Telecommunications – Transmitter and receiver at separate stations
Patent
1989-11-29
1992-09-08
Eisenzopf, Reinhard J.
Telecommunications
Transmitter and receiver at separate stations
455 45, 455218, H04Q 700, H04Q 902, H04B 110
Patent
active
051466104
ABSTRACT:
A system for facilitating link continuity and prompt supervisory control in a communication system with discontinuous transmissions comprising varying the carrier power in a first communication unit and varying frequency deviation of a modulating signal to provide a continuous signal detectable by a second communication unit, where continuous monitoring at the second communication unit allows for rapid detection and reaction to received supervisory control signals through the use of continually comparing the received supervisory signal to an expected signal and qualifier signal to enhance the reaction time of the second communication unit.
REFERENCES:
patent: 3760355 (1973-09-01), Bruckert
patent: 3801956 (1974-04-01), Braun et al.
patent: 3855576 (1974-12-01), Braun et al.
patent: 4135158 (1979-01-01), Parmet
patent: 4625319 (1986-11-01), Krawity
patent: 4901307 (1990-02-01), Gelhouser et al.
patent: 4984290 (1991-01-01), Levene et al.
The ARRL Handbook for the Radio Amateur, ed. Charles L. Hutchinson, American Radio Rely League, Newington, CT, 1984, "Frequency Modulation" section of Chapter 18, pp. 18-18 to 18-26.
Baker James C.
Balacky William H.
DeClerk William P.
Everline Paul S.
Longshore Theodore F.
Charouel Lisa
Dempster Shawn B.
Eisenzopf Reinhard J.
Motorola Inc.
Motsinger F. John
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