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Encyclopedia > Multiplex (TV)

A multiplex (called virtual sub-channel in the United States and Canada) is a group of digital TV channels that are mixed together for broadcast. A set top box is required to unmix and select a channel for viewing. A multiplex can contain half a dozen TV channels yet only uses the space of one analog channel. A multiplex can also carry radio and interactive TV content. Digital television (DTV) uses digital modulation and compression to broadcast video, audio and data signals to television sets. ... The term set-top box describes a device that connects to a television and some external source of signal, and turns the signal into content then displayed on the screen. ...


External links

  • List of UK multiplexes
  • Technical list of UK multiplexes

 
 

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