JP4954815B2 - Apparatus for formatting an information recording medium - Google Patents

Description

  The present invention relates to an apparatus for formatting an information recording medium, and more particularly to an apparatus for performing a certification format.

  In recent years, large-capacity exchangeable information recording media and drive devices that perform recording / reproducing operations using the same have become widespread.

  As an information recording medium having a large capacity and exchangeable, an optical disk medium such as a DVD (Digital Versatile Disc) or a BD (Blu-ray Disc) is known. The optical disc drive apparatus records data on an optical disc medium using laser light. As the laser light, red laser light is used for DVD, and blue laser light having a shorter wavelength than red laser light is used for BD, so that BD has higher recording density and higher capacity than DVD. is doing.

  FIG. 1 is a diagram showing an example of an area configuration of an optical disk medium. A disc-shaped optical disc medium 1 has a track 2 formed in a spiral shape, and a large number of blocks 3 are formed along the track 2.

  The width (track pitch) of the track 2 is defined as 0.32 μm in the BD. The block 3 is a unit for error correction, and is the minimum unit for performing recording and reproduction operations. The block 3 is, for example, 1 ECC (size: 32 Kbytes) for DVD and 1 cluster (size: 64 Kbytes) for BD. When described using a unit called a sector (size: 2 KB) which is the minimum unit of data on an optical disk medium, 1 ECC = 16 sectors, 1 cluster = 32 sectors.

  In BD, a unit called logical sector (1 logical sector = 2 sectors / 4 Kbytes) called AUN may be used.

  In the BD, the data in the block 3 includes a data block that is user data and a flag block that is flag information such as an address. FIG. 2 is a diagram showing a data format of the block 3 of the BD.

  Referring to FIG. 2, data called LDC cluster and BIS cluster are generated by adding parity, which is a correction code for error correction, to a data block that is user data and a flag block that is flag information, These two pieces of data are interleaved to generate data in the form of ECC clusters. Data is stored in the data format of the ECC cluster in the block 3 (that is, cluster) of the BD. The data size of the BIS cluster is smaller than the data of the LDC cluster, but since parity data of the same level as that of the LDC cluster is added, the error correction capability is extremely high and correct compared to the data block corresponding to the LDC cluster. It has a feature that the possibility of reading is high.

  In addition, although the cluster demonstrated below points out the block 3 of BD, it is not limited to this.

  FIG. 3 is a diagram showing the structure of a recordable optical disk medium.

  The optical disk medium 1 includes a lead-in area 4, a data area 5, and a lead-out area 6.

  The data area 5 includes a user data area 14 and spare areas 15a and 15b.

  The user data area 14 is an area where arbitrary information can be recorded by the user, such as real-time data such as music and video, text, and computer data such as a database.

  The spare areas 15a and 15b are replacement areas for recording data instead of a certain block 3 in the user data area 14. For example, when a defective block is detected in the user data area 14, the spare areas 15a and 15b are used as replacement areas for the blocks. Is done. In the example shown in FIG. 3, the spare areas 15a and 15b are arranged on the inner circumference side (that is, the lead-in area 4 side) and the outer circumference side (that is, the lead-out area 6 side) of the data area 5, respectively.

  The lead-in area 4 is located on the inner circumference side from the data area 5, and the lead-out area 6 is located on the outer circumference side from the data area 5. These areas 4 and 5 have management information regarding the optical disc medium 1 and the like, and also play a role of preventing overrun of an optical pickup (not shown).

  The lead-in area 4 includes a first defect management area 10 (hereinafter also referred to as 1stDMA) and a second defect management area 11 (hereinafter also referred to as 2ndDMA). Both 1stDMA and 2ndDMA are areas for recording disc management information such as data structure of the optical disc medium 1 and information on defects.

  The lead-out area 6 includes a third defect management area 12 (hereinafter also referred to as 3rdDMA) and a fourth defect management area 13 (hereinafter also referred to as 4thDMA). Both 3rdDMA and 4thDMA are areas for recording disc management information such as data structure and defect information of the optical disc medium 1.

  Here, the DMA is generally a defect management area, but it can be provided with various information (disk management information) related to the disc in addition to the defect management information. It is also called a disc management area.

  The 1st DMA to 4th DMA are respectively arranged at predetermined positions on the optical disc medium 1, and the same information is recorded in the 1st DMA to 4th DMA. This is in preparation for the case where any one of 1st DMA to 4th DMA becomes defective. Even if there is a DMA that cannot be reproduced correctly, defect management information can be acquired if any one of the DMAs can be reproduced correctly. it can.

  Each of the 1st DMA to 4th DMA includes a disk definition structure 20 (hereinafter also referred to as DDS) and a defect list 21 (hereinafter also referred to as DFL).

  The DFL 21 includes a defect entry 23 that is information relating to replacement processing such as the position of a defective block and the position of the replacement destination, a defect list header 22 that includes the identifier and update count information of the DFL 21, information on the total number of defect entries 23, and the like. Including.

  Next, an address indicating the position of the block 3 will be described. As the address, a physical address (hereinafter also referred to as PSN) that is physically allocated on the recording layer of the optical disc medium 1 and an area accessible from the host device or the like, that is, a data area 5 that is a logical space. There are logical addresses (hereinafter also referred to as LSNs) that are virtually allocated continuously. These addresses are generally allocated in units of sectors or a predetermined number of units in the block 3.

  The PSN of the BD-RE, which is a rewritable BD disc, includes an address called ADIP given in the form of wobbling the side of the track 2 and an address called AUN given in the recording data of the block 3 There is. The LSN is a series of address information starting from 0, which is virtually continuously allocated to the data area 5, and is usually an address which is sequentially allocated to all the blocks 3 with the first block in the user data area 14 being 0. If there is a block 3 that has undergone a replacement process in the user data area 14, the LSN that should have been originally allocated to the replacement source block corresponds to the spare area 15a or 15b that is the replacement destination. Allocated for block.

  The physical address (PSN) is an address allocated in ascending order along the direction of the track path of the disk. For example, in the case of a two-layer BD-RE disc having two recording layers (L0 layer and L1 layer), an addressing method called an opposite pass is employed. In the ascending order, physical addresses are assigned in the ascending order from the outer peripheral side to the inner peripheral side in the L1 layer.

  Next, the certification process will be described. In a rewritable optical disk medium such as a DVD-RAM or a BD-RE, a process called “certification” is generally performed in order to inspect beforehand whether the block 3 in the data area 5 is a normal block or a defective block. In the certification, arbitrary data is recorded (Write) in the block 3, and then data is read from the block 3 (Verify) to check whether the recorded data matches the read data. This is an inspection method. When it is determined that they match, the block 3 is determined as a normal block. On the other hand, if the write fails, the verify fails, or the written data and the read data do not match, it is determined that the block 3 is a defective block that cannot be used normally, and the position information of the defective block is determined to be defective. Register in the list 21 or the like (see, for example, Patent Document 1). Further, when the disk has spare areas 15a and 15b for replacement, the block 3 in the spare areas 15a and 15b may be assigned as a replacement destination of the block determined to be defective by the certification (for example, Patent Documents). 2).

  As types of certification processing, there are processing for performing certification on the entire disk surface, processing for performing certification only on a specific area, and the like. For example, in the BD-RE, “Full Certification” (hereinafter also referred to as “full certification”) and “Quick Certification” (hereinafter also referred to as “quick certification”) are used as part of the format processing for initializing disk management information such as DDS 20 and DFL 21. )) Is defined (for example, see Non-Patent Document 1). These are processes included in a process called a format for initializing the data area 5, that is, ready to record user data in the data area 5 (= ready state). There is no valid user data in the area.

  The full certification is a mode in which certification is performed on all the blocks 3 included in the data area 5.

  The quick certification is a mode in which certification is performed only for defective blocks registered in the defect list 21 in the data area 5, and the minimum block 3 is inspected at a higher speed than in full certification. The purpose is that.

  Next, the defect entry 23 of the BD-RE will be described.

  FIG. 4 is a diagram showing the configuration and type of the defect entry 23 of the BD-RE.

  FIG. 4A shows the configuration of the defect entry 23. The defect entry 23 includes an entry attribute 30 that indicates the state (category) of the defective block, defect position information 31 that indicates the top physical address of the defective block that is the replacement source, a sub attribute 32 that is incidental information of the entry attribute 30, and a replacement destination This is 8-byte (64-bit) information including replacement position information 33 indicating the head physical address and the like of the block.

  FIG. 4B shows the type of the defect entry 23 of the BD-RE, that is, the type of the entry attribute 30. As the entry attribute 30, there are five attributes such as RAD, NRD, SPR, PBA, and UNUSE.

  The RAD attribute is an attribute indicating a defect of a single block, and includes the leading physical address of the defective block as the defect position information 31 and the leading physical address of the replacement block in the spare area 15 as the replacement position information 33. In RAD, RAD0 indicating that the defective block is actually recorded in the replacement block, and the replacement block are allocated for the defective block, but the replacement block is not actually recorded (replacement position information). RAD1 indicating that the block indicated by 33 is not used) exists. The RAD0 attribute is represented by “0000” in binary number, for example, and the RAD1 attribute is represented by “1000” in binary number, for example.

  The difference between the RAD0 attribute and the RAD1 attribute is whether the data of the replacement block is read (RAD0 attribute) or the data of the replacement source (that is, defective) block (RAD1 attribute) when a data read request is made. is there. When a data recording request is made, access is made to the replacement block for any attribute.

  In addition, information indicating the “Discard” state (for example, 1000 in binary) may be set in the sub-attribute 32 of RAD0. This shows a state in which a part of the data to be recorded in the replacement source block is replaced and recorded in the replacement destination block. Details will be described later.

  The NRD attribute indicates a single defective block that has not been replaced, and the defect position information 31 includes only the leading physical address of the defective block. The NRD attribute is expressed as “0001” in binary, for example.

  The SPR attribute indicates a block that can be used as a replacement block in the spare area 15, and the replacement block information 33 includes the top physical address of the replacement block. For example, the SPR attribute is expressed as “0010” in binary.

  In addition, information indicating the “RDE” state (for example, 0100 in binary number) may be set in the sub-attribute 32 of the SPR attribute. This is information indicating that the replacement block indicated by the replacement position information 33 has been previously determined as a defect, and indicates that the block may be defective.

  The PBA attribute indicates an area of one or more blocks that may be defective, and includes the top physical address of the area as defect position information 31 and the number of consecutive blocks as replacement position information 33. The PBA attribute is represented as “0100” in binary, for example.

  The PBA attribute sub-attribute 32 may be set with information indicating the “RDE” state (for example, “0100” in binary number). This is information indicating that the area indicated by the defect position information 31 and the replacement position information 33 has been previously determined as a defect, and indicates that the area may be a defect.

  The UNUSE attribute indicates a single defective block in the spare areas 15 a and 15 b, and the replacement block information 33 includes the leading physical address of the defective block. The UNUSE attribute is expressed as “0111” in binary, for example.

  In the defect list 21 (FIG. 3), the defect entries 23 are sorted and stored in ascending order by the 8-byte value of the defect entry 23 (more precisely, sorted in ascending order by the 63-bit value excluding the most significant bit). RAD0 and RAD1 are treated as the same attribute). That is, the defect entries 23 are grouped for each entry attribute 30 and sorted in ascending order.

  Here, the “Discard” state described above will be described in more detail. Data recording / reproduction with respect to the rewritable optical disc medium 1 is basically performed in units of block 3. For example, in the case of BD-RE, it is a unit of one cluster (64 KB). However, there is a case where the host PC device requests to record data having a size less than a block unit. In order to respond to such a request, the drive device that records and reproduces data to and from the optical disc medium 1 has a function called Read-Modify-Write (hereinafter also referred to as RMW).

  FIG. 5 is a diagram showing a procedure of RMW processing, and it is assumed that BD-RE is used as a recording medium. A hexadecimal number is expressed by adding “h” at the end of the number.

Referring to FIG. 5, for a cluster (first physical address = 100h, size = 16 logical sectors (20 h in terms of address)), first physical address = 110h, recording request size = 8h (4 logical sectors) A processing procedure when a recording request having a size smaller than a cluster unit is made will be described.
Step (1): The data of the block (= cluster) including the physical address (110h) requested to be recorded is read. In this example, assuming that Read fails, the block is treated as a defect.
Step (2): The recording request data is embedded in the portion of the data read out in step (1) corresponding to the recording-requested position, and new one block unit data is generated.
Step (3): A block in the spare area 15 (for example, a block having a head physical address = 10000h) is assigned as the replacement destination of the defective block whose data has been read out in step (1), and the block 1 generated in (2) Records data for blocks.

  The request from the user is only the write process, but the RMW process includes a data read process (read process) and a data recording process (write process). In some cases, the Read process performed before the Write process fails for some reason (for example, dust has happened to adhere to the disk surface), and the data of the block cannot be read correctly. However, since the request from the user is “Write”, it is not preferable that a “Write error” occurs even if Read fails.

  In a BD disc, BIS data includes flag information indicating the state of blocks and sectors called “flag bits” (hereinafter also referred to as flag bits), and “Status Bits (Sa)” (hereinafter referred to as “flag bits”). A method of including 2-bit information indicating the state of data for each sector, also referred to as a status bit) (see, for example, Patent Document 3). The status bit of the sector that failed to read RMW is set to a state indicating failure. For example, “10” is set in binary notation (in Patent Document 3, it is described that “01” is set in this case, but “10” is set in this specification for convenience of explanation).

  The data of the sector in which “10” is set in the status bit is called “Discard data”. A block including data in the Discard state is called a block in the Discard state. In other words, the block in the Discard state means a block in a state where at least a part of the block data needs to be complemented (or can be complemented) by data of another block.

  However, even if such a status bit is added to the sector, the data that has failed to be read is still recorded in the replacement block with the data being lost.

  By the way, the replacement source block that failed to read the RMW also happened to have dirt such as dust and fingerprints attached at that time, but when the user tried to wipe the dirt or remove the dust and try again May be able to read correctly. For this reason, in the BD disc, a method of including information “Previous Location Address” (hereinafter also referred to as PLA) in the flag bit is also considered (see, for example, Patent Document 3).

  This PLA is valid information only in the replacement destination block, and is physical address information indicating in which physical address position the data of the replacement block in which this PLA is set was recorded immediately before. In the BD-RE, a valid PLA is set only in the replacement blocks in the spare areas 15a and 15b, and 0 indicating invalidity is always set in blocks in other areas (that is, the user data area 14). .

  When reading the data A of the replacement block in the Discard state, the data B of the defective block pointed to by the PLA is also read. When the data B can be read normally, the data A is complemented with the data B, so that the correct data Can be restored. In this way, in the replacement block in the Discard state, PLA is significant as valid information.

  Next, the RMW process will be described in more detail with reference to FIG. FIG. 6A shows the types of status bits, and FIG. 6B shows RMW processing.

Referring to FIG. 6B, when RMW read fails,
Step (1): Generate dummy data with the status bits of all sectors in the block set to “10” in binary notation,
Step (2): Modify the data requested to be recorded in the data generated in step (1), and set the status bit of the modified sector to “00” in binary notation,
Step (3): Record the data generated in step (2) in the replacement block.
The RMW process is performed in the following procedure.

  Next, the relationship between the PLA and the defect entry 23 will be described with reference to FIG. In FIG. 7, in order to simplify the description, a description will be given in a format in which physical addresses originally allocated in sector units are allocated in block 3 units.

  FIG. 7A shows the state of the disk before RMW is performed. As shown in FIG. 7A, when a data recording request less than the block unit is made for the block of the physical address: D, it is necessary to perform RMW processing. However, it is assumed that this physical address: D is defective and data cannot be read correctly.

  FIG. 7B shows a state after the RMW is executed. Since the data cannot be read correctly from the block of the physical address: D, the status bit is set to “10” in binary, the recording request data is modified, and the physical address: A in the spare area 15 is changed to the replacement destination block. Record replacement.

  At this time, the PLA value of the block of the physical address: A is set to indicate the physical address: D. Since replacement recording due to a defect has occurred, the defect list 21 (FIG. 3) has the defect position information 31 as the physical address: D, the replacement position information 33 as the physical address: A, and the discard state is set in the sub-attribute 32 (2 Entry attribute: RAD0 defect entry 23 registered in decimal ("1000") is registered.

  FIG. 8 is a diagram for explaining a complementing process for data in the Discard state. FIG. 8A is a diagram showing a replacement block (physical address: A) in the Discard state including PLA (physical address: D is specified). FIG. 8B is a diagram illustrating the complementing process. As shown in FIG. 8B, when all the data of the replacement source block (physical address: D) can be read correctly, the data read from the replacement destination block is complemented with the data of the replacement source block. Data can be restored.

  If the data of the block pointed to by the PLA cannot be read correctly in response to the Read request, the Read request ends in error.

  FIG. 9 is a flowchart showing a so-called “PLA tracing” processing procedure for data complementation. Here, a description will be given using the example of FIG.

  Step 801: Move to a replacement block to be read. For example, it moves to the position of physical address A shown in FIG.

  Step 802: Read data of a target replacement block.

  Step 803: It is determined whether or not the read data is in the “Discard” state (that is, whether or not PLA is valid). Specifically, it is confirmed whether or not the read data includes a status bit indicating “10”.

  Step 804: If it is determined that the state is the Discard state, the process moves to the replacement source block indicated by PLA. For example, it moves to the position of physical address: D shown in FIG.

  Step 805: The data of the target replacement source block is read, and the data read from the replacement destination block is complemented with the data.

  If the data generated in Step 805 is still in the Discard state, Steps 803 to 805 are repeated a plurality of times. Note that this iterative process is not necessarily performed.

  Step 806: If it is determined that the state is not in the “Discard” state, final data is determined.

  Next, blocks that are subject to certification will be described. In the BD-RE, a block having an entry attribute with a circle in the “Certification target” column shown in FIG. 4B is a certification target. Blocks that are not subject to certification are only blocks with an SPR attribute that does not include “RDE” information in the sub-attribute 32. More specifically, the block to be certified is a block registered as a defect entry 23 with the following five entry attributes 30.

A block indicated by the defect position information 31 of the defect entry 23 having the entry attribute 30 “RAD”. A block indicated by the defect position information 31 of the defect entry 23 having the entry attribute 30 “NRD”. A defect having the entry attribute 30 “SPR”. Block indicated by the replacement position information 33 of the entry 23 (only when the sub attribute 32 includes “RDE” information) • The replacement position starting from the block indicated by the defect position information 31 of the defect entry 23 having the entry attribute 30 “PBA” Areas corresponding to the number of consecutive blocks indicated by the information 33-Blocks indicated by the replacement position information 33 of the defect entry 23 whose entry attribute 30 is "UNUSE"

  In the quick certification, the following processing is performed on the defect list 21 based on the certification result.

(1) Block that failed to be certified ・ If the entry attribute 30 fails to validate a block whose SPR is SPR (sub-attribute 32 includes “RDE” information), the replacement position information 33 indicates a defect entry with UNUSE attribute indicating the block. Change to 23.
If the entry attribute 30 fails to certify a block with a PBA, the defect location information 31 adds a defect entry 23 with an RAD attribute or NRD attribute indicating the block, and deletes the defect entry 23 with a PBA attribute.

(2) A block that has been successfully validated When the entry attribute 30 has been successfully validated for a block having the RAD or NRD attribute, the defect location information 31 deletes the defect entry 23 indicating the corresponding block.
When the entry attribute 30 succeeds in the certification of the block having the PBA attribute, the defect location information 31 deletes the defect entry 23 indicating the corresponding block.
If the entry attribute 30 has been successfully validated for a block having the SPR attribute (the sub attribute 32 includes “RDE” information), the sub attribute 32 is changed to the defect entry 23 having the SPR attribute not including the “RDE” information.
When the entry attribute 30 is successfully verified with the UNUSE attribute, the sub-attribute 32 is changed to the defect entry 23 with the SPR attribute that does not include the “RDE” information.
JP 2000-222831 A JP 2004-253109 A US Patent Application Publication No. 2006/0077816 Information Technology-Multi-Medium Command-5 (MMC-5), [Online], [Search June 28, 2006], Internet <URL: http: // www. t10. org / ftp / t10 / drafts / mmc5 / mmc5r03. pdf>

  In the quick certification, the certification is performed only on the defective blocks registered in the defect list 21 (FIG. 3). Then, depending on the result, processing such as deletion / change / addition as described above is performed on the defect entry 23. However, for example, a problem occurs when the RAD attribute or NRD attribute block certification fails. If the certification fails, for example, the RAD attribute defect entry 23 is left as it is, or the RAD attribute in which a replacement destination block is separately assigned to the block determined to be defective is performed.

  There are two RAD attributes: RAD0 attribute and RAD1 attribute. The difference between these attributes is whether or not the replacement destination data is valid, that is, whether the replacement destination block is read or the replacement source block is read. If the block in which the error occurred in the certification is registered as the RAD1 attribute, and the next RMW request is made to the block, the defective block reading process is performed. In such a case, in addition to a high possibility that the data cannot be read, a retry of the reading process occurs, resulting in a decrease in processing performance. The same problem also occurs when a block that has an error in certification is registered as a defect entry 23 with an NRD attribute.

  In addition, since it is defined that the defect entry 23 with the PBA attribute does not exist after the quick certification, it cannot be registered as the defect entry 23 with the PBA attribute.

  For this reason, it is preferable to register the block in which the error is caused by the certification in the defect entry 23 having the RAD0 attribute. In the case of the RAD0 attribute, access to the replacement block is performed for any recording / reading request. In the quick certification, only the defective block is certified, and nothing is done about the spare area used as a replacement destination. Therefore, when there is a replacement block in the Discard state, the information indicating that it is in the Discard state remains in the replacement block even after quick certification. In the case of full certification, since certification is performed on the entire data area 5 including the spare areas 15a and 15b, the blocks in the spare area do not remain in the Discard state.

  When the information indicating that the disk is in the Discard state remains in the replacement block after the quick certification, when a read request (specifically, RMW read processing) is made to this replacement block, FIG. The shown PLA tracing process will occur. Due to the quick certification format process, there is no valid user data in the replacement source block pointed to by the PLA, so this PLA tracing process is not only useless, but also causes a decrease in performance.

  As another problem, the defect list 23 stores the defect entries 23 sorted in ascending order according to the 8-byte value of the defect entry 23 (more precisely, the value of 63 bits excluding the most significant bit). . That is, the physical addresses of the defective blocks are stored by grouping for each entry attribute 30, and the defective blocks are not arranged and stored in the physical address order.

Specifically, for example, there are four physical addresses A, B, C, and D (A <B <C <D), and B and D are RAD0 attributes, and A and C are NRD attribute defect entries 23. If it is registered in the list 21, the defect list 21 includes
RAD0 B
RAD0 D
NRD A
NRD C
It will be arranged in the order of.

  When the optical disk medium 1 has only one recording layer, if the quick certification is performed in order according to the information of the defect list 21, the RAD0 attribute is first moved while moving the optical head from the inner circumference side to the outer circumference side of the disk. Quick certify for defective blocks. Then, this time, the optical head returns to the inner circumference side of the disk for quick certification with respect to the defective block having the NRD attribute, and again moves from the inner circumference side to the outer circumference side. Since there are five types of entry attributes 30, it may occur when the movement of the optical head from the inner circumference side to the outer circumference side is repeated five times. Similarly, when the optical disk medium 1 has a plurality of recording layers, the movement from the area having the smaller physical address to the area having the larger physical address is repeated a plurality of times. For this reason, there is a problem that the quick certification process takes time.

The apparatus of the present invention is an apparatus for performing a format process of an information recording medium, wherein the information recording medium includes a data area, the data area includes a user data area and a spare area, and the user data area includes The spare area includes a replacement block used in place of a defective block in the user data area or the spare area, and the replacement block is one of the replacement blocks . part is includes indication information indicating that contains no valid data, the apparatus comprises a control unit for controlling the formatting process, when performing the formatting process, the control unit, the replacement block is to indicate that it contains all of the valid data, to clear the indication information included in the replacement block JP To.

According to an embodiment, the instruction information includes status information indicating a state of valid data included in the replacement block and address information indicating a position of the defective block, and the control unit includes When the formatting process is performed , at least the status information is cleared so as to indicate that the valid data included in the replacement block does not exist in the defective block .

According to an embodiment, the instruction information includes status information indicating a state of valid data included in the replacement block and address information indicating a position of the defective block, and the control unit includes When the formatting process is performed , at least the address information is updated to dummy information so as to indicate that the valid data included in the replacement block does not exist in the defective block .

  According to an embodiment, the control unit performs a process of updating information included in the replacement block when performing a quick certification process as the formatting process.

  An apparatus according to the present invention is an apparatus for performing a format process of an information recording medium, wherein the information recording medium includes a plurality of blocks to which physical addresses are assigned, and the plurality of blocks are a plurality of blocks determined to be defective. The information recording medium includes a defect management area for recording a defect list in which the plurality of defective blocks are classified for each attribute type, and the apparatus controls the formatting process. The format process includes a defect block process for performing the process on the defective block, and the control unit performs the physical block in the physical address order for the two or more defective blocks having different attributes. Defective block processing is performed.

  According to an embodiment, the control unit generates a list in which the plurality of defective blocks classified according to the attribute type are sorted in the physical address order, and uses the list sorted in the physical address order. The defective block process is performed.

  According to an embodiment, the control unit collectively performs the defective block processing on a plurality of adjacent defective blocks having consecutive physical addresses.

  According to an embodiment, when the defective block processing is performed, the control unit holds information indicating a defective block scheduled to be subjected to the defective block processing next for each attribute.

  According to an embodiment, when the quick certification process is performed as the defective block process, the control unit performs the certification process in the order of physical addresses on two or more defective blocks having different attributes.

The method of the present invention is a method for performing format processing of an information recording medium, wherein the information recording medium includes a data area, the data area includes a user data area and a spare area, and the user data area includes The spare area includes a replacement block used in place of a defective block in the user data area or the spare area, and the replacement block is one of the replacement blocks . The format processing includes defect block processing for processing the defective block as a target, and the method includes the defect block including the defect information. as shown and performing block processing, said replacement block contains all of the valid data, before Characterized in that it comprises the step of clearing said instruction information contained in the replacement block.

  The method of the present invention is a method for performing format processing of an information recording medium, wherein the information recording medium includes a plurality of blocks to which physical addresses are assigned, and the plurality of blocks are a plurality of blocks determined to be defective. The information recording medium includes a defect management area for recording a defect list in which the plurality of defect blocks are classified according to attribute types, and the formatting process targets the defect blocks. The method includes a defect block process for performing processing, and the method includes a step of performing the defect block process in the order of physical addresses with respect to two or more defective blocks having different attributes.

According to the present invention, since the replacement destination block includes instruction information indicating that a part of the replacement block does not include valid data , when the defective block is certified, the replacement block is all valid. The instruction information (for example, PLA and / or status bit) included in the replacement block is cleared so as to indicate that the data is included . This update prevents access to the defective block when reading the data recorded in the replacement block after the certification. As a result, unnecessary PLA tracing processing is not performed, so that processing performance can be improved. The defective block includes a replacement source block (a block recorded immediately before the data of the replacement block is recorded in the replacement block).

  Further, according to the present invention, defective block processing is performed in order of physical addresses for two or more defective blocks having different attributes. The defect block processing is, for example, quick certification processing or quick reform processing. When performing a quick certification process, all target blocks can be certified at one time along the track path by performing certification on the defective blocks subject to certification in the order of physical addresses along the track path. Can be improved. When trying to certify a plurality of defective blocks for each attribute type, the head needs to reciprocate between the inner and outer sides of the disk as described above. You can certify all target blocks at once.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(Embodiment 1)
(1) Recording / reproducing apparatus First, the recording / reproducing apparatus according to the first embodiment of the present invention will be described. FIG. 10 is a diagram showing the recording / reproducing apparatus 100 of the present embodiment.

  The recording / reproducing apparatus 100 performs data recording / reproducing with respect to the optical disc medium 1. The recording / reproducing device 100 is connected to a host control device (not shown) via an I / O bus 190. The host control device is typically a host computer.

  The recording / reproducing apparatus 100 includes an instruction processing unit 110, a recording control unit 120, a reproduction control unit 130, a defect list storage buffer 140, a data buffer 150, a certification control unit 160, a certification execution unit 170, and an optical head. Unit 180.

  The command processing unit 110 analyzes and processes commands (commands) from the host control device. The recording control unit 120 controls the recording operation, and the reproduction control unit 130 controls the reading operation. The optical head unit 180 records and reproduces information on the optical disk medium 1 by irradiating the optical disk medium 1 with laser light based on commands from the recording control unit 120 and the reproduction control unit 130. The data buffer 150 temporarily stores recording data and reproduction data.

  The defect list storage buffer 140 always has the latest defect list information (latest defect list information) such as the defect list 21 read from any of the 1st to 4th DMA of the optical disc medium 1 or the defect list 21 to be recorded in the 1st to 4th DMA. 40) is stored. The certification control unit 160 controls the entire certification process, and the certification execution unit 170 executes certification.

  The certification control unit 160 includes a certification target region calculation unit 161, a defect entry operation unit 162, a clear target region calculation unit 163, and a certification information storage memory 164.

  The certification target area calculation unit 161 calculates a target area to be certified. The defect entry operation unit 162 registers a block that has an error in certification in the defect list 21 (more precisely, the latest defect list information 40), or deletes a successful block from the defect list 21. When performing the quick certification, the clear target area calculation unit 163 obtains an area other than the certification target area that needs to be cleared (specifically, an area allocated as a replacement block).

  The certification information storage memory 164 stores various types of information necessary for certification. The certification information storage memory 164 stores certification target list information 41, certification result list information 42, total attribute number information 43, and attribute head position pointers 44.

  The certification target list information 41 is list information indicating certification target areas. The certification result list information 42 is information indicating a block in which the certification result is an error. Each attribute total number information 43 is information indicating the number of defect entries 23 for each entry attribute 30. Each attribute head position pointer 44 is information indicating the head position of each entry attribute in the latest defect list information 40. An example of the defect list 21 (latest defect list information 40) is shown in FIG.

  It is possible to generate the same information as the certification result list information 42 by removing the list that was certified OK from the certification target list information 41. However, in this embodiment, the certification target list information 41 and the certification result list are used. Information 42 is generated and managed separately.

  In addition, the initial generation of the latest defect list information 40 is performed by the reproduction control unit 130 storing the information first read from the optical disk medium 1 after the optical disk medium 1 is set in the recording / reproducing apparatus 100 in the buffer 140. Is called. When storing the latest defect list information 40, the certification control unit 160 performs initial setting of each attribute total number information 43 and each attribute head position pointer 44.

  With reference to FIG. 11, each attribute total number information 43 will be described. Each attribute total number information 43 is generated using total number information for each entry attribute 30 included in the defect list header 22.

  The defect list header 22 stores total number information including a defect entry 23 (not subject to certification) having an SPR attribute that is not in the “RDE” state. For this reason, the head position and the end position of the defect entry 23 of the SPR attribute in the “RDE” state are searched, and the number of defect entries 23 included between them is set as the SPR attribute total number information to be certified.

  Each attribute head position pointer 44 sets the position of the first defect entry 23 included in the latest defect list information 40 to 0, and uses each attribute total number information 43 as the offset value from the head position as the head of each attribute. It is set by calculating the position. The head position of the defect entry 23 having the SPR attribute is the head position of the defect entry 23 in the “RDE” state.

  The latest defect list information 40 is updated when a defective block is newly detected from the optical disc medium 1 or when data can be normally recorded in a block determined to be defective.

  The recording control unit 120, the reproduction control unit 130, and the certification control unit 160 may be collectively referred to as a control unit. Each component of the recording / reproducing apparatus 100 described above may be realized by hardware or may be realized by software.

(2) Quick certification processing procedure Next, a quick certification processing procedure will be described. In this embodiment, in order to perform the quick certification process once along the track path, the certification target list information 41 in which the defect entries 23 are rearranged in the physical address order of the target block is generated regardless of the entry attribute 30. Then, the certification is performed in the order indicated by the list information 41. When the quick certification process is performed, the status bit and / or PLA information of the replacement block is updated.

  FIG. 12 is a flowchart showing the quick certification format process according to the present embodiment.

  Step 1001: First, the recording control unit 120 updates information in the defect management area (DMA). Specifically, in response to an instruction from the certify control unit 160, the recording control unit 120 updates the 1stDMA to 4thDMA disk definition structure 20 (FIG. 3) to include a flag indicating that the certification process is being executed.

  Step 1002: The certification control unit 160 generates certification target list information 41. Specifically, the certification target area calculation unit 161 calculates the position information of the block to be certified from the latest defect list information 40 and adds it to the certification target list information 41.

  FIG. 13 is a flowchart showing a procedure for generating the certification target list information 41. FIG. 14 is a diagram showing the certification target list information 41.

  Step 1101: The following Step 1102 to Step 1104 are repeated for the defect entries 23 of all the entry attributes 30 to be certified. Specifically, the following processing is performed for each attribute for all the defect entries 23 of the RAD attribute, NRD attribute, SPR attribute (sub-attribute is RDE state), PBA attribute, and UNUSE attribute registered in the defect list 21. Repeatedly.

  Step 1102: The certification control unit 160 determines whether or not the defect entry 23 not added to the certification target list information 41 exists in the defect entry 23 of the target entry attribute 30. For example, it is checked whether or not all the attribute total number information 43 has been added to the certification target list information 41, and if it is less than the number, it is determined that there is information that has not been added yet. .

  Step 1103: The certification target area calculation unit 161 acquires the minimum physical address information in the target entry attribute 30. As shown in FIG. 11, the defect entries 23 are sorted for each entry attribute 30, and each attribute head position pointer 44 indicates the processing target head position of each attribute. The physical address of the defective block of the defect entry 23 pointed to by each attribute head position pointer 44 is acquired. In addition, when the acquisition of the physical address is completed, the certification target area calculation unit 161 updates each attribute head position pointer 44 to indicate the position of the next defect entry in the same attribute.

  Step 1104: The certification target area calculation unit 161 registers the physical address information acquired in step 1103 in the certification target list information 41. At this time, the certification target list information 41 is added so that the physical address information is sorted in ascending order. Once added, return to step 1102.

  Step 1105: If processing has not been completed for all the entry attributes 30 to be certified, the process returns to step 1101 for the next entry attribute 30. If the process is completed for all the entry attributes 30 to be certified, the process ends.

  Referring to FIG. 14, the leading physical address (4 byte information) of the defective block registered in all defective entries 23 excluding the SPR attribute (not subject to certification) whose sub attribute is not RDE is extracted, and the type of entry attribute 30 Regardless of this, the certification target list information 41 arranged in ascending order of physical addresses is generated. For the defect entry 23 having a PBA attribute that may extend over a plurality of blocks, all the top physical addresses of the blocks included in the indicated area are extracted and registered in the certification target list information 41.

  In the example illustrated in FIG. 14, the certification target list information 41 is described as a list of only the 4-byte physical address information to be certified, but is not limited thereto. For example, the information may be managed in a form in which the top physical address information and the number of continuous blocks are combined so that continuous areas can be collectively managed.

  At the end of the certification target list information 41, identification information (= a value that can never be taken as a physical address. For example, a 4-byte value of FFFFFFFFh in hexadecimal) is given.

  Referring to FIG. 12 again, the quick certification format processing procedure will be described.

  Step 1003: The certification control unit 160 initializes information about the held defect list 21, that is, the latest defect list information 40. Specifically, only the defect entry 23 having the SPR attribute (the sub attribute 32 is not in the RDE state) having all the blocks in the spare areas 15a and 15b as the replacement position information 33 exists, and the defect entry 23 having the other entry attribute 30 is present. The defect list 21 that does not exist is the latest defect list information 40.

  Step 1004: The certification target area calculation unit 161 calculates a certification target area. Specifically, the certification target area calculation unit 161 calculates the physical address and the number of continuous blocks for starting certification from the certification target list information 41 generated in step 1002. For example, in the certification target list information 41 shown in FIG. 14, since the physical addresses 100060h, 1000080h, and 1000A0 are continuous, the certification start physical address is 100060h and the number of continuous blocks is 3.

  When the physical address information registered in the certification target list information 41 indicates continuous blocks, the number of those blocks is also incorporated into the number of continuous blocks.

  By doing so, it becomes possible to carry out certification for a plurality of consecutive blocks at once, and the processing performance can be improved compared to the case where certification is carried out for each block.

  The certification target area calculation unit 161 may hold a pointer indicating the physical address of the next certification target in the list information 41. This pointer indicates the head physical address in the certification target list information 41 in the initial state, and when the calculation of the certification target area including the physical address indicated by the pointer is completed, the pointer indicates the physical address that has not yet been calculated. As updated. By using such a pointer, the certification target area can be easily calculated when the processing of step 1004 is requested next.

  Step 1005: The certification control unit 160 determines whether or not a certification target area exists. Specifically, the certify controller 160 determines that the certification start physical address calculated in step 1004 is a physical address on the disk (that is, not FFFFFFFFh, which is information indicating the end), or the number of consecutive blocks is 0. If not, it is determined that the certification target area exists.

  Step 1006: If it is determined that the certification target area exists, the certification control unit 160 performs certification. Specifically, the certification control unit 160 requests the certification execution unit 170 to perform certification on the area calculated in step 1004, and the certification execution unit 170 performs certification on that area.

  Step 1007: From the certification result by the certification execution unit 170, the certification control unit 160 determines whether there is an area where certification has failed.

  Step 1008: If it is determined that there is an area where certification has failed, the certification control unit 160 holds information indicating the area where the certification has failed. Specifically, the certification control unit 160 adds the head physical address of the block in error to the certification result list information 42.

  If the address of the block in error is added to the certification result list information 42, or if it is determined in step 1007 that there is no error block, the processing returns to step 1004. The processing from step 1004 to step 1008 is repeated until it is determined in step 1005 that the certification target area does not exist.

  Step 1009: The defect entry operation unit 162 registers all areas in which an error has occurred in the certification in the defect list 21. Specifically, the defect entry operation unit 162 registers, in the latest defect list information 40, the defect entry 23 in which all physical address blocks registered in the certification result list information 42 are defective blocks. If the block in error is a block in the user data area 14, a defect entry 23 having an RAD0 attribute with the physical address as the defect position information 31 is generated. If the block in error is a block in the spare area 15, a defect entry 23 having an UNUSE attribute having the physical address as the replacement position information 33 is generated. Further, the total number information of each entry attribute and the total number information 43 of attributes included in the defect list header 22 are also updated.

  When step 1009 is completed, the latest defect list information 40 reflecting the certification result is generated.

  The defect entry operation unit 162 selects an optimum block from the blocks registered in the replacement position information 33 of the defect entry 23 having the SPR attribute and assigns it as a replacement block of the defect entry 23 having the RAD0 attribute. Accordingly, the defect entry 23 having the SPR attribute that originally registered the block selected as the replacement block is deleted. Alternatively, the defect entry 23 having the SPR attribute may be replaced with the defect entry 23 having the RAD0 attribute.

  Here, the above-mentioned optimal block is, for example, a block located at the closest distance from the replacement source block (the block closest to the radial distance), but may be a block closest to the physical address distance. It is selected according to the disk usage status at that time.

  Similarly, along with the registration of the UNUSE attribute defect entry 23, the SPR attribute defect entry 23 that originally registered the block included in the UNUSE attribute defect entry 23 is deleted. Alternatively, the defect entry 23 having the SPR attribute may be replaced with the defect entry 23 having the UNUSE attribute.

  Step 1010: The certification control unit 160 clears flag information indicating a status bit (FIG. 6) of a block assigned as a replacement block. Here, clearing is, for example, a process of rewriting flag information so as to indicate that all valid data exists in the block. Specifically, the clear target area calculation unit 163 calculates the physical address information of the replacement block indicated by the defect entry 23 having the RAD0 attribute, and sets the status bit of the replacement block to a value other than “10” (see FIG. 6 (a)). For example, the certification control unit 160 requests the recording control unit 120 to record padding data (arbitrary data having no meaning as data) in the replacement block indicated by the defect entry 23 having the RAD0 attribute, and the recording control unit 120. Sets the value of the status bit to “11” indicating the padding attribute.

  Step 1011: The recording control unit 120 updates the defect management area (DMA). Specifically, the certification control unit 160 requests the recording control unit 120 to record the latest defect list information 40 generated in step 1009 in the DMA as the defect list 21, and the recording control unit 120 records from 1st DMA to 4th DMA. Do. At this time, the flag indicating the certification processing execution state included in the disk definition structure 20 is also cleared.

  This completes the quick certification process.

  As described above, when the quick certification format is performed, the status bit of the replacement destination block of the defect entry 23 having the RAD0 attribute is rewritten to a value other than “10”, that is, changed to a state that is not in the Discard state. If it is determined in step 803 of the PLA tracing process (FIG. 9) that the read data is not in the discard state, the replacement source block indicated by the PLA is not accessed. The status bit of the replacement block is rewritten to a value other than “10”, that is, the status bit is rewritten to indicate that the PLA is invalid, thereby performing useless PLA tracing processing when the replacement block is read. And the processing performance can be improved.

  In addition, useless PLA tracing processing may be prevented by rewriting PLA with dummy information. For example, by rewriting the PLA to an invalid value that is not the physical address of the replacement source block and proceeding from the processing in step 803 to the processing in step 806, it is possible to prevent useless PLA tracing processing.

  Further, by generating certification target list information 41 in which defective blocks to be certified are sorted in the order of physical addresses along the track path, and performing certification in the order indicated by the list, all the targets are recorded at once along the track path. Blocks can be certified and processing performance can be improved.

  The certification target list information 41 is described as a list of only 4-byte physical address information of the certification target block, but is not limited thereto. For example, the information may be managed in a form in which the top physical address information and the number of continuous blocks are combined so that continuous areas can be collectively managed. Further, the certification result list information 42 has been described as a list of only 4-byte physical address information of a block in which certification has failed. However, the present invention is not limited to this, and the leading physical address information is used so that continuous areas can be managed collectively. And information may be managed in a format combining the number of continuous blocks.

  Note that the data recorded in step 1010 (FIG. 12) does not have to be padding data. For example, if the status bit can be rewritten to data other than “10”, such as All 00h data with the status bit set to “00”. Good.

  In the process of step 1010, it is not necessary to rewrite all the data of the target block, and it is sufficient that at least the status bit of the target block can be set to a value other than “10”. For example, a process of rewriting only the status bit to “11” may be used.

  Further, in the processing of step 1010, the status bit update target is only the replacement block of the defect entry 23 with the RAD0 attribute, but is not limited to this. For example, a spare that may be used as a replacement destination Processing may be performed on all blocks in the area. Alternatively, it is possible to update only the status bit of the replacement block in the Discard state.

  Further, in the processing of step 1008 and step 1009, all blocks in error are registered after registering the blocks in error in the certification result list information 42 and completing the certification for all certification target areas. Is registered in the latest defect list information 40, but is not limited to this processing procedure. For example, without using the certification result list information 42, the processing of step 1009 is performed immediately after the processing of step 1008. That is, each time a block having an error in certification is detected, the corresponding defect entry 23 is updated to the latest defect list information. 40 may be registered.

  As one of the BD-RE format processes, there is a format process called “Quick Format”. In this process, all the registered defect entries 23 are re-registered as defect entries 23 having an RDE status PBA attribute or an RDE status SPR attribute. This processing can be realized by modifying a part of the quick certification processing procedure described above. For example, without performing the processing of step 1006 (FIG. 12), it is always determined as an error in step 1007, and the defective block is registered in the certification result list information. In the process of step 1009, the defective block in the user data area is registered in the PDE attribute defect entry 23 in the RDE state. Further, the defective block in the spare area is registered with the defect entry 23 having the SPR attribute in the RDE state. This makes it possible to realize “Quick Format”. As described above, by performing “Quick Format” using a part of the quick certification processing procedure, it is possible to suppress the complexity of the processing circuit.

(Embodiment 2)
(1) Recording / Reproducing Device Next, a recording / reproducing device according to a second embodiment of the present invention will be described. FIG. 15 is a diagram showing the recording / reproducing apparatus 100 of the present embodiment. The recording / reproducing apparatus 100 of the present embodiment includes the same components as the recording / reproducing apparatus 100 of the first embodiment, but the certification information storage memory 164 includes certification target list information 41 and certification result list information 42. Not stored. Further, the processing program executed by the certification control unit 160 is different. Details of the processing will be described later.

  The initial setting of each attribute total number information 43 and each attribute head position pointer 44 is performed by the certify control unit 160 using the latest defect list information 40, as in the processing in the first embodiment.

(2) Quick certification processing procedure In this embodiment, using the information of the defect list 21 as it is, the quick certification processing is performed once along the track path, and the status bit and / or PLA information of the replacement destination block is obtained. Update.

  FIG. 16 is a flowchart showing the quick certificate format process of the present embodiment. FIG. 17 shows an example of the defect list 21 (latest defect list information 40).

  Step 1401: First, the recording control unit 120 updates the defect management area (DMA). Specifically, in response to an instruction from the certify control unit 160, the recording control unit 120 updates the 1stDMA to 4thDMA disk definition structure (FIG. 3) so as to include a flag indicating that the certification process is being executed.

  Step 1402: The certification target area calculation unit 161 calculates a certification target area. Specifically, the certification target area calculation unit 161 calculates, as certification start physical address information, the physical address of the block having the smallest physical address among the blocks pointed to by the attribute head position pointer 44 (FIG. 17). . Further, the pointer 44 is updated so that the block next to the block with the smallest physical address (the block with the same entry attribute) is pointed out.

  If there is a block in which the physical address selected earlier and the block having the smallest physical address exist among the blocks pointed to by the updated pointer 44, the processing is the same as in step 1004 (FIG. 12). The number of continuous blocks is calculated as the number of continuous blocks. By doing so, it becomes possible to carry out certification for a plurality of continuous blocks all at once, and the processing performance can be improved as compared with the case where certification is carried out for each block.

  For example, in the list shown in FIG. 17, the minimum physical address among the physical addresses of the certification target blocks is 100060h of the SPR attribute in the RDE state. Since this physical address 100060h is consecutive with UNUSE attributes 100080h and 1000A0h, it is calculated in the form that the certification start physical address is 100060h and the number of consecutive blocks is 3.

  When the certification target area does not exist, the certification start physical address information is calculated as FFFFFFFFh, or the number of consecutive blocks is calculated as zero.

  Step 1403: The certification control unit 160 determines whether or not a certification target area exists. Specifically, the certification control unit 160 is the certification start physical address information calculated in step 1402 if it is physical address information on the disk (that is, if it is not FFFFFFFFh which is information indicating the end), or the number of consecutive blocks If is not 0, it is determined that the certification target area exists.

  Step 1404: If it is determined that the certification target area exists, the certification control unit 160 performs certification. Specifically, the certification control unit 160 requests the certification execution unit 170 to perform certification on the area calculated in step 1402, and the certification execution unit 170 performs certification on that area.

  Step 1405: From the certification result by the certification execution unit 170, the certification control unit 160 determines whether there is an area that has been successfully certified.

  Step 1406: When it is determined that there is an area that has been successfully certified, the defect entry operation unit 162 deletes or updates the defect entry 23 corresponding to the area (block) that has been successfully certified from the latest defect list information 40.

  For example, when the certification to the block of the defect entry 23 having the RAD0 attribute is successful, the defect entry operation unit 162 re-registers the replacement block of the defect entry 23 as the defect entry 23 having the SPR attribute (not in the RDE state). At the same time, the defect entry 23 having the RAD0 attribute is deleted. Alternatively, the defect entry 23 having the RAD0 attribute is changed to the defect entry 23 having the SPR attribute (not in the RDE state).

  Similarly, when the certification to the block of the defect entry 23 having the UNUSE attribute and the SPR attribute (RDE state) is successful, the replacement block is re-registered as the defect entry 23 having the SPR attribute (not in the RDE state), and the UNUSE attribute or The defect entry 23 having the SPR attribute (RDE state) is deleted. Alternatively, the defect entry 23 having the UNUSE attribute or SPR attribute (RDE state) is changed to the defect entry 23 having the SPR attribute (not RDE state).

  When the certification to the block of the defect entry 23 having the NRD attribute is successful, the defect entry 23 is deleted.

  When the certification of all the areas registered in the defect entry 23 with the PBA attribute is successful, the defect entry 23 is deleted. If the certification of a part of the area registered in the defect entry 23 with the PBA attribute is successful, the successful block is re-registered as the defect entry 23 with the PBA attribute indicating the number of consecutive blocks deleted.

  Step 1407: The certification control unit 160 updates the pointer information. Specifically, the certification control unit 160 updates each attribute head position pointer 44 in accordance with the deletion and / or update of the defect entry 23 in the process of step 1406, and each of the defect list headers 22. The total number information of the entry attributes 30 and each attribute total number information 43 are also updated.

  When the update of each attribute head position pointer 44 is completed, or when it is determined in the process of step 1405 that there is no successful block, the process returns to step 1402. The processing from step 1402 to step 1407 is repeated until it is determined in the processing of step 1403 that there is no certification target area.

  Step 1408: The certification control unit 160 clears the status bit (FIG. 6) of the replacement block. Specifically, the clear target area calculation unit 163 calculates the physical address information of the replacement block indicated by the defect entry 23 of the RAD attribute from the defect entries 23 of the blocks that have failed certification, and the replacement target block The status bit is set to a value other than “10” (FIG. 6A). For example, the certification control unit 160 requests the recording control unit 120 to record padding data in the replacement block indicated by the defect entry 23 having the RAD0 attribute, and the recording control unit 120 sets the value of the status bit to the padding attribute. “11” shown.

  Step 1409: The recording control unit 120 updates the defect management area (DMA). Specifically, the certification control unit 160 requests the recording control unit 120 to record the latest defect list information 40 generated in steps 1402 to 1407 as the defect list 21 in the DMA, and the recording control unit 120 starts from the 1st DMA. Recording is performed in 4th DMA. At this time, the flag indicating the certification processing execution state included in the disk definition structure 20 is also cleared.

  This completes the quick certification process.

  As described above, when the quick certification format is performed, the status bit of the replacement destination block of the defect entry 23 having the RAD0 attribute is rewritten to a value other than “10”, that is, changed to a state that is not in the Discard state. As a result, unnecessary PLA tracing processing is not performed when the replacement block is read, and the processing performance can be improved.

  Also, by performing certification in the order of physical addresses along the track path for all defective blocks subject to certification, all the target blocks can be certified at one time along the track path. Can be improved.

  Note that the data recorded in step 1408 (FIG. 15) need not be padding data. For example, if the status bit can be rewritten to data other than “10”, such as All 00h data with the status bit set to “00”. Good.

  In the processing of step 1408, it is not necessary to rewrite all the data of the target block, and it is sufficient that at least the status bit of the target block can be set to a value other than “10”. For example, a process of rewriting only the status bit to “11” may be used.

  In the processing in step 1408, the status bit is updated only for the replacement destination block of the defect entry 23 having the RAD0 attribute, but is not limited to this. For example, a spare that may be used as a replacement destination Processing may be performed on all blocks in the area.

  Further, as a process other than the processes of the first and second embodiments described above, a process of certifying all target blocks at once along the track path by obtaining a block having the smallest physical address in the defect list 21 every time. You may go.

  In the processing of the first and second embodiments described above, certification is performed in order from the block having the smallest physical address, that is, in ascending order along the track path, but the present invention is not limited to this. For example, the same effect can be obtained by performing certification in order from the block with the largest physical address, that is, in descending order, in the direction opposite to the track path.

  In the above-described processing of the first and second embodiments, the BD-RE that is a rewritable BD has been described as an example. However, the medium to which the above-described processing is applied is not limited to the BD-RE, and the BD-RE flag. It can also be applied to media having information similar to bits (status bits).

  In the processing of the first and second embodiments described above, the quick certification format has been described as an example. However, the present invention is not limited to the quick certification format, and the present invention is a defect entry (corresponding to a RAD attribute) indicating a replacement destination block. Can be applied to processes that exist after formatting.

  The present invention is particularly useful in the technical field relating to format processing of information recording media.

It is a figure which shows the area | region structure of an optical disk medium. It is a figure which shows the data format of BD. It is a figure which shows the structure of an optical disk medium. (A) And (b) is a figure explaining a defect entry. It is a figure explaining the RMW process of an optical disk medium. (A) And (b) is a figure explaining a status bit. (A) And (b) is a figure which shows the relationship between PLA and a defect entry. (A) And (b) is a figure explaining the complementation process with respect to the data of a Discard state. It is a flowchart which shows a PLA tracing process. It is a figure which shows the recording / reproducing apparatus by Embodiment 1 of this invention. It is a figure which shows the defect list by Embodiment 1 of this invention. It is a flowchart which shows the quick certification format process by Embodiment 1 of this invention. It is a flowchart which shows the process which produces | generates certification | authentication object list information by Embodiment 1 of this invention. It is a figure which shows the certification | authentication object list information by Embodiment 1 of this invention. It is a figure which shows the recording / reproducing apparatus by Embodiment 2 of this invention. It is a flowchart which shows the process of the quick certification format by Embodiment 2 of this invention. It is a figure which shows the defect list by Embodiment 2 of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Optical disk medium 2 Track 3 Block 4 Lead-in area 5 Data area 6 Lead-out area 10, 11, 12, 13 Defect management area (DMA)
14 User data area 15a, 15b Spare area 20 Disk definition structure (DDS)
21 Defect List (DFL)
22 Defect list header 23 Defect entry 30 Entry attribute 31 Defect position information 32 Sub attribute 33 Replacement position information 40 Latest defect list information 41 Certification target list information 42 Certification result list information 43 Total number information of each attribute 44 Each attribute head position pointer 100 Recording Playback device 110 Command processing unit 120 Recording control unit 130 Playback control unit 140 Defect list storage buffer 150 Data buffer 160 Certification control unit 161 Certification target region calculation unit 162 Defect entry operation unit 163 Clearing target region calculation unit 164 Certification information storage memory 170 Certification Execution unit 180 Optical head unit 190 I / O bus

Claims (6)

An apparatus for performing format processing of an information recording medium,
The information recording medium includes a data area,
The data area includes a user data area and a spare area,
The user data area is an area where user data is recorded,
The spare area includes a replacement block used in place of a defective block in the user data area or the spare area,
The replacement block includes instruction information indicating that a part of the replacement block does not include valid data,
The instruction information includes status information indicating the state of valid data included in the replacement block, and address information indicating the position of the defective block,
The apparatus includes a control unit that controls the formatting process.
The controller clears at least the status information so as to indicate that valid data included in the replacement block does not exist in the defective block when performing the formatting process . The apparatus according to claim 1, wherein the control unit performs a process of updating information included in the replacement block when performing a quick certification process as the formatting process. An apparatus for performing format processing of an information recording medium,
The information recording medium includes a data area,
The data area includes a user data area and a spare area,
The user data area is an area where user data is recorded,
The spare area includes a replacement block used in place of a defective block in the user data area or the spare area,
The replacement block includes instruction information indicating that a part of the replacement block does not include valid data,
The instruction information includes status information indicating the state of valid data included in the replacement block, and address information indicating the position of the defective block,
The apparatus includes a control unit that controls the formatting process.
The control device updates at least the address information to dummy information so as to indicate that valid data included in the replacement block does not exist in the defective block when performing the formatting process. The apparatus according to claim 3 , wherein the control unit performs a process of updating information included in the replacement block when performing a quick certification process as the formatting process. A method for formatting an information recording medium,
The information recording medium includes a data area,
The data area includes a user data area and a spare area,
The user data area is an area where user data is recorded,
The spare area includes a replacement block used in place of a defective block in the user data area or the spare area,
The replacement block includes instruction information indicating that a part of the replacement block does not include valid data,
The instruction information includes status information indicating the state of valid data included in the replacement block, and address information indicating the position of the defective block,
The format process includes a defect block process for performing the process on the defective block,
The method
Performing the defective block processing on the defective block;
Clearing at least the status information to indicate that valid data contained in the replacement block does not exist in the defective block . A method for formatting an information recording medium,
The information recording medium includes a data area,
The data area includes a user data area and a spare area,
The user data area is an area where user data is recorded,
The spare area includes a replacement block used in place of a defective block in the user data area or the spare area,
The replacement block includes instruction information indicating that a part of the replacement block does not include valid data,
The instruction information includes status information indicating the state of valid data included in the replacement block, and address information indicating the position of the defective block,
The format process includes a defect block process for performing the process on the defective block,
The method
Performing the defective block processing on the defective block;
Updating at least the address information to dummy information to indicate that valid data included in the replacement block does not exist in the defective block;
Including the method.

Images