Period measurement system

Details Period measurement system Period measurement system

G - Physics

06

G

354/22, 326/13.4

G06G 7/60 (2006.01) A61B 5/024 (2006.01) G01R 23/00 (2006.01) G01R 23/02 (2006.01) G01R 29/00 (2006.01) G04F 10/00 (2006.01)

Patent

CA 1174733

ABSTRACT OF THE DISCLOSURE A period measurement system adapted to sample a biosignal at a predetermined sampling period, find an autocorrelation function for a variable T from the sampled biosignal, and then find an autocorrelation function corresponding to the value of a phase difference variable obtained by changing the variable T along a time axis. An autocorrelation func- tion found in this manner is stored in memory and then compared with a subsequent-found autocorrelation function. The compari- son operation is repeated for successive autocorrelation func- tions, thereby to find a peak of autocorrelation functions to measure the period of the biosignal.

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