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525/60 Last modified: Tuesday, February 27, 2007
The term 525/60 refers to the analog TV system NTSC used for years in the United States. NTSC is a system of 525 scanning lines (presented as 240 scan lines (a field), interlaced, displaying 480 total lines of visible picture (a frame), at 60 hertz. This 60 hertz scanning rate results in a full frame every 1/30 of second. The 45 scanning lines not displayed is known as the VBI (vertical blanking interval), which contains certain signals that control the TV's scanning system and other functions.   See also HDTV. Also see Webopedia's "Did You Know...All About Digital TV . DTV and HDTV".
Digital Content Producer Magazine Film & video production in a multi-platform world. Home Theater Magazine Featuring news, spotlights, product descriptions and reviews of today's Home Theater equipment.	Related Categories Digital Television Home Entertainment Video Related Terms 1080i 1080p 4:1:1 analog television analog-to-digital converter digital digital video frame frames per second HD-DVD HDTV HDTV-ready interlaced scan progressive scan