Method and apparatus for generating a multiphase clock

Details Method and apparatus for generating a multiphase clock Method and apparatus for generating a multiphase clock

2006-07-11

2006-07-11

Lam, Tuan T. (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Phase shift by less than period of input

C327S254000

Reexamination Certificate

active

07075351

ABSTRACT:
A multiphase clock generating apparatus includes a clock generator providing an M-clock having a frequency M times that of a received reference clock. Divider circuitry is coupled to provide an alignment signal having 1/M the frequency of the M-clock. A recovery circuit recovers up to M distinct clocks from the M-clock in accordance with the alignment signal. The recovered clocks have substantially an N•180°/M phase difference from each other, wherein N≧1.

REFERENCES:
patent: 6282413 (2001-08-01), Baltus
patent: 6337976 (2002-01-01), Kudou
patent: 6466086 (2002-10-01), Syoji
patent: 6545546 (2003-04-01), Takeshita et al.

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