Information storage medium, information recording method and apparatus, and information reproducing method and apparatus
OwnerHideo Ando, Hideki Takahashi +2inventors
InventorsHideo Ando, Hideki Takahashi, Yutaka Kashihara, Akihito Ogawa
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Abstract
There is provided an information storage medium capable of highly reliable defect management, even if the medium has relatively low resistance to overwriting. The information storage medium comprises a defect management area in which defect management information on a replacing process is recorded, a spare area for defect management information on the defect management area, and an area in which a DMA manager for managing the replacing process using the spare area for defect management information is recorded.
Claims3
An information storage medium comprising:
- a data area in which user data is recorded;
- a spare area for defects occurring in the data area;
- a defect management area in which defect management information about a replacing process using the spare area is recorded;
- a spare area for defect management information about the defect management area;
- and
- an area in which a DMA manager for managing the replacing process using the spare area for defect management information is recorded.
An information recording method for an information storage medium, the information storage medium including a data area in which user data is recorded, a spare area for defects occurring in the data area, a defect management area in which defect management information about a replacing process using the spare area is recorded, a spare area for defect management information about the defect management area, and an area in which a DMA manager for managing the replacing process using the spare area for defect management information is recorded, the information recording method comprising:
- using the spare area for defect management information on the next defect management area according to the number of times the spare area for defect management information on the defect management area was used.
An information reproducing method for an information storage medium, the information storage medium including a data area in which user data is recorded, a spare area for defects occurring in the data area, a defect management area in which defect management information about a replacing process using the spare area is recorded, a spare area for defect management information about the defect management area, and an area in which a DMA manager for managing the replacing process using the spare area for defect management information is recorded, the information reproducing method comprising:
- reading the information in the latest area of the spare area for defect management information about the defect management area when reproducing the recorded information on the information storage medium;
- and,
- recognizing the address of the spare area for the defect.
Dependencies are inferred from the claim text.