Brightness controlling apparatus

Details Brightness controlling apparatus Brightness controlling apparatus

2001-08-23

2008-09-09

Owens, Douglas W. (Department: 2821)

Electric lamp and discharge devices: systems

Plural power supplies

Plural cathode and/or anode load device

C345S102000, C345S182000, C345S690000

Reexamination Certificate

active

07423383

ABSTRACT:
An apparatus and method for enabling screen brightness of a display unit to be adjusted automatically according to display brightness, thereby improving the visibility of the display screen to a viewing user. A brightness adjusting system including a gray scale gradation evaluator for calculating the display brightness in a certain window displayed on the screen of a display unit and a display controller for controlling the screen brightness of the display unit according to the display brightness in the certain window, calculated by the gray scale gradation evaluator, is provided for.

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