Manual tuning pulse generator

Details Manual tuning pulse generator Manual tuning pulse generator

1978-06-20

1981-04-21

Heyman, John S.

Communications: electrical

Digital comparator systems

328 44, 328 59, 455170, H03J 504, H03J 500, H03K 2130

Patent

active

042635810

ABSTRACT:
A manual tuning pulse generator for use in an electronic tuning control device of a radio receiver having a tuning circuit, which control device utilizes an up/down counter, is disclosed which comprises a first manual means for selectively producing an up count signal and a down count signal to be supplied to the up/down counter, a second manual means ganged with said first manual means for producing a variable control signal and means responsive to the variable control signal to produce a clock pulse signal having a variable frequency, the pulses of the clock pulse signal being adapted to be counted up or down by the up/down counter the content of which is utilized to shift the tuning frequency.

REFERENCES:
patent: 3023373 (1962-02-01), Naylor
patent: 3521185 (1970-07-01), Ley
patent: 3560939 (1971-02-01), Lukacs
patent: 3573734 (1971-04-01), Williams et al.
patent: 3651469 (1972-03-01), Keese
patent: 3714585 (1973-01-01), Koch
patent: 4119902 (1978-10-01), Newell
patent: 4132905 (1979-01-01), Stein

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