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Satellite tv: US Patent: 4,381,562: Broadcast sort satellite communication programs by Anthony Acampora, April 26, 1983, assigned to Bell Labs. movie mania On an international convention in Stockholm in 1961, the International Telecommunication Union designated requirements for broadcast television programs. 1 Every customary is designated a letter (A-M); together with a color system (NTSC, PAL, SECAM), this fully specifies all of the monaural analog television techniques on the planet (for instance, PAL-B, NTSC-M, and so on.).

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