CN100573696C

CN100573696C - Equipment in write-once disc recording and reproduction data

Info

Publication number: CN100573696C
Application number: CNB2005800047064A
Authority: CN
Inventors: 黄盛熙; 高祯完
Original assignee: Samsung Electronics Co Ltd
Current assignee: Samsung Electronics Co Ltd
Priority date: 2004-02-14
Filing date: 2005-02-07
Publication date: 2009-12-23
Anticipated expiration: 2025-02-07
Also published as: TWI316699B; MY146713A; CN1918654A; JP5047823B2; RU2369924C1; CN101059986A; HK1103468A1; KR20050081864A; SG150523A1; CN101059986B; HK1108209A1; TW200527392A; KR100584614B1; JP2008181647A

Abstract

A kind of at the recording method and the equipment of Write-once disc identifying recording layer and the Write-once disc that is used for this method and apparatus.Described Write-once disc comprises: a plurality of update area, the lastest imformation of recording scheduled type; At least one main visit information district (AIA) writes down main visit information (AI), the final updated district of AI indication record final updated information in described a plurality of update area; And at least one sub-AIA, write down sub-AI, the position of the final updated information that described sub-AI indication is write down in the final updated district.

Description

Equipment in write-once disc recording and reproduction data

Technical field

The present invention relates to a kind of Write-once disc, more particularly, use required recording of information method and the equipment of Write-once disc thereby relate to a kind of the visit more quickly at the Write-once disc identifying recording layer, and the Write-once disc that is used for said method and equipment.

Background technology

Can be with on the new information duplicate record rewritable disk, recorded information on described rewritable disk.Yet, when in the new information of write-once disc recording, owing to can not remove the information that can not duplicate record have write down, the therefore information that must distribute new position to write down in the position of recorded information with renewal.

Usually, only the information of final updated be significant.Therefore, finally to remember updated information in order reading, update area to be distributed to the data field, data recording and/or reproducer detect the information of final updated by the update area of searching record lastest imformation.When record bulk information in update area, need the plenty of time to detect the information of expectation.

By data recording and/or reproducer it is being carried out on the Write-once disc of defect management, the existence record is used to manage the district of the information of defective that generates and the recording status of indicating Write-once disc when using Write-once disc.Different with rewritable disk is, according to the characteristic of Write-once disc, because can not the duplicate record lastest imformation in the position that has the information that has write down when needing to upgrade defect management information, so must be in the location records lastest imformation of sky.Therefore, need relatively large update area.Usually, update area is distributed to Lead-In Area or leading-out zone.Yet sometimes, update area can be distributed to the data field increases more New count with the appointment according to the user.

When record in the update area of distributing to the data field uses the required final updated information of Write-once disc, and when giving the data field with the information distribution of indication update area and will indicate the information of the position of update area to be included in the final updated information, even the whole update area of Lead-In Area or leading-out zone is distributed in search, also can't detect the position of final updated information or record final updated information.

Even data recording and/or reproducer detect record final updated information in distributing to the update area of data field,, then also may need the plenty of time to search for the final updated information that in this update area, writes down if the size of update area is very big.

Disclosure of the Invention

Technical scheme

The invention provides a kind of Write-once disc that has with the visit information of predetermined method Error Correction of Coding and duplicate record thereon, described visit information allows to reduce and reads the access time of using the required lastest imformation of Write-once disc.

The present invention also provides a kind of data recording equipment and method, by this equipment and method, can reduce and read the access time of using the required lastest imformation of Write-once disc.

Others of the present invention and/or advantage will partly be set forth in the following description, and will partly become clear from describe and maybe can be understood by practice of the present invention.

Beneficial effect

According to the embodiment of the invention, can reduce the access time of reading the information of using the required predetermined kind of Write-once disc.Specifically, when existence was used to write a plurality of update area of using the required lastest imformation of Write-once disc, recording unit or reproducer can be fast and are easily determined the update area of record final updated information in described a plurality of update area.In addition, when record access information, according to predetermined error correction format visit information is carried out Error Correction of Coding, duplicate record is by the visit information of Error Correction of Coding in a recording unit block.Therefore, even on the recording unit block of duplicate record visit information, generate the defective that causes owing to cut, also can improve the probability that successfully reproduces visit information greatly.

Description of drawings

By below in conjunction with the description of accompanying drawing to embodiment, above-mentioned and/or other aspects of the present invention and advantage will become clear and easier to understand, wherein:

Figure 1A and 1B are the structures according to the Write-once disc of the embodiment of the invention;

Fig. 2 is the detailed structure according to the Write-once disc with single-recordng-layer of the embodiment of the invention;

Fig. 3 A and 3B are the detailed structure according to the Write-once disc with double record layer of the embodiment of the invention;

Fig. 4 A and 4B are the detailed structure that has the Write-once disc of double record layer according to another embodiment of the present invention;

Fig. 5 A and 5B illustrate the processing at user data area and spare area record data according to the embodiment of the invention;

Fig. 6 is the data structure according to the temporary disk (T-disk) management information of the embodiment of the invention;

Fig. 7 is the data structure that is divided into the temporary disk (T-disk) directorial area (TDMA) in sub-visit information district (AIA) and a plurality of subareas;

Fig. 8 illustrates according to the main AIA of the embodiment of the invention and sub-AIA;

Fig. 9 A and 9B illustrate the sub-AIA according to the embodiment of the invention;

Figure 10 is the data structure according to the visit information of the embodiment of the invention;

Figure 11 is according to the record of the embodiment of the invention and/or the block diagram of reproducer.

Optimal mode

According to an aspect of the present invention, provide a kind of Write-once disc, comprising: a plurality of update area, record is pre-Decide the lastest imformation of type; At least one main visit information district (AIA) records main visit information (AI), The final updated district of described main visit information indication record final updated information in described a plurality of update area; And at least one sub-AIA, record sub-AI, described sub-AI indication is recorded in the final updated district The position of whole lastest imformation; Wherein, repeat note in the whole record block in described at least one main AIA Record main AI.

According to a further aspect of the invention, provide a kind of Write-once disc, comprising: a plurality of update area, record The lastest imformation of predefined type; At least one AIA, record AI, described AI indication is described more a plurality of The final updated district of record final updated information in the newly developed area; Wherein, AI comprises the position of described a plurality of update area Putting first flag information and the indication in information, indication final updated district records in the final updated district Second flag information of the position of whole lastest imformation.

According to a further aspect of the invention, provide a kind of Write-once disc, comprising: with predetermined using in order A plurality of update area, the lastest imformation of recording scheduled type; And at least one AIA, take record block as Unit record comprises the AI of the positional information of described a plurality of update area; Wherein, according to the record that records AI The final updated district of the quantity indication of piece record final updated information in described a plurality of update area; And Duplicate record AI in the whole record block of AIA.

According to a further aspect of the invention, provide a kind of data recording equipment, comprising: write/reading unit, Writing information or from the Write-once disc reading information on Write-once disc; And controller, control write/ Recording scheduled type is final among in distributing to a plurality of update area of Write-once disc one of reading unit Lastest imformation, record indication record final updated in distributing at least one main AIA of Write-once disc The main AI in the final updated district of information, and in distributing at least one sub-AIA of Write-once disc record The sub-AI of the position of the final updated information that indication is recorded in the final updated district, wherein, controller control Write/repeat to write in the whole record block of reading unit in main AIA and become owner of AI.

According to a further aspect of the invention, provide a kind of data recording equipment, comprising: write/reading unit, Writing information or from the Write-once disc reading information on Write-once disc; And controller, control write/ Recording scheduled type is final among in distributing to a plurality of update area of Write-once disc one of reading unit Lastest imformation, and final updated is recorded in the record indication in distributing at least one AIA of Write-once disc The AI in the final updated district of information, wherein, positional information, indication that AI comprises described a plurality of update area are The position of the final updated information that first flag information of whole update area and indication are recorded in the final updated district Second flag information, controller control writes/repeat to write in the whole record block of reading unit in AIA Enter AI.

According to a further aspect of the invention, provide a kind of have a plurality of update area of using by predefined procedure with And the equipment of the Write-once disc identifying recording layer of at least one AIA, this equipment comprises: write/read list Unit, writing information or from the Write-once disc reading information on Write-once disc; And controller, control Write/in described a plurality of update area one of reading unit in the final updated information of recording scheduled type, And in AIA, record the AI of the positional information that comprises described a plurality of update area take record block as unit, and make Record final updated information is in described a plurality of update area with the quantity indication of the record block of record AI Whole update area, wherein, controller control writes/and reading unit repeats to write in the whole record block of AIA AI.

According to a further aspect of the invention, provide a kind of method at the Write-once disc identifying recording layer, this method comprises: the final updated information of recording scheduled type in one in distributing to a plurality of update area of Write-once disc; The main AI in the final updated district of record indication record final updated information in distributing at least one main AIA of Write-once disc; And the sub-AI of the position of the final updated information that the record indication is write down in the final updated district in distributing at least one sub-AIA of Write-once disc; Wherein, duplicate record master AI in the whole record block in described at least one main AIA.

According to a further aspect of the invention, provide a kind of method at the Write-once disc identifying recording layer, this method comprises: the final updated information of recording scheduled type in one in distributing to a plurality of update area of Write-once disc; The AI in the final updated district of record indication record final updated information in distributing at least one AIA of Write-once disc; Wherein, AI comprises second flag information of the position of the positional information of described a plurality of update area, first flag information in indication final updated district and the final updated information that indication is write down, duplicate record AI in the whole record block of AIA Shen in the final updated district.

According to a further aspect of the invention, a kind of method at the Write-once disc identifying recording layer with a plurality of update area of using with predefined procedure and at least one AIA is provided, and this method comprises: the lastest imformation of recording scheduled type in described a plurality of update area; And, in described a plurality of update area, write down the final updated district of final updated information according to the quantity indication of the record block that writes down AI by with record block being unit writes down the positional information that comprises described a plurality of update area in AIA AI; Wherein, duplicate record AI in the whole record block of AIA.

Embodiment

Now, describe embodiments of the invention in detail, its example represents that in the accompanying drawings wherein, identical label is represented identical parts all the time.Below by embodiment being described with reference to the drawings to explain the present invention.

Figure 1A and 1B are the structures according to the Write-once disc of the embodiment of the invention.Figure 1A is the structure with Write-once disc of single-recordng-layer, and Figure 1B is the structure with Write-once disc of double record layer.

The Write-once disc with single-recordng-layer among Figure 1A comprises Lead-In Area, data field and the leading-out zone of arranging from the inner periphery to the excircle.

The first recording layer L0 of the Write-once disc with double record layer among Figure 1B and each layer of the second recording layer L1 comprise Lead-In Area, data field and the leading-out zone of arranging from the inner periphery to the excircle.

Fig. 2 is the detailed structure according to the Write-once disc with single-recordng-layer of the embodiment of the invention.With reference to Fig. 2, Lead-In Area comprises first disc management area (DMA1), second disc management area (DMA2), the first temporary disk (T-disk) directorial area (TDMA1), visit information district (AIA) and record condition test section.Leading-out zone comprises the 3rd disc management area (DMA3) and the 4th disc management area (DMA4).In addition, leading-out zone can also comprise at least one among temporary defect management area, record condition test section and the AIA.That is each at least one that, at least one of Lead-In Area and leading-out zone, can have AIA, DMA, TDMA and record condition test section.

AIA is the zone of record access information, and this visit information indication record record and/or reproducer should obtain the position with the lastest imformation of for example defect management information that uses Write-once disc.Visit information and AIA will be described after a while.

The data field comprises first spare area, user data area, the second temporary disk (T-disk) directorial area (TDMA2) and second spare area.

Distribute the TDMA1 that is included in the Lead-In Area according to present embodiment during manufacture based on the specification of Write-once disc.Yet by user's selection, first spare area, TDMA2 and second spare area that are included in the data field are assigned to the data field in the initialization process of Write-once disc.

Fig. 3 A and 3B are the detailed structure according to the Write-once disc with double record layer of the embodiment of the invention.Fig. 3 A is the structure of the first recording layer L0, and Fig. 3 B is the structure of the second recording layer L1.The structure of the first recording layer L0 shown in Fig. 3 A is identical with the structure of the Write-once disc with single-recordng-layer shown in Figure 2.The structure of the second recording layer L1 shown in Fig. 3 B and the similar of the first recording layer L0.Yet in the structure of the second recording layer L1, AIA is not assigned to second inner area, and two TDMA are assigned to second data field.

This Write-once disc with double record layer comprises five TDMA, i.e. TDMA1 to TDMA5.The position of TDMA1 and TDMA2 and size are known for recording unit and/or reproducer.Yet, when the initialization of execution dish when using this Write-once disc with double record layer, by the user or by record and/or reproducer TDMA3, TDMA4 and TDMA5 are assigned to the data field.

Fig. 4 A and 4B are the detailed structure that has the Write-once disc of double record layer according to another embodiment of the present invention.Fig. 4 A is the structure of the first recording layer L0, and Fig. 4 B is the structure of the second recording layer L1.TDMA1, TDMA2 and TDMA5 are assigned to the Write-once disc with double record layer shown in Fig. 4 A and 4B.That is, when the initialization of execution dish when using this Write-once disc with double record layer, except known TDMA1 and TDMA2, only TDMA5 is assigned to second data field by the user or by record and/or reproducer.

Now description is assigned to district and the processing of record data in described district of for example TDMA of Write-once disc.

TDMA is a kind of like this district, and this district was used for before the end of Write-once disc, the temporary disk (T-disk) management structure (TDMS) that record is used to manage Write-once disc.The end of Write-once disc is the operation that prevents that Write-once disc from being write down once more.When the selection data by the user can not be recorded on the Write-once disc again, perhaps when data can not additionally be recorded on the Write-once disc, Write-once disc finished.

TDMS comprises temporary disk (T-disk) defect list (TDFL), temporary disk (T-disk) definition structure (TDDS) and bit mapping (SBM) at interval.TDFL comprises that indication has produced the district of defective and the information that the district is replaced in indication.The TDDS that is used to manage TDFL comprises the position indicator pointer of the position of the position indicator pointer of the position of indication record TDFL, indication record SBM, position and the position of the information of size and the TDMA that indication is assigned to the data field and the information of size of spare area that indication is assigned to the data field.By different bit values is assigned to bunch be records data in units bunch in and do not have record data bunch in, SBM uses bit to shine upon the data-recording status that shows Write-once disc, described bunch is data recording unit.

When Write-once disc is loaded into record and/or reproducer, must read and reproduce the TDMS of final updated from Write-once disc fast, be the TDDS of final updated specifically, in this equipment, to use Write-once disc.

Usually, when Write-once disc was loaded into recording unit and/or reproducer, recording unit and/or reproducer determined how to manage Write-once disc by reading information from Lead-In Area and/or leading-out zone, and how to write down or reproduce data.If the quantity of information in Lead-In Area and/or leading-out zone is very big, then after the Write-once disc of packing into, spends more time and be used for preparing record or reproduction.Therefore, the notion of TDMS is used, and is recorded in the TDMA at the TDMS that data is recorded in Write-once disc or produce when Write-once disc reproduces data, and TDMA separates with defect management, and is assigned to Lead-In Area and/or leading-out zone.

When Write-once disc finishes, since by only will upgrade and write down several times TDFL and the last significant information stores among the TDDS in DMA, allow to write down and/or reproducer only reads significant information thereby to use the message reference of Write-once disc fast be possible from defect management, therefore be recorded in the TDMS among the TDMA, promptly TDFL and TDDS finally are recorded among the DMA.

Fig. 5 A and 5B illustrate and data are recorded in processing in user data area and the spare area according to the embodiment of the invention.

Fig. 5 A represents user data area, and Fig. 5 B represents the spare area.The method that records the user data in user data area comprises continuous recording pattern and recorded at random pattern.With continuous recording mode continuous and user data sequentially, with recorded at random pattern user data randomly.The zone is 1. to the unit of 7. indicating executive logging checking afterwards therein.

1. recording unit writes the zone with user data, and the checking user data normally write the zone 1. still the zone 1. in the generation defective.If find the part that produces defective, then this part is designated as defect area, i.e. defective #1.In addition, the recording unit user data that will write in defective #1 is overwritten in the spare area.The user data that has write among the defective #1 is overwritten in the part that is called as the spare area of replacing #1.2. recording unit writes the zone with user data, and the checking user data normally write the zone 2. still the zone 2. in the generation defective.If find the part that produces defective, then this part is designated as defect area, i.e. defective #2.Equally, 2. generation replaces #2 accordingly with defective.In addition, in the zone 3., produce defective #3 and replace #3.Owing to do not find the part that produces defective in the zone in 4., therefore in this zone, do not have defect area.

If after user data is written into and verifies, prediction recording operation #1 finishes, promptly, if the user presses ejector button, if perhaps distribute the record of the user data carry out recording operation to finish, then recording unit will with write TDMA as TDFL#1 as the information that 1. defective #1, the defective #2 of the defect area of generation and defective #3 are relevant in 4. in the zone.In addition, the management structure of management TDFL#1 is written into TDMA as TDDS#1.Recording operation is the work unit that determines according to the writing task of user's purpose or expectation.In the present embodiment, recording operation indication is loaded into from Write-once disc, and the writing task of predetermined information is when being performed, to when the time period of Write-once disc when recording unit unloads.

When Write-once disc was packed into once more, recording operation #2 began, and the record condition in the record condition test section is tested, writes user data based on test result.That is, in

recording operation #

2,5. extremely 7. user data is written into the zone in the mode identical with recording operation #1, and produces defective #4, defective #5, replaces #4 and replace #5.When recording operation #2 finished, the information that recording unit will be referred to defective #4 and defective #5 write TDMA as TDFL#2.In addition, the management structure that is used to manage TDFL#2 is written into TDMA as TDDS#2.

Shown in Fig. 2,3A, 3B, 4A and 4B, when a plurality of TDMA and spare area are assigned to Write-once disc, press predefined procedure and use TDMA and spare area.For example, writing the path when the data of using in the Write-once disc with double record layer shown in Fig. 3 A and 3B is the backlight path, first outside area that is data from first inner area of the first recording layer L0 to the first recording layer L0, and during the path that second outside area from second inner area of the second recording layer L1 to the second recording layer L1 is recorded, the data from the opening entry spare area, first spare area of the first recording layer L0.When first spare area was full, second spare area, the 3rd spare area and the 4th spare area were used in proper order by this.

Equally, from the TDMA1 opening entry TDMS of the first recording layer L0.When TDMA1 was full, the TDMS of renewal was recorded among the TDMA2 of second inner area that is assigned to the second recording layer L1.When TDMA2 was full, the TDMS of new renewal was recorded among the TDMA3 of first data field that is assigned to the first recording layer L0.In the present embodiment, TDMA1 and the TDMA2 that is assigned to the inner area of recording layer is necessary for Write-once disc.Yet the TDMA that is assigned to the data field can distribute by user's selection, also can not be assigned with by user's selection.Therefore, the TDMA from the inner area that is assigned to recording layer begins journal TDMS.When the TDMA of the inner area that is assigned to recording layer expired, the TDMA that is assigned to the data field was used.

Be written into the TDMA that is assigned to the data field as the TDMS of final updated, Write-once disc is removed, and when this Write-once disc was reloaded record and/or reproducer, record and/or reproducer must obtain the TDMS of final updated to use this Write-once disc.Yet TDMS is recorded among the TDMA that is assigned to the data field, and is included in TDDS among this TDMS up to disc drive accesses, and record and/or reproducer just can identify TDMS and be recorded in the fact among the TDMA that is assigned to the data field.In addition, even the TDMS that record and/or reproducer identify final updated is recorded in the fact among the TDMA that is assigned to the data field, if the size of this TDMA is very big, the TDMS of the final updated of time searching record in this TDMA that also may overspending then.

In order to address this problem, three embodiment are proposed in the present invention now.In these three embodiment, for example TDMS is write down in visit information (AI) indication, is the lastest imformation of TDDS specifically, the position.In addition, when the lastest imformation indication was loaded in record and/or the reproducer when Write-once disc, at initialization cycle, record and/or reproducer should be discerned to use the information of Write-once disc.In addition, the district of record lastest imformation is called as update area.In these three embodiment, lastest imformation is TDDS, and update area is TDMA.

I. first embodiment

In the present embodiment, at least one the main AIA that is used to write down main AI is assigned to the Lead-In Area or the inner area of Write-once disc, and sub-AIA is assigned to TDMA.

When packing Write-once disc into, record and/or reproducer at first obtain main AI by visiting main AIA.Record and/or reproducer obtain sub-AI by the sub-AIA that visits this TDMA subsequently from the TDMA that main AI identifies the TDDS of record final updated.Because record and/or reproducer can be recorded in the position the TDMA from the TDDS that sub-AI identifies final updated, therefore the required time of TDDS of search final updated can be reduced in TDMA.

According to present embodiment, the AIA that is assigned to the Write-once disc shown in Fig. 2,3A and the 4A is main AIA.If because the size of main AIA is bigger, perhaps a plurality of main AIA are assigned with, then obtain the main AI cost longer time, therefore preferred, but not necessarily, by minimize the main AI amount that is recorded among the main AIA and main AI more New count limit the size of main AIA.In order to minimize more New count of main AI, when the TDMA of the final TDDS of record was changed, main AI was recorded in the recording unit block of main AIA.

Fig. 6 is the data structure according to the TDDS of first embodiment of the invention.In the present embodiment, do not define the data structure of independent main AI, and TDDS is used as main AI.As mentioned above, TDDS comprises the positional information of the TDMA that is assigned to Write-once disc.Shown in Fig. 3 A and 3B, when TDMA1 to TDMA5 was assigned to Write-once disc, TDDS comprised the positional information of TDMA1 to TDMA5.

In the present embodiment, record and/or the reproducer quantity that can write down the recording unit block of TDDS from main AIA identifies the TDMA that writes down final TDDS.Describe TDMA1 to TDMA5 now in detail and be assigned to Write-once disc, and situation about being used with the order of TDMA1, TDMA2, TDMA3, TDMA4 and TDMA5.If main AI, promptly TDDS is not recorded among the main AIA, and then record and/or reproducer identify final TDDS and be recorded in a TDMA, promptly among the TDMA1.

If TDDS only is recorded among first of main AIA, then record and/or reproducer identify final TDDS and are recorded in the 2nd TDMA, promptly among the TDMA2.If TDDS is recorded in during first and second of main AIA determines, then record and/or reproducer identify final TDDS and are recorded in the 3rd TDMA, promptly among the TDMA3.Equally, if TDDS is recorded among first to the 3rd of main AIA, record and/or reproducer identify final TDDS and are recorded in the 4th TDMA, promptly among the TDMA4.If TDDS is recorded among first to fourth of main AIA, then record and/or reproducer identify final TDDS and are recorded in the 5th TDMA, promptly among the TDMA5.

As mentioned above, record and/or reproducer identify the TDMA of the final TDDS of record from the quantity of the recording unit block of record TDDS among main AIA, and reproduce the TDDS of final entry in main AIA.Therefore, record and/or reproducer can identify the positional information of TDMA from TDDS.

According to present embodiment, the size of main AIA depends on the quantity of the TDMA that is assigned to Write-once disc.That is, if N TDMA is present in the Write-once disc, then main AIA comprises at least (N-1) individual recording unit block.

Preferred but dispensable, the TDDS that is recorded among the main AIA as main AI is repeatedly recorded in the record block.If the size of TDDS equals the size of a sector, i.e. 2K byte, and if the size of recording unit block be the 64K byte, then TDDS can be in a record block duplicate record 32 times.Be that the error correction format that the unit carries out error correction is disclosed in U.S. Pat 6,367 with the sector, in 049.According to U.S. Pat 6,367, disclosed error correction format in 049, if a TDDS is repeated to write down 32 times in a record cell of 64K byte-sized is determined, the possibility of then successfully reproducing TDDS can be increased greatly.That is, even at TDDS, be that AI is repeated to write down on 32 times the recording unit block because the mistake that cut causes produces, if the error correction of at least one TDDS among the TDDS of 32 repetitions is possible, then record and/or reproducer also can obtain AI.

Now with descriptor AIA and sub-AI.Divide gamete AIA from first BOB(beginning of block) of each TDMA, and the size of sub-AIA depends on what subareas the TDMA that comprises sub-AIA is divided into.

Fig. 7 is the data structure that is divided into the TDMA in sub-AIA and a plurality of subareas.Identical with main AIA, TDDS is used as sub-AI, and record and/or reproducer write down the quantity of the recording unit block of TDDS and discern the subarea of writing down final TDDS among the TDMA from sub-AIA.

As being recorded at main AI in the situation among the main AIA, the TDDS that is recorded as sub-AI can be repeatedly recorded in the recording unit block.

As shown in Figure 7, TDMA is divided into first to the M TDMA, and when the subarea is used in order with the direction from the first sub-TDMA to the sub-TDMA of M, if TDDS is not recorded among the sub-AIA, then record and/or reproducer identify final TDDS and are recorded in the first sub-TDMA, among the promptly sub-TDMA1.

If TDDS only is recorded among first of sub-AIA, then record and/or reproducer identify final TDDS and are recorded in the second sub-TDMA, among the promptly sub-TDMA2.If TDDS is recorded among first and second of sub-AIA, then record and/or reproducer identify final TDDS and are recorded in the 3rd sub-TDMA, among the promptly sub-TDMA3.According to present embodiment, the size that is assigned to the sub-AIA of each TDMA depends on the quantity in the subarea that is assigned to each TDMA.That is, if M subarea is present among the TDMA, then sub-AIA should comprise at least (M-1) individual recording unit block.

Fig. 8 illustrates according to the main AIA of the embodiment of the invention and sub-AIA.Shown in Fig. 4 A and 4B, be a kind of like this dish according to the Write-once disc of present embodiment, in this dish, when carrying out initialization when using this dish, only TDMA5 is assigned to the data field.Main AIA comprises 4 recording unit block.In the present embodiment, TDMA5 comprises 35,000 pieces, and is divided into a plurality of unit (except a unit that only comprises 3,000 pieces) of 4,000 pieces.That is, TDMA5 comprises 9 subareas.Therefore, as mentioned above, sub-AIA comprises 8 recording unit block.

When Write-once disc was initialised, perhaps when TDMA1 was used, main AI was not recorded among the main AIA.If writing down the position change of final TDDS is TDMA2, then record and/or reproducer indicate final TDDS to be recorded among the TDMA2 by TDDS being recorded among first of main AIA.

If writing down the position change of final TDDS is TDMA5, then record and/or reproducer are by indicating final TDDS to be recorded in first subarea of TDMA5 among second, third and the 4th that TDDS are recorded in main AIA.

Fig. 9 A and 9B illustrate sub-according to another embodiment of the present invention AIA.Shown in Fig. 3 A and 3B, be a kind of like this dish according to the Write-once disc of present embodiment, in this dish, when carrying out initialization when using this dish, TDMA3, TDMA4 and TDMA5 are assigned to the data field.Therefore, as mentioned above, because 5 TDMA are assigned with, therefore, main AIA comprises 4 recording unit block.In the present embodiment, each of TDMA3 and TDMA4 comprises 16,000 pieces, and as shown in Figure 8, TDMA5 comprises that 35,000 are determined.

Fig. 9 A illustrates the data structure of TDMA3, and Fig. 9 B illustrates the data structure of TDMA4.TDMA3 comprises 4 subareas.Therefore, the sub-AIA that is included among the TDMA3 comprises 3 recording unit block.Because TDMA4 is identical with TDMA3, the sub-AIA that then is included among the TDMA4 also comprises 3 recording unit block.

TDMA5 is divided into a plurality of unit (except only comprising a unit of 3,000 recording unit block) of 4,000 recording unit block, and comprises 9 subareas.Therefore, as mentioned above, the sub-AIA that is included among the TDMA5 comprises 8 recording unit block.

As mentioned above, according to first embodiment, record and/or reproducer can come the position of the final TDDS of Visitor Logs quickly by main AI being recorded in main AIA and sub-AI being recorded in sub-AIA.

The operation from the position of main AI and the final TDDS of sub-AI Visitor Logs of record and/or reproducer will be described now in further detail.

According to first embodiment, when the Write-once disc of main AI of record and sub-AI was packed record and/or reproducer into, record and/or reproducer were visited main AIA.If information is not recorded among the main AIA, then record and/or reproducer determine that final TDDS is recorded among the TDMA1, and perhaps Write-once disc is a blank disc, and visit TDMA1.If there are not data to be recorded among the TDMA1, then to identify Write-once disc be blank disc for record and/or reproducer, and the beginning initialization is to use this Write-once disc.If data are recorded among the TDMA1, then record and/or reproducer obtain final TDDS from TDMA1.

If data are recorded among the main AIA, then record and/or reproducer reproduce TDDS by the piece of visit final entry data.Record and/or reproducer identify the piece which piece is the final entry data, and identify the TDMA of the final TDDS of record.In addition, record and/or reproducer can identify the size of the TDMA of the final TDDS of record from the TDDS that reproduces, and identify sub-AIA from size information and whether be assigned to TDMA.And AIA is assigned to TDMA as fruit, and then record and/or reproducer can identify the size of sub-AIA.Be not assigned to the TDMA that writes down final TDDS as fruit AIA, then record and/or reproducer are searched for final TDDS from TDMA.

Yet, being assigned to the TDMA that writes down final TDDS as fruit AIA, record and/or reproducer are visited sub-AIA, and which piece recognition data is recorded to always, and identifies the subarea of the TDMA of the final TDDS of record, and final TDDS is recorded among this TDMA.

II. second embodiment

Different with first embodiment, in a second embodiment, sub-AIA is not assigned with, but at least one AIA that is used to write down AI is assigned to the Lead-In Area or the inner area of Write-once disc.

Figure 10 is the data structure of the visit information (AI) according to the embodiment of the invention.The data structure of the AI shown in Figure 10 data structure with TDDS basically is identical.Yet the sign of the TDMA of the final TDDS of indication record also is included among the TDDS.

At present embodiment, this sign comprises: first flag information, the TDMA of the final TDDS of indication record; With second flag information, indicate final TDDS to be recorded in which part of the TDMA that indicates by first flag information.

First flag information comprises 4 bits, i.e. b4 to b7.For example, can define like this: when b4 to b7 is ' 0000b ', final TDDS is recorded among the TDMA1, and when b4 to b7 was ' 0001b ', final TDDS was recorded among the TDMA2, when b4 to b7 is ' 0010b ', final TDDS is recorded among the TDMA3, and when b4 to b7 was ' 0100b ', final TDDS was recorded among the TDMA4, when b4 to b7 was ' 1000b ', final TDDS was recorded among the TDMA5.

Second flag information comprises 4 bits, i.e. b0 to b3.To illustrate now in first flag information indication and be divided into second flag information under the situation of TDMA5 in 5 subareas.Can define like this: when b0 to b3 is ' 0000b ', final TDDS is recorded in first subarea, when b0 to b3 is ' 0001b ', final TDDS is recorded in second subarea, and when b0 to b3 was ' 0010b ', final TDDS was recorded in the 3rd subarea, when b0 to b3 is ' 0100b ', final TDDS is recorded in the 4th subarea, and when b0 to b3 was ' 1000b ', final TDDS was recorded in the 5th subarea.

When being recorded, in order to increase the possibility of successfully reproducing TDDS, preferably but not necessarily, TDDS is repeatedly recorded in the record block as the TDDS of AI.

III. the 3rd embodiment

Present embodiment is similar to the first above-mentioned embodiment.Yet different with first embodiment is in the present embodiment, not write down sub-AI in Write-once disc.Therefore, in the present embodiment, sub-AIA is not distributed to TDMA, respectively main AI among first embodiment and main AIA are expressed as AI and AIA.

Pack into and in the data field, write down TDDS among user data and in a plurality of TDMA one according to the record of the Write-once disc of present embodiment and/or reproducer.If cause owing to TDMA is full can not the renewal that record is new in the TDMA of the previous TDDS of record TDDS, then based on the TDDS of the renewal that record is new among the order of using in described a plurality of TDMA.In addition, in the record block of AIA, the TDDS of new renewal is recorded as AI.

Pack into according to the reproducer visit AIA of the Write-once disc of present embodiment, and in described a plurality of TDMA, determine the final TDMA of record final updated TDDS based on the quantity of the record block of record AI.Thereafter, reproducer obtains the AI of final updated from the record block of final entry among final TDMA.Reproducer obtains the positional information of the final TDMA of record final updated TDDS from the AI of final updated.At last, reproducer obtains the TDDS of final updated from final TDMA.Owing to only under the situation that the TDMA of the TDDS that upgrades such as record changes, in AIA, write down the TDDS that is recorded as the AI among the AIA, so this TDDS can be different from the TDDS of final updated.

In the above-described embodiments, when record is used as the TDDS of AI, preferably, but not necessarily, duplicate record TDDS in a record block.If the size of TDDS equals the size (2K byte) of a sector, and if the size of recording unit block be the 64K byte, then can be in a record block TDDS of duplicate record 32 times.The 6th, 367, disclosing in No. 049 United States Patent (USP) to be the error correction format that the unit carries out error correction with the sector.If according to the 6th, 367, disclosed error correction format TDDS of duplicate record 32 times in a recording unit block of 64K byte-sized then can increase the probability that successfully reproduces TDDS greatly in No. 049 United States Patent (USP).

Figure 11 is according to the data recording of the embodiment of the invention and/or the block diagram of reproducer.With reference to Figure 11, data recording and/or reproducer comprise and writing/reading unit 1, controller 2 and storer 3.Under the control of controller 2, write/reading unit 1 writes data on Write-once disc 100, and the data of reading and recording on Write-once disc 100.Write-once disc 100 is the Write-once discs according to first embodiment or second embodiment.

Controller 2 control writes/and reading unit 1 writes on Write-once disc 100 according to main AI of the present invention, sub-AI or AI.

Controller 2 be according to can being that the error correction format that the unit carries out error correction is carried out Error Correction of Coding to the TDDS with decide AI, sub-AI or AI with the sector, and control writes/TDDS of reading unit 1 duplicate record Error Correction of Coding in recording unit block.The 6th, 367, disclosing in No. 049 United States Patent (USP) to be the error correction format that the unit carries out error correction with the sector.If the size of TDDS equals the size (2K byte) of a sector, and if the size of recording unit block be the 64K byte, then can be in a record block TDDS of duplicate record 32 times.

Those skilled in the art will understand the operation of record and reproducer and reproducer easily from the description of above-mentioned first embodiment and second embodiment.

Though described and shown some embodiments of the present invention, but it will be understood by those skilled in the art that, without departing from the principles and spirit of the present invention, can change this embodiment, scope of the present invention is by claims and equivalent definition thereof.

Claims

1, a kind of recording unit at the Write-once disc identifying recording layer, wherein, described Write-once disc comprises a plurality of temporary disk (T-disk) directorial areas and comprises and the visit information district of the corresponding a plurality of cell blocks of a plurality of temporary disk (T-disk) directorial areas that described recording unit comprises:

Record cell is at the Write-once disc identifying recording layer; And

Controller, control recording unit is carried out following operation:

Write down the temporary disk (T-disk) management structure of the renewal of the temporary disk (T-disk) definition structure that comprises renewal at least one temporary disk (T-disk) directorial area in a plurality of temporary disk (T-disk) directorial areas of on Write-once disc, distributing; With

When the temporary disk (T-disk) definition structure that upgrades is recorded on the predetermined temporary disk (T-disk) directorial area in a plurality of temporary disk (T-disk)s management area, another temporary disk (T-disk) definition structure is recorded at least one cell block of a plurality of cell blocks in visit information district;

Wherein, the visit information district indicates the temporary disk (T-disk) directorial area of the temporary disk (T-disk) definition structure of record final updated in the district of a plurality of renewals, and described another temporary disk (T-disk) definition structure comprises the address information of position of the temporary disk (T-disk) directorial area of the temporary disk (T-disk) definition structure that allows recording unit to find the record final updated;

Wherein, the temporary disk (T-disk) management structure comprises temporary defect list, and described temporary defect list comprises first pointer of the position of pointing to defect area and points to second pointer of the position in the replacement district that replaces defect area;

Wherein, the temporary disk (T-disk) definition structure comprises the positional information of temporary defect list.

2, equipment as claimed in claim 1, wherein, controller repeatedly is recorded in the temporary disk (T-disk) definition structure in the cell block.

3, a kind of reproducer from Write-once disc reproduction data, described Write-once disc comprises a plurality of temporary disk (T-disk) directorial areas and comprises and the visit information district of the corresponding a plurality of cell blocks of a plurality of temporary disk (T-disk) directorial areas that described reproducer comprises:

Reproduction units, reproduction is stored in the temporary disk (T-disk) management structure at least one temporary disk (T-disk) directorial area, described temporary disk (T-disk) management structure comprises temporary defect list and temporary disk (T-disk) definition structure, described temporary defect list comprises first pointer of the position of pointing to defect area and points to second pointer of the position in the replacement district that replaces defect area that described temporary disk (T-disk) definition structure comprises the positional information of temporary defect list;

Controller, the control reproduction units based on the temporary disk (T-disk) directorial area units corresponding piece of temporary disk (T-disk) definition structure of storage final updated, reproduce another temporary disk (T-disk) definition structure that is stored in the visit information district, and in a plurality of temporary disk (T-disk) directorial areas, determine the temporary disk (T-disk) directorial area of the temporary disk (T-disk) definition structure of storage final updated, wherein, the visit information district comprises a plurality of cell blocks;

Wherein, when recording the temporary disk (T-disk) management structure with the corresponding temporary disk (T-disk) directorial area of the cell block in visit information district, each cell block in a plurality of cell blocks in visit information district records described another temporary disk (T-disk) definition structure;

Wherein, described another temporary disk (T-disk) definition structure comprises the address information of the position of the temporary disk (T-disk) directorial area that allows reproduction units to find the temporary disk (T-disk) definition structure that records final updated.

4, equipment as claimed in claim 3, wherein, controller control reproduction units reproduces the temporary disk (T-disk) definition structure that repeatedly is recorded in the cell block.

5, equipment as claimed in claim 3, wherein, described a plurality of temporary disk (T-disk) directorial areas are non-conterminous.

6, equipment as claimed in claim 3, wherein, at least one in a plurality of temporary disk (T-disk) directorial areas is recorded in the Lead-In Area of dish, and in a plurality of temporary disk (T-disk) directorial area at least one is recorded in the user data area.