As the technology implies, HDTV gives better screen resolution. The obvious feature of HDTV is the physical wide screen. An HDTV screen has more vertical and horizontal lines than an analog TV, giving it a much finer and crisper display. Because the screen format is wide, it can display a wider picture similar to that of a movie theater's screen. One of the basic improvements with HDTV is the way it is transmitted.
Digital transmissions can deliver a perfect signal, free of ghosts, interference and picture noise.
You will be able to watch HDTV broadcast programs by using a special decoder. Most boxes provide many different solutions for great images and sound using equipment that you may already own. These boxes decode and output HDTV broadcasts with Dolby Digital Audio for a more convincing, realistic ambience. The style of antenna that you will need for optimal reception may vary depending on your geographic location and distance to the transmission source. By the time you read this, HDTV televisions should be on the market.