Sector and track level error correction system for disc storage

Details Sector and track level error correction system for disc storage Sector and track level error correction system for disc storage

1996-09-16

1998-12-01

Moise, Emmanuel L.

Excavating

371 102, 39518204, G11C 2900

Patent

active

058449191

ABSTRACT:
A disc storage system comprising a sector level ECS for correcting errors within a sector during readback, and a track level ECS for correcting a sector that becomes unrecoverable at the sector level either because the number of hard errors exceeds the error correction capability of the sector redundancy, or because the sector is unreadable due, for instance, to an inability to synchronize to the sector data. A data buffer stores the data sectors, and a redundancy buffer stores the track level redundancy data. If during a read operation a data sector is determined to be unrecoverable using the sector level redundancy, the storage system corrects the unrecoverable sector using the track level redundancy.

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