Digital Video Broadcasting: Difference between revisions

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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.
The term '''Digital Video Broadcasting''' ('''DVB''') is originally a synonym for '''digital TV''' ('''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 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.
Digital TV or '''D'''igital '''V'''ideo '''B'''roadcasting, is a set of standards for the transmission of digital video and audio.


On the technical side, the acronym "DVB" is a synonym for the suite of [[DVB Standards]] developed and maintained by the [[DVB Project]]. Key standards from that aggregate include:
DVB consists of data packets, which carry MPEG2 coded video/audio and EPG combined with other payload encapsulated in [[MPEG2 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.
* [[DVB-S]] - Digital Video Broadcasting - Satellite -- the DVB standard for satellite based digital television transmission
* [[DVB-S2]] -Digital Video Broadcasting - Satellite - Second Generation
* [[DVB-C]] - Digital Video Broadcasting - Cable -- the DVB standard for digital television transmissions over Cable Networks ... also see ITU-T J.83 Annex A
* [[DVB-T]] - Digital Video Broadcasting - Terrestrial -- the DVB standard for digital television transmission over terrestrial airwaves (i.e. [[OTA]] signals received with a normal TV antenna)
** [[DVB-H]] - Digital Video Broadcasting - Handheld -- the DVB standard for digital television transmission over terrestrial airwaves (i.e. OTA signals received with a handheld mobile device)
* [[DVB-T2]] - Digital Video Broadcasting - Terrestrial -- Second Generation


[[DVB-S]] (Digital Broadcasting over Satellite)


While much of the world utilizes the above mentioned [[DVB Standards]], other regions have opted for other Digital TV systems instead. For example:
[[DVB-S2]] (Digital Broadcasting over Satellite Version 2)
* [[ATSC]] - The standard used in North America and S.Korea for digital television broadcast over terrestrial airwaves (OTA)
** [[ATSC-M/H]] - the ATSC standard for digital television transmission over terrestrial airwaves received with a mobile device
** ITU-T J.83, Annex B [http://www.itu.int/rec/T-REC-J.83-200712-I/en] / ANSI/SCTE 07 (formerly SCTE DVS-031) [http://www.scte.org/content/index.cfm?pID=102] / OpenCable / DOCSISTM -- defining the standard for digital television transmission over cable networks in North America
* [[DTMB]] - Digital Terrestrial Multimedia Broadcast (formerly known as DMB-T/H) -- The standard used in China and Hong Kong for digital television broadcast over terrestrial airwaves ([[OTA]]), for both fixed location and mobile devices
* [[ISDB]] (Integrated Services Digital Broadcasting) - The standards used in Japan and many South American countries, for digital television broadcasting. Key standards from that aggregate include:
** [[ISDB-T]] -- the ISDB standard for digital television transmission over terrestrial airwaves (i.e. OTA signals received with a normal TV antenna)
*** [[1seg]] -- the ISDB standard for digital television transmission over terrestrial airwaves received with a handheld mobile device
** [[ISDB-S]] -- the ISDB standard for satellite based digital television transmission
** [[ISDB-C]] -- the ISDB standard for digital television transmissions over Cable Networks


== External links ==
[[DVB-C]] (Digital Broadcasting over Cable Networks)

[[DVB-T]] (Digital Broadctworks, e.g. mobile phones. Sometimes called DVB-N like Nokia ;) - )

[[ATSC]] (The U.S. standard for Digital Broadcasting over Terrestrial Networks)

ISDB (Japan's standard for Digital Broadcasting: Integrated Services Digital Broadcasting)


== Links ==
* [[DVB Standard]]s
* [[Wikipedia:DTV|Digital Television Article on Wikipedia, includes some nice historical Facts]]
* [[Wikipedia:DTV|Digital Television Article on Wikipedia, includes some nice historical Facts]]
* [[wikipedia:DVB|wikipedia:DVB]]
* [http://www.dvb.org/ The DVB Consortium]
* [http://www.dvb.org/ The DVB Consortium]
* [[Wikipedia:DVB|Wikipedia's DVB article]]
* [http://www.atsc.org/ The Advanced Television Systems Committee, specifies the ATSC standard]
* [http://www.dba.org.au/ DVB information site in Australia]
* [http://www.dba.org.au/ DVB information site in Australia]
* [http://www.atsc.org/ The Advanced Television Systems Committee, specifies the ATSC standards]
* [http://www.scte.org/home.cfm SCTE homepage]
* [[Wikipedia:SCTE|Wikipedia's SCTE article]]
* [http://www.itu.int/ITU-T/ ITU-T homepage]
* [[Wikipedia:ITU-T|Wikipedia's ITU-T article]]
* [[Wikipedia:ISDB|Wikipedia's ISDB article]]


[[Category:Shorthand]]
[[Category:Technology]]
[[Category:Technology]]
[[Category:Shorthand]]

Latest revision as of 07:06, 18 December 2016

The term Digital Video Broadcasting (DVB) is originally a synonym for digital TV (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 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 suite of DVB Standards developed and maintained by the DVB Project. Key standards from that aggregate include:

  • DVB-S - Digital Video Broadcasting - Satellite -- the DVB standard for satellite based digital television transmission
  • DVB-S2 -Digital Video Broadcasting - Satellite - Second Generation
  • DVB-C - Digital Video Broadcasting - Cable -- the DVB standard for digital television transmissions over Cable Networks ... also see ITU-T J.83 Annex A
  • DVB-T - Digital Video Broadcasting - Terrestrial -- the DVB standard for digital television transmission over terrestrial airwaves (i.e. OTA signals received with a normal TV antenna)
    • DVB-H - Digital Video Broadcasting - Handheld -- the DVB standard for digital television transmission over terrestrial airwaves (i.e. OTA signals received with a handheld mobile device)
  • DVB-T2 - Digital Video Broadcasting - Terrestrial -- Second Generation


While much of the world utilizes 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 television broadcast over terrestrial airwaves (OTA)
    • ATSC-M/H - the ATSC standard for digital television transmission over terrestrial airwaves received with a mobile device
    • ITU-T J.83, Annex B [1] / ANSI/SCTE 07 (formerly SCTE DVS-031) [2] / OpenCable / DOCSISTM -- defining the standard for digital television transmission over cable networks in North America
  • DTMB - Digital Terrestrial Multimedia Broadcast (formerly known as DMB-T/H) -- The standard used in China and Hong Kong for digital television broadcast over terrestrial airwaves (OTA), for both fixed location and mobile devices
  • ISDB (Integrated Services Digital Broadcasting) - The standards used in Japan and many South American countries, for digital television broadcasting. Key standards from that aggregate include:
    • ISDB-T -- the ISDB standard for digital television transmission over terrestrial airwaves (i.e. OTA signals received with a normal TV antenna)
      • 1seg -- the ISDB standard for digital television transmission over terrestrial airwaves received with a handheld mobile device
    • ISDB-S -- the ISDB standard for satellite based digital television transmission
    • ISDB-C -- the ISDB standard for digital television transmissions over Cable Networks

External links