Measurement averaging counting apparatus employing a randomly ph

Details Measurement averaging counting apparatus employing a randomly ph Measurement averaging counting apparatus employing a randomly ph

1974-08-12

1976-02-10

Kominski, John

Electricity: measuring and testing

Electrical speed measuring

Including 'event' sensing means

235 92TF, 235 92PS, 2351513, 328129, 328130, 331 78, 324 78D, 324 83D, 332 30V, G04F 1106

Patent

active

039380424

ABSTRACT:
A measurement averaging counting apparatus employing a randomly phase modulated time base provides resolution improvement when measuring an applied signal comprising time intervals or pulsed frequencies repetitively occurring at rates synchronous to a counter's clock frequency.
The phase of a reference frequency is varied in response to a random signal. The phase modulated reference frequency is applied to a frequency multiplier chain which multiplies both the frequency and the effective amount of phase modulation. The randomly phase shifting output of the frequency multiplier chain is applied as a clock signal to a measurement averaging counter thereby destroying coherence between the clock signal and the applied signal and allowing statistical averaging to take place.

REFERENCES:
patent: 3159801 (1964-12-01), Wiedemann
patent: 3165707 (1965-01-01), Clapper
patent: 3581191 (1971-05-01), Anderson
patent: 3675148 (1972-07-01), Edwards
patent: 3816765 (1974-06-01), Goyer

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