Coherent digital frequency shift keying system

Details Coherent digital frequency shift keying system Coherent digital frequency shift keying system

1970-08-19

1976-01-13

Griffin, Robert L.

Telegraphy

Systems

Alternating or pulsating current

325163, H04B 104, H04L 2712

Patent

active

039327043

ABSTRACT:
A frequency shift generator comprises a single source of high frequency oscillations and a programmable frequency divider. Keyed mark and space input signals serve to select two predetermined divider ratios, one for the mark frequency and the other for the space frequency. The invention provides means for generating stable electrical signals of audio frequency range by means of a coherent technique, that is, one in which the phase relationship of subsequent pulses can be precisely determined.

REFERENCES:
patent: 3031527 (1962-04-01), Barton et al.
patent: 3147442 (1964-09-01), Fritzsche et al.
patent: 3205441 (1965-09-01), Likel
patent: 3271588 (1966-09-01), Minc
patent: 3287648 (1966-11-01), Poole
patent: 3454718 (1969-07-01), Perreault
patent: 3518552 (1970-06-01), Carlow
patent: 3518553 (1970-06-01), Shu-Kuang Ho et al.
patent: 3588348 (1971-06-01), Bowling

Affiliated with

Also associated with

Rating

Coherent digital frequency shift keying 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 Coherent digital frequency shift keying system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Coherent digital frequency shift keying system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-748474