Patent ID: 7227541

Claim:
An image display apparatus comprising: image display means including scanning lines, modulation lines and display devices driven through said scanning lines and modulation lines; a scanning circuit for supplying a scanning signal to said scanning line; a modulation circuit for supplying a modulation signal to said modulation line; a converting circuit for converting the number of scanning lines of an input image signal; selecting means for selecting a scan method of any of a first scan method and a second scan method, the first scan method being adapted to simultaneously select a plurality of adjacent scanning lines during one selection period and select the same scanning line twice or more within one frame while a set of scanning lines to be simultaneously selected is changed, the second scan method being adapted to select one scanning line during one selection period and select the same scanning line only once within one frame; and changing means for changing a vertical scaling filter characteristic of said converting circuit in accordance with the selected scan method, wherein said vertical scaling filter characteristic in the case of said first scan method is a characteristic having a weaker elimination effect on high frequency components as compared with said vertical scaling filter characteristic in the case of said second scan method.