Frequency dividing ratio setting device for programmable counter

Details Frequency dividing ratio setting device for programmable counter Frequency dividing ratio setting device for programmable counter

1981-05-28

1984-09-25

Shaw, Gareth D.

Boots, shoes, and leggings

377111, 377110, 364701, H03K 2136

Patent

active

044738854

ABSTRACT:
A frequency dividing ratio setting device capable of successively changing the frequency dividing ratio of a programmable counter and further changing the changed portion of the frequency dividing ratio is provided. The device comprises a circuit for generating a pulse signal corresponding to predetermined data, an adder-subtracter having first and second input terminals and adding or subtracting data supplied to first and second input terminals thereof, said first input terminal being connected to the output terminal of the pulse signal generating circuit, and a shift register to which an output signal is supplied from the adder-subtracter and supplying an input signal to a program terminal of the programmable counter and to the second input terminal of the adder-subtracter.

REFERENCES:
patent: 3651414 (1972-03-01), Jamieson
patent: 4223268 (1980-09-01), Shimizu
patent: 4234849 (1980-11-01), Crilly, Jr.
patent: 4296380 (1981-10-01), Minakuchi
patent: 4349887 (1982-09-01), Crowley

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