DEVICE FOR AUTOMATICALLY CONTROLLING LCD SCREEN BRIGHTNESS AND METHOD THEREFOR, CONCERNED WITH MAINTAINING OPTIMAL LCD SCREEN BRIGHTNESS STATE BY USING HISTOGRAM ANALYSIS FOR IMAGE DATA ON SUBJECT PHOTOGRAPHED BY CAMERA

摘要

PURPOSE: A device for automatically controlling LCD screen brightness is provided to perceive a brightness state through a histogram analysis for image data on a subject inputted from a camera, and to automatically control the brightness of an LCD screen, thereby maintaining an optimal LCD screen brightness state. CONSTITUTION: An image detector/image processor(110) detects image data of a terminal camera, and processes detected image information. A histogram processor(100) detects brightness information per pixel according to peripheral brightness of a subject to be pictured, and automatically controls brightness shown on an LCD screen of a terminal. The histogram processor(100) comprises as follows. A pixel information detector(101) receives the brightness information. A pixel information processor(102) processes distributions of the number of pixels detected by the pixel information processor(102). An LCD brightness controller(103) controls a register value of an LED, and controls the brightness of the LCD screen.