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Cursor positioning method and apparatus

  • US 5,059,959 A
  • Filed: 06/03/1985
  • Issued: 10/22/1991
  • Est. Priority Date: 06/03/1985
  • Status: Expired due to Fees
First Claim
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1. A control system for use with a display screen having a movable graphic element comprising:

  • a keyboard;

    means for generating a field of signals which extends generally vertically from the rear of said keyboard; and

    means responsive to reflections of said signals from an object moving in said field for changing the position of said graphic element on said display screen from a first position to a second position as a function of the direction and speed of movement of said object in said field.

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