Digital Video Broadcasting

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The term '''Digital Video Broadcasting''' (short '''DVB''') is originally a synonym for '''Digital TV''' that would broadcast video digitally instead of [[Analog TV]] transmissions. On the technical side the term DVB is a synonym to the [[DVB Standard]] which defines the encoding of the digital video streams used for broadcasting.
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The term '''Digital Video Broadcasting''' (short '''DVB''') is originally a synonym for '''Digital TV''' (short '''DTV'''), and refers to telecommunication systems that send TV signals by way of digital transmission schemes, in contrast to the older, traditional, methods of signal transmission employed by [[Analog TV]] systems.
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Digital TV or '''D'''igital '''V'''ideo '''B'''roadcasting, is a set of standards for the transmission of digital video and audio.   
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In general, Digital TV, or if you prefer '''D'''igital '''V'''ideo '''B'''roadcasting, consists of the transmission of data packets which carry encoded video/audio, and other payload data (such as EPG information), that has been combined and encapsulated within [[MPEG-2 Transport Stream]]s. Digital TV signals will adhere to a particular standard which will, suiting to the type of transmission pathway involved, define the specific way the digital video streams used in transmissions are encoded. Specifically, for each standard, the [[Modulation Scheme]], [[Frequency|frequencies]], transmission parameters and other factors are outlined and optimized for different transmission networks and target devices. On the technical side, the acronym "DVB" is a synonym for the [[DVB Standard]], which covers some of the following Digital TV standards:
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* [[DVB-S]] - used for Digital Broadcasting over Satellite
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* [[DVB-S2]] - Digital Broadcasting over Satellite Version 2,  
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* [[DVB-C]] - used for Digital Broadcasting over Cable Networks
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* [[DVB-T]] - Digital Broadcasting over Terrestrial RF - i.e. Over/off-the-air ("OTA") signals received with a normal TV antenna
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DVB consists of data packets, which carry MPEG-2 coded video/audio and EPG combined with other payload encapsulated in [[MPEG-2 Transport Stream]]s. Depending on the transmission path there a different kinds of Digital TV, which are using different [[Modulation Scheme]]s, frequencies, transmission parameters and are optimized for different transmission networks and target devices.
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While much of the world utilises the above mentioned DVB standards, other regions have opted for other Digital TV systems instead.  For example:
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* [[ATSC]] -  The standard used in North America and S.Korea for Digital Broadcasting over Terrestrial RF Networks (OTA)
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** ITUJ. 83B (ITU-T J.83, Annex B) / ANSI/SCTE 07 (formerly SCTE DVS-031) / OpenCable™ / DOCSISTM  -- defining the standard for digital cable networks in North America
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* [[ISDB]] (Integrated Services Digital Broadcasting) - Japan's standard for Digital Broadcasting
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[[DVB-S]] (Digital Broadcasting over Satellite)
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== External Links ==
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[[DVB-S2]] (Digital Broadcasting over Satellite Version 2)
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[[DVB-C]] (Digital Broadcasting over Cable Networks)
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[[DVB-T]] (Digital Broadcasting over Terrestrial RF - i.e. with a normal TV antenna)
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[[ATSC]] (The U.S. standard for Digital Broadcasting over Terrestrial Networks)
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ISDB (Japan's standard for Digital Broadcasting: Integrated Services Digital Broadcasting)
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== Links ==
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* [[DVB Standard]]s
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* [[Wikipedia:DTV|Digital Television Article on Wikipedia, includes some nice historical Facts]]
* [[Wikipedia:DTV|Digital Television Article on Wikipedia, includes some nice historical Facts]]
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* [[wikipedia:DVB|wikipedia:DVB]]
 
* [http://www.dvb.org/ The DVB Consortium]
* [http://www.dvb.org/ The DVB Consortium]
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* [[wikipedia:DVB|wikipedia's DVB article]]
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* [http://www.dba.org.au/ DVB information site in Australia]
* [http://www.atsc.org/ The Advanced Television Systems Committee, specifies the ATSC standard]
* [http://www.atsc.org/ The Advanced Television Systems Committee, specifies the ATSC standard]
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* [http://www.dba.org.au/ DVB information site in Australia]
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* [http://www.scte.org/home.cfm SCTE homepage]
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* [[wikipedia:SCTE|wikipedia's SCTE article]]
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* [[wikipedia:ISDB|wikipedia's ISDB article]]
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[[Category:Technology]]
[[Category:Technology]]
[[Category:Shorthand]]
[[Category:Shorthand]]

Revision as of 17:50, 11 January 2008

The term Digital Video Broadcasting (short DVB) is originally a synonym for Digital TV (short DTV), and refers to telecommunication systems that send TV signals by way of digital transmission schemes, in contrast to the older, traditional, methods of signal transmission employed by Analog TV systems.

In general, Digital TV, or if you prefer Digital Video Broadcasting, consists of the transmission of data packets which carry encoded video/audio, and other payload data (such as EPG information), that has been combined and encapsulated within MPEG-2 Transport Streams. Digital TV signals will adhere to a particular standard which will, suiting to the type of transmission pathway involved, define the specific way the digital video streams used in transmissions are encoded. Specifically, for each standard, the Modulation Scheme, frequencies, transmission parameters and other factors are outlined and optimized for different transmission networks and target devices. On the technical side, the acronym "DVB" is a synonym for the DVB Standard, which covers some of the following Digital TV standards:

  • DVB-S - used for Digital Broadcasting over Satellite
  • DVB-S2 - Digital Broadcasting over Satellite Version 2,
  • DVB-C - used for Digital Broadcasting over Cable Networks
  • DVB-T - Digital Broadcasting over Terrestrial RF - i.e. Over/off-the-air ("OTA") signals received with a normal TV antenna

While much of the world utilises the above mentioned DVB standards, other regions have opted for other Digital TV systems instead. For example:

  • ATSC - The standard used in North America and S.Korea for Digital Broadcasting over Terrestrial RF Networks (OTA)
    • ITUJ. 83B (ITU-T J.83, Annex B) / ANSI/SCTE 07 (formerly SCTE DVS-031) / OpenCable™ / DOCSISTM -- defining the standard for digital cable networks in North America
  • ISDB (Integrated Services Digital Broadcasting) - Japan's standard for Digital Broadcasting

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