Brightness controlling apparatus, brightness adjusting system, computer system, liquid crystal display unit, brightness controlling method, computer software, and storage medium
AssigneeInternational Business Machines Corporation
InventorSeiichi Kawano
Life of this patent
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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 20 for calculating the display brightness in a certain window displayed on the screen of a display-unit and a display controller 30 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 20, is provided for.
Claims3
1) A-computer system, comprising:
- a processor for executing an arithmetic operation;
- and
- a display unit for displaying the result of said arithmetic operation executed by said processor;
- wherein said processor executes the following processings for:
- detecting the display brightness in a certain window displayed on the screen of said display unit, and
- controlling said display unit so as to change the screen brightness of said display unit according to said detected display brightness in said window;
- and
- said display unit changes said screen brightness under the control of said processor.
3) A liquid crystal display unit, comprising:
- a liquid crystal display screen for displaying an image;
- a back-light for lighting said liquid crystal display screen;
- and
- a brightness controller for controlling the brightness of said back-light;
- wherein said brightness controller executes processings for:
- receiving a brightness control signal generated according to the display brightness in a specific area calculated from a draw signal in an image in said specific area, said image being selected from a plurality of images to be displayed in said liquid crystal display screen;
- and
- changing the brightness of said back-light according to said brightness control signal.
Dependencies are inferred from the claim text.