Period measurement system
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United States of America Patent
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-
Jul 31, 1984
Grant Date -
N/A
app pub date -
Jul 7, 1981
filing date -
Jul 17, 1980
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
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.
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