Clock signal reproduction device

Details Clock signal reproduction device Clock signal reproduction device

2005-03-29

2005-03-29

Ghebretinsae, Temesghen (Department: 2637)

Pulse or digital communications

Synchronizers

Phase displacement, slip or jitter correction

C375S376000, C713S500000

Reexamination Certificate

active

06873669

ABSTRACT:
A clock signal reproduction device is provided which comprises: a VCO7for generating a clock signal; a phase comparator1for comparing the phases of an input data signal and the clock signal and generating a first control signal; a phase/frequency comparator2for comparing the phases of a signal divided from the clock signal and a reference clock signal and generating a second control signal; a mode switching selector5for selecting the first control signal and the second control signal; an analog frequency synchronization-IN detecting circuit9for detecting whether a phase difference between the signal divided from the clock signal and the reference clock signal is within a predetermined range; and a digital frequency synchronization-OUT detecting circuit11for detecting whether a phase difference between the signal divided from the clock signal and the reference clock signal is outside of the predetermined range.

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patent: 2000-059213 (2000-02-01), None
patent: 2000-0017276 (2000-03-01), None

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