Optical disc, method and apparatus for managing a defective area on an optical disc
First Claim
1. A method for managing a recording medium having at least one temporary defect management area (TDMA), at least one defect management area (DMA) and at least one spare area, said method comprising:
- writing data associated with a defective area to the at least one spare area as replacement data if the defective area is detected within a data area of the recording medium; and
writing defect management information in the at least one temporary defect management area for access to the data written in the at least one spare area, wherein said defect management information includes location information indicating a next available address of the at least one spare area,wherein the defect management information includes temporary defect list information and temporary disc structure information in the at least one temporary defect management area,the location information is written in the temporary disc structure information, andthe temporary defect list information includes one or more defect entries and a defect list terminator following the one or more defect entries, and a defect entry is used to manage the defective area and the defect list terminator indicates a termination of the temporary defect list information.
1 Assignment
0 Petitions
Accused Products
Abstract
A method and apparatus for managing a defective area on a optical recording medium, e.g., of writable once type, permits more efficient writing and management of defect list information or temporary defect list information for managing the defective area in a minimum recording size. The method includes writing data in a defective area existing on a high density optical disc, e.g., such as a BD-WO, in a spare area in place of the defective area, producing defect list information for access to the data replacement written in the spare area and writing in a particular area for defect management. The defect entries actually corresponding to the replacement written data, and writing location information of the next available spare area are written and managed as defect list information for management, or the writing location information of a location where replacement writing is possible is written and managed as defect definition structure information.
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Citations
15 Claims
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1. A method for managing a recording medium having at least one temporary defect management area (TDMA), at least one defect management area (DMA) and at least one spare area, said method comprising:
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writing data associated with a defective area to the at least one spare area as replacement data if the defective area is detected within a data area of the recording medium; and writing defect management information in the at least one temporary defect management area for access to the data written in the at least one spare area, wherein said defect management information includes location information indicating a next available address of the at least one spare area, wherein the defect management information includes temporary defect list information and temporary disc structure information in the at least one temporary defect management area, the location information is written in the temporary disc structure information, and the temporary defect list information includes one or more defect entries and a defect list terminator following the one or more defect entries, and a defect entry is used to manage the defective area and the defect list terminator indicates a termination of the temporary defect list information. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A recording medium comprising:
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a spare area within a data area, said spare area configured to store replacement data; a temporary defect management area configured to store defect management information to manage a defective area when the recording medium is under a non-finalized state; and a defect management area configured to store the defect management information to manage the defective area when the recording medium is under a finalized state, wherein data associated with the defective area is written in said at least one spare area as the replacement data; and
wherein said defect management information includes location information indicating a next available address of the spare area,the defect management information further includes temporary defect list information and temporary disc structure information in the at least one temporary defect management area, the location information is written in the temporary disc structure information, and the temporary defect list information includes one or more defect entries and a defect list terminator following the one or more defect entries, and a defect entry is used to manage the defective area and the defect list terminator indicates a termination of the temporary defect list information. - View Dependent Claims (10, 11, 12, 13, 14)
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15. An apparatus for managing a recording medium having at least one temporary defect management area (TDMA), at least one defect management area (DMA), and at least one spare area, said apparatus comprising:
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a pickup configured to read data from the recording medium and write data on the recording medium; and a controller, operatively coupled to the pickup, configured to control the pickup to write the data associated with a defective area to the at least one spare area as replacement data if the defective area is detected within a data area of the recording medium; and
control the pickup to write defect management information in the at least one temporary defect management area for access to the data written in the at least one spare area,wherein said defect management information includes location information indicating a next available address of the at least one spare area, the defect management information includes temporary defect list information and temporary disc structure information in the at least one temporary defect management area, the location information is written in the temporary disc structure information, and the temporary defect list information includes one or more defect entries and a defect list terminator following the one or more defect entries, and a defect entry is used to manage the defective area and the defect list terminator indicates a termination of the temporary defect list information.
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Specification