Automatic pre-programming system for TV receivers

Details Automatic pre-programming system for TV receivers Automatic pre-programming system for TV receivers

1978-04-26

1980-11-25

Martin, John C.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

3581911, H04N 544

Patent

active

042361826

ABSTRACT:
An automatic tuning scheme for use in TV receivers includes a start/stop circuit which creates a search start signal and a search stop signal upon the receipt of a search start instruction and a detected incoming signal, respectively, a tuning voltage generator which generates a gradually varying tuning voltage under control of the search start signal and search stop signal, and a memory circuit for storing the tuning voltage from the generator when desired. The tuning voltage stored in the memory circuit is supplied to a tuner including a well known voltage-sensitive capacitance diode.

REFERENCES:
patent: 3676781 (1972-07-01), Worcester
patent: 3845394 (1974-10-01), Hamada
patent: 3940702 (1976-02-01), Yoshimura et al.
patent: 4004231 (1977-01-01), Elshuber et al.
patent: 4041535 (1977-08-01), Rzeszewski
patent: 4077008 (1978-02-01), Rast et al.
patent: 4085372 (1978-04-01), Mogi et al.
patent: 4127821 (1978-11-01), Okada et al.

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