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LIGHT-EMITTING STYLUS AND USER INPUT DEVICE USING SAME

  • US 20090167728A1
  • Filed: 03/13/2009
  • Published: 07/02/2009
  • Est. Priority Date: 11/25/2003
  • Status: Abandoned Application
First Claim
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1. A stylus for use with a light-sensitive user input device, comprising:

  • a light-emitting module configured to emit a first light beam through a tip of the stylus when the tip is not in contact with an input surface of the input device, and configured to emit a second light beam through the tip of the stylus when the tip sufficiently contacts the input surface, the second light beam having a beam spread that differs from a beam spread of the first light beam, the difference in beam spread being detectable by the light sensitive user input device.

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