give information about NTSC
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The abbreviation NTSC can refer to the National Television System Committee,[1] which developed the analog television color system that was introduced in North America in 1954 and stayed in use until digital conversion. NTSC is also an abbreviation for the National Television Standards Committee, a subset of the National Television System Committee that was responsible for producing the detailed technical specifications for the transmission standard.[citation needed] It is one of three major analog color television standards, the others being PAL and SECAM.
All the countries using NTSC are currently in the process of conversion, or have already converted to the ATSC standard, or to DVB, ISDB, or DTMB.
This page primarily discusses the NTSC color encoding system. The articles on broadcast television systems and analog television further describe frame rates, image resolution, and audio modulation. NTSC video is composite video because the luminance (luma, monochrome image) and chrominance (chroma, color applied to the monochrome image) are transmitted together as one signal. Often, the 480i (480 interlaced horizontal lines) video format is synonymous with NTSC.