Phase tolerant servo gray code detector

Details Phase tolerant servo gray code detector Phase tolerant servo gray code detector

2005-02-15

2005-02-15

Tran, Sinh (Department: 2651)

Dynamic magnetic information storage or retrieval

General processing of a digital signal

Address coding

C360S067000

Reexamination Certificate

active

06856480

ABSTRACT:
Methods and apparatus are disclosed for detecting PR4 equalized Gray codes, providing phase tolerant Gray codes and detection thereof. A Gray code detector is provided, which receives a PR4 equalized Gray code input signal and provides a binary detector output. The detector comprises a plurality of filters providing Euclidean distance values based on the input signal. A logic component selectively provides the detector output based on one or more of the Euclidean distance values from the matched filters, according to one or more criteria, such as the detector mode.

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