National Television System Committee (NTSC)
National Television System Committee (NTSC) – a) The organization that formulated the “NTSC” system. Usually taken to mean the NTSC color television system itself, or its interconnect standards. NTSC is the television standard currently in use in the U.S., Canada and Japan. NTSC image format is 4:3 aspect ratio, 525 lines, 60 Hz and 4 MHz video bandwidth with a total 6 MHz of video channel width. NTSC uses YIQ. NTSC-1 was set in 1948. It increased the number of scanning lines from 441 to 525, and replaced AM sound with FM. b) The name of two standardization groups, the first of which established the 525 scanning-line-per-frame/30 frameper-second standard and the second of which established the color television system currently used in the U.S., also the common name of the NTSC-established color system. NTSC is used throughout North America and Central America, except for the French islands of St. Pierre and Miquelon. It is also used in most of the Caribbean and in parts of South America, Asia, and the Pacific. It is also broadcast at U.S. military installations throughout the world and at some oil facilities in the Middle East. Barbados was the only country in the world to transmit NTSC color on a non-525-line system, they have since switched to 525 lines. Brazil remains the only 525-line country to transmit color TV that is not NTSC, their system is called PAL-M. M is the CCIR designation for 525-line/30 frame television. See also M.
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