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HDTV
HDTV is High Definition Television. HDTV refers to any
TV set capable of enhanced resolutions.
Despite the myriad of display technologies that
encompass HDTV, there are really two basic types of
display - those that present direct pixels and those
that present scan lines.
Scan lines are reserved for CRT technology that presents
the picture as a series of lines. Regular NTSC has 480
active scan lines displayed in an interlaced fashion,
480i. HDTV can enhance 480i by making it 480P
(progressive scan). HDTV goes up to 720P and then 1080i.
Fixed pixel is a display type with resolutions measured
like a computer monitor. A high-resolution TV with fixed
pixel display might be 1024x768. The fixed pixel display
doesn't have lines scanned by an electron beam, but
rather a grid of separate dots that can be colored
according to the source video signal. It's a different
method of displaying video but isn't necessarily
superior to scan lines.
If you're looking for a new TV with a picture larger
than 32", you should be looking into your widescreen
HDTV options. |
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