1080p Full HD TV Defined
February 23, 2010 – 10:36 amThere are many names for Full High Definition Television. The term has been shortened to Full HD TV and given other more catchy names such as True HDTV and Ultra HD. Another more technical term for it is 1080p. Don’t be mistaken they all mean the same thing, this type of television is basically conforms to the 1080p standard. This means it has a resolution of 1920 x 1080 pixels and employs the progressive method of scanning indicated by the letter ‘p’ after the 1080.
So what is the significance this type of TV and why TVs that conform to this standard superior to other televisions. Basically it is down to two particular aspects of HD TV – resolution and scanning method.
The first is easy to explain – resolution. The resolution is basically the number of dots or pixels that make up the images displayed on screen. It is represented in a format which is the number of horizontal pixels x vertical pixels. In the case of full HD TV this is 1920 x 1080. This resolution is shortened to just 1080 in reference to the number of lines. This is the highest number of pixels available for mainstream high definition televisions today.
Television channels broadcast their programs in resolutions up to this particular resolution. The alternative to this is televisions with 720 lines, which obviously means that there are fewer lines of pixels and therefore televisions that solely use this standard are not capable of producing as high resolutions as 1080 televisions.
Secondly the scanning method is little more difficult to explain. Now that you know the images on screen are made up of lines of pixels, imagine that as the images displayed on the television change these pixels must be redrawn. There are two similar methods that are used to do this they are called interlaced scanning and progressive scanning. Basically with interlaced scanning alternate lines of pixels are refreshed for each frame, so to refresh all lines of pixels two frames must pass. With progressive scanning every line is refreshed for every frame. The resulting effect of this is that progressive scanning produces smoother images on screen, this especially noticeable when used on large displays with fast moving action.
Knowing this it should now be a little easier to see the benefits that owning an LCD Full HD TV has over other lesser televisions sets.
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