APPARATUS AND A METHOD FOR CONTROLLING AN LCD BACKLIGHT AND PROCESSING IMAGE SIGNAL TO REDUCE POWER CONSUMPTION WITHOUT LOWERING OF BRIGHTNESS AND CONTRAST OF IMAGE

摘要

PURPOSE: An apparatus and a method for controlling an LCD(Liquid Crystal Display) backlight and processing image signal are provided to make it possible to reduce the power consumption of an end user terminal having an LCD panel without lowering of brightness and contrast of image, by adapting brightness and contrast of the image signal based on the adjusted backlight intensity information. CONSTITUTION: An apparatus for controlling an LCD backlight and processing image signal comprises the first unit for generating backlight intensity information and the second unit(100) for controlling brightness and contrast of an image signal. The first unit generates backlight intensity information, adjusted for reducing the power consumption of an end user terminal having an LCD panel. The second unit adapts brightness and contrast of the image signal based on the adjusted backlight intensity information and displays the adapted image signal on the LCD. The apparatus makes a user experience image display with undamaged quality by adapting brightness or contrast of the image signal into high-level based on the adjusted backlight intensity information, and simultaneously, reduces the power consumption of the end user terminal.