Frequency division of an oscillating signal involving a...

Details Frequency division of an oscillating signal involving a... Frequency division of an oscillating signal involving a...

2006-03-14

2006-03-14

Callahan, Timothy P. (Department: 2816)

Electrical pulse counters, pulse dividers, or shift registers: c

Systems

Pulse multiplication or division

C327S117000

Reexamination Certificate

active

07012985

ABSTRACT:
A frequency-divider circuit performs a division operation using a divisor that can include a fraction. In one such embodiment, a first divider module includes a divider circuit that operates to divide the frequency of an input clock signal and a phase-quadrature circuit. The first divider module generates a first-divider-output signal having periodic signals with regular phase displacement therebetween and a common period that is an integer multiple of the clock signal. Using this first-divider-output signal, a second divider module performs another divide operation and is clocked as a function of a delay effected by at least one of the periodic signals. The present invention is useful in a wide variety of applications including applications having a high frequency clock source that cannot tolerate excessive loading or jitter attributable to a divider circuit.

REFERENCES:
patent: 5189685 (1993-02-01), Jaffard et al.
patent: 5448191 (1995-09-01), Meyer
patent: 5510742 (1996-04-01), Lemaire
patent: 6583674 (2003-06-01), Melava et al.
patent: 6760398 (2004-07-01), Casagrande
patent: 6785528 (2004-08-01), Carpineto
patent: 6944257 (2005-09-01), Riley

Affiliated with

Also associated with

Rating

Frequency division of an oscillating signal involving a... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Frequency division of an oscillating signal involving a..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Frequency division of an oscillating signal involving a... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3595622