High Quality Content by WIKIPEDIA articles! Digital television (DTV) is the transmission of audio and video by digitally processed and multiplexed signal, in contrast to the totally analog and channel separated signals used by analog TV. It is an innovative service that represents a significant evolution in television technology since color television in the 1950s. Many countries are replacing broadcast analog television with digital television to allow other uses of the television radio spectrum. Several regions of the world are in different stages of adaptation and are implementing different broadcasting standards. There are four different digital television terrestrial broadcasting standards (DTTB) and they are: Advanced Television System Committee (ATSC) uses eight-level vestigial sideband (8 VSB) for terrestrial broadcasting. This standard has been adopted in the United States and in other countries. Digital Video Broadcasting-Terrestrial (DVB-T) uses coded orthogonal...

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