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What is the difference between DTV and HDTV?

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What is the difference between DTV and HDTV?

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HDTV (high-definition television) is the highest-quality format of DTV (digital television), providing the best possible picture and sound. However, the superior picture and sound of HD (high-definition) programs can only be experienced on a high-definition TV set. HD cannot be fully utilized with older analog televisions. Although all digital signals provide a picture free of some of the problems inherent in analog broadcast (static and ghosting), HD is defined as a digital signal that is of relatively high resolution—technically at least 720 lines of vertical resolution. Only newer TVs labeled HDTV are capable of fully displaying this higher resolution. (For definitions of other DTV-related terms, please see our glossary.) If you have purchased a DTV converter box, it will receive the HDTV channels currently being broadcast and convert them to a lower resolution so that they can be displayed on your older analog TV.

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