Reclamation of dust contaminated sectors in optical disk apparat

Details Reclamation of dust contaminated sectors in optical disk apparat Reclamation of dust contaminated sectors in optical disk apparat

1991-09-09

1994-04-12

Psitos, Aristotelis

Dynamic information storage or retrieval

Condition indicating, monitoring, or testing

Including radiation storage or retrieval

369 48, 369 56, 369 58, 369 50, G11B 700

Patent

active

053032195

ABSTRACT:
Defective sectors on an optical disk are identified during initial format and such sectors are eliminated as sectors that might possibly be reclaimed at a later date. Those sectors which are identified as defective during use of the disk are listed separately from those found defective at initial format in a secondary defect (SDL) list. After a cleaning operation, those sectors in the SDL are surface analyzed to determine whether they are now good. Further, those defective sectors in the SDL adjacent to sectors found initially defective may be eliminated as reclamation possibilities.

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IBM TDB, vol. 32, No. 6A, Nov. 1989, New York US pp. 319-324 `Erase Detection Of Error Recovery For Optical Files`.

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