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MULTI-TOUCH VIRTUAL KEYBOARD

  • US 20090231281A1
  • Filed: 03/11/2008
  • Published: 09/17/2009
  • Est. Priority Date: 03/11/2008
  • Status: Abandoned Application
First Claim
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1. A multi-touch surface computing system, comprising:

  • a display surface;

    an image generation subsystem positioned to project display images on the display surface;

    a reference light source positioned to direct reference light at the display surface, wherein a pattern of reflection of the reference light changes responsive to touch input on the display surface;

    a sensor to detect the pattern of reflection;

    a processing subsystem operatively connected to the image generation subsystem and the sensor;

    computer-readable media operatively connected to the processing subsystem and including instructions that, when executed by the processing subsystem, cause the image generation subsystem to project a virtual keyboard image on the display surface, the virtual keyboard image including a primary key and a modifier key;

    the computer-readable media further including instructions that, when executed by the processing subsystem, translate the pattern of reflection created responsive to touch input at only the primary key into a first keyboard message; and

    the computer-readable media further including instructions that, when executed by the processing subsystem, translate the pattern of reflection created responsive to touch input at both the primary key and the modifier key into a second keyboard message, different than the first keyboard message.

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