Beat detection device and beat detection method
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United States of America Patent
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Jun 24, 2014
Grant Date -
Aug 5, 2010
app pub date -
Jan 8, 2010
filing date -
Feb 2, 2009
priority date (Note) -
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status (Latency Note)
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Abstract
A beat detection device includes: a pulse wave sensor adapted to detect and output a pulse wave signal; a body motion sensor adapted to detect and output a body motion signal due to a body motion of a human body; a pulse wave signal filtering section adapted to generate an adaptive filter based on the body motion signal to extract a noise signal in the pulse wave signal, and to output a beat signal obtained by eliminating the noise signal from the pulse wave signal; and a filter coefficient setting section adapted to set a coefficient of the adaptive filter to be a predetermined value in response to detection of increase in a body motion change beyond a predetermined threshold value based on the body motion signal.
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