JP2005310215A - Defective area management method and optical recording medium controller - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a defective area management method capable of shortening the processing time of recording/reproducing in an optical recording medium. <P>SOLUTION: When a primary defective sector generated during the manufacturing of an optical recording medium among defective sectors is detected, the address information of all sectors included in an ECC (error correction code) block 11 including this primary defective sector among ECC blocks is stored in a PDL (primary defect list) 406, and the use of the ECC block 11 including the primary defective sector is prevented during data recording/reproducing by referring to the address information of the sectors registered in the PDL 406. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a defect area management method for managing a defect area of an optical recording medium and data for managing the defect area when data is recorded / reproduced on / from an optical recording medium such as a recordable optical disk. The present invention relates to a recording medium control apparatus.

  In an optical recording medium such as an optical disk, there is a method for managing a defective area in order to guarantee data reliability even when a defect or scratch in the medium or deterioration during repeated rewriting occurs. Hereinafter, a defective area management method will be described by taking a DVD-RAM disk as an example.

  Defects that occur in optical discs are roughly classified into two types. One is a primary defect that occurs during the production of an optical disk. The primary defect is detected by certification performed at the time of factory shipment of the optical disc or at the time of physical formatting. The other is a secondary defect caused by scratches or foreign matter on the surface of the disk generated by use. This secondary defect is detected by verification at the time of recording.

  The defect area management information of the DVD-RAM is recorded in a total of four places, two each in two places in the lead-in area on the inner periphery of the disc and two in the lead-out area on the outer periphery. This area is called DMA (Defect Management Area) here. The four DMAs ensure the reliability of the data by recording the same contents multiple times. The DMA further includes a DDS (Disc Definition Structure) in which information relating to initialization of the disk is recorded, a PDL (Initial Defect List) which is a list for registering address information indicating the position of the primary defective sector detected by the certification, the disk SDL (secondary defect list) which is a list for registering address information indicating the position of the sector of the secondary defect detected by the verification at the time of writing data to the memory.

  In a DVD-RAM disc, when a defective sector is detected, the defect area management method differs between when a primary defect is found and when a secondary defect is found. A defective area management method for a DVD-RAM disk will be described with reference to FIGS.

  First, defect management is performed on the primary defective sector detected by certification by performing slip replacement using PDL. For example, as shown in FIG. 8, when a primary defect is found in an area to which sector numbers 3, 7, and 8 are originally assigned in the data recording area 80, address information indicating the position of the defective sector is registered in the PDL 81. As shown in FIG. 9, the sector number is not given to the physical address 91 having the primary defect, and the sector having the primary defect is skipped in units of sectors, that is, skipped. If the next appearing sector is an area without a defect, the sector numbers are assigned as 3, 7, and 8. For this reason, the correspondence between the logical address 90 and the physical address 91 is shifted in all sectors after the replaced sector.

  Further, defect management is performed on the secondary defective sector found by verification at the time of writing to the disk by performing linear replacement using SDL. The slip replacement is performed in units of one sector, whereas the linear replacement is performed in units of 1 ECC (error correction code) block. For example, as shown in FIG. 10, when a secondary defect is detected in a sector originally assigned sector numbers 3, 7, and 8 in the data recording area 100, the entire ECC block including the sector is determined as a defect, and the block is transferred to the SDL 101. The address information of the head sector 102 at the boundary is registered, and the ECC block is not used. In this case, as shown in FIG. 11, the defect management of the disk is performed by using the block in the alternative sector area 111 instead of the ECC block including the sector in which the secondary defect in the data recording area 110 is detected.

  The algorithm of the conventional defective area management method is shown in the flowchart of FIG. A conventional defective area management method will be described with reference to the flowchart of FIG.

  First, a defective area is detected, and if no primary defect is detected in the optical disk medium in step S121, all the processes are finished. If a primary defect is detected in the optical disk medium, the primary defect is detected in step S122. Address information indicating the position of the defective sector is registered in the PDL area. Subsequently, in step S123, no sector number is given to the primary defective sector, and the sector of the primary defect is skipped in units of sectors, that is, skipped, and the defective sector is not used.

  Furthermore, if a primary defect exists in the succeeding sector in step S124, the process proceeds to step S122. If there is no primary defect in the succeeding sector, the process proceeds to step S125. In step S125, the sector in which the primary defect is detected is replaced with the first normal sector subsequent to the sector, and the process ends.

As described above, conventionally, when a primary defective sector exists in an optical recording medium, defect management is performed by skipping in units of one sector, and in order to perform defect management for a primary defect in an optical recording medium, 1 It was forced to process by sector.
JP 2001-229623 A

  As described above, as a conventional defect management method for a DVD-RAM disk, when a primary defect is found, predetermined information is registered in the PDL, slip replacement is performed in units of one sector, and signal recording / reproduction is performed. We were processing.

  However, in this case, it is necessary to determine whether or not the sector to be processed is registered in the PDL in units of one sector, and it becomes difficult to shorten the processing time, and recording / reproduction processing at high speed As it becomes, it becomes difficult to achieve performance.

  Further, since recording / reproduction processing is performed in units of sectors, the processing contents are complicated compared to other media other than optical recording media that can perform recording / reproduction processing in units of 1 ECC block. It takes time to design and evaluate, and maintenance and operation of the optical disk control device become difficult.

  The present invention has been made to solve the above problems, and a defective area management method and an optical recording medium control capable of shortening a processing time at the time of recording / reproducing with respect to the optical recording medium An object is to provide an apparatus.

  A defective area management method according to the present invention is a defective area management method for managing a position of a defective sector of an optical recording medium so that the defective sector is not used at the time of data recording and reproduction. The recording area of the medium is divided into a plurality of blocks with a predetermined number of consecutive sectors as a unit, and when the primary defective sector generated during the manufacture of the optical recording medium among the defective sectors is detected, the block Information specifying the position of the block including the primary defective sector is registered, and the block specifying the position of the registered block is referred to, and the block including the primary defective sector is recorded at the time of data recording. And not to be used during playback.

  In the defect area management method according to the present invention, address information indicating the positions of all the sectors included in the block is registered as information for designating the positions of the blocks including the primary defective sector. .

  In the defect area management method according to the present invention, an address indicating a position of a sector at a boundary between a block including the primary defective sector and a block adjacent thereto is used as information specifying a position of the block including the primary defective sector. Information is registered.

  In addition, the defective area management method according to the present invention includes a block including a secondary defective sector detected by checking whether normal data writing performed at the time of disk writing is performed among the blocks, and an adjacent block. Address information indicating the position of the sector at the boundary with the block to be registered is registered in a list, and the address information registered in the list is referred to so that the block including the secondary defective sector is recorded and reproduced. The information specifying the position of the block including the primary defective sector is not used, and the address information indicating the position of the sector at the boundary between the block including the secondary defective sector and the adjacent block is registered in the list. It is intended to be registered.

  In the defect area management method according to the present invention, the block is a processing unit for recording and reproducing data on an optical recording medium.

  In the defect area management method according to the present invention, the block is an ECC block.

  In addition, the defect area management method according to the present invention is for determining whether the data processing unit recorded or reproduced on the optical recording medium is the sector unit or the block unit. Are recorded and reproduced on the optical recording medium by the data processing unit determined from the determination data.

  An optical recording medium control apparatus according to the present invention is an optical recording medium control apparatus for managing a position of a defective sector of an optical recording medium so that the defective sector is not used at the time of data recording and reproduction. The recording area of the optical recording medium is divided into a plurality of blocks in units of a predetermined number of consecutive sectors, and when a primary defective sector generated during manufacturing of the optical recording medium among the defective sectors is detected, Among the blocks, information specifying the position of the block including the primary defective sector is registered, and the block including the primary defective sector is stored in the data by referring to the information specifying the position of the registered block. It is intended not to be used during recording and playback.

  The optical recording medium control apparatus according to the present invention registers address information indicating the positions of all sectors included in the block as information specifying the positions of the blocks including the primary defective sector.

  The optical recording medium control apparatus according to the present invention represents, as information designating a position of a block including the primary defective sector, a position of a sector at a boundary between the block including the primary defective sector and a block adjacent thereto. Address information is registered.

  Further, the optical recording medium control device according to the present invention includes a block including a secondary defective sector detected by checking whether or not normal data writing performed at the time of disk writing out of the blocks is performed. Address information indicating the position of a sector at the boundary with an adjacent block is registered in a list, and the block including the secondary defective sector is recorded and reproduced by referring to the address information registered in the list. A list for registering address information indicating the position of a sector at the boundary between a block including the secondary defective sector and information adjacent to the block including information specifying the position of the block including the primary defective sector so that it is not used sometimes. To register.

  In the optical recording medium control apparatus according to the present invention, the block is a processing unit for recording and reproducing data on the optical recording medium.

  The optical recording medium control apparatus according to the present invention is such that the block is an ECC block.

  In addition, the optical recording medium control device according to the present invention determines whether the data processing unit recorded or reproduced on the optical recording medium is the sector unit or the block unit. Data is recognized and recorded or reproduced on an optical recording medium by a data processing unit determined from the determination data.

  According to the defect area management method of the present invention, the defect area management method prevents the defective sector from being used at the time of data recording and reproduction by managing the position of the defective sector of the optical recording medium, The recording area of the optical recording medium is divided into a plurality of blocks in units of a predetermined number of consecutive sectors, and when a primary defective sector generated during manufacturing of the optical recording medium among the defective sectors is detected, Among the blocks, information specifying the position of the block including the primary defective sector is registered, and the block including the primary defective sector is stored in the data by referring to the information specifying the position of the registered block. Since it is not used during recording and reproduction, defect management can be performed in units of 1 ECC block instead of in units of 1 sector. Since there is no need to perform defect determination, the processing time for recording and playback of optical recording media can be shortened, and the processing load for recording and playback can be reduced. The time required can be shortened, and maintenance and operation can be facilitated.

  Further, according to the defect area management method of the present invention, the address information indicating the positions of all the sectors included in the block is registered as the information specifying the position of the block including the primary defective sector. By making the recording / reproducing processing unit performed at one time a block unit, the processing time during recording / reproducing of the optical recording medium can be shortened, and the load of recording / reproducing processing can be reduced. .

  Further, according to the defect area management method of the present invention, as information specifying the position of the block including the primary defective sector, the position of the sector at the boundary between the block including the primary defective sector and the block adjacent thereto is determined. By registering the address information to be represented and making the recording / playback processing unit performed at one time a block unit, the processing time during recording / playback of the optical recording medium can be shortened, and the processing load of recording / playback is also reduced. Can also be reduced.

  Further, according to the defective area management method of the present invention, a block including a secondary defective sector detected by checking whether or not normal data writing performed at the time of disk writing is performed among the blocks, and Address information indicating the position of a sector at the boundary with a block adjacent to the block is registered in a list, and the block including the secondary defective sector is recorded when data is recorded with reference to the address information registered in the list. Information that designates the position of the block including the primary defective sector is registered so as not to be used at the time of reproduction, and address information indicating the position of the sector at the boundary between the block including the secondary defective sector and the adjacent block is registered. Since it is registered in the list, it is possible to reduce the processing time when recording / reproducing optical recording media. - regeneration of the processing load may also be reduced.

  According to the defect area management method of the present invention, the block is a processing unit for recording and reproducing data on and from the optical recording medium. The processing time can be shortened, and the recording / playback processing load can be reduced.

  Further, according to the defect area management method of the present invention, since the block is an ECC block, it is possible to shorten the processing time at the time of recording / reproducing of the optical recording medium. The processing load can also be reduced.

  In addition, according to the defect area management method of the present invention, it is determined whether the data processing unit recorded or reproduced on the optical recording medium is the sector unit or the block unit. Recognizing the data for determination and recording or reproducing the optical recording medium in accordance with the data processing unit determined from the data for determination, reducing the processing time when recording / reproducing the optical recording medium In addition, the load of recording / reproducing processing can be reduced.

  An optical recording medium control apparatus according to the present invention is an optical recording medium control apparatus that manages the position of a defective sector of an optical recording medium so that the defective sector is not used during data recording and reproduction. The recording area of the optical recording medium is divided into a plurality of blocks in units of a predetermined number of consecutive sectors, and a primary defective sector generated during the manufacture of the optical recording medium among the defective sectors is detected. In the block, information specifying the position of the block including the primary defective sector is registered, and the block including the primary defective sector is registered with reference to the information specifying the position of the registered block. Since it is not used at the time of data recording and reproduction, defect management can be performed not in units of one sector but in units of one ECC block. It is possible to reduce the processing time during recording / reproducing of an optical recording medium and to reduce the load of recording / reproducing processing, and it is necessary to design and evaluate at the development stage. Time can be shortened, and maintenance and operation can be facilitated.

  In addition, according to the optical recording medium control device of the present invention, address information indicating the positions of all sectors included in the block is registered as information specifying the position of the block including the primary defective sector. Therefore, by setting the unit of recording / reproduction performed at a time as a block unit, the processing time during recording / reproduction of the optical recording medium can be shortened, and the load of recording / reproduction processing can be reduced. it can.

  Further, according to the optical recording medium control device of the present invention, as information specifying the position of the block including the primary defective sector, the position of the sector at the boundary between the block including the primary defective sector and the block adjacent thereto By registering the address information indicating the recording / reproducing processing unit at one time, the processing time during recording / reproducing of the optical recording medium can be shortened. The load can also be reduced.

  Further, according to the optical recording medium control device of the present invention, a block including a secondary defective sector detected by checking whether or not normal data writing performed at the time of disk writing out of the blocks, Address information indicating the position of a sector at the boundary with an adjacent block is registered in a list, and the block including the secondary defective sector is recorded when data is recorded with reference to the address information registered in the list. The address information indicating the position of the sector at the boundary between the block including the secondary defective sector and the block adjacent thereto is registered as information specifying the position of the block including the primary defective sector so that it is not used during reproduction. So that the processing time during recording / playback of the optical recording medium can be shortened, The processing load of the recording and playback can also be reduced.

  According to the optical recording medium control apparatus of the present invention, the block is a processing unit for recording and reproducing data on the optical recording medium. The processing time can be shortened, and the load of recording / reproducing processing can be reduced.

  Also, according to the optical recording medium control apparatus of the present invention, the block is an ECC block, so that it is possible to shorten the processing time at the time of recording / reproducing of the optical recording medium, and recording / reproducing. The processing load can be reduced.

  In addition, according to the optical recording medium control device of the present invention, in order to determine whether the data processing unit recorded or reproduced on the optical recording medium is the sector unit or the block unit. The processing time during recording / reproduction of the optical recording medium is determined by recognizing the data for determination of the optical recording medium and recording or reproducing the optical recording medium in accordance with the data processing unit determined from the data for determination. Shortening can be achieved, and the load of recording / reproducing processing can be reduced.

Hereinafter, a defect area management method and an optical recording medium control apparatus according to the present invention will be described by taking a defect area management method and an optical recording medium control apparatus as an example of an optical recording medium, particularly a DVD-RAM disc. To do.
(Embodiment 1)
FIG. 3 is a block diagram showing a configuration of the optical disc apparatus according to Embodiment 1 of the present invention. In FIG. 3, a spindle motor 301 rotates and drives an optical disk medium 302, here a DVD-RAM disk having a data recording capacity of 4.7 gigabytes. The motor drive circuit 303 drives the spindle motor 301. The optical head 304 records and reproduces data with respect to the optical disk medium 302 by irradiation with laser light and reception of reflected light. An actuator drive circuit 305 drives the optical head 304. The servo circuit 306 performs control of the rotation speed of the spindle motor 301, focusing control of the optical head 304, tracking control, and the like. The head amplifier 307 outputs an amplified RF signal obtained by amplifying the RF signal output from the optical head 304. The data slicer 308 outputs a digital signal obtained by binarizing the amplified RF signal. The clock generation circuit 309 generates a reproduction clock using a PLL. The address acquisition circuit 310 detects an address based on the reproduction data signal and the reproduction clock. The reproduction data decoder 311 performs deinterleaving and error correction processing based on the reproduction data signal and the reproduction clock. The buffer memory 312 temporarily stores recording data and reproduction data. The recording data encoder 313 modulates the recording data stored in the buffer memory 312, that is, adds an error correction code and interleaves, and generates pattern data indicating a pit pattern actually recorded on the optical disc 302. The laser drive circuit 314 controls the laser output of the optical head 304 based on the pattern data output from the recording data encoder 313. The interface 315 performs recording data and reproduction data transfer processing with a host PC 316 such as a personal computer serving as a host. The microprocessor 317 controls the operation of the entire data recording / reproducing process of the optical disc apparatus.

  FIG. 4 is a diagram for explaining the configuration of the data recording area of the DVD-RAM disc used in the optical disc apparatus according to Embodiment 1 of the present invention. The lead-in area 401, the data area 402, and the lead-out area 403, a DMA area 404, a DDS area 405, a PDL area 406, and an SDL area 407 are provided. In the lead-in area 401, a table of contents, track information, and the like are recorded. Within this area, there are a DMA area 404, a DDS area 405, a PDL area 406, and an SDL area 407. These details will be described in detail later. The data area 402 is an area that can be used by the user. The data area 402 is divided into 35 zones. As the zone number increases from the inner periphery to the outer periphery of the disk, the number of sectors included in each zone also increases. Further, a primary replacement area 408 exists at the head of zone 0 corresponding to the head of the data area 402. A secondary replacement area 409 exists at the end of the zone 34 corresponding to the final zone of the data area 402. Details of the primary replacement area 408 and the secondary replacement area will be described later. The lead-out area 403 is an area indicating the end of the disk. Similar to the lead-in, a DMA area 404, a DDS area 405, a PDL area 406, and an SDL area 407 also exist in this area. The DMA area 404 is an area where defect management information of the optical disk medium is recorded, and includes a DDS area 405, a PDL area 406, and an SDL area 407. There are 4 locations, 2 in the lead-in and 2 in the lead-out. The reliability of data in the optical disk medium is ensured by multiplex recording the same contents. Information relating to the structure of the optical disk medium is recorded in the DDS area 405. In the PDL area 406, a list in which address information of a sector in which a primary defect (PD: Primary Defect) exists, which is a defect detected by a physical format when the optical disk medium is shipped from a factory, is recorded. In the SDL area 407, a list in which predetermined boundary head address information including a sector in which a secondary defect (SD) that is a defect detected at the time of actual recording / reproducing of the optical disk medium is recorded is recorded. . When there is a secondary defect on the optical disc medium 302, the primary replacement area 408 performs replacement processing in units of 1 ECC block. When a secondary defect is detected, the entire ECC block including the sector in which the secondary defect is detected is determined to be defective, and address information indicating the position of the first sector on the block boundary is registered in the SDL area 407, and the block is used. do not do. Instead, the block in the alternative sector area is used. The primary replacement area 408 corresponds to the above-described alternative sector area. In the secondary replacement area 409, when there is a secondary defect in the optical disc medium and no replaceable replacement area remains in the primary replacement area 408, the defective block can be replaced with a replacement block in the secondary replacement area.

  FIG. 1 is a diagram for explaining a defect management method in the optical disc apparatus according to the first embodiment of the present invention, and shows a relationship between a data recording area and address information recorded in the PDL. 4, the data recording area 10 is divided into a plurality of blocks, here, a plurality of ECC blocks 11 in units of a predetermined number of consecutive sectors. The PDL 406 is a list in which the address information of the primary defective sector is stored as described above.

  FIG. 5 is a flowchart showing a defect management method in the optical disc apparatus according to Embodiment 1 of the present invention. Hereinafter, the defect management method will be described with reference to FIGS. 1 and 3 to 5.

  First, in step S51, it is determined whether or not a primary defect has been detected in the optical disc medium 302. If there is no primary defect, the process ends. If it is determined that there is a primary defect, in step S52, ECC blocks are detected. An area including a sector corresponding to one ECC block including the primary defective sector from the boundary is considered as a primary defective area. In step S53, as shown in FIG. 1, address information indicating the positions of all sectors corresponding to the ECC block is registered in the PDL area 406. In step S54, by skipping the sector for one ECC block registered in the PDL, the primary defective sector is skipped in units of one ECC block and replaced with the subsequent normal sector for the first ECC block. In step S55, it is determined whether or not a primary defect has been detected in the succeeding sector. If a primary defect is detected, the process from step S52 is repeated again. If no primary defect is detected, the process is terminated.

  As described above, according to the first embodiment, unlike the defect management method in which the address information indicating the position of the primary defective sector is registered in the PDL area in units of one sector, defect management for the primary defects is performed in units of one ECC block. It can be carried out. Since defect management is performed in units of one ECC block, it is not necessary to check whether a sector to be processed is registered in the PDL area 406 in units of one sector. The processing time can be shortened.

  In addition, since the processing load performed by the optical disk control device can be reduced, the time required for design and evaluation in the development stage can be shortened, and maintenance and the like can be facilitated.

(Embodiment 2)
FIG. 2 is a diagram for explaining a defective area management method by the optical disc device according to the second embodiment of the present invention, and shows the relationship between the logical address 20 and the physical address 21. The replacement sector area 22 is an area for replacing the block 23 including the primary defective sector.

  FIG. 6 is a flowchart for explaining a defective area management method by the optical disk device according to the second embodiment of the present invention.

  Hereinafter, a defective area management method in the optical disc apparatus according to the second embodiment of the present invention will be described with reference to FIGS. 2 and 6 and FIG. 4 used in the description of the first embodiment.

  First, when a primary defect is detected for the optical disc medium 302 in step S61 and no primary defect is detected, the process ends and when a primary defect is detected in the optical disc medium 302, the process is shown in step S62. Thus, unlike the first embodiment described above, the address information indicating the positions of all sectors of the ECC block including the primary defective sector is not registered in the PDL area 406, and this primary defective sector is stored as shown in FIG. The included ECC block is considered as a secondary defect. In step S63, address information indicating the position of the leading sector at the boundary between this ECC block and the ECC block located immediately before is registered in the SDL area 407.

  Subsequently, in step S64, the block 23, which is a defect area regarded as a secondary defect, is replaced by using the alternative sector area 22 of the primary replacement area. After the replacement, in step S53, the sector for one ECC block regarded as the secondary defect is set from the position of the boundary leading sector as a unit for recording / reproducing processing of the optical disk medium 302. Recording / reproduction processing is performed, and the processing ends.

  As described above, according to the second embodiment, as in the first embodiment, it is not necessary to record / reproduce the optical disk medium 302 in units of one sector. Processing time during recording / reproduction can be shortened.

  Similarly, since the processing load performed by the optical disk control device can be reduced, the time required for design and evaluation in the development stage can be shortened, and maintenance and support can be facilitated.

(Embodiment 3)
FIG. 7 is a flow chart for explaining a defective area management method by the optical disk apparatus according to Embodiment 3 of the present invention.
Hereinafter, a defective area management method in the optical disc apparatus according to the third embodiment of the present invention will be described with reference to FIG. 7 and FIG. 4 used in the description of the first embodiment.

  First, in the physical formatting of the optical disc medium 302, the unit in which the optical disc control device records / reproduces data on the optical disc medium 302 in a predetermined area of the optical disc medium 302 is one sector unit or one ECC block unit. The data used for recognizing the recording is recorded, or the data for specifying whether or not the physical formatting has been performed using a specific optical disk control device.

  In step S71, the data recorded in the predetermined area described above is referred to, and this data is data for recognizing whether the recording / reproducing unit should be one sector unit or one ECC block unit. In this case, in step S72, data is recorded / reproduced in a unit designated by this data.

  In addition, referring to the data recorded in the predetermined area described above, if it can be recognized that this optical disc has been physically formatted by the same type of optical disc control device as the specific optical disc control device, data recording to the optical disc medium 302 is performed. When performing, it is determined that the processing unit can be switched to one sector unit or one ECC block unit as necessary, depending on the recording speed, for example, double speed, or the defect management method. When the recorded data is reproduced by the above-described optical disk control device, the reproduction unit can be switched to one sector unit or one ECC block unit by the recording speed, for example, double speed, or the defect management method. It is judged that. In step S72, the recording / reproducing unit is switched in units of one sector or one ECC block as necessary, and recording / reproducing is performed.

  In other cases, recording / reproduction processing is performed in units of one sector as in step S73.

  As described above, according to the third embodiment, the processing load performed by the optical disc control apparatus can be reduced by switching the recording / reproducing unit to one ECC block as necessary.

  The present invention relates to a defect area management method for managing a defect area of an optical recording medium and a defect area management of an optical disk recording / reproducing apparatus for recording / reproducing data on / from a recordable optical disk such as a DVD-RAM disk. Useful as a control device to perform.

It is a figure which shows the relationship between the data recording area and the address information recorded on PDL for demonstrating the defect area management method which concerns on Embodiment 1 of this invention. It is a figure which shows the relationship between a logical address and a physical address for demonstrating the defect area management method concerning Embodiment 2 of this invention. It is a block diagram which shows the structure of the optical disk control apparatus which concerns on Embodiment 1 of this invention. It is a figure which shows the structure of the data recording area for demonstrating the defect management method which concerns on Embodiment 1 of this invention. It is a flowchart of the defect management method which concerns on Embodiment 1 of this invention. It is a flowchart of the defect management method which concerns on Embodiment 2 of this invention. It is a flowchart of the defect management method which concerns on Embodiment 3 of this invention. It is a figure which shows the relationship between the data recording area and the address information recorded on PDL for demonstrating the conventional defect area management method. It is a figure which shows the relationship between a logical address and a physical address for demonstrating the conventional defective area management method. It is a figure which shows the relationship between the data recording area and the address information recorded on SDL for demonstrating the conventional defect area management method. It is a figure which shows the relationship between a data recording area and an alternative sector area for demonstrating the conventional defect area management method. It is a flowchart of the conventional defective area management method.

Explanation of symbols

301 spindle motor 302 optical disk medium 303 motor drive circuit 304 optical head 305 actuator drive circuit 306 servo circuit 307 head amplifier 308 data slicer 309 clock generation circuit 310 address acquisition circuit 311 recording data decoder 312 buffer memory 313 recording data encoder 314 laser drive circuit 315 Interface 316 Personal computer 317 Microprocessor 401 Lead-in area 402 Data area 403 Lead-out area 404 DMA area 405 DDS area 406 PDL area 407 SDL area 408 Primary replacement area 409 Secondary replacement area

Claims (14)

A defect area management method for managing a position of a defective sector of an optical recording medium so that the defective sector is not used at the time of data recording and reproduction,
The recording area of the optical recording medium is divided into a plurality of blocks in units of a predetermined number of consecutive sectors,
When a primary defective sector generated during the production of the optical recording medium of the defective sector is detected, register information specifying the position of the block including the primary defective sector of the block,
A defective area management method, wherein a block including the primary defective sector is not used at the time of data recording and reproduction by referring to information specifying the position of the registered block.   2. The defect area management method according to claim 1, wherein address information indicating positions of all sectors included in the block is registered as information designating a position of the block including the primary defective sector.   The address information indicating the position of the sector at the boundary between the block including the primary defective sector and the block adjacent thereto is registered as information specifying the position of the block including the primary defective sector. 2. The defect area management method described in 1. An address indicating the position of the sector at the boundary between the block including the secondary defective sector detected by checking whether or not normal data writing performed at the time of writing to the disk among the blocks is performed, and the adjacent block. Register the information in the list,
With reference to the address information registered in the list, the block including the secondary defective sector is not used at the time of data recording and reproduction,
Information specifying a position of a block including the primary defective sector is registered in a list for registering address information indicating a position of a sector at a boundary between the block including the secondary defective sector and a block adjacent thereto. The defect area management method according to claim 3.   5. The defect area management method according to claim 1, wherein the block is a processing unit for recording and reproducing data on an optical recording medium.   6. The defect area management method according to claim 1, wherein the block is an ECC (Error Correction Code) block.   Recognizing the data for determination for determining whether the data processing unit at the time of recording or reproduction recorded on the optical recording medium is the sector unit or the block unit, and the data for the determination 7. The defect area management method according to claim 1, wherein recording or reproduction is performed on an optical recording medium according to the data processing unit determined from the above. An optical recording medium control device for managing a position of a defective sector of an optical recording medium so that the defective sector is not used at the time of data recording and reproduction,
The recording area of the optical recording medium is divided into a plurality of blocks in units of a predetermined number of consecutive sectors,
When a primary defective sector generated during the production of the optical recording medium of the defective sector is detected, register information specifying the position of the block including the primary defective sector of the block,
An optical recording medium control apparatus, wherein the block including the primary defective sector is not used at the time of data recording and reproduction by referring to the information specifying the position of the registered block.   9. The optical recording medium control apparatus according to claim 8, wherein address information indicating positions of all sectors included in the block is registered as information designating a position of the block including the primary defective sector.   9. The address information indicating a position of a sector at a boundary between a block including the primary defective sector and a block adjacent thereto is registered as information designating a position of the block including the primary defective sector. 2. An optical recording medium control device according to 1. An address indicating the position of the sector at the boundary between the block including the secondary defective sector detected by checking whether or not normal data writing performed at the time of writing to the disk among the blocks is performed, and the adjacent block. Register the information in the list,
With reference to the address information registered in the list, the block including the secondary defective sector is not used at the time of data recording and reproduction,
Information specifying a position of a block including the primary defective sector is registered in a list for registering address information indicating a position of a sector at a boundary between the block including the secondary defective sector and a block adjacent thereto. The optical recording medium control device according to claim 10.   12. The optical recording medium control device according to claim 8, wherein the block is a processing unit for recording and reproducing data on and from the optical recording medium.   13. The optical recording medium control device according to claim 8, wherein the block is an ECC block.   Recognizing the data for determination for determining whether the data processing unit at the time of recording or reproduction recorded on the optical recording medium is the sector unit or the block unit, and the data for the determination 14. The optical recording medium control device according to claim 8, wherein recording or reproduction is performed on the optical recording medium in accordance with the data processing unit determined from the above.

Images