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Is HD and Digital TV the same?


All HDTV is digital, but not all Digital TV is HDTV. High Definition refers to the resolution of the video (720p, 1080i or 1080p). Digital TV means that the off-air signals are transmitted digitally (usually in ATSC) versus the older analog signals (NTSC). Digital TV broadcasts can be a mixture of standard definition and high definition programs.

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