One of the major things that confuses people about high definition television is the difference between it and standard definition television. In fact many people aren't aware that there is a difference between standard definition and high definition television. In fact there are several differences between these two distinct television formats. First off, standard definition television is the same kind of television that has been around for decades. It's distinguished from high definition television by its nearly square 4:3 aspect ratio screen, and a picture that has four hundred and eighty horizontal lines of resolution scanned onto the screen in an interlacing pattern (in an interlacing pattern, the lines are scanned onto the screen in two parts in quick succession that provide the impression of a complete picture). Standard definition television programming can be delivered either in an analog or digital signal. Which one it's delivered in will starkly effect the appearance of the picture, but by definition both are standard definition television.
High definition television is different because it features a 16:9 aspect ratio screen which is more rectangular than the 4:3 screen with a width almost twice its height. High definition television also features a much higher resolution picture with seven hundred and twenty horizontal lines of resolution scanned on in a progressive pattern (all in one pass) or one thousand and eighty lines of resolution scanned on in an interlacing pattern. In either resolution, high definition television has a much more detailed picture that what's available from standard definition television. High definition television also uses Dolby Digital 5.1 Surround Sound as its native sound format. When properly executed, Dolby Digital 5.1 Surround Sound completes the audience's impression of being drawn into whatever is happening on screen. High definition television is always in digital format.
All of these differences between high definition television and the normal standard definition television formats mean that in order to truly enjoy high definition television, you need special high definition television programming and a special high definition receiver to decode it. The good news is that both of these necessities are available from Dish Network. In fact when you subscribe to a high definition television programming package, Dish Network will throw in a high definition satellite receiver at no extra cost to you.
Even though high definition television programming is still in its infancy in many ways, Dish Network does a good job of providing a wide variety of high definition television channels which cover a wide range of subject matters and types of entertainment. Sports and movies are what most people think of when they think about watching things in high definition. Movies are a good choice because they're filmed in 16:9 wide screen and have high resolution pictures. Both of these attributes make the job of remastering them to meet the high standards of the high def format easy compared to many other kinds of programming. Sports has to be deliberately produced in the high def format, but because of the extra detail in the picture and the added viewing area, it's considered to be worth it in many ways.
HDTV promises to be the future format of television and Dish Network apparently is doing its part to bring that format into common use now.
