What is HDTV? many people may know that it means high definition, but there are several variations of HDTV and several very important terms that you should know. First off, TV sets currently come in 5 major resolutions, 480i, 480p, 720p, 1080i, and 1080p. These resolutions are in order from lowest quality to highest quality. The i and p at the end of the resolution stand for Interlaced and Progressive. They both describe how often the picture is updated, where i updates half of the picture every 60th of a second and p updates the full picture ever 60th of a second. This means that p will create a smoother picture and less flicker. HD starts at 720p. An interesting fact about this is that there is no 720i because it is not permitted by broadcasting companies. Next, you may be wondering what the numbers represent. They represent the vertical amount of pixels. Finally HD is also widescreen, so more like original movie recordings.
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