Circuit for recognizing cyclically occurring pulse sequences

Details Circuit for recognizing cyclically occurring pulse sequences Circuit for recognizing cyclically occurring pulse sequences

1980-05-21

1983-01-25

Heyman, John S.

328119, 328130, 328 48, H03K 519, H03K 2130, H03K 2136

Patent

active

043706185

ABSTRACT:
A circuit for recognizing cyclically occurring pulse sequences includes a counter controlled by a D-type flip-flop circuit to start counting the pulses in the pulse sequence when a specific pulse event occurs. The output of the counter is compared by a comparator with a preset number to provide an output via a gate if the specific pulse event occurs when the number of pulses counted by the counter is equal to the preset number. If the count rises above the preset number the comparator resets the flip-flop and no output is produced by the gate.

REFERENCES:
patent: 3936745 (1976-02-01), Harrington
patent: 3997798 (1976-12-01), Breimesser
patent: 4023109 (1977-05-01), Shreve
patent: 4152655 (1979-05-01), Przybyla et al.
patent: 4164712 (1979-08-01), Collins
patent: 4227154 (1980-10-01), Ebert

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