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Method and arrangement for accomplishing a function in an electronic apparatus and an electronic apparatus

  • US 20020075239A1
  • Filed: 12/10/2001
  • Published: 06/20/2002
  • Est. Priority Date: 12/15/2000
  • Status: Active Grant
First Claim
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1. A method for accomplishing a function in an electronic apparatus housed within a body, which method comprises a step of drawing a virtual keyboard on a plane by means of radiation visible to the eye, where the source of radiation visible to the eye comprises at least one laser transmitter emitting a beam of light which both draws the desired key pattern and observes the position of an obstacle in the key pattern, a step of placing an obstacle in the keyboard pattern produced, a step of receiving radiation reflected from the obstacle, and a step of determining the position of the obstacle on the basis of the signal received.

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