Clock generating apparatus and clock generating method

Details Clock generating apparatus and clock generating method Clock generating apparatus and clock generating method

2011-07-26

2011-07-26

Donovan, Lincoln (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Synchronizing

C327S147000, C327S157000, C327S158000, C327S161000, C331S017000, C375S375000, C375S376000

Reexamination Certificate

active

07986176

ABSTRACT:
A clock generating apparatus includes a phase-difference measuring device for measuring a difference in phase between a reference clock and a feedback clock generated by a divider with a high-speed clock generated by a multiplier, an averager for averaging the measured phase difference, and an output clock generator for returning a self-generated output clock to the multiplier and the divider and generating an output clock synchronized with the reference clock by using the averaged phase difference and a generated operation clock. The multiplier generates the high-speed clock by multiplying the returned output clock, and the divider generates the feedback clock by dividing the returned output clock A frequency of generation of the output clock in the output clock generator is increased.

REFERENCES:
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patent: 2006/0171496 (2006-08-01), Nakamuta et al.
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International Search Report of PCT/JP2007/069202, mailing date of Nov. 27, 2007.

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