Programmable duty-cycle generator

Details Programmable duty-cycle generator Programmable duty-cycle generator

2005-12-22

2009-11-03

Le, Dinh T. (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Rectangular or pulse waveform width control

C327S172000

Reexamination Certificate

active

07612592

ABSTRACT:
A duty-cycle generator including, in one embodiment, a duty-cycle adjustment circuit and a delay processor. The duty-cycle adjustment circuit is adapted to receive an input clock signal having an input duty cycle, generate first and second versions of the input clock signal having different amounts of delay, and combine the first and second versions of the input clock signal to generate an output clock signal having an output duty cycle different from the input duty cycle. The delay processor is adapted to generate at least one control signal for controlling operations of the duty-cycle adjustment circuit based on a comparison of a characteristic of the output clock signal with a corresponding characteristic of a target output clock signal.

REFERENCES:
patent: 5757218 (1998-05-01), Blum
patent: 5963071 (1999-10-01), Dowlatabadi
patent: 6426660 (2002-07-01), Ho et al.
patent: 6650197 (2003-11-01), Sekiya

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