Originally posted by Quinton: Do line doublers improve the picture clarity or just get rid of scan lines?Or do they accomplish both? Thanks.
It depends . . . (nice lawyer answer)
It depends on the quality of the line doubler and what you mean by "improve picture clarity".
A "line doubler" (or better termed "deinterlacer") in a progressive DVD player that does 3:2 pull down definitely improves picture clarity by matching up the proper interlace fields from the same frame as showing them as a full 480p frame.
An interpolating "line doubler" doesn't really add new information, but it does interpolate between lines to improve the image.
A "dumb" line doubler just doubles the lines and really doesnt improve clarity but does get ride of the scan line flicker.
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