What is progressive scan on a DVD Does it make any difference weather your DVD player has it or not?

Progressive scan provides a more film-like image display that is more pleasing for viewing DVDs on a television display. Video signals are generated using horizontal lines. An regular, or interlaced, picture draws every other line and alternates between drawing odd lines and even lines. A progressive scan picture draws every line in sequence. Therefore, a progressive scan video signal sends twice as much data than an interlaced signal each time it draws an image on the screen. This basically means that if you have a TV that can display more than just the standard resolution you will get twice the picture clarity.