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Method and apparatus for producing signals corresponding to the position of a cursor

  • US 5,065,145 A
  • Filed: 10/06/1989
  • Issued: 11/12/1991
  • Est. Priority Date: 10/06/1989
  • Status: Expired due to Fees
First Claim
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1. In a system for indicating the position of a cursor on a surface in first and second different linear directions, comprising a cursor, and means for moving said cursor with respect to said surface, the improvement wherein said means for moving said cursor comprises a first member, means for mounting said first member for movement in said first direction, a second member, means for mounting said second member to said first member for movement with respect thereto in said second direction, said cursor being mounted to said second member, first and second spaced sensing regions on said second member, the distance between said first and second regions, in said first direction, being unique for each displacement of said cursor in said second direction with respect to said first member, and sensing means mounted on a locus adjacent said first and second regions and extending in said first direction for sensing the displacements of adjacent portions of said first and second regions along said locus.

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