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HDTV stands for High Definition Television, and if you live in the USA, Australia, or
Japan you may already have experienced it. There are three key differences between
HDTV and what’s become known as standard definition TV ie regular NTSC, PAL or
SECAM. The three differences are; an increase in picture resolution, 16:9 widescreen
as standard, and the ability to support multi-channel audio such as Dolby Digital.
The most important aspect of HDTV, and the one which gives it its name is the
increased resolution. Standard definition NTSC broadcasts have 525 horizontal
lines, and PAL broadcasts are slightly better at 625 lines. In both these systems
however, the actual number of lines used to display the picture, known as
Get The Most Out Of Your Home Theater With Dish Network HDTV ...installed and you will be able to ask all your questions before the installer leaves. Because the system set-up is quite intuitive, you will be sitting back and enjoying your favorite shows in no time. And, with features that include ...
the active
lines, is fewer than that. In addition, both PAL and NTSC systems are interlaced, that
is, each frame is spit into two fields, one field is the odd-numbered lines and the
other is the even lines. Each frame is displayed alternately and our brain puts them
together to create a complete image of each frame. This has an adverse affect on
picture quality.
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