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Analog television is the original television technology that uses analog signals to transmit video and audio. [1] In an analog television broadcast, the brightness, colors and sound are represented by amplitude , phase and frequency of an analog signal.
Analog TV systems global map, with System G in blue. CCIR System G, also known as the "Gerber Standard", is an analog broadcast television system used in sixty countries around the world for UHF channels. [1] [2] [3] System G is generally associated with System B for VHF. [1] [2] [3] Plan showing VHF frequency ranges for ITU Systems
Analog TV systems global map, with System D in pink. CCIR System D is an analog broadcast television system used in Bulgaria, Latvia, Lithuania, Poland, Romania, Slovakia, Czech Republic, Hungary, Albania and the People's Republic of China, Mongolia, Kyrgyzstan, North Korea, Tajikistan, Turkmenistan, Uzbekistan, Armenia, Azerbaijan, Georgia, Kazakhstan, Moldova, Russia, Ukraine and Belarus ...
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When used with SECAM, the 'R' lines' carrier is at 4.40625 MHz deviating from +350±18 kHz to -506±25 kHz. The 'B' lines' carrier is at 4.250 MHz deviating +506±25 kHz to -350±18 kHz. Neither colour encoding system has any effect on the bandwidth of system B as a whole.
819-line was a monochrome TV system developed and used in France [2] [3] as television broadcast resumed after World War II. Transmissions started in 1949 and were active up to 1985, although limited to France, Belgium and Luxembourg. [4] It is associated with CCIR System E and F. [4]
Analog TV standard by nation: countries using 625-line are in blue. 625-line (or CCIR 625/50) is a late 1940s European analog standard-definition television resolution standard. [1] [2] It consists of a 625-line raster, with 576 lines carrying the visible image at 25 interlaced frames per second.
Analog TV systems global map, with System M in red. CCIR System M, [1] [2] [3] sometimes called 525–line, NTSC, NTSC-M, or CCIR-M, [4] [5] is the analog broadcast television system approved by the FCC (upon recommendation by the National Television System Committee - NTSC) [6] for use in the United States since July 1, 1941, [7] [8] replacing the 441-line TV system introduced in 1938. [8]