| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a color display apparatus for correctly measuring an actual state of deterioration in a display screen so as to correct the white balance with high accuracy. <P>SOLUTION: A measuring display section 3 having a drive circuit 19 manufactured by the same process as that of an image display section 1 and having the same structure as that of the image display section 1 and the same configuration as that of a circuit 20 displays an image with an average lightness of the display screen of the image display section 1. A CPU 21 outputs a second level control signal VCT 1 and an address signal VA for a correction period, and a switching circuit 18 selects a test pattern signal V 16 (R, G, B) providing one measuring fixed image stored in a circuit 16, resulting that the measuring display section 3 displays a test pattern. The CPU 21 acquires a lightness signal V5 (R, G, B) measured by an optical sensor 5 and calculates data for input output characteristics of the display section 3 to produce conversion table data VCT 2 and provide an output. <P>COPYRIGHT: (C)2004,JPO |
