Ultrahigh-definition TV: New Quad HD TV chip developed

It took only a few years for high-definition televisions to make the transition from high-priced novelty to ubiquitous commodity -- and they now seem to be heading for obsolescence just as quickly. Several manufacturers have recently debuted new ultrahigh-definition, or UHD, models (also known as 4K or Quad HD) with four times the resolution of today's HD TVs.

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