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INFORMATION DISPLAY SYSTEM AND PROGRAM, AND OPTICAL INPUT SYSTEM, PROJECTION-TYPE IMAGES AND DISPLAY APPARATUS

  • US 20120044140A1
  • Filed: 08/17/2011
  • Published: 02/23/2012
  • Est. Priority Date: 08/19/2010
  • Status: Abandoned Application
First Claim
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1. An information display system including a pointing device and a control apparatus for detecting a locus of tip of the pointing device, the pointing device including:

  • a light emitting part configured to irradiate radiation light that radiates with the tip of the pointing device on a predetermined plane as a center,the control apparatus including;

    an image pickup unit configured to pick up a region including the radiation light on the predetermined plane;

    a detector configured to detect the radiation light from an image picked up by the image pickup unit; and

    an estimation unit configured to estimate the position of the tip of the pointing device from the radiation light detected by the detector.

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