Electrical pulse counters – pulse dividers – or shift registers: c – Systems – Pulse multiplication or division
Patent
1984-09-21
1986-05-06
Heyman, John S.
Electrical pulse counters, pulse dividers, or shift registers: c
Systems
Pulse multiplication or division
377121, 377104, 377116, 377117, H03K 2342, H03K 2348, H03K 2352
Patent
active
045876649
ABSTRACT:
An 8.5 divider comprises a first and second 1/2 dividers to produce output pulses having phases different from each other by 90.degree., a first logic gate producing output pulses having a repetition frequency of a half of the input pulses, a third and fourth 1/2 dividers connected in series and dividing twice the output pulses of the first logic gate by two, a fifth 1/2 divider receiving the output of the fourth 1/2 divider, a second logic gate detecting the simultaneous presence of the outputs of the second, third and fifth 1/2 dividers to invert the phase of the output pulses of the first 1/2 divider and a third logic gate detecting the simultaneous presence of the outputs of the first and third 1/2 dividers and the inverted output of the fifth 1/2 divider.
REFERENCES:
patent: 3930169 (1975-12-01), Kuhn
patent: 3976946 (1976-08-01), Schroder
patent: 4041403 (1977-08-01), Chiapparoli
patent: 4114052 (1978-09-01), Manabe et al.
patent: 4295158 (1981-10-01), Nissen et al.
patent: 4348640 (1982-09-01), Clendening
patent: 4354188 (1982-10-01), Schneider
patent: 4399549 (1983-08-01), Sriuastaua
Heyman John S.
NEC Corporation
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