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MOTION DETECTION DEVICE, ELECTRONIC DEVICE, MOTION DETECTION METHOD, AND PROGRAM STORAGE MEDIUM

  • US 20120116710A1
  • Filed: 10/28/2011
  • Published: 05/10/2012
  • Est. Priority Date: 11/05/2010
  • Status: Active Grant
First Claim
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1. A motion detection device comprising:

  • an acceleration detection unit that detects acceleration components of each axis of a three-dimensional rectangular coordinate system of acceleration acting on the acceleration detection unit and outputs sets of acceleration component data;

    a separating unit that separates the outputted sets of acceleration component data into stationary components obtained by subjecting the outputted sets of acceleration component data to low-pass filter processing and motion components obtained by subtracting the stationary components from the sets of acceleration component data;

    a gravity axis determination unit that determines an axis whose separated stationary component is the largest to be a gravity axis; and

    a motion detection unit which, in a case in which an axis corresponding to a largest motion component showing a largest value of the separated motion components is an axis other than the determined gravity axis, detects a motion axis of the acceleration detection unit on the basis of the largest motion component.

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