公开(公告)号：KR1020080017794A

公开(公告)日：2008-02-27

申请号：KR1020060079439

申请日：2006-08-22

Applicant: 삼성전자주식회사

Inventor： 박지용 ,  임상균 ,  조명진 ,  아누프리엔코,알렉산더

IPC: H04N5/57

CPC classification number: G09G3/20 ,  G09G2320/0233 ,  G09G2320/0271 ,  G09G2320/0626 ,  G09G2360/16 ,  H04N5/20 ,  H04N17/04

Abstract: A display device and its control method are provided to prevent a loss of a contrast ratio by increasing an output luminance level such that a maximum luminance level of each display region becomes an available luminance level. A display unit(30) has a plurality of divided display regions. A signal processing unit(20) processes an inputted image signal. A controller(40) detects output luminance levels, which are represented correspondingly according to gray scale levels of the image signal, of the plurality of display regions, calculates a correction coefficient allowing a maximum luminance level of the detected output luminance levels to reach an available luminance level that can be displayed to its maximum level on the display unit, converts the output luminance level, compares the converted output luminance level with a certain reference luminance level, and sets a correction table.

Abstract translation: 提供一种显示装置及其控制方法，用于通过增加每个显示区域的最大亮度级别变为可用亮度级别的输出亮度级别来防止造成对比度的损失。 显示单元（30）具有多个划分的显示区域。 信号处理单元（20）处理输入的图像信号。 控制器（40）根据多个显示区域的图像信号的灰度级别来检测相应地表示的输出亮度水平，计算出允许所检测的输出亮度水平的最大亮度水平达到可用的校正系数 可以在显示单元上显示为其最大电平的亮度级别，转换输出亮度级别，将转换的输出亮度级别与某个参考亮度级别进行比较，并设置校正表。