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Position coordinate input device

  • US 4,558,757 A
  • Filed: 05/31/1984
  • Issued: 12/17/1985
  • Est. Priority Date: 06/06/1983
  • Status: Expired due to Fees
First Claim
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1. A position coordinate input device comprising:

  • an input plate;

    four elastic support members for supporting said input plate;

    four detector means for detecting that an external force has been applied to a point on said input plate, which are, respectively, provided on said elastic support members and are constituted by a pair of two first detector means yielding outputs having temperature characteristics of a first sign and a pair of two second detector means yielding outputs having temperature characteristics of a second sign opposite to the first sign; and

    a circuitry for outputting, in response to said outputs from said four detector means, data of coordinates of said point, which data are corresponding to said outputs.

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