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progressive scan

J

JSang

Senior member
i know sort of how this works but i was wondering why some dvd players have "true" progressive scan, refering to advantages over other progressive scan dvd players.
what does this mean in terms of the "fake"(?) progressive scan dvd players? what is the difference?
and while ure at it explain what exactly progressive scan does anyways. the dvdtalk posts on this question are wayyyy too complicated for a newbie to understand.
thanks
 
Never really heard of "fake" progressive scan. However, progressive scan is basically a video in which a full image is drawn every frame (in the case of DVD's, 24 frames every second). Normal interlaced video (which DVD's come in) only draw half an image every frame (odd lines or even lines) and go at 29.97 frames every second for NTSC (US). One of the problems with this is that when you're merely drawing half and image every frame, the image is not as clear and there is some flickering in the video. Progressive scan offers a much smoother video and clearer images. Normal TV's (ones that aren't HDTV's) can only handle interlaced 480i (480 lines per image) video. You would need at least a component input (three plugs, red green and blue I think) from your DVD player to the TV in order to get progressive video. S-Video just won't cut it.
Btw, does anyone know exactly how high and image component video can handle? 720p? 1080i?
 
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