Method of and apparatus for detecting phase

Details Method of and apparatus for detecting phase Method of and apparatus for detecting phase

1996-07-03

2000-03-07

Chin, Stephen

Pulse or digital communications

Multilevel

Synchronized

375376, H04L 2549

Patent

active

060349980

ABSTRACT:
A phase-locked loop included in a reproduce signal processing circuit which as a magnetic recording and reproducing device or the like. The phase-locked loop accurately detects a phase and can be operated at high speed. The phase-locked loop includes a data determining circuit for judging data at individual times from sampled data in a plurality of samples and an estimated data string generating circuit for examining the correlation between each data string and each known phase-locked data string and sequentially generating the known phase-locked data string closet to the data string. A sampling phase is detected by performing an arithmetic operation on the data string estimated by the estimated data string generating circuit and the sampled data.

REFERENCES:
patent: 4672632 (1987-06-01), Andersen
patent: 4851932 (1989-07-01), Scheer et al.
patent: 5265125 (1993-11-01), Ohta
patent: 5430768 (1995-07-01), Minuhin et al.
patent: 5459757 (1995-10-01), Minuhin et al.
patent: 5585975 (1996-12-01), Bliss

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