Counter-based clock doubler circuits and methods

Details Counter-based clock doubler circuits and methods Counter-based clock doubler circuits and methods

2005-07-05

2005-07-05

Nguyen, Minh (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Frequency or repetition rate conversion or control

C327S116000, C377S047000

Reexamination Certificate

active

06914460

ABSTRACT:
Clock doubler circuits and methods use counters to define the positions of the output clock edges. A plurality of counters are each clocked by a count clock relatively much faster than the input clock. A first counter counts for one input clock period, and the counted value is stored. The stored value is divided by two to provide the number of counts in half of the input clock period. The divided value is provided to a second counter that counts from zero to the divided value. Thus, the second counter generates a pulse halfway through the input clock period. Other counters running at the same clock rate can be used to generate pulses at other times in the input clock cycle, as desired. The pulses from the counters are used to provide output clock edges at predetermined times during the input clock cycle.

REFERENCES:
patent: 3952253 (1976-04-01), DeVolpi et al.
patent: 4017719 (1977-04-01), Kaplan et al.
patent: 4290022 (1981-09-01), Puckette
patent: 5109395 (1992-04-01), Tanaka
patent: 5744992 (1998-04-01), Baumann
patent: 5898329 (1999-04-01), Hopkins
patent: 6023199 (2000-02-01), Cheung
patent: 6259283 (2001-07-01), Nguyen
patent: 6285226 (2001-09-01), Nguyen
patent: 6351756 (2002-02-01), Taniyoshi
patent: 6426660 (2002-07-01), Ho et al.
U.S. Appl. No. 10/460,031, filed Jun. 11, 2003, Nguyen.
U.S. Appl. No. 10/651,811, filed Aug. 29, 2003, Nguyen.
U.S. Appl. No. 10/696,226, filed Oct. 28, 2003, Nguyen.
U.S. Appl. No. 10/696,227, filed Oct. 28, 2003, Nguyen.

Affiliated with

Also associated with

Rating

Counter-based clock doubler circuits and methods does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Counter-based clock doubler circuits and methods, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Counter-based clock doubler circuits and methods will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3423190