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Optical input device

  • US 20040075640A1
  • Filed: 10/18/2002
  • Published: 04/22/2004
  • Est. Priority Date: 10/18/2002
  • Status: Abandoned Application
First Claim
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1. An optical input device, comprising:

  • a case;

    a floating board arranged to be moved on the case and having a top surface facing outside the case and a bottom surface facing inside the case;

    a light source that projects a light beam toward the bottom surface of the floating board, a sensor arranged to detect a light beam reflected from the floating board;

    whereby the movement of the floating board will cause a corresponding cursor-moving signal on a display.

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