comcast HDTV

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HDTV stands for high-definition television. HDTV is needed before the education effort, it has ATSC and QAM digital television tuners (along with its NTSC tuner).

HDTV Truth:

Advantages of HDTV expressed in non-engineering terms

• All commercial HD is digital, so the signal will either deliver an excellent picture, a picture with noticeable pixelation, a series of still pictures, or no picture at all. You would never get a snowy or washed out image from a weak signal, effects from signal interference, such as herringbone patterns, or vertical rolling.
• Most HD programming and films will be presented in the 16x9 proportioned, semi-widescreen format (though some films created in even wider ratios will still display "letterbox" bars on the top and bottom of even 16:9 sets.) Older films and programming that retain their 4:3 ratio display will be presented in a version of letterbox commonly called "pillar box", displaying bars on the right and left of 16:9 sets (rendering the term "fullscreen" a misnomer). Or, one can usually choose to enlarge the image to fill the screen, however this option will display a distorted, stretched-out picture.
• The colors will generally look more realistic, due to their greater bandwidth.
• The visual information is about 2-5 times more detailed overall. The gaps between scanning lines are smaller or invisible. Legacy TV content that was shot and preserved on 35mm film can now be viewed at nearly the same resolution as that at which it was originally photographed.
• Two new pre-recorded disc formats will be available in spring 2006. One is called HD DVD, while the other is Blu-ray. Both systems will usually play current DVDs, and attempt to extract a near-HDTV-quality image from them, but they are not compatible with each other.
• The increased clarity and detail make larger screen sizes more comfortable and pleasing to watch.
• Dolby Digital 5.1 sound is broadcast along with standard HDTV video signals allowing full surround sound capabilities. (standard television signals broadcast basic stereo audio signals)
  

Support amongst film studios has also been divided between the two formats. Some studios, such as Fox, New Line, Paramount and Warner have announced that they will release titles on both formats and allow the public to voice their preferences.

Others, such as Buena Vista, Lions Gate, MGM and Sony will support Blu-ray only (MGM is part-owned by Sony). Universal have currently announced they will support just HD-DVD. Often, an important factor in format wars such as this is the acceptance of a format by Pornography studios. They have been instrumental in popularising video streaming over the internet as well as aiding VHS in the previous format war against Betamax. At this early stage, they have been equally mixed in their support.

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