Circuit and method for correcting duty cycle

Details Circuit and method for correcting duty cycle Circuit and method for correcting duty cycle

2007-12-20

2009-08-18

Luu, An T (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Rectangular or pulse waveform width control

C327S170000, C327S171000

Reexamination Certificate

active

07576581

ABSTRACT:
A circuit for correcting a duty cycle includes a duty ratio digital conversion block configured to output duty ratio information of an input clock signal as plural-bit digital signals, a duty ratio information analyzing block configured to analyze the duty ratio information of the input clock signal, generate edge control signals, and select any one of a plurality of delayed clock signals, and a duty ratio control block configured to control duty ratios of a selected delayed clock signal and the input clock signal in response to the edge control signals.

REFERENCES:
patent: 6853225 (2005-02-01), Lee
patent: 6859081 (2005-02-01), Hong et al.
patent: 6963235 (2005-11-01), Lee
patent: 7078949 (2006-07-01), Kim et al.
patent: 2004/0066873 (2004-04-01), Cho et al.
patent: 2006/0197565 (2006-09-01), Kang
patent: 2004-129255 (2004-04-01), None

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