Frequency divider circuit

Details Frequency divider circuit Frequency divider circuit

1990-02-26

1992-02-04

Heyman, John S.

Electrical pulse counters, pulse dividers, or shift registers: c

Starting, stopping, presetting or resetting the counter

377111, 377114, 377 28, H03K 2138

Patent

active

050864416

ABSTRACT:
A frequency divider circuit having N flip-flops connected in series, includes a logic circuit for monitoring at least one of the outputs of the N flip-flops and halting the frequency division operation of a prior stage flip-flop when the value of the output which is monitored is equal to a predetermined value when a reset signal is input, and restarting frequency division operation when the reset signal is cancelled.

REFERENCES:
patent: 3258696 (1966-06-01), Heymann
patent: 3639740 (1972-02-01), Escoffier et al.
patent: 3930169 (1975-12-01), Kuhn
patent: 3992635 (1976-11-01), Suzuki et al.
patent: 4150337 (1979-04-01), Sheller
patent: 4181862 (1980-01-01), Dingwall
patent: 4334194 (1982-06-01), Rittenbach
patent: 4558457 (1985-12-01), Tabata
patent: 4630295 (1986-12-01), Kamuro et al.
patent: 4882505 (1989-11-01), Furman
Ohhata et al, "A 14mV 2GHz . . . Prescaler", The Transactions of The OEICE, 1987, No. 147, pp. 1-148.
Saito et al, "Intermittent Operation of . . . Synthesizer", The Transactions of the IEICE, No MW87-121, pp. 85-90.

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