Multi-function device illumination control system and method

Details Multi-function device illumination control system and method Multi-function device illumination control system and method

2007-09-11

2007-09-11

Ramakrishnaiah, Melur (Department: 2614)

Television

Two-way video and voice communication

C348S014020, C348S236000, C455S575300

Reexamination Certificate

active

11003239

ABSTRACT:
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.

REFERENCES:
patent: 2002/0163524 (2002-11-01), Dutta
patent: 2004/0166829 (2004-08-01), Nakae et al.
patent: 2005/0041139 (2005-02-01), Lowles
patent: 2003-333141 (2003-11-01), None
U.S. Appl. No. 10/396,039, filed Mar. 25, 2003, Estes et al.

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