JP4842837B2 - Data recording device and method for write-once disc, data reproducing device and method, and write-once disc - Google Patents

Description

  The present invention relates to the field of recording / reproducing information on / from a write-once disc, and more specifically, recording access information on a write-once disc for faster access to information necessary for using the write-once disc. The present invention relates to an apparatus, a method thereof, and a write-once disk thereof.

  In the case of a rewritable disc, new information can be re-recorded in a portion where information has already been recorded. However, in the case of a write-once disc, once the information is recorded, it cannot be re-recorded after being deleted, so in order to update the already recorded information, a new position must be allocated and recorded. .

  Actually, in most cases, only information that is finally updated is meaningful as information that is updated. Therefore, the update area is allocated to the data area, and the disk drive searches the area where the updated information is recorded to retrieve the last updated information in order to reproduce the last updated information. . Furthermore, if a lot of information is recorded in the area to be searched, it takes a lot of time to obtain the desired information.

  On the other hand, in the case of a write-once disc that implements defect management by a drive, information for defect management for a defect that occurred during use of the write-once disc and information indicating the recording status of the write-once disc are recorded. An area is provided. Due to the characteristics of write-once media, if updates such as information related to defect management are requested, the updated information cannot be re-recorded at the location where the existing information was recorded, as with a re-recordable disc. Since the updated information must be recorded in a vacant position where no data is recorded, a relatively large update area is required. In general, an update area is assigned to a lead-in area or a lead-out area. However, in order to increase the number of updates from time to time, the update area can also be assigned to a data area by user selection.

  The final update information necessary for using the write-once disc is recorded in the update area assigned to the data area, and the final update information includes information that the update area is assigned to the data area. If the location information of the update area is included, the drive will not obtain the last updated information even if it searches the update area provided in the lead-in area or lead-out area. There is a problem that you do not know where the updated information is recorded.

  Therefore, the technical problem to be solved by the present invention is a write-once type in which information is recorded in a data structure that can further shorten the access time for reproducing updated information necessary for use of the write-once disc. There is a disc to be provided.

  Another technical problem to be solved by the present invention is to provide a data recording method and apparatus capable of further reducing the access time for reproducing updated information necessary for use of a write-once disc. It is in.

  Still another technical problem to be solved by the present invention is to provide a data reproducing method and apparatus capable of further reducing the access time for reproducing updated information necessary for using a write-once disc. By the way.

The technical problem as described above corresponds to temporary defect information (TDFL) including information indicating where a defect has occurred in a write-once disc having at least one recording layer according to the present invention. A plurality of temporary disk management areas (TDMA) including temporary defect management information (TDDS) including a position pointer that indicates a position where the temporary defect information (TDFL) is recorded, and the plurality of temporary disk management areas (TDMA) finally shows the information indicating the updated temporary defect management information (TDDS) is recorded temporary disc management area (TDMA), and the final temporary defect management information updated (TDDS) is recorded When the recorded temporary disk management area (TDMA) is changed, the write-once disk is used. At least one approach information area approach information to be updated is recorded, is achieved by a disc, characterized in including it.

According to another aspect of the present invention, there is provided an apparatus for recording data on a write-once disc, a recording / reproducing unit for recording / reproducing information on / from the disc, and the disc Temporary defect management information (TDDS) to be updated is recorded in one of the plurality of temporary disk management areas (TDMA), and the temporary defect management finally updated in the plurality of temporary disk management areas (TDMA). A control unit that controls the recording / reproducing unit so as to record access information for notifying a temporary disc management area (TDMA) in which information (TDDS) is recorded in at least one access information area provided on the disc; The temporary defect management information (TDDS) includes temporary defect information (TDF) including information indicating where a defect has occurred. ), And the corresponding includes position pointer indicating the position where the temporary defect information (TDFL) is recorded, wherein, extraordinary disc the final temporary defect management information updated (TDDS) is recorded management area to record the approach updated information indicating the change has been temporary disc management area (TDMA) when (TDMA) is changed, the apparatus characterized by controlling the recording / reproducing unit Is also achieved.

According to another aspect of the present invention, a temporary disk management area in which finally updated temporary defect management information (TDDS) is recorded among a plurality of temporary disk management areas (TDMA) according to another aspect of the present invention. (TDMA) information is updated and updated by a device that uses a write-once disc when the temporary disc management area (TDMA) in which the finally updated temporary defect management information (TDDS) is recorded is changed. In the write-once disc playback device in which the access information is recorded, the playback unit for playing back the data recorded on the disc and the at least one access information area provided on the disc are finally updated. The reproducing unit is controlled so as to obtain approach information, and a plurality of events provided on the disc are determined from the approach information. A control unit for obtaining information on the temporary disk management area (TDMA) in which the finally updated temporary defect management information (TDDS) is recorded in the disk management area (TDMA), and the temporary defect management information (TDDS) ) has a characteristic defect temporary defect information including the information indicating whether the area associated with the message generator (TDFL), and said corresponding temporary defect information (TDFL) including that the position pointer indicating the position is recorded Achieved by the device to do.

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

  1A and 1B are diagrams showing the structure of a write-once disc according to an embodiment of the present invention. FIG. 1A is a diagram showing the structure of a write-once disc with a single recording layer, and FIG. FIG. 4 is a diagram showing the structure of a dual recording layer write-once disc.

  A write-once disc with a single recording layer is provided with a lead-in area, a data area, and a lead-out area sequentially from the inner circumference to the outer circumference.

  The first recording layer L0 and the second recording layer L1 of the dual recording layer write-once disc are sequentially provided with an inner area, a data area, and an outer area from the inner circumference to the outer circumference.

  FIG. 2 is a view showing a more detailed structure of a single recording layer write-once disc according to an embodiment of the present invention. As shown in FIG. 2, the lead-in area includes a first disk management area (Disc Management Area 1: DMA1), a second disk management area (DMA2), a first temporary disk management area (Temporary Disc Management Area 1: TDMA1), An AIA and a recording condition test area are provided. In the lead-out area, a third disk management area (DMA3), a fourth disk management area (DMA4), and the like are provided. Further, at least one of a temporary defect management area, a recording condition test area, and an AIA can be further provided in the lead-out area. In short, at least one AIA, DMA, TDMA, and recording condition test area may exist in at least one of the lead-in area and the lead-out area.

  3A and 3B are diagrams illustrating a more detailed structure of a dual recording layer write-once disc according to an embodiment of the present invention, and FIG. 3A is a diagram illustrating a structure of the recording layer L0. FIG. 3B is a diagram showing the structure of the recording layer L1. The structure of the recording layer L0 shown in FIG. 3A is the same as the structure of the single recording layer write-once disc shown in FIG. The structure of the recording layer L1 shown in FIG. 3B is similar to the structure of the recording layer L0. However, no AIA is provided in the second inner area, and two TDMAs are provided in the second data area. There is a difference in being provided.

The write-once disc according to the present embodiment is provided with five TDMAs TDMA1 to TDMA5. The positions and sizes of TDMA1 and TDMA2 are areas already known by the recording device and / or the playback device. However, TDMA3, TDMA4, and TDMA5 are assigned to data areas by the user or recording device and / or playback device at the time of initialization of the disc for use of the write-once disc. Then, when recording TDMS to TDMA1, TDDS including TDMA size and position information assigned to the data area is recorded in the TDMA1.

  4A and 4B are diagrams showing a more detailed structure of a dual recording layer write-once disc according to another embodiment of the present invention, and FIG. 4A is a diagram showing a structure of the recording layer L0. 4B is a diagram showing the structure of the recording layer L1. TDMA1, TDMA2, and TDMA5 are assigned to the write-once disc with a dual recording layer shown in FIGS. 4A and 4B. That is, the dual recording layer write-once disc represents a write-once disc in which only TDMA 5 is assigned to the data area 2 by the user or the recording device and / or the playback device at the time of disc initialization for use of the disc. .

  The following describes each area such as TDMA provided on the write-once disc and the process of recording data in each area.

  The TDMA is an area for recording temporary management information (TDMS) for managing the write-once disc before finalization of the write-once disc. Finalization of the write-once disc refers to an operation that prevents any more data from being recorded on the write-once disc. If no more data is recorded on the write-once disc or additional data cannot be recorded, depending on the user's selection, the write-once disc is finalized.

  The TDMS includes temporary defect information (Temporary Defect List: TDFL), temporary defect management information (Temporary Disc Defect Structure: TDDS), and a space bit map (Space Bit Map: SBM). The TDFL is composed of information notifying where the defect has occurred and information notifying the newly replaced area. The TDDS is information for managing the TDFL, and is a position pointer that informs the position where the corresponding TDFL is recorded, a position pointer that informs the position where the corresponding space bitmap is recorded, and a spare allocated in the data area. It includes information on the position and size of the area, and information on the position and size of the TDMA assigned in the data area. The SBM is information indicating the data recording state of the write-once disc by a bit map by assigning different bit values to clusters in which data is recorded in cluster units of data recording units and non-recorded clusters. is there.

  If a write-once disc is loaded into a recording device and / or a playback device, the device is required to obtain an updated TDMS, particularly TDDS, quickly for use of the disc.

  Usually, the recording and / or reproducing device reproduces information in the lead-in area and / or the lead-out area when the disc is loaded on the device, how to manage the disc, and how to record or reproduce the disc. Know what to do. The larger the amount of information recorded in the lead-in area and / or the lead-out area, the longer the time it takes to prepare for recording or reproduction after loading the disc. Therefore, the above-described TDMS concept is introduced, and the TDMS generated during data recording or reproduction on the disc is recorded in the TDMA provided in the lead-in area and / or the lead-out area separately from the defect management area.

  When finalizing a write-once disc, TDMS, that is, TDFL and TDDS recorded in TDMA so far, is finally recorded in DMA. This is because, when finalizing a disc, only the meaningful information of TDFL and TDDS updated and recorded multiple times is finally transferred to the DMA, so that the recording or reproducing apparatus can be removed from the defect management area in the future. This is because only meaningful information is finally reproduced, and there is an advantage that information can be accessed for use of the write-once disc more quickly.

  FIG. 5 is a diagram illustrating a process of recording data in the user data area and the spare area according to an embodiment of the present invention. As shown in FIG. 5, A means a user data area, and B means a spare area. A method of recording user data in the user data area is based on a continuous recording mode or a random recording mode. The continuous recording mode is a mode in which user data is continuously recorded in succession, and the random recording mode is a mode in which recording is not necessarily performed continuously but is performed at random. (1) to (7) each represent a unit in which a verification operation after recording is performed.

After recording the user data for the section (1), the recording apparatus returns to the first part of the section (1) to check whether the data has been recorded well or whether a defect has occurred. If a defected part is found, that part is designated as a defect area. Thereby, the defect # 1, which is a defect area, is designated. The recording device rerecords the data recorded in the defect # 1 in the spare area. Portion in which the data that has been recorded in the defect # 1 has been re-recorded is referred to as the alternative # 1. Next, after recording the user data for the section (2), the recording device returns to the first part of the section (2) again to check whether the data has been recorded well or a defect has occurred. To do. If a portion where a defect has occurred is found, that portion is designated as defect # 2. In the same manner, alternative # 2 corresponding to defect # 2 is generated. Also, defect # 3 and alternative # 3 in the defect area are generated in section (3). In the section (4), the part where the defect has occurred is not found, and there is no defect area.

  After recording and verifying up to section (4), if the end of recording operation # 1 is predicted (if the user presses the eject button or the user data recording assigned to the recording operation is completed), the recording device As TDFL # 1, information on defects # 1, # 2, and # 3, which are defect areas generated in the sections (1) to (4), is recorded in the TDMA. Also, management information for managing TDFL # 1 is recorded in TDMA as TDDS # 1. In this embodiment, the recording operation is a unit of work determined by the user's intention, the recording work to be performed, etc. In this embodiment, a write-once disc is loaded on a recording device and predetermined information is recorded. After the work is performed, this represents the time until the write-once disc is unloaded from the recording apparatus.

  When the write-once disc is loaded again, recording operation # 2 starts, the recording condition is tested in the recording condition test area, and data is recorded based on the result. That is, in the recording operation # 2, data is recorded in the same manner as in the recording operation # 1 described above for the sections (5) to (7), and defects # 4 and # 5 and alternatives # 4 and # 5 are generated. Is done. When recording operation # 2 ends, the recording apparatus records information on defects # 4 and # 5 as TDFL # 2. Moreover, it records in TDMA as defect management information # 2 for managing TDFL # 2.

  As shown in FIGS. 2 to 4, when a plurality of TDMAs and spare areas are provided on a write-once disc, the TDMAs or spare areas are used in a predetermined order. For example, the data recording path applied to the dual recording layer disc shown in FIG. 3 is recorded from the first inner region to the first outer region of the recording layer L0 and then from the second outer region of the recording layer L1. In the case of OTP (Opposite Track Path) for recording data in the second inner region of the layer L1, data is recorded from the spare region 1 of the recording layer L0 in the spare region. If all the spare areas 1 are used, the spare areas 2, 3 and 4 are used in this order.

  Similarly, TDMS is recorded from TDMA1 of the recording layer L0. If all TDMA1 are used, TDMS to be updated is recorded in TDMA2 provided in the second inner area of the recording layer L1. If all TDMA2 are also used, TDMS to be updated is recorded in TDMA3 provided in the first data area of the recording layer L0. In the present embodiment, TDMA1 and TDMA2 provided in the inner area of each recording layer are essentially provided in the write-once disc according to the present embodiment. However, the TDMA provided in the data area is an area that may or may not be allocated depending on the user's selection. Therefore, if all data is recorded in the TDMA provided in the inner area of each recording layer, the TDMA assigned to the data area is used.

  When the finally updated TDMS is recorded in the TDMA assigned to the data area and the write-once disc is unloaded from the recording device, the disc is loaded into the recording device again. In order to use this, we must finally get an updated TDMS. However, the TDMS is recorded in the TDMA assigned to the data area, and there is a problem that it is not known whether the TDMA is assigned to the data area until the drive accesses the TDDS in the TDMS.

  Therefore, according to the present invention, in order to solve such a problem, an AIA is separately provided at a predetermined position of the write-once disc. In the AIA, approach information is recorded. The approach information is information indicating a position where update information such as TDMS is recorded.

  The update information is information that should be recognized by the recording and / or reproducing device in order to use the write-once disc at the initial stage when the disc is loaded on the recording and / or reproducing device. An area where update information is recorded is called an update area. In this embodiment, TDMS is typical update information, and TDMA is typical update area.

  As shown in FIGS. 2 to 4, the AIA is preferably provided at a predetermined position in the lead-in area or the inner area. It is also desirable to limit the size of the AIA by minimizing the amount of access information recorded in the AIA and the number of updates. This is because if the size of the AIA is increased or a plurality of AIAs are assigned, the time taken to obtain the access information becomes longer.

  FIG. 6 is a diagram illustrating a data structure of access information (AI) according to the first embodiment of the present invention. The approach information shown in FIG. 6 represents the approach information in the case of the update information TDMS, the update area TDMA, and the dual recording layer write-once disc shown in FIG.

  Further, as shown in FIG. 6, the header of the approach information includes an AIidentifier indicating the approach information and an AI Update count indicating the updated update information.

  The approach information includes the total number of TDMAs provided on the disc, information informing the TDMA in which the final TDDS is recorded, and position information of each TDMA. The position information of each TDMA can be represented by start position and end position information, start position or end position, and size information of each TDMA. As described above, since the TDDS includes a pointer indicating the position of the corresponding TDFL, the approach information includes information indicating the TDMA in which the final TDDS is recorded.

  When the write-once disc according to the present invention is loaded into the drive, the drive approaches the AIA that already knows the position, and finally obtains updated access information, so that the final TDDS is recorded. And the final TDDS information can be obtained. In order to minimize the access time for obtaining the final access information recorded in the AIA, the access information is continuously recorded in the AIA in the continuous recording mode, and the number of updates of the access information is minimized. Is desirable.

  In this embodiment, in order to minimize the number of approach information updates, the approach information is updated when the TDMA in which the final TDDS is recorded changes. Further, when the access information includes the number information of TDMAs allocated to the disk and the position information of each TDMA, the access information is updated even when a new TDMA is allocated or the TDMA position information changes. Further, in order to cope with the case where an error occurs in the recorded approach information, it is desirable to repeatedly record the same approach information.

  Even if the specific address information in which the final TDDS is recorded is not included in the access information, the access information to be updated is continuously recorded from the next of the previous access information. By using a method such as track jumping, the playback apparatus can quickly find the position where the final TDDS is recorded by recognizing the boundary between the recorded area and the unrecorded area. This is because there is a difference between an RF signal obtained from an area where data is recorded and an RF signal obtained from an area where data is not recorded.

  FIG. 7 is a diagram illustrating a data structure of approach information according to the second embodiment of the present invention. The approach information according to the embodiment shown in FIG. 6 includes location information of any TDMA and information indicating the TDMA in which the final TDDS is recorded. However, the approach information according to the present embodiment includes TDMA position information in which the final TDDS is recorded. The location information of the TDMA in which the final TDDS is recorded can be represented by the address of the first physical sector of the first cluster of the TDMA and the address of the first physical sector of the last cluster. However, the present invention is not limited to this, and it goes without saying that the position information of the TDMA in which the final TDDS is recorded can be expressed using various methods.

  FIG. 8 is a diagram showing a data structure of approach information according to the third embodiment of the present invention. The approach information according to the present embodiment is the same as the data structure of TDDS. That is, the data structure of separate approach information is not defined, and TDDS is used as the approach information. In order to use the TDDS as the approach information, as shown in FIG. 8, an information field indicating the position of the TDMA where the final TDDS is recorded must be added to the TDDS.

  FIG. 9 is a diagram showing a data structure of approach information according to the fourth embodiment of the present invention. The access information according to the present embodiment uses the TDDS data structure as it is, as in the third embodiment described above. However, unlike the third embodiment, the TDDS further includes a flag indicating TDMA in which the final TDDS is recorded. In the present embodiment, the flag is composed of a total of 8 bits including 5 bits b0 to b4 representing TDMA in which the final TDDS is recorded and 3 bits b5 to b7 reserved. For example, if b0 to b4 are “00001b”, TDMA1 if “00010b”, TDMA2 if “00100b”, TDMA4 if “01000b”, and TDMA5 if “10000b”. Can be defined as representing that the final TDDS has been recorded.

  A plurality of TDMAs provided on the write-once disc according to the present embodiment are continuously used based on the data recording direction. Therefore, a plurality of TDMAs can be physically regarded as one continuous TDMA and divided into a plurality of virtual TDMAs.

  FIG. 10 is a diagram illustrating a case where the entire TDMA is divided into a plurality of virtual TDMAs. For example, in the case of the write-once disc of the dual recording layer shown in FIG. If TDMA5 is composed of 8192 clusters, the total TDMA is composed of 20480 clusters. If the entire TDMA is divided into 512 cluster units, 1024 cluster units, and 2048 cluster units, respectively, it can be divided into 40, 20 and 10 virtual TDMAs.

  If TDMA3 is very large among TDMA1 to TDMA5 assigned to the write-once disc of the dual recording layer, and the final TDDS is recorded in TDMA3, the recording and / or reproducing apparatus may It can be seen that the final TDDS is recorded in TDMA3, and TDMA3 is searched to obtain the final TDDS. However, when the size of the TDMA3 area is large, the TDMA3 is searched for obtaining the final TDDS, but there may be a problem that the required time becomes long. Therefore, in order to solve such a problem, the virtual TDMA concept as described above is used. As shown in FIG. 10, the sizes of the virtual TDMAs may be the same, but are not necessarily limited to this.

  The recording and / or reproducing apparatus updates the access information only when the virtual TDMA in which the final TDDS is recorded changes after dividing the entire TDMA into a plurality of virtual TDMAs. As the data structure of the approach information according to the present embodiment, the data structure according to the first to fourth embodiments described above can be used. However, the approach information includes information indicating virtual TDMA in which the final TDDS is recorded or virtual TDMA position information.

  FIG. 11 is a block diagram of a recording apparatus according to an embodiment of the present invention. As shown in FIG. 11, the recording apparatus includes a recording / reproducing unit 1, a control unit 2, and a memory unit 3. The recording / reproducing unit 1 records data on the write-once disc 100 and reproduces the recorded data again in order to verify whether or not the recorded data has a defect. As described above, the write-once disc 100 is a write-once disc provided with the AIA according to the present invention.

  For defect management, the control unit 2 records data in a predetermined unit and then verifies the recorded data to search for a portion where a defect has occurred, thereby using a “post-recording verification method”. The control unit 2 verifies after recording user data in one recording operation unit, inspects where the defect area has occurred, and generates defect information that indicates where the defect area is from the inspection result, After the generated defect information is stored in the memory unit 3, a predetermined amount is collected and recorded as an TDFL in the update area provided on the disk 100, that is, in the TDMA, and a TDDS for managing the recorded TDFL is further added to the TDMA. Record. The post-recording verification operation is performed at least once, usually multiple times during one recording operation. The defect information obtained from the execution result of the post-recording verification work is temporarily stored in the memory unit 3 as a TDFL. When the recording operation is completed, the control unit 2 reads the TDFL stored in the memory unit 3 and provides it to the recording / reproducing unit 1, and instructs the recording / reproducing unit 1 to record the information in the TDMA provided in the disc 100. .

  When no more data can be recorded on the disc 100 or no more data is to be recorded in the data area according to the user's will (finalizing), the control unit 2 stores the TDFL and TDDS recorded in the TDMA. Recording is performed on a DMA provided on the disk 100.

  The control unit 2 controls the recording / reproducing unit 1 so as to record data in the data structure according to the present invention. In other words, predetermined information to be updated, that is, TDMS including TDFL or TDDS is recorded in one of a plurality of update areas provided on the disc 100, and the necessity of updating the approach information occurs. The recording / reproducing unit 1 is controlled so as to record the updated approach information in the AIA provided in the AIA.

  Based on the structure of the recording apparatus described above, the approach information recording method according to the present invention will be described in more detail.

  FIG. 12 is a flowchart of a recording method according to an embodiment of the present invention.

  When the write-once disc 100 is loaded on the recording device, the control unit 2 controls the recording / reproducing unit 1 to record predetermined user data on the write-once disc 100 (step 71).

  It is determined whether or not information to be updated has occurred as a result of the execution of the “post-recording verification” operation performed at least once during one recording operation (step 73). The information to be updated in this embodiment means TDMS. If TDMS occurs, the control unit 2 reads the TDFL stored in the memory unit 3 and provides it to the recording / playback unit 1 for recording / playback. The unit 1 records the information in one of a plurality of update areas provided on the disc 100 (step 75). The update area according to the present embodiment means TDMA.

  The control unit 2 determines whether there is another recording operation command (step 77), and if there is another recording operation command, repeats the steps 71 to 75.

  However, if there is no other recording operation command, the control unit 2 determines whether or not there is a need to update the approach information according to the present invention (step 79). In the present embodiment, the access information is updated when the final TDMS, in particular, the TDMA in which the final TDDS is recorded changes, when a new TDMA is allocated, or when the location information of an existing TDMA changes.

  The control unit 2 controls the recording / reproducing unit 1 to provide at least one approach information in the write-once disc 100 for notifying an update region in which information that is finally updated among a plurality of update regions is recorded. Recorded in the AIA (step 81). In order to cope with the case where an error occurs in the recorded approach information, it is desirable to record the same approach information repeatedly.

  As described above, if the approach information indicating the position where the final TDMS information is recorded is recorded on the AIA of the write-once disc, when the write-once disc is loaded again on the recording device or the playback device, Access to the final TDDS information quickly and easily.

  On the other hand, although not shown, a reproducing apparatus for a write-once disc 100 having an AIA in which approach information is recorded according to the present invention has a structure similar to that of a recording apparatus as shown in FIG. However, since it is a playback device, a playback unit is provided instead of the recording / playback unit 1. When the write-once disc 100 including the AIA in which the access information according to the present invention is recorded is loaded, the playback device according to the present invention accesses the DMA and determines whether data is recorded in the DMA. To determine whether the write-once disc 100 has been finalized. If the write-once disc 100 is not finalized, the final approach information is obtained by approaching the AIA according to the present invention. From the final approach information, the recording apparatus or reproducing apparatus recognizes the TDMA area where the final TDDS information is recorded. A person skilled in the art can easily understand the operation of the reproducing apparatus according to the present invention from the description of the write-once disc 100 having the AIA according to the present invention and the recording apparatus thereof.

  If the write-once disc 100 is an uninitialized blank disc, no data is recorded in the AIA. The recording device initializes the write-once disc 100 for use. When the write-once disc 100 is initialized, the first approach information is recorded in the data structure according to various embodiments as described above in the first recording cluster of the AIA.

  In the above, this invention was demonstrated centering on the desirable embodiment. Those skilled in the art will appreciate that the present invention may be embodied in variations that do not depart from the essential characteristics of the invention. The scope of the present invention is shown not in the foregoing description but in the claims, and all differences within the equivalent scope should be construed as being included in the present invention.

  As described above, according to the present invention, in the case of a write-once disc on which predetermined information is updated and recorded at a new position, the access time for reproducing the updated information can be further shortened. In addition, when there are a plurality of update areas for recording updated information necessary for use of the write-once disc, the recording device or the playback apparatus can update the information finally updated from the plurality of update areas. Can be quickly and easily determined.

It is a figure which shows the structure of the write-once type disc which concerns on one Embodiment of this invention. It is a figure which shows the structure of the write-once type disc which concerns on one Embodiment of this invention. It is a figure which shows the further detailed structure of the write-once disc of a single recording layer concerning one Embodiment of this invention. It is a figure which shows the further detailed structure of the write-once disc of the double recording layer concerning one Embodiment of this invention. It is a figure which shows the further detailed structure of the write-once disc of the double recording layer concerning one Embodiment of this invention. It is a figure which shows the further detailed structure of the write-once disc of the double recording layer concerning other embodiment of this invention. It is a figure which shows the further detailed structure of the write-once disc of the double recording layer concerning other embodiment of this invention. FIG. 5 is a diagram illustrating a process of recording data in a user data area and a spare area according to an embodiment of the present invention. It is a figure which shows the data structure of the approach information which concerns on 1st Embodiment of this invention. It is a figure which shows the data structure of the approach information which concerns on 2nd Embodiment of this invention. It is a figure which shows the data structure of the approach information which concerns on 3rd Embodiment of this invention. It is a figure which shows the data structure of the approach information which concerns on 4th Embodiment of this invention. It is a figure which shows the case where whole TDMA is divided | segmented into several virtual TDMA. 1 is a block diagram of a recording apparatus according to an embodiment of the present invention. 3 is a flowchart of a recording method according to an embodiment of the present invention.

Claims (32)

In a write-once disc having at least one recording layer,
Temporary defect management information (TDDS) including temporary defect information (TDFL) including information indicating where a defect has occurred, and a position pointer indicating a position where the corresponding temporary defect information (TDFL) is recorded A plurality of temporary disk management areas (TDMA) comprising:
Of the plurality of temporary disk management areas (TDMA), information indicating the temporary disk management area (TDMA) in which the finally updated temporary defect management information (TDDS) is recorded is shown, and the final update is performed. At least one access information area in which approach information updated by a device using the write-once disc is recorded when the temporary disc management area (TDMA) in which the recorded temporary defect management information (TDDS) is recorded is changed And a disc comprising:   2. The disk according to claim 1, wherein the approach information includes the plurality of temporary disk management areas (TDMAs) or position information of each of the temporary disk management areas (TDMAs). The disk according to claim 2, wherein the position information of each temporary disk management area (TDMA) includes a start position and an end position of each temporary disk management area (TDMA). The disk according to claim 2, wherein the position information of each temporary disk management area (TDMA) includes a start position and a size of each temporary disk management area (TDMA). 3. The disk according to claim 2, wherein the position information of each temporary disk management area (TDMA) includes an end position of each temporary disk management area (TDMA) and the size of the area.   2. The disc according to claim 1, wherein the approach information is repeatedly recorded in the approach information area.   2. The disk according to claim 1, wherein the access information is flag information indicating a temporary disk management area (TDMA) in which the finally updated temporary defect management information (TDDS) is recorded.   The disk according to claim 1, wherein the plurality of temporary disk management areas (TDMA) are physical areas.   The disk according to claim 1, wherein the plurality of temporary disk management areas (TDMA) are areas obtained by logically dividing a plurality of physical temporary disk management areas (TDMA).   The disc is a single recording layer disc having a lead-in area, a data area, and a lead-out area, and the access information area is provided in at least one of the lead-in area or the lead-out area. The disk according to claim 1.   The disc is a dual recording layer disc, and each recording layer includes an inner area, a data area, and an outer area, and at least one of the access information areas is provided in the inner area or the outer area. The disk according to claim 1. In an apparatus for recording data on a write-once disc,
A recording / reproducing unit for recording / reproducing information on / from the disc;
Temporary defect management information (TDDS) to be updated is recorded in one of a plurality of temporary disk management areas (TDMA) provided in the disk, and finally, among the plurality of temporary disk management areas (TDMA) The recording / reproducing unit is configured to record access information notifying a temporary disk management area (TDMA) in which updated temporary defect management information (TDDS) is recorded in an access information area provided in at least one of the disks. A control unit for controlling,
The temporary defect management information (TDDS) includes temporary defect information (TDFL) including information indicating where a defect has occurred, and a position pointer indicating a position where the corresponding temporary defect information (TDFL) is recorded. Including
The control unit is updated to notify the changed temporary disk management area (TDMA) when the temporary disk management area (TDMA) in which the finally updated temporary defect management information (TDDS) is recorded is changed. An apparatus for controlling the recording / reproducing unit so as to record the approach information. 13. The apparatus according to claim 12 , wherein the access information includes the number of the plurality of temporary disk management areas (TDMA), or includes position information of each temporary disk management area (TDMA). 14. The apparatus according to claim 13 , wherein the position information of each temporary disk management area (TDMA) includes a start position and an end position of each temporary disk management area (TDMA). The apparatus according to claim 13 , wherein the location information of each temporary disk management area (TDMA) includes a start position and a size of each temporary disk management area (TDMA). 14. The apparatus according to claim 13 , wherein the position information of each temporary disk management area (TDMA) includes an end position and a size of each temporary disk management area (TDMA). The apparatus according to claim 12 , wherein the control unit controls the recording / reproducing unit to repeatedly record the approach information in the approach information area. 13. The apparatus according to claim 12 , wherein the access information is flag information indicating a temporary disk management area (TDMA) in which the finally updated temporary defect management information (TDDS) is recorded. 13. The apparatus of claim 12 , wherein the plurality of temporary disk management areas (TDMA) are physical areas. The apparatus according to claim 12 , wherein the plurality of temporary disk management areas (TDMA) are areas obtained by logically dividing a plurality of physical temporary disk management areas (TDMA). The disc is a single recording layer disc including a lead-in area, a data area, and a lead-out area, and the access information area is provided with at least one in the lead-in area or the lead-out area. The apparatus according to claim 12 . The disc is a dual recording layer disc, and each recording layer includes an inner area, a data area, and an outer area, and at least one of the access information areas is provided in the inner area or the outer area. The apparatus according to claim 12 . Of the plurality of temporary disk management areas (TDMA), information indicating the temporary disk management area (TDMA) in which the finally updated temporary defect management information (TDDS) is recorded is shown and finally updated. In a write-once disc reproducing apparatus in which approach information updated by an apparatus that uses a write-once disc is recorded when a temporary disc management area (TDMA) on which temporary defect management information (TDDS) is recorded is changed,
A reproducing unit for reproducing data recorded on the disc;
The reproduction unit is controlled to obtain finally updated approach information in at least one approach information area provided on the disc, and a plurality of temporary disc management areas (provided on the disc based on the approach information) ( A control unit for obtaining information on a temporary disk management area (TDMA) in which temporary updated defect management information (TDDS) is finally recorded,
The temporary defect management information (TDDS) includes temporary defect information (TDFL) including information indicating where a defect has occurred, and a position pointer indicating a position where the corresponding temporary defect information (TDFL) is recorded. The apparatus characterized by including. The apparatus according to claim 23 , wherein the access information includes location information of a temporary disk management area (TDMA) in which the finally updated temporary defect management information (TDDS) is recorded. The temporary disk management area (TDMA) position information in which the finally updated temporary defect management information (TDDS) is recorded includes a start position and an end position of the temporary disk management area (TDMA). An apparatus according to claim 24 . 25. The apparatus of claim 24 , wherein the plurality of temporary disk management areas (TDMAs) are physical areas. The apparatus according to claim 24 , wherein the plurality of temporary disk management areas (TDMA) are areas obtained by logically dividing a plurality of physical temporary disk management areas (TDMA).   The approach information includes information indicating the positions of all temporary disk management areas (TDMA) and information indicating the positions of temporary disk management areas (TDMA) where final temporary defect management information (TDDS) is recorded. The disk according to claim 1, characterized in that: Information indicating the location of the temporary disk management area (TDMA) where the final temporary defect management information (TDDS) is recorded includes the address of the first physical sector of the first cluster of the temporary disk management area (TDMA), 29. The disk of claim 28 , which is the address of the first physical sector of the last cluster of the temporary disk management area (TDMA).   The disk according to claim 1, wherein the temporary defect management information (TDDS) is used as the approach information without defining a separate data structure of the approach information.   The disk according to claim 1, wherein the disk access time is shortened by using predetermined update information recorded at a new position. The temporary disk management area (TDMA) is divided into a plurality of virtual temporary disk management areas (TDMA), and the access information is changed by the virtual temporary disk management area (TDMA) in which final temporary defect management information (TDDS) is recorded. 13. The device of claim 12 , wherein the device is updated when it is performed.

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