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Method and related device for controlling illumination of a backlight of a liquid crystal display

  • US 20040012556A1
  • Filed: 07/17/2002
  • Published: 01/22/2004
  • Est. Priority Date: 07/17/2002
  • Status: Abandoned Application
First Claim
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1. A method for controlling illumination of a backlight of a Liquid Crystal Display (LCD), the method comprising:

  • providing a light sensor capable of measuring an ambient light intensity to generate a corresponding measured ambient light intensity value;

    providing a processing circuit for interpreting the measured ambient light intensity value;

    providing a light source that is controllable by the processor;

    providing an LCD device capable of being illuminated by the light source;

    the processing circuit calculating a light source intensity value based on a desired apparent light source brightness value and the measured ambient light intensity value; and

    the processor triggering the light source to emit light at a time-averaged intensity that corresponds to the calculated light source intensity value.

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