Method for managing defects of optical disk

Details Method for managing defects of optical disk Method for managing defects of optical disk

2006-05-23

2006-05-23

Beausoliel, Robert (Department: 2113)

Error detection/correction and fault detection/recovery

Data processing system error or fault handling

Reliability and availability

C714S005110, C714S006130, C714S006130, C714S006130, C369S047140

Reexamination Certificate

active

07051232

ABSTRACT:
A method for accessing data on an optical disk by a drive. The optical disk includes spare packets and data blocks. Each data block is for recording data written to the optical disk, and each spare packet has spare blocks for replacing defect blocks to record data. The drive has a memory allocated with buffers, and each buffer is for recording data of a spare packet. When writing data of a first buffer to a packet of the optical disk, if a plurality of first spare blocks are found defective, then searching a second spare packet which has spare blocks for replacing the first blocks. If the second spare packet is not read in a buffer, reading the second spare packet into a releasable buffer. After copying data written to the first spare blocks from the first buffer to the second buffer, making the first buffer releasable.

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