Circuit arrangement for controlling the pulse repetition frequen

Details Circuit arrangement for controlling the pulse repetition frequen Circuit arrangement for controlling the pulse repetition frequen

1977-04-11

1978-09-19

Thesz, Joseph M.

Registers

Platform operated

Platform actuated traffic counters

235 92PE, 235 92R, 328 48, H03K 2136

Patent

active

041156870

ABSTRACT:
A circuit arrangement is described wherein the pulse repetition frequency of a signal is digitally controlled in dependence on the pulse repetition frequency of a controlling signal. A presettable digital counter functioning as a frequency divider operates between preset initial and end counts and is reset to the initial value each time the end value is reached; the initial and end values are set responsive to binary signals applied to control inputs of the counter. A bistable trigger stage assumes either an idle or an operative state in dependence on the value of a control signal derived from the controlling pulse repetition frequency and a timing signal. The trigger stage output is used to control either the setting of the afore-mentioned initial value or the end value to produce either too high or too low values for the pulse repetition frequency of the controlled signal.

REFERENCES:
patent: 3413452 (1968-11-01), Schlein
patent: 3581066 (1971-05-01), Maure et al.
patent: 3840724 (1974-10-01), Tripp
patent: 3937932 (1976-02-01), Ahlgren

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