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On-screen input image display system

  • US 20090102813A1
  • Filed: 10/16/2008
  • Published: 04/23/2009
  • Est. Priority Date: 10/17/2007
  • Status: Active Grant
First Claim
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1. A non-screen input imaged is play system comprising a touch sensor for detecting coordinates of a touch position on a display screen of a display device,the touch sensor being disposed on the display screen of the display device and comprising a plurality of X coordinate electrodes and a plurality of Y coordinate electrodes arranged so as to cross the plurality of X coordinate electrodes via an insulator layer, both for detecting a change in capacitance due to pressing,the on-screen input image display system comprising:

  • a detection circuit for detecting a change in capacitance between the plurality of X coordinate electrodes and the plurality of Y coordinate electrodes of the touch sensor;

    an analog to digital converter for converting a detection output of the detection circuit into digital data;

    a touch panel control circuit for determining a touched coordinate point;

    a main control circuit for receiving touch coordinate data from the touch panel control circuit and for controlling the on-screen input image display system; and

    a display control circuit for controlling display on the display device,wherein the main control circuit judges occurrence of a user'"'"'s touch and coordinates of the occurrence from the touch coordinate data, and supplies a display signal corresponding to the judged coordinates to the display device via the display control circuit.

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