Qualcomm Incorporated

Martin J Williams

Mazen Chmaytelli

Bilhan Kirbas

Samir Khalil Khazaka

James J Willkie

A wireless communication device ( ) includes a display ( ) having a backlight ( ). A backlight controller ( ) selectively enables the backlight ( ) to minimize power consumption and conserve energy in a battery ( ). In one embodiment, a receiver ( ) receives a time-of-day message from a remote location to set a timer ( ) with the current time-of-day. The current time-of-day is compared with a predetermined time-of-day and the backlight controller ( ) enables and disables the backlight ( ) at predetermined times-of-day. The wireless communication device ( ) may also include a GPS receiver ( ), to determine the location of the device. The backlight controller ( ) can determine the sunrise or sunset times for the specific location. The GPS data may be used in combination with the time-of-day message. A photosensor ( ) can detect ambient light levels and generate an electrical signal corresponding thereto. The backlight controller ( ) may use the photosensor ( ) to determine ambient light levels and to enable or disable the backlight ( ) based only on ambient light levels. The photosensor signal can be used in combination with the time-of-day message and/or the location data from the GPS receiver ( ) to control the backlight ( ).

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San Diego, CA, United States of America

Martin J Williams