Phase comparator and method of controlling power saving...

Pulse or digital communications – Synchronizers – Phase displacement – slip or jitter correction

Reexamination Certificate

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C331S00100A

Reexamination Certificate

active

07103132

ABSTRACT:
A power saving operation control method and device for a phase comparator unit are provided. The control device includes: a reference signal frequency dividing unit which divides the frequency of a reference signal to generate a reference frequency divided signal; a comparison signal frequency unit which divides an input signal to generate a comparison frequency divided signal; a phase comparator which compares the phases of the reference frequency divided signal and the comparison frequency divided signal; a canceling signal generator which generates a power saving state canceling signal in accordance with the reference frequency divided signal and the comparison frequency divided signal; a first initializing signal generator which generates a first initializing signal for initializing the reference signal frequency dividing unit in accordance with the power saving state canceling signal; and a second initializing signal generator which generates a second initializing signal for initializing the comparison signal frequency dividing unit in accordance with the power saving state canceling signal.

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patent: 10-041815 (1998-02-01), None
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patent: 2001-111420 (2001-04-01), None
Office Action from Japanese Patent Office in the basic Japanese patent application No. 11-120620 mailed on Aug. 26, 2003.

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