Automatic duty cycle correction circuit with programmable...

Details Automatic duty cycle correction circuit with programmable... Automatic duty cycle correction circuit with programmable...

2007-06-22

2009-08-04

Luu, An T (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Rectangular or pulse waveform width control

C327S176000

Reexamination Certificate

active

07570094

ABSTRACT:
A duty cycle correcting circuit for an integrated circuit memory automatically corrects the duty cycle of an input clock by measuring the relative difference between the high time and low time of the input signal and using this measurement to achieve a same-frequency, duty cycle adjusted output signal. The duty cycle correcting circuit includes a duty cycle adjust circuit that uses two series-connected N-channel transistors to control the pull-up slew rate of a signal and another N-channel transistor to control the pull-down slew rate of the same signal, two dual-slope integrator circuits, and input and output signal buffering.

REFERENCES:
patent: 5013940 (1991-05-01), Ansel
patent: 6172546 (2001-01-01), Liu et al.
patent: 6643790 (2003-11-01), Yu et al.
patent: 6781419 (2004-08-01), Harrison
patent: 6853225 (2005-02-01), Lee
patent: 6975100 (2005-12-01), Doppke et al.
patent: 7005913 (2006-02-01), Diffenderfer
patent: 7015739 (2006-03-01), Lee et al.
patent: 7202720 (2007-04-01), Kim
patent: 7352228 (2008-04-01), Ali et al.
patent: 2004/0061525 (2004-04-01), Tamaki

Affiliated with

Also associated with

Rating

Automatic duty cycle correction circuit with programmable... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Automatic duty cycle correction circuit with programmable..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Automatic duty cycle correction circuit with programmable... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4084185