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Computer system with integratable touchpad/security subsystem

  • US 6,337,918 B1
  • Filed: 11/04/1996
  • Issued: 01/08/2002
  • Est. Priority Date: 11/04/1996
  • Status: Expired due to Fees
First Claim
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1. A personal computer system comprising:

  • a processor and a memory connected to one another;

    a keyboard connected to said processor; and

    a touchpad on said keyboard, said touchpad including a substantially infrared transparent surface, a plurality of sources of infrared light connected to emit at different frequencies or wavelengths on at least some occasions, and a detector of infrared light, said source arranged to direct infrared light through said touchpad surface from below and said detector arranged to detect infrared light reflected from said surface when an object is placed on said surface, said detector connected to said processor such that said processor may analyze information about the object placed on said surface.

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