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Infrared Screen-Type Space Touch Apparatus

  • US 20110148821A1
  • Filed: 12/21/2010
  • Published: 06/23/2011
  • Est. Priority Date: 12/22/2009
  • Status: Abandoned Application
First Claim
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1. An infrared screen-type space touch apparatus, comprising:

  • an infrared Light Emitting Diode (LED) array provided with infrared LEDs arranged in a line, and configured to emit infrared rays and generate an infrared screen in a space;

    an infrared camera installed in a position to allow a lens thereof to face the infrared screen;

    a pulse generation unit configured to periodically generate a pulse signal;

    an LED driver unit, coupled to the pulse generation unit, and configured to supply pulsed Direct Current (DC) power to the infrared LED array when the pulse signal is input from the pulse generation unit, and to interrupt supply of the DC power to the infrared LED array when the pulse signal is not input from the pulse generation unit; and

    a space touch sensor module, coupled to the infrared camera, and configured to sense a location touched by a user pointing means on the infrared screen from a gray scale image captured by the infrared camera.

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