Screen brightness control

Details Screen brightness control Screen brightness control

1998-02-13

2000-06-20

Hjerpe, Richard A.

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

345102, 345207, 345211, 345212, G09G 330

Patent

active

060783028

ABSTRACT:
A screen-illuminating panel for a backlit LCD is intermittently adjusted to an optimal brightness level varying depending on ambient illumination at predetermined time intervals. The screen-illuminating panel is driven to hold the optimal brightness level while the screen-illuminating panel is not adjusted, a timer is used to detect a lapse of a time period to produce a timing signal after a trigger signal is received, and a power controller supplies power for brightness adjustment when the timing signal is received from the timer and outputs the trigger signal to the timer when the screen-illuminating panel has been adjusted.

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