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Communication Mediums for Signal, ITS, and Freeway Surveillance Systems Final Report (1996) / Chapter Skim
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A.2.4 Multimedia Communications Networks
Pages 358-360

The Chapter Skim interface presents what we've algorithmically identified as the most significant single chunk of text within every page in the chapter.
Select key terms on the right to highlight them within pages of the chapter.


From page 358...
... One method is to give He video and voice data a higher network transfer priority Han over data. Examples include the emerging Asynchronous Transfer Mode (ATE standard and FDDI-D draft standard.
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From page 359...
... Single communications technology rather Lower life cycle cost than mixed technologies All communications needs accomplished Optimum use of medium's bandwidth and over a single medium for segments on the thus lower installation cost; Single fiber pair total network does alla Networ < distribution addressing added to Facilitates interoperability with distributed voice and video users and thus, lower information distribution cost . _ Voice, data, and video in digital form Computer fnendly~ format simplifies interfaces with information processing, storage, and retrieval environment Network management technology supports Built-in test and status reporting supports voice and video, as well as data use of open standard protocols; minimizes maintenance cost _ Fault tolerant features of networks also High availability for all information, applied to video and voice enhancing safely and reducing maintenance cost Unlike point-to-po~nt or analog overlay link video distribution, multimedia networks allow video and voice to be "addressed" to users.
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From page 360...
... In fun motion video, not only is resolution decreased but a point is reached where equivalent frame rate causes image "jumping" and a rapidly changing image, especially in terms of percent of pixels consumed by the image from flame to frame (such as wig a rapidly approaching truck) will result in '~blocking." Blocking is when He aIgori~m cannot convert the compressed image back to pixels and Bus small colored blocks (perhaps "c x c")
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Key Terms

  • data rates
  • data rate
  • voice codecs
  • maintenance cost
  • voice data

  • image quality
  • motion video
  • supporting multimedia
  • single communications
  • motion scene

  • video mpeg
  • rates using
  • causes image
  • separate channels
  • format simplifies

  • communications technology
  • communication network
  • total network
  • easily recognizable
  • frame video

  • information processing
  • equivalent image
  • fun motion
  • video channels
  • digital information

  • emerging asynchronous
  • multimedia ott
  • television broadcast
  • fault tolerant
  • asynchronous data


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