Write-once type optical disc, and method and apparatus for managing defective areas an write-once type optical disc
First Claim
1. A method for managing a defective area on a recording medium of writable once type, the recording medium having a recording layer including a lead-in area, a data area and a lead-out area, the data area including at least one spare area being used for a replacement writing operation, the method comprising steps of:
- (a) detecting an existence of a defective area within the data area of the recording medium;
(b) replacing the defective area with a replacement area in the spare area if the defective area is detected;
(c) writing in the spare area defect management information which cumulatively includes defect list information associated with the defective area detected in the step (a) and any defect list information previously written in the recording medium; and
(e) writing onto the recording medium positional information of the defect management information.
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Accused Products
Abstract
A recording medium and a method and apparatus for managing a defective area on the recording medium are provided. The method includes detecting an existence of a defective area within the data area of the recording medium; replacing the defective area with a replacement area in the spare area if the defective area is detected; writing in the spare area defect management information which cumulatively includes defect list information associated with the defective area detected in the step (a) and any defect list information previously written in the recording medium; and writing onto the recording medium positional information of the defect management information.
104 Citations
15 Claims
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1. A method for managing a defective area on a recording medium of writable once type, the recording medium having a recording layer including a lead-in area, a data area and a lead-out area, the data area including at least one spare area being used for a replacement writing operation, the method comprising steps of:
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(a) detecting an existence of a defective area within the data area of the recording medium; (b) replacing the defective area with a replacement area in the spare area if the defective area is detected; (c) writing in the spare area defect management information which cumulatively includes defect list information associated with the defective area detected in the step (a) and any defect list information previously written in the recording medium; and (e) writing onto the recording medium positional information of the defect management information. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A computer-readable recording medium of writable once type, comprising:
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a recording layer including a lead-in area, a data area and a lead-out area, at least one spare area allocated on a inner and/or outer portion of the data area, the spare area being used for replacing a defective area existing on the data area, a defect management area allocated on a part of the spare area storing therein defect management information which cumulatively includes defect list information associated with the defective area detected during a data writing operation and any defect list information previously written in the recording medium; and a positional information associated with the defect management information. - View Dependent Claims (9)
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10. An apparatus for managing a defective area on a recording medium of writable once type, the recording medium having a recording layer including a lead-in area, a data area and a lead-out area, the data area including at least one spare area being used for a replacement writing operation, the apparatus comprising:
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an optical pickup configured to write/read data to/from the recording medium; a servo unit configured to control the pickup to maintain a distance between the pickup and the recording medium and track relevant tracks on the recording medium; and a controller configured to control the servo unit and the pickup to detect an existence of a defective area within the data area of the recording medium;
replace the defective area with a replacement area in the spare area if the defective area is detected;
write in the spare area defect management information which cumulatively includes defect list information associated with the defective area and any defect list information previously recorded in the recording medium; and
control the pickup to write onto the recording medium positional information of the defect management information. - View Dependent Claims (11, 12, 13, 14, 15)
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Specification