Apparatus for measuring the period and frequency of a signal

Details Apparatus for measuring the period and frequency of a signal Apparatus for measuring the period and frequency of a signal

1976-02-27

1977-07-19

Rolinec, Rudolph V.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Frequency of cyclic current or voltage

324 77G, 235181, G01R 2302

Patent

active

040371514

ABSTRACT:
The present invention relates to an apparatus for measuring, by cross-correlation, the period and frequency of a substantially periodic signal having random components, such as fetal heart beat signals and other biological signals.

REFERENCES:
patent: 3388398 (1968-06-01), Kratzer et al.
patent: 3714621 (1973-01-01), Waters
patent: 3750152 (1973-07-01), Waful
patent: 3816722 (1974-06-01), Sakoe et al.
patent: 3819920 (1974-06-01), Goldfischer

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