Received signal selecting system with priority control

Details Received signal selecting system with priority control Received signal selecting system with priority control

1975-12-30

1977-11-08

Heyman, John S.

325 56, 325304, 325402, H04B 110

Patent

active

040577619

ABSTRACT:
A system, which selects the most desired signal from similar signals provided by two or more radio receivers, includes a separate arrangement of a signal quality detector, a signal selection gate, and a comparison circuit for each of the similar signals. Each detector provides an output signal level indicative of the quality of the particular one of the similar signals to which it is responsive. The comparison circuits determine from the various detector output signal levels the better signal among the similar signals and provide a control signal to the selection gate in the arrangement including the detector indicating the better signal. The selection gate in the arrangement responsive to the better signal in response to the control signal passes the better signal out of the system. A priority bus is common to all of the above-mentioned arrangements responsive to the respective similar signals. An activity signal is provided on the bus in response to the presence of a control signal to one of the selection gates. Each of the above-mentioned arrangements also includes a priority device coupled to the selection gate and arranged to determine the status of the selection gate in response to the presence of the activity signal on the bus.

REFERENCES:
patent: 3403341 (1968-09-01), Munch
patent: 3522449 (1970-08-01), McMurtrie
patent: 3693088 (1972-09-01), Rustako et al.
patent: 3729681 (1973-04-01), Elder
patent: 3729682 (1973-04-01), Elder
patent: 3984776 (1976-10-01), Stedman
patent: 4013962 (1977-03-01), Beske et al.

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