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BEAT DETECTION DEVICE AND BEAT DETECTION METHOD

  • US 20100198087A1
  • Filed: 01/08/2010
  • Published: 08/05/2010
  • Est. Priority Date: 02/02/2009
  • Status: Active Grant
First Claim
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1. A beat detection device comprising:

  • 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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