FM Receiver with liquid crystal signal indicator

Details FM Receiver with liquid crystal signal indicator FM Receiver with liquid crystal signal indicator

1976-03-29

1978-10-31

Griffin, Robert L.

179 15BT, 325 36, H04H 500

Patent

active

041237145

ABSTRACT:
An FM receiver having a gate circuit extracting a pilot signal contained in a stereo composite signal and a circuit driving a liquid crystal display device with the output signal from the gate circuit, in which when there exists the pilot signal, "STEREO" is displayed on the liquid crystal display device, while when there exists no pilot signal "MONO" (monoral) is displayed on the same liquid crystal display device.

REFERENCES:
patent: 2819400 (1958-01-01), Toth
patent: 3125640 (1964-03-01), Recklinghausen
patent: 3272923 (1966-09-01), Csicsatka
patent: 3297825 (1961-01-01), Jacobson
patent: 3569633 (1971-03-01), Brahman
patent: 3714595 (1973-01-01), Denenberg et al.
patent: 3781080 (1973-12-01), Aftergut
patent: 3792199 (1974-02-01), Saedi
patent: 3882490 (1975-05-01), Tashiro et al.
patent: 3896386 (1975-07-01), Ohsawa
patent: 3944749 (1976-03-01), Kahn
patent: 3999132 (1976-12-01), Smith

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