High Definition Video
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HDTV or high definition television normally refers to any video system of higher resolution than the standard definition.
The original HD specifications date back to the early 1980s, when Japan first experimented with a 1025 line television standard.
Japan presented their parameters at an international meeting of television engineers in Algiers in 1981 and Japan’s NHK presented their analog HDTV system at a Swiss conference in 1983. Except for these early formats, HDTV is digital broadcast and therefore it’s introduction will sometimes conincide with the introduction of DTV, or digital television.
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