Digital Video 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.   
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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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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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 Standards]], which include the following specific Digital TV standards:
* [[DVB-S]] - used for Digital Broadcasting over Satellite  
* [[DVB-S]] - used for Digital Broadcasting over Satellite  
* [[DVB-S2]] - Digital Broadcasting over Satellite Version 2,   
* [[DVB-S2]] - Digital Broadcasting over Satellite Version 2,   
* [[DVB-C]] - used for Digital Broadcasting over Cable Networks
* [[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-T]] - Digital Broadcasting over Terrestrial RF - i.e. [[OTA|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:
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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* [[ATSC]] -  The standards 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  
** 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
* [[ISDB]] (Integrated Services Digital Broadcasting) - Japan's standard for Digital Broadcasting
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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]]
* [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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* [[wikipedia:DVB|Wikipedia's DVB article]]
* [http://www.dba.org.au/ DVB information site in Australia]
* [http://www.dba.org.au/ DVB information site in Australia]
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* [http://www.atsc.org/ The Advanced Television Systems Committee, specifies the ATSC standard]
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* [http://www.atsc.org/ The Advanced Television Systems Committee, specifies the ATSC standards]
* [http://www.scte.org/home.cfm SCTE homepage]
* [http://www.scte.org/home.cfm SCTE homepage]
* [[wikipedia:SCTE|wikipedia's SCTE article]]
* [[wikipedia:SCTE|wikipedia's SCTE article]]

Revision as of 03:56, 16 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 Standards, which include the following specific 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 standards 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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