Information recording medium, information recording method, information recording apparatus and information reproducing apparatus
AssigneeMatsushita Electric Industrial Co., Ltd.
InventorsMotoshi Ito, Hiroshi Ueda, Yoshiho Gotoh, Yoshihisa Fukushima
Life of this patent
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Abstract
An information recording medium of the present invention includes: a volume space in which user data is recorded; a spare area including a replacement area which may be used in place of a defective area included in the volume space; and a defect management information area in which defeat management information for managing the defective area is recorded. The defect management information includes status information indicating whether the defective area is replaced by the replacement area.
Claims3
An information recording medium, comprising:
- a volume space for recording user data;
- an expandable spare area including a replacement area which is usable in place of a defective area included in the volume space;
- and
- a defect management information area for recording defect management information for managing the defective area,
- wherein:
- the defect management information includes status information indicating whether the defective area is replaced by the replacement area,
- when there are no available replacement area included in the spare area temporarily, the status information indicating that the defective area is not replaced by the replacement area is written into the defect management information area.
A method for recording information on an information recording medium including a volume space for recording user data;
- and expandable spare area including a replacement area which is usable in place of a defective area included in the volume space;
- and a defect management information area for recording defect management information for managing the defective area, the method comprising the steps of:
- detecting the defective area;
- recording status information indicating whether the defective area is replaced by the replacement area in the defect management information;
- and
- detecting that there are no available replacement area included in the spare area temporarily,
- wherein:
- when there are no available replacement area included in the spare area temporarily, the status information indicating that the defective area is not replaced by the replacement area is written into the defect management information area.
An apparatus for recording information on an information recording medium including a volume space for recording user data;
- an expandable spare area including a replacement area which is usable in place of a defective area included in the volume space;
- and a defect management information area for recording defect management information for managing the defective area, the apparatus comprising:
- a first detection section for detecting the defective area;
- a recording section for recording status information indicating whether the defective area is replaced by the replacement area in the defect management information;
- and
- a second detection section for detecting that there are no available replacement area included in the spare area temporarily,
- wherein:
- when there are no available replacement area included in the spare area temporarily, the recording section writes the status information indicating that the defective area is not replaced by the replacement area into the defect management information area.
Dependencies are inferred from the claim text.