03938042 is referenced by 7 patents and cites 5 patents.

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.

Title
Measurement averaging counting apparatus employing a randomly phase modulated time base to improve counting resolution
Application Number
437460
Publication Number
3938042
Application Date
August 12, 1974
Publication Date
February 10, 1976
Inventor
David C Chu
Woodside
CA, US
John H Gliever
San Jose
CA, US
Agent
Theodore S Park
Assignee
Hewlett Packard Company
CA, US
IPC
G04F 11/06
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