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Digital Broadcast Technologies

  • Article is provided courtesy of Cisco Press.
  • Date: Aug 20, 2001.

Article Description

Digital technology is becoming pervasive in all types of services. As computing power continues to increase, more and more functions can be tackled in the digital domain. An excellent example is the transmission of television pictures. This sample chapter from OpenCable™ Architecture, winner of NCTA Book of the Year Award, introduces a number of key digital broadcast technologies.

Data

Many applications require a data communications path from the headend to the set-top. Part 6 of the MPEG-2 standard (ISO IEC 13818-6) describes how arbitrary data packets may be segmented into MPEG-2 transport packets at the headend and reassembled at the set-top. This mechanism is the basis for the broadcast carousel (see Chapter 8, "Interactive Services").

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