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What exactly is HDTV?

April 26, 2017hdtv

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What exactly is HDTV?

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Several types of televisions can be considered high definition. In general, HDTVs are set apart from standard-definition (SD) TVs by their high display resolutions and wide aspect ratios or rectangular displays. HDTVs come in display resolutions of 720p (720 lines of detail) or 1080i (1,080 lines of detail). A standard TV has 480. The “p” refers to progressive scan, in which each of the picture frames that appear are drawn line by line from top to bottom on the screen, causing on-screen action to appear smoother. The “I” stands for interlaced, meaning that every second line of a picture is drawn in sequence. HDTVs that display 1080p content are relatively new to the HD world, though they’re said to be the best for TV viewing, since they combine the smooth image of progressive scan and sharpness of 1,080 lines of resolution. Movies, commercials and TV shows filmed in HD have a wider aspect ratio (the ratio of a screen’s height to its width) than their SD counterparts. HD display width d