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Dish Network Articles: The basics of satellite HDTV

How does HDTV provide a better viewing quality?

Many think HDTV just increasing the definition per unit area. But in fact, what HDTV does is quite the opposite of what many imagine. Fundamentally, HDTV is actually not to increase the definition per unit area, but rather to increase the percentage of the visual field contained by the image.

How does HD technology works?

The majority of proposed analog and digital HDTV systems are working toward approximately a 100% increase in the number of horizontal and vertical pixels. Most probably the pixel will goes up to 1 Mb/frame with 1000 lines by 1000 horizontal points. This naturally results in a factor of 2-3 improvement in the angle of the vertical and horizontal fields. The majority of HDTV proposals also changes the aspect ratio to 16/9 from 4/3 -- making the image more "movie-like"” and provides better amusement experience to the viewer.

Here are some conventional analog HDTV proposals in comparison with existing TV systems.

HDTV deg 8 USA
Total actives lines = 1050 (960V x 675H), Asp. Ratio = 16/9

HDTV deg 9 Europe
Total actives lines = 1250 (1000V x 700H), Asp. Ratio = 16/9

HDTV deg 20 NHK
Total actives lines = 1125 (1080V x 540H), Asp. Ratio = 16/9

If you are living in United States and are interested in HDTV services, Dish Network and DirecTV HD services might be something that you do not want to miss out. Currently Dish Network is offering up to 7 full HD channels; while DirecTV has HD channels. If you would like to subsribe to HD services, we recommend Dish Network to go for because they are now offering free HD systems for all the first time customers. To order from the official dealer, click here.

If you would like to go for DirecTV HD services, Rapid Satellite for DirecTV HD services is our choice.

To read more about HDTV, we suggest these site(s):

How HDTV works?

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About the author:

Claudia Walters, expert writter on consumer products reviews. Check out his latest satellite TV related website and get recommendations on DirecTV or Dish Network dealers, <a href="http://www.sunsatellites.com/dishnetwork/directtv.html">compare Dish Network with DirecTV's</a> and other issues on <a href="http://www.sunsatellites.com">satellite TV deals</a>

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