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Multi-dimension track-ring

  • US 5,404,152 A
  • Filed: 01/21/1994
  • Issued: 04/04/1995
  • Est. Priority Date: 02/25/1992
  • Status: Expired due to Term
First Claim
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1. A pointing device for giving data about a cursor position on a display screen, the pointing device comprising:

  • a box-like body having a surface;

    a plurality of concentric rotation dials disposed in said surface of said box-like body, said concentric rotation dials being independently rotatable both clockwise and counter-clockwise;

    detection means for detecting a quantity and a direction of rotation of each one of said concentric rotation dials;

    signal generation means for generating a position signal representing said cursor position, in accordance with said quantity and said direction of the rotations detected by said detection means; and

    a switch for providing a decision signal by which said cursor position is fixed on the display screen;

    wherein;

    said surface of said box-like body is a top surface of said box-like body; and

    said switch is disposed in a center of said concentric rotation dials so as to be surrounded by said concentric rotation dials.

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