Portable device for providing LCD display and method thereof
OwnerMilivoje Aleksicinventor
Life of this patent
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Abstract
A system and method are provided to conserve power consumption in a portable device having a liquid crystal display (LCD) screen with a backlight. The backlight provides light to support visibility of the LCD screen in low light conditions. A detector is used to identify an amount of ambient light that is incident to the LCD screen. Power generally provided to the backlight is modulated based on the amount of ambient light detected. As more ambient light is detected, less power is provided to the backlight. Power is conserved in the portable device by only providing enough power to the backlight to support the amount of ambient light available.
Claims27
A method of configuring a portable device having a display comprising the steps of:
- identifying an ambient light characteristic, wherein the ambient light characteristic includes an amount of visible light;
- identifying a display characteristic to provide adequate display visibility based on the ambient light characteristic;
- and
- modifying the display to match the display characteristic.
A method comprising:
- applying a first power to a backlight to support a liquid crystal display at a first brightness, wherein a first amount of ambient light is present;
- detecting a second amount ambient light, greater than the first amount of ambient light;
- and
- applying a second power to the backlight to support the liquid crystal display at a second brightness, wherein the second power is less than the first power.
A portable device comprising:
- a light transducer to generate a signal representative of an amount of ambient light;
- a backlight to provide light to a display;
- said display;
- and
- a backlight modulator coupled to receive the signal of the light transducer, said backlight modulator to control a power of said backlight to support said display based on the signal of the light transducer.
Dependencies are inferred from the claim text.