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Save battery life with ambient light sensors

Posted: 16 Jul 2008 ?? ?Print Version ?Bookmark and Share

Keywords:ambient light sensing? LED backlight driving? reduce power? battery?

Active optical sensors can dramatically increase the range and usefulness of ambient light sensors, which are now found in a wide range of display applications. But power management strategies are critical in order to reduce total consumption and preserve battery life in portable or cellphone products where optical sensors are used. By applying ambient light sensing in conjunction with LED backlight driving, power consumption can be reduced significantlywhile battery life increases. Advances in active solutions are exemplified by two examples, an ambient light sensor for a notebook PC and for a cellphone display.

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