Duty cycle detector with first, second, and third values

Details Duty cycle detector with first, second, and third values Duty cycle detector with first, second, and third values

2006-12-05

2006-12-05

Nguyen, Long (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Rectangular or pulse waveform width control

C327S172000

Reexamination Certificate

active

07145375

ABSTRACT:
A duty cycle detector comprising a first circuit configured to receive clock cycles including a first level and a second level. The first circuit is configured to obtain a first value based on the length of the first level and to obtain second and third values based on the length of the second level. The first value is compared to the second and the third values to determine a duty cycle range of the clock cycles.

REFERENCES:
patent: 4475086 (1984-10-01), Allen
patent: 4799022 (1989-01-01), Skierszkan
patent: 5945857 (1999-08-01), Havens
patent: 6320438 (2001-11-01), Arcus
patent: 6765421 (2004-07-01), Brox et al.
patent: 2002/0140477 (2002-10-01), Zhou et al.
patent: 2004/0075462 (2004-04-01), Kizer et al.
patent: 2004/0189364 (2004-09-01), Lee et al.

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