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Advantages of HDTV expressed in non-technical terms

High-definition television (HDTV) yields a better-quality image than standard television does, because it has a greater number of lines of resolution. The visual information is some 2-5 times sharper because the gaps between the scan lines are narrower or invisible to the naked eye. The larger the size of the television the HD picture is viewed on, the greater the improvement in picture quality. On some smaller televisions there may be no noticeable improvement in picture quality.

The lower-case "i" appended to the numbers denotes interlaced; the lower-case "p" denotes progressive. With the interlaced scanning method, the 1,080 lines of resolution are divided into pairs. The first 540 alternate lines are painted on a frame and then the second 540 lines are painted on a second frame. The progressive scanning method simultaneously displays all 1,080 lines on every frame, requiring a greater bandwidth.

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