Digital phase synchronous circuit and data receiving circuit inc

Details Digital phase synchronous circuit and data receiving circuit inc Digital phase synchronous circuit and data receiving circuit inc

1996-05-31

1998-02-03

Chin, Stephen

Pulse or digital communications

Synchronizers

Phase displacement, slip or jitter correction

331 1R, H03D 324

Patent

active

057152861

ABSTRACT:
A digital phase synchronous circuit includes a phase comparing circuit for outputting a count value according to the result of a phase comparison between an output signal and an externally input reference signal; a frequency regulating circuit for inputting an oscillation signal with a predetermined repetition frequency and controlling the repetition frequency according to the count value to output it as the output signal; and a controlling circuit for controlling the frequency regulating circuit to output the oscillation signal with the predetermined repetition frequency when the input of the reference signal breaks down.

REFERENCES:
patent: 4791386 (1988-12-01), Shiga
patent: 5057794 (1991-10-01), Shih
patent: 5488641 (1996-01-01), Ozkan
patent: 5577080 (1996-11-01), Sakaue et al.

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