently disc information since the version change probability of the - secOnd version information is higher than that of the first versioft'information.
'Hence, it is also possible. thatthe second version information is recorded -in the 11th byte and the first version information is IS. .recorded in the Nth byte.
= If'the ,11th byte is '00 000010b' and the Nth byte is '.0000 0100bf, the diSt:eize is 12cm, the second version infortation.becomes '4', and the first' version information becomes '2'. Hence, tihe'version 'of the correspOnding disc is 'V2..4x1.
FIG.- -ST is a diagram of a methOd of recording disc control information using disc version information according to another embodiment 'Of 'the present. invention.. Version information of the present.' invention means not.dist Specificatibn Version information but _recording' .sbeed version information.
Namely, the recording speed version information recorded within disc information intends to represent a recording speed extending from a precious recording speed in the same manner of the above-described disc version information. For instance; in case of a recordable optical disc, a write strategy (WS) to cooperate with a speed meant by the corresponding disc information ip recorded in an area named 'Write Strategy parameters'. field of Lth--111 bytes and information for a recording speed version is recorded in another specific area named 'Recording Speed Version' field of Nt'h byte.
19 The 'Recording Speed Version field is .divided into two parts-. First 4-bits are allocated to record first version information therein and :second 4-bits are allocated to record second version information therein. Hence., the first and second version information, to which .4-bits are. allocated each, enable to represent maximum 15 versions.
.Hence, if the .'Recording Speed Version' field of 1,1' byte is. '0100 .00lo,b'; the first and second. version information become and '2', respectively, Hence, it means that the recording speed version of the-.corresponding disc is 'V4..2xl.
Therefore, these values indicate an.. actual. speed by binary notation.
29 t to 111 bytes. includes write strategy parameters for each-retording "speed, which applied to a disc:
FIG. 9 is a diagram of: a method of recording disc control infOrmation using disc version -information according to another embodiment Of the'present invention, in which presence of non-presence of compatibility with a previous version is additionally represented by.the disc version information.=
Referring.to FIG. 9, two kinds of version information are recorded within disc information. First version information means real disc 5 information of a current disc and is the version information recorded in Nth byte as 'actual disc version info' field. And, a specifid recording method in such a field is the same Of that in FIG.
and its explanation is skioPed in the following.
And, second version information means coMpatible version-information compatible with a current disc and previous disc and is recOrded in 11th byte as 'compatible disc version. info' field. = In the oresent=
embodiment, 6-bits are allocated to the field tb reoresent compatible version information .by .a specific bit .value. Also, alternative.alloCtion is possible, e.g 4-bits allodatedto the 15. field as version infOrmation of fig:l.
-If.the-11 byte is ''00 000-00b' and the Nt=h byte is .'00.1.0-0010b, it =
can be known from the ilth byte. that a disc Size is 12c and .compatibie Version information is ,'Version 2' (this ,means that a=
. 'Specific version value Can be decided by a specification=but.fairs 20 to mean 'V2.k.x'). And, it can be also- known from he N byte that . real disc version information is -Therefore, from the disc version- information 'within- the disc 2inforMation, it is able to read but notonly the real Version .information of the current disc but also.the'dompatible- version information.
Thus, the disc version information is recorded in the above-described manner by a recordingireproduaing apparatus. This is mainly because a recording and/or reproducing apparatus (shown in FIG. 10) correctly reads Out the version of the loaded disc to decide whether the disc of the read-out version is recordable/playable or not. An optical disc recording and/or reproducing method using disc version information and apparatus thereof according to the Present invention are explained in detail 1..0 as follows.
. .
is a diagram of an optical' disc recording and/or reproducing apparatus ,applicable to the present .invention.
Referring to FIG. 10, a recording and/or reproducing apparatus according to the present invention includes a recording and/or 1.5 reproducing unit 10 carrying Out recording and/or reptOddoing on or from an optical disc and a control 'unit 20 controlling the recording and/or reproducing unit 10. The Control unit -20 gives a recording and/or reproducing command for a. Specific area; and the recording and/or- reproducing unit. 10 caries out the recarding and/or reproducing for the specific area according to.the2coltimand Of the control unit 20.
Specifically, the recording and/or reproducing unit .10 includes an interface unit 12 performing bommunications with an external device, hoSt, a pickup Unit 11:' directly recording data on the optical -disc or playing back the data, a data processor 13 receiving a. playback signal from the pickup unit 11 to. restore into a necessary signal value or Modulating to 'deliver a signal to be recorded into a signal to be recorded on the Optical disc/ a servo :Unit 14 reading out a ,signal from the optical disc cdrrectly or Controlling the pickup unit 11 to record a signal. an the optical disc correctly, a memory 15 temporarily storing disc 'control :information including disc version information, .and a microbomputer .16 respOnsible for controlling the above-described elements within the recording and/or reproducing unit 10.
Apart from the recording and/or reproducing apparatus: a display device. 30 displaying a 'signal played back via the =recording and/or reproducing unit 10 or:providing a final' user of information via the control unit.20 may be provided.
Induatrial Applicability 'A recording and/or reproducinc-prOcess.of an optical disc according to the.present invention is. explained in detail a&f011ows.
First of .all, once an optical di8c is loaded in. the optiCal recording and/or reproducing apparatus the disc control information recorded iµri.the disc is read out to be temporarilT'stored in the memory 15.of the recording and/or-reproducing unit 10, And, Various -kinds' of the'dis& control information are utilized for the recording .and/or. reproducing of the obtical disc Specifically, the control information stored in the memory 15 includes disc information containing the disc -version information of the present invention Hence, the first 'and second version information recorded Within the disc information are read out.
If the disc version supported by the recording and/or reproducing apparatus is *V1.xxi, the microcotputer 16 within the recording and/or 'reproducing unit 10 decides that the corresponding disc is recordable and/or playable if the first version infortation within the disc version information read out from 'the loaded, disc is '1' and then notifies the corresponding decision to the control unit 20.
The =control unit 20 theh delivers a'normal recording and/or reproducing command to'the recording and/or reproducing unit 10. Yet, :the microcomputer 16 decides that the corresponding disc is not recording and/or playable if the first version information within the disc veraion- information read out from the loaded disc is equal to Or greater than '2' and then notifies the corresponding decision to :the control unit 20 The control unit 20 then notifies an announcement message informing that the recording and/or, reproducing is impossible via the display device 30 to -a User, ifinetessary.
,In SO doing; the second version informatiOn is baPically'recordable and/or playable even if it is different. Yet, a recording and/or- =
renrodiaCing apparatus having higher second version information may fail:to support a certain function, suCh as the. reading or writing data frot or on the optical dist'. In such a =ease, it is .also possible to notify an .
announcement message that a certain function is not supportable to the user via the control unit.
For instance, if the disc version supported by the recording and/or reproducing apparatus is W1,1x; and the disc version information . 5 read Out from the loaded disc is '.V1_3x', the recording and/or reproducing is possible because the first version information is identical. Vet, since the second version information of the loaded disc is .U1 and corresponds to a previous version, compared to of. the second version information the recording and/or reproducing =apparatus supports, a certain function of the retording and/or reproducing apparatus may be unusable, -TherefOre; the microcomputer 16 within the recording- and/or .reproduding apparatus cotbares the first and second version -information recorded in the loaded disc to its version information .1.5 to decide recording and/or reproducing possibility or sUpportability of the certain function, and then delivers the corresponding decision to the control unit Or user, thereby enabling the efficient recording- and/or reproducingof .the optical disc, 'Accordingly, the present invention provides various methods of recording:disc version information in a high density. optical disc-:Using disc information including the disd Version. information, and moreparticularly, Using at least twokinds of verSion information, thereby enabling = to uniformly apply the standardized disc information, to efficiently. cope : with the recording and/or reproducing =of the optical disc.
It will be apparent to those skilled in the' art that various modifications. and variation's can, be made in the .oresent invention.
Thus, it is intended that the. present invention covers the 5 modifications and variaions of this invention provided they come within the scope of the appendedclaims- and their equivalents:
According to another aspect of the present invention, there is provided a method for recording version information on an optical recording medium, comprising the steps of: generating a version information, wherein the version information indicates a version of the optical recording medium, the version information including first version information and second version information, the second version information for indicating a higher version, which is not indicated by the first version information, wherein the second version information including first digit and second digit, the first digit for indicating "X", and the second digit for indicating "Y" to represent "X" and "Y" respectively for the version "X.Y" by binary notation; and recording the version information on a specific area of the optical recording medium.
According to another aspect of the present invention, there is provided a method of recording or reproducing data on or from an optical recording medium, comprising steps of: reading control information including version information from a specific area of the optical recording medium, the version information indicating a version of the optical recording medium, the version information including a first version information and a second version information, at least one of the first version information and the second version information being used to determine a backward compatibility with respect to reading or writing of the recording medium; and 5a controlling a recording or reproducing of data on or from the optical recording medium based on the version information.
According to another aspect of the present invention, there is provided a method for recording or reproducing data on or from an optical recording medium, comprising the steps of: reading a version information from a specific area of the optical recording medium, wherein the version information indicating a version of the optical recording medium, the version information including first version information and second version information, the second version information for indicating a higher version, which is not indicated by the first version information, wherein the second version information including first digit and second digit, the first digit for indicating "X", and the second digit for indicating "Y" to represent "X" and "Y"
respectively for the version "X.Y" by binary notation; and recording or reproducing data on or from a main data area of the optical recording medium based on the read version information.
According to another aspect of the present invention, there is provided an optical recording medium having a version information, wherein the version information indicating a version of the optical recording medium, the version information including first version information and second version information, the second version information for indicating a higher version, which is not indicated by the first version information, wherein the second version information including first digit and second digit, the first digit for indicating "X", and the second digit for indicating "Y" to represent "X" and "Y" respectively for the version "X.Y" by binary notation.
According to another aspect of the present invention, there is provided an apparatus, comprising: a pickup configured to record or reproduce data on or from an optical recording medium; and a controller, operatively coupled to the pickup, configured to identify version information indicating a version of the optical recording medium, the version information including first version information and second version information, the second version information for indicating a higher version, 5b which is not indicated by the first version information, wherein the second version information includes first digit and second digit, the first digit for indicating "X" and the second digit for indicating "Y" to represent "X" and "Y" respectively for the version "X.Y" by binary notation, and the controller configured to control the pickup to record the version information on the optical recording medium.
According to another aspect of the present invention, there is provided an apparatus for recording version information on an optical recording medium, comprising: a pickup configured to record or reproduce data on or from the optical recording medium; and a controller, operatively coupled to the pickup, configured to identify version information indicating a version of the optical recording medium, the version information including a first version information and a second version information, at least one of the first version information and the second version information is to determine a compatibility of the optical recording medium, and the controller configured to control the pickup to record the version information on the optical recording medium.
According to another aspect of the present invention, there is provided an apparatus for recording/reproducing data on/from an optical recording medium, comprising: a pickup configured to record or reproduce data on or from the optical recording medium; and a controller, operatively coupled to the pickup, configured control the pickup to read version information from a specific area of the optical recording medium, the version information indicating a version of the optical recording medium, the version information including a first version information and a second version information, at least one of the first version information and the second version information being used to determine a backward compatibility with respect to reading or writing of the optical recording medium, and the controller configured to control the pickup to record or reproduce data on or from the optical recording medium based on the version information.
According to another aspect of the present invention, there is provided an apparatus for recording/reproducing data on/from an optical recording medium, 5c comprising: a pickup configured to record or reproduce data on or from the optical recording medium; and a controller, operatively coupled to the pickup, configured to identify version information indicating a version of the optical recording medium, the version information including first version information and second version information, the second version information for indicating a higher version, which is not indicated by the first version information, wherein the second version information includes first digit and second digit, the first digit for indicating "X" and the second digit for indicating "Y" to represent "X" and "Y" respectively for the version "X.Y" by binary notation, and the controller configured to control the pickup to record or reproduce the data on or from the optical recording medium based on the version information.
In accordance with the purpose of embodiments of the invention, as broadly described herein, in recording disc version information within a management area of a disc, a method of recording version information of an optical disc according to an aspect of the present invention is characterized in that the disc version information is separated into a first version information and a second version information to be recorded in at least two separate areas, respectively.
In another aspect of the present invention, in recording disc information including disc version information within a management area of a disc, a method of recording the disc information including the disc version information of an optical disc includes the step of recording disc size information indicating a size of the disc and information distinguishing a disc version within the disc information wherein the disc version information is separated into a first version information and a second version information to be recorded in at least two separate areas, respectively.
In another aspect of the present invention, in configuring disc version information, a version information data structure of an optical disc is characterized in that the disc version information comprises a first version information as a higher disc version and a second version information as a lower disc version.
5d In another aspect of the present information, in a disc having disc version information recorded therein, an optical disc is characterized in that the disc version information comprises a first version information as a higher disc version and a second Version. int-Or-motion as a ioWer disc version.
In another aspect of the present invention, a method of recording Version information of recording medium, included the steps of generating version inforMation including a first version information .5 and a second version intormation, at least one of the first version information and the second. version information is to determine a backward compatibility with respect to reading or writingof the recording .medium; and recording the version information on a specific area of the recording medium.
In another aspect of the present invention, a method of recording version information of recording medium; includes the steps of allocating information byte for 'a version information including first .information and second information within the control infOrMatibn, wherein at least one of the first and second is infOrmation determines ,a compatibility of recording medium; and Tee...circling the information byte on 'a Specific area of the information recording- medium.
In another aspect of the present. invention, a method of recording .vertion information .of recording Amedium, includes the. ateps of 20. allocating one information byte for :disc size information. indidating -a *3..iameter of the disc and disc version information indicating .a disc verpion within the control infOrmation, the: disc version information is separated into a sfirst version infOrmatiOn and a second version information; and . recording ,the -llocaed 'information byte on a specific area of the optical disc.
In another aspect of the present invention, a method of recording Version information of recording medium, includes the steps of generating .the disc version information into first version information compatible ,with previous version and reel version information; and recording the compatible version infortation and the real version inforMation in at least two separate areas, respectively.
In another aspect of the present. invention, a data structure for Version information of a recording'medium, characterized, in that the version information comprises a first version information and a second version infOrmation, the= one of first .and second Version' 'information is used to determine to a backward comoatibility with respect to reading or writing of the recording.medium.' .
:15 In another Aspect' of the present' invention, a data, structure for ,version information of a recording medium; characterized in that the version information including first version information and second version information, the second Version information for indicating a higher yersibn, which is not indicated- by the. first. verSion ZO .information, wherein the second version information .including. first -digit and second digit, the it digit for indicating- 4W, and the Second' digit for indicating ".Y" to respectively represent the version "X,Y" by binary notation, =In 'another. aspect of the present invention, a method of recording version information of recording medium, includes the steps of recording a version information on a specific area of the optical recording medium, wherein, the version information including first version information and second version information, the second version information for,indicating a higher version, 'which is not indicated by the first version information, wherein the second version information including first digit and second digit, the first digit. for indicating "X", and the second digit for indicating "Y" to.represent "X" and "Y" respectively for the version "X.Y(' by binary notation.
In another aspect of the present invention, a method of recording or reproducing data on or ,from a recording medium, includes' the steps of reading a control information including version information 'from. a specific area of :the recording medium, the .version 15.: information including a first version information and a second version information at least one of the' first version information and the second version infOrmation being used to determine a bacward. compatibility with respect to reading or :Writing of the recording medium; and controlling a.recording or reproduCing of data on..or from the recording medium based on the version information.
In: another aspect of the present invention, a method of recording or reproducing :data on or from a recording medium, includet the steps of reading a version information from a specific area of the optical recording .medium, wherein the version information . including first version information and second version information, the second version information for indicating, a higher version, which is not indicated by the first version information, wherein the. second version .information including first digit and Second digit, the first digit for indicating "X", and the second digit for indicating "Ym to represent "XP and "Ym respectively for the version "X.Y" by binary notation ; and recording or reproducing data on or from a =tliain.date area of the optical recording medium based on the read version information.
10, In another aspect of the present invention, a recording medium having a version information, wherein the version information -= including first. version information and second version information, the second version information for indicating a higher =version, 'which is not indicated by the first version information, wherein the 'second Version information =including first digit and second digit, the first digit for indicating "X", and the SecOnd digit. for indicating "Yu to represent. "X" and "Y" respeCtively for the version X.Ym_by binary notation.
,In another aspect of the present .inventiOn, a recording and/or reproducing: Method of an Optical disc includes the steps of, if the disc is loaded, reading out a first version information and a second version information recorded in at ' least two separate areas, respectively as disc version information recorded within. a .management area of the disc, . deciding whether the, loaded disc is recordable and/or Playable from. the read-out first and/or second version information., and executing. recording and/or reproducing if the loaded is recordable and/or playable.
5 In another aspect of ..he present invention, a recording and/or reproducing apparatus of an optical disc includes a recording and/or reproducing unit, if the disc is loaded,. reading out a first Version information and a second version information recorded in at least two separate areas, respectively as disc version information 10 recorded within a management area of the disc, the recording and/or reproducing unit deciding whether the loaded disc is recordable and/or playable from the= read-out first and/or second version information and a control unit receiving from the recording and/or reProduCing unit a result of deciding whether the loaded disc is 1;.5 recordable and/or playable, the control unit delivering a recording and/or reproducing command. to the recording and/or .reproducing unit if the laded disc is recordable and/or playable.
It is to be understood that both the foregoing general description and the:following detailed 'description of the present invention are exemplary and explanatory and are intended to- provide further explanation of the invention as Claimed.
Ar.e,f:DesOtiption of 1:).a.rOmqs:
The accompanying drawings, Which are included tb provide a further understanding of the invention and are incorporated in . and constitute a part of this application, illustrate em:oodiment(S) of the invention and together with the description serve to explain the principle of the invention: In the drawings:
FIG. 1 is a diagram ,of a method of displaying disc version information in DVD according to a related art;
FIG: 2 is a structural diagram of a single-layered ditc according to the present invention;
.FIG. 3 is= a structural diagram of a management area where disc version information of the present .invention is recorded;
FIG. 4 . is a diagram of a- method of recording _disc control infOrmatiOn including version information according to one embodiment of the present invention;
FIG 5 is a diagram of a method of recording..disc control information including disc version information according to another 'embodiment of the present invention;
FIG. 6 and FIG. 7 are diagram's of .a melm...)u Leuv4.L.J.Lly 1..LLtv.; L;ontrol information, including disc version information adcprding to another embodiment of the present inventiOn;
FIG. '8 and FIG. 9 are diagrams of a method of recording disc control inforMation using disc version information accOrding to another embodiment of the present invention; and 10 is 4 diagram of an optical disc recording and/or reprod.cing apparatus applicable to the present invention, Best Mode for carrying Out the Invention Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings. W,herever possible, the same reference numbers will be used throughout the drawings to refer to the same Or like Parts.
Besides, although terms used in the present invention are possibly selected from the currently well-known ones, some terms are = arbitrarily chosen by the applicant in some cases so that their meanings are explained in detail in the following description :Hence, the present invention should be understood with: the intended meanings of the corresponding terms..chosen by, the applicant instead of the simple names or meanings of the terms themselves:.
15. For convenience of explanation, a Biu-ray disc (BD) is taken as an example of an optical disc according to the present invention. Yet, it is. apparent that the concept of the present invention is characterized in an optical disc =having its disc version inforMation updated to be applicable to MD, e.g., DVD-1RAM/-R/-RW/.+V+RW. and the :like for example.
The present invention related to a method of recording disc version informatibft. Newly defined disc version. information is firstly =
¨explained and the method is then explained in detail as: follbws.
First of all, regarding 'disc version information', as mentioned in the foregoing description, a disc version is newly defined whenever new Specification item is added according to the develdpment of disc technology of the same kind, and a disc Manufacturer records in a specific area of a disc information that the corresponding disc , is prepared by whiCh version, whereby a recording/reproducing apparatus (shown in FIG. 8) for recording and/or reproducing the corresponding disc reads and identifies the disc' - version information recorded in ' the disc for recording/ reproducing.
in configuring 'disc version' information, the present :invention follows the rules in the 'following. First of all, disc version information is divided into three parts to represent and is defined as' follOws. A first version infOrmation means new specifications in the sate kind of disc format that reciprocal .comPatibilitY with a previduS version, e.g, backwards compatibility with 'respect .to reading or writing, is not secured sinCe.phySicalsneCifications of the. disc ate changed. A second' version information means addition to the corresponding specifications with the sate' number of first Version. information that the reciprocal compatibility, is maintained .20. if the first version' information is identical in spite that the physical, soecifidations of the disc are changed,. e.g.., -writing =
condition or reading condition of the disc is changed. And, a. third . version .information means the compatibility is alwayS -maintained reciprocally by adding/changing editorial of specificationS = :
only in case that the physical specifications of the disc are not changed.
And, the. first to third version information are desCribed in. the following manner for the definition thereof. For instance, if version information of, a predetermined, disc is represented by 'Va..bc', 'a' means the first version infortation, 'b' means the second version information, and sc' means the third version information. Hence, if the disc version information is 'V1.00', the 'first to third version information become '1', '0', and '0't 10' :respectively.
Assuming that a specification item of a new version is added to the disc Version 'V1.00', .the version information will .be=reoresented by 'V2Ø0.' if the added specification 'item is a .new physical SpeCification failing to maintain the compatibility with the preVidus versibt 'V1.00'. =The version information will be ..representedby W1.60' if the added specification item' is:µa. new .physical specification maintaining. the compatibility with the .fprevious version 'V1.00'. The version information will be represented by 'V1,01 if it is addition/chanoe.of -Specification-.
. . .
:editorial having no change of the'physiCal specif.ication item.
In recardinS the disc version infOrmation' in the diec,' the third version information may be Unnecessary. :The disc version information :is .recorded in. 'the disc So' that the recording and/or reproducing apparatus . (shown in FIG.. 8) efficiently -copes With the change of the physical specifications .of the disc. As the third version information corresponds to the case that the physical specifications fail' to be changed, the record layback apparatus need not look up- the third version information. Hence, in 5 representing the disc version information, the present invention mainly deals with the first and second version information. 'Yet, it is apparent that the third version. information -can be recorded in the same manner as well.
Namely, the present invention :divides the disc version 'information 10: into the first version information and the second'. version -information at least and defines areas where the first and second versiOn information are recorded, respectively'. Hence; the present invention ;enables to record the disc version information efficiently' land to actively cope with the extension of the diSc=version, 2 and Fl. 3 are a structural diagram 'of a single-layered disc : and a diagram of a method 'of reCording disc' control information including disc=version information. A playback-only optical dise.as Well as a recordable optical disc is applicable tst the pres4nt .;LnventiOn.: =
-20'...A.s- mentioned in the: foregoing description, for convenience of explanation, a Blu-raydisc (ED) :is taken as. an exatple of an :optical disc according to the preseht invention. Yet, it is apparent that the concept of the present invention is. characterized in an opUcal :disc having its disc 'version information updated to a6 be applicable to DVD-RAM/-RW./i-RW and the like for example.
Moreover, 'disc control information' including disc version information means information or area including various kinds of informatiOn for disc recording and/or reproducing. For instance, a S Blu-ray disc names it 'disc- information' or DVD-RA4/-RW/4J4 names it 'physical format information'.
First .of all, 'disc information (hereinafter abbreviated DI)' corresponding to a case of a =Blu-ray disc (BD) is explained for convenience as follows;
FIG. =2 is a structural diagram of a single-layered disc. havingone = record layer according to the present invention, in which disc information including disc version information of the present invention is recorded in a disc.
.Referring. to FIG. 2, a lead-in area i8, provided 'on at inner as' circuMference area of. an optical iac, 'whereas a.lead-out area is proVided on an outer circumferenee area of the optiCal disc.
'Specifically, a pre-recorded area and. a rewritable Or write-once area are separate from each other within the inner circumference .are a= of the disc'. The 'pre-recorded area is an area where data was 20, -already recorded in -Manufacturing the died, whereby. a User or system is unable to perform data recordingon the pre-recorded area at all.
Irt BD-/WO, the pre-recOrded area .is named PIC (permanent information .and control data) area. And, disc information as information required for disc recording' is recorded in the PIC area. In a data area, provided: are a user data area where user's real data is recorded, and spare areas:ISA and OSA to replace 6: .generated defect 'area. Specifically, TWA (temporary defect management area) for recording information of defect and general ,management is provided within ,a management are in such a write-once.optical disc as ED-WO. In case of the re-writable ED-RE, =k is. unnecessary 'to remain as a reserved area.
The.preSent invention intends to provide a method f; recording disc version information efficiently as well as a method of recording .10 speed informatiOn for recording and/or reproducino and write strategy (hereinafter abbreviated WS) as disc information in the . pre-recorded area.
It is apParent that a recording method in the pre-reootd.area is differently applied to each'kind of. standardized.disas. Yet, in Case 15, of BbRE/WO, the PIC area .as the pre-recorded. area ie recorded, by biphased high frequency Modulated signals, the 'high frequency modulated. Signals in the corresponding area are. Played' back according-to a specific. playbackjnethod,. and information is accuited from the-playback.
FIG. 3 is a-structural diagram of a PIC area in -thedisc,shown in Fig', 2. AS mentioned. 'in the foregOing deseription; it means that information can be rearranged like the structure of the PIC area in.
.Fig. 3 when the entire information within. the 'high frequency modUlated'PIC area is 'acquired.
Yet, it does not. Mean that the PIC area is not physically constructed like the. structure in FIG. 3.
In BD-RE/WO, one cluster' represents a minimum record unite 544 clusters gather to construct one fragment as one upper record unit, and total five fragments gather to form the PIG area.
Disc information is recorded in a front head cluster of a first fragment IFO. The disc information is. plurally recorded per record layer and speed permitted by the corresponding optical disc, and One diSc information includes one hundred twelve bytes. Specifically, disc information Constructed with 12 bytes is occasionally called disc information (DI) frame. MOredver, the same contents of the disc information are repeatedly recorded in each front head cluster of the rest of the fragments, -thereby enabling to cope with loss of the disc information.
15õ Informatidn 'representing the correaponding record layer and speed and: write strategy (W$) corresponding to, the record layer and .speed = are recorded within each disc information of a rettrdable OPtical c.11sc as wS11 as disc vers1on.infortilatio4.-Asince, auchinformation is . utilized :dn. recording and/or reproducing of the corresponding -:optical disc, thereby enabling efficient recording and/or reproducing.
the optical disc is such a-playback-only optical disC as BD-,.ROM, = it is' apparentthat the speed information for the disc 'record and ,write .strategy are not 'included . in tIle disc information.
A method of recording disc version information within the aboveexolained disc information is explained in detail through various embodiments by referring. to FIGs. 4 to 10 as follows.
FTG. 4 is a diagram of a method of recording disc information including disc version information according to one embodiment of the present invention, in which an area for recording disc version infdLwation is separately allocated. .
Referring to FIG. 4, at least one disc information is recorded in a disc; and an order of each disc information is decided according to its sequence number to be recorded by one byte.
For instance, the corresponding information is recorded at:a fifth byte within the disc information, is named 'DI frame sequence number in DI block!, and is briefly represented by '0011, 01h, Namely', if the information of the fifth byte is '00h1, it means first disc information. If the information, of the fifth byte is '03h,',; it means fourth disc information.
In Case of a recordable optical disc, write strategy .04S) anteroperating with the 'Speed meant by the corresponding disc -infOrmation is recorded in an:area named 'write strategy parameters' field by -(11,-111W!' bytes, and information for disc version is .:recorded in an area named 'disc version' field by 1\l byte.
The 'disci Version' field is divided into two parts, which first version information is recorded in firSt four bits and second fur bits are_ allocated as' an area for recording second version information therein. Hence the first and Second version information, each having four bits allocated thereto, enables to represent maximum fifteen versions. In other words first version and second version represent each digit' value by binary notation. A
5 value of 'F' is a hexadecimal expression meaning '15' of decimal in case of 'Vx.Fx' or 'VF.xx' shown in FIG. 4 And, 'x' is an expression meaning that the corresponding version information is a value of 'don't' care'. The same expressions will be applied to = another embodiments of the Present invention that will be explained 10 later.
If .the 'diac version! .field of Nth byte is '0100 nob', ti-i6 first version information becomes '4' and the.second Version information becomes 2. Hence, the version of the corresponding disc is =,V4.2xr, 15.= FIG. 5.jp a diagram of a method of recording disc information :including .disc version information according to 'another embodiment of the present. invention,: in which compatibility 'with a: disc intormatiOn recording method .in = the currently-disCussed lx-= rewritabl lu-ray disc (BD-RE) IS Maintained.
.20 t h .
Relerring.to FIG. 5, 11- byte of dise information is named 'disc Size/version' field where disc = size information and: version--information are recorded. Size ' information, first version infOrmation, and second version 'information are recorded in first 2-bits, second 3-bits, and third' = 3-bits, respectively.
For the disc size information, since the currently discussed B1U-ray disc (RD) has 12cm size only, '0010 means 12cm and the rest are left as a reserved area for other disc sizes that will be added to the standardization later. For example, in caseof 8cm disc, it can.be Set to '01b1. For the disc version information, 3-bits among total 6-bits are allocated to each of the first version' information and the second version' information so that each version information enables to represent maximum seven.
'If the 11th. byte is '00 001 010b', the disc size i8 12cm, the. first verSion information becomes '1' and the second versioninformation :becomes. v2'. =Hence, the version of the .corresponding: disc is 'V1.2x'.
FIG. 6 is .a diagram'. of a method of recording disC information including disc version information: according to all6th6r embodiment of the. present. invention,. in, which compatibility. :with a disc information recording method in the currently-discussed lx-'eirtable'Blu-ry disc .(11DRE) iS maintained like the embodiment of=
'FIG. 5.
Referring:
FIG, 6, 4-bits are allobated to the, seoond version information and. 2-bits 'are .allocated to the. -first version 20=,' information Unlike the embodiment of. FIG. 5. Even, if Physical SpecifiCation change .occurS, in the second=version- information, the reciprocal compatibility is maintained in Case of the. same first verSiOn. information. For ekample, if there' are 'two kinds of discs with. version 2.1 and.version.
2.2 respectively, a physical.
specification change may occur between each disc with respect to second 'version, but the reciprocal cbmoatibility is maintained because of the same first version information.In another case, if there are two kinds of discs with version 1.1 and version 2,1 respectively, a physicaLspecification change may occur between each disc with respect to first version, and the reciprocal compatibility is not maintained because of the different first version information.
The above cases are actually applied to a relation between disc and drive. For example, if a disc with a version 2.x is loaded into an old drive, which controls a disc with version lx, then the drive should not access the disc with version 2.x to read or write data on the discy-because the drive do not have any hardware and/or software to control the disc with version 2.x.
OtherWise, if a disc with a version X,3 is loaded into an old drive, = whiCh.pan control a disc with version- X..2 then the drive may access 'the disc to read or write data on the disc, because the first version information is same.
Meanwhile, :since it is- highly probable that the versiot Change may occur, more bits can be allocated to the second version 'information.
th 20.. If 11¨ byte iS '00 10- 00-11b1 the disc size is 12cM, the first VerSion information becomes' '2' and the second version _information 'becOtes '2'. Hence, the-version of the corresponding dite is. V2.3x1 FIG. 7 is a diagram Of a method of recording disc" information including disc version information according to another embodiment of the ' present invention, in which compatibility with a disc information recording method in the . currently-discussed lx-rewritable Blu-ray disc (D-RE Y is maintained like the embodiment of FIG. 5 or FIG, 6.
S. Referring to FIG. 7, unl-ike the embodiment of FIG. 5 or FIG. 6, the first version information and the disc. size information are recorded together in Ilth byte, whereas 1-byte = is 'allocated to. a separate reserved area (Nth byte). As mentioned in the fbregoing description, the embodiment in FIG. 7 considers allocation of more bits and multitude of reserved areas within the currently disc information since the version change probability of the - secOnd version information is higher than that of the first versioft'information.
'Hence, it is also possible. thatthe second version information is recorded -in the 11th byte and the first version information is IS. .recorded in the Nth byte.
= If'the ,11th byte is '00 000010b' and the Nth byte is '.0000 0100bf, the diSt:eize is 12cm, the second version infortation.becomes '4', and the first' version information becomes '2'. Hence, tihe'version 'of the correspOnding disc is 'V2..4x1.
FIG.- -ST is a diagram of a methOd of recording disc control information using disc version information according to another embodiment 'Of 'the present. invention.. Version information of the present.' invention means not.dist Specificatibn Version information but _recording' .sbeed version information.
Namely, the recording speed version information recorded within disc information intends to represent a recording speed extending from a precious recording speed in the same manner of the above-described disc version information. For instance; in case of a recordable optical disc, a write strategy (WS) to cooperate with a speed meant by the corresponding disc information ip recorded in an area named 'Write Strategy parameters'. field of Lth--111 bytes and information for a recording speed version is recorded in another specific area named 'Recording Speed Version' field of Nt'h byte.
19 The 'Recording Speed Version field is .divided into two parts-. First 4-bits are allocated to record first version information therein and :second 4-bits are allocated to record second version information therein. Hence., the first and second version information, to which .4-bits are. allocated each, enable to represent maximum 15 versions.
.Hence, if the .'Recording Speed Version' field of 1,1' byte is. '0100 .00lo,b'; the first and second. version information become and '2', respectively, Hence, it means that the recording speed version of the-.corresponding disc is 'V4..2xl.
Therefore, these values indicate an.. actual. speed by binary notation.
29 t to 111 bytes. includes write strategy parameters for each-retording "speed, which applied to a disc:
FIG. 9 is a diagram of: a method of recording disc control infOrmation using disc version -information according to another embodiment Of the'present invention, in which presence of non-presence of compatibility with a previous version is additionally represented by.the disc version information.=
Referring.to FIG. 9, two kinds of version information are recorded within disc information. First version information means real disc 5 information of a current disc and is the version information recorded in Nth byte as 'actual disc version info' field. And, a specifid recording method in such a field is the same Of that in FIG.
and its explanation is skioPed in the following.
And, second version information means coMpatible version-information compatible with a current disc and previous disc and is recOrded in 11th byte as 'compatible disc version. info' field. = In the oresent=
embodiment, 6-bits are allocated to the field tb reoresent compatible version information .by .a specific bit .value. Also, alternative.alloCtion is possible, e.g 4-bits allodatedto the 15. field as version infOrmation of fig:l.
-If.the-11 byte is ''00 000-00b' and the Nt=h byte is .'00.1.0-0010b, it =
can be known from the ilth byte. that a disc Size is 12c and .compatibie Version information is ,'Version 2' (this ,means that a=
. 'Specific version value Can be decided by a specification=but.fairs 20 to mean 'V2.k.x'). And, it can be also- known from he N byte that . real disc version information is -Therefore, from the disc version- information 'within- the disc 2inforMation, it is able to read but notonly the real Version .information of the current disc but also.the'dompatible- version information.
Thus, the disc version information is recorded in the above-described manner by a recordingireproduaing apparatus. This is mainly because a recording and/or reproducing apparatus (shown in FIG. 10) correctly reads Out the version of the loaded disc to decide whether the disc of the read-out version is recordable/playable or not. An optical disc recording and/or reproducing method using disc version information and apparatus thereof according to the Present invention are explained in detail 1..0 as follows.
. .
is a diagram of an optical' disc recording and/or reproducing apparatus ,applicable to the present .invention.
Referring to FIG. 10, a recording and/or reproducing apparatus according to the present invention includes a recording and/or 1.5 reproducing unit 10 carrying Out recording and/or reptOddoing on or from an optical disc and a control 'unit 20 controlling the recording and/or reproducing unit 10. The Control unit -20 gives a recording and/or reproducing command for a. Specific area; and the recording and/or- reproducing unit. 10 caries out the recarding and/or reproducing for the specific area according to.the2coltimand Of the control unit 20.
Specifically, the recording and/or reproducing unit .10 includes an interface unit 12 performing bommunications with an external device, hoSt, a pickup Unit 11:' directly recording data on the optical -disc or playing back the data, a data processor 13 receiving a. playback signal from the pickup unit 11 to. restore into a necessary signal value or Modulating to 'deliver a signal to be recorded into a signal to be recorded on the Optical disc/ a servo :Unit 14 reading out a ,signal from the optical disc cdrrectly or Controlling the pickup unit 11 to record a signal. an the optical disc correctly, a memory 15 temporarily storing disc 'control :information including disc version information, .and a microbomputer .16 respOnsible for controlling the above-described elements within the recording and/or reproducing unit 10.
Apart from the recording and/or reproducing apparatus: a display device. 30 displaying a 'signal played back via the =recording and/or reproducing unit 10 or:providing a final' user of information via the control unit.20 may be provided.
Induatrial Applicability 'A recording and/or reproducinc-prOcess.of an optical disc according to the.present invention is. explained in detail a&f011ows.
First of .all, once an optical di8c is loaded in. the optiCal recording and/or reproducing apparatus the disc control information recorded iµri.the disc is read out to be temporarilT'stored in the memory 15.of the recording and/or-reproducing unit 10, And, Various -kinds' of the'dis& control information are utilized for the recording .and/or. reproducing of the obtical disc Specifically, the control information stored in the memory 15 includes disc information containing the disc -version information of the present invention Hence, the first 'and second version information recorded Within the disc information are read out.
If the disc version supported by the recording and/or reproducing apparatus is *V1.xxi, the microcotputer 16 within the recording and/or 'reproducing unit 10 decides that the corresponding disc is recordable and/or playable if the first version infortation within the disc version information read out from 'the loaded, disc is '1' and then notifies the corresponding decision to the control unit 20.
The =control unit 20 theh delivers a'normal recording and/or reproducing command to'the recording and/or reproducing unit 10. Yet, :the microcomputer 16 decides that the corresponding disc is not recording and/or playable if the first version information within the disc veraion- information read out from the loaded disc is equal to Or greater than '2' and then notifies the corresponding decision to :the control unit 20 The control unit 20 then notifies an announcement message informing that the recording and/or, reproducing is impossible via the display device 30 to -a User, ifinetessary.
,In SO doing; the second version informatiOn is baPically'recordable and/or playable even if it is different. Yet, a recording and/or- =
renrodiaCing apparatus having higher second version information may fail:to support a certain function, suCh as the. reading or writing data frot or on the optical dist'. In such a =ease, it is .also possible to notify an .
announcement message that a certain function is not supportable to the user via the control unit.
For instance, if the disc version supported by the recording and/or reproducing apparatus is W1,1x; and the disc version information . 5 read Out from the loaded disc is '.V1_3x', the recording and/or reproducing is possible because the first version information is identical. Vet, since the second version information of the loaded disc is .U1 and corresponds to a previous version, compared to of. the second version information the recording and/or reproducing =apparatus supports, a certain function of the retording and/or reproducing apparatus may be unusable, -TherefOre; the microcomputer 16 within the recording- and/or .reproduding apparatus cotbares the first and second version -information recorded in the loaded disc to its version information .1.5 to decide recording and/or reproducing possibility or sUpportability of the certain function, and then delivers the corresponding decision to the control unit Or user, thereby enabling the efficient recording- and/or reproducingof .the optical disc, 'Accordingly, the present invention provides various methods of recording:disc version information in a high density. optical disc-:Using disc information including the disd Version. information, and moreparticularly, Using at least twokinds of verSion information, thereby enabling = to uniformly apply the standardized disc information, to efficiently. cope : with the recording and/or reproducing =of the optical disc.
It will be apparent to those skilled in the' art that various modifications. and variation's can, be made in the .oresent invention.
Thus, it is intended that the. present invention covers the 5 modifications and variaions of this invention provided they come within the scope of the appendedclaims- and their equivalents:
Claims (39)
1. A method of recording version information of an optical recording medium, comprising steps of:
generating version information indicating a version of the optical recording medium, the version information including a first version information and a second version information, at least one of the first version information and the second version information is to determine a backward compatibility with respect to reading or writing of the optical recording medium; and recording the version information on a specific area of the optical recording medium.
generating version information indicating a version of the optical recording medium, the version information including a first version information and a second version information, at least one of the first version information and the second version information is to determine a backward compatibility with respect to reading or writing of the optical recording medium; and recording the version information on a specific area of the optical recording medium.
2. The method as claimed in claim 1, wherein at least one of the first and second version information is to determine compatibility for writing or reading between the optical recording medium and drive.
3. The method as claimed in claim 1, wherein the first version information is to determine compatibility between same kinds of optical recording medium.
4. The method as claimed in claim 1, wherein the first and second version information are recorded in a management area within the optical recording medium.
5. The method as claimed in claim 1, wherein the first version information represents a compatible version, and the second version information represents an actual version.
6. The method as claimed in claim 5, wherein the second version information comprises a first version part and a second version part, and wherein the first version part represents a digit X and the second version part represents a digit Y for respectively representing version "X.Y"
by binary notation, and wherein the number of bits for the second version information being larger than the number of bits for the first version information, and wherein the second version information for indicating a higher version, which is not indicated by the first version information.
by binary notation, and wherein the number of bits for the second version information being larger than the number of bits for the first version information, and wherein the second version information for indicating a higher version, which is not indicated by the first version information.
7. The method as claimed in claim 6, wherein the first and second version parts are allocated by 4-bits respectively within one information byte, and wherein the first version information is allocated by 4-bits or 6-bits within one information byte.
8. The method as claimed in claim 1, wherein the generating step further generates a size information to indicate a diameter of the recording medium, and the size information is recorded on the specific area of the recording medium with the version information, wherein the version information and the size information are allocated by one information byte, and wherein the size information is allocated by 2-bits, the first version information is allocated by 2-bits, and the second information is allocated by 4-bits within the information byte.
9. A method of recording or reproducing data on or from an optical disc, comprising a step of;
identifying control information including disc size information indicating a diameter of the optical disc and disc version information indicating a version of the optical disc within the control information, the disc version information is separated into first version information and second version information at least one of the first version information and the second version information is to determine a backward compatibility with respect to reading or writing of the optical recording medium; and recording or reproducing data on or from a specific area of the optical disc based on the control information.
identifying control information including disc size information indicating a diameter of the optical disc and disc version information indicating a version of the optical disc within the control information, the disc version information is separated into first version information and second version information at least one of the first version information and the second version information is to determine a backward compatibility with respect to reading or writing of the optical recording medium; and recording or reproducing data on or from a specific area of the optical disc based on the control information.
10. The method of claim 9, wherein the disc size information and the disc version information are recorded together in one information byte within the control information, and wherein 2-bits are allocated to the disc size information, 2-bits are allocated to the first version information, and 4-bits are allocated to the second version information.
11. An optical recording medium for storing data structure comprising:
version information indicating a version of the optical recording medium, characterized in that, the version information comprises a first version information and a second version information, the at least one of the first and second version information is used to determine to a backward compatibility with respect to reading or writing of the optical recording medium.
version information indicating a version of the optical recording medium, characterized in that, the version information comprises a first version information and a second version information, the at least one of the first and second version information is used to determine to a backward compatibility with respect to reading or writing of the optical recording medium.
12. The optical recording medium of claim 11, wherein at least one of the first and second version information is used to determine compatibility for writing or reading between the optical recording medium and drive.
13. The optical recording medium of claim 11, wherein the first and second version information are recorded in a management area within the optical recording medium.
14. The optical recording medium of claim 11, wherein the first version information represents a compatible version, and the second version information represents an actual version.
15. The optical recording medium of claim 14, wherein the second version information comprises a first version part and a second version part, and wherein the first version part represents a digit X and the second version part represents a digit Y for respectively representing version "X.Y"
by binary notation, and wherein the number of bits for the second version information being larger than the number of bits for the first version information, and wherein the second version information for indicating a higher version, which is not indicated by the first version information.
by binary notation, and wherein the number of bits for the second version information being larger than the number of bits for the first version information, and wherein the second version information for indicating a higher version, which is not indicated by the first version information.
16. The optical recording medium of claim 15 wherein the first and second version parts are allocated by 4-bits respectively within one information byte, and wherein the first version information is allocated by 4-bits or 6-bits within one information byte.
17. The optical recording medium of claim 11, wherein the optical recording medium further comprises a size information to indicate a diameter of the optical recording medium, and wherein the version information and the size information are allocated by one information byte, and wherein the size information is allocated by 2-bits, the first version information is allocated by 2-bits, and the second information is allocated by 4-bits within the information byte.
18. A method for recording version information on an optical recording medium, comprising the steps of:
generating a version information, wherein the version information indicates a version of the optical recording medium, the version information including first version information and second version information, the second version information for indicating a higher version, which is not indicated by the first version information, wherein the second version information including first digit and second digit, the first digit for indicating "X", and the second digit for indicating "Y" to represent "X" and "Y" respectively for the version "X.Y" by binary notation;
and recording the version information on a specific area of the optical recording medium.
generating a version information, wherein the version information indicates a version of the optical recording medium, the version information including first version information and second version information, the second version information for indicating a higher version, which is not indicated by the first version information, wherein the second version information including first digit and second digit, the first digit for indicating "X", and the second digit for indicating "Y" to represent "X" and "Y" respectively for the version "X.Y" by binary notation;
and recording the version information on a specific area of the optical recording medium.
19. A method of recording or reproducing data on or from an optical recording medium, comprising steps of:
reading control information including version information from a specific area of the optical recording medium, the version information indicating a version of the optical recording medium, the version information including a first version information and a second version information, at least one of the first version information and the second version information being used to determine a backward compatibility with respect to reading or writing of the recording medium; and controlling a recording or reproducing of data on or from the optical recording medium based on the version information.
reading control information including version information from a specific area of the optical recording medium, the version information indicating a version of the optical recording medium, the version information including a first version information and a second version information, at least one of the first version information and the second version information being used to determine a backward compatibility with respect to reading or writing of the recording medium; and controlling a recording or reproducing of data on or from the optical recording medium based on the version information.
20. The method as claimed in claim 19, wherein the controlling the data recording/reproducing comprises:
determining a compatibility between the optical recording medium and a drive for recording/reproducing the data, based on at least one of the first and second version information; and recording/reproducing the data on/from the optical recording medium according to the determined compatibility.
determining a compatibility between the optical recording medium and a drive for recording/reproducing the data, based on at least one of the first and second version information; and recording/reproducing the data on/from the optical recording medium according to the determined compatibility.
21. The method as claimed in claim 19, wherein the specific area is a management area of the optical recording medium.
22. The method as claimed in claim 19, wherein the first version information represents a compatible version, and the second version information represents an actual version.
23. The method as claimed in claim 22, wherein the second version information comprises a first version part and a second version part, wherein the first version part represents a digit X and the second version part represents a digit Y for respectively representing version "X.Y"
by binary notation, and wherein the number of bits for the second version information being larger than the number of bits for the first version information.
by binary notation, and wherein the number of bits for the second version information being larger than the number of bits for the first version information.
24. The method as claimed in claim 23, wherein the first and second version parts are allocated by 4-bits respectively within one information byte, and wherein the first version information is allocated by 4-bits or 6-bits within one information byte.
25. The method as claimed in claim 19, wherein the reading step further reads a size information to indicate a diameter of the optical recording medium, the size information recorded on the specific area of the optical recording medium with the version information, thereby determining the size of the optical recording medium, wherein the version information and the size information are allocated by one information byte within the control information, wherein the size information is allocated by 2-bits, the first version information is allocated by 2-bits, and the second information is allocated by 4-bits within the information byte.
26. A method for recording or reproducing data on or from an optical recording medium, comprising the steps of:
reading a version information from a specific area of the optical recording medium, wherein the version information indicating a version of the optical recording medium, the version information including first version information and second version information, the second version information for indicating a higher version, which is not indicated by the first version information, wherein the second version information including first digit and second digit, the first digit for indicating "X", and the second digit for indicating "Y" to represent "X" and "Y" respectively for the version "X.Y" by binary notation;
and recording or reproducing data on or from a main data area of the optical recording medium based on the read version information.
reading a version information from a specific area of the optical recording medium, wherein the version information indicating a version of the optical recording medium, the version information including first version information and second version information, the second version information for indicating a higher version, which is not indicated by the first version information, wherein the second version information including first digit and second digit, the first digit for indicating "X", and the second digit for indicating "Y" to represent "X" and "Y" respectively for the version "X.Y" by binary notation;
and recording or reproducing data on or from a main data area of the optical recording medium based on the read version information.
27. An optical recording medium having a version information, wherein the version information indicating a version of the optical recording medium, the version information including first version information and second version information, the second version information for indicating a higher version, which is not indicated by the first version information, wherein the second version information including first digit and second digit, the first digit for indicating "X", and the second digit for indicating "Y" to represent "X" and "Y" respectively for the version "X.Y" by binary notation.
28. An apparatus, comprising:
a pickup configured to record or reproduce data on or from an optical recording medium; and a controller, operatively coupled to the pickup, configured to identify version information indicating a version of the optical recording medium, the version information including first version information and second version information, the second version information for indicating a higher version, which is not indicated by the first version information, wherein the second version information includes first digit and second digit, the first digit for indicating "X" and the second digit for indicating "Y" to represent "X" and "Y" respectively for the version "X.Y" by binary notation, and the controller configured to control the pickup to record the version information on the optical recording medium.
a pickup configured to record or reproduce data on or from an optical recording medium; and a controller, operatively coupled to the pickup, configured to identify version information indicating a version of the optical recording medium, the version information including first version information and second version information, the second version information for indicating a higher version, which is not indicated by the first version information, wherein the second version information includes first digit and second digit, the first digit for indicating "X" and the second digit for indicating "Y" to represent "X" and "Y" respectively for the version "X.Y" by binary notation, and the controller configured to control the pickup to record the version information on the optical recording medium.
29. An apparatus for recording version information on an optical recording medium, comprising:
a pickup configured to record or reproduce data on or from the optical recording medium; and a controller, operatively coupled to the pickup, configured to identify version information indicating a version of the optical recording medium, the version information including a first version information and a second version information, at least one of the first version information and the second version information is to determine a compatibility of the optical recording medium, and the controller configured to control the pickup to record the version information on the optical recording medium.
a pickup configured to record or reproduce data on or from the optical recording medium; and a controller, operatively coupled to the pickup, configured to identify version information indicating a version of the optical recording medium, the version information including a first version information and a second version information, at least one of the first version information and the second version information is to determine a compatibility of the optical recording medium, and the controller configured to control the pickup to record the version information on the optical recording medium.
30. The apparatus as claimed in claim 29, wherein the controller is configured to determine compatibility for writing or reading between the optical recording medium and drive based on at least one of the first and second version information.
31. The apparatus of claim 29, wherein the first version information represents a compatible version, and the second version information represents an actual version.
32. The apparatus as claimed in claim 31, wherein the second version information comprises a first version part and a second version part, and wherein the first version part represents a digit X and the second version part represents a digit Y for respectively representing version "X.Y"
by binary notation, and wherein the number of bits for the second version information being larger than the number of bits for the first version information, and wherein the second version information for indicating a higher version, which is not indicated by the first version information.
by binary notation, and wherein the number of bits for the second version information being larger than the number of bits for the first version information, and wherein the second version information for indicating a higher version, which is not indicated by the first version information.
33. The apparatus of claim 29, wherein the controller is configured to identify size information to indicate a diameter of the optical recording medium, and configured to control the pickup to record the size information on the optical recording medium, wherein the version information and the size information are allocated by one information byte, and wherein the size information is allocated by 2-bits, the first version information is allocated by 2-bits, and the second information is allocated by 4-bits within the information byte.
34. An apparatus for recording/reproducing data on/from an optical recording medium, comprising:
a pickup configured to record or reproduce data on or from the optical recording medium; and a controller, operatively coupled to the pickup, configured control the pickup to read version information from a specific area of the optical recording medium, the version information indicating a version of the optical recording medium, the version information including a first version information and a second version information, at least one of the first version information and the second version information being used to determine a backward compatibility with respect to reading or writing of the optical recording medium, and the controller configured to control the pickup to record or reproduce data on or from the optical recording medium based on the version information.
a pickup configured to record or reproduce data on or from the optical recording medium; and a controller, operatively coupled to the pickup, configured control the pickup to read version information from a specific area of the optical recording medium, the version information indicating a version of the optical recording medium, the version information including a first version information and a second version information, at least one of the first version information and the second version information being used to determine a backward compatibility with respect to reading or writing of the optical recording medium, and the controller configured to control the pickup to record or reproduce data on or from the optical recording medium based on the version information.
35. The apparatus as claimed in claim 34, wherein the controller is configured to determine compatibility for writing or reading between the optical recording medium and drive based on at least one of the first and second version information.
36. The apparatus of claim 34, wherein the first version information represents a compatible version, and the second version information represents an actual version.
37. The apparatus as claimed in claim 36, wherein the second version information comprises a first version part and a second version part, and wherein the first version part represents a digit X and the second version part represents a digit Y for respectively representing version "X.Y"
by binary notation, and wherein the number of bits for the second version information being larger than the number of bits for the first version information, and wherein the second version information for indicating a higher version, which is not indicated by the first version information.
by binary notation, and wherein the number of bits for the second version information being larger than the number of bits for the first version information, and wherein the second version information for indicating a higher version, which is not indicated by the first version information.
38. The apparatus of claim 36, wherein the controller is configured to control the pickup to read size information to indicate a diameter of the optical recording medium, wherein the version information and the size information are allocated by one information byte, wherein the size information is allocated by 2-bits, the first version information is allocated by 2-bits, and the second information is allocated by 4-bits within the information byte.
39. An apparatus for recording/reproducing data on/from an optical recording medium, comprising:
a pickup configured to record or reproduce data on or from the optical recording medium; and a controller, operatively coupled to the pickup, configured to identify version information indicating a version of the optical recording medium, the version information including first version information and second version information, the second version information for indicating a higher version, which is not indicated by the first version information, wherein the second version information includes first digit and second digit, the first digit for indicating "X" and the second digit for indicating "Y" to represent "X" and "Y" respectively for the version "X.Y" by binary notation, and the controller configured to control the pickup to record or reproduce the data on or from the optical recording medium based on the version information.
a pickup configured to record or reproduce data on or from the optical recording medium; and a controller, operatively coupled to the pickup, configured to identify version information indicating a version of the optical recording medium, the version information including first version information and second version information, the second version information for indicating a higher version, which is not indicated by the first version information, wherein the second version information includes first digit and second digit, the first digit for indicating "X" and the second digit for indicating "Y" to represent "X" and "Y" respectively for the version "X.Y" by binary notation, and the controller configured to control the pickup to record or reproduce the data on or from the optical recording medium based on the version information.
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