IMAGE DISPLAY APPARATUS AND IMAGE DISPLAY METHOD

摘要

An image display apparatus wherein a video signal is divided into a plurality of sub-fields weighted by time width or the number of pulses for each field. The plurality of sub-fields are temporally superimposed to be displayed, thereby performing a gray- scale display. The video signal of a current field is delayed by one field to be outputted as the video signal of the previous field. The inclination of the brightness of the image is determined based on the video signals of the current and previous fields. The difference between the video signals of the current and previous fields is calculated. A motion determining circuit calculates the image movement amount based on both the calculated difference and the determined inclination. An image data processing circuit suppresses the false contours of a moving image on the basis of the calculated image movement amount.