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POINTING MEMBER, POSITION DETECTION APPARATUS AND POSITION DETECTION METHOD

  • US 20110155479A1
  • Filed: 08/24/2010
  • Published: 06/30/2011
  • Est. Priority Date: 12/25/2009
  • Status: Active Grant
First Claim
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1. A position detection apparatus, comprising:

  • a pointing member for transmitting a signal for position pointing; and

    a position detector including a sensor section that is configured to be pointed to at a position thereof by said pointing member and to receive the signal for position pointing transmitted from said pointing member;

    wherein said position detector is configured to detect the position on said sensor section pointed to by said pointing member based on the signal for position pointing received by said sensor section; and

    wherein said pointing member includes a transmission signal production section configured to produce a signal of a first frequency and a signal of a second frequency that is different from the first frequency and to control production timings of the signal of the first frequency and the signal of the second frequency in response to a pressing force applied to said pointing member when it points to a position on said sensor section, and wherein said position detector is configured to detect the position on said sensor section pointed to by said pointing member based on at least one of the signal of the first frequency and the signal of the second frequency and to detect the pressing force applied to said pointing member when it points to the position on said sensor section based on a phase difference between the signal of the first frequency and the signal of the second frequency.

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