公开(公告)号：US20080309610A1

公开(公告)日：2008-12-18

申请号：US12137707

申请日：2008-06-12

申请人： Tomonori Yoshida ,  Yoshinori Wanaka ,  Kunihiko Miki

发明人： Tomonori Yoshida ,  Yoshinori Wanaka ,  Kunihiko Miki

IPC分类号： G09G3/36

CPC分类号： G09G3/3406 ,  G09G2320/0261 ,  G09G2320/0626 ,  G09G2320/0673 ,  G09G2320/10 ,  G09G2360/16

摘要： An image display device has: a display 4 for displaying a video image; a backlight 3 for illuminating the display 4; a level detector 6 for detecting level of a video signal; a video signal adjuster 5 for adjusting a video signal to a signal of a level adapted to be displayed by the display 4; and a microcomputer 1, based on a signal from the level detector 6, for decreasing illuminance of the backlight 3 when the level of the video signal is low and increasing illuminance of the backlight 3 when the level of the video signal is high. The microcomputer 1 has a timer function and has a correcting function, when the low level of the video signal detected by the level detector 6 continues more than predetermined time, for increasing one of the level of the video signal and a brightness level of the display 4 by controlling the video signal adjuster 5.

摘要翻译： 图像显示装置具有：用于显示视频图像的显示器4; 用于照亮显示器4的背光3; 用于检测视频信号的电平的电平检测器6; 视频信号调节器5，用于将视频信号调整到适于由显示器4显示的电平的信号; 以及基于来自电平检测器6的信号的微型计算机1，用于当视频信号的电平低时降低背光3的照度，并且当视频信号的电平高时增加背光3的照度。 微型计算机1具有定时器功能，并且具有校正功能，当电平检测器6检测到的视频信号的低电平持续超过预定时间时，用于增加视频信号的电平和显示器的亮度级中的一个 控制视频信号调节器5。