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Method and apparatus for a virtual display/keyboard for a PDA

  • US 6,266,048 B1
  • Filed: 08/27/1998
  • Issued: 07/24/2001
  • Est. Priority Date: 08/27/1998
  • Status: Expired due to Term
First Claim
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1. A display/keyboard of a hand-held personal digital assistant comprising:

  • a virtual display projected from said personal digital assistant by means of a Digital Micro mirror Display positioned within said personal digital assistant onto a substantially flat, light colored surface located remotely from said personal digital assistant;

    a virtual keyboard projected from said personal digital assistant by means of a Digital Micro mirror Display positioned within said personal digital assistant onto said substantially flat, light colored surface, whereby said virtual display and said virtual keyboard comprise an area which is larger than the area of any surface on said personal digital assistant; and

    two laser sensors projected across said virtual keyboard and substantially parallel to said substantially flat, light colored surface, wherein said laser sensors are intercepted over a virtual key of said virtual keyboard thereby creating input, and said personal digital assistant processes said input as if a physical key on a physical keyboard had been selected.

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