Constant-height display systems adjust a front-projected image so that no resolution is wasted on creating black bars above and below the picture when showing super-widescreen movies. For instance, when you go from watching an HDTV program with a 16:9 aspect ratio to a movie with a 2.35:1 ratio, the system fills the entire screen instead of adding bars to compensate for the wider image. To do this, it has to maintain a constant image height — and thus, its somewhat unwieldy name.
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zargon @ Aug 29th 2008 4:07PM
Constant-height display systems adjust a front-projected image so that no resolution is wasted on creating black bars above and below the picture when showing super-widescreen movies. For instance, when you go from watching an HDTV program with a 16:9 aspect ratio to a movie with a 2.35:1 ratio, the system fills the entire screen instead of adding bars to compensate for the wider image. To do this, it has to maintain a constant image height — and thus, its somewhat unwieldy name.