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BODY MOVEMENT DETECTOR, BODY MOVEMENT DETECTION METHOD AND BODY MOVEMENT DETECTION PROGRAM

  • US 20090240461A1
  • Filed: 03/09/2007
  • Published: 09/24/2009
  • Est. Priority Date: 03/14/2006
  • Status: Active Grant
First Claim
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1. :

  • A body-movement detecting apparatus comprising;

    an acceleration sensor configured to be mounted on a body of a user;

    vertical-component extracting means for extracting a vertical component of an acceleration from a detection output from the acceleration sensor;

    separating means for performing component separation of the vertical component extracted by the vertical-component extracting means into a high-band component and a low-band component;

    detecting means for detecting a peak-position candidate on the basis of the low-band component of the vertical component separated by the separating means;

    identifying means for identifying the peak-position candidate detected by the detecting means as a peak-position candidate in a case where a ratio between energy of the low-band component and energy of the high-band component in a predetermined range including the peak-position candidate is less than a predetermined value; and

    body-movement detecting means for detecting body movement of the user on the basis of the peak-position candidate identified by the identifying means.

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