Triggered clock signal generator

Details Triggered clock signal generator Triggered clock signal generator

1998-09-16

2000-07-04

Vo, Don N.

Pulse or digital communications

Synchronizers

375371, 375377, 713503, H04L 700

Patent

active

060849304

ABSTRACT:
A triggered clock signal generator produces a periodic output clock signal (CLOCK3) in response to an input TRIGGER signal, wherein a delay between the TRIGGER signal and the first pulse of the CLOCK3 signal is accurately adjustable. The apparatus includes a period generator and a phase adjuster. The period generator, using a periodic input signal (CLOCK1) as a timing reference, responds to the TRIGGER signal by producing a periodic output clock signal (CLOCK2) in adjustably delayed response to a next pulse of the CLOCK1 signal. The phase adjuster phase shifts the CLOCK2 signal to produce the CLOCK3 signal. The phase adjuster compares the phase of the CLOCK1 signal to the phase of the TRIGGER signal to determine an appropriate amount by which to phase shift the CLOCK2 signal so that the time delay between the TRIGGER signal and the first pulse of the CLOCK3 signal is independent of the phase relation between the TRIGGER and CLOCK1 signals.

REFERENCES:
patent: 3928813 (1975-12-01), Kingsford-Smith
patent: 5712883 (1998-01-01), Miller et al.
patent: 5764710 (1998-06-01), Cheng et al.
patent: 5790609 (1998-08-01), Swoboda
patent: 5956374 (1999-09-01), Iwamatsu

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