Sync responsive clock generator for digital demodulators

Details Sync responsive clock generator for digital demodulators Sync responsive clock generator for digital demodulators

1985-03-25

1986-10-14

LaRoche, Eugene R.

Oscillators

Automatic frequency stabilization using a phase or frequency...

Afc with logic elements

307516, 307526, 328134, 331 11, 331 25, 375120, H03L 716, H03L 720

Patent

active

046175261

ABSTRACT:
A clock generator for digital demodulators is disclosed wherein a voltage-controlled oscillator (19) generates clock pulses at controlled frequency and phase in response to error signals from a phase comparator (14) and a frequency comparator (12). The phase error signal represents a phase deviation of the clock from a window pulse which is generated in response to a predetermined transition between binary "1"s and binary "0"s of an input bit stream. The frequency comparator detects a synchronization code in the input bit stream to derive the frequency error signal by counting the number of clock pulses present in the period of the detected synchronization code.

REFERENCES:
patent: 3982194 (1976-09-01), Chi et al.
patent: 4003086 (1977-01-01), Larsen et al.
patent: 4023116 (1977-05-01), Alfke et al.
patent: 4131920 (1978-12-01), Berger
patent: 4191976 (1980-03-01), Braun
patent: 4325090 (1982-04-01), Janak et al.

Affiliated with

Also associated with

Rating

Sync responsive clock generator for digital demodulators does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Sync responsive clock generator for digital demodulators, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Sync responsive clock generator for digital demodulators will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1342693