JP2006268948A - Disk recording device, and method for recording disk recording management information - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an optical disk device capable of improving the reliability of data recording, and its control method. <P>SOLUTION: The recording device control method for a recording medium performs a verify operation of determining correct recording by comparing reproduced data with recorded data during the reproduction of the recorded data. When the verify operation is executed a plurality of times, the recording medium is provided with a recording management area for recording recording management information and a plurality of recorded management data to be recorded in the recording management area corresponding to the recording mode, and a table for indicating the state of the recording management data recording area is provided. The recording device defines a plurality of recording modes for the rewritable recording medium and records data in the recording medium according to the defined recording modes. The recording medium has a recording management area for recording recording management information and a plurality of recording management data to be recorded in the recording management area corresponding to the recording mode, and a table for indicating the state of the recording management data recording area is provided. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a technique for controlling a recording management area of a recording medium in which a plurality of recording modes are defined in a recording medium such as a rewritable optical disk.

  Recently, the need for a large-capacity recording medium has increased with the increase in opportunities to handle multimedia data including moving image data. By the way, an optical recording medium such as a DVD-RW disk, which is a kind of large-capacity optical storage medium, records information by irradiating the optical recording medium with a light beam and causing an optical change in the recording material. A rewritable phase change optical recording medium that can be used.

  FIG. 16 is a diagram showing an example of the disc structure of DVD-RW. As shown in FIG. 16, the DVD-RW disc has an R-Information area provided on the inner peripheral side and an Information area provided on the outer peripheral side. The information area includes a lead-in area, a data recording area, and a lead-out area. The R-Information area includes a PCA (Power Calibration Area) in which the drive adjusts recording power and an RMA (Recording Management Area) in which recording management information is recorded.

  FIG. 17 shows the details of the RMA structure. As shown in FIG. 17A, the RMA has one RMA lead-in and 700 RMD (Recording Management Data) recording areas. As shown in FIG. 17 (2), one RMD has a Linking Loss area of 2 KB (1 sector) and 15 fields (sectors). Formats of RMD include Format 1 RMD, Format 2 RMD, Format 3 Three RMD Formats are defined.

  In the DVD-RW disc, two recording methods of a sequential recording mode and a restricted overwrite mode are defined. Sequential recording mode is a method of recording a DVD-RW disc in the same way as a write-once optical disc such as DVD-R. Restricted overwrite mode is limited. This is a recording method that allows overwriting. Depending on the two recording modes, the RMA structure also differs.

  FIG. 19 is a diagram showing an RMA structure in Restricted overwrite mode. As shown in FIG. 19, in the restricted overwrite mode RMA structure, 700 RMD recording areas excluding the RMA lead-in from the RMA can be divided into five segments (RMA Segment # 1 to RMA Segment # 5). Each RMA Segment is divided into 28 RMD Sets each having a single RMD recording area (RMD Set # 1 to RMD Set # 28). Each RMD Set is divided into five RMD Blocks.

  FIG. 20 is a diagram showing the RMD Format recorded in the Restricted overwrite mode, and FIG. 18 is a diagram showing the definition of Format2 RMD Field1.

  When recording on the DVD-RW disc in the Restricted overwrite mode, as shown in FIG. 20 (a), five Format2 RMDs are recorded in the first RMD Set # 1 of the RMA Segment, and Format3 RMD is recorded in the RMD Set # 2. Record five. The definition of Format 2 RMD Field 1 is shown in FIG. As shown in FIG. 18, a field called Format3 RMD Set Pointer is prepared in Field1. This Format3 RMD Set Pointer indicates where a valid Format3 RMD is written. Further, the value of the Update Counter field is incremented by 1 every time Format 2 RMD is recorded. In the case of FIG. 20A, RMA Set # 2 of RMA Segment # 1 is a valid Format3 RMD Set, and this position is indicated. Information related to recording in the user area is recorded not in Format 2 RMD but in Format 3 RMD. For this reason, in the Restricted overwrite mode, rewriting of Format3 RMD frequently occurs.

  In general, a phase-change-type rewritable optical disk is recorded by heating and melting a recording film. Therefore, if rewriting is performed several times, defects in the film increase and errors tend to increase. .

  The same applies to RMD recording in the RMA area, and the number of errors increases when RMD information recording is repeated many times at the same position. Since the RMD records information related to the recording of the user data area, if the RMD cannot be read, it is not possible to know where to record the disk. Therefore, an RMD replacement area is prepared.

  FIG. 20B and FIG. 20C show the state when the RMD with the increased number of read errors is moved. FIG. 20B shows how the Format3 RMD moves. When the number of read errors of Format3 RMD in RMD Set # 2 of RMA Segment # 1 increases, Format3 RMD moves to RMD Set # 3, which is an adjacent RMD Set (see (a) of FIG. 20B). ). When Format3 RMD Set moves, Format3 RMD Set Pointer of Format2 RMD Set must be rewritten. Also, RSDS # 2 to RSDS # 28 are assigned to Bytes 16-19 of FIG. 18, which is called RMA Segment Defect Status, and RMD Set # 2 to RMD Set # 28 for recording Format3 RMD of the RMA Segment. The state of RMD Set up to is shown. When this Format3 RMD Set cannot be read / written, that is, when it cannot be recorded in this RMD Set, or when the number of errors is large even if three or more RMD Blocks are read, it is determined as defective and the corresponding bit is set to 1. Set.

  When the Format3 RMD Set is recorded several times in the RMD Set # 3 in the state of (a) in FIG. 20B and the number of read errors of the Format3 RMD in the RMD Set # 3 increases, the Format3 RMD becomes the next RMD Set. Move to a certain RMD Set # 4 (see (b) of FIG. 20B). Similarly, when the number of errors in Format 3 RMD of RMD Set # 4 increases, the process moves to RMD Set # 5. When the number of errors in RMD Set increases, the process moves to RMD Set # 6, and so on. Here, Format2 RMD increments the Update Counter shown in FIG. 18 every time Format3 RMD moves, and Format3 RMD Set Pointer points to the head of the next RMD Set, and also updates RSDS.

  Further, when the number of errors of Format3 RMD in RMD Set # 28 increases, segment movement occurs as shown in (c) of FIG. 20B, and Format2 RMD is the RMD of RMA Segment # 2, which is the adjacent RMA Segment. Move to Set # 1, and Format3 RMD moves to RMD Set # 2 of RMA Segment # 2. At this time, the value of Update Counter in Field 1 of Format 2 RMD is also incremented by one. When the value of Update Counter of RMD Set # 1 of RMA Segment # 1 is compared with the value of Update Counter of RMD Set # 1 of RMA Segment # 2, the value of Update Counter written in RMD Set # 1 of RMA Segment # 2 Is bigger. By examining the RMA segment having the largest value, an effective RMA segment can be known.

  Next, FIG. 20C shows how the Format2 RMD moves. Since Format2 RMD is to be recorded in RMD Set # 1 of each RMA Segment, when the number of errors in Format2 RMD increases, it moves to the next RMA Segment. FIG. 20 (c) shows the movement when the number of errors in Format 2 RMD increases when Format 2 RMD recorded in RMD Set # 1 of RMA Segment # 1 has Format 3 RMD written in RMA Set # 3. It represents the situation. When the number of errors in Format2 RMD increases, Format2 RMD Set moves to RMD Set # 1 of RMA Segment # 2, which is an adjacent RMA Segment. At this time, Format3 RMD is also moved to RMD Set # 2 of RMA Segment # 2. Since Format 2 RMD Set moves to the adjacent RMA Segment # 2, Update Counter is incremented by one. Therefore, it can be seen that RMA Segment # 2 is more effective because RMA Segment # 2 has an update counter larger than RMA Segment # 1.

  FIG. 21 is a diagram showing an RMA structure of Sequential recording mode. The RMA structure of Sequential recording mode in FIG. 21 divides 700 RMD recording areas excluding RMA Lead-in into the first five RMD recording areas and the remaining 695 RMD recording areas. Are called 1st Part and 2nd Part, respectively. 1st Part writes 5 Format2 RMDs. The 2nd Part is an area for recording Format1 RMD, and Format1 RMD is recorded in RMD # 6. As described above, in the Sequential Recording Mode, five Format2 RMDs and at least one Format1 RMD are recorded.

  FIG. 22 is a diagram showing additional recording of RMD in the Sequential recording mode. As shown in FIG. 22, since the Sequential recording mode is a mode in which recording is performed while overwriting without overwriting, Format 1 RMD is additionally written when Format 1 RMD needs to be updated. FIG. 22 shows how Format1 RMD is added. When it is necessary to record Format1 RMD in the state where 5 Format2 RMD is already written in 1st Part and 1 Format1 RMD is written in 2nd Part, Format1 RMD is newly recorded next to Format1 RMD. In this way, when Format 1 RMD recording is required, always valid Format 1 RMD is additionally written by 1 ECC on the outer peripheral side.

  Since the DVD-RW disc can be overwritten, the recording mode can be shifted from the Restricted Overwrite Mode to the Sequential Recording Mode and from the Sequential Recording Mode to the Restricted Overwrite Mode by performing Blank or Format.

  FIG. 23 is a diagram illustrating a transition from the restricted overwrite mode to the sequential recording mode and the restricted overwrite mode. FIG. 23 shows a state in which a Blank command and a Format command are issued from the Restricted Overwrite Mode and a transition is made to the Sequential Recording Mode and the Restricted Overwrite Mode. FIG. 23A shows a state in which Format2 RMD Set and Format3 RMD Set effective for RMA Segment # 4 have moved due to recording failure or read error increase due to scratches on Format2 RMD Set or Format3 RMD Set. Further, RMD Set # 2 of RMA Segment # 4 has also moved from Format3 RMD Set to RMD Set # 3 due to an increase in the number of errors. When the Blank command is issued to such a disk, as shown in FIG. 23B, five Format2 RMD Sets and one Format1 RMD Set are recorded at the head of the RMA. At this time, RSDS information is recorded in Field 1 of Format 2 RMD of RMA Segment # 1, RMA Segment # 2, and RMA Segment # 3 in FIG. 23 (a), but the mode is changed as shown in FIG. 23 (b). If changed, the RSDS information of the RMA Segment # 1 Format2 RMD can be taken over, but the RDS information of the RMA Segment # 2 and RMA Segment # 3 Format2 RMD is lost. For this reason, generally, when the mode is changed, the RSDS information of Format 2 RMD of RMA Segment # 1 is often reset to 0. When the Format command is issued from this state, Format 2 RMD Set and Format 3 RMD Set are recorded in RMD Set # 1 and RMD Set # 2 of RMA Segment # 1, as shown in FIG. In FIG. 23A before issuing the Blank command and the Format command, the valid Format2 RMD Set and Format3 RMD Set were in RMA Segment # 4. This is because either RMD Set # 1 or RMD Set # 2 of RMA Segment # 1, RMA Segment # 2, or RAM Segment # 3 could not be recorded due to a past flaw or the like, or the number of read errors was This indicates that the RMD moved due to the increase, and then the number of errors increased several times, so that the valid RMD moved to RMA Segment # 4. However, in FIG. 23 (c), it is recorded at a position where the number of errors has increased in the past. If the number of errors in verification after recording is large, movement of RMD occurs. However, movement does not occur unless the error number of the condition that causes movement in verification at the time of recording happens to be reached. However, if the servo adjustment value slightly deviates during subsequent restarts, the number of errors may increase rapidly and become unreadable. The RMD records recording management information. If this information cannot be read, recording to the disc becomes impossible. Therefore, an alternative is considered when the number of errors increases. However, as shown in FIG. 23 (c), if it is recorded at a position where the number of errors has increased in the past, it will deviate from this point and will be recorded again at a position where the number of errors has increased. There was a problem.

  The present invention has been made in view of such problems, and an object of the present invention is to provide a recording management information recording method for a disc that can improve the reliability of RMD read even if recording mode conversion frequently occurs. And

  It is another object of the present invention to provide a recording management information recording method for a disc that can identify user specific data even if another disc recording device uses User Specific Data for another purpose.

  In order to solve the above problems, the present invention is characterized by having an RMD status table indicating the RMD statuses of RMD # 1 to # 700 that can be recorded in the RMA area. The RMD status table is used to replace RMD, and the RMD status table is used to convert the recording method between the restricted overwrite mode and the sequential recording mode.

  Alternatively, it has a state table in units of RMD Set in which 700 RMDs that can be recorded in the RMA area are grouped in groups of five, and this RMD Set unit state table is used to replace RMD or Restricted overwrite mode. And means for converting the recording system between Sequential Recording mode.

  It also has means for managing RMD so that the RMD status table and RMD Set unit status table can be recorded in RMD Field 2, and that User Specific Data is recorded in the RMD status table and RMD Set unit status table. Means for recording together with the RMD state table identifier or the RMD Set state table identifier shown.

  In addition, when loading a disk recorded by a disk recording apparatus that does not have an RMD status table or an RMD Set unit status table, it has means for generating an RMD status table or an RMD Set status table.

  According to the present invention, by using 700 RMD status tables or 140 RMD Set status tables recorded in the RMA area, there are a plurality of recording modes such as the Restrictive overwrite mode and Sequential Recording mode. Even if the recording mode conversion occurs frequently, the RMD read is not performed because the RMD is not recorded in the RMD area where the recording could not be performed even once or the EDC error occurred. Reliability is improved. In addition, since the User Specific area is used, it is compatible with a drive that does not use the method as in the present invention, and the present invention can be obtained by attaching a unique identifier to the RMD status table or the RMD Set status table. Even if another disc recording apparatus that is not implemented uses User Specific Data for another purpose, it can be identified.

  Hereinafter, a recording technique for recording management information on a disc according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings. First, a recording technique for recording management information on a disc according to the first embodiment of the present invention will be described with reference to the drawings.

  FIG. 1 is a diagram showing a configuration example of an RMD status table of a recording management information recording method for a disc according to the first embodiment of the present invention. As shown in FIG. 1, in the RMD status table according to the present embodiment, the RMD is composed of a 2 KB (1 sector) Linking Loss area and 15 fields (sectors) as shown in FIG. The RMD defines three Formats, Format 1 RMD, Format 2 RMD, and Format 3 RMD. In each of the three Formats, an RMD Field 2 is provided with an area that can be freely recorded by the user as User Specific Data. A table indicating the state of RMD is recorded on this 2048-byte User Specific Data. For example, an RMD status table for recording User Specific Data is defined as shown in FIG. In each byte, Bits 7 to 5 are allocated to Reserved, and Bits 4 to 0 are allocated to five RMD states. RMD # 1 to RMD # 5 are assigned to Bit0 to Bit4 of Byte0, and RMD # 6 to RMD # 10 are assigned to Bit0 to Bit4 of Byte1.

  Similarly, RMD is assigned to bit 0 to bit 4 of each byte as shown in FIG. From another viewpoint, one byte represents the state of one RMD Set. Of the 2048-byte data in the User Specific Data area, 28 bytes of bytes 0 to 27 indicate the state of RMD Set # 1 to RMD Set 28 of RMA Segment # 1, and 28 bytes of bytes 28 to 55 indicate RMD Set of RMA Segment # 2. The state of RMD Set 28 from bytes # 1 to RMD Set # 28, the state of RMD Set # 1 to RMD Set28 of RMA Segment # 3 with 28 bytes of bytes 56 to 83, and the number of RMD Set # 1 of RMA Segment # 4 with 28 bytes of bytes 84 to 111 To RMD Set 28, and 28 bytes from bytes 112 to 139 represent the states of RMD Set # 1 to RMD Set 28 of RMA Segment # 5.

  As described above, one bit represents one RMD state, but when the RMD was recorded, it could not be recorded, or there were many errors in the verification after recording, or there were many errors in the RMD read at startup. The RMD is moved. At this time, a state in which the number of errors in the RMD is large or damaged is defined as a defective state and represented by “1”.

FIG. 2 is a diagram illustrating a configuration example of an RMD status table with an identifier. As shown in FIG.
The RMD status table may have an identifier field at the beginning and be recorded in User Specific Data. Hereinafter, the RMD state table of FIG. 1 will be described as an example, but the same applies to the case of using the RMD state table with an identifier of FIG.

  An example of updating the RMD state defined as shown in FIG. 1 will be described with reference to FIGS. 3 and 4 together with RMD recording in the Restricted Overwrite Mode. FIG. 3 is a diagram illustrating an example of updating the RMD state table in the Restricted Overwrite Mode. FIG. 4 is a diagram illustrating an update example of the RMD Set in the Restricted Overwrite Mode when the RMD state table of FIG. 3 is used.

  In FIG. 4A, RMA Segment # 1 is an invalid RMA Segment because 3/5 or more of RMD Set in Format3 RMD Set from RMD Set # 2 to RMD Set # 28 is in a defective state. Yes. In RMA Segment # 2, RMD of 3/5 or more of Format 2 RMD Set of RMD Set # 1 is in a Defective state and is an invalid RMA Segment. RMA Segment # 3 is an effective RMD Set because RMD 2/5 of RMD Set # 2 is in a defective state, so RMD Set # 2 is an effective Format 3 RMD Set.

  An example of the state of the RMD at this time is shown in FIG. As shown in FIG. 3A, in RMA Segment # 1, 3/5 or more RMDs are in the defective state in each RMD Set from RMD Set # 2 to RMD Set # 28. In RMA Segment # 2, RMD Set # 1 is 4/5 defective and is an invalid RMA Segment. In RMA Segment # 3, RMD Set # 2 is 2/5 defective, and RMA Segment # 4 and RMA Segment # 5 are not recorded. Therefore, RMA Segment # 3 is an effective RMA Segment, and RMD Set # 2 is a valid Format # 3 RMD Set.

  Format3 When updating RMD, update 5 RMDs (RMD # 286 to RMD # 290) over RMD Set # 2 of RMA Segment # 3, and read the contents to read RMD # 286, RMD # When the number of errors of 287 and RMD # 288 also increases, bit2 ... 0 of Byte 57 corresponding to RMD # 286, RMD # 287, and RMD # 288 is set to 1 (see FIG. 3B), and Format3 RMD Set is set to RMA Segment. Move from RMD Set # 2 of # 3 to RMD Set # 3 (see FIG. 4B).

  Next, a specific RMA recording operation will be described with reference to FIGS. FIG. 5 is a diagram showing RMA recording using the RMD status table. FIG. 6 is a diagram showing RMA recording when the RMD state table of FIG. 5 is used. Assume that there is an RMD recorded as shown in FIG. In FIG. 6A, RMA Segment # 1 is an invalid RMA Segment because 3/5 or more of RMD in Format 3 RMD Set from RMD Set # 2 to RMD Set # 28 is in a defective state. Yes. In RMA Segment # 2, RMD of 3/5 or more of Format 2 RMD Set of RMD Set # 1 is in a Defective state and is an invalid RMA Segment. In RMA Segment # 3, RMD of 3/5 or more of RMD of RMD Set # 2 is in a defective state, and RMD Set # 3 is a valid Format3 RMD Set.

  An example of the state of RMD at this time is shown in FIG. As shown in FIG. 5, in RMA Segment # 1, 3/5 or more RMDs are in a defective state in each RMD Set from RMD Set # 2 to RMD Set # 28. In RMA Segment # 2, RMD Set # 1 is 4/5 defective and is an invalid RMA Segment. In RMA Segment # 3, RMD Set # 2 is 5/5 defective, and since RMA Segment # 4 and RMA Segment # 5 are not recorded, RMA Segment # 3 is an effective RMA Segment, and RMD Set # 3 is a valid Format # 3 RMD Set.

  Next, it is considered that the RMA is recorded as shown in FIG. 6A and the RMD state shown in FIG. 5 is changed from Restricted Overwrite Mode to Sequential Recording Mode. In Sequential Recording Mode, since it is a rule to record Format2 RMD from RMD # 1 to # 5, five Format2 RMDs are recorded. Looking at the RMD states of RMD Set # 2 in RMD Segment # 1 in FIG. 5, the RMD # 6 to RMD # 10 are 1, 1, 1, 0, 0. In Sequential Recording Mode, Format1 RMD is recorded in RMD # 6. However, as shown in FIG. 5, the RMD # 6, RMD # 7, and RMD # 8 RMD states are defective, and RMD # 9 is not defective. As shown in (a), the contents of RMD # 6 to RMD # 9 are recorded with the same contents. As a result, recording to the RMD in the defective state is prevented.

  Next, when RMD is added from FIG. 6B and FIG. 6A, the state of RMD # 10 is confirmed from FIG. 5, it is confirmed that this RMD # 10 is not in the defective state, and FIG. B) Format 1 RMD is recorded in RMD # 10. Furthermore, when adding RMD to FIG.6 (b) (a), RMD # 11 is confirmed from FIG. Since RMD # 11 is in a defective state, RMD # 12 is confirmed. Then, since RMD # 12 is not in a defective state, Format 1 RMD having the same contents is recorded in RMD # 11 and RMD # 12.

  Next, consider the transition from Sequential Recording Mode to Restricted Overwrite Mode in FIGS. From FIG. 5, the state of RMD # 1 to RMD # 5 is not a defective state, but RMD Set # 2 to RMD Set # 28 from RMD # 6 to RMD # 140 are all 3/5 or more. RMD Set is defective. Therefore, it can be seen that RMA Segment # 1 is an invalid RMA Segment. Further, when RMD Set # 1 of RMA Segment # 2 from RMD # 141 to RMD # 145 is viewed, this is also in a 4/5 defective state, and therefore RMA Segment # 2 is also an invalid RMD.

  When RMD # 281 to RMD # 285 are examined, there is no defective RMD. When RMD # 286 to RMD # 290 are examined, they are in the 5/5 defective state, but RMD # 291 to RMD # 295 are not in the defective state. That is, it is understood that Format2 RMD should be recorded in RMD Set # 1 of RMA Segment # 3 and Format3 RMD should be recorded in RMD Set # 3.

  However, RMA Segment # 1 and RMA Segment # 2 record Format 2 RMD in RMD Set # 1 and Format 3 RMD in RMD Set # 2 to RMD Set # 28 in order to match the Format. Further, when recording Format 2 RMD of RMA Segment # 1 in order to validate RMA Segment # 3, RMA Segment # 1 is obtained by adding 1 to the value of Update Counter of Format 2 RMD in FIG. Format2 RMD Update Counter of RMA Segment # 2 Format2 RMD Update Counter records RMA Segment # 1 Format2 RMD Update Counter plus 1, RMA Segment # 3 Format2 RMD Update Counter Record RMA Segment # 2 Format + 1 RMD Update Counter plus 1.

  By doing so, the value of the Update Counter of Format 2 RMD of RMA Segment # 3 becomes the largest value, and therefore, an effective RMA Segment can be searched by looking at the value of Update Counter of Format 2 RMD. In addition, Format3 RMD is recorded in RMD Set # 2 of RMA Segment # 3, but Format2 RMD Format3 RMD Set Pointer of RMA Segment # 3 is designated to indicate the head of RMD Set # 3 of RMA Segment # 3. .

  As described above, by using the RMD state table representing the RMD state of the present embodiment, even if the mode is changed from the Restricted Overwrite Mode to the Sequential Recording Mode and the Restricted Overwrite Mode, the RMD effective in the RMD Set in the defective state is effective. You can avoid writing.

  Also, this RMD status table can generate RSDS information of Field 1 of Format 2 RMD of RMA Segment # 1, RMA Segment # 2, and RMA Segment # 3 from the RMD status table.

  Next, an example of updating the RMD status table when recording is being performed in the Sequential Recording Mode will be described with reference to FIGS.

  FIG. 7 is a diagram illustrating an example of updating the RMD status table in the Sequential Recording Mode. FIG. 8 is a diagram showing an example of additional recording in the Sequential Recording Mode using the RMD state table of FIG.

  Based on the RMD state table as shown in FIG. 7, the information is recorded as shown in FIG. That is, Format2 RMD Set is recorded in the first five RMDs (RMD # 1 to RMD # 5) of RMA, and Format1 RMD is recorded from RMD # 6. As shown in FIG. 7A, RMD # Since RMD # 8 is in a defective state from 6 to 6, RMD # 6 to RMD # 8 are filled with Format1 RMD and Format1 RMD is recorded in RMD # 9 which is not in the defective state (FIG. )). In this case, when Format1 RMD is additionally written, since RMD # 10 is not defective from FIG. 7, Format1 RMD is directly added to RMD # 10. When the number of errors is large in the verification after appending, as shown in FIG. 7B, bit 4 of Byte 1 is set to 1, and the RMD status table is updated. Since RMD # 11 is in a defective state and RMD # 12 is in a non-defective state from FIG. 7, Format1 RMD is recorded in RMD # 11 and RMD # 12 as shown in FIG.

  Next, another example of User Specific Data defining the RMD state table is shown. 9 and 10 are diagrams illustrating another configuration example of the RMD state table according to the present embodiment. FIG. 9 shows an example in which the state of RMD is represented by 1 byte, and the state of RMD # 1 to RMD # 700 is represented by 0 to 699 bytes. Defective state is represented by 1. FIG. 10 shows an RMD state table in which 700 RMD states are defined using 700 bits.

  The above is an explanation for a disc that has been recorded using this disc recording device from the time when the disc is in Brand New state, but a case where recording has not been performed using this disc recording device will be explained. .

  FIG. 11 and FIG. 12 are diagrams showing an example in which an RMD status table is generated from a disc recorded by another disc recording device, not by using this disc recording device. When the state of a disk recorded by another disk recording apparatus is in the Restricted Overwrite mode state as shown in FIG. 6A, the RMD state table when this disk is loaded into the disk recording apparatus of this embodiment. The generation method will be described with reference to FIG. When this disk is loaded and RMD information is acquired, RMD Set 1 at the head of RMA Segment # 1 to RMA Segment # 5 is read to search for the one with the largest Update Counter of Format2 RMD. When read, it can be seen that RMA Segment # 4 and RMA Segment # 5 are not recorded on this disc, and that the value of Update Counter recorded in RMA Segment # 3 is the largest, which is effective. It turns out that it is RMA Segment.

  Read Format 2 RMD Set of RMA Segment # 1, and reflect the result of the reading in RMD Set # 1 of RMA Segment # 1 in FIG. If all can be read, bits 0-4 are all set to 0. From the RSDS information of Format 2 RMD read here, it can be known that RMD Set # 2 to RMD Set # 28 are in a defective state. However, since it is impossible to know each of the five RMDs constituting the RMD Set, the Bits 0 to 4 of the Byte corresponding to the RMD Set # 28 are all set to 1 from the RMD Set 2 of the RMA Segment # 1 in FIG. Next, read Format2 RMD of RMA Segment # 2 of the disc. If it can be read, information from RMD Set # 2 to RMD Set # 28 of RMA Segment # 2 in FIG. 11 is generated from the RSDS information recorded in the Format 2 RMD. If no Format 2 RMD Set can be read, 1 is inserted from Bit 0 to Bit 4 of RMD Set # 1 of RMA Segment # 2 in FIG. 11 and RSDS information is not known, so RMD Set # 2 of RMA Segment # 2 in FIG. 0 to RMD Set # 28. If the same thing is done for RMA Segment # 3, the RMD information of RMA Segmnet Segment # 3 can also be acquired, and an RMD status table as shown in FIG. 11 can be obtained.

  Next, using this disc recording device, the RMD status table is obtained from the disc recorded in the Sequential Recording Mode as shown in (c) of FIG. A generation method will be described. In this case, all of RMD # 1 to the last recorded Format1 RMD are read, and an RMD state table is generated from the read result. As shown in (c) of FIG. 6B, when there are many read errors in RMD # 6, RMD # 7, RMD # 8, and RMD # 11, an RMD state table as shown in FIG. 12 is generated. .

  Next, a recording management information recording method for a disc according to a second embodiment of the present invention will be described with reference to the drawings. FIG. 13 is a diagram showing an RMD Set status table of the recording management information recording method for a disc according to the present embodiment. As shown in FIG. 13, a state table of RMD Set is defined and recorded in User Specific Data. The state table of this RMD Set has a definition very similar to the RSDS information of Field 1 of Format 2 RMD in FIG. Specifically, as shown in FIG. 13, the state of RMD Set of RMA Segment # 1 is indicated by Byte0-3, RMD Set # 1 to RMD Set # 8 are assigned to Bit0 to Bit7 of Byte0, and Bit0 of Byte1 is assigned. RMD Set # 9 to RMD Set # 16 are assigned to Bit 7, RMD Set # 17 to RMD Set # 24 are assigned to Bit 7 from Byte 2 to Bit 7, and RMD Set # 25 to RMD Set # 28 are assigned to Bit 0 to Bit 3 of Byte 3. Similarly, the state of RMD Set of RMA Segment # 2 is represented by Byte 4-7, the state of RMD Set of RMA Segment # 3 is represented by Byte 8-11, and the state of RMD Set of RMA Segment # 4 is represented by Byte 12-15. Byte 16-19 represents the state of RMD Set of RMA Segment # 5. If the RMD Set cannot be recorded or if the number of read errors increases with three or more RMDs, it is assumed that the state is defective, and the corresponding bit 1 is recorded.

  RMA recording when the RMD Set state table of FIG. 13 is used will be described with reference to FIGS.

  As shown in FIG. 15A, RMA is recorded in the Restricted overwrite mode. RMA Segment # 1 is RMD Set # 2 from RMD Set # 2 to RMD Set # 28, RMD Set # 1 of RMA Segment # 2 is a defective RMD Set, and RMD Set # 2 of RMA Segment # 3 Is a defective RMD Set. FIG. 14 shows such an RMD Set state table.

  Next, let us consider converting the RMA recorded in the Restricted overwrite mode as shown in FIG. 15A to the Sequential Recording mode as shown in FIG. The RMD Set state table in FIG. 14 shows the state of the RMD Set, and does not show the state of each RMD constituting the RMD Set. Therefore, when RMD Set is Defective, it is assumed that all five RMDs are Defective, and Format2 RMD is added to five RMDs from RMD # 1 to RMD # 5 as shown in FIG. 14, RMD Set # 2 to RMD # 140 corresponding to RMD Set # 28 of RMA Segment # 1 are in a defective state, and RMD Set # 1 of RMA Segment # 2 is RMD that is defective from FIG. Since RMD # 141 to RMD # 145 are also in a defective state because RMD # 141 to RMD # 146 are not defective because RMD Set # 2 of RMA Segment # 2 is not defective, RMD # 146 to RMD # 146 are not defective. Record the RMD. If it is necessary to additionally write Format1 RMD, since RMD # 147 is not defective, it is added to RMD # 147 as shown in FIGS.

  Next, consider the transition from Sequential Recording Mode to Restricted overwrite Mode in FIG. Since the state of the RMD Set of the RMA Segment is recorded in FIG. 14, the transition to the Restricted overwrite Mode is considered based on this.

  From FIG. 14, RMA Segment # 1 is in a state where RMD Set # 2 to RMD Set 28 in which Format3 RMD Set is recorded is defective. Using this information, an RSDS of Format2 RMD to be recorded in RMA Segment # 1 is generated. Further, the value of Update Counter is obtained by adding 1 to the value of Update Counter of Format2 RMD in (b) and (b) of FIG. Further, FIG. 14 shows the state of the RMD Set of RMA Segment # 2. Since RMD Set # 1 is defective, it can be seen that this RMA Segment # 2 is also an invalid RMA. In the format RMD information of RMA Segment # 2, the value of Update Counter may be 0 for Format 2 RMD Update Counter of RMA Segment # 1, and RSDS # 2 to RSDS # 28 may all be 0 from FIG. Only the RMD Set # 2 is defective in the RMD Set state of the RMA Segment # 3. For this reason, it is understood that the Format3 RMD Set effective in the RMA in which the RMA Segment # 3 is effective may be written in the RMD Set # 3. Therefore, Format2 RMD information of RMA Segment # 3 is 1 only for RSDS # 2, 0 is all for RSDS # 3 to RSDS # 28, Format3 Set Pointer is RMD Set # 3 of RMA Segment # 3, and Update Counter is RMA Segment The value of Update Counter of # 2 Format # 2 RMD should be +1.

  As described above, according to each embodiment of the present invention, by using the 700 RMD status tables or 140 RMD Set status tables recorded in the RMA area, the restrictive overwrite mode and the sequential recording mode are used. Even if there are a plurality of recording modes, the recording mode conversion is frequently performed because it is not possible to record the RMD in the RMD area where the recording could not be performed even once in the past or the EDC error occurred after reading. Even if it occurs, the reliability of the RMD lead is improved.

  Also, since the User Specific area is used, it is compatible with drives using other methods, and other methods are used by uniquely identifying the RMD status table and RMD Set status table. Even if the disk recording device uses User Specific Data for another purpose, it can be identified.

  The above explanation is an illustration of a preferred embodiment of the present invention, and the scope of the present invention is not limited to this, and various forms can be adopted as long as it belongs to the technical scope of the present invention. Not too long. The same applies to applications. For example, in the present embodiment, an example in which format conversion is performed with two-stage settings is shown, but three types or three or more stages may be set, and verification may be performed each time. In this way, the data reliability can be further improved.

  In this embodiment, the names of the optical disk apparatus and its control method are used. However, this is for convenience of explanation, and the magneto-optical disk apparatus and its control method, track, focus, tilt servo mechanism, track, focus, tilt control. Of course, it may be a method or the like.

  In addition, the circuit units constituting the optical disc apparatus, for example, the types, number and connection methods of the respective control units and offset injection units are not limited to the above-described embodiments.

  The present invention can be used for a recording / reproducing technique using an optical disc.

It is a figure which shows the RMD status table of the recording management information recording method of the disc by the 1st Embodiment of this invention. It is a figure which shows the RMD state table with an identifier. It is a figure which shows the example of an update of the RMD status table in Restricted Overwrite Mode. It is a figure which shows the example of update of RMD Set in Restricted Overwrite Mode at the time of using the RMD state table of FIG. It is a figure which shows the example of a recording of RMA using the RMD status table. It is a figure which shows the RMA recording example at the time of using the RMD state table of FIG. It is a figure which shows the example of an update of the RMD state table in Sequential Recording Mode. It is an additional recording example in Sequential Recording Mode using the RMD state table of FIG. It is a figure which shows another Example of a RMD status table. It is a figure which shows another Example of a RMD status table. It is a figure which shows the structural example of the RMD state table produced | generated from the disc recorded by the disc recording apparatus of a system different from this Embodiment. It is a figure which shows the structural example of a RMD state table from the disk recorded with the disk recording device of a system different from this Embodiment. It is a figure which shows the structural example of the RMD Set state table by this Embodiment. It is a figure which shows the structural example of the RMD Set state table by this Embodiment. It is a figure which shows the example of RMA recording at the time of using the RMD Set state table shown in FIG. It is a figure which shows the disc structure of DVD-RW. It is a figure which shows the example of a RMA structure. It is a figure which shows the example of a definition of Format2 RMD Field1. It is a figure which shows the RMA structure example of Restricted overwrite mode. It is a figure which shows RMD Format recorded in Restricted overwrite mode. It is a figure which shows the RMA structure example of Sequential recording mode. It is a figure which shows the additional recording example of RMD in Sequential recording mode. It is a figure which shows the example of transfer from Restricted overwrite mode to Sequential Recording mode and Restricted overwrite mode.

Claims (15)

Control of the recording apparatus for a recording medium that performs a verify operation for comparing the data to be reproduced with the recorded data when the recorded data recorded on the rewritable recording medium is reproduced. A method,
A control method for a recording apparatus, wherein when performing a verify operation, the verify operation is executed a plurality of times while setting control system elements of the optical disk device in a plurality of stages. A recording device for a recording medium that defines a plurality of recording modes for a rewritable recording medium and records data according to the defined recording mode,
The recording medium has a recording management area for recording recording management information corresponding to the recording mode, and a plurality of recording management data that can be recorded in the recording management area.
A recording medium recording apparatus comprising a table indicating a state of the recording management data recording area. A recording apparatus for recording on a rewritable recording medium, a recording medium in which a plurality of recording formats are defined in management information for managing a recording state of the recording medium,
A recording apparatus comprising: a management unit that manages state information of an area in which management information is recorded; and a recording unit that records management information.   The recording apparatus according to claim 3, wherein the management unit manages management of state information of an area in which the management information is recorded for each recording unit.   4. The recording apparatus according to claim 3, wherein management of status information of an area in which the management information is recorded is collectively managed with respect to a management information recording unit.   The recording apparatus according to claim 3, wherein management information for managing a recording state of a recording medium is recorded using state information of an area in which the management information is recorded.   The recording apparatus according to claim 3, wherein format conversion of management information for managing a recording state of a recording medium is performed using state information of an area in which the management information is recorded.   The state information of the area for recording the management information is recorded in a user specific data area that can be arbitrarily recorded by the user in the area for recording the management information for managing the recording state of the recording medium. The recording apparatus according to claim 3.   9. The recording apparatus according to claim 8, wherein when recording in the user arbitrary storage area, recording is performed with an identifier of state information of the area in which the management information is recorded.   The recording apparatus according to claim 2, wherein the recording management table includes an RMD status table indicating a status of R storage management data that can be recorded in a recording management area.   3. The recording apparatus according to claim 2, wherein RMD is substituted using the RMD state table, and the recording method is converted between the restricted overwrite mode and the sequential recording mode.   The recording apparatus according to claim 10 or 11, wherein the RMD state table is a state table in units of RMD sets in which a plurality of RMDs that can be recorded in the RMA area are collected.   13. The recording apparatus according to claim 12, wherein a recording method conversion between RMD substitution or the restricted overwrite mode and the sequential recording mode is performed using the state table in units of RMD sets.   13. The recording according to claim 12, wherein the RMD state table or the RMD set unit state table includes an RMD state table identifier or an RMD set state table identifier indicating that user-specific data is recorded. apparatus.   The RMD status table or the RMD set status table is generated when a disc recorded by a disc recording apparatus that does not have the RMD status table or the RMD set unit status table is loaded. The recording apparatus according to any one of 12 to 14.

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