Synchronous read channel employing a sequence detector with prog

Details Synchronous read channel employing a sequence detector with prog Synchronous read channel employing a sequence detector with prog

1997-03-19

1998-12-01

Huber, Paul W.

Dynamic magnetic information storage or retrieval

General processing of a digital signal

In specific code or form

360 40, 360 51, G11B 509

Patent

active

058447385

ABSTRACT:
A synchronous read channel is disclosed which samples an analog read signal from a magnetic read head positioned over a magnetic disk medium, filters the sample values according to a desired partial response, extracts timing information from the filtered sample values, and detects an estimated data sequence from the filtered sample values using a trellis type sequence detector matched to the partial response. The trellis sequence detector comprises programmable detector levels which allows for maximum flexibility in matching the sequence detector to the partial response.

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