Write-once type optical disc, and method and apparatus for managing defective areas on 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 a spare area being used for a replacement writing operation, the method comprising:
- 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 at least one defect management area within the spare area, defect management information which cumulatively includes defect list information associated with the detected defective area and any previous defect list information previously written in the recording medium, the defect management area being allocated to the spare area when a plurality of defect management areas are provided; and
writing positional information onto the defect management area, the positional information including information for indicating a position of a latest defect management information written in the defect management area.
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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.
182 Citations
19 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 a spare area being used for a replacement writing operation, the method comprising:
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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 at least one defect management area within the spare area, defect management information which cumulatively includes defect list information associated with the detected defective area and any previous defect list information previously written in the recording medium, the defect management area being allocated to the spare area when a plurality of defect management areas are provided; and writing positional information onto the defect management area, the positional information including information for indicating a position of a latest defect management information written in the defect management area. - View Dependent Claims (2, 3, 4, 5, 6, 7, 17)
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8. A non-transitory 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, a spare area allocated on at least one of an inner portion and an 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 new defect list information associated with the defective area detected during a data writing operation and previous defect list information previously written in the computer-readable recording medium, the defect management area being allocated to the spare area when a plurality of defect management areas are provided; and a positional information in the defect management area, the positional information including information for indicating a position of a latest defect management information written in the defect management area. - View Dependent Claims (9, 18)
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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 a spare area being used for a replacement writing operation, the apparatus comprising:
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an optical pickup configured to write data to or read data from the recording medium; a servo unit configured to control the optical pickup to maintain a distance between the optical pickup and the recording medium and track relevant tracks on the recording medium; and a controller configured to control the servo unit and the optical 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 at least one defect management area within the spare area defect management information which cumulatively includes new defect list information associated with the defective area and previous defect list information previously recorded in the recording medium, the defect management area being allocated to the spare area when a plurality of defect management areas are provided; and control the optical pickup to write positional information onto the defect management area, the positional information including information for indicating a position of a latest defect management information written in the defect management area. - View Dependent Claims (11, 12, 13, 14, 15, 16, 19)
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Specification