Reproducing apparatus having clock generator controlled by detec

Details Reproducing apparatus having clock generator controlled by detec Reproducing apparatus having clock generator controlled by detec

1995-08-09

2000-08-01

Psitos, Aristotelis M.

Dynamic magnetic information storage or retrieval

General processing of a digital signal

Data clocking

327159, 375376, G11B 509

Patent

active

060975601

ABSTRACT:
An apparatus for generating a clock signal phase-synchronized with an input signal includes phase-difference detecting circuitry for detecting a phase difference between an input signal and a clock signal phase-synchronized with the input signal, detecting circuitry for detecting a tendency of an output of the phase-difference detecting circuitry and outputting a signal indicative of the tendency, and adder for adding together an output of the detecting means and the output of the phase-difference detecting circuitry, and an oscillator for receiving an output of the adder and outputting as the clock signal a signal having a frequency corresponding to the output of the adder.

REFERENCES:
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patent: 4607296 (1986-08-01), Smidth
patent: 4942370 (1990-07-01), Shigemori
patent: 5157355 (1992-10-01), Shikakura et al.
patent: 5207491 (1993-05-01), Rottinghaus
patent: 5465277 (1995-11-01), Schreurs et al.
patent: 5546032 (1996-08-01), Yatagai
patent: 5677802 (1997-10-01), Saiki et al.
patent: 5774290 (1998-06-01), Sasaki et al.

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