Clock signal supply system

Details Clock signal supply system Clock signal supply system

1991-04-22

1993-02-02

Callahan, Timothy P.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

328 63, 328155, 307262, H03K 500, H03K 513

Patent

active

051840278

ABSTRACT:
A clock signal supply system provides for automatic accurate phase adjustment of clock signals. The system includes an oscillator that produces clock signals and a reference generator that generates a reference signal that has a predetermined relationship with respect to the clock signals produced by the oscillator. At each location where the clock signal is to be received, an adjusting circuit is provided to adjust the phase of the received clock signals. Such an adjusting circuit may include a variable delay circuit which receives the clock signal and produces an output which is constituted by the clock signal having a varied delay, to the remainder of the attached circuits. Further, the output of the variable delay is fed back to a phase difference detection circuit. The reference signal is second input to the phase difference detection circuit. This phase difference detection circuit compares the difference of the reference signal and the output of the variable delay circuit and produces the control signal to the variable delay circuit which will further adjust the phase of the clock signal that is received. This adjustment is carried out at each of the locations where the clock signal is to be received, thereby providing automatic adjustment of the phase of the clock signals.

REFERENCES:
patent: 3436647 (1969-04-01), Gobeli et al.
patent: 3654390 (1972-04-01), Puckette
patent: 3763317 (1973-10-01), Coleman, Jr. et al.
patent: 3921079 (1975-11-01), Heffner et al.
patent: 3983498 (1976-09-01), Malek
patent: 4013969 (1977-03-01), Dennison
patent: 4114111 (1978-09-01), Winters
patent: 4165490 (1979-08-01), Howe, Jr. et al.
patent: 4229824 (1980-10-01), En
patent: 4280099 (1981-07-01), Rattlingourd
patent: 4309649 (1982-01-01), Naito
patent: 4373204 (1983-02-01), Brooks
patent: 4419739 (1983-12-01), Blum
patent: 4461014 (1984-04-01), Fujino
patent: 4495468 (1985-01-01), Richards et al.
patent: 4495473 (1985-01-01), Treise
patent: 4791386 (1988-12-01), Shiga
patent: 5043596 (1991-08-01), Masuda et al.
Howe, Jr., L. D., IBM Technical Disclosure Bulletin, vol. 21, No. 3, "Automatic Clock Adjustment Mechanism", Aug. 1978, pp. 995-997.
Anceau, "A Synchronous Approach for Clocking VLSI Systems", IEEE Journal of S.S.C., vol. SC-17, No. 1, Feb. 1982, pp. 51-56.
IBM Technical Disclosure Bulletin vol. 20 No. 11B Apr. 1978 pp. 4889-4890, Garriss.
EPO Search Report EP 88101998.
IBM Tecnical Disclosure Bulletin, vol. 18, No. 6 Nov. 1975 pp. 1912-1913, Koetzle.
IBM Technical Disclosure Bulletin vol. 24, No. 2 Jul. 1981 pp. 895-897, Blum.
"Analog Data Manual 1983" Signetics, p. 11-8.

Affiliated with

Also associated with

Rating

Clock signal supply system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Clock signal supply system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Clock signal supply system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-8563