×

POINTER DETECTION APPARATUS AND POINTER DETECTION METHOD

  • US 20100321314A1
  • Filed: 03/30/2010
  • Published: 12/23/2010
  • Est. Priority Date: 06/18/2009
  • Status: Active Grant
First Claim
Patent Images

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 divide the plurality of first conductors into a plurality of groups, each group including Q number of the first conductors, Q being an integer equal to or greater than 2, and the first conductor selection circuit being further configured to select one group among the plurality of groups and to supply said signals of different frequencies produced by said multi-frequency signal production circuit to those first conductors in the selected group;

    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.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×