Mike, I'll take a shot at it. All present N.American DVDs and standard definition TV are 480i. If a display device(set or projector)has a "native resolution" of e.g. 720p, then it has to display at 720p to show a full picture, regardless of what the original source material was. The term for changing from interlaced to progressive is "deinterlacing", and "converting" shouldn't be used. The term for mathematically interpolating more pixels(e.g. to get from 480 to 720)to fill the picture is "scaling", and again, "conversion" shouldn't be used. The quality of deinterlacing and scaling may or may not be better in a player or receiver than what a TV set or projector would do itself. In any case, this doesn't really "convert" the lower definition DVD or SDTV into high definition, although if the equipment is good it can look pretty good.
