Search tuning system for television receiver

Details Search tuning system for television receiver Search tuning system for television receiver

1978-09-27

1980-07-08

Smith, Alfred E.

Tuners

Tuner unit directly responsive to voltage and/or current...

Reactance tuning

455164, H03J 304

Patent

active

042119880

ABSTRACT:
A search tuning type channel detector system for television receivers. When AFC voltage of a tuner has attained a first predetermined voltage level, frequency sweeping direction for tuning is reversed and stopped thereby to tune the tuner at an optimum tuning frequency. Means are provided to allow the inversion as well as stoppage of the frequency sweeping only when AFC voltage has attained a second predetermined voltage level, thereby to exclude possible erroneous operation due to noise or the like spurious signal components.

REFERENCES:
patent: 3651411 (1972-03-01), Zlotnick

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