Invention Grant
- Patent Title: Image processing circuit
- Patent Title (中): 图像处理电路
-
Application No.: US11425586Application Date: 2006-06-21
-
Publication No.: US07642999B2Publication Date: 2010-01-05
- Inventor: Hisaharu Oura
- Applicant: Hisaharu Oura
- Applicant Address: JP Tokyo
- Assignee: Mitsubishi Electric Corporation
- Current Assignee: Mitsubishi Electric Corporation
- Current Assignee Address: JP Tokyo
- Agency: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- Priority: JP2005-216749 20050727
- Main IPC: G09G3/36
- IPC: G09G3/36 ; G09G5/10

Abstract:
The present invention provides an image processing circuit capable of sufficiently correcting a temperature characteristic of a response speed, varying depending on gray-scale, of a liquid crystal display, while suppressing an increase in circuit scale. The present invention provides an image processing circuit for a liquid crystal display performing overdrive processing and the image processing circuit includes a overdrive LUT 1 for outputting an overdrive calculation value, based on image data of a previous frame and image data of a current frame, a plurality of temperature correction LUTs 2 each outputting a correction value for use in temperature correction of the overdrive calculation value, a temperature correction LUT selection circuit 3 for selecting one of the temperature correction LUTs 2 based on temperature data, and a correction calculation circuit 4 for calculating an overdrive output value based on the overdrive calculation value output from the overdrive LUT 1 and the correction value output from the temperature correction LUT 2 selected by the selection circuit 3.
Public/Granted literature
- US20070024563A1 IMAGE PROCESSING CIRCUIT Public/Granted day:2007-02-01
Information query
IPC分类: