04463425 is referenced by 27 patents and cites 5 patents.

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

Title
Period measurement system
Application Number
6/281163
Publication Number
4463425
Application Date
July 7, 1981
Publication Date
July 31, 1984
Inventor
Masakazu Murase
Fujinomiya
JP
Toshinori Hirano
Fujinomiya
JP
Agent
Frishauf Holtz Goodman & Woodward
Assignee
Terumo Corporation
JP
IPC
G01R 23/02
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