Method for accessing data of defected optical disk

Details Method for accessing data of defected optical disk Method for accessing data of defected optical disk

2007-01-09

2007-01-09

Beausoliel, Robert (Department: 2113)

Error detection/correction and fault detection/recovery

Data processing system error or fault handling

Reliability and availability

C714S005110, C714S006130, C714S006130

Reexamination Certificate

active

10248195

ABSTRACT:
A method for accessing data in an optical disk with a drive. The drive has a memory. The optical disk has data blocks for recording data, and spare blocks for replacing defect data blocks. The method includes reading a predetermined number of spare blocks into the memory,and while reading a defect data block, checking whether a corresponding replacing spare block is stored in the memory. If so, suspending further reading of the spare block. Otherwise, reading the spare block with a predetermined number of other spare blocks into the memory to reduce further reading of spare blocks.

REFERENCES:
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patent: 6615363 (2003-09-01), Fukasawa
patent: 6725395 (2004-04-01), Ono et al.

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