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Electrical device, control method, and program

  • US 9,192,065 B2
  • Filed: 01/24/2011
  • Issued: 11/17/2015
  • Est. Priority Date: 08/18/2010
  • Status: Active Grant
First Claim
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1. An electrical device that a user uses in his/her hand comprising:

  • an acceleration sensor configured to detect an acceleration;

    a timer configured to measure elapsed time;

    a calculator configured to calculate an index value regarding movement of the electrical device on the basis of an acceleration detected by the acceleration sensor;

    a determiner configured to determine whether the user is holding the electrical device on the basis of change of the index value that is obtained from the index value calculated by the calculator and an amount of time measured by the timer; and

    an operation controller configured to cancel a sleep state of the electrical device if the determiner determines that the user is holding the electrical device in his/her hand, and whereinthe determiner determines that the user is not holding the electrical device in his/her hand,if the index value exceeds a first threshold value at a first time point, then decreases to less than the first threshold value and remains without exceeding the first threshold value again while the amount of time after the first time point exceeds a first period, the first period being a predetermined time threshold, andif the index value exceeds a second threshold value greater than the first threshold value without decreasing to less than the first threshold value after the first time point, or if the index value exceeds the second threshold value by the time a second period shorter than the first period has passed after the first time point,the determiner determines that the user is holding the electrical device in his/her hand,if the index value exceeds the first threshold value at the first time point, then decreases to less than the first threshold value and exceeds the first threshold value again and the amount of time from the first time point to a point of exceeding the first threshold value again is within the first period and longer than the second period that is shorter than the first period, andif the index value does not exceed the second threshold value greater than the first threshold value.

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