What is 480i?
'''480i''' is a shorthand name of a video mode, to be specific, either US [[NTSC]] [[television]] [[Broadcast television systems|system]] or [[digital television]] systems with the same characteristics. The number 480 means there are 480 lines that contain picture information, while the NTSC actually has a total of 525 lines, only 483 of them are used to display the image for [[Digital video|DV]]-NTSC. The [[Digital television|digitally transmitted]] horizontal resolution is often 720 samples (including 16 samples for both horizontal sync and horizontal blanking) or 704 visible [[pixel]]s that has an [[Aspect ratio (image)|aspect ratio]] of 4:3 (with vertically rectangular pixels) which means a display resolution of 640 × 480 ([[Video Graphics Array|VGA]]); that is [[standard-definition television]] (shortened as SDTV) with a 4:3 aspect ratio (with square pixels).<ref>{{cite web|url=http://www.rpsoft2000.com/information/hdtv.htm|access-date=2014-07-26|title=Some Explanation of HDTV Terms for U.S. type Television Systems|publisher=rpsoft 2000}}</ref> ==References== {{reflist}} {{TV-stub}} [[Category:Television technology]]