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Electronic pointing device

  • US 5,691,747 A
  • Filed: 12/19/1994
  • Issued: 11/25/1997
  • Est. Priority Date: 12/20/1993
  • Status: Expired due to Fees
First Claim
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1. An electronic pointing device for determining a static position on a viewing screen of a computing device, the point device comprising:

  • an elastic member having an extended upper body portion and a planar bottom surface bonded to a base section, said elastic member for propagating vibrational pressure waves generated from a pressed point on said body portion, said vibrational pressure waves attenuating as they propagate across said elastic member;

    at least three pressure sensing means disposed in said base section for detecting vibrational pressure waves propagated from said pressed point and providing position indicating signals in correspondence with attenuated results of said detected vibrational pressure waves; and

    first computing means for computing projected coordinates of said pressed point in accordance with said position indicating signals for defining orthogonal coordinates of said pressed point relative to a reference point of said planar bottom section.

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