Method and apparatus for timing acquisition of partial response

Details Method and apparatus for timing acquisition of partial response Method and apparatus for timing acquisition of partial response

1994-04-18

1995-11-07

Callahan, Timothy P.

Miscellaneous active electrical nonlinear devices, circuits, and

Specific signal discriminating without subsequent control

By phase

327 74, G01R 2900

Patent

active

054650593

ABSTRACT:
A method and apparatus for timing acquisition of partial response class IV Signaling is described. The invention uses an acquisition logic block to determine an output sequence that best matches a preamble pattern. The logic block analyzes current quantizer output X and the two previous decisions X.sub.n and X.sub.n-1. The logic uses these values to determine the next value X.sub.n+1 so that the best match occurs. The invention is implemented with OR gates, AND gates, and D flip-flops and can operate in acquiring mode or tracking mode.

REFERENCES:
patent: 4975897 (1990-12-01), Tanahashi
patent: 5373400 (1994-12-01), Kovacs

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