Matching the clock phase of duplicated clock circuits

Details Matching the clock phase of duplicated clock circuits Matching the clock phase of duplicated clock circuits

1991-11-05

1993-08-24

Chin, Stephen

Pulse or digital communications

Spread spectrum

Direct sequence

370103, H04L 700

Patent

active

052395626

ABSTRACT:
An apparatus for duplicated clock circuits using equivalent devices in monolithically package devices and cross-coupling local clock signals of each clock circuit over the appropriate link cables with the other clock circuit. The apparatus distributes the local clock signal to both clock circuits for precise delay compensation. Further, the apparatus utilizes the propagation delay matching of semiconductor devices in the same package on the same monolithic substrate and the matching of interconnection impedances in corresponding devices in different packages to closely match the phase of duplicated clock signals. It further takes advantage of the fact that the locally used clock signals not normally cross-coupled are cross-coupled using cables which are chosen in length to exactly compensate for the actual cross-coupling delays in the cables; and since the routes are chosen to be the same, the temperature variations which cause small differences in propagation speeds through the cables are also compensated.

REFERENCES:
patent: 3803568 (1974-04-01), Higashide
patent: 4494211 (1985-01-01), Schwartz
patent: 5022050 (1991-06-01), Tanaka
patent: 5052028 (1991-09-01), Zwack
R. P. Abbott and D. C. Koehler, Digital Access and Cross-Connect System-System Architecture, IEEE National Telecommunications Conference 1981, vol. 1, Nov. 29-Dec. 3, 1981, B1.2.1-B1.2.7.

Affiliated with

Also associated with

Rating

Matching the clock phase of duplicated clock circuits does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Matching the clock phase of duplicated clock circuits, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Matching the clock phase of duplicated clock circuits will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-834839