Signal Processing Method and Apparatus for Processing a Physiologic Signal such as a Photoplethysmography Signal
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United States of America Patent
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Issued Date -
Oct 23, 2008
app pub date -
Apr 21, 2008
filing date -
Apr 19, 2007
priority date (Note) -
Abandoned
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Abstract
A signal processing method of processing a physiologic signal, such as a Photoplethysmography Signal having at least some cardiac components and/or respirator components in the physiologic signal, the processing including the steps of: Identifying a potential cardiac and or respiratory components of a physiologic signal wherein the potential cardiac and or respiratory components have a series of peaks and valleys; Calculating a comparison of the durations of a peak to valley sub-component and a valley to peak sub component of the potential cardiac and or respiratory components; and Utilizing the calculated comparison to evaluate the potential cardiac and or respiratory components.
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