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Virtual data entry device and method for input of alphanumeric and other data

  • US 20060101349A1
  • Filed: 12/21/2005
  • Published: 05/11/2006
  • Est. Priority Date: 05/29/2000
  • Status: Active Grant
First Claim
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1. Apparatus for inputting at least alpha-numeric information into a computer comprising:

  • a projector, projecting an image of at least part of a keyboard onto an inert surface;

    a single two dimensional sensor comprising at least one infrared illuminator generating a generally planar beam generally parallel to said inert surface and also comprising an array of discrete sensing elements and at least one lens operative to image a region overlying each of a plurality of keyboard locations onto a corresponding at least one of said array of discrete sensing elements, said single two dimensional sensor sensing user indicator interaction with specific locations on said image of at least part of a keyboard; and

    at least alpha-numeric information generation circuitry employing an output from said single two dimensional sensor for providing an at least alpha-numeric output.

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