It sounds like something straight out of Back to the Future, but 3D televisions that don't require special glasses may be coming to a living room near you soon. The Philips 56-inch HD 3D display has a viewing angle of 160 degrees and a 3840x2160 resolution, four times the number of pixels in the highest HDTV standard. There are catches: the set is currently only commercially available and very few television programs have been shot in 3D so you may have to wait awhile to watch the big game on it. Phlips
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