Patent ID: 8144172
Filing Date: 2012-03-27
Classification: G09G,H04N

Abstract:
1. A color temperature correcting device that corrects, in a display device that represents brightness of RGB (Red, Green and Blue) of a video signal using a plurality of levels of gray scales, a color temperature of the video signal, the color temperature correcting device comprising: a storing unit operable to store a gray scale value conversion table for an input gray scale value of a video signal to set gray scale values for respective RGB so that a consistent color temperature is maintained; and a gray scale value converting unit operable to convert the input gray scale value to set gray scale values based on the gray scale value conversion table, wherein the gray scale value conversion table includes: a first gray scale value conversion table indicating a relationship of ideal brightness values for the respective RGB to the input gray scale value of the video signal to maintain a consistent color temperature; and a second gray scale value conversion table indicating a relationship to set gray scale values at which the ideal brightness values are obtained.