Correcting errors in disk drive read back signals by...

Details Correcting errors in disk drive read back signals by... Correcting errors in disk drive read back signals by...

2005-11-01

2005-11-01

Hudspeth, David (Department: 2651)

Dynamic magnetic information storage or retrieval

General processing of a digital signal

Data verification

C360S040000

Reexamination Certificate

active

06961197

ABSTRACT:
A signal detector to detect symbols in a read back signal. The signal detector includes a first detector to generate raw decisions as a function of the read back signal. A post processor identifies possible defects in the raw decisions. A selector selects a portion of the possible defects and generates modified decisions based upon correcting the portion of the possible defects. At least one signal decoder generates final decisions as a function of the modified and raw decisions. A decision block returns control to the selector in response to detecting excess errors in the final decisions.

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