Portable device for measuring heartbeat rate with compensation for extraneous signals
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United States of America Patent
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-
Dec 29, 1981
Grant Date -
N/A
app pub date -
Dec 31, 1979
filing date -
Dec 31, 1979
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A device mounted on and coupled to the body of the wearer for measuring and visually displaying the pulse rate or other body functions. A primary sensor is positioned on the skin at a position to sense arterial pressure variations and generate a pulse signal responsive thereto while a secondary sensor is positioned close by to generate signals due to extraneous influences of the body and environment. These extraneous signals are subtracted from the pulse signal to increase the accuracy thereof.
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