Recording medium, recording device, reproduction device, recording method and reproduction method

• US 20050207262A1
• Filed: 03/11/2004
• Published: 09/22/2005
• Est. Priority Date: 03/12/2003
• Status: Active Grant

• Current Assignee: Sony Corporation (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: Terada, Mitsutoshi, Kobayashi, Shoei, Kuraoka, Tomotaka
• Granted Patent: US 7,277,371 B2
• Time in Patent Office: Days
• US Class Current: 365/232
• CPC Class Codes: G11B 20/1883 Methods for assignment of alternate areas for defective areas
• CPC Class Codes: G11B 2020/10907 using pseudo-overwriting, i.e. virtually or logically overwriting data on WORM media by remapping recorded blocks to alternate areas
• CPC Class Codes: G11B 2020/1221 cluster, i.e. a data structure which consists of a fixed number of sectors or ECC blocks
• CPC Class Codes: G11B 2020/1275 Calibration data, e.g. specific training patterns for adjusting equalizer settings or other recording or playback parameters
• CPC Class Codes: G11B 2020/1285 Status of the record carrier, e.g. space bit maps, flags indicating a formatting status or a write permission
• CPC Class Codes: G11B 2020/1873 Temporary defect structures for write-once discs, e.g. TDDS, TDMA or TDFL
• CPC Class Codes: G11B 2020/1893 using linear replacement to relocate data from a defective block to a non-contiguous spare area, e.g. with a secondary defect list [SDL]
• CPC Class Codes: G11B 2220/20 Disc-shaped record carriers
• CPC Class Codes: G11B 2220/218 Write-once discs
• CPC Class Codes: G11B 2220/2541 Blu-ray discs; Blue laser DVR discs
• CPC Class Codes: G11B 7/0053 Reproducing non-user data, e.g. wobbled address, prepits, BCA
• CPC Class Codes: G11B 7/00718 Groove and land recording, i.e. user data recorded both in the grooves and on the lands
• CPC Class Codes: G11B 7/00736 Auxiliary data, e.g. lead-in, lead-out, Power Calibration Area [PCA], Burst Cutting Area [BCA], control information sector headers or adresses in prepits G11B7/00745; address data in track wobble G11B7/24082
• CPC Class Codes: G11B 7/00745 Sectoring or header formats within a track formats in general G11B20/12
• CPC Class Codes: G11B 7/24038 Multiple laminated recording layers

Abstract

In order to enhance the usability of a write-once recording medium, the recording medium is provided with an ordinary recording/reproduction area, an alternate area, a first alternate-address management information area and a second alternate-address management information area. In addition, written/unwritten state indication information is recorded in a predetermined area. The second alternate-address management information area is an area allowing alternate-address management information recorded therein to be renewed by adding alternate-address management information to the area. Alternate-address management information recorded in the second alternate-address management information area includes information recorded in a first information format and information recorded in a second information format. The first information format shows an alternate source address and an alternate destination address for each data unit. On the other hand, the second information format shows an alternate source address and an alternate destination address for a group of a plurality of physically continuous data units. The second information format is used as a format for effectively carrying out an alternate-address process on such a group of data units. All alternate-address management information is recorded in the first alternate-address management information area in the first information format.

Claims

1. A recording medium provided with a write-once recording area allowing data to be written therein only once and comprising:

an ordinary recording/reproduction area which data is recorded into and reproduced from;

an alternate area used for storing data in an alternate-address process for a defect existing in said ordinary recording/reproduction area and a data renewal;

a first alternate-address management information area for recording alternate-address management information for managing said alternate-address process using said alternate area; and

a second alternate-address management information area for recording said alternate-address management information as data that can be updated,

wherein said alternate-address management information recorded in said second alternate-address management information area includes information of a first information format, which shows an alternate source address and an alternate destination address for every data unit, and information of a second information format, which shows an alternate source address and an alternate destination address for a collection of a plurality of physically continuous data units.

2. The recording medium according to claim 1 wherein,

said first alternate-address management information area is used for storing most recent alternate-address management information, which has been recorded in said second alternate-address management information area, all in said first information format.

3. The recording medium according to claim 1 wherein,

said second information format is an information format showing an alternate source address of the first data unit in a plurality of physically continuous data units and an alternate destination address of the first data unit in a plurality of other physically continuous data units as well as an alternate source address and alternate destination address of the last ones in said data units.

4. The recording medium according to claim 1 wherein:

for each data unit of said write-once recording area, written/unwritten state indication information indicating whether or not data has been written into said data unit is recorded in a predetermined area; and

for a plurality of data units in an alternate source shown in said second information format and for a plurality of data units in an alternate destination shown in said same information format, said existence/non-existence indication information indicates that data has been written into each of said data units.

5. A recording apparatus provided for a recording medium provided with a write-once recording area allowing data to be written therein only once and comprising:

an ordinary recording/reproduction area which data is recorded into and reproduced from;

an alternate area used for storing data in an alternate-address process for a defect existing in said ordinary recording/reproduction area and a data renewal;

a first alternate-address management information area for recording alternate-address management information for managing said alternate-address process using said alternate area; and

a second alternate-address management information area for recording said alternate-address management information as data that can be updated,

said recording apparatus comprising;

write means for writing data into said recording medium; and

control means for controlling said write means to write alternate-address management information of;

a first information format showing an alternate source address and alternate destination address for a data unit not physically continuous to other data units in an operation to update alternate-address management information stored in said second alternate-address management information area in accordance with said alternate-address process for said data unit; and

a second information format showing an alternate source address and alternate destination address for a collection of a plurality of physically continuous data units in an operation to update alternate-address management information stored in said second alternate-address management information area in accordance with said alternate-address process for said data units.

6. The recording apparatus according to claim 5 wherein,

when said control means controls said write means to record alternate-address management information in said first alternate-address management information area, said write means stores most recent alternate-address management information, which has been recorded in said second alternate-address management information area, all in said first information format.

7. The recording apparatus according to claim 5 wherein,

said second information format is an information format showing an alternate source address of the first data unit in a plurality of physically continuous data units and an alternate destination address of the first data unit in a plurality of other physically continuous data units as well as an alternate source address and alternate destination address of the last ones in said data units.

8. The recording apparatus according to claim 5 wherein:

for each data unit of said write-once recording area, said control means controls said write means to record written/unwritten state indication information in a predetermined area as information indicating whether or not data has been written into said data unit; and

for a plurality of data units in an alternate source shown in said second information format and for a plurality of data units in an alternate destination shown in said same information format, said control means controls said write means to record said existence/non-existence indication information indicating that data has been written into each of said data units.

9. A reproduction apparatus provided for a recording medium provided with a write-once recording area allowing data to be written therein only once and comprising:

an ordinary recording/reproduction area which data is recorded into and reproduced from;

an alternate area used for storing data in an alternate-address process for a defect existing in said ordinary recording/reproduction area and a data renewal;

a first alternate-address management information area for recording alternate-address management information for managing said alternate-address process using said alternate area; and

a second alternate-address management information area for recording said alternate-address management information as data that can be updated,

wherein said alternate-address management information recorded in said second alternate-address management information area includes information of a first information format, which shows an alternate source address and an alternate destination address for every data unit, and information of a second information format, which shows an alternate source address and an alternate destination address for a collection of a plurality of physically continuous data units,

said reproduction apparatus comprising;

read means for reading out data from said recording medium;

confirmation means for determining whether or not an address specified in a read request to read out data from said main data area is an address completing an alternate-address process on the basis of said alternate-address management information recorded in said second alternate-address management information area in said first or second information format; and

control means for controlling said read means to read out data from said address specified in said read request if said confirmation means determines that said address specified in said read request is not an address completing an alternate-address process but controlling said read means to read out data requested by said read request from said alternate area on the basis of said alternate-address management information if said confirmation means determines that said address specified in said read request is an address completing an alternate-address process.

10. A recording method provided for a recording medium provided with a write-once recording area allowing data to be written therein only once and comprising:

an ordinary recording/reproduction area which data is recorded into and reproduced from;

an alternate area used for storing data in an alternate-address process for a defect existing in said ordinary recording/reproduction area and a data renewal;

a first alternate-address management information area for recording alternate-address management information for managing said alternate-address process using said alternate area; and

a second alternate-address management information area for recording said alternate-address management information as data that can be updated,

said recording method comprising;

a first write step of writing alternate-address management information of a first information format showing an alternate source address and an alternate destination address for a data unit not physically continuous to other data units in an operation to update alternate-address management information stored in said second alternate-address management information area in accordance with said alternate-address process for said data unit; and

a second write step of writing alternate-address management information of a second information format showing an alternate source address and an alternate destination address for a collection of a plurality of physically continuous data units in an operation to update alternate-address management information stored in said second alternate-address management information area in accordance with said alternate-address process for said data units.

11. The recording method according to claim 10, said recording method further provided with a third write step of recording most recent alternate-address management information recorded in said second alternate-address management information area all in said first information format in an operation to record alternate-address management information in said first alternate-address management information area.

12. The recording method according to claim 10 wherein,

said second information format is an information format showing an alternate source address of the first data unit in a plurality of physically continuous data units and an alternate destination address of the first data unit in a plurality of other physically continuous data units as well as an alternate source address and alternate destination address of the last ones in said data units.

13. The recording method according to claim 10 wherein,

said recording method further provided with a fourth write step of recording written/unwritten state indication information in a predetermined area as information indicating whether or not data has been written into each data unit of said write-once recording area whereby, at said fourth write step, for a plurality of data units in an alternate source shown in said second information format and for a plurality of data units in an alternate destination shown in said same information format, said existence/non-existence indication information is recorded as information indicating that data has been written into each of said data units.

14. A reproduction method provided for a recording medium provided with a write-once recording area allowing data to be written therein only once and comprising:

an ordinary recording/reproduction area which data is recorded into and reproduced from;

an alternate area used for storing data in an alternate-address process for a defect existing in said ordinary recording/reproduction area and a data renewal;

a first alternate-address management information area for recording alternate-address management information for managing said alternate-address process using said alternate area; and

a second alternate-address management information area for recording said alternate-address management information as data that can be updated,

wherein said alternate-address management information recorded in said second alternate-address management information area includes information of a first information format, which shows an alternate source address and an alternate destination address for every data unit, and information of a second information format, which shows an alternate source address and an alternate destination address for a collection of a plurality of physically continuous data units,

said reproduction method comprising;

a confirmation step of determining whether or not an address specified in a read request to read out data from a main data area is an address completing an alternate-address process on the basis of alternate-address management information recorded in said second alternate-address management information area in said first or second information format; and

a first read step of reading out data from said address specified in said read request if said address specified in said read request is determined at said confirmation step to be not an address completing an alternate-address process; and

a second read step of reading out data requested by said read request from said alternate area on the basis of said alternate-address management information if said address specified in said read request is determined at said confirmation step to be an address completing an alternate-address process.