Recording medium, recording device, reproduction device, recording method and reproduction method
DCFirst Claim
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.
1 Assignment
Litigations
0 Petitions
Accused Products
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.
17 Citations
17 Claims
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1. A recording medium provided with a write-once recording area allowing data to be written therein only once and comprising:
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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. - View Dependent Claims (2, 3, 4, 15)
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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:
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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. - View Dependent Claims (6, 7, 8, 16)
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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:
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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 a 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.
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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:
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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; 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 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. - View Dependent Claims (11, 12, 13, 17)
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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:
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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; 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 reading out data from said address specified in said read request if said address specified in said read request is determined at said determining step to be not an address completing an alternate-address process; and 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 determining step to be an address completing an alternate-address process.
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Specification