| 摘要 |
PROBLEM TO BE SOLVED: To improve dynamic image display quality by improving a response characteristic of a liquid crystal. SOLUTION: While image data are written into either one of first, second, third frame memories 1, 2 and 3, image data are repetitively read two times from the remaining two memories in one vertical synchronization interval and transferred to an arithmetic unit 4, and this operation is executed with the frame memories changed sequentially. The arithmetic unit 4 refers to a look-up table on the basis of two inputted data values and when the data value of the current image signal is greater than the data value of the previous image signal, transfers image data of a value greater than the data value of the current image signal to a liquid crystal display device 5. Thus, the step response characteristic is improved for the improvement of the dynamic image display quality by repetitively inputting image data of a value greater than a target data value two times in the liquid crystal display device 5 in one vertical synchronization interval when the image signal to be inputted in the arithmetic unit 4 changes from small image data to great image data. COPYRIGHT: (C)2005,JPO&NCIPI
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