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SENSING DEVICE, DISPLAY DEVICE, ELECTRONIC APPARATUS, AND SENSING METHOD

  • US 20090207154A1
  • Filed: 02/10/2009
  • Published: 08/20/2009
  • Est. Priority Date: 02/18/2008
  • Status: Active Grant
First Claim
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1. A sensing device comprising:

  • a plurality of sensors that are arrayed on a screen and that generate first detection signals each having a level corresponding to a touch state of an object on the screen or a distance between the object and the screen;

    a read unit that reads the first detection signals from the plurality of sensors at predetermined periods;

    a binarization unit that compares a level of each of the first detection signals read by the read unit with a threshold value and generates a second detection signal that is binarized;

    a determination unit that determines whether or not the object touches the screen on the basis of each second detection signal;

    a detection unit that detects a touch position of the object on the screen on the basis of each second detection signal; and

    a control unit that controls the read unit such that the predetermined period becomes a first period when the determination unit determines that there is no touch and that controls the read unit such that the predetermined period becomes a second period shorter than the first period when the determination unit determines that there is a touch.

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