Random timer

Details Random timer Random timer

1983-08-10

1985-08-13

Heyman, John S.

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

Systems

Using shift register

377109, 377 56, 331 78, 364717, H03K 2114

Patent

active

045354669

ABSTRACT:
The timer generates a selected number of control pulses per hour, at unpredictable (pseudo-random) intervals, for use with a time lapse video tape recorder used for time studies. The hour is divided into equal intervals to provide the number of samples required per hour, and one trigger pulse is generated randomly timed within each interval. A noise generator drives a counter whose outputs are loaded every Nth clock pulse into an N-stage shift register. The contents of the shift register are shifted out serially at the clock frequency.

REFERENCES:
patent: 3614399 (1971-10-01), Linz
patent: 3703649 (1972-11-01), Maida
patent: 3777278 (1973-12-01), Majeau et al.
patent: 3961169 (1976-06-01), Bishop et al.
patent: 4151404 (1979-04-01), Harrington et al.
patent: 4168525 (1979-09-01), Russell
patent: 4183088 (1980-01-01), Simmons
patent: 4255793 (1981-03-01), Nakamura
patent: 4280063 (1981-07-01), Yokomori et al.
patent: 4291386 (1981-09-01), Bass
patent: 4325081 (1982-04-01), Abe et al.
patent: 4365145 (1982-12-01), Frentress

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