CN1867985B

CN1867985B - Device and method for managing write-once optical disc

Info

Publication number: CN1867985B
Application number: CN2004800296128A
Authority: CN
Inventors: 朴容彻
Original assignee: LG Electronics Inc
Current assignee: LG Electronics Inc
Priority date: 2003-09-08
Filing date: 2004-09-02
Publication date: 2011-12-21
Anticipated expiration: 2024-09-02
Also published as: CN1871657B; CN1867985A; CN1871655B; CN1871657A; KR20050025450A; CN1871655A

Abstract

A write-once optical disc and a method and apparatus for recording management information on the disc are provided. The method includes recording an opened SRR information on a recording medium, and removing an identification of a certain SRR from the opened SRR information once the certain SRR is closed. The opened SRR information carries an identification of any opened SRR, and the number of opened SRRs allowed is at most a predetermined number.

Description

The method and apparatus of management CD-WORM

Technical field

The present invention relates to CD-WORM, be used for the method for records management information on this CD-WORM, and the record/playback apparatus that uses this method.

Background technology

As a kind of optical record medium, the CD that can write down high density data just is widely used.In these CDs, developed for example novel high-density optical record medium (HD-DVD) of blue light (Blu-ray) CD and so on recently, be used for long record and storage high-definition video data and high quality audio data.

Blu-ray Disc is HD-DVD technology of future generation and optical recording solution of future generation, and compares with existing DVD, and it has the capacity of fabulous storage data.Recently, formulated the international standard technical specification of HD-DVD.Relevant therewith, following to rewrite Blu-ray Disc (BD-RE) standard, formulating the various standards of write-once Blu-ray Disc (BD-WO).

In these write-once Blu-ray Disc (BD-WO) standards, the records management information method is discussed especially.This method comprises: about the recording of information method of the recording status of display disc.The information of the recording status of dish is one of characteristic of CD-WORM.The recording status of this recording status information representative dish, but and allow main frame or user easily to find recording areas on the CD-WORM.For existing CD-WORM, be different to the appellation of this information.For example this information is called as optical information for CD, is called as RZone (Zone R territory) or fragment (fragment) for DVD.

Therefore, need the method for a kind of effective record corresponding to the management information of high density compact disc recording status.And this method should be provided to guarantee compatible with standardized information.In addition, need the method for management information on a kind of recording disk, can be applied to write-once high density compact disc and Blu-ray disc and be used to carry out defect management.

Summary of the invention

Therefore, the method that the present invention relates to a kind of CD-WORM and manage this dish, they have fully been eliminated because the limitation of prior art and one or more problems that shortcoming causes.

An object of the present invention is to provide a kind of method and apparatus that is used to write down the management information of CD-WORM, they can more effectively write down and manage the recording status information of CD.

Another object of the present invention is a kind of different journal scope (SRR) type of definition, and a kind of method and apparatus that SRR is recorded in SRR information (SRRI) is provided.

Another object of the present invention is to provide a kind of structure of CD-WORM and the structure of SRRI, to make things convenient for the recording/playback operation of this dish.

A further object of the present invention is to provide method and a kind of record/playback apparatus of the method for a kind of SRRI of record that can be applied to CD-WORM, a kind of SRRI of recovery.

The present invention relates to the method that a kind of management has comprised the once writing recording medium of one or more journal scopes, described recording medium has disc management area, when described recording medium will be closed, described disc management area was used for management information is stored in wherein, and described method comprises step:

Recording step, wherein writing down the open ended sequential recording interval tabulates and will be closed up to described recording medium on the temporary disk (T-disk) directorial area, the sign of each the open ended sequential recording interval in first session of described recording medium is carried in the tabulation of described open ended sequential recording interval, and the number of the open ended sequential recording interval that is wherein allowed mostly is a predetermined number most;

Close described first session, wherein when described first session is closed, each the open ended sequential recording interval in described first session is changed and is the closing sequence recording interval the unwritten zone of last open ended sequential recording interval in described first session;

After described first session is closed, in described recording medium, produce second session, the unwritten zone of last open ended sequential recording interval becomes the opening entry scope of described second session in wherein said first session; And

On the new temporary disk (T-disk) directorial area of tabulating of record open ended sequential recording interval, but but the new tabulation of described open ended sequential recording interval does not comprise the sign that becomes the recording interval in first session that does not have the closing sequence of writing position recording interval from the open ended sequential recording interval with writing position.

The invention still further relates to a kind of device that is used to manage the once writing recording medium that has comprised one or more journal scopes, described recording medium has disc management area, when described recording medium will be closed, described disc management area was used for management information is stored in wherein, and described device comprises:

Pickup unit disposes described pickup unit with directly at described recording medium identifying recording layer or directly reproduce the tabulation of open ended sequential recording interval from described recording medium reproducing data and in the tabulation of temporary control and education district record open ended sequential recording interval or from described temporary control and education district; Described open ended sequential recording interval tabulation comprises the sign of each open ended sequential recording interval;

Servo unit disposes described servo unit and reads signal or tracer signal to described recording medium to control described pickup unit from described recording medium;

Data processor disposes the signal of described data processor to recover to be suitable for described recording medium from the signal or the modulation of described pickup unit reception;

Storer disposes described storer to store the management information of described recording medium provisionally; And

Operationally be coupled to the microcomputer of above-mentioned pickup unit, servo unit and data processor, dispose described microcomputer and control described pickup unit, servo unit and data processor, wherein

Disposing described microcomputer controls described pickup unit record open ended sequential recording interval and tabulates and will finally be changed up to described recording medium on the temporary disk (T-disk) directorial area, the sign of each open ended sequential recording interval in first session of described recording medium is carried in the tabulation of described open ended sequential recording interval, the number of the open ended sequential recording interval that is wherein allowed mostly is a predetermined number most, disposing described microcomputer controls described device and closes described first session, wherein when described first session is closed, described microcomputer will be in described first session each open ended sequential recording interval in described first session the unwritten zone of last open ended sequential recording interval become the closing sequence recording interval; Dispose described microcomputer and control described device after described first session is closed, produce second session in described recording medium, wherein said microcomputer becomes the unwritten zone of open ended sequential recording interval last in described first session opening entry scope of described second session; And dispose described microcomputer and control on the new temporary disk (T-disk) directorial area of tabulating of described pickup unit record open ended sequential recording interval, but but the new tabulation of described open ended sequential recording interval does not comprise the sign that becomes the recording interval in first session that does not have the closing sequence of writing position recording interval from the open ended sequential recording interval with writing position.

The invention still further relates to a kind of device that is used to manage the recording medium that has comprised one or more journal scopes, described recording medium has disc management area, when described recording medium will be closed, described disc management area was used for management information is stored in wherein, and described device comprises:

Pickup unit disposes described pickup unit with directly at described recording medium identifying recording layer or directly comprise the management information of open ended sequential recording interval tabulation or from the described management information that comprises the tabulation of open ended sequential recording interval of reproducing in the temporary control and education district from described recording medium reproducing data and at temporary control and education district record;

Operationally be coupled to above-mentioned pickup unit, the microcomputer of servo unit and data processor, dispose described microcomputer and control described pickup unit, servo unit and data processor, wherein dispose described microcomputer and control first session that described device is closed described recording medium, wherein when described first session was closed, each the open ended sequential recording interval in described first session the unwritten zone of described microcomputer change last open ended sequential recording interval in described first session was the closing sequence recording interval; Dispose described microcomputer and control described device after described first session is closed, produce second session in described recording medium, wherein said microcomputer becomes the unwritten zone of open ended sequential recording interval last in described first session opening entry scope of described second session; And dispose described microcomputer and control the new administration information of new tabulation that described pickup unit record comprises the open ended sequential recording interval on the temporary disk (T-disk) directorial area, but but the new tabulation of described open ended sequential recording interval does not comprise the sign that becomes the recording interval in first session that does not have the closing sequence of writing position recording interval from the open ended sequential recording interval with writing position.

The part of other advantage of the present invention, purpose and feature will provide in the following description, and a part will be by it will be apparent to those skilled in the art that to the check of following content or by practice of the present invention is become.Purpose of the present invention and other advantage can realize by the structure that particularly points out in the instructions of being write and claims and accompanying drawing and obtain.

Should be understood that above general description of the present invention and following detailed description are exemplary and explanat and aim to provide stated of the present invention and further specify.

Description of drawings

Be contained in this and be used to provide accompanying drawing example further understanding of the present invention, that be incorporated into this part that also constitutes the application is illustrated embodiments of the invention, and explain principle of the present invention together with the description.In the accompanying drawing:

Fig. 1 illustrates the structure of CD-WORM according to an embodiment of the invention;

Fig. 2 A to 2D illustrates the different open SRR type according to CD-WORM shown in Figure 1 of the present invention;

Fig. 3 A to 3E illustrates the different SRR types of closing according to CD-WORM shown in Figure 1 of the present invention;

Fig. 4 A to 4G illustrates the example of Fig. 1 according to the present invention to the process of the generation SRR of CD-WORM shown in Fig. 3 E and session;

Fig. 5 A illustrates the example according to the SRR entry structure of the first embodiment of the present invention;

Fig. 5 B and Fig. 5 C illustrate the example according to SRR entry structure shown in use Fig. 5 A of the first embodiment of the present invention;

Fig. 6 A illustrates the example of SRR entry structure according to a second embodiment of the present invention;

Fig. 6 B and Fig. 6 C illustrate the example of SRR entry structure shown in according to a second embodiment of the present invention use Fig. 6 A;

Fig. 7 A illustrates according to the present invention to Figure 11 B, relies on the example of the dish recording status record SRRI in the CD-WORM shown in Figure 1;

Figure 12 is according to one embodiment of the invention, shows the process flow diagram that uses the method for CD-WORM SRRI when up-to-date SRRI damages;

Figure 13 A and Figure 13 B are according to one embodiment of the invention, show the method for storing up-to-date SRRI in CD-WORM again; And

Figure 14 illustrates according to one embodiment of the invention, is used for the record/playback apparatus of CD-WORM.

Embodiment

Now will be in detail with reference to preferred embodiment of the present invention, its example example illustrates in the accompanying drawing.In the case of any possible, running through accompanying drawing uses identical reference number to refer to identical or similar parts.

According to the present invention, form a plurality of zones in the CD-WORM, such as BD-WO, and in these recording areas each all is called as journal scope (SRR).Executive logging operation or execution are from these regional playback on these zones.The information that indicates the dish recording status will be called as " journal range information " (SRRI), mean that it is applied to the sequential recordng mode of this dish.SRRI belongs to one or more SRR.

Fig. 1 illustrates the structure and the method that is used for indicator management information according to the CD-WORM such as BD-WO of the present invention.As example, dish shown in Figure 1 has single recording layer.But the present invention is not limited thereto, but applicable to the dish with bilayer or several record layers.

With reference to figure 1, dish comprises introduces district, data field and draw-out area, and all these zones all are positioned at recording layer.Introduce district and draw-out area and have a plurality of dishes (or defective) directorial area (DMA 1-DMA 4), be used for repeatedly storing identical defect management information.In the data field, the interior spare area ISA0 and/or the outer spare area OSA0 that are used to replace defective zone are provided.

Known CD-RW does not have or needs big DMA, because its DMA can repeatedly be write and wipe, also is like this even dish has the DMA of limited size.For really not so for the CD-WORM the BD-WO.Since CD-WORM can not be on the zone that once was recorded record again, so CD-WORM needs and has a bigger directorial area.For more efficiently management information, in CD-WORM, management information temporarily is stored in the temporary defect management area (TDMA).When dish be ready to finally finish/when closing, be stored in final/management information among the TDMA is just transferred to and is used for more permanent storage among the DMA recently.

As shown in Figure 1, there are two types TDMA:TDMA0 and TDMA1.TDMA0 distributes to introduce the district and have fixing immutable size.TDMA1 distributes to outer spare area OSA0 and has the size that changes according to the size of spare area.For example, the big or small P of TDMA1 is P=(N * 256)/4 (N is a positive integer), and be whole outer spare area OSA0 size 1/4th.

In each of TDMA0 and TDMA1, can with temporary defect list (TDFL) information and temporary disk (T-disk) definition structure (TDDS) information together (TDFL+TDDS) be recorded in the record cell (for example being bunch (cluster) under the situation of BD-WO); Perhaps can as show with SRRI and TDDS together (SRRI+TDDS) be recorded in the record cell.Record SRRI then uses SBM (space bit map) when using recorded at random when using journal.

During each the renewal, just in one bunch size, be recorded in the TDMA with (TDFL+TDDS) or (SRRI+TDDS).In example shown in Figure 1, TDFL and TDDS are recorded in bunch of TDMA0, and SRRI and TDDS are recorded in the next one bunch of TDMA0, and SRRI and TDDS are recorded in next again bunch of TDMA0 or the like.

If defect area in the data field, occurs, use the spare area to its process that substitutes with regard to carrying out.TDFL is the information of this process of management as defect list.Under the situation of single-layered disk, use 1 bunch to 4 bunches record TDFL according to the size of defect list.It is to have write down or record not that disc status information is indicated the specific region of this dish.More specifically, it can be effectively applied to write down with order or incremental record mode the situation of this dish.In addition, usually TDDS information is recorded in one bunch of the directorial area on last sector in 32 sectors.Be recorded a part about the important information of the Routine Management of this dish and defect management as TDDS information, and last this TDDS information of record during new administration information more in TDMA usually.

The invention provides the method for recording disk recording status information in such as the novel high-density CD of BD-WO.More specifically, use the recording status information of SRRI as this dish recording status of indication.Each SRRI belongs to the one or more SRR (recording areas) on this dish.The present invention has defined various SRR types, and this will discuss with reference to figure 2A to Fig. 3 E subsequently.Referring now to Fig. 1 discussion according to SRRI structure of the present invention.

As shown in Figure 1, each SRRI 60 in the TDMA generally includes three parts: be used to discern the head 50 of corresponding SRRI, the SRR tabulation terminal symbol 40 that comprises the tabulation (tabulation of SRR entry) 30 of the SRR entry of SRR type information and be used to represent corresponding SRRI end.

SRRI head 50 is positioned at the front portion of corresponding SRRI 60, and comprise " SRRI structural identifier " field 51 of being used to discern corresponding SRRI, " open SRR tabulation " field 52 of the position that is used to identify each the open SRR that belongs to this current SRRI, " opening the SRR number " field 54 that is used to identify " the SRR write down item number " field 53 of SRR sum and is used to identify open SRR quantity.The SRR number (sign) of " open SRR tabulation " field 52 storing open SRR.

By visit SRRI head 50, needn't directly visit SRR entry tabulation 30, just can know the general contents of whole SRRI 60.This is the possibility any new SRR type of redetermination or other necessary information just, and as required this information is inserted in the head 50.

SRR entry tabulation (" tabulation of SRR entry ") 30 is recorded in after the SRRI head 50.When SRR entry tabulation 30 finished, the end of SRR entry tabulation 30 was identified by the SRR terminal symbol (" SRR tabulate terminal symbol ") 40 of tabulating.Specifically, SRR tabulation terminal symbol 40 is the information that the corresponding SRRI of sign finishes when SRR information has variable-size.

SRR entry tabulation 30 is the tabulations of having collected a plurality of SRR entries 35 therein.Each SRR entry 35 is assigned 8 bytes (or 64), 35 representatives of SRR entry on this dish about the information of a SRR.Each SRR entry 35 comprises SRR mode field 31, be used to store origing address field (OAF) 32, the reserved area 33 of start address of corresponding SRR and the LRA field 34 that is used for the last recording address (LRA) of corresponding SRR.According to an embodiment, 4 highest significant positions in 64 of SRR entry 35 (position 63 to the position 60) are assigned to SRR mode field 31, SRR entry 35 ensuing 28 (position 59 to the position 32) is assigned to origing address field (OAF) 32, and SRR entry 35 ensuing 4 (position 31 to the position 28) is assigned to reserved area 33 and SRR entry 35 last 28 (position 27 to the position 0) is assigned to LRA field 34.

Therefore, comprise head, the tabulation of SRR entry and SRR tabulation terminal symbol as the SRRI information of management information, all these information when each the renewal all by co-registered.

One object of the present invention is to define and distinguish the various SRR types that form and uses their indicators or playback from dish in dish.Therefore, according to the present invention,, and will describe the method that the information of SRR type in the SRRI distinguished in record in detail with the type of definition SRR.

More specifically, SRR is retained in order to record about such as the data of the CD-WORM of BD-WO or the zone of information.The present invention is according to the type of necessity and/or record progress definition SRR.Following will providing detailed description with reference to figure 2A to 3E by the various SRR types of the present invention definition.

Fig. 2 A to 2D shows the various open SRR type that is used for CD-WORM (such as BD-WO) according to of the present invention.Open SRR is meant the recordable SRR of its respective regions." recordable " is meant the address (NWA) that has the next one and can write.Therefore, opening SRR is the SRR with NWA.There is not the SRR that can not write down of NWA to close SRR.That is to say that closing SRR is the SRR that can not write down or not have NWA.Closing the SRR type will describe with reference to figure 3A to 3E after a while.

More specifically, Fig. 2 A shows the invisible SRR among the open SRR.This sightless SRR is formed in the outmost turns part of dish or original blank disc and is meant not recording areas.In other words, invisible SRR has only start address, and the not ending of its zone.Because executive logging not in invisible SRR, so its LRA is zero.It is identical with its start address value that the NWA of this sightless SRR becomes.

Fig. 2 B shows the imperfect SRR among the open SRR.This incomplete SRR is to the SRR of the part executive logging of this SRR when SRR is in sightless SRR state.In other words, imperfect SRR has start address, but the not ending of its zone.Because to some part executive logging of this SRR, therefore the LRA of this imperfect SRR is the last recording areas of normal data record.Therefore, the NWA of imperfect SRR is an address of and then (following) LRA of SRR.

Fig. 2 C shows the empty SRR among the open SRR.Different with imperfect SRR with the invisible SRR of Fig. 2 A and 2B, this sky SRR is the SRR that generally is formed on the dish zone line, but not is formed on the outmost turns magnetic track of dish.In other words, this is to form after the open SRR as yet the not situation of executive logging for main frame or user record.Empty SRR has start address and end address.But because empty SRR indication prerecord state, so LRA is zero and NWA has the value identical with the start address of this SRR.

Fig. 2 D shows the partial record SRR among the open SRR.This partial record SRR is to the SRR of the part executive logging of this SRR when SRR shown in Fig. 2 C is in sky SRR state.Therefore, part SRR has start address and end address.Because to some part executive logging of this SRR, so the LRA of the SRR of this partial record is that last recording areas and NWA are the addresses of LRA and then.

According to one embodiment of present invention, allow open SRR number to be defined as a predetermined value in advance, because be difficult in a large amount of open SRR of management on the CD-WORM.For example in the situation of BD-WO, the sum of the open SRR that is allowed at given time is 16 to the maximum.Obtain about the position of open SRR and the information of number in coiling by " the open SRR tabulation " field 52 in the SRRI head 50 that detects Fig. 1 and " open SRR number " field 54.

Fig. 3 A to 3E shows according to the difference of the CD-WORM such as BD-WO of the present invention and closes the SRR type.Close that SRR is meant the SRR that can not write down and " can not write down " is meant that SRR does not have NWA.Therefore, can form and close SRR by finishing record to SRR.But both made the recording areas residue was arranged in SRR, but still can be by the shutdown command forced closing SRR of user/main frame.

More specifically, Fig. 3 A shows the empty SRR that closes among the SRR.This sky SRR is the SRR that is closed by the shutdown command of not writing down SRR when SRR is in sky SRR state shown in Fig. 2 C.Thus, Fig. 3 A closes example of sky SRR and Fig. 2 C is the example of open empty SRR.

Fig. 3 B shows the partial record SRR that closes among the SRR.This partial record SRR is the SRR that is closed by the shutdown command of additional records SRR not when SRR is in partial record SRR state shown in Fig. 2 D.Thus, Fig. 3 B is the example of closed portion record SRR and Fig. 2 D is the example of open portion record SRR.

Fig. 3 C shows the complete S RR that closes among the SRR.This complete S RR is the SRR that records its regional end position with normal user data fully.Complete SRR only exists in closing SRR.

Fig. 3 D shows another example of the closed portion record SRR that closes among the SRR.But the SRR that some recording areas (after LRA) of using specific empty data to fill SRR when this SRR type relates to the record SRR that opens in the part of closed Fig. 2 D is closed afterwards.But the complete area of SRR recording areas or subregion all can be filled by empty data.As variation, can use specific character code (ascii character) to replace empty data to be used to fill this SRR.This padding data can be used for indicating this SRR to close.In an example, the specific character as padding data can be that the corresponding SRR of indication is " CLSD " that closes.In another embodiment, can use empty data zero, make, just can determine that this SRR closes SRR if detecting SRR has this empty data.When filling open SRR when closing it, but then can use padding data to write down at least a portion of the recording areas of this SRR.This part of SRR can be at least one record cell such as bunch, and can be first bunch after the LRA.That is to say, when closing open SRR, can be filled from least one record cell of the initial open SRR of its NWA.

Fig. 3 E shows another example of closing sky SRR of closing among the SRR.But relating to, this SRR type when closing open empty SRR shown in Fig. 2 C, use padding data to fill the SRR that closes after some recording areas of SRR.In Fig. 3 D, use aforesaid padding at this.

Shown in Fig. 3 A to 3B and 3D to 3E, become when closing SRR when using shutdown command will open SRR, do not have and do not close not the situation of recording areas (Fig. 3 A and 3B) with filling and closing not the situation of recording areas (Fig. 3 D and 3E) with filling by different definition.

Similarly, filling be can optionally realize not having and the situation of SRR and the situation of after using specific padding data filling, closing SRR closed.Under the situation of existing Blu-ray disc, both made and do not filled, not recording areas also with playback CD compatibility only.Record/playback apparatus (Figure 14) can optionally be carried out padding, guarantees the degree of freedom of record/playback apparatus in structure/operation thus effectively.In addition, in padding, the recording/playback of record/playback apparatus part (for example assembly 10 of Figure 14) can the pre-stored padding data and is write down SRR as required automatically.This when sending padding data when controller and the filling that occurs thereafter compare, just shortened the time of padding.

In addition, if but in the SRR part (for example LRA after first bunch) of recording areas in SRR closes, fill with specific data, lose even SRRI then occurs, also can recover current plate-like attitude effectively.To be described in detail this kind character of the present invention subsequently with reference to figure 7A to Figure 13 B.

Fig. 4 A to 4G shows the example that forms the SRR process according to one embodiment of the invention in Fig. 1 to Fig. 3 E.In these and other accompanying drawings, represent the NWA position by the part that thick arrow indicates.To define and describe in the lump different conversation type according to the present invention here.

" session " is the upper strata record cell of comparing with lower floor record cell (such as SRR), and comprises at least one SRR.And because at given time, but only may there be a recording conversation in the dish, so must after all aforesaid assign sessions are closed, could distribute new session.Therefore, under the situation of closing a session, all SRR that exist in this session must be closed simultaneously.Similarly, but each SRR can close each SRR by filling in this SRR all or part of zone of recording areas, but perhaps can not fill the recording areas of this SRR as mentioned above and close.This operation can optionally be carried out by video disc recording/playback reproducer.

Session can be divided into three dissimilar: the null session that only has an invisible SRR; Except invisible SRR, also has the incomplete session of at least one open SRR; And complete session with one or more SRR of closing.

Specifically, but Fig. 4 A shows the initial blank disc that Zone Full all is in recording status.The reference position of this dish just becomes NWA.In this state, only has a SRR on the dish.This is identical with invisible SRR shown in Fig. 2 A.Therefore, the described session here is in the dish original state that wherein only has a null session.

Fig. 4 B shows the situation when the blank disc of Fig. 4 A is not closed by the session of partial record or Fig. 4 A.Under this state, dish only has a SRR.This is identical with incomplete SRR shown in Fig. 2 B.Therefore, the described session here is in the state that an incomplete session is only arranged.

Fig. 4 C shows the situation of carrying out the session shutdown command when dish is in Fig. 4 B state.At this moment, the session shutdown command just is distinguished into the data recording that exists the SRR that independently closes and creates new (sky) session.In other words, the whole recording areas among Fig. 4 B have just become the complete S RR#1 that constitutes complete session #1 successively.Subsequently, recording areas has not just become the invisible SRR (referring to Fig. 2 A) that constitutes null session successively.

Fig. 4 D shows the situation that keeps two open SRR in the null session of Fig. 4 C.Each open SRR that keeps recently just becomes sky SRR and has NWA.The remaining area of this null session forms invisible SRR.The result is that the null session of Fig. 4 C becomes incomplete session.

The situation of record data among first empty SRR that Fig. 4 E shows at Fig. 4 D and the invisible SRR.Because this record, the first empty SRR becomes the open invisible SRR of partial record SRR and then becomes imperfect SRR.

Fig. 4 F shows from the state of Fig. 4 E and carries out the session shutdown command, but not with closing the not situation of recording areas of this session with filling.When closing this session, must close all SRR that are included in this session.For example, just make that by the session shutdown command the existing data recorded area of incomplete session becomes independent completion session (complete session #2) among Fig. 4 E.Be included in all SRR in the complete session #2 and just become SRR#2, the empty SRR#3 that closes and the complete S RR#4 that closes the partial record that SRR closes with formation.Remaining outer course SRR just becomes the invisible SRR#5 as open SRR, and creates the new reservation null session #3 with invisible SRR#5.

Fig. 4 G shows the state of Fig. 4 E is carried out the session shutdown command, but uses the not another kind of situation of recording areas of this session of closing of filling.That is to say that process of the present invention can enter the state of Fig. 4 F or Fig. 4 G from the statusline of Fig. 4 E.Referring to Fig. 4 G, make that by the session shutdown command available data recording areas of incomplete session becomes independent completion session #2 among Fig. 4 E.As after the empty data of above-mentioned usefulness or designated character data fill the part or all of remaining area of complete session #2, be included in all SRR among this complete session #2 and just become and close SRR.As filling the result, three kinds of types of closing SRR in complete session #2, have been kept.They are: the SRR from open partial record after filling becomes the SRR#2 that closes that closes SRR; After filling, become and close closing SRR#32 and becoming the complete S RR#4 that closes SRR of SRR because the routine of physics user area writes down from open empty SRR.But filled whole recording areas though Fig. 4 G shows in the closing of SRR, the present invention also comprises the situation of only filling a SRR part (for example the first behind the LRA or bunch).

According to the present invention, when closing SRR, can be according to whether dissimilar SRR being created in SRR execution filling shown in Fig. 4 F or 4G.Therefore just need a kind of method that writes down new SRR information, the define styles that can distinguish SRR is correctly to indicate the recording status of dish.

After this, will a kind of method of discerning the SRR type be described.For convenience of explanation, the situation that this method will be applied to the SRR entry of SRRI among Fig. 1 is described.SRR type identification according to the present invention is to carry out according to the filling of closing SRR, and it is evident that and can make various modifications and variations to it in the present invention.

Fig. 5 A shows first embodiment according to SRR entry of the present invention.With each the SRR entry 35 in Fig. 1 of the SRR entry structure applications shown in Fig. 5 A, but any other SRR entry that also can be applied to coil.As shown in the figure, SRR entry 35 comprises SRR mode field 31, origing address field (OAF) 32, reserved field 33 and LRA field 34 as mentioned above.SRR mode field 31 has carried wherein that to be used to distinguish corresponding SRR be that band is filled or band is filled 4 SRR status informations of closing.

More specifically, 1 of 4 SRR status informations (31a) is used to discern whether corresponding SRR is carried out the filling sign (after this being called " P sign ") of filling in the SRR mode field 31, and other in the SRR mode field 31 3 (31b) then are used to deal with in the future the reserved area of standard modification in case of necessity.For example, 3 (b62-b60) that first (b63) carries P standard SRR mode field 31 remainders in the SRR mode field 31 are then as the reserved area.Yet other variation also is possible.

For example, if the value of P sign is " 1b ", the corresponding SRR of this expression is the SRR that closes of wherein executed filling.If the value of P sign is " 0b ", the corresponding SRR of this expression is the SRR that does not wherein carry out filling.In the P sign, can use other value.Therefore, if the value of P sign is " 0b ", then Dui Ying SRR can be open SRR or close SRR.If but corresponding SRR registered SRR in " tabulation of open SRR " field 52 SRRI head 50 in represents that then it is opening SRR; If but it is unregistered, just represent that it is the SRR that closes.

The pairing address of reference position of the corresponding SRR of record in the origing address field (OAF) 32 of SRR entry 35.In general, this is expressed as physical sector number (PSN).Provide the reserved area/field 33 of SRR entry 35 to be used for the modification of in the future required standard.

The LRA field 34 of SRR entry 35 provides the LRA information of corresponding SRR.That is to say that record is about the information of the end address of the physical record user data (except padding data) of corresponding SRR.In other words, under the situation of complete S RR, the end address of LRA and SRR is consistent with each other.Yet partial record SRR situation under, the end address of LRA and SRR is not consistent with each other.LRA is the regional address of record physics user data.Even write down the padding data of appointment by padding in SRR, the LRA value of this SRR also is constant.And under the situation of empty SRR, because do not write down the zone of physics user data, so the LRA of SRR becomes 0.

Fig. 5 B and 5C show two different instances of coming P sign among the record diagram 5A based on the method for creating the SRR entry according to first embodiment of the invention.For convenience, Fig. 5 B shows wherein not the situation of carrying out Fig. 4 F that fills in the closing of SRR, and Fig. 5 C shows the situation of wherein carrying out Fig. 4 G of filling in SRR closes.

With reference to figure 5B, give five SRR SRR #1 to #5 respectively in proper order.SRR#1 is unfilled complete S RR, and its state is indicated by " 0b " of P sign in corresponding SRR entry.SRR#2 is the unfilled partial record SRR that closes, and its state is indicated by " 0b " of P sign in corresponding SRR entry.SRR#3 is the unfilled sky SRR that closes, and its state is indicated by " 0b " of P sign in corresponding SRR entry.SRR#4 is unfilled complete S RR, and its state is indicated by " 0b " of P sign in corresponding SRR entry.SRR#5 is unfilled invisible SRR, and its state is indicated by " 0b " of P sign in corresponding SRR entry.

Under the situation of Fig. 5 B, all SRR indicate the nothing filling by " 0b " of P sign.Open SRR only is SRR#5 (invisible SRR).Therefore, only there is SRR#5 to be recorded in " the first open SRR " of " tabulation of open SRR " field 52 interior conducts in maximum 16 possible open SRR of SRRI head 50." second to the 16th open SRR " then zero setting of field (Fig. 7 D) of the remainder of field 52.

With reference to figure 5C, give five continuous SRR SRR #1 to #5 respectively once more.SRR#1 is unfilled complete S RR, and its state is indicated by " 0b " of P sign in corresponding SRR entry.SRR#2 is the partial record SRR that closes that has filling, and its state is indicated by " 1b " of P sign in corresponding SRR entry.SRR#3 is the empty SRR that closes that has filling, and its state is indicated by " 1b " of P sign in corresponding SRR entry.SRR#4 is unfilled complete S RR, and its state is indicated by " 0b " of P sign in corresponding SRR entry.SRR#5 is unfilled invisible SRR, and its state is indicated by " 0b " of P sign in corresponding SRR entry.

Under the situation of Fig. 5 C, three SRR#1, #4 and #5 are indicated not have by " 0b " of P sign and fill.Two SRR#2 and #3 have indicated filling by " 1b " of P sign.Open SRR is SRR#5 (invisible SRR).Therefore, only there is SRR#5 to be recorded in " tabulation of open SRR " field 52 interior conducts " the first open SRR " of SRRI head 50.All the other of field 52 " second to the 16th open SRR " then zero setting of field.

Therefore, by in first embodiment, definition P in the SRR mode field of SRR entry being indicated, can further distinguish and close the dissimilar of SRR.In the SRR entry, can have LRA and initial address message (IAM).For example, in Fig. 3 C, 3D and 3E, as seen, in the SRR that these are closed, can distinguish SRR mutually owing to the mutual difference of LRA position.Yet comparison diagram 3B and 3D close SRR and have identical LRA.In the case, be very difficult by LRA identification SRR type.In the case, just need distinguish SRR according to the padding of using the P sign.Similarly, in Fig. 3 A and 3E, can distinguish the SRR type according to the padding of using the P sign.

According to one embodiment of present invention, in order to distinguish the type of SRR, provide a kind of direct representation SRR filling in filling bunch whether to exist and need not in the SRR entry, to use the method for P sign record about the information of filling existence.It is evident that this method comprises within the scope of the invention.In the method, can seek predetermined filling data in this SRR (for example empty data or appointment real data) for the type of difference SRR and whether exist.

Fig. 6 A shows second embodiment according to SRR entry of the present invention.With SRR entry structure applications each SRR entry 35 in Fig. 1 of Fig. 6 A, but any other SRR entry that also can be applied to coil.As shown in the figure, SRR entry 35 comprises SRR mode field 31, origing address field (OAF) 32, reserved field 33 and LRA field 34 as mentioned above.More specifically, 4 SRR status informations are stored in the SRR mode field 31, and be used to distinguish corresponding SRR be band fill or band fill and close and the corresponding SRR of difference whether be the initial SRR of session.But because identical with shown in Fig. 5 A of origing address field (OAF) and the LRA field of SRR entry among Fig. 6 A, so just omit description of them.

Need be used for the additional areas (for example, entering border (boarder-in/boarder-out), border/draw) of differentiate one session from another such as the prior art of DVD, but the overall recording capacity that additional areas can the reduction dish.Therefore, the present invention advantageously provides the information of identification conversation start, thereby need not the allocation exterior domain and only use the session sign just can check the session structure of whole dish easily.

Therefore, the SRR mode field 31 of SRR entry 35 as shown in Figure 6A comprises it being to carry 1 (31a) that is used to be identified in the P sign of whether carrying out filling in the corresponding SRR, and is used as whether session sign (after this being called " S sign ") is the another one (31c) of conversation start SRR (conversation start) to discern corresponding SRR.In the SRR mode field 31 other 2 (31d) then keep as the reserved area to deal with the modification of standard aspect in case of necessity in the future.Be similar to the example of Fig. 5 A, if the value of the sign of the P in Fig. 6 A is " 1b ", then the corresponding SRR of expression is the SRR that closes of wherein executed filling.If the value of P sign is " 0b ", the corresponding SRR of this expression is the SRR that does not wherein carry out filling.Therefore, if the value of P sign is " 0b ", then Dui Ying SRR can be open SRR or close SRR.If but corresponding SRR registered SRR in " tabulation of open SRR " field 52 SRRI head 50 in represents that then corresponding SRR is opening SRR; If but it is unregistered, just represent that corresponding SRR closes SRR.

In addition, in the example of Fig. 6 A, if the value of S sign is " 1b ", then the corresponding SRR of expression is the SRR of conversation start.If the value of S sign is " 0b ", the corresponding SRR of this expression is not the SRR of conversation start.In S sign/P sign, can use other value.

Fig. 6 B and 6C show based on the method for creating the SRR entry according to second embodiment of the invention and come two examples that P indicates and S indicates among the record diagram 6A.For convenience, Fig. 6 B shows the situation of wherein not carrying out Fig. 4 F that fills in SRR closes, and Fig. 6 C shows the situation of wherein carrying out Fig. 4 G that fills in SRR closes.

With reference to figure 6B, in this example, give five continuous SRR SRR #1 to #5 respectively and this session comprises two complete session #1 and #2 and a null session #3.

SRR#2 among Fig. 6 B is the unfilled partial record SRR that closes, and this is indicated by " 0b " of P sign in corresponding SRR entry (SRR#2 entry).It is because SRR#2 is conversation start SRR that S sign in the SRR#2 entry has " 1b " value, i.e. the initial SRR of session #2.

SRR#3 among Fig. 6 B is the unfilled empty SRR that closes, and this is indicated by " 0b " of P sign in the SRR#3 entry.It is because SRR#3 is not the initial SRR of session #2 that S sign in the SRR#3 entry has " 0b " value.

SRR#4 among Fig. 6 B is unfilled complete S RR, and this is indicated by " 0b " of P sign in the SRR#4 entry.It is because SRR#4 is not the initial SRR of session #2 that S sign in the SRR#4 entry has " 0b " value.

SRR#5 among Fig. 6 B is unfilled invisible SRR, and this is indicated by " 0b " of P sign in the SRR#5 entry.It is because SRR#5 is not initial/end SRR of session #3 that S sign in the SRR#5 entry has " 1b " value.

Under the situation of Fig. 6 B, all SRR indicate the nothing filling by " 0b " of P sign.Under the situation of conversation start SRR#1, #2 and #5, the value of their S sign is " 1b ".Open SRR only is SRR#5 (invisible SRR).Therefore, only there is SRR#5 to be recorded in " tabulation of open SRR " field 52 interior conducts " the first open SRR " of SRRI head 50.

With reference to figure 6C, give five continuous SRR SRR #1 to #5 respectively and this session comprises two complete session #1 and #2 and a null session #3.

SRR#2 among Fig. 6 C is the SRR that closes of band filling, and this is indicated by P sign " 1b " in corresponding SRR entry (SRR#2 entry).It is because SRR#2 is conversation start SRR that S sign in the SRR#2 entry has " 1b " value, i.e. the initial SRR of session #2.

SRR#3 among Fig. 6 C be band fill close sky SRR, this in the SRR#3 entry by " 1b " indication of P sign.It is because SRR#3 is not the initial SRR of session #2 that S sign in the SRR#3 entry has " 0b " value.

SRR#4 among Fig. 6 C is unfilled complete S RR, and this is indicated by " 0b " of P sign in the SRR#4 entry.It is because SRR#4 is not the initial SRR of session #2 that S sign in the SRR#4 entry has " 0b " value.

SRR#5 among Fig. 6 C is unfilled invisible SRR, and this is indicated by " 0b " of P sign in the SRR#5 entry.It is because SRR#5 is not the initial SRR of session #2 that S sign in the SRR#5 entry has " 1b " value

Under the situation of Fig. 6 C, three SRR#1, #4 and #5 are indicated not have by their " 0b " of P sign and fill.Two SRR#2 and #3 have indicated filling by their " 1b " of P sign.In conversation start SRR#2 and #3, their S sign is recorded as " 1b ".Be similar to the situation of Fig. 6 B equally, open SRR is SRR#5 (invisible SRR).Therefore, only there is SRR#5 to be recorded in " tabulation of open SRR " field 52 interior conducts " the first open SRR " of SRRI head 50.

Therefore, by the definition of " P sign " and " S sign " in the SRR mode field to the SRR entry in a second embodiment, just can use and fill the SRR that difference is closed.Can differentiate one session from another dissimilar and need not initial sum ending allocation exterior domain into session, this has just significantly improved the efficient of video disc recording/playback operation.

To the method for the SRRI of a kind of record and renewal indicating panel recording status be described according to the present invention subsequently.More specifically, the SRRI that can in SRR closes, fill specific data and use this filling SRR to have efficient recovery to lose.

But Fig. 7 A shows the initial blank disc that Zone Full all is in recording status.The reference position of this dish becomes NWA.In this state, dish only has a SRR.This is identical with invisible SRR shown in Fig. 2 A.Therefore, session is in the dish original state that wherein only has a null session.This is the situation of the blank disc that is not recorded as yet of SRRI wherein.

Fig. 7 B shows when at some part identifying recording layer of the blank disc of Fig. 7 A but this session closing state not as yet.Under this state, dish only has a SRR (SRR#1).This is identical with incomplete SRR shown in Fig. 2 B.Therefore, dish is in the state that an incomplete session is only arranged.

Fig. 7 C shows the process that writes down SRRI when dish is in Fig. 7 B state in the directorial area at this dish.For convenience of explanation, only show some part of whole different assemblies of dish structure shown in Figure 1 and SRRI structure.For example, though in each bunch, write down (SRRI+TDDS) or (TDFL+TDDS) as mentioned above, in the TDMA0 of Fig. 7 C, only show SRRI, and omitted TDFL and/or TDDS for simple consideration such as the TDMA of TDMA0.Only show " open SRR tabulation " field 52 and " tabulation of the SRR entry " field 30 in the SRRI different field shown in Fig. 1 in addition.

The dish recording status of Fig. 7 C is as the situation of an open SRR (SRR#1) is only arranged in all disk area among Fig. 7 B.Shown in Fig. 7 C, in as Fig. 7 B, do not close when forming imperfect SRR#1 under the situation of session, generate the SRRI#1 (60a) relevant and it is recorded in the TDMA0 with SRR#1.In SRRI#1 (60a), SRR number of open SRR#1 can be recorded in its " open SRR tabulation " field 52a.In " tabulation of SRR entry " field 30a of SRRI#1 (60a), only there be a SRR entry 35a relevant with SRR#1.SRR entry 35a (the perhaps SRR entry 35b-35p of subsequent discussion) can have the above-mentioned SRR entry structure of Fig. 5 A or 6A.

Fig. 7 D shows according to one embodiment of the invention, is recorded in the detailed structure of " open SRR tabulation " field of SRRI head.This field structure shown in Fig. 7 D all is suitable for the present invention's any " open SRR tabulation " field (such as field 52 and 52a-52f (subsequent discussion)).The information that is stored in this field is the position that is used to discern any open SRR.Following the use of this field will be described in more detail.

Open SRR record item No. is recorded in " open SRR tabulation " field of SRRI as the information about this open SRR entry position.That is to say, use the sum of the open SRR that given time allowed in this example to be the position that 16 " opening SRR number " discerns open SRR entry to the maximum.Distribute two bytes to be used to store 16 each of different open SRR number.

For executable operations on dish, the readable position of this dish when record/playback apparatus just must determine that CD is written into.And this can realize by obtain the NWA value from any open SRR.Therefore, record/playback apparatus need be understood the position of any open SRR that can determine to coil readable position on this dish.Yet, be open SRR or the information of closing SRR because there is not the specific SRR of Direct Recognition, so the invention provides " the open SRR tabulation " field that is positioned at the SRRI head and visit the position of this field to obtain any open SRR by SRR number.In case discerned open SRR number, just can visit the corresponding SRR entry among the SRRI, thereby obtain the definite position (for example by the start address in the visit SRR entry origing address field (OAF)) of open SRR.In this way, video disc recording/playback reproducer just can be read the information of open SRR entry more easily.

According to the present invention, having only its SRR number is that " open SRR tabulation " the interior SRR of field that is recorded in SRRI is considered to open SRR.Close SRR if open SRR becomes, just from " open SRR tabulation ", wipe or remove this SRR that is changed SRR number.Differently be applied to close a certain specific open SRR (for example in response to shutdown command), just from " open SRR tabulation " field of SRRI, remove SRR number of this SRR.Just show closing of corresponding SRR from " open SRR tabulation " so remove SRR number of this SRR the field.

Fig. 8 A shows the situation of carrying out the session shutdown command when dish is in Fig. 7 B state.Shown in Fig. 8 A, the session shutdown command is distinguished into the data recording that exists the SRR that independently closes and generates a new session.In other words, the complete recording areas among Fig. 7 B has just become the complete S RR#1 that constitutes complete session #1 successively.Subsequently, recording areas has not just become the invisible SRR#2 that constitutes null session #2 successively.

Fig. 8 B shows the recording process of the dish recording status that matches with Fig. 8 A plate-like attitude.Shown in Fig. 8 B, and then the SRRI#1 of precedence record (60a) writes down SRRI#2 (60b) in TDMA0.Because the dish recording status of Fig. 8 A is that an open SRR (SRR#2) and a situation of closing SRR (SRR#1) are only arranged in the whole disk area, so SRR number (SRR#2) opened accordingly in record in " open SRR tabulation " field 52b of SRRI#2 (60b).In addition, in " tabulation of SRR entry " field 30b of SRRI#2 (60b), record about the information of two SRR entries (SRR#1 and SRR#2) as SRR entry 35b and 35c.

In Fig. 8 B, show the SRR entry of closing with shade.Though not shown, should be appreciated that together with in TDMA0 to the record of SRRI#2 (60b), also can be recorded in the respective cluster (or record cell) of TDMA0 such as other management information of upgrading TDDS information.

Fig. 9 A shows two open SRR that are preserved for new record for the plate-like attitude from Fig. 8 A.Shown in Fig. 9 A, the open SRR of Bao Liuing becomes open empty SRR#2 and open empty SRR#3 recently, and they all have by the suitable NWA shown in the thick arrow.Remaining area becomes invisible (opening) SRR#4.Session comprises complete session #1 and becomes the session #2 of incomplete session from null session.

Fig. 9 B shows the recording process of the dish recording status relevant with Fig. 9 A plate-like attitude.Shown in Fig. 9 B, and then the SRRI#2 of precedence record (60b) writes down another SRRI#3 (60c) in TDMA0.Because the dish recording status of Fig. 9 A be exist three open SRR (SRR#2, #3, #4) and a situation of closing SRR (SRR#1), thus in " open SRR tabulation " field 52c of SRRI#3 (60c) record open accordingly SRR number (SRR#2, #3, #4).In addition, in " tabulation of SRR entry " field 30c of SRRI#3 (60c), record about the information of whole four SRR entries (SRR#1 to #4) respectively as SRR entry 35d to 35g.

In Fig. 9 B, show the SRR that closes with shade.Though not shown, should be appreciated that together with in TDMA0 to the record of SRRI#3 (60c), also can be recorded in the respective cluster (or record cell) of TDMA0 such as other management information of upgrading TDDS information.

Figure 10 A show under the plate-like attitude of Fig. 9 A to the first empty SRR (SRR#2) and in invisible SRR (SRR#4) situation of record data.The result is, the first empty SRR changes into open partial record SRR#2, and invisible SRR then changes into imperfect SRR#4, but open empty SRR#3 does not change.

Figure 10 B shows the recording process of the dish recording status relevant with Figure 10 A plate-like attitude.Shown in Figure 10 B, and then the SRRI#3 of precedence record (60c) writes down another SRRI#4 (60d) in TDMA0.Because the dish recording status of Figure 10 A be exist three open SRR (SRR#2, #3, #4) and a situation of closing SRR (SRR#1), thus in " open SRR tabulation " field 52d of SRRI#4 (60d) record open accordingly SRR number (SRR#2, #3, #4).In addition, in " tabulation of SRR entry " field 30d of SRRI#4 (60d), record about the information of whole four SRR entries (SRR#1 to #4) respectively as SRR entry 35h to 35k.

In Figure 10 B, show the SRR that closes with shade.Though not shown, should be appreciated that together with in TDMA0 to the record of SRRI#4 (60d), also can be recorded in the respective cluster (or record cell) of TDMA0 such as other management information of upgrading TDDS information.

The position of the number of SRR entry and open SRR is equal to the situation of Fig. 9 B in Figure 10 B.Yet because carried out record in specifying open SRR shown in Figure 10 A, the LRA information in the open SRR entry of carrying out this record changes.Therefore, extra readable NWA position also changes.

Figure 11 A shows the situation of carrying out the session shutdown command under the plate-like attitude of Figure 10 A, but closes its open SRR after the extra readable region of open SRR part is filled.In padding, can optionally fill all or part of extra readable area of open SRR as mentioned above.Can use empty data (for example zero) as mentioned above or specify real data (for example character code " CLSD ") to carry out this filling as padding data.That is to say that the padding among Figure 11 A is with identical together with the discussion of Fig. 3 D and 3E.

Shown in Figure 11 A, the session shutdown command makes existing data recorded area become independently complete session.And all SRR that are included in this complete session become the SRR that closes.For example, in response to the session shutdown command, fill the part (for example first bunch after the LRA) in each open SRR and close these SRR.In the case, be recorded in the last recording areas of the LRA information indication record actual user data in the SRR entry, and empty data division does not influence determining of LRA position.After carrying out shutdown command, this just causes forming successively closed portion record SRR#2, the empty SRR#3 that closes and the complete S RR#4 of the complete session #2 of new reservation.Remaining outer course SRR becomes invisible (opening) SRR#5 that forms null session #3 successively.

Figure 11 B shows the recording process of the dish recording status relevant with Figure 11 A plate-like attitude.Shown in Figure 11 B, and then the SRRI#4 of precedence record (60d) writes down another SRRI#5 (60e) in TDMA0.Because the dish recording status of Figure 11 A is to have only an open SRR (SRR#1) and four situations of closing SRR (SRR#1 to #4), so SRR number (SRR#5) opened accordingly in record in " open SRR tabulation " field 52e of SRRI#5 (60e).In addition, in " tabulation of SRR entry " field 30d of SRRI#5 (60e), record about the information of whole 5 SRR entries (SRR#1 to #5) respectively as SRR entry 35l to 35p.

In Figure 11 B, show the SRR that closes with shade.Though not shown, should be appreciated that together with in TDMA0 to the record of SRRI#5 (60e), also can be recorded in the respective cluster (or record cell) of TDMA0 such as other management information of upgrading TDDS information.

Filled under the situation of the SRR#2 of empty data and SRR#3 by shutdown command therein, just record has wherein write down the latest position of actual user data in the LRA of corresponding SRR entry field.

Similarly, if in the mode field of SRR entry, there is P sign as mentioned above, just may recognizes and close SRR accordingly and close by filling.If in the SRR entry, there is not the P sign,, promptly specify padding data to determine that corresponding SRR is the SRR that is filled by checking the NWA (after the LRA) that observes SRR locates whether to exist just by checking its LRA recording status afterwards.

By Fig. 7 A to Figure 11 B as seen, SRRI is the information of the current dish recording status of indication.Record/playback apparatus must detect the up-to-date SRRI (for example SRRI#5 in described example) that is lastly recorded in the management area when loading respective disc.Because only be that up-to-date SRRI just correctly indicates the final entry state of this dish, so just can detect the position of the SRR of additional records.

Yet, the accident power-off when the use dish or this adjustment debit bad time, just can't correctly read the up-to-date SRRI of dish.At this moment, just need use not damage SRRI up-to-date among the SRRI and rebuild final recording status.According to the present invention, in the time that SRR will be closed, in padding, fill SRR, even the up-to-date SRRI then on this dish still can use the final entry state of this filling information reconstruction dish when in damaged condition.By it, just can recover the up-to-date SRRI and the current record state of this dish.

Figure 12,13A and 13B show the recording method according to CD-WORM of the present invention.Even this method also can be recovered the up-to-date SRRI of this dish under the situation that up-to-date SRRI damages, and can use the final entry state that obtains from this up-to-date SRRI to come executive logging/playback.

When concluding that corresponding SRRI is defect area and recorded information when unreliable, just thinks that SRRI damages.If up-to-date SRRI damages, this just means the final entry state that can not obtain dish from up-to-date SRRI.But so just can't learn the record position of dish.In the worst case, dish itself just can't re-use.

The invention provides a kind of when up-to-date SRRI damages the method for the final entry state of correct recovery dish.More specifically, Figure 12 is according to one embodiment of present invention, shows to be used to recover CD-WORM (such as BD-WO) final entry state and the method for executive logging/playback operation on dish.Described dish comprises above-mentioned dish structure and SRRI structure.

Referring to Figure 12, if in optical recording/playback reproducer (device shown in Figure 14), be written into dish, just read directorial area (for example, TDMA0) in the record up-to-date SRRI.Just detect the SRRI that reads subsequently and whether damage (S10).

If up-to-date SRRI do not damage, then from up-to-date SRRI, obtain final quotation recording status (S21).Use up-to-date SRRI subsequently, but only carry out playback operation (S22) to extra recording areas executive logging and/or to recording areas.From up-to-date SRRI, obtain about these regional information.

On the other hand, damage, just determine not damage the up-to-date SRRI (S31) among the SRRI if step S10 determines up-to-date SRRI.Just read this up-to-date SRRI of damage (S32) subsequently.Can use the SRRI (S33) of the physical record recovering state damage of this up-to-date SRRI of damage and dish.Step S33 can be an optional step.Carry out playback operation (S34) to additional records district executive logging and/or to recording areas.From the up-to-date physical record state that does not damage SRRI and/or dish, determine about these regional information.After recording/playback step S34, just the recording status that record changes recently in directorial area is as new SRRI.

Figure 13 A and Figure 13 B show the example that recovers the step S33 of final entry state among Figure 12 when up-to-date SRRI (SRRI#5 in Figure 11 B example) damages.For convenience of explanation, will the SRRI recording method of Fig. 7 A to Figure 11 B be described as an example.

As shown in FIG. 13A, if SRRI is in normal condition, then SRRI#5 (60e) becomes the up-to-date SRRI of dish.But if SRRI#5 damages, then record/playback apparatus never damages and reads up-to-date SRRI among the SRRI.In this example, SRRI#4 (60d) is the up-to-date SRRI that does not damage among the SRRI#1 to #4.

Can be from indicate definite physical record state that is associated with the step 6 of Figure 11 A the SRRI#5 (60e) that is write as Figure 11 B.Yet because SRRI#5 (60e) damages, therefore the up-to-date SRR information that can be detected by record/playback apparatus is SRRI#4 (60d).But SRRI#4 not necessarily carries the final entry state of this dish, because be that SRRI#5 carries these information, so for the final entry state of recovery dish under the situation of not using SRRI#5, just need the relatively actual final entry state of SRRI#4 and dish.This can realize in following description.

Record/playback apparatus detects the open SRR position and relevant LRA information from SRRI#4.In the example of Figure 13 A, from " open SRR tabulation " field 52d of SRRI#4 (60d), determine to exist three open SRR#2, #3 and #4.By visiting, just can obtain LRA and use it for checking whether corresponding SRR is real open SRR subsequently from " tabulation of SRR entry " the field 30d of SRRI#4 (60d) and corresponding to these LRA fields of opening the SRR entry of SRR.In this regard, only check the open SRR of identification in the field 52d of SRRI#4 (60d).Do not verify the position of closing SRR of record.Close SRR in case open SRR becomes, close SRR and just can't become open SRR again.The result closes SRR by checking whether each open SRR becomes, and just can recover final SRR information.

Under the situation of SRR#2 and #3 identification, just check among SRR#2 and the #3 each is to determine whether record predetermined padding data (for example empty data) afterwards (identifying) LRA (the final entry state of reality) in entry LRA field shown in Figure 11 A as the open SRR the field 52d of SRRI#4 (60d) in.If detect filling, record/playback apparatus just determines that corresponding open SRR becomes the SRR that closes subsequently.

SRR#4 is being taken as be under the situation of the open SRR in the field 52d of SRRI#4, record/playback apparatus just checks that SRR#4 is to determine whether its LRA (actual final entry state) has padding data (for example empty data) afterwards in Figure 11 A.In the final quotation recording status of reality, can analyze this SRR#4 as open SRR.The zone afterwards, LRA position that can find SRR#4 equally is recordable, and promptly this zone is NWA.Subsequently in record/playback apparatus, the recording areas of just determining original SRR#4 be close SRR (new close SRR#4) but and the recording areas of only analyzing original SRR#4 as open SRR (new SRR#5).So just use above-mentioned analysis result to rebuild the content of impaired SRRI#5.In addition, but because be extra record position information (NWA) by record/playback apparatus executive logging operation information necessary, so just do not change and the old NWA position that is associated with new SRR#4, it is used that they just can be record/playback apparatus like this.

Figure 13 B shows the result of the up-to-date SRRI#5 that is recovered by above-mentioned Figure 13 A process.The final entry state of the realistic dish of this result.Therefore, record/playback apparatus writes down the up-to-date SRRI#5 (being as SRRI#6 (60f) at this moment) that selectivity is recovered once more in directorial area, but or only carries out record to extra posting field.SRRI#6 (60f) comprises " open SRR tabulation " field 52f of identification SRR#5 and has comprised separately " tabulation of SRR entry " field 30f corresponding to the SRR entry 35q to 35u of SRR#1 to #5.Even the SRR#5 that recovers be not recorded as under the situation of SRRI#6 equally, still from the NWA information of recovering executive logging and by be recorded to recover NWA the recording status that data changed record as new SRRI#6.

Figure 14 shows according to video disc recording/playback reproducer of the present invention.This device or other device or system that is suitable for can be used for realizing dish and/or SRRI structure and the method in this discussion as the present invention.

Referring to Figure 14, video disc recording/playback reproducer comprises and being used for to the video disc recording data with from the recording/playback unit 10 of optical disk playback data, and the controller 20 that is used for controlling recording/playback unit 10.All elements of record/playback apparatus all are that coupling is gone up in operation.Controller 20 transmits to recording/playback unit 10 and is used for the order that the special posting field to the SRR/ session on dish writes down or therefrom reproduces.Recording/playback unit 10 reproduces data according to the order of controller 20 to the dish record data or from dish.

Recording/playback unit 10 comprises interface unit 12, pickup unit 11, data processor 13, servo unit 14, storer 15 and microcomputer 16.Interface unit 12 and the external device communication such as controller 20.Pickup unit 11 is directly to the video disc recording data or from the optical disc replay data.The information reproduction that data processor 13 receives from pickup unit 11 recovers preferable information, and modulation is for the suitable information of CD, and the transmission signal.Servo unit 14 control pickup units 11 read from the signal of CD or with signal record in CD.Storer 15 temporary storaging datas and the various information that comprise aforesaid management information.The assembly of microcomputer 16 controlling recording/playback unit 10.Because record/playback apparatus shown in Figure 14 can optionally carry out padding, so deviser's design record/playback reproducer more freely.Recording/playback unit 10 can be stored specific data automatically in underfilling operation.

Industrial applicibility

Mainly can be divided into two parts according to video disc recording/back method of the present invention.The first, shown in the example of Fig. 4 to Fig. 6 C, determine that filling and the record in the SRR that selectivity is closed is used to discern the information (for example P sign) of whether carrying out filling.The second, shown in the example of Fig. 7 A to Figure 13 B, to determine whether in SRR, to carry out to fill efficient recovery SRRI is arranged by checking SRR.In other words, close whether have in the SRR that to fill be an optionally problem.Yet according to the present invention, the SRR that closes that band is filled recovers more favourable to data.

To describe in detail according to video disc recording/back method of the present invention now.At first, if CD is written into record/playback apparatus, be recorded in CD preset in the directorial area as the SRRI of up-to-date management information together with the head of SRRI and the SRR entry is read and blotter in the storer 15 of recording/playback unit 10.

Because up-to-date dish recording status is recorded among the SRRI, so make that by the SRRI header information open SRR is discernible.And whether the existence of filling also is discernible.The recording/playback that this can be used for coiling.

For example, because therefore the SRR state that microcomputer 16 can be from SRRI correctly exists in the detection dish can know recordable position (NWA) from detect open SRR.And the existence that also can check filling as mentioned above whether.When if SRR closes according to the shutdown command of controller 20, microcomputer 16 can be selected to have to close with filling or do not have with filling and close.Can not have yet and close SRR with filling in response to the particular command of controller 20.

When the SRR state when fill changing, just change and write down P sign in the corresponding SRR entry, make other record/playback apparatus can use this information.Above-mentioned function can be called as recording/playback unit 10 and " fill function automatically ".This function is advantageously because it can shorten the padding required time.According to the present invention, by defining the SRR type in every way and providing record SRR and SRRI method to design record/playback apparatus with expected performance.

To describe in detail now according to another kind of recording/playback method of the present invention.At first, if CD is written into record/playback apparatus, controller 20 control pickup units 11 read the up-to-date SRRI that is stored among the TDMA and determine whether this up-to-date SRRI damages.If up-to-date SRRI damages, just, never damage the up-to-date SRRI of recovery among the SRRI as described in Figure 12,13A and the 13B.Can recover this up-to-date SRRI by become the empty data of filling in the inspection dish when closing SRR at open SRR.

If up-to-date SRRI does not damage, then recording/playback unit 10 comes executive logging by detecting the position that additionally can write down open SRR.So if receive shutdown command in the slave controller 20, but filling is just carried out to the part or all of zone of remaining extra posting field among the open SRR in recording/playback unit 10, thereby closes this SRR.Subsequently, just write down the dish recording status that changes among the up-to-date SRRI in directorial area.Even any record/playback apparatus is written into corresponding CD once more and described up-to-date SRRI damages, also can detect the final entry state of this dish.

It should be appreciated by those skilled in the art and to make various modifications and change in the present invention.Therefore, the invention is intended to cover these modifications of the present invention and modification, as long as they are within the scope and full scope of equivalents thereof of claims.

Claims

1. a management has comprised the method for the once writing recording medium of one or more journal scopes, described recording medium has disc management area, when described recording medium will be closed, described disc management area was used for management information is stored in wherein, and described method comprises step:

2. the method for claim 1 is characterized in that, described recording step comprises:

Record is used for the conversation start information of each journal scope on described temporary disk (T-disk) directorial area, and described conversation start information indicates whether each journal scope is the initial of session.

3. the method for claim 1 is characterized in that, also comprises step:

The wherein said open ended sequential recording interval tabulation on the described temporary disk (T-disk) directorial area of record journal range information is the part of described journal range information.

4. method as claimed in claim 3 also comprises:

Record is recorded in up-to-date journal range information in the described temporary disk (T-disk) directorial area on described disc management area when closing described recording medium.

5. as claim 3 or 4 described methods, wherein said journal range information comprises the one or more entries that are used for one or more journal scopes, and each in wherein one or more entries comprises conversation start information, and whether the journal scope that described conversation start information indication is registered in each entry is the initial of session.

6. as any described method in the claim 1,3 and 4, it is characterized in that described predetermined number is 16.

7. device that is used to manage the once writing recording medium that has comprised one or more journal scopes, described recording medium has disc management area, when described recording medium will be closed, described disc management area was used for management information is stored in wherein, and described device comprises:

Disposing described microcomputer controls described pickup unit record open ended sequential recording interval and tabulates and will be closed up to described recording medium on the temporary disk (T-disk) directorial area, the sign of each open ended sequential recording interval in first session of described recording medium is carried in the tabulation of described open ended sequential recording interval, the number of the open ended sequential recording interval that is wherein allowed mostly is a predetermined number most

Disposing described microcomputer controls described device and closes described first session, wherein when described first session is closed, described microcomputer will be in described first session each open ended sequential recording interval in described first session the unwritten zone of last open ended sequential recording interval become the closing sequence recording interval;

Dispose described microcomputer and control described device after described first session is closed, produce second session in described recording medium, wherein said microcomputer becomes the unwritten zone of open ended sequential recording interval last in described first session opening entry scope of described second session; And

Dispose described microcomputer and control on the new temporary disk (T-disk) directorial area of tabulating of described pickup unit record open ended sequential recording interval, but but the new tabulation of described open ended sequential recording interval does not comprise the sign that becomes the recording interval in first session that does not have the closing sequence of writing position recording interval from the open ended sequential recording interval with writing position.

8. device as claimed in claim 7, wherein dispose described microcomputer and control described pickup unit is used for each journal scope with record conversation start information to described temporary disk (T-disk) directorial area, described conversation start information indicates whether each journal scope is the initial of session.

9. device as claimed in claim 7, wherein dispose described microcomputer and control described pickup unit record journal range information on described temporary disk (T-disk) directorial area, wherein said open ended sequential recording interval tabulation is the part of described journal range information.

10. device as claimed in claim 9 wherein disposes described microcomputer and controls the up-to-date journal range information that will be recorded in the described temporary disk (T-disk) directorial area when described pickup unit will be closed described recording medium and record on the described disc management area.

11. as claim 9 or 10 described devices, wherein said journal range information comprises the one or more entries that are used for one or more journal scopes, and each in wherein one or more entries comprises conversation start information, and whether the journal scope that described conversation start information indication is registered in each entry is the initial of session.

12. as any described device in the claim 7,9 and 10, wherein said predetermined number is 16.

13. device that is used to manage the recording medium that has comprised one or more journal scopes, described recording medium has disc management area, when described recording medium will be closed, described disc management area was used for management information is stored in wherein, and described device comprises:

Pickup unit, dispose described pickup unit with directly at described recording medium identifying recording layer or directly comprise the management information of open ended sequential recording interval tabulation or from the described management information that comprises the tabulation of open ended sequential recording interval of reproducing in the temporary control and education district from described recording medium reproducing data and at temporary control and education district record, described open ended sequential recording interval tabulation comprise be used for discerning each open ended sequential recording interval of first session number;

Dispose described microcomputer and control described first session that described device is closed described recording medium, wherein when described first session was closed, each the open ended sequential recording interval in described first session the unwritten zone of described microcomputer change last open ended sequential recording interval in described first session was the closing sequence recording interval;

Dispose described microcomputer and control the new administration information of new tabulation that described pickup unit record comprises the open ended sequential recording interval on the temporary disk (T-disk) directorial area, but but the new tabulation of described open ended sequential recording interval does not comprise the sign that becomes the recording interval in first session that does not have the closing sequence of writing position recording interval from the open ended sequential recording interval with writing position.

14. device as claimed in claim 13 wherein disposes described microcomputer and controls the up-to-date directorial area that will be recorded in the described temporary disk (T-disk) directorial area when described pickup unit will be closed described recording medium and record on the described disc management area.