Channel selector for electronic tuner having channel voltages st

Details Channel selector for electronic tuner having channel voltages st Channel selector for electronic tuner having channel voltages st

1975-05-05

1976-11-02

Gensler, Paul L.

Tuners

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

Reactance tuning

325464, 340168R, H03J 502

Patent

active

039900274

ABSTRACT:
In a channel selector of the type having an electronic tuner in which the channel selection voltage, which is different for each channel, is applied across a voltage-variable reactance element such as a varactor diode in order to select and receive the desired channel, each channel selection voltage is converted into the digital signal, and is stored in a memory block, and in selecting the desired channel, the corresponding digital signal is read out of the memory block and is converted into the analog channel-selection signal to be applied to the tuner. A completely electronic channel selection becomes possible because any mechanical parts such as variable resistors for storing the channel selection voltages may be eliminated.

REFERENCES:
patent: 3748645 (1973-07-01), Kawashima
patent: 3778736 (1973-12-01), Sakamoto
patent: 3845394 (1974-10-01), Hamada
patent: 3882400 (1975-05-01), Hamada
patent: 3906351 (1975-09-01), Evans

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