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High Definition Versus Standard Definition
What Is High Definition And How Is It Different From Standard Definition?
High Definition or "HD" is a technological leap forward from standard definition, with up to 6x the picture resolution, so that what you see is sharper and more realistic. Regular TVs and the TV channels you watch at home are typically in standard definition (unless you watch HD channels). DVD is also in standard definition. Standard definition (480i & 480p) is lower quality than high definition. Many older TV sets are standard def, and can only show standard def content (programming). Many new TVs are called High Definition TVs (HDTV). They are capable of showing high def content in: 720p, 1080i, and 1080p, all high definition formats, but 1080p provides the highest picture quality of them all.
A Quick Guide To TV Definition Terms
HDTV- (High Definition) television monitors reveal either 720 progressive (720p), or a minimum of 1080 interlaced lines, known as 1080i. An HDTV will show 540 lines at a time. These resolutions create extraordinarily sharp, lifelike images as well as the truest and most vivid colors ever seen on a television screen.
EDTV- stands for Enhanced Definition Television. EDTV monitors display at least 480 progressive lines (480p). Because EDTV shows more lines simultaneously than SDTV, its pictures are sharper, richer and more realistic.
SDTV - Standard Definition TV is what's rapidly becoming old-fashioned television. Although SDTV offers a decent picture we've grown accustomed to, it features up to 480 interlaced lines (480i), but can show only 240 of them at any given time. Although SDTV produces a sharp picture and good color, its performance is dramatically inferior to HDTV or EDTV.
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