System for unambiguously determining the phase of an input signa

Details System for unambiguously determining the phase of an input signa System for unambiguously determining the phase of an input signa

1993-04-06

1995-05-02

Wieder, Kenneth A.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Phase comparison

327 7, 327 12, G01R 2500

Patent

active

054123119

ABSTRACT:
A clocked digital signal processing system includes apparatus for unambiguously indicating the phase of an input signal relative to a reference clock signal. In particular, the disclosed apparatus reduces timing uncertainty between the reference clock, and the output signal of a phase detector representing the phase relationship between the input signal and the reference clock. A phase detector including a logic network provides plural comparison signals representing a phase relationship between the input and reference signals. The comparison signals are conveyed via first and second latch circuits, in respective groups, to a clocked downstream stage. The first and second latch circuits are clocked by different phases of the reference clock and provide outputs synchronous with the reference clock. The downstream stage responds to the reference clock for conveying output signals front the first and second latch circuits to an output at which the unambiguous indication appears.

REFERENCES:
patent: 4721905 (1988-01-01), Mehrgardt
patent: 4884020 (1989-11-01), Blakeslee
patent: 4963817 (1990-10-01), Kohiyama
patent: 5128624 (1992-07-01), Hoshino

Affiliated with

Also associated with

Rating

System for unambiguously determining the phase of an input signa does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with System for unambiguously determining the phase of an input signa, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System for unambiguously determining the phase of an input signa will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1140095