CN100356458C - Write once disc, method of managing data area of write once disc, and apparatus and method for reproducing data therefor - Google Patents
Write once disc, method of managing data area of write once disc, and apparatus and method for reproducing data therefor Download PDFInfo
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- CN100356458C CN100356458C CNB2004800050005A CN200480005000A CN100356458C CN 100356458 C CN100356458 C CN 100356458C CN B2004800050005 A CNB2004800050005 A CN B2004800050005A CN 200480005000 A CN200480005000 A CN 200480005000A CN 100356458 C CN100356458 C CN 100356458C
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- 238000000034 method Methods 0.000 title claims abstract description 64
- 230000007547 defect Effects 0.000 claims abstract description 105
- 238000007726 management method Methods 0.000 claims description 93
- 230000002950 deficient Effects 0.000 claims description 19
- 238000013507 mapping Methods 0.000 claims description 19
- 230000008676 import Effects 0.000 claims description 15
- 230000008859 change Effects 0.000 claims description 10
- 238000009795 derivation Methods 0.000 claims description 7
- 230000004044 response Effects 0.000 claims description 4
- 230000003760 hair shine Effects 0.000 claims description 2
- 238000004513 sizing Methods 0.000 claims 9
- 230000003287 optical effect Effects 0.000 claims 2
- 238000013500 data storage Methods 0.000 claims 1
- 230000008569 process Effects 0.000 description 5
- 235000013399 edible fruits Nutrition 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000012795 verification Methods 0.000 description 2
- 238000012937 correction Methods 0.000 description 1
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/007—Arrangement of the information on the record carrier, e.g. form of tracks, actual track shape, e.g. wobbled, or cross-section, e.g. v-shaped; Sequential information structures, e.g. sectoring or header formats within a track
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/18—Error detection or correction; Testing, e.g. of drop-outs
- G11B20/1883—Methods for assignment of alternate areas for defective areas
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/18—Error detection or correction; Testing, e.g. of drop-outs
- G11B2020/1873—Temporary defect structures for write-once discs, e.g. TDDS, TDMA or TDFL
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B2220/00—Record carriers by type
- G11B2220/20—Disc-shaped record carriers
Abstract
A write once disc allowing management of a data area, a method of managing the data area of the write once disc, an apparatus recording data on the write once disc, an apparatus and method of reproducing data from a write once disc. The write once disc, includes a lead-in zone, a data area, and a lead-out zone. The write once disc includes a predetermined area storing area allocation information which indicates whether at least one section of the data area is allocated for disc defect management. In the disc and method, area allocation information specifying a structure of the data area is recorded on the disc, thus allowing a recording/reproducing apparatus to recognize the data area structure. Therefore, allocating areas, such as a spare area, for disc defect management other than an area for storing user data, to the data area is possible. The allocation of the areas for disc defect management to the data area enables effective use of the write once disc.
Description
Technical field
The present invention relates to a kind of write once disk, more particularly, relate to a kind of write once disk that allows the district of the data of memory allocated except that user data, a kind of method of managing the data field of write once disk, a kind of in write once disk record data equipment and a kind of from write once disk method of reproducing data and equipment.
Background technology
Defect management is performed the new part that is rewritten to the user data area of dish with the user data of part that allows the user will occur the user data area of defective therein, compensates the loss of the data aspect that is caused by defective thus.Usually, use linear the replacement or slip replacement method execution defect management.In linearity replacement method, the user data area that occurs defective is not therein had the preliminary data district of defective to replace.In slip replacement method, the user data area with defective is slipped over to use the next one not have the user data area of defective.
Linear replacement and slip replacement method both only can use the dish such as DVD-RAM/RW, and data can be repeated record and write down and can use random access method to be performed thereon.
Simultaneously, in addition the method for the defect management of the linear replacement method of the use on the write once disk that is not allowed to of the rewriting of data thereon also be developed.
Yet, have and can not use linear replacement method write once disk to be carried out defect management under the certain situation with recording/reproducing apparatus.For example, when data are recorded on the write once disk in real time, be difficult to use linear replacement method to carry out defect management thereon with recording/reproducing apparatus.
Therefore, have only when needing the defect management of service recorder/reproducer, the spare area just is assigned to write once disk.That is, the distribution of spare area is determined by user's intention.
In addition, if necessary, then can not only distribute the spare area also to distribute other district to the data field of write once disk to be used for defect management.
Yet when non-other district that is used for user data was assigned to the data field, recording/reproducing apparatus can not be discerned the structure of this data field.
In other words, if write once disk does not comprise the information about data area structure, then recording/reproducing apparatus can not determine that whether other district of the information that is used for except that user data is assigned to the data field, can not determine the position and the size of user data area when other district is formed.
After write operation, the information of specifying the district that comprises data is made further write operation or read operation be carried out by the fate of writing dish with the bit mapping format thus.
More particularly, but the recording areas of dish comprise a plurality of for data record unit or error correction unit bunch.If comprise data bunch and blank bunch be recorded as information with the bit mapping format, then recording/reproducing apparatus can easily be visited the district of expectation in write or read operating period.
Specifically, when using write once disk, specify the bit map in the district that comprises data very useful.In other words, need fast detecting therein data write down recently bunch the next one bunch so that to the write once disk write data.Bit map guarantees next bunch fast detecting.
In addition, the use bit map can be checked the variation in the recording status of write once disk, and detects the raw data of record before changing generation.By can change dish recording status to the further record data of the write once disk that comprises data.
Summary of the invention
The invention provides a kind of write once disk, user data and other data can be recorded and manage in the data field thereon.
The dish that the present invention also provides a kind of its data-recording status easily to be checked.
A kind of data field of managing write once disk also is provided in the present invention so that the method that user data and other data can be recorded and manage in the data field.
The present invention also provides a kind of record and the user data of management in the data field of write once disk and the recording unit of other data.
The present invention also provides a kind of and is recorded in method of reproducing data in the write once disk the data field from user data thereon and other data.The present invention also provides a kind of equipment that reproduces data from user data thereon and other data are recorded in write once disk the data field.
According to an aspect of the present invention, provide a kind of write once disk, it comprises: import band, data field and derive band, this dish comprises the fate, and the district whether at least one sector in its storage designation data district is allocated for defect management distributes information.
According to a further aspect in the invention, a kind of write once disk that has at least one recording layer is provided, it comprises the data field of at least one storaging user data and the fate of at least one memory block distribution information, wherein, distribution information in district's indicates at least one sector of at least one data field whether to be allocated for defect management.
According to a further aspect in the invention, a kind of method of managing the data field of write once disk is provided, reception is used in the instruction of at least one part of data field of the dish of defect management about whether needing branch, and recording areas assignment information, its indication is in the fate of dish, and whether at least one sector of data field is allocated for defect management.
According to a further aspect in the invention, provide a kind of recording unit, comprising: the recoding/reproduction unit, its write once disk identifying recording layer or from write once disk reading of data; And controller, its controlling recording/reproduction units is in response to the instruction about whether needing to distribute at least one sector to data field, and the district's distribution information that whether at least one sector of the data field of display disc is allocated for defect management is recorded in the fate of dish.
According to a further aspect in the invention, provide a kind of from write once disk method of reproducing data, comprise: the fate of accesses disk is to read district's distribution information, and acquisition is about the information of the position of at least one sector of the data field of dish from district's distribution information, and this sector is allocated for defect management.
According to a further aspect in the invention, provide a kind of equipment that reproduces data from write once disk, comprising: read the unit, it is from the dish reading of data; And controller, its control is read the fate of unit access dish so that read district's distribution information and obtain information about the position of at least one sector of the data field of dish from district's distribution information, and this sector is allocated for defect management.
Aspect that the present invention is other and/or advantage will partly propose in the following description, partly become clear from describe, perhaps can be by practice of the present invention is understood.
Description of drawings
By the description of carrying out below in conjunction with accompanying drawing to embodiment, it is clear and easier to understand that these and/or others of the present invention and advantage will become, wherein:
Figure 1A and Figure 1B illustrate the structure of write once disk according to an embodiment of the invention;
Fig. 2 illustrates the structure of the single record layer disc of the management that allows the data field according to an embodiment of the invention;
Fig. 3 illustrates the detailed structure in temporary disk (T-disk) defect sturcture shown in Figure 2 (TDDS, Temporary Disc DefectStructure) district;
Fig. 4 illustrates the detailed structure in dummy bit mapping (SBM, the Space Bit Map) district of Fig. 2;
Fig. 5 illustrates the structure of single record layer disc of the management of permission data field according to another embodiment of the present invention;
Fig. 6 illustrates the detailed structure in TDDS+SBM district shown in Figure 5;
Fig. 7 illustrates the structure of single record layer disc of the management of permission data field according to another embodiment of the present invention;
Fig. 8 illustrates the detailed structure of temporary disk (T-disk) directorial area shown in Figure 7 (TDMA, Temporary Disc ManagementArea);
Fig. 9 illustrates the detailed structure in dish shown in Figure 7 and Driver Information+SBM district;
Figure 10 illustrates the structure of single record layer disc of the management of permission data field according to another embodiment of the present invention;
Figure 11 illustrates the detailed structure of TDMA# 1 shown in Figure 10;
Shown in Figure 11 bunch detailed structure that Figure 12 illustrates that TDDS and SBM be recorded in it;
Figure 13 illustrate be included in dish initialization information that dish obtains during the initialization bunch detailed structure;
Figure 14 illustrate comprise the dish reinitialize information bunch detailed structure;
Figure 15 illustrates the structure in SBM district according to an embodiment of the invention;
Figure 16 illustrates the SBM district that finishes according to an embodiment of the invention;
Figure 17 is the block scheme of recording unit according to an embodiment of the invention; And
Figure 18 is the process flow diagram that the method for the data field of managing write once disk according to an embodiment of the invention is shown.
Embodiment
Now, will be in detail with reference to embodiments of the invention, its example is shown in the drawings, and wherein, identical label is represented identical parts all the time.Below, by describing embodiment with reference to the accompanying drawings to explain the present invention.
Figure 1A illustrates according to an embodiment of the invention the structure that it is a write once disk with single record layer disc of single-recordng-layer L0 (below, be called ' dish ').This dish comprises: import band, data field and derive band.Import and be with the inner ring that is positioned at dish, derive the outer ring that band is positioned at dish.The data field appears between importing band and the derivation band and is divided into user data area and spare area.The spare area has the predetermined size that begins from the data field.
It is the dish with double record layer disc of two recording layer L0 and L1 that Figure 1B illustrates it.Outer ring from the inner ring of the first recording layer L0 to it imports band, data field and outskirt and is sequentially formed.In addition, from the outer ring of the second recording layer L1 to its inner ring, outskirt, data field and derive band and sequentially formed.Different with the single record layer disc of Figure 1A, the inner ring of the present second recording layer L1 is taken in the derivation of the second recording layer L1 out of.That is, dish has a backlight path (OTP), and data are begun to the outer ring record from the importing band at the inner ring of the first recording layer L0 therein, and continue to begin to the derivation tape recording at inner ring from the outskirt at the second recording layer L1.The spare area is dispensed to first and second recording layer L0 and the L1 respectively.
In the present embodiment, the spare area appears at and imports between band and the user data area and between outskirt and the user data area.Yet the position of spare area and quantity are unrestricted.
Initialization according to dish of the present invention will be described now.The dish initialization is the recording operation of the preparation that is performed before the use of dish.More particularly, be written to the fate of dish, guarantee recording/reproducing apparatus recognition data plot structure thus about the information of the structure of data field.Whether the district that this information specifies the data about the defect management of service recorder/reproducer except that user data therein of spare area for example to be recorded is assigned to the data field, and specifies the position in this district that is assigned to the data field.As the fruit tray initialization information, promptly, be recorded after the dish initialization about the information of data area structure, then recording/reproducing apparatus can be checked the appearance and the position in the district that the information except that user data therein is recorded, and the detection user data district that will be recorded in it.
Below, with reference to Fig. 2 to Fig. 9 the embodiment that the spare area that is used for defect management therein according to the present invention is formed on the dish of data field is described.
Fig. 2 illustrates the structure of the single record layer disc of the management that allows the data field according to an embodiment of the invention.With reference to Fig. 2, the importing band of dish comprises: defect management (DMA, Defect Management Areas) DMA# 1 and DMA# 2, record condition test section, temporary disk (T-disk) defect sturcture (TDDS, TemporaryDisc Defect Structure) district, temporary defect list (TDFL, Temporary DeFect List) district, dummy bit map section and dish and drive information area.
Usually, when dish was loaded in the recording/reproducing apparatus, recording/reproducing apparatus was from importing band and/or deriving band and read information to determine how to manage this dish and carry out read/write operation.Therefore, increase, then after loading this dish, will spend the record or the reproduction of longer time preparation data if be recorded in the quantity that imports the information in band and/or the derivation band.In order to solve this and/or other problem, the present invention proposes to comprise the temporary management information of TDDS and TDFL, and this temporary management information is by TDFL or TDDS record to form, and imports band and/or derives band and separate.
To be recorded on the dish if no longer include data, then recording/reproducing apparatus begin the dish finish, Ji Lu TDFL and TDDS are registered as defect management information in DMA during this period.Finish by dish, have only the TDFL of nearest record and TDDS to be copied to DMA.Therefore, recording/reproducing apparatus can be finished the dish initialization apace by the information that only reads recent renewal from DMA.In this case, defect management information is stored in a plurality of districts, improves the reliability of information thus.
Use linear replacement method according to the defect management of present embodiment, therefore, the TDFL designation area, that is, take place therein defective dish defective district and replace the replacement district in defective district.It is single defective bunch that TDFL further specifies defective district, and continuous defective bunch of a series of defectives still physically takes place therein.The record position that it specifies TDFL for the TDDS of the information of management TDFL.
Import band and comprise dummy bit mapping (SBM) district, it comprises the bit map about the district that comprises data, that is, but about the information of data recording areas.
The data field comprises spare area # 1 and #2 and user data area.
In the present embodiment, spare area # 1 and #2 are formed at the beginning and the end of data field respectively, are used for the situation of service recorder during the dish initialization/reproducer execution defect management.
Derive band and comprise DMA#3 and #4 and other district.
When the user determines to carry out the defect management of service recorder/reproducer and indicate recording/reproducing apparatus to distribute the spare area in the data field, recording/reproducing apparatus distribution spare area # 1 and #2 are to the predetermined portions of data field, for example, in the beginning and the end of data field.Thereafter, recording/reproducing apparatus will indicate district's distribution information of the distribution of spare area # 1 and #2 to be recorded in first bunch of TDDS district.But the spare area # 1 of district's distribution information assignment of allocation and the size of #2.If the start and end address of spare area # 1 and #2 is determined, for example, when spare area # 1 and #2 were placed the beginning of data field respectively and finish, then recording/reproducing apparatus can be based on information Recognition spare area # 1 and the distribution of #2 and the position and the size of each spare area about the spare area size.
When the start and end address of spare area # 1 and #2 does not have when scheduled, start and end address is determined and record, perhaps is recorded in first bunch of TDDS district about the information of the size of spare area # 1 and #2.
In the present embodiment, distribution information in district's is recorded in the TDDS district, also can be recorded in another district.
To distinguish after distribution information is recorded in first bunch of TDDS, bit shines upon in first bunch that is recorded in the SBM district, the bit mapping is recorded as 1 with the bit corresponding with first bunch the position in TDDS and SBM district, and the bit corresponding with the position of other bunch is recorded as 0.
If the user does not want to carry out the defect management of service recorder/reproducer, then in first bunch of TDDS, district's distribution information that recording/reproducing apparatus will be described the size of spare area # 1 and #2 is recorded as 0.
To distinguish after distribution information is recorded among the TDDS, shine upon in first bunch that is recorded in the SBM district with the 1 indication bit corresponding and with the bit of the corresponding bit in 0 indication and the position of other bunch with first bunch the position in TDDS and SBM district.
As discussed previously, even district's distribution information is recorded among the TDDS and data are recorded on the dish during the shroud initialization formerly, also can be by reinitializing the structure of this dish and update area assignment information change data field.Reinitialize with reference to Figure 14 description dish subsequently.
When the user does not need the defect management of service recorder/reproducer, there is not information to be recorded among the DMA.In this case, even dish is finished be not performed, the district that is recorded in the TDDS district distributes information also to be recorded among the DMA.
Simultaneously, rewritable disk does not comprise TDDS, and therefore, because incompatible data structure, the reproducer that is used for rewritable disk is impossible from the dish information reproduction that has the TDDS district that comprises district's distribution information.In order to solve this and/or other problem, when the execution dish was finished on dish, the information that is recorded in the TDDS district was copied to DMA.
In other words, if the defect management of service recorder/reproducer will not be performed, the district's distribution information that then was recorded in before dish is finished in the TDDS district is recorded among the DMA, guarantees to use rewritable disk transcriber information reproduction from dish thus.
Fig. 3 illustrates the structure in TDDS district shown in Figure 2 according to an embodiment of the invention.
TDDS be recorded to the TDDS district bunch at least once stop up to recording operation.Usually, a plurality of TDDS# 0, TDDS# 1 ... be recorded in the TDDS district.In the present invention, when recording operation stops, TDDS# 0 be recorded to the TDDS district bunch in once.
With reference to Fig. 3, the TDDS district comprises a plurality of bunches.Bunch be the base unit of record and form by the sector of predetermined quantity.The sector is the physical basic unit of dish.
During the dish initialization, when the user determined whether the spare area will be assigned with, district's distribution information of determining of indication user was recorded among the TDDS#0.If TDDS# 0 comprises TDDS identifier, indication to the counter information of the quantity of the renewal of TDDS# 0, about the positional information of Driver Information, have about the positional information of corresponding TDFL, then comprise about the information of the size of spare area # 1 with about the information of the size of spare area #2.As discussed previously, when the user does not need the defect management of service recorder/reproducer and when data separation was joined the spare area, the size of spare area # 1 and #2 was registered as ' 0 '.
Although the detailed structure in TDFL district is not illustrated, TDFL#i comprises about the information of the defective that takes place in the data that write down during recording operation #i with about the information of the replacement that is used for described defective.In addition, previous TDFL# 0, #1, #2, ..., #i-1 is not accumulated among the TDFL#i, and only the information about the defective that takes place in the recording areas that obtains during corresponding recording operation #i is recorded among the TDFL#i, minimizes recording capacity thus and guarantees effective use of the record space of TDDS.
Fig. 4 illustrates the structure in SBM district shown in Figure 2 according to an embodiment of the invention.The SBM district comprises a plurality of bunches, and during each SBM#i is recorded in bunch.
Each SBM#i comprises SBM Head Section and bit map area.In the SBM Head Section, record SBM identifier information, indication are to the counter information of the quantity of the renewal of SBM#i and finish mark.Subsequently mark is finished in description.
Bit map area comprises bit mapping, but for the whole recording areas of dish, its with bunch unit with different bit value indications comprise data bunch and blank bunch.
After record TDDS# 0, SBM# 0 is recorded in first bunch of SBM district.In the mapping of the bit of SBM# 0, the bit corresponding with first bunch the position of TDDS and with the corresponding bit in first bunch position by with 1 expression, and with residue bunch corresponding bit by with 0 expression.
Therefore, record is checked the appearance of spare area and the position or the size of definite spare area that distributes about the size information permission recording/reproducing apparatus of spare area in TDDS#0.In addition, recording/reproducing apparatus is by writing down the SBM# 0 district that comprises data and the clear area of identification dish apace after record TDDS# 0.
In dish shown in Figure 2, TDDS district, TDFL district and SBM district are formed separately, and TDDS, TDFL and SBM are by respectively with bunch unit record therein.Yet the record of TDDS and SBM is not limited to these districts, that is, they can be recorded in the different districts.
Fig. 5 illustrates the structure of the single record layer disc of the management that allows the data field according to an embodiment of the invention.In the present embodiment, import band and comprise the district that TDDS and SBM are recorded in it.
When the user wanted to carry out the defect management of service recorder/reproducer and indicate recording/reproducing apparatus to distribute the spare area, recording/reproducing apparatus distributed spare area # 1 and #2 with the beginning and the end of predetermined size in the data field respectively.
Then, recording/reproducing apparatus will indicate the assignment information of the distribution of spare area # 1 and #2 to be recorded in TDDS and SBM first bunch.
Fig. 6 illustrates the detailed structure in TDDS+SBM district shown in Figure 5.With reference to Fig. 6, during TDDS and SBM are recorded in bunch.TDDS comprises the size information about each spare area and SBM, that is, district's distribution information, and SBM comprises the bit mapping.
To distinguish after distribution information is recorded in first bunch of TDDS+SBM district, the bit that the bit mapping will be used for first bunch the position in TDDS+SBM district is recorded as 1, and the bit that will be used for the position of other bunch is recorded as 0.
Fig. 7 illustrates the structure of the management single record layer disc of data field according to an embodiment of the invention.In the present embodiment, import band and comprise: temporary disk (T-disk) directorial area (TDMA), TDFL and TDDS are recorded therein; With dish and Driver Information+SBM district, dish and Driver Information and SBM are recorded therein.That is, during TDFL and TDDS are recorded in bunch, and during dish and Driver Information and SBM be recorded in bunch.
Similar with Fig. 2 and the described embodiment of Fig. 5, the user determines the defect management of service recorder/reproducer and indicates recording/reproducing apparatus to distribute the data field of spare area to dish.Then, the recording/reproducing apparatus beginning and the end that are dispensed to the data field with predetermined big young pathbreaker spare area # 1 and #2.
Then, recording/reproducing apparatus will indicate district's distribution information of the distribution of spare area # 1 and #2 to be recorded in first bunch of TDMA.
Fig. 8 illustrates the detailed structure of TDMA shown in Figure 7.TDMA comprise that disc defect management information is recorded in it bunch.In each bunch, TDDS and TDFL are recorded.TDDS comprises the information about the position of spare area, and this information is district's distribution information.
Fig. 9 illustrates the detailed structure in dish shown in Figure 7 according to an embodiment of the invention and Driver Information+SBM district.
Each bunch comprises dish and Driver Information and SBM information.SBM information comprises the bit mapping.
Be recorded in first bunch of TDMA about the information of spare area.Next, bit mapping is used for first bunch the bit in TDMA and dish and Driver Information and SBM district with 1 indication, and indicates the bit that is used to remain bunch with 0.
Figure 10 illustrates the structure of the single record layer disc of the management that allows the data field according to an embodiment of the invention.Different with the dish according to the foregoing description, the dish of Figure 10 also comprises the TDMA# 2 in the data field except importing the TDMA# 1 in the band.
Import band if TDMA only is assigned to, then the size of TDMA is limited, and therefore makes to be difficult to lastest imformation frequently.The quantity of necessary information updating can be reduced by upgrade TDDS when from the recording/reproducing apparatus ejection tray.Yet in this case, the power supply that ought be used for recording/reproducing apparatus during write operation is owing to unexpected accident, and when being interrupted such as power fail, the renewal of TDDS will be stopped by halves.
In order to solve this and/or other problem, the dish of Figure 10 also is included in the TDMA# 2 in the data field.TDDS is updated and obtains the unit record carried out with verify-after-write method therein, make thus its to since the fault in upgrading TDDS that the interruption that power supply is supplied with causes he does some preparations.Just before ejection tray, be repeatedly recorded among TDMA# 1 and the #2 about the final defect information of dish and status information, increase the robustness of information thus.
The reason that forms TDMA# 2 in the data field is that to need TDMA# 2 be well-to-do to the frequent updating of the information among the TDMA#2.On the other hand, it is well-to-do that TDMA# 1 needs not be, and therefore is formed on to import in the band (or deriving band).
If the user does not need the defect management of service recorder/reproducer, although perhaps the user wants the disc defect management method of service recorder/reproducer not need the distribution of TDMA# 2 during the dish initialization, then TDMA# 2 will not be assigned to the data field, and indicate district's distribution information of this information to be recorded among the TDMA# 1.
Figure 11 illustrates the detailed structure of TDMA# 1 shown in Figure 10.With reference to Figure 11, TDFL, TDDS and SBM are recorded among the TDMA#1.More particularly, TDDS and SBM are recorded among bunch TDDS+SBM#k, and TDFL is recorded in (k is the integer greater than 0) in another bunch.TDMA# 2 has the structure identical with TDMA# 1, and its detailed description will be omitted.
Figure 12 is illustrated in the detailed structure of bunch TDDS+SBM#k as shown in figure 11 that wherein TDDS and SBM be recorded.With reference to Figure 12, TDDS designated recorder condition test district, Driver Information, TDFL, spare area # 1 and #2, TDMA# 2, be used for the TDDS+SBM district of another recording layer and be used for the position in the TDDS+SBM district of another TDMA.
Start and end address as each district of fruit tray is determined, and is enough about the information of the size of spare area # 1 and #2 and TDMA# 2 as their positional information then.Otherwise positional information is by to indicate with the start and end address of each corresponding they, district of dish.
Have at least two recording layers as fruit tray, then need to be used for the SBM of each recording layer.
Figure 13 illustrates the detailed structure of bunch TDDS+SBM# 0 that is included in the dish initialization information that obtains during the dish initialization.Figure 13 illustrates spare area # 1 and #2 and TDMA# 2 and is formed on situation in the data field.With reference to Figure 13, be registered as the dish initialization information about the information of spare area # 1 and #2 and TDMA# 2 size.In this case, be understood that the start and end address in each district is determined.
Even the spare area is assigned to the data field and distribute information disk to be initialised by the district that the record indication distributes, also can be by reinitializing the structure that dish and update area assignment information change the data field.
Figure 14 illustrates and comprises the detailed structure that dish reinitializes bunch TDDS+SBM#n+1 of information.With reference to Figure 14, the information of the change of the size of assign alternate area # 1 and #2 and TDMA# 2 is recorded in the TDDS district.
Let us hypothesis spare area # 1, TDMA# 2, user data area and spare area # 2 sequentially are formed in the data field, and defect information by from bunch beginning with maximum address to having bunch being recorded in the spare area # 2 of lowest address.In this case, dish reinitialize be performed with use effectively the maximum address with user data area bunch and have the lowest address of spare area # 2 bunch between recording areas.
In other words, dish reinitializes the size that increases or reduce spare area # 2, therefore guarantees effective use of recording areas.
Dish reinitializes information and is recorded among at least one bunch TDDS+SBM that belongs to TDMA# 1 or TDMA# 2.
Below, be SBM with describing it in more detail about the information of data recorded area.
Figure 15 illustrates the structure in SBM district according to an embodiment of the invention.With reference to Figure 15, provide the SBM# 0 to #n of data recorded area information to be recorded in the SBM district.In the present embodiment, during SBM#i is recorded in bunch (i is the integer from 0 to n).Yet to shown in Figure 9, SBM#i can be in out of Memory be recorded in bunch as Fig. 6.
Each SBM#i provides header, and it comprises the SBM descriptor, finishes mark and refresh counter; And bit mapping #i (i is the integer from 0 to n), but it is with bunch recording areas of the whole recording areas of unit display disc.
Dish is gone up and data recorded area information changes if data further are recorded in, and each SBM#i that then comprises the new bit mapping of data of description recording areas is produced and record.In this case, refresh counter is represented the number of times that data recorded area information is updated.
Time moment when each SBM#i is produced and upgrades can differently be determined according to the program that is installed in the recording/reproducing apparatus.Yet, after being recorded in data on the dish, must be produced and record at SBM#i new before the recording/reproducing apparatus ejection tray.
Whether finish the mark display disc is done.
Figure 16 illustrates the SBM district that finishes according to an embodiment of the invention.The mark of finishing that is used for the head of SBM is set to 0 and with the out of Memory record.With reference to Figure 16, just the SBM of record is SBM#n before dish is finished.If finish order by from such as the main frame of computing machine when recording/reproducing apparatus provides, recording/reproducing apparatus will be by changing into 1 and write down finishing that this SBM#n comes that display disc finishes once more from 0 about the mark of finishing in the information of the SBM#n of final updating.
If necessary, recording/reproducing apparatus can no longer allow to write down SBM by being recorded in such as the data of " ffh " to close in next district that comprises the district with the SBM#n that finishes mark ' 1 ', prevents extra data recording on dish thus.
The user can remain on the recording status of finishing the dish of time moment when being performed when dish based on having the SBM that finishes mark ' 1 '.Data on the dish of finishing are changed or new data are added to raw data under situation without permission even be recorded in, can be by with reference to being included in the raw data that the bit mapping that has among the SBM that finishes mark ' 1 ' detects record during dish is finished.Therefore, the data that add after dish is finished can easily be detected.
Therein the district that is recorded of each SBM#i be placed in data field shown in Figure 1A and Figure 1B, import band and derive in the band one of at least.
Spare area and TDMA are assigned to the data field in the above embodiments, but district that spare area and TDMA are assigned to and the district that is assigned to the data field are unrestricted.For example, TDMA district and TDDS district also can be assigned to the data field.In addition, TDDS district and SBM district are assigned to the importing band in the foregoing description, also can be formed in data field and the derivation band.
Although not shown in figures, the TDFL district can be formed in the data field.In this case, if the user wants the defect management of service recorder/reproducer, then the user distributes spare area # 1, spare area # 2 and TDFL district as mentioned above, and record TDDS and SBM.TDFL can be positioned in and import between band and the spare area # 1, between spare area # 1 and the user data area, in the centre of user data area, between user data area and the spare area # 2 and at spare area # 2 with derive between the band.
If the user does not want the defect management of service recorder/reproducer, then do not need the distribution of spare area.Yet,, need the TDFL district with the memory disc defect information if the user uses the disc defect information that obtains by scanning disk record data in real time.Therefore, TDFL is assigned with during the dish initialization.
In according to embodiment above of the present invention, description is about the record of the management and the bit mapping of the spare area of single record layer disc.Yet the present invention can be applied to double record layer disc.
Write once disk according to the present invention comprises the TDMA that is used for defect management.Yet, be rewritable disk as fruit tray, dish comprises DMA, but does not comprise TDMA.Therefore, the rewritable disk recording/reproducing apparatus can not reproduce data and record data thereon from the dish that has TDMA,, cause the compatibility issue that coils that is.Compatible in order to solve dish, the TDFL that was recorded in the TDDS district before the finishing of dish is copied to TDMA.
Figure 17 is the block scheme of recording/reproducing apparatus according to an embodiment of the invention.With reference to Figure 17, recording/reproducing apparatus comprises: recoding/reproduction unit 1, controller 2 and storer 3.
Under the control of controller 2, recoding/reproduction unit 1 is recorded in data according on the dish 100 of the present invention, and from coiling the accuracy of 100 reading of data with the data of calibration tails.
The data field of controller 2 management dishes 100.In addition, controller 2 is carried out verify-after-write method, therein, data by with predetermined unit record on dish 100 and the accuracy of the data of record by verification with the district of detection dish 100 defectiveness whether.More particularly, controller 2 record the user data on the dish 100 with predetermined unit and the user data of calibration tails to detect the district of the dish 100 that has defective therein.Then, controller 2 is created the temporary defect list (TDFL) and the temporary disk (T-disk) defect sturcture (TDDS) of the position of specifying the district that has defective.Then, controller 2 is stored in TDFL and the TDDS that creates in the storer 3 provisionally.When the TDFL of storage and the quantity of TDDS reached predetermined rank, controller 2 was recorded in TDFL and TDDS in the fate of dish 100, that is, and and temporary disk (T-disk) directorial area (TDMA).
Here, dish 100 dishes that comprise according to previous embodiment of the present invention.
When the user wants to carry out the defect management of all service recorder equipment as shown in figure 17 and indicates recording unit to distribute the spare area in the data field, recording unit is with the spare area, for example, spare area # 1 and spare area # 2 are dispensed to the predetermined portions of the data field of dish, for example, in the beginning and the end of data field.
Then, recording/reproducing apparatus will indicate district's distribution information of the distribution of spare area # 1 and #2 to be recorded in first bunch of TDDS.But the spare area # 1 of district's distribution information assignment of allocation and the size of #2.If the start and end address of spare area # 1 and #2 is determined, for example, when spare area # 1 and #2 are placed the beginning of data field respectively and are finished, then recording unit can be discerned the distribution of spare area # 1 and #2, also can be only based on position and size about the information Recognition spare area # 1 and the #2 of spare area size.
For this reason, when the start and end address of spare area # 1 and #2 was not determined, these addresses were determined and write down or be recorded in about the information of the size of spare area # 1 and #2 in first bunch of TDDS.
Now with reference to Figure 17 and Figure 18 the method for the data field of the management dish of service recorder equipment is according to an embodiment of the invention described.
Figure 18 illustrates the process flow diagram of the method for the data field of management dish 100 according to an embodiment of the invention.Before recording the user data on the dish 100, be performed (operation 110) in response to the initialization of user's input disc 100.Then, the information about the distribution of at least one sector of the data field of the dish 100 that whether needs to be used for defect management is sent to controller 2 (operation 120) from the main process equipment such as computing machine.As discussed previously, it is known being counted as for those skilled in the art such as the distribution of the sector of the data field that is used for defect management of spare area or TDMA.Perhaps, whether at least one sector that the recording/reproducing apparatus except that main process equipment can the specified data district will be assigned with.
Then, controller 2 controlling recording/reproduction units 1 will be distinguished distribution information and be recorded in dish 100 the fate, and wherein, the district distributes at least one sector of information description data field whether to be assigned with (operation 130).Distribution information in district's can be specified the size of at least one part that is used for defect management.
Suppose that as shown in Figure 2 at least one sector that is used for defect management comprises spare area # 1 and spare area # 2, and the end position of the starting position of spare area # 1 and spare area # 2 has been placed the beginning and the end of data field respectively.In this case, recording unit not only can be discerned the distribution of spare area # 1 and #2, and can be only based on their position of information Recognition and size about spare area # 1 and #2.
When the defect management when the user does not need when service recorder equipment and not having is distributed such as at least one sector of the data field of spare area, indicate the district of the size of at least one sector to distribute information to be recorded in the fate of dish 100 with 0.
District's distribution information can be recorded in importing band, the data tape that is formed at dish 100 and derive band one of at least in TDDS in.In addition, TDDS can be recorded in the not same district shown in Fig. 3,6,8 and 12.
By will distinguish in 130 in operation after distribution information is recorded in the initialization of finishing dish 100 on the dish 100, recording unit can record the user data in and coil on 100 and carry out defect management.
After operation 130, recording unit records the user data in the user data area of dish 100, and uses spare area and TDMA to carry out defect management (operation 140).
Even after the dish initialization, the structure that reinitializes the data field that allows change dish 100 of dish 100.
Then, reinitialized (operation 150) in response to user's input disc.Then, the structure in designation data district is inputed to controller 2 by the order that its distribution of carrying out new district is redefined from main process equipment.
Then, controller 2 controlling recording/reproduction units 1 will be recorded in about district's distribution information in new district in the fate of dish 100, thus update area assignment information (operation 160).
For example the information about the district that comprises data of SBM is recorded on the dish 100.The header of SBM comprises representing multidata more whether can be recorded in the mark of finishing on the dish.When finishing mark and be 1, to use with this and finish the corresponding bit mapping of mark 1, the change of coiling recording status can be examined and the raw data before this change can be detected.
If the user does not want to carry out the defect management of service recorder equipment, then there are not data to be recorded among the DMA.Whether therefore, no matter dish is finished be done, the district that is recorded among the TDMA distributes information all to be recorded among the DMA.
Because rewritable disk does not comprise the TDDS district, so because compatibility issue, it is impossible using the rewritable disk reproducer to reproduce data from the write once disk that has the TDMA that comprises district's distribution information.In order to solve this and/or other problem, the information that is recorded among the TDMA during the dish initialization is recorded among the DMA, thus assurance dish compatibility.
If do not need the defect management of service recorder equipment, the district's distribution information that then was recorded in before dish is finished among the TDMA is recorded among the DMA, guarantees to use the rewritable disk reproducer to reproduce data thus from dish.
For example, although not shown in the diagrammatic sketch, but according to the present invention, reproducer reproduces data from the dish 100 that comprises district's distribution information, have and the similar structure of the recording unit of Figure 17, except reproducer includes only the reproduction units that only is used for data read, rather than the recoding/reproduction unit 1 of recording/reproducing apparatus.In the time of in dish 100 is loaded into according to reproducer of the present invention, the district that comprises final updating that reproducer is visited TDMA for example distributes the fate of information and distributes information so that read the district of final updating.Then, reproducer distributes the information of information acquisition about the position of at least one sector of the data field that is used for defect management from the district of final updating.As mentioned above, this at least one sector comprises TDMA and spare area.Distinguish the structure in recognition data district fully because reproducer can distribute based on the district,, can also read and be stored in the TDMA that is dispensed to the data field and the data that are used for defect management in the spare area so reproducer not only can read user data.
As mentioned above,, be recorded on the write once disk, therefore allow recording/reproducing apparatus recognition data plot structure about district's distribution information of the structure of data field according to the present invention.Therefore, the differentiation such as the spare area that is used for defect management except that the district that is used for storaging user data is assigned to the data field, effective use of assurance dish.
In addition, after the dish initialization, the structure of data field can be changed by reinitialize the update area assignment information via dish.
In addition, but the bit of specific data recording areas mapping is recorded in the fate of dish, guarantees that thus recording/reproducing apparatus visits the district of expectation apace.Whether the bit mapping also allows recording/reproducing apparatus inspection dish recording status to change and detects the data of original record before this variation, and this change is by taking place in the extra data of disc recording.
Although some embodiments of the present invention are illustrated and describe, but those skilled in the art should understand, without departing from the principles and spirit of the present invention, can do variation to embodiment, scope of the present invention defines in claim and equivalent thereof.
Claims (29)
1, a kind of method of managing the data field of write once disk comprises:
Reception is used in the instruction of at least one sector of data field of the dish of defect management about whether needing branch; And
The district's distribution information whether at least one sector of the described data field of indication is allocated for defect management is recorded in the temporary disk (T-disk) defect sturcture in the temporary defect management area in the fate that is formed at dish, wherein, the district's distribution information that is recorded in the temporary disk (T-disk) defect sturcture is recorded in the defect management.
2, the method for claim 1, wherein the step of recording areas assignment information comprises that record specifies the information of size of at least one sector of described data field.
3, the method for claim 1, wherein the step of recording areas assignment information comprise with described district's distribution information be recorded in the importing band, data field and the derivation band that are formed at dish one of at least in temporary disk (T-disk) defect sturcture district.
4, the method for claim 1 also comprises:
But record is about the information of data recording areas,
Wherein, but comprise that about the information of data recording areas header and indication comprise the bit mapping in the district of data.
5, method as claimed in claim 4, wherein, but record comprise about the step of the information of data recording areas: comprise the bit value that the predetermined value record bit corresponding with the fate that comprises the data whether at least one sector of indicating described data field be assigned with in the district of data shines upon with indication.
6, method as claimed in claim 4, wherein, header comprises indicating multidata more whether can be recorded in the mark of finishing on the write once disk.
7, method as claimed in claim 2, wherein, the step of recording areas assignment information comprises: when at least one sector of described data field is not assigned with, will indicate district's distribution information of the size of described at least one sector to be recorded as 0.
8, the method for claim 1 also comprises:
The district's distribution information that is recorded in temporary defect management area is recorded in the defect management.
9, the method for claim 1, wherein at least one sector of described data field comprises: spare area, temporary disk (T-disk) defect sturcture district, temporary defect list district and temporary defect management area one of at least.
10, the method for claim 1, wherein, the step of recording areas assignment information comprises: will indicate and distribute second temporary defect management area to district's distribution information of data field to be recorded in one of first temporary defect management area in the importing band that is formed at dish and second temporary defect management area.
11, method as claimed in claim 10, wherein, first temporary defect management area is to eject the district that the temporary disk (T-disk) defect sturcture upgraded before the write once disk is recorded in it from record and/or reproducer, and
Second temporary defect management area be the temporary disk (T-disk) defect sturcture upgraded by unit record district therein with scheduled operation, wherein, described operating period data be recorded.
12, the method for claim 1 also comprises:
In response to the reformed order of big young pathbreaker of described at least one sector of indication, district's distribution information of the change of the size by will specifying described at least one sector is recorded in comes the update area assignment information in the fate.
13, method as claimed in claim 3, wherein, during the recording areas assignment information, distribution information in district's is recorded in from least one bunch that begins of temporary disk (T-disk) defect sturcture.
14, a kind of from write once disk method of reproducing data, comprising:
Information is distributed with the district whether at least one sector of reading the designation data district is allocated for defect management in the fate of accesses disk; And
Obtain district's distribution information, wherein, described fate is formed at the temporary disk (T-disk) defect sturcture in the temporary defect management area, and the district's distribution information that is recorded in the temporary disk (T-disk) defect sturcture is recorded in the defect management.
15, method as claimed in claim 14, wherein, distribution information in district's comprises the information of the size of specifying described at least one sector.
16, method as claimed in claim 14, wherein, the sector that is dispensed to the data field that is used for defect management comprises: spare area, temporary disk (T-disk) defect sturcture district, temporary defect list district or temporary defect management area.
17, method as claimed in claim 14, wherein, dish also comprises: be formed at second temporary defect management area that imports first temporary defect management area in the band and be formed at the data field,
Wherein, the indication of district's distribution information distributes second temporary defect management area to the data field, and the fate that distribution information in district's is recorded in it is one of first and second temporary defect management area.
18, method as claimed in claim 14, wherein, the fate of memory block distribution information is the temporary disk (T-disk) defect sturcture district in importing band, data field or the derivation band that is formed at dish.
19, method as claimed in claim 14, wherein, described at least one sector comprises: spare area, temporary disk (T-disk) defect sturcture district, temporary defect list district and temporary defect management area one of at least.
20, a kind of method of managing recording medium comprises:
Defect management information is stored in first district with first pre-sizing;
Record the user data in second district with second pre-sizing; And
The data storage that to replace detected defective unit in second district based on defect management information is in the 3rd district with the 3rd pre-sizing, and wherein, second district is adjacent with first district.
21, the method for stating as claim 20, wherein, first district be Lead-In Area on recording medium and leading-out zone one of at least.
22, method as claimed in claim 20, wherein, first, second of each respective area of recording medium and the 3rd pre-sizing are changed to upgrade each pre-sizing by reinitializing recording medium.
23, method as claimed in claim 22, wherein, when not carrying out defect management, the pre-sizing in the 3rd district is set to zero so that the size maximization in second district.
24, method as claimed in claim 20, wherein, recording medium is a write-once optical disc.
25, method as claimed in claim 24, wherein, first district be in Lead-In Area on the write-once optical disc and the leading-out zone one of at least.
26, method as claimed in claim 25, wherein, first district is divided into and is changed to a plurality of defect managements adjacent one another are.
27, method as claimed in claim 26, wherein, first, second of each respective area of write once disk and the 3rd pre-sizing are changed to upgrade each pre-sizing by reinitializing this write once disk.
28, method as claimed in claim 27, wherein, when not carrying out defect management, the pre-sizing in the 3rd district is set to zero so that the size maximization in second district.
29, method as claimed in claim 26, wherein, but at least one of a plurality of defect management district is the dummy bit map section of the appointment bit map corresponding with the data recording areas, wherein, recording/reproducing apparatus can be visited the district of expectation apace.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020030015858 | 2003-03-13 | ||
| KR1020030015858A KR100936026B1 (en) | 2003-03-13 | 2003-03-13 | Disc capable of managing spare area for defect management, and the method thereof, and reproducing method |
| KR1020030019964 | 2003-03-31 | ||
| US60/477,955 | 2003-06-13 | ||
| KR1020040007533 | 2004-02-05 |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2006100931333A Division CN1870148B (en) | 2003-03-13 | 2004-03-11 | Write once disc, method of managing the data area of write once disc, and apparatus for reproducing data from write once disc |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1754212A CN1754212A (en) | 2006-03-29 |
| CN100356458C true CN100356458C (en) | 2007-12-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2006100931333A Expired - Lifetime CN1870148B (en) | 2003-03-13 | 2004-03-11 | Write once disc, method of managing the data area of write once disc, and apparatus for reproducing data from write once disc |
| CNB2004800050005A Expired - Lifetime CN100356458C (en) | 2003-03-13 | 2004-03-11 | Write once disc, method of managing data area of write once disc, and apparatus and method for reproducing data therefor |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2006100931333A Expired - Lifetime CN1870148B (en) | 2003-03-13 | 2004-03-11 | Write once disc, method of managing the data area of write once disc, and apparatus for reproducing data from write once disc |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR100936026B1 (en) |
| CN (2) | CN1870148B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101636875B1 (en) * | 2009-10-26 | 2016-07-06 | 삼성전자주식회사 | Information storage medium, recording reproducing apparatus, recording reproducing method |
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| WO2000046805A1 (en) * | 1999-02-01 | 2000-08-10 | Matsushita Electric Industrial Co., Ltd. | Information recording medium, information recording method and information recording/reproduction system |
| WO2000054274A1 (en) * | 1999-03-08 | 2000-09-14 | Matsushita Electric Industrial Co., Ltd. | Information recording medium, information recording method, information recording apparatus and information reproducing apparatus |
| WO2001067449A2 (en) * | 2000-03-08 | 2001-09-13 | Matsushita Electric Industrial Co., Ltd. | Information recording medium, information recording method and information reproduction method |
| CN1323035A (en) * | 2000-04-08 | 2001-11-21 | 三星电子株式会社 | Method for checkingout optical disk imperfect management area information and apparatus for implementing the same method |
| JP2002288938A (en) * | 2001-03-22 | 2002-10-04 | Toshiba Corp | Information recording medium, information recorder, information recording method, information reproducing device and information reproducing method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR100689577B1 (en) * | 2000-01-26 | 2007-03-08 | 엘지전자 주식회사 | Recording medium and method for recording/reproducing |
| JP2002329321A (en) | 2001-04-27 | 2002-11-15 | Sony Corp | Recorder and player |
| JP4026519B2 (en) * | 2003-03-12 | 2007-12-26 | ソニー株式会社 | Recording medium, recording apparatus, reproducing apparatus, recording method, reproducing method |
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2003
- 2003-03-13 KR KR1020030015858A patent/KR100936026B1/en not_active IP Right Cessation
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2004
- 2004-03-11 CN CN2006100931333A patent/CN1870148B/en not_active Expired - Lifetime
- 2004-03-11 CN CNB2004800050005A patent/CN100356458C/en not_active Expired - Lifetime
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000046805A1 (en) * | 1999-02-01 | 2000-08-10 | Matsushita Electric Industrial Co., Ltd. | Information recording medium, information recording method and information recording/reproduction system |
| WO2000054274A1 (en) * | 1999-03-08 | 2000-09-14 | Matsushita Electric Industrial Co., Ltd. | Information recording medium, information recording method, information recording apparatus and information reproducing apparatus |
| WO2001067449A2 (en) * | 2000-03-08 | 2001-09-13 | Matsushita Electric Industrial Co., Ltd. | Information recording medium, information recording method and information reproduction method |
| CN1323035A (en) * | 2000-04-08 | 2001-11-21 | 三星电子株式会社 | Method for checkingout optical disk imperfect management area information and apparatus for implementing the same method |
| JP2002288938A (en) * | 2001-03-22 | 2002-10-04 | Toshiba Corp | Information recording medium, information recorder, information recording method, information reproducing device and information reproducing method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1870148B (en) | 2012-04-04 |
| CN1754212A (en) | 2006-03-29 |
| CN1870148A (en) | 2006-11-29 |
| KR100936026B1 (en) | 2010-01-11 |
| KR20040081525A (en) | 2004-09-22 |
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Application publication date: 20060329 Assignee: TONLY ELECTRONICS HOLDINGS Ltd. Assignor: Blue light United Co.,Ltd. Contract record no.: 2014990000240 Denomination of invention: Write once disc, method of managing data area of write once disc, and apparatus and method for reproducing data therefor Granted publication date: 20071219 License type: Common License Record date: 20140423 Application publication date: 20060329 Assignee: Shenzhen Maxmade Technology Co.,Ltd. Assignor: Blue light United Co.,Ltd. Contract record no.: 2014990000239 Denomination of invention: Write once disc, method of managing data area of write once disc, and apparatus and method for reproducing data therefor Granted publication date: 20071219 License type: Common License Record date: 20140423 Application publication date: 20060329 Assignee: CHINA HUALU GROUP Co.,Ltd. Assignor: Blue light United Co.,Ltd. Contract record no.: 2014990000238 Denomination of invention: Write once disc, method of managing data area of write once disc, and apparatus and method for reproducing data therefor Granted publication date: 20071219 License type: Common License Record date: 20140423 Application publication date: 20060329 Assignee: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS Corp.,Ltd. Assignor: Blue light United Co.,Ltd. Contract record no.: 2014990000237 Denomination of invention: Write once disc, method of managing data area of write once disc, and apparatus and method for reproducing data therefor Granted publication date: 20071219 License type: Common License Record date: 20140423 Application publication date: 20060329 Assignee: GUANGZHOU PANYU JUDA CAR AUDIO EQUIPMENT Co.,Ltd. Assignor: Blue light United Co.,Ltd. Contract record no.: 2014990000233 Denomination of invention: Write once disc, method of managing data area of write once disc, and apparatus and method for reproducing data therefor Granted publication date: 20071219 License type: Common License Record date: 20140422 |
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Application publication date: 20060329 Assignee: Dongguan de video technology Co.,Ltd. Kit Assignor: Blue light United Co.,Ltd. Contract record no.: 2016990000233 Denomination of invention: Write once disc, method of managing data area of write once disc, and apparatus and method for reproducing data therefor Granted publication date: 20071219 License type: Common License Record date: 20160614 |
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