Method and system for waking up a device due to motion

CAFC
  • US 8,872,646 B2
  • Filed: 10/08/2008
  • Issued: 10/28/2014
  • Est. Priority Date: 10/08/2008
  • Status: Active Grant
First Claim
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1. A method comprising:

  • receiving motion data from a motion sensor in a device, the motion sensor sensing motion along three axes;

    verifying whether the motion data includes one or more glitches and removing the one or more glitches from the motion data;

    determining an idle sample value for a dominant axis of the device, the dominant axis defined as the axis with a largest effect from gravity among the three axes, the idle sample value comprising an average of accelerations over a sample period along the dominant axis recorded when the device goes to idle mode after a period of inactivity;

    registering a motion of the device based on the motion data from the motion sensor;

    determining whether the motion caused a change in the dominant axis; and

    waking up the device when the motion of the device indicates the change in the dominant axis of the device, the dominant axis being the axis with the largest effect from gravity among the three axes.

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