JP2009181693A - Recording method and reading method for temporary defect list - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To efficiently use the area of a write-once type information recording medium, and to record and reproduce a temporary defect list with high reliability. <P>SOLUTION: The method includes: recording a temporary defect list generated during data recording on the write-once type information recording medium in at least one cluster of the write-once type information recording medium; verifying whether a defect has occurred in at least one cluster; recording data recorded in the defect-occurring cluster in another cluster; and recording pointer information indicating the location of at least one cluster where the temporary defect list is recorded on the write-once information recording medium. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a write-once information recording medium, and more particularly to a method for recording a temporary defect list on a write-once information recording medium, a reproducing method thereof, a recording and / or reproducing apparatus thereof, and a write-once information recording medium.

  Defect management means that if a defect occurs that cannot correctly reproduce the data recorded on the information recording medium, the data recorded at the position where the defect has occurred is recorded again at another position on the information recording medium. It means preventing data loss due to occurrence.

  Conventionally, defect management is roughly divided into a defect management method using linear replacement and a defect management method using skipping. The linear replacement means that, when a defect occurs in the data area, the defective area is replaced with a spare area provided in the data area where no defect has occurred. “Blowing” refers to sequentially using areas in which no defect has occurred after “flighting” without using the area in which the defect has occurred.

  The linear replacement method and the skip method are mainly applied to discs that can be repeatedly recorded such as DVD-RAM / RW (rewritable) and can be recorded by the random access method.

  Recently, a method for realizing defect management by a data recording and / or reproducing apparatus has been considered on a write-once type information recording medium having a characteristic that once data is recorded, it cannot be erased and recorded again.

  The defect management of the write-once information recording medium using linear replacement will be described in more detail. A data recording and / or reproducing apparatus that receives a user data recording command and user data from a host records user data in cluster units, which are data recording units. The data recording and / or reproducing apparatus records the data again in the spare area provided in the data area if a defect occurs in the cluster of the user data area in which the user data is recorded by performing a verification process after recording. .

  The data recording and / or reproducing device, after completing a predetermined time interval or one data recording operation during data recording, the position information of the cluster in the user data area where the defect has occurred and the data recorded in the cluster Is generated in a temporary defect list (temporary defect list: TDFL) including the re-recorded spare area location information of the spare area, and then recorded in the temporary disk management area (depolar disk management area: TDMA). In addition, the data recording and / or reproducing apparatus records the pointer information indicating the position where the TDFL is recorded in the TDMA after recording the TDFL in the TDMA.

  When the write-once information recording medium is loaded again into the data recording and / or reproducing apparatus, the data recording and / or reproducing apparatus reads the TDFL from the write-once information recording medium and stores it in the memory. When further data is recorded on the write-once type information recording medium, if a new defective cluster is generated by recording the additional data, the data recorded in the defective cluster is re-recorded in the spare cluster in the spare area. Next, an updated TDFL including the position information of the new defective cluster and the position information of the alternative cluster corresponding to the defective cluster is generated in the TDFL stored in the memory, and then recorded in the TDMA. The pointer information indicating the position where the recorded TDFL is recorded is recorded in the TDMA.

  Accordingly, when a write-once information recording medium is loaded for reproducing user data, the data recording and / or reproducing apparatus first approaches the TDMA and indicates the position where the finally updated TDFL is recorded. After obtaining the pointer information, the updated TDFL is finally obtained. The data recording and / or reproducing apparatus can reproduce user data without error with reference to the finally updated TDFL.

  As described above, since the TDFL is very important information in reproducing user data, it is required to record the TDFL with high reliability. Therefore, when a TDFL is recorded, the verification process after recording is performed in the same way as when recording user data, and if a defective cluster occurs, the data recorded in the defective cluster is re-recorded in another cluster of TDMA. To do.

  According to the prior art, when the size of the TDFL corresponds to two or more clusters and is recorded in two or more clusters, if a single defect cluster is generated by performing a verification process after recording, Re-record the TDFL in other clusters again. However, since the TDMA is smaller than the data area, the data recording amount is not large. Therefore, when the TDFL is defect-managed by the above-described prior art, there is a problem that TDMA is consumed quickly.

Japanese Patent Laid-Open No. 11-039801 JP 09-167446 A Japanese Patent Laid-Open No. 06-338139

  A problem to be solved by the present invention is a method of recording a TDFL on a write-once information recording medium that records the TDFL with high reliability and improves the utilization of an area allocated for recording the TDFL, and the recording thereof The device is on offer.

  Another problem to be solved by the present invention is to improve the utilization of the area allocated to the write-once information recording medium for recording the TDFL, and to reproduce the TDFL recorded with high reliability and its A playback device is provided.

  Still another problem to be solved by the present invention is to provide a write-once information recording medium that records TDFL with high reliability and improves the utilization of an area allocated for recording TDFL. .

  In order to solve the above-described problem, a method of recording TDFL on a write-once information recording medium according to the present invention uses a TDFL generated during data recording on the write-once information recording medium. Recording in at least one cluster, verifying whether a defect has occurred in the at least one cluster, recording data recorded in the cluster in which the defect has occurred in another cluster, and recording by the TDFL Recording pointer information indicating the position of at least one cluster on the write-once information recording medium.

  The TDFL preferably includes position information of a defect cluster in which a defect has occurred and position information of a substitute cluster for replacing the defect cluster.

  The pointer information may include information indicating the position of the other cluster instead of the cluster in which the defect has occurred.

  The pointer information is preferably included in temporary disk management information, and the TDFL and the temporary disk management information are preferably recorded in a TDMA provided in the write-once information recording medium.

  In order to solve the above problems, a data recording apparatus according to the present invention includes a recording / reading unit for recording / reading data on a write-once information recording medium, and a defect generated during data recording on the write-once information recording medium. The recording / reading unit is controlled to record the TDFL for management in at least one cluster of the write-once information recording medium, and whether or not a defect has occurred in the at least one cluster is verified. Controlling the recording / reading unit to record the data recorded in the cluster in which the defect has occurred in another cluster, and pointer information indicating the position of at least one cluster in which the TDFL is recorded, And a control unit for controlling the recording / reading unit to record the information on the information recording medium.

  The TDFL preferably includes position information of a defect cluster in which a defect has occurred and position information of a substitute cluster for replacing the defect cluster.

  The pointer information may include information indicating the position of the other cluster instead of the cluster in which the defect has occurred.

  The pointer information is preferably included in temporary disk management information, and the TDFL and the temporary disk management information are preferably recorded in a TDMA provided in the write-once information recording medium.

  In order to solve the other problems, a method of reproducing a TDFL recorded on a write-once information recording medium according to the present invention includes: pointer information indicating a position where the TDFL is recorded from the write-once information recording medium. And obtaining at least one cluster in which the TDFL is recorded and reading the TDFL according to the obtaining step and the pointer information.

  The pointer information may be information indicating a position of at least one cluster where the TDFL is recorded.

  The pointer information may be information indicating a position of each of the at least one cluster.

  In addition, when the TDFL is recorded, if a defect occurs in at least one cluster and data is recorded in another cluster, the pointer information is stored in the other cluster instead of the defective cluster in which the defect has occurred. It is desirable to include information indicating the location of the cluster.

  The TDFL preferably includes position information of a defect cluster in which a defect has occurred and position information of a substitute cluster for replacing the defect cluster.

  The pointer information is preferably included in temporary disk management information, and the TDFL and the temporary disk management information are preferably recorded in a TDMA provided in the write-once information recording medium.

  In order to solve the other problems, in the data reproducing apparatus according to the present invention, the data recorded on the write-once information recording medium is recorded for defect management from the reading unit that reads the data recorded on the write-once information recording medium. The reading unit is controlled to read pointer information indicating a position where the TDFL is recorded, and the pointer information output from the reading unit is used to access at least one cluster in which the TDFL is recorded, and A control unit is provided for controlling the reading unit so as to read the TDFL.

  The pointer information may be information indicating a position of at least one cluster where the TDFL is recorded.

  The pointer information may be information indicating a position of each of the at least one cluster.

  When the TDFL is recorded, if a defect occurs in at least one cluster and data is recorded in another cluster, the pointer information is stored in the other cluster instead of the defective cluster in which the defect occurs. It is desirable to include information indicating the position.

  The TDFL preferably includes position information of a defect cluster in which a defect has occurred and position information of a substitute cluster for replacing the defect cluster.

  The pointer information is preferably included in temporary disk management information, and the TDFL and the temporary disk management information are preferably recorded in a TDMA provided in the write-once information recording medium.

  In order to solve the further another problem, the write-once information recording medium according to the present invention includes at least one user data area for recording user data, at least one for replacement when a defect occurs in the user data area. One spare area, a TDFL for defect management, and at least one TDMA for recording pointer information indicating a position of at least one cluster in which the TDFL is recorded are provided.

  The TDFL may include position information of a defective cluster in a user data area where a defect has occurred and position information of a replacement cluster in the spare area for replacing the defective cluster.

  In addition, when the TDFL is recorded in at least one cluster of the TDMA, when the defect occurs in the at least one cluster and the data is recorded in another cluster, the defect occurs in the pointer information. It is desirable to include information indicating the position of the other cluster instead of the defective cluster.

  The pointer information is preferably included in temporary disk management information.

  According to the present invention, the area of the write-once information recording medium can be used more efficiently, and TDFL can be recorded and reproduced with higher reliability.

It is a figure which shows the structure of the write-once type information recording medium by one Embodiment of this invention. 1 is a block diagram of a recording and / or playback apparatus according to an embodiment of the present invention. 5 is a flowchart of a TDFL recording method according to an embodiment of the present invention. It is a figure for demonstrating in more detail the process which produces | generates TDFL by the verification process after recording. FIG. 3 illustrates an embodiment of a TDFL. It is a figure which shows 1st Embodiment of the verification method after recording of TDFL. It is a figure which shows 2nd Embodiment of the verification method after recording of TDFL. It is a figure which shows an example of the pointer information which shows the position of TDFL by this invention. 5 is a flowchart of a TDFL reproduction method according to an embodiment of the present invention.

  According to an embodiment of the present invention, when a defective cluster is generated by performing a verification process after recording during TDFL recording, the TDFL can be recorded with high reliability by re-recording in another cluster. Furthermore, even if a defect occurs during TDFL recording, the entire TDFL is not recorded again, but only the data recorded in the defective cluster is re-recorded in the alternative cluster, indicating the position of the cluster where the TDFL is effectively recorded. By including the pointer information in the TDDS and recording it in the TDMA, it is possible to prevent the TDMA from being exhausted quickly.

  Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

  FIG. 1 is a diagram showing the structure of a write-once information recording medium 100 according to an embodiment of the present invention. The write-once information recording medium 100 shown in FIG. 1 is a write-once information recording medium having a single recording layer, and the recording layer is provided with a lead-in area, a data area, and a lead-out area. Yes.

  In the lead-in area, there are provided DMA1 (disk management area 1), DMA2, Primary TDMA, recording condition test area, and Drive Information Area. In the data area, when a defective cluster occurs in the user data area, a spare area 1, a spare area 2, a secondary TDMA, and a user data area for replacing the defective cluster are provided. In the lead-out area, areas such as DMA3 and DMA4 are provided.

  In Primary TDMA and Secondary TDMA, TDFL and TDDS (Temporary Disc Definition Structure) are recorded. The TDDS includes recordable position information in the recording condition test area, write protection information, position and / or size information of the spare area allocated to the data area. In particular, in the present embodiment, the TDDS includes pointer information indicating the position of the TDFL. Pointer information indicating the positions of the TDDS and the TDFL will be described later.

  TDFL and TDDS are recorded first in Primary TDMA. When all the Primary TDMAs are exhausted, the TDFL and TDDS are recorded in the Secondary TDMA. The Secondary TDMA provided in the data area may or may not be assigned by a user command or data recording and / or playback device command. This is because the medium can be used more effectively by the user or the producer of the data recording and / or reproducing apparatus.

  When the write-once information recording medium is loaded, the data recording and / or reproducing apparatus performs initialization for use of the write-once information recording medium. That is, the information in the lead-in area and / or the lead-out area is read to grasp how the medium is managed and how it is recorded or reproduced. As the amount of information recorded in the lead-in area and / or the lead-out area increases, the time required to prepare for recording or reproduction after loading the medium increases. In order to solve this problem, the concepts of TDDS and TDFL were introduced.

  That is, before the write-once information recording medium is finalized, TDFL and TDDS are updated and recorded in TDMA. When the medium is finalized, finally meaningful TDFL and TDDS are stored in DMA. Record as DFL and DDS. Further, by recording TDFL and TDDS that are finally meaningful in the DMA, a recordable information recording medium can be reproduced even by a re-recordable medium reproducing apparatus.

  FIG. 2 is a block diagram of a data recording and / or reproducing apparatus according to an embodiment of the present invention. As shown in FIG. 2, the apparatus according to the present embodiment includes a recording / reading unit 1, a control unit 2, and a memory 3. The write once information recording medium 100 has the structure of the write once information recording medium having a single recording layer shown in FIG.

  The recording / reading unit 1 records and / or reproduces data on the write-once information recording medium 100 under the control of the control unit 2. When recording the data, the recorded data is read again after the recording in order to verify the recorded data.

  The control unit 2 controls the overall operation of the data recording and / or reproducing apparatus according to the present embodiment. Furthermore, the control unit 2 records and / or reproduces data on the write-once information recording medium 100 to generate an updated TDFL and records it on the TDMA provided on the write-once information recording medium 100, Defect management is performed by recording a TDDS including pointer information indicating the location of the updated TDFL in the TDMA.

  The memory 3 stores the finally updated TDFL and TDDS read from the write-once information recording medium 100 at the time of initialization for use of the write-once information recording medium 100. Next, by performing user data recording and defect management process, the control unit 2 stores, in the TDFL stored in the memory 3, the position information of the new defect cluster and the position information of the alternative cluster corresponding to the defect cluster. The generated updated TDFL is generated and then recorded in the TDMA, and pointer information indicating the position where the updated TDFL is recorded is recorded in the TDMA.

  Hereinafter, a method for recording TDFL on a write-once information recording medium according to an embodiment of the present invention performed by the data recording and / or reproducing apparatus shown in FIG. 2 will be described.

  FIG. 3 is a flowchart of a TDFL recording method according to an embodiment of the present invention.

  Although not shown, when the write-once information recording medium 100 is loaded into the data recording and / or reproducing apparatus, initialization for use of the write-once information recording medium 100 is performed. That is, the control unit 2 reads the TDFL and TDDS finally updated from the write-once information recording medium 100 and stores them in the memory 3.

  Next, when user data is input to the write-once information recording medium 100 from a host (not shown) together with a user data recording command, the control unit 2 records the user data on the write-once information recording medium 100 in a predetermined unit. After that, a “verification process after recording” is performed to verify the recorded data.

  The data recording and / or reproducing apparatus, after completing a predetermined time interval or one data recording operation during data recording, stores the new defect cluster position information and the defect cluster in the TDFL stored in the memory 3. An updated TDFL including the position information of the corresponding alternative cluster is generated and recorded in the TDMA, and a TDDS including pointer information indicating a position where the updated TDFL is recorded is recorded in the TDMA.

  FIG. 4 is a diagram for explaining in more detail the process of generating a TDFL by the verification process after recording. Here, data processing units are divided into sectors and clusters. A sector means a minimum unit that can manage data by a computer file system or an application program, and a cluster means a minimum unit that can be physically recorded on a disk at one time. Generally, one or more sectors constitute a cluster.

  The sector is divided again into a physical sector and a logical sector. The physical sector means a space for recording data of one sector amount on the disk. An address for searching for a physical sector is called a physical sector number (physical sector number: PSN). The logical sector refers to a sector unit for managing data by a file system or an application program, and similarly, a logical sector number (logical sec. Number: LSN) is given.

  The data recording and / or reproducing apparatus uses a PSN to find a position on the write-once information recording medium 100 of data that must be recorded / reproduced, and in a computer or application program for recording / reproducing data, The entire data is managed in units of logical sectors, and the location of the data is also searched by LSN. The relationship between the LSN and the PSN is mapped by the control unit 2 using the defect or the recording start position.

  As shown in FIG. 4, A means a user data area, and B means a spare area. In the user data area A and the spare area B, there are a plurality of physical sectors (not shown) to which PSNs are sequentially assigned. The LSN is assigned in units of at least one physical sector. However, since the LSN is assigned including the spare area B except for the defective area generated in the user data area A where the defect has occurred, the physical sector and the logical sector are assumed to have the same size. Even if a defective area occurs, PSN and LSN do not match.

  A method for recording user data in the user data area A is based on a continuous recording mode or a random recording mode. The continuous recording mode is a mode in which user data is sequentially recorded continuously, and the random recording mode is a mode in which the user data is not necessarily continuously recorded but is randomly recorded. (1) to (7) indicate units in which the verification work after recording is performed.

  The data recording and / or reproducing apparatus records the user data for the section (1) and then returns to the beginning of the section (1) to confirm whether the data is recorded correctly or whether a defect has occurred. If a cluster in which a defect has occurred is found, that cluster is designated as a defect cluster, and defect # 1, which is a defect region, is designated as shown in FIG.

  Further, the data recording and / or reproducing apparatus records the data recorded in the defect # 1 again in the spare area. The portion where the data recorded in the defect # 1 is re-recorded is called a substitute # 1. Next, the data recording and / or reproducing apparatus records the user data for the section (2) and then returns to the beginning of the section (2) to check whether the data is recorded correctly or a defect has occurred. . If at least one cluster in which a defect has occurred is found, that part is designated as defect # 2. In a similar manner, alternative # 2 corresponding to defect # 2 is generated. Further, in the section (3), the defect # 3 and the alternative # 3, which are defect areas, are generated. In the section (4), no defective area is found because no defective part is found.

  After recording and verifying section (4), if recording operation # 1 is predicted to end (if the user presses the eject button or the recording of user data assigned to the recording operation is complete) The data recording and / or reproducing device stores the position information of the defects # 1, # 2, and # 3, which are defect areas generated in the sections (1) to (4), in the previous TDFL stored in the memory 3, and TDFL # 1 is generated in which the location information of alternatives # 1, # 2, and # 3, which are alternative areas, is updated.

  When the recordable information recording medium 100 is loaded again into the data recording and / or reproducing apparatus, the control unit 2 reads the TDFL # 1 previously recorded from the recordable information recording medium 100 and stores it in the memory 3. To do. Next, when recording operation # 2 starts, data is recorded in the same manner as in the case of recording operation # 1 described above, and defect management is performed.

  That is, in the recording operation # 2, the verification process after the user data recording is performed in the sections (5) to (7), and the defect # 4, the defect # 5, the alternative # 4, and the alternative # 5 are generated. When the recording operation # 2 is completed, the data recording and / or reproducing device replaces the previous TDFL # 1 stored in the memory 3 with the position information of the defect # 4 and the defect # 5 and the respective replacement areas. TDFL # 2 in which the position information of # 4 and alternative # 5 is updated is generated.

  FIG. 5 is a diagram illustrating an embodiment of a TDFL. As shown in FIG. 5, the first column of the TDFL includes information indicating the positions of the entire defect clusters existing in the write-once information recording medium 100, and the second column includes the respective defect clusters. The information indicating the position of the alternative cluster corresponding to is included. In this embodiment, the position of the defective cluster or the position of the alternative cluster is indicated by using the PSN of the first sector of each cluster. However, it can also be indicated by using the PSN of the last sector of each cluster or an index indicating each cluster.

  As shown in FIG. 3 again, when the TDFL is generated as described above, the control unit 2 verifies the generated TDFL after recording it in at least one cluster of TDMA (step 510). As a result of the verification, if a defective cluster occurs among the clusters in which the TDFL is recorded, the control unit 2 re-records the data recorded in the defective cluster in another cluster of TDMA (step 530).

  Two embodiments relating to a verification method after TDFL recording will be described.

  FIG. 6 is a diagram showing a first embodiment of a verification method after TDFL recording. According to this embodiment, when a plurality of cluster amounts of TDFL are recorded in TDMA, verification is performed after recording the entire TDFL.

  As shown in FIG. 6, when the size of the TDFL is the amount of three clusters, the result of the verification after recording the TDFL in the first cluster 210, the second cluster 230, and the third cluster 250, A case where a defect occurs in the cluster 230 of FIG. The data recorded in the second cluster 230 is re-recorded in the cluster 270 next to the third cluster 250. If the re-recorded cluster 270 is verified and it is determined that there is no defect, the TDFL recording is terminated, pointer information indicating the position of each cluster where the TDFL is recorded is included in the TDDS, and then the TDDS is converted into the TDMA. Record. At this time, the pointer information includes pointers indicating the positions of the clusters 210 and 250 in which no defect has occurred at the time of the first recording and the alternative cluster 270 in which the defective cluster is replaced.

  FIG. 7 is a diagram showing a second embodiment of the verification method after recording the TDFL. According to the present embodiment, when a plurality of cluster amounts of TDFL are recorded in TDMA, unlike the first embodiment, the process of verifying after recording the TDFL is performed on a cluster basis.

  As shown in FIG. 7, when the size of the TDFL is an amount corresponding to three clusters, as a result of recording and verifying the first cluster 310, no defect has occurred. As a result of verification after recording the second cluster 330, it is determined that a defect has occurred, and the data recorded in the second cluster 330 is re-recorded in the cluster 350 next to the second cluster 330. If the re-recorded cluster 350 is verified and it is determined that there is no defect, the TDFL is recorded in the third cluster 370 and verified. If the third cluster 370 is verified and it is determined that there is no defect, TDFL recording is terminated, pointer information indicating the position of each cluster where the TDFL is recorded is included in the TDDS, and then the TDDS is recorded in the TDMA. To do. Similar to the first embodiment, the pointer information includes pointers indicating the positions of the clusters 310 and 370 in which no defect has occurred at the time of first recording and the replacement cluster 350 in which the defective cluster is replaced.

  FIG. 8 is a diagram showing an example of pointer information indicating the position of the TDFL according to the present invention. The pointer information shown in FIG. 8 includes k pointers 410, 430, and 450. The data recording and / or reproducing apparatus reproduces the pointer information shown in FIG. 8 so that the TDFLs are sequentially recorded in k clusters, and the positions of the k clusters can be known.

  In the present embodiment, the nth cluster pointer (n is an integer from 1 to k) of the TDFL has a size of 4 bytes. The pointer information is included in the above-described TDDS. That is, the TDDS includes pointer information indicating the position of the TDFL, recordable position information of the recording condition test area, write protection information, position and / or size information of the spare area assigned to the data area, and the like.

  Since the TDDS must include pointer information indicating the position of the TDFL, the TDDS must always be recorded in the TDMA after the TDFL is recorded.

  As described above, according to the TDFL recording method and apparatus of the present invention, if a defective cluster is generated by performing a verification process after recording during TDFL recording, the TDFL is increased by re-recording in another cluster. Can be recorded with confidence. Furthermore, even if a defect occurs during TDFL recording, the entire TDFL is not recorded again, but only the data recorded in the defective cluster is re-recorded in the alternative cluster, indicating the position of the cluster where the TDFL is effectively recorded. By including the pointer information in the TDDS and recording it in the TDMA, it is possible to prevent the TDMA from being exhausted quickly.

  Hereinafter, an embodiment of a TDFL reproducing method and apparatus according to the present invention will be described.

  The data reproducing apparatus according to the present embodiment uses the data recording and / or reproducing apparatus shown in FIG. However, in the case of a reproduction-only device, the recording / reading unit 1 and the control unit 2 perform only a data reading function.

  FIG. 9 is a flowchart of a TDFL playback method according to an embodiment of the present invention. Although not shown, if the write-once information recording medium 100 on which user data, TDFL, and TDDS are recorded is loaded into the data recording and / or reproducing apparatus by the method described above, the control unit 2 Initialize for use. That is, data necessary for use and management of the write-once information recording medium 100 is read from the write-once information recording medium 100.

  In particular, after searching and reading the finally updated TDDS, pointer information indicating the position of the finally updated TDFL is obtained from the finally updated TDDS (step 610). The pointer information indicating the position of the finally updated TDFL has a structure as shown in FIG.

  Since the controller 2 knows the position of the cluster in which the finally updated TDFL is recorded and the order in which the TDFL is recorded in each cluster from the pointer information, the controller 2 reads the finally updated TDFL (step 630). The control unit 2 stores the finally updated TDDS and TDFL read from the write-once information recording medium 100 in the memory 3. The control unit 2 can reproduce the user data recorded on the write-once information recording medium 100 without error with reference to the TDDS and TDFL stored in the memory 3.

  The present invention can also be embodied as computer-readable code on a computer-readable recording medium. Computer readable recording media include all types of recording devices that can store data that can be read by a computer system. Examples of computer-readable recording media include ROM, RAM, CD-ROM, magnetic tape, floppy disk, optical data storage device, etc., and carrier wave (for example, transmission through the Internet). Including those embodied in form. The computer-readable recording medium can be distributed in a computer system connected to a network, and computer-readable code can be stored and executed in a distributed manner.

  So far, the present invention has been described with a focus on preferred embodiments thereof. Those skilled in the art will appreciate that the present invention can be embodied in modified forms without departing from the essential characteristics of the invention. The scope of the present invention is shown not by the above description but by the claims, and all differences within the equivalent scope should be construed as being included in the present invention.

  Hereinafter, the means taught by the present invention will be listed as an example.

(Section 1)
In a temporary defect list recording method for defect management on a write-once information recording medium,
The temporary defect list generated during data recording on the write-once information recording medium is recorded in at least one cluster of the write-once information recording medium, and whether or not a defect has occurred in the at least one cluster. Verifying step;
Recording the data recorded in the cluster where the defect occurred in another cluster;
Recording pointer information indicating a position of at least one cluster in which the temporary defect list is recorded on the write-once information recording medium.

(Section 2)
2. The method according to claim 1, wherein the temporary defect list includes position information of a defect cluster in which a defect has occurred and position information of a replacement cluster for replacing the defect cluster.

(Section 3)
2. The method according to claim 1, wherein the pointer information includes information indicating a position of the other cluster instead of a cluster in which a defect has occurred.

(Section 4)
The temporary defect list recording and verification step includes:
2. The method according to claim 1, which is a step of verifying whether or not a defect has occurred in the at least one cluster after recording the temporary defect list in at least one cluster.

(Section 5)
2. The method according to claim 1, wherein the temporary defect list recording and verification step is performed in units of clusters.

(Section 6)
2. The method according to claim 1, wherein the pointer information is included in temporary disk management information.

(Section 7)
7. The method according to claim 6, wherein the temporary defect list and the temporary disk management information are recorded in a temporary disk management area provided in the write-once information recording medium.

(Section 8)
In an apparatus for recording / reading data on a write-once information recording medium,
A recording / reading unit for recording / reading data on a write-once information recording medium;
Controlling the recording / reading unit to record a temporary defect list for defect management generated during data recording on the write-once information recording medium in at least one cluster of the write-once information recording medium. Verifying whether or not a defect has occurred in the at least one cluster, and controlling the recording / reading unit to record data recorded in the cluster in which the defect has occurred in another cluster, and the temporary defect An apparatus comprising: a control unit that controls the recording / reading unit so as to record pointer information indicating a position of at least one cluster in which the list is recorded on the write-once information recording medium.

(Section 9)
9. The apparatus according to claim 8, wherein the temporary defect list includes position information of a defect cluster in which a defect has occurred and position information of a replacement cluster for replacing the defect cluster.

(Section 10)
9. The apparatus according to claim 8, wherein the pointer information includes information indicating a position of the other cluster instead of a cluster in which a defect has occurred.

(Section 11)
The controller is
9. The apparatus according to claim 8, wherein after the temporary defect list is recorded in at least one cluster, whether or not a defect has occurred in the at least one cluster is verified.

(Section 12)
9. The apparatus according to claim 8, wherein the control unit records and verifies the temporary defect list in units of clusters.

(Section 13)
9. The apparatus according to claim 8, wherein the pointer information is included in temporary disk management information.

(Section 14)
14. The apparatus according to claim 13, wherein the temporary defect list and the temporary disk management information are recorded in a temporary disk management area provided in the write-once information recording medium.

(Section 15)
In a method of reading a temporary defect list recorded for defect management on a write-once information recording medium,
Obtaining pointer information indicating a position where the temporary defect list is recorded from the write-once information recording medium;
Accessing at least one cluster in which the temporary defect list is recorded according to the pointer information, and reading the temporary defect list.

(Section 16)
16. The method according to claim 15, wherein the pointer information is information indicating a position of at least one cluster in which the temporary defect list is recorded.

(Section 17)
17. The method according to claim 16, wherein the pointer information is information indicating a position of each of the at least one cluster.

(Section 18)
When the temporary defect list is recorded, if a defect has occurred in at least one cluster and data is recorded in another cluster, the pointer information may be stored in the other cluster instead of the defect cluster in which the defect has occurred. Item 17. The method according to Item 16, comprising information indicating the position of the cluster.

(Section 19)
16. The method according to claim 15, wherein the temporary defect list includes position information of a defect cluster in which a defect has occurred and position information of a replacement cluster for replacing the defect cluster.

(Section 20)
16. The method according to claim 15, wherein the pointer information is included in temporary disk management information.

(Section 21)
21. The method according to claim 20, wherein the temporary defect list and the temporary disk management information are recorded in a temporary disk management area provided in the write-once information recording medium.

(Section 22)
In an apparatus for recording / reading data on a write-once information recording medium,
A reading unit for reading data recorded on a write-once information recording medium;
The reading unit is controlled to read pointer information indicating a position where a temporary defect list recorded for defect management is recorded from a write-once information recording medium, and the pointer information output from the reading unit is used to control the reading unit. And a control unit that controls the reading unit to access at least one cluster in which the temporary defect list is recorded and to read the temporary defect list.

(Section 23)
23. The apparatus according to claim 22, wherein the pointer information is information indicating a position of at least one cluster in which the temporary defect list is recorded.

(Section 24)
24. The apparatus according to claim 23, wherein the pointer information is information indicating a position of each of the at least one cluster.

(Section 25)
When the temporary defect list is recorded, if a defect has occurred in at least one cluster and data is recorded in another cluster, the pointer information may be stored in the other cluster instead of the defect cluster in which the defect has occurred. 24. The apparatus according to item 23, including information indicating a position of the cluster.

(Section 26)
23. The apparatus according to claim 22, wherein the temporary defect list includes position information of a defect cluster in which a defect has occurred, and position information of a replacement cluster for replacing the defect cluster.

(Section 27)
23. The apparatus according to item 22, wherein the pointer information is included in temporary disk management information.

(Section 28)
28. The apparatus according to claim 27, wherein the temporary defect list and the temporary disk management information are recorded in a temporary disk management area provided in the write-once information recording medium.

(Section 29)
In a write-once information recording medium used for a recording / reproducing apparatus,
At least one user data area for recording user data;
At least one spare area for replacement when a defect occurs in the user data area;
And a temporary defect list for defect management, and at least one temporary disk management area for recording pointer information indicating a position of at least one cluster in which the temporary defect list is recorded. Type information recording medium.

(Section 30)
Item 29. The temporary defect list includes location information of defect clusters in a user data area where a defect has occurred, and location information of replacement clusters in the spare area for replacement of the defect clusters. Write-once information recording medium.

(Section 31)
When the temporary defect list is recorded in at least one cluster of the temporary disk management area, when the defect occurs in the at least one cluster and data is recorded in another cluster, the pointer information is 30. The write-once information recording medium according to item 29, including information indicating a position of the other cluster in place of a defective cluster in which a defect has occurred.

(Section 32)
30. The write-once information recording medium according to item 29, wherein the pointer information is included in temporary disk management information.

(Section 33)
A temporary defect list generated during data recording is recorded on at least one cluster of the write-once information recording medium, and it is verified whether or not a defect has occurred in the at least one cluster. And steps to
Recording the data recorded in the cluster where the defect occurred in another cluster;
Recording the pointer information indicating the position of at least one cluster in which the temporary defect list is recorded on the write-once information recording medium. A computer-readable recording medium having recorded thereon a program for realizing a method for recording a temporary defect list for recording.

(Section 34)
Obtaining pointer information indicating a position where the temporary defect list is recorded from a write-once information recording medium;
The defect management recorded on the write-once information recording medium, comprising: accessing at least one cluster in which the temporary defect list is recorded according to the pointer information, and reading the temporary defect list. A computer-readable recording medium storing a program for realizing a method for reading a temporary defect list for a computer.

(Section 35)
In a method for managing a temporary defect list for user data stored in a recording medium,
A temporary defect list management method comprising a step of performing a post-recording verification process while recording the temporary defect list in the temporary defect management area of the recording medium in cluster units.

(Section 36)
The post-recording verification process execution step includes:
Storing the temporary defect list in a single unit in a continuous cluster of the temporary defect management area;
When a single unit in which the temporary defect list is recorded is verified and a defect exists in one of the clusters of the temporary defect management area corresponding to a part of the temporary defect list, the next to the temporary defect management area 36. The temporary defect list management method according to claim 35, comprising: recording and verifying the portion of the cluster.

(Section 37)
37. The temporary defect list management method according to claim 36, further comprising a step of storing pointer information indicating a position of the temporary defect management area in which the temporary defect list is recorded.

(Section 38)
38. The temporary defect list management method according to claim 37, wherein the pointer information points to a cluster of the temporary defect management area including the temporary defect list.

(Section 39)
38. The temporary defect list management method according to claim 37, further comprising the step of storing the pointer information in a temporary disk definition structure stored in the temporary defect management area.

(Section 40)
40. The temporary defect management area according to claim 39, wherein when the temporary defect management area is full, the temporary defect list and the temporary disk definition structure are stored in a second temporary defect management area on the recording medium. How to manage the temporary defect list.

(Section 41)
41. The temporary defect list management method according to claim 40, wherein the temporary defect list is stored in the temporary defect management area before the temporary disk definition structure.

(Section 42)
42. The temporary defect list management method according to item 41, wherein the recording medium is a one-time recording optical disk.

(Section 43)
43. The temporary defect list management method according to item 42, wherein the one-time recording optical disk is a single recording layer disk.

(Section 44)
The post-recording verification process execution step includes:
Recording the temporary defect list in order of increasing single clusters of the temporary defect management area;
When a single cluster is recorded, verify the increment of each single cluster, and when a defect is located in the single cluster in the temporary defect management area corresponding to a portion of the temporary defect list, the temporary defect management 36. The method for managing a temporary defect list according to claim 35, further comprising: recording and verifying the part of the temporary defect list in a next cluster of a region.

(Section 45)
45. The temporary defect list management method according to claim 44, further comprising a step of storing pointer information indicating a position of the temporary defect management area in which the temporary defect list is recorded.

(Section 46)
46. The temporary defect list management method according to claim 45, wherein the pointer information simply points to a cluster of the temporary defect management area including the temporary defect list.

(Section 47)
46. The temporary defect list management method according to claim 45, further comprising the step of storing the pointer information in a temporary disk definition structure stored in the temporary defect management area.

(Section 48)
48. The temporary defect management area according to claim 47, wherein when the temporary defect management area becomes full, the temporary defect list and the temporary disk definition structure are stored in a second temporary defect management area on the recording medium. How to manage the temporary defect list.

(Section 49)
49. The temporary defect list management method according to claim 48, wherein the temporary defect list is stored in the temporary defect management area before the temporary disk definition structure.

(Section 50)
Item 52. The temporary defect list management method according to Item 49, wherein the recording medium is a one-time recording optical disk.

(Section 51)
51. The temporary defect list management method according to item 50, wherein the one-time recording optical disk is a single recording layer disk.

(Section 52)
In a method for managing a temporary defect list for user data stored in a write-once information recording medium,
When a defect area occurs during data recording, in the temporary defect management area of the write-once information recording medium, only the data about a single cluster corresponding to the defect area is recorded in the replacement area. A method for managing a temporary defect list, comprising the step of performing a post-recording verification process during recording of the temporary defect list.

(Section 53)
53. The temporary defect list management method according to item 52, wherein the defect area and the replacement area are displayed by physical sector numbers.

(Section 54)
54. The temporary defect list management method according to claim 53, wherein the physical sector number corresponds to the first sector of the defective area and the first sector of the alternative area.

(Section 55)
54. The temporary defect list management method according to item 53, wherein the physical sector number corresponds to the last sector of the defective area and the last sector of the replacement area.

(Section 56)
54. The temporary defect list management method according to item 53, wherein the index indicates each defect area and replacement area.

1 Recording / reading unit
2 Control unit
3 memory
100 Write-once information recording media

Claims (6)

A method of recording a temporary defect list for defect management on a write-once information recording medium,
The temporary defect list generated when data is recorded on the write-once information recording medium is recorded in at least one cluster in the temporary disk management area of the write-once information recording medium, and the at least one Verifying whether defects are detected in the cluster;
Recording the data recorded in the at least one cluster in another cluster of the temporary disk management area;
A step of recording a temporary disk definition structure having pointer information in the temporary disk management area, wherein the pointer information is a location of the other cluster in which the temporary defect list is recorded in the write-once information recording medium; Showing steps, and
Recording the temporary disk definition structure and the temporary defect list recorded in the temporary disk management area in the disk management area of the write-once information recording medium when the write-once information recording medium is updated. How to have.   2. The method according to claim 1, wherein the temporary defect list includes position information of a defective cluster and position information of an alternative cluster instead of the defective cluster.   The method according to claim 1, wherein recording and verification of the temporary defect list is performed in units of clusters. A method for reading a temporary defect list for defect management recorded on a write-once information recording medium,
A step of reading a temporary disk definition structure from a temporary disk management area of the write-once information recording medium, wherein the temporary disk definition structure is recorded when the write-once information recording medium is updated. Steps recorded in the disc management area of the medium;
Obtaining pointer information indicating a location where the temporary defect list is recorded from the temporary disk definition structure;
Using the pointer information to access another cluster in which the temporary defect list is recorded, wherein the other cluster is an alternative in which data in place of at least one cluster is recorded. A method, wherein the temporary defect list is recorded in the at least one cluster, and the at least one cluster is detected to be defective when the at least one cluster is verified.   The method of claim 4, wherein the pointer information individually specifies the location of each cluster.   2. The method according to claim 1, wherein the temporary defect list includes position information of a defective cluster and position information of an alternative cluster instead of the defective cluster.

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