Interrupt-based phase-locked frequency multiplier

Details Interrupt-based phase-locked frequency multiplier Interrupt-based phase-locked frequency multiplier

2006-07-04

2006-07-04

Wells, Kenneth B. (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Frequency or repetition rate conversion or control

C327S159000, C327S160000

Reexamination Certificate

active

07071741

ABSTRACT:
A method and system utilize a processor's digital timer and two interrupts to form a frequency multiplier. The first interrupt's processing time window is definable by a first number of counts C1of the digital timer while the second interrupt's processing time window is definable by a second number of counts C2of the digital timer. A count value CV utilized by the system/method is based on a desired frequency multiplier N, the timer clock rate, and the time required for one cycle of an input signal. The first interrupt is triggered upon completion of one cycle of the input signal at which point the processing time window associated therewith begins. The second interrupt is triggered each time the timer's overflow signal is generated at which point the processing time window associated with the second interrupt begins. During the occurrence of the second interrupt's processing, the count value CV is modified to maintain the first interrupt's processing time window approximately centered between two of the second interrupt's processing time windows.

REFERENCES:
patent: 3916175 (1975-10-01), Lauer et al.
patent: 4941160 (1990-07-01), Sheahan
patent: 5719510 (1998-02-01), Weidner
patent: 5729166 (1998-03-01), May et al.
patent: 6657463 (2003-12-01), Velez

Affiliated with

Also associated with

Rating

Interrupt-based phase-locked frequency multiplier does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Interrupt-based phase-locked frequency multiplier, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Interrupt-based phase-locked frequency multiplier will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3589728