Abstract: The invention concerns an image display apparatus having a non-interlaced display screen having a first number of display lines, to which an interlaced video signal (RGB-1) having a second number of video lines per field is applied, whereby the first number exceeds the second number but falls below twice the second number. A first line memory device (F1) is used for doubling the line number of the video signal (RGB-1). Second (F2) and third (F3) line memory devices each receive video lines of the line number doubled video signal, and provide a pair of video lines (RGB*, RGB**) at a reduced rate corresponding to the first number of display lines. An interpolator (7) provides the first number of display lines (RGB-2) to the display in response to the pair of video lines (RGB*, RGB**) received from the second (F2) and third (F3) line memory devices.