Information recording medium capable of defect management, information recording apparatus capable of defect management, and information playback apparatus for playing back information from defect-managed medium
AssigneeKabushiki Kaisha Toshiba
InventorHideki Takahashi
Life of this patent
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Abstract
An information recording medium according to an aspect of this invention includes a data area (A2) for recording user data and an address area (DMA address area) for recording address data that indicates the position of a defect management area that manages a defect present in the data area.
Claims4
1-7. (canceled)
An information recording medium comprising:
- a defect management area for recording defect management information representing a relationship between a defective area and a spare area serving as a replacement destination of the defective area;
- and
- a reserved area which becomes a replacement destination of the defect management information based on defects detection in the defect management area.
An information recording method for recording information on an information recording medium comprising a defect management area and a reserved area of the defect management area, said information recording method comprising:
- reading out from the defect management area defect management information representing a relationship between a defective area and a corresponding spare area;
- when it is determined that a predetermined recording destination in the data area of the information recording medium corresponds to the defective area on the basis of the defect management information stored in the defect management area at the time of recording desired data to the predetermined recording destination, recording the desired data in the spare area corresponding to the defective area;
- recording the defect management information read out from the defect management area in the reserved area on the basis of defects detection in the defect management area;
- when it is determined that a predetermined recording destination in the data area of the information recording medium corresponds to the defective area on the basis of the defect management information stored in the reserved area at the time of recording desired data to the predetermined recording destination, recording the desired data in the spare area corresponding to the defective area.
An information playback method for playing back information from a predetermined information recording medium comprising a defect management area for recording defect management information representing a relationship between a defective area and a spare area serving as a replacement destination of the defective area, and a reserved area which becomes a replacement destination of the defect management information based on defects detection in the defect management area, said information playback method comprising:
- reading out the defect management information from one of the defect management area and the reserved area;
- and
- playing back desired data from the spare area, which is substituted for the defective area, based on the defect management information read out from the defect management area or that read out from reserved area.
Dependencies are inferred from the claim text.