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POINTER DETECTION APPARATUS AND POINTER DETECTION METHOD

  • US 20100321313A1
  • Filed: 03/30/2010
  • Published: 12/23/2010
  • Est. Priority Date: 06/18/2009
  • Status: Active Grant
First Claim
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1. A pointer detection apparatus, comprising:

  • a conductor pattern including a plurality of first conductors disposed in a first direction and a plurality of second conductors disposed in a second direction which crosses the first direction;

    a multi-frequency signal production circuit configured to produce a plurality of signals of different frequencies;

    a first conductor selection circuit configured to selectively supply said signals of different frequencies produced by said multi-frequency signal production circuit to those first conductors, between which N number of the first conductors are interposed, N being an integer equal to or greater than 0;

    a second conductor selection circuit configured to selectively receive detection signals from the plurality of second conductors; and

    a signal detection circuit configured to detect signals of individual frequencies, corresponding to the signals of different frequencies produced by said multi-frequency signal production circuit, which are representative of coupling states at cross points between the first conductors and the second conductors, and are received from said second conductor selection circuit.

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