Most HD TVs today are available in 1080p HD resolution, while those that are HD-ready are often able to display 720p HD. Each separate HD resolution is often natively supported on the HDTV, which means that it will display all content in the screen’s native resolution. It also means that any content in any other native resolution will either be up-scaled, increased or downscaled to fit to the HD TV’s native resolution.
1080i interlaced HD sources are displayed on the HD TV in a stitched or laced fashion, meaning that the HD content’s odd-numbered lines of resolution will appear on your screen first, then the HD even-numbered lines will come after. This all happens within a fraction of a second, and though your eyes may not perceive it, HD interlaced scanning playback removes the flicker element from content. Interlaced scanning has been used in broadcasting for a long time dating back to the early days of TV. It was commonplace in most standard definition and older HD television sets.
Progressive scanning has been used on most computers and digital electronics and was made very popular by DVD players. Progressive scanning has also being employed in a number of HD TVs and is quite commonplace today with most HD TV native resolutions that use either 720p or 1080p. Progressive scanning formats, which include the 480p, 720p, and 1080p picture resolutions, are able to render all of the lines that make up a picture in succession in a single pass, similar to a paint brush brushing across the screen. This type of scanning format makes the HD picture and content in general a lot smoother and provides a more precise representation of the image, especially when displaying motion-based content such as sports and action films
When it comes to selecting the right HD TV, these are some factors to consider. Other important points that can affect the overall resolution include the color settings and backlighting technology. This is essentially true when comparing various HD TV types like plasmas and LCD based HD TV. Though screen sizes may vary, because 720p and 1080p HD TV resolutions are native, the larger screen size doesn’t really make much difference in terms of picture quality, though the larger screen does expand the viewing space.
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