Communication | What Is High Definition Television?
What is high definition television?
High Definition Television (HDTV) is a new form of television that has a much higher quality image than standard television. While HDTV has received wide publicity in recent years, it is still in the experimental phase and is not yet commercially available.
The amount of detail shown in a television picture is determined by the number of lines of information and by the number of picture elements on each line. The latter is mostly determined by the width of the electron (negatively charged particle) beam that scans and reproduces images. To obtain a picture closer to that seen in movie theaters, HDTV uses more than twice the number of scan lines, with a much smaller picture element than standard television. In the United States and Japan, standard television has 525 scanning lines, and in Europe it has 625 scanning lines. HDTV uses more than 1,000 lines.
HDTV not only...
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