Techniques for selecting phases of clock signals

Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Synchronizing

Reexamination Certificate

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C327S145000, C327S147000

Reexamination Certificate

active

07821312

ABSTRACT:
A clock signal generator circuit that receives periodic signals has a delay circuit, first and second multiplexers, and flip-flops. The delay circuit delays the periodic signals to generate delayed signals. The first multiplexer selects one of the delayed signals in response to a first select signal to generate an output clock signal. The second multiplexer selects one of the periodic signals in response to a second select signal. The flip-flops generate the first and the second select signals in response to the periodic signal selected by the second multiplexer.

REFERENCES:
patent: 6104228 (2000-08-01), Lakshmikumar
patent: 6933761 (2005-08-01), Chang
patent: 7378893 (2008-05-01), Kang
patent: 7453968 (2008-11-01), Chang et al.
patent: 2005/0200390 (2005-09-01), Starr et al.
patent: 2005/0259775 (2005-11-01), Chang et al.

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