Clock generator circuit using phase modulation technology...

Details Clock generator circuit using phase modulation technology... Clock generator circuit using phase modulation technology...

2004-04-07

2008-07-29

Liu, Shuwang (Department: 2611)

Pulse or digital communications

Synchronizers

Phase displacement, slip or jitter correction

C375S346000, C375S371000, C375S149000, C332S127000, C381S100000, C327S158000

Reexamination Certificate

active

07406144

ABSTRACT:
A clock generator circuit, comprising: a multi-phase clock signal generator for generating a plurality of clock signals having a same frequency but difference phases according to a reference clock signal; a modulation device for generating a phase modulation signal through Delta-Sigma modulation; and a phase modulator, which is electrically coupled to the modulation device, for selecting one of the clock signals to be a modulated clock signal according to the phase modulation signal.

REFERENCES:
patent: 5903194 (1999-05-01), Opsahl et al.
patent: 6559698 (2003-05-01), Miyabe
patent: 6876710 (2005-04-01), Pitzer et al.
patent: 7079616 (2006-07-01), Castiglione et al.
patent: 2002/0171457 (2002-11-01), Fujiwara
patent: 2004/0001600 (2004-01-01), Kim et al.

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