Duty cycle corrector

Details Duty cycle corrector Duty cycle corrector

2007-06-12

2007-06-12

Nguyen, Long (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Rectangular or pulse waveform width control

C327S239000

Reexamination Certificate

active

11032459

ABSTRACT:
A duty cycle corrector comprising a first circuit and a second circuit. The first circuit is configured to receive a clock signal having a first phase and a second phase and to obtain a first threshold value based on the length of the first phase and part of the second phase and provide a first pulse and response to the first threshold value. The second circuit is configured to receive the clock signal and to obtain a second threshold value based on the length of the second phase and part of the first phase and provide a second pulse in response to the second threshold value. The time between the start of the first pulse and the start of the second pulse is substantially one half clock cycle.

REFERENCES:
patent: 5572159 (1996-11-01), McFarland
patent: 5614855 (1997-03-01), Lee et al.
patent: 5945857 (1999-08-01), Havens
patent: 6222411 (2001-04-01), Chu et al.
patent: 6452432 (2002-09-01), Kim
patent: 6781419 (2004-08-01), Harrison
patent: 6847582 (2005-01-01), Pan
patent: 2001/0043103 (2001-11-01), Uehara et al.
patent: 2004/0075462 (2004-04-01), Kizer et al.
patent: 2004/0189364 (2004-09-01), Lee et al.

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