| 摘要 |
A display apparatus using a subfield drive system suppresses pseudo-contours in moving pictures by identifying areas with smoothly varying gradation values, determining the minimum and maximum gradation values in each such area, and processing the area so that all gradations in the range from the minimum gradation value to the maximum gradation value can be displayed without altering the states of any subfields having durations longer than a predetermined duration. This is accomplished by selecting a subfield sequence free of such state alterations and using the selected subfield sequence to display the area, or by modifying the gradation values in the area so as to avoid gradations at which such state alterations occur. <IMAGE> |
