Period determination of a periodic signal

Details Period determination of a periodic signal Period determination of a periodic signal

1998-03-24

2000-12-26

Hoff, Marc S.

Data processing: measuring, calibrating, or testing

Measurement system in a specific environment

Electrical signal parameter measurement system

702 66, G01R 2500, G01R 2902, G06F 1900

Patent

active

06167351&

ABSTRACT:
A method for determining the period of a periodic signal, possibly including noise, includes the step of calculating a signal representing the difference between the periodic signal, and the periodic signal delayed by a time T. The variance of the difference representative signal is then computed. The steps of computing a difference signal, and determining the variance of the difference signal is repeated for different times T. The period of the periodic signal is determined to be the time T producing the minimum variance. Apparatus implementing this method includes a source of the periodic signal. A difference circuit computes a signal representing the difference between the periodic signal, and the periodic signal delayed by a time T, and a variance circuit computes a signal representing the variance of the difference representative signal. A control circuit varies the time T. A minimum selector selects the time T producing the minimum variance as the period of the periodic signal.

REFERENCES:
patent: 3617900 (1971-11-01), Fink et al.
patent: 4025920 (1977-05-01), Reitboeck et al.
patent: 4486900 (1984-12-01), Cox et al.
patent: 4587620 (1986-05-01), Niimi et al.
patent: 4979110 (1990-12-01), Albrecht et al.
patent: 4982439 (1991-01-01), Castelaz
patent: 5239497 (1993-08-01), McKay et al.
patent: 5343404 (1994-08-01), Girgis
patent: 5640431 (1997-06-01), Bruckert et al.
patent: 5692008 (1997-11-01), Van Nee

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