Invention Grant
- Patent Title: Liquid crystal display device control circuit and liquid crystal display system, which adjust brightness of display image by using height distribution of gradations of input image
- Patent Title (中): 液晶显示装置控制电路和液晶显示系统，通过使用输入图像灰度的高度分布来调整显示图像的亮度
-
Application No.: US12476444Application Date: 2009-06-02
-
Publication No.: US08593391B2Publication Date: 2013-11-26
- Inventor: Tomokazu Okada , Yasunobu Inoue , Yasuhito Sugimoto
- Applicant: Tomokazu Okada , Yasunobu Inoue , Yasuhito Sugimoto
- Applicant Address: JP Kyoto
- Assignee: Rohm Co., Ltd.
- Current Assignee: Rohm Co., Ltd.
- Current Assignee Address: JP Kyoto
- Agency: Fish & Richardson P.C.
- Priority: JP2008-146177 20080603
- Main IPC: G09G3/36
- IPC: G09G3/36 ; G09G5/00
Abstract:
A liquid crystal display control circuit includes a current reduction rate setting circuit analyzes original gradations of pixels in an input image signal and sets a current reduction rate; a light emitting element control circuit adjusts a drive current of the light emitting element in response to the current reduction rate; a gradation changing circuit generates a display image signal in which the original gradations are changed to the display gradations; and a liquid crystal panel control circuit sets a transmittance of the liquid crystal panel in response to the display gradations of pixels included in the image display signal.
Public/Granted literature
Information query
IPC分类:
