Patent ID: 9202435
Filing Date: 2015-12-01
Classification: G09G,H04N

Abstract:
1. A correction device for a display device, comprising: a detector configured to measure an image displayed in the display device so as to detect measured XYZ values representing tristimulus values of a CIE1931 color system; a first convertor configured to calculate measured X10Y10Z10 values of a CIE1964 color system based on the measured XYZ values of the CIE1931 color system by use of a first conversion characteristic with reference to characteristics of the display device; a second convertor configured to calculate target X10Y10Z10 values of the CIE1964 color system based on target XYZ values representing tristimulus values of a target color in the CIE1931 color system by use of a second conversion characteristic different from the first conversion characteristic; a correction value calculator configured to compare the measured X10Y10Z10 values with the target X10Y10Z10 values so as to produce a correction value having the measured X10Y10Z10 values matched with the target X10Y10Z10 values; a correction value calibrator configured to rewrite the correction value of the CIE1964 color system, suiting to the characteristics of the display device, with a correction value of the CIE1931 color system; and a compensator configured to carry out a color correction on the display device in accordance with the rewritten correction value of the CIE1931 color system, wherein the X10Y10Z10 values of the CIE1964 color system exhibit visual characteristics different from an observatory sight defined by the XYZ values of the CIE1931 color system, and wherein the target XYZ values of the CIE1931 color system represent a chromaticity of a white color and primary colors as well as a gradation luminous characteristic.