| 摘要 |
An image display apparatus divides one field into plural weighted subfields and combines the plural subfields to perform a multi-gray-scale image display on a display panel. The image display apparatus includes a motion amount detecting circuit 50, a diffusion amount calculating circuit 52, and a diffusion circuit 53. The motion amount detecting circuit 50 detects a motion amount from a current field and a field before the current field based on an input image signal. The diffusion amount calculating circuit 52 calculates a diffusion amount to diffuse false contour noise to the surrounding, based on a gray scale of the input image signal and the detected motion amount. The diffusion circuit 53 performs a diffuse process in the calculated diffusion amount. With this arrangement, it is possible to improve the image quality of a moving-image display, by decreasing a false contour, without generating additional noise and without increasing the circuit scale.
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