| 摘要 |
Wireless communications devices, such as cellular telephones ( 100 ), include an integrated camera ( 202 ) and process image data captured by that camera ( 202 ) to determine desired device illumination levels. A controller ( 410 ) within the wireless communications device ( 100 ) causes an image to be captured by the integrated camera ( 202 ). The captured image data is processed to determine approximate ambient light levels. A level of device illumination, such as provided by a display backlight ( 416 ) and a keypad backlight ( 418 ) is controlled based upon the approximate ambient light levels.
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