WO2005017885A1 - 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 PDF

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Publication number
WO2005017885A1
WO2005017885A1 PCT/KR2004/001551 KR2004001551W WO2005017885A1 WO 2005017885 A1 WO2005017885 A1 WO 2005017885A1 KR 2004001551 W KR2004001551 W KR 2004001551W WO 2005017885 A1 WO2005017885 A1 WO 2005017885A1
Authority
WO
WIPO (PCT)
Prior art keywords
information
version
version information
recording medium
disc
Prior art date
Application number
PCT/KR2004/001551
Other languages
French (fr)
Inventor
Sang Woon Suh
Original Assignee
Lg Electronics Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Lg Electronics Inc. filed Critical Lg Electronics Inc.
Priority to JP2006523119A priority Critical patent/JP4880460B2/en
Priority to MXPA04007508A priority patent/MXPA04007508A/en
Priority to CA2474892A priority patent/CA2474892C/en
Priority to BR0402879-1A priority patent/BRPI0402879A/en
Priority to CN2004800008544A priority patent/CN1768377B/en
Priority to EP04737219.8A priority patent/EP1654729B1/en
Publication of WO2005017885A1 publication Critical patent/WO2005017885A1/en

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Classifications

    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00Recording 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
    • G11B7/007Arrangement 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
    • G11B7/00736Auxiliary data, e.g. lead-in, lead-out, Power Calibration Area [PCA], Burst Cutting Area [BCA], control information
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00Recording 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
    • G11B7/004Recording, reproducing or erasing methods; Read, write or erase circuits therefor
    • G11B7/0045Recording
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B19/00Driving, 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
    • G11B19/02Control of operating function, e.g. switching from recording to reproducing
    • G11B19/12Control of operating function, e.g. switching from recording to reproducing by sensing distinguishing features of or on records, e.g. diameter end mark
    • G11B19/122Control 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
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10Digital recording or reproducing
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10Digital recording or reproducing
    • G11B20/12Formatting, e.g. arrangement of data block or words on the record carriers
    • G11B20/1217Formatting, e.g. arrangement of data block or words on the record carriers on discs
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/10Indexing; Addressing; Timing or synchronising; Measuring tape travel
    • G11B27/102Programmed access in sequence to addressed parts of tracks of operating record carriers
    • G11B27/105Programmed access in sequence to addressed parts of tracks of operating record carriers of operating discs
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/10Indexing; Addressing; Timing or synchronising; Measuring tape travel
    • G11B27/19Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier
    • G11B27/28Indexing; 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
    • G11B27/32Indexing; 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
    • G11B27/327Table of contents
    • G11B27/329Table of contents on a disc [VTOC]
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00Recording 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
    • G11B2007/0003Recording, reproducing or erasing systems characterised by the structure or type of the carrier
    • G11B2007/0006Recording, reproducing or erasing systems characterised by the structure or type of the carrier adapted for scanning different types of carrier, e.g. CD & DVD
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10Digital recording or reproducing
    • G11B20/12Formatting, e.g. arrangement of data block or words on the record carriers
    • G11B2020/1264Formatting, e.g. arrangement of data block or words on the record carriers wherein the formatting concerns a specific kind of data
    • G11B2020/1265Control data, system data or management information, i.e. data used to access or process user data
    • G11B2020/1278Physical 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
    • G11B2020/1279Permanent information and control data stored in the PIC zone of a Blu-Ray disc
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00Record carriers by type
    • G11B2220/20Disc-shaped record carriers
    • G11B2220/21Disc-shaped record carriers characterised in that the disc is of read-only, rewritable, or recordable type
    • G11B2220/213Read-only discs
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00Record carriers by type
    • G11B2220/20Disc-shaped record carriers
    • G11B2220/21Disc-shaped record carriers characterised in that the disc is of read-only, rewritable, or recordable type
    • G11B2220/215Recordable discs
    • G11B2220/216Rewritable discs
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00Record carriers by type
    • G11B2220/20Disc-shaped record carriers
    • G11B2220/21Disc-shaped record carriers characterised in that the disc is of read-only, rewritable, or recordable type
    • G11B2220/215Recordable discs
    • G11B2220/218Write-once discs
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00Record carriers by type
    • G11B2220/20Disc-shaped record carriers
    • G11B2220/25Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
    • G11B2220/2537Optical discs
    • G11B2220/2541Blu-ray discs; Blue laser DVR discs
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00Record carriers by type
    • G11B2220/20Disc-shaped record carriers
    • G11B2220/25Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
    • G11B2220/2537Optical discs
    • G11B2220/2562DVDs [digital versatile discs]; Digital video discs; MMCDs; HDCDs
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00Record carriers by type
    • G11B2220/20Disc-shaped record carriers
    • G11B2220/25Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
    • G11B2220/2537Optical discs
    • G11B2220/2562DVDs [digital versatile discs]; Digital video discs; MMCDs; HDCDs
    • G11B2220/2575DVD-RAMs
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00Record carriers by type
    • G11B2220/20Disc-shaped record carriers
    • G11B2220/25Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
    • G11B2220/2537Optical discs
    • G11B2220/2579HD-DVDs [high definition DVDs]; AODs [advanced optical discs]

Definitions

  • the present invention relates to information recording medium, such as
  • information recording medium e.g., an optical disc on
  • Hb-DVD new high density optical record medium
  • BD Blu-ray disc
  • the Blu-ray disc that is a sort of a next generation HD-DVD
  • BD-RE rewritable Blu-ray disc
  • BD— O write-once Blu-ray disc
  • BD-RO read-only Blu-ray disc
  • fig.l illustrates a method of representing DVD disc version information according to a related art
  • 4 bits are allocated to a management area of a ' disc to display version information.
  • additional bits are allocated to display the version.
  • the disc version information is used in determining whether a given recorder/reproducer can reproduce the data of a recorded disc.
  • the disc version needs to be recorded by a more unified and extendible method.
  • 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.
  • the present invention is 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 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 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 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 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 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.
  • the disc version information of an optical disc includes the step of
  • version information a version information data structure ' of an
  • a method of recording version information of recording medium includes the steps of generating 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 recording medium; and recording the version information on a specific area of the recording medium.
  • 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 information, wherein at least one of the first and second
  • information determines a compatibility of recording medium; and recording the information byte on a specific area of the information recording medium.
  • a method of recording version information of recording medium includes the steps of allocating one information byte for disc size information indicating a diameter of the disc and disc version information indicating a disc version within the control information, the disc version information is separated into a first version information and a second version information; and recording the allocated information byte on a specific area of the optical disc.
  • a method of recording version information of recording medium includes the steps of generating the disc version information into first version information compatible r with previous version and real version information; and recording the compatible version information and the real version information in at least two separate areas, respectively.
  • 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 compatibility with respect to reading or writing of the recording medium.
  • 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 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
  • 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 Vj - 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 U Y" to represent "X” and "Y” respectively for the version "X.Y” by binary notation.
  • 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 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 recording medium based on the version information.
  • reproducing data on or from a recording medium includes 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 "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.
  • 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 "Y” to represent "X” and "Y” respectively for the version "X.Y” by binary notation.
  • 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
  • reproducing apparatus of an optical disc includes a recording and/or
  • reproducing unit a result of deciding whether the loaded disc is
  • control unit • delivering a recording
  • the loaded disc is recordable and/or playable.
  • FIG. 1 is a diagram r 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 disc 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 disc version information according to one embodiment of the present invention.
  • FIG. 5 is a diagram of a method of recording disc control
  • FIG. 6 and FIG. 7 are diagrams of a method of recording disc control information including disc version information according 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.
  • FIG. 10 is a diagram of an optical disc recording and/or reproducing apparatus applicable to the present invention. Best Mode for carrying Out the Invention
  • the present invention related to a method of recording disc version information.
  • Newly defined disc version information is firstly explained and the method is then explained in detail as follows.
  • a disc version is newly defined whenever new specification item is added according to the development 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 .
  • the present invention follows the rules in the following.
  • disc version information is divided into three parts to represent and is defined as follows.
  • a first version information means new specifications in the same kind of disc format that reciprocal compatibility with a previous version, e.g., backwards compatibility with respect to reading or writing, is not secured since -physical specifications of the disc are changed.
  • a second version information means addition to the corresponding specifications with the same number of first version information that the reciprocal compatibility is maintained if the first version information is identical in spite that the physical specifications of the disc are changed, e.g., writing condition or reading condition of the disc is changed.
  • a third version information means new specifications in the same kind of disc format that reciprocal compatibility with a previous version, e.g., backwards compatibility with respect to reading or writing, is not secured since -physical specifications of the disc are changed.
  • a second version information means addition to the corresponding specifications with the same number of first version information that the reciprocal compatibility is maintained if the first version information is identical in spite that the physical specifications of the disc are changed, e.g
  • 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
  • 'Va.bc' 'a' means the first version information
  • 'b' means the
  • first to third version information become '1', ' 0', and '0'
  • the disc version information may be unnecessary.
  • the disc version information may be unnecessary.
  • 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 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 and to actively cope with the extension of the disc version. FIG. 2 and FI .
  • FIGS. 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 disc as well as a recordable optical disc is applicable to the present invention.
  • BD Blu-ray disc
  • BD Blu-ray disc
  • 'disc control information' including disc version information means information or area including various kinds of information for disc recording and/or reproducing.
  • a Blu-ray disc names it 'disc information' or DVD-RAM/-RW/+W names it 'physical format information' .
  • DI 'disc information
  • BD Blu-ray disc
  • FIG. 2 is a structural diagram of a single-layered disc having one record layer according to the present invention, in which disc information including disc version information of the present invention is recorded in a disc.
  • a lead-in area is provided on an inner circumference area of an optical disc
  • a lead-out area is provided on an outer circumference area of the optical disc.
  • a pre-recorded area and a rewritable or write once area are separate from each other within the inner circumference area of the disc.
  • the pre-recorded area is an area where data was already recorded in manufacturing the disc, whereby a user or system is unable to perform data recording on the pre-recorded area at all.
  • the pre-recorded area is named PIC (permanent information and control data) area.
  • disc information as information required for disc recording is recorded in the PIC area.
  • TDMA temporary defect management area
  • TDMA temporary defect management area
  • BD-WO write-once optical disc
  • TDMA is unnecessary to remain as a reserved area.
  • the present invention intends to provide a method of recording disc version information efficiently as well as a method of recording speed information for recording and/or reproducing and write strategy (hereinafter abbreviated WS) as disc information in the pre-recorded area.
  • WS recording speed information for recording and/or reproducing and write strategy
  • FIG. 3 is a structural diagram of a PIC area in the disc shown in FIG. 2. As mentioned in the foregoing description, 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.
  • 'one cluster' represents a minimum record unit, 544
  • clusters gather to construct one fragment as one upper record unit
  • Disc information is recorded in a front head cluster of a first
  • the disc information is plurally recorded per record
  • disc information includes one hundred twelve bytes. Specifically,
  • optical disc thereby enabling efficient recording and/or reproducing.
  • optical disc is such a playback-only optical disc as BD-ROM
  • FIGs . 4 to 10 various embodiments by referring to FIGs . 4 to 10 as follows.
  • FIG. 4 is a diagram of a method of recording disc information
  • At least one disc information is recorded in a
  • the corresponding information is recorded at a fifth
  • DI block' in DI block', and is briefly represented by '00h, Olh, 02h,...'.
  • the 'disc version' field is divided into two parts, in which first
  • version information is recorded in first four bits and second four
  • bits are allocated as an area for recording second version information therein.
  • FIG. 5 is a diagram of a method of recording disc information
  • BD-RE rewritable Blu-ray disc
  • Size information first version
  • Blu-ray disc has 12cm size only, '00b' means 12cm and the rest
  • the disc size is 12cm
  • FIG. 6 is a diagram of a method of recording disc information
  • BD-RE rewritable Blu-ray disc
  • FIG. 5 is a diagrammatic representation of FIG. 5.
  • the drive may access
  • FIG. 7 is a diagram of a method of recording disc information
  • disc version 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 (BD-RE) is maintained like the embodiment of FIG. 5 or FIG. 6.
  • BD-RE currently-discussed lx-rewritable Blu-ray disc
  • 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 11 th byte, whereas 1-byte is allocated to a separate
  • 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 version information. Hence, it is also possible that the second version information is recorded in the 11 th byte and the first version information is recorded in the N th byte.
  • FIG. 8 is a diagram of a method of recording disc control information using disc version information according to another
  • Version information of the present invention means not disc specification version information but recording speed version information. Namely, the recording speed version information recorded
  • the 'Recording Speed Version' field is divided into two parts.
  • the first and second version information become '4' and '2'
  • L to 111 bytes includes write strategy parameters for each recording
  • FIG. 9 is a diagram of a method of recording disc control
  • First version information means real disc information of a current disc and is the version information recorded in N th byte as 'actual disc version info' field. And, a specific recording method in such a field is the same of that in FIG. 4 and its explanation is skipped in the following.
  • second version information means compatible version information compatible with a current disc and previous disc and is recorded in 11 th byte as 'compatible disc version info' field.
  • 6-bits are allocated to the field to represent compatible version information by a specific bit value.
  • alternative allocation is possible, e.g, 4-bits allocated to the field as version information of fig.l.
  • the 11 th byte is '00 000010b' and the N h byte is '0010 0010b'
  • a disc size is 12cm and compatible version information is 'Version 2' (this means that a specific version value can be decided by a specification but fails to mean 'V2.xx').
  • a specific version value can be decided by a specification but fails to mean 'V2.xx'.
  • real disc version information is 'V2.2x'.
  • the disc version information within the disc information it is able to read out not only the real version information of the current disc but also the compatible version information.
  • FIG. 10 correctly reads out the version of the loaded disc to
  • FIG. 10 is a diagram of an optical disc recording and/or reproducing
  • a recording and/or reproducing apparatus Referring to FIG. 10, a recording and/or reproducing apparatus
  • reproducing unit 10 carrying out recording and/or reproducing on or
  • control unit 20 gives a recording
  • reproducing unit 10 caries out the recording and/or
  • the recording and/or reproducing unit 10 includes an
  • interface unit 12 performing communications with an external device
  • a pickup unit 11 directly recording data on the optical disc or playing back the data
  • a memory 15 temporarily storing disc control
  • the recording and/or reproducing unit 10 the recording and/or reproducing unit 10.
  • reproducing unit 10 or providing a final user of information via the
  • control unit 20 may be provided.
  • control information stored in the memory 15 includes disc
  • the control unit 20 then delivers a normal recording and/or
  • the microcomputer 16 decides that the corresponding disc is not
  • control unit 20 then notifies an
  • the second version information is basically recordable
  • the recording and/or reproducing apparatus 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 'Vl.lx' and the disc version information read out from the loaded disc is 'VI.3x', the recording and/or reproducing is possible because the first version information is identical. Yet, since the second version information of the loaded disc is '1' and corresponds to a previous version, compared to '3' of the second version information the recording and/or reproducing apparatus supports, a certain function of the recording and/or reproducing apparatus may be unusable .
  • the microcomputer 16 within the recording and/or reproducing apparatus compares the first and second version information recorded in the loaded disc to its version information 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
  • the present invention provides various methods of recording disc version information in a high density optical disc using disc information including the disc version information, and more particularly, using at least two kinds of version information,

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.

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
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 (Hb-DVD) , on which video data
of high definition and audio data of high quality, program data of
large capacity can be recorded and stored, such as a Blu-ray disc (BD) and the like.
The Blu-ray disc that is a sort of a next generation HD-DVD
technology is the next generation optical record solution enabling
to be fully equipped with data to remarkably surpass the previous
DVD, and the technology specifications of global standardizations
for the Blu-ray disc are being established together with other digital equipment.
Various kinds of specifications associated with Blu-ray discs have been prepared. Specifically, various specifications for a 2x-speed
(or higher) rewritable Blu-ray disc (BD-RE) following the lx-speed BD-RE, a write-once Blu-ray disc (BD— O) , and a read-only Blu-ray disc (BD-RO ) have been prepared.
In spite of the same kind of Blu-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 the lx-speed rewritable Blu-ray disc are extending like those of the 2x-speed (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 according to a related art, 4 bits are allocated to a management area of a ' disc to display version information. Whenever a new version is implemented, additional bits are allocated to display the version. The disc version information is used in determining whether a given recorder/reproducer can reproduce the data of a recorded disc. Hence, the disc version needs to be recorded by a more unified and extendible method. In the case of a BD-RE, 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, the present invention is 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 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 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 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 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 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 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 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 .
To achieve these objects and other advantages and in accordance with the purpose of the invention, as embodied and 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 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.
In another aspect of the present invention, 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 information as a lower disc version.
In another aspect of the present invention, a method of recording version information of recording medium, includes the steps of generating 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 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 information, wherein at least one of the first and second
information determines a compatibility of recording medium; and recording the information byte on a specific area of the information recording medium.
In another aspect of the present invention, a method of recording version information of recording medium, includes the steps of allocating one information byte for disc size information indicating a diameter of the disc and disc version information indicating a disc version within the control information, the disc version information is separated into a first version information and a second version information; and recording the allocated 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 rwith previous version and real version information; and recording the compatible version information 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 compatibility with respect to reading or writing of the recording medium. 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 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 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 forVj- 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 UY" 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 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 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, includes 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 "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. 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 "Y" to represent "X" and "Y" respectively for the version "X.Y" 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 .
In another aspect of the 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
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
recordable and/or playable, the control unit • delivering a recording
and/or reproducing command to the recording and/or reproducing unit
if the loaded 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.
Brief Description of Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment (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 rof a method of displaying disc version information in DVD according to a related art;
FIG. 2 is a structural diagram of a single-layered disc 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 disc 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 diagrams of a method of recording disc control information including disc version information according 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
FIG. 10 is a diagram of an optical disc recording and/or reproducing 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. Wherever possible, the same reference numbers will be used throughout the drawings to refer to the same or like part's .
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. For convenience of explanation, a Blu-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 DVD, e.g., DVD-RAM/-R/-RW/+R/+RW and the like for example.
The present invention related to a method of recording disc version information. Newly defined disc version information is firstly explained and the method is then explained in detail as follows. 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 development 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 same kind of disc format that reciprocal compatibility with a previous version, e.g., backwards compatibility with respect to reading or writing, is not secured since -physical specifications of the disc are changed. A second version information means addition to the corresponding specifications with the same number of first version information that the reciprocal compatibility is maintained if the first version information is identical in spite that the physical specifications 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 information, 'b' means the
second version information, and 'c' means the third version
information. Hence, if the disc version information is 'VI.00', the
first to third version information become '1', ' 0', and '0',
respectively.
Assuming that a specification item of a new version is added to the
disc version 'VI.00', the version information will be represented by 'V2.00' if the added specification item is a new physical
specification failing to maintain the compatibility with the
previous version 'VI.00'. The version information will be
represented by 'VI.00' if the added specification item is a new
physical specification maintaining the compatibility with the
previous version 'VI.00'. The version information will be
represented by 'VI.01' if it is addition/change of specification-
editorial having no change of the physical specification item.
In recording the disc version information in the disc, 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 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 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 and to actively cope with the extension of the disc version. FIG. 2 and FI . 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 disc as well as a recordable optical disc is applicable to the present invention. As mentioned in the foregoing description, for convenience of explanation, a Blu-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 DVD-RAM/- RW/+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 Blu-ray disc names it 'disc information' or DVD-RAM/-RW/+W 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 having one 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 is provided on an inner circumference area of an optical disc, whereas a lead-out area is provided on an outer circumference 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 area of the disc. The pre-recorded area is an area where data was already recorded in manufacturing the disc, whereby a user or system is unable to perform data recording on the pre-recorded area at all. In BD-RE/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 a generated defect area. Specifically, TDMA (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 BD-WO. In case of the re-writable BD-RE, TDMA is unnecessary to remain as a reserved area.
The present invention intends to provide a method of recording disc version information efficiently as well as a method of recording speed information for recording and/or reproducing and write strategy (hereinafter abbreviated WS) as disc information in the pre-recorded area.
It is apparent that a recording method in the pre-record area is differently applied to each kind of standardized discs. Yet, in case of BD-RE/WO, the PIC area as the pre-recorded area is recorded by biphased high frequency modulated signals, the high frequency modulated signals in the corresponding area are played back according to a specific playback method, and information is acquired from the playback. FIG. 3 is a structural diagram of a PIC area in the disc shown in FIG. 2. As mentioned in the foregoing description, 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 unit, 544
clusters gather to construct one fragment as one upper record unit,
and total five fragments .gather to form the PIC 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. Moreover, 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.
Information representing the corresponding record layer and speed
and write strategy (WS) corresponding to the record layer and speed
are recorded within each disc information of a recordable optical
disc as well as disc version information. Hence, such information is
utilized in recording and/or reproducing of the corresponding
optical disc, thereby enabling efficient recording and/or reproducing.
If the optical disc is such a playback-only optical disc as BD-ROM,
it is apparent that the speed information for the disc record and
write strategy are not included in the disc information. A method of recording disc version information within the
above-explained disc information is explained in detail through
various embodiments by referring to FIGs . 4 to 10 as follows.
FIG. 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
information 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 '00h, Olh, 02h,...'.
Namely, if the information of the fifth byte is 'OOh' , 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 (WS)
interoperating with the speed meant by the corresponding disc
information is recorded in an area named 'write strategy parameters'
field by (L~lll)th bytes, and information for disc version is
recorded in an area named 'disc version' field by Nth byte.
The 'disc version' field is divided into two parts, in which first
version information is recorded in first four bits and second four
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
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
later.
If the 'disc version' field of Nth byte is '0100 0010b', the first
version information becomes '4' and the second version information
becomes ' 2'. Hence, the version of the corresponding disc is 'V4.2x' .
FIG. 5 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 (BD-RE) is maintained.
Referring to FIG. 5, 11th byte of disc 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
Blu-ray disc (BD) has 12cm size only, '00b' 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 case of 8cm disc, it
can be set to '01b' . Foir 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 is 12cm, the first
version information becomes '1' and the second version information
becomes '2' . 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 another embodiment
of the present invention, in which compatibility with a disc
information recording method in the currently-discussed lx-
rewritable Blu-ray disc (BD-RE) is maintained like the embodiment of
FIG. 5.
Referring to FIG. 6, 4 -bits are allocated to the second version
information and 2 -bits are allocated to the first version
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 example, 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 compatibility 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 physical;- specification 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 1.x, then the drive
should not access the disc with version 2.x to read or write data on
the disc, 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 can 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 version change may
occur, more bits can be allocated to the second version information.
If 11th byte is '00 10 0011b', the disc size is 12cm, the first
version information becomes '2' and the second version- information
becomes '3'. Hence, the version of the corresponding disc is 'V2.3x'.
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 (BD-RE) is maintained like the embodiment of FIG. 5 or FIG. 6. 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 11th byte, whereas 1-byte is allocated to a separate
reserved area (Nth byte) . As mentioned in the foregoing 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 version information. Hence, it is also possible that the second version information is recorded in the 11th byte and the first version information is recorded in the Nth byte.
If the 11th byte is '00 000010b' and the Nth byte is '0000 0100b', the disc size is 12cm, the second version information becomes '4', and the first version information becomes '2'. Hence, the version of the corresponding disc is 'V2.4x'. FIG. 8 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 disc specification version information but recording speed 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 is recorded in an
area named 'Write Strategy parameters' field of Lth~lllth bytes and
information for a recording speed version is recorded in another
specific area named 'Recording Speed Version' field of Nth byte.
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 Nth byte is '0100
0010b', the first and second version information become '4' and '2',
respectively. Hence, it means that the recording speed version of
the corresponding disc is 'V4.2x' .
Therefore, these values indicate an actual speed by binary notation.
L to 111 bytes includes write strategy parameters for each recording
speed, which is 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 information of a current disc and is the version information recorded in Nth byte as 'actual disc version info' field. And, a specific recording method in such a field is the same of that in FIG. 4 and its explanation is skipped 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 present embodiment, 6-bits are allocated to the field to represent compatible version information by a specific bit value. Also, alternative allocation is possible, e.g, 4-bits allocated to the field as version information of fig.l.
If the 11th byte is '00 000010b' and the Nh byte is '0010 0010b', it can be known from the 11th byte that a disc size is 12cm and compatible version information is 'Version 2' (this means that a specific version value can be decided by a specification but fails to mean 'V2.xx'). And, it can be also known from the Nth byte that real disc version information is 'V2.2x'.
Therefore, from the disc version information within the disc information, it is able to read out not only the real version information of the current disc but also the compatible version information.
Thus, the disc version information is recorded in the above-
described manner by a recording/reproducing 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
as follows.
FIG. 10 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
reproducing unit 10 carrying out recording and/or reproducing 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 recording and/or
reproducing for the specific area according to the command of the
control unit 20.
Specifically, the recording and/or reproducing unit 10 includes an
interface unit 12 performing communications with an external device,
e.g., 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 correctly or
controlling the pickup unit 11 to record a signal on the optical
disc correctly, a memory 15 temporarily storing disc control
information including disc version information, and a microcomputer
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.
Industrial Applicability
A recording and/or reproducing process of an optical disc according
to the present invention is explained in detail as follows.
First of all, once an optical disc is loaded in the optical
recording and/or reproducing apparatus, the disc control information
recorded in the disc is read out to be temporarily stored in the
memory 15 of the recording and/or reproducing unit 10. And, various
kinds of the disc control information are utilized for the recording
and/or reproducing of the optical 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 'VI. xx', the microcomputer 16 within the recording
and/or reproducing unit 10 decides that the corresponding disc is
recordable and/or playable if the first version information 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 then 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 version 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, if necessary.
In so doing, the second version information is basically recordable
and/or playable even if it is different. Yet, a recording and/or
reproducing apparatus having higher second version information may
fail to support a certain function, such as the reading or writing
data from or on the optical disc. In such a case, 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 'Vl.lx' and the disc version information read out from the loaded disc is 'VI.3x', the recording and/or reproducing is possible because the first version information is identical. Yet, since the second version information of the loaded disc is '1' and corresponds to a previous version, compared to '3' of the second version information the recording and/or reproducing apparatus supports, a certain function of the recording and/or reproducing apparatus may be unusable .
Therefore, the microcomputer 16 within the recording and/or reproducing apparatus compares the first and second version information recorded in the loaded disc to its version information 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 reproducing of 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 disc version information, and more particularly, using at least two kinds 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 variations can be made in the present invention. Thus, it is intended that the present invention covers the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents.

Claims

Claims
1. A method of recording version information of recording medium, comprising steps of : generating 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 recording medium; and recording the version information on a specific area of the recording medium.
2. The method as claimed in claim 1, wherein the first version information is to determine compatibility for writing or reading between the recording medium- and drive.
3. The method as claimed in claim 1, wherein the second version information is to determine compatibility for writing or reading between the recording medium and drive .
4. The method as claimed in claim 1, wherein the first version information is to determine compatibility between a same kinds of recording medium.
5. The method as claimed in claim 1 , wherein the first and second version information are recorded in a management area within the recording medium.
6. 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.
7. The method as claimed in claim 6, wherein the second version information comprises a first version part and a second version part .
8. The method as claimed in claim 7, 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.
9. The method as claimed in claim 8, wherein the "X" indicates new specifications in the same information recording medium and has an incompatibility with a value lower than "X" in the first version
part .
10. The method as claimed in claim 9, wherein the "Y" indicates an addition to the specifications in the same information recording medium and may have an incompatibility with a value lower than "Y" in second version part w-j-th respect to writing or reading condition.
11. The method as claimed in claim 8, wherein the first and second version parts are allocated by 4-bits respectively.
12. The method as claimed in claim 6, wherein the second version information is represented by one information byte.
13. The method as claimed in claim 12, wherein the first and second version parts are allocated by 4-bits respectively within the one information byte.
14. The method as claimed in claim 6, wherein the first version information is included in one information byte.
15. The method as claimed in claim 14, wherein the first version information is allocated by 4-bits or 6-bits within the one information byte.
16. The method as claimed in claim 2, wherein the first version information has a priority to determine the writing or reading of the recording medium than the second version information.
17. The" method as claimed in claim 16, wherein the first version information determines a compatibility with a drive to read or write data on or from the recording medium.
18. The method as claimed in claim 17, wherein the recording medium is not accessed by the drive if the first version information is not familiar to the drive.
19. The method as claimed in claim 3, wherein the second version information determines a compatibility with a drive to read or write data on or from the recording medium.
20. The method as claimed in claim 19, wherein the recording medium is not read or write by the drive if the second version information is not familiar to the drive.
21. 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.
22. The method as claimed in claim 21, wherein the version information and the size information are allocated by one information byte.
23. The method as claimed in claim 22, 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.
24. A method for recording a control information including a version information on a recording medium, the method comprising a step of: allocating information byte for a version information including first information and second information within the control information, wherein at least one of the first and second information determines a compatibility of recording medium; and recording the information byte on a specific area of the information recording medium.
25. The method as claimed in claim 24, wherein the first
information determines a compatibility with a drive for reading
or writing data on the recording medium.
26. The method as,- claimed in claim 25, wherein the first
information represents an incompatible value if the optical
recording medium is not accessed by the drive.
27. A method of recording control information on an optical
disc, comprising a step of
allocating one information byte for disc size information
indicating a diameter of the disc and disc version information
indicating a disc version within the control information, the
disc version information is separated into a first version
information and a second version information; and
recording the allocated information -byte on a specific area of
the optical disc.
28. The method of claim 27, wherein the disc size information
and the disc version information are recorded together in a
specific information byte within the control information.
29. The method of claim 28, 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.
30. A method for recording a control information on an optical disc, the control information including version information, comprising the steps of: generating the disc version information into first version information compatible with previous version and real version information; and recording the compatible version information and the real version information in at least two separate areas,
respectively.
31. The method as claimed in claim 30, wherein the real version information comprises a first version part and a second version
part .
32. The method as claimed in claim 31, 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.
33. The method as claimed in claim 32, wherein the "X" indicates new specifications in the same optical disc and has an incompatibility with a value lower than "X" in the first version 5 part .
34. The method as claimed in claim 33, wherein the "Y" indicates an addition to the specifications in the same optical disc and may
10 have an incompatibility with a value lower than "Y" in second version part with respect to writing or reading condition.
35. The method as claimed in claim 32, wherein the first and second version parts are allocated by 4-bits respectively.
15
36. 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
20 used to determine to a backward compatibility with respect to reading or writing of the recording medium. .
37. The structure of claim 36, wherein the first version information is used to determine compatibility for
writing or reading between the recording medium and drive.
38. The structure of claim 36, wherein the second version
information is to, determine compatibility for writing or
reading between the recording medium and drive .
39. The structure of claim 37, wherein the first version
information compatibility between a same kinds of recording
medium.
40. The structure of claim 36, wherein the first and second
version information are recorded in a management area within
the recording medium.
41. The structure of claim 36, wherein the first version
information represents a compatible version, and the second
version information represents an actual version.
42. The structure of claim 41, wherein the second version
information comprises a first version part and a second version
part .
43. The structure of claim 42, 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.
44. The structure of claim 43, wherein the "X" indicates new specifications in the same information recording medium and has an incompatibility with a value lower than "X" in the first version part .
45. The structure of claim 44, wherein the "Y" indicates an addition to the specifications in the same information recording medium and may have an incompatibility with a value lower than "Y" in second version part with respect to writing or reading condition.
46. The structure of claim 43, wherein the first and second version parts are allocated by 4-bits respectively.
47. The structure of claim 41, wherein the second version information is represented by one information byte.
48. The structure of claim 47, wherein the first and second version parts are allocated by 4-bits respectively within the one information byte.
49. The structure of claim 41, wherein the first version
information is included in one information byte.
50. The structure of claim 49, wherein the first version
information is allocated by 4-bits or 6-bits within the one
information byte.
51. The structure of claim 37, wherein the first version
information has a priority to determine the writing or reading
of the recording medium than the second version information.
52. The structure of claim 51, wherein the first version
information is used to determine a compatibility with a drive
to read or write data on or from the -recording medium.
53. The structure of claim 52, wherein the data structure is
recorded in a recording medium, the recording medium is not
accessed by a drive if the first version information is not
familiar to the drive.
54. The structure of claim 38, wherein the second version information is used to determine a compatibility with a drive to read or write data on or from the recording medium.
55. The structure of claim 54, wherein the data structure is recorded in a recording medium, the recording medium is not read or written by a drive if the second version information is not familiar to the drive.
56. The structure of claim 36, wherein the structure further characterized in that a size information is included to indicate a diameter of the recording .medium.
57. The structure of claim 56, wherein the version information and the size information are allocated by one information byte.
58. The structure of claim 57, wherei-n 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.
59. A data structure for indicating 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 "Y".to respectively represent the version "X.Y"
by binary notation.
60. The structure of claim 59, wherein the first version information indicates a version lower than the second version
information.
61. The structure of claim 59, wherein the first version information indicates a compatible version information.
62. The structure of claim 61, wherein the second version information indicates an actual version information.
63. A method for recording data on an optical recording medium, comprising 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.
64. A method of recording or reproducing data on or from a recording medium, comprising steps of : reading a control information including version information from a specific area of the 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 recording medium based on the version information.
65. The method as claimed in claim 64, wherein the first version information is used to determine compatibility for writing or reading between the recording medium and drive, thereby determining the reading or writing of data.
66. The method as claimed in claim 64, wherein the second version information is used to determine compatibility for
writing or reading between the recording medium and drive, thereby determining the reading or writing of data.
67. The method as claimed in claim 64, wherein the reading step reads the first and second version information recorded in a management area of the recording medium.
68. The method as claimed in claim 64, wherein the first version information represents a compatible version, and the second version information represents an actual version.
69. The method as claimed in claim 68, wherein the second version information comprises a first version part and a second version part .
70. The method as claimed in claim 69, 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.
71. The method as claimed in claim 70, wherein the "X" indicates
new specifications in the same information recording medium and has
an incompatibility with a value lower than "X" in the first version
part .
72. The method as claimed in claim 71, wherein the "Y" indicates
an addition to the specifications in the same information recording
medium and may have an incompatibility with a value lower than "Y"
in second version part with respect to writing or reading condition.
73. The method as claimed in claim 71, wherein the first and second version parts are allocated by 4-bits respectively.
74. The method as claimed in claim 68-, wherein the second version information is represented by one information byte.
75. The method as claimed in claim 74, wherein the first and second version parts are allocated by 4-bits respectively within the one information byte.
76. The method as claimed in claim 68, wherein the first version information is included in one information
byte.
77. The method as claimed in claim 76, wherein the first
version information is allocated by 4-bits or 6-bits within the
one information byte.
78. The method as claimed in claim 65, wherein the first
version information has a priority to determine the writing or
reading of the recording medium than the second version
information, thereby controlling the writing or reading data on
or from the recording medium based on the first version
information.
79. The method as claimed in claim 78, wherein the controlling
step controls such that the recording medium is not accessed by
the drive if the read first version information is not familiar
to the drive .
80. The method as claimed in claim 3, wherein the second
version information determines a compatibility with a drive to
read or write data on or from the recording medium, thereby
controlling the writing or reading data on or from the recording medium based on the second version information.
81. The method as claimed in claim 80, wherein the controlling step controls such that the recording medium is not read or write by the drive if the second version information is not familiar to the drive.
82. The method as claimed in claim 64, wherein the reading step further reads a size information to indicate a diameter of the recording medium, the size information recorded on the specific area of the recording medium with the version information, thereby determining the size of the recording medium.
83. The method as claimed in claim 82, wherein the version information and the size information are allocated by one information byte within the control information.
84. The method as claimed in claim 83, 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.
85. 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 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.
86. 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 "Y" to represent "X" and "Y" respectively for
the version "X.Y" by binary notation.
PCT/KR2004/001551 2003-08-14 2004-06-25 Information recording medium, method of configuring version information thereof, recording and reproducing method using the same, and recording and reproducing apparatus thereof WO2005017885A1 (en)

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JP2006523119A JP4880460B2 (en) 2003-08-14 2004-06-25 Information recording medium, method for recording version information on information recording medium, and recording / reproducing method and recording / reproducing apparatus using the same
MXPA04007508A MXPA04007508A (en) 2003-08-14 2004-06-25 Information recording medium, method of configuring version information thereof, recording and reproducing method using the same, and recording and reproducing apparatus thereof.
CA2474892A CA2474892C (en) 2003-08-14 2004-06-25 Information recording medium, method of configuring version information thereof, recording and reproducing method using the same, and recording and reproducing apparatus thereof
BR0402879-1A BRPI0402879A (en) 2003-08-14 2004-06-25 Information recording method, control information recording method, data structure, data recording methods, data recording or playback methods, and recording medium
CN2004800008544A CN1768377B (en) 2003-08-14 2004-06-25 Recording method of information recording medium
EP04737219.8A EP1654729B1 (en) 2003-08-14 2004-06-25 Information recording medium, method of configuring version information thereof, recording and reproducing method using the same, and recording and reproducing apparatus thereof

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