H - Electricity – 05 – B
Patent
H - Electricity
05
B
H05B 37/02 (2006.01) G09G 3/00 (2006.01) G09G 3/34 (2006.01) H04N 5/58 (2006.01) H04N 5/66 (2006.01)
Patent
CA 2476645
A method and system for automatically adjusting a backlight intensity level for displays is disclosed. The system and method are implemented in electronic devices having a camera and digital backlit displays, such that the camera is used to determine an ambient light level and the backlight level is adjusted according to the determined ambient light level. In particular, when the camera is not in use for capturing images by the user, the automatic backlight adjustment system captures a first image with the camera to determine an initial ambient light level, and then captures a second image with the camera at a later time to determine a subsequent ambient light level. The subsequent and initial ambient light levels are compared to each other and the backlight intensity level is either increased or decreased a predetermined amount for optimal viewing and low power consumption. Backlight intensity determination can be performed on the basis of a single image instead of a differential between two images.
Borden Ladner Gervais Llp
Research In Motion Limited
LandOfFree
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