| 摘要 |
PROBLEM TO BE SOLVED: To provide a multi-screen display device capable of uniformizing the color balance of plural displays while deciding objective color balance easily and its color balance control method. SOLUTION: When the color temperature data Td1 wanted to be displayed on displays are instructed from the outside, a microcomputer for control 4 calculates one of the difference between color data Tp1 and the color data Td1 or the ratio of them or the like and a PDP module 2 outputs a control signal Sc for correcting color data to be used from the color data Tp1 to the color data Td1 to a correction value generating part 5 based on the calculated result and the part 5 generates RGB correction values Sts based on the control signal Sc to output them to a multiplication part 7. Analog RGB video signals are converted into digital signals by an A/D conversion part 6 to be outputted to the multiplication part 7. The part 7 performs the multiplication among the digitized RGB video signals and the RGB correction values Sts.
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