Digitally implemented phase and lock indicators for a bit synchr

Details Digitally implemented phase and lock indicators for a bit synchr Digitally implemented phase and lock indicators for a bit synchr

1993-12-21

1996-01-16

Chin, Stephen

Pulse or digital communications

Synchronizers

Phase displacement, slip or jitter correction

331 4, 331 15, 331 25, 331DIG2, 327 43, 327 5, 375327, 375328, 375371, H03D 324

Patent

active

054854849

ABSTRACT:
A bit synchronizing circuit is provided with both analog and digital devices in an enhanced bit synchronizing circuit system. There is provided a digital phase detector and a digital lock detector which are compatible with analog circuity. The output of the digital phase detector is coupled to an analog summing circuit having an output which is coupled to a low pass filter (LPF). The analog output of the LPF is coupled to the input of a voltage controlled oscillator (VCO) which produces a data rate clock. The output of the digital lock detector is coupled to an analog summing circuit having an output coupled to a low pass filter (LPF). The output of the LPF is coupled to a comparator for generating a lock indication signal output. The output of the comparator is also coupled to a sweep circuit which is coupled to an input of the voltage controlled oscillator for resolving frequency uncertainties in the bit synchronizing circuit.

REFERENCES:
patent: 4419760 (1983-12-01), Bjornhalt
patent: 4617520 (1986-10-01), Lenne
patent: 4780893 (1988-10-01), Henkelman, Jr.
patent: 4837781 (1989-06-01), Huckling
patent: 5121071 (1992-06-01), Kelly et al.
patent: 5233636 (1993-08-01), Lee et al.
patent: 5301196 (1994-04-01), Ewen et al.
patent: 5313499 (1994-05-01), Coburn

Affiliated with

Also associated with

Rating

Digitally implemented phase and lock indicators for a bit synchr does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Digitally implemented phase and lock indicators for a bit synchr, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Digitally implemented phase and lock indicators for a bit synchr will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-315071