Lamp drive apparatus and drive method of a notebook computer

Details Lamp drive apparatus and drive method of a notebook computer Lamp drive apparatus and drive method of a notebook computer

2006-05-09

2006-05-09

Awad, Amr A. (Department: 2675)

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

C345S102000, C315S158000, C315S309000

Reexamination Certificate

active

07042434

ABSTRACT:
This present invention relates to a lamp drive apparatus and a drive method for an LCD equipped portable electronics to maintain a user-selected level of brightness in accordance with surrounding temperature of the lamp. In one operation mode a lamp drive apparatus reduces the current, which is applied into the lamp to maintain the already selected level of brightness in accordance with a detected lamp surrounding temperature where the brightness of the lamp has already been set in the LCD, to make the LCD device to illuminate no brighter than the selected level of brightness. Accordingly, the battery power can be used more efficiently or effectively. Thus, the battery life can be extended.

REFERENCES:
patent: 4659183 (1987-04-01), Suzawa
patent: 5907222 (1999-05-01), Lengyel et al.
patent: 6388388 (2002-05-01), Weindorf et al.
patent: 6636190 (2003-10-01), Hirakata et al.
patent: 10148808 (1998-06-01), None
patent: 10-203715 (1998-07-01), None

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