Channel indicator

Details Channel indicator Channel indicator

1979-05-01

1981-05-26

Bookbinder, Marc E.

Telecommunications

Receiver or analog modulated signal frequency converter

Signal selection based on frequency

324 78D, 324 78F, 331 64, 3581921, H04B 126

Patent

active

042702151

ABSTRACT:
A channel indicator suitable for use in a television receiver and an FM receiver each having an electronic tuner is disclosed in which a channel number now being received can be automatically indicated by counting the number of those local oscillation frequencies corresponding to respective channels which the local oscillation frequency of the electronic tuner has passed prior at the arrival to a desired value. Means for compensating for irregular frequency channel intervals and temperature variations are included.

REFERENCES:
patent: 3701951 (1972-10-01), Krausser
patent: 3913020 (1975-10-01), Van Anrooy
patent: 3988681 (1976-10-01), Schurmann
"Acoustic Surface Wave Filter for T.V. Tuning CKTS"-D. C. Grice et al., Aug. 1976, IBM Technical Disclosure Bulletin, vol. 19, No. 3, pp. 971-974.

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