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NTSC NTSC is the analog television system used in most of North America, South America, Japan, South Korea, Taiwan, Burma, and some Pacific island nations and territories. The NTSC standard has the advantage of simplicity but there are several major drawbacks to its use such as limited video bandwidth which affects picture sharpness and faithfulness of colours. NTSC takes its name from the American committee which formulated it, the National Television Systems Committee.
NTSC-M Unlike PAL, with its many varied underlying broadcast television systems in use throughout the world, NTSC colour encoding is invariably used with broadcast system M, giving NTSC-M.
NTSC-J A variation of the NTSC system used throughout Japan. With NTSC-J, black level and blanking level of the signal are identical (at 0 IRE), as they are in PAL, while in American NTSC, black level is slightly higher (7.5 IRE) than blanking level. Since the difference is quite small, a slight turn of the brightness knob is all that is required to correctly show the "other" variant of NTSC on any set as it is supposed to be; most watchers might not even notice the difference in the first place.
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