Adjustable read channel equalization for error processing in a r

Details Adjustable read channel equalization for error processing in a r Adjustable read channel equalization for error processing in a r

1994-06-24

1996-07-02

Voeltz, Emanuel T.

Excavating

360 65, 360 67, 375345, G11C 2900

Patent

active

055330312

ABSTRACT:
In a recordable media drive, error processing is implemented in an adjustable read channel equalizer in which gain and bandwidth values can be selectively adjusted. In a write/verify procedure, the gain value is reduced, while the bandwidth is increased, thereby stressing the read channel during verification of written sectors in order to force the failure of marginal sectors. In an error recovery procedure, when a sector error is encountered, the gain value of the adjustable equalizer is initially increased and a sequence of read retries of the failed sector is initiated.

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