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Encyclopedia > Digital terrestrial television

Digital Terrestrial Television (DTTV or DTT) is an implementation of digital technology to provide a greater number of channels and/or better quality of picture and sound using aerial broadcasts to a conventional antenna (or aerial) instead of a satellite dish or cable connection. The technology used is ATSC in North America, ISDB-T in Japan, DVB-T in Europe and Australia, and DMB-T/H in China (including Hong Kong); the rest of the world remaining mostly undecided. ISDB-T is very similar to DVB-T and can share front-end receiver and demodulator components. A yagi antenna Most simply, an antenna is an electronic component designed to send or receive radio waves. ... Sky Digital mini-dish Astros mini-dish. Special dish for up to 16 satellite positions (Ku-band) Satellite dish antenna for C-Band Satellite Dishes installed on an apartment complex A satellite dish is a type of parabolic antenna designed with the specific purpose of transmitting signals to and... For other uses, see Cable (disambiguation). ... ATSC redirects here. ... A picture of ISDB-T (taken during a tour of the NHK Osaka broadcasting station) Integrated Services Digital Broadcasting (ISDB) is the digital television (DTV) and digital audio broadcasting (DAB) format that Japan has created to allow radio and television stations there to convert to digital. ... Official DVB logo, found on compliant devices DVB, short for Digital Video Broadcasting, is a suite of internationally accepted open standards for digital television. ... DMB-T/H or DTMB (GB 20600-2006) is the Peoples Republic of Chinas (PRC) terrestrial digital television standard and will cover fixed and mobile terminals. ...

DTT broadcasting systems by country.
DTT broadcasting systems by country.

Contents

Transmission

DTTV is transmitted on radio frequencies through the airwaves that are similar to standard analog television, with the primary difference being the use of multiplex transmitters to allow reception of multiple channels on a single frequency range (such as a UHF or VHF channel). It has been suggested that this article or section be merged with Radio waves. ... Analog television (or analogue television) encodes television and transports the picture and sound information as an analog signal, that is, by varying the amplitude and/or frequencies of the broadcast signal. ... In telecommunications, multiplexing (also muxing or MUXing) is the combining of two or more information channels onto a common transmission medium using hardware called a multiplexer or (MUX). ... This article is about the radio frequency. ... Very high frequency (VHF) is the radio frequency range from 30 MHz (wavelength 10 m) to 300 MHz (wavelength 1 m). ...


The amount of data that can be transmitted (and therefore the number of channels) is directly affected by the modulation method of the channel. The modulation method in DVB-T is COFDM with either 64 or 16 state Quadrature Amplitude Modulation (QAM). In general a 64QAM channel is capable of transmitting a greater bitrate, but is more susceptible to interference. 16 and 64QAM constellations can be combined in a single multiplex, providing a controllable degradation for more important programme streams. This is called hierarchical modulation. For other uses, see Data (disambiguation). ... DVB-T stands for Digital Video Broadcasting - Terrestrial and it is the DVB European consortium standard for the broadcast transmission of digital terrestrial television. ... Orthogonal frequency division modulation (OFDM, also called orthogonal frequency division multiplexing) is a technique for the modulation of digital information onto an analog carrier electromagnetic (e. ... “QAM” redirects here. ... Adaptive modulation is a transmission scheme in digital communications where the transmitter adapts its transmission mode in accordance with the channel. ...


New developments in compression have resulted in the MPEG-4/AVC standard which will enable two high definition services to be coded into a 24 Mbit/s European terrestrial transmission channel.


The DVB-T standard is not used for terrestrial digital television in North America. Instead, the ATSC standard calls for 8VSB modulation, which has similar characteristics to the vestigial sideband modulation used for analogue television. This provides considerably more immunity to interference, but is not immune - as DVB-T is - to multipath distortion and also does not provide for single-frequency network operation (which is in any case not relevant in the United States). ATSC Standards document a digital television format intended to replace (in the United States) the analog NTSC television system (NTSC is used mostly in North America and Japan). ... 8VSB is the 8-level vestigial sideband modulation method adopted for terrestrial broadcast of the ATSC digital television standard in the United States and Canada. ... In radio communications, a sideband is a band of frequencies higher than or lower than the carrier frequency, containing energy as a result of the modulation process. ...


Both systems use the MPEG-2 transport stream and video codec; they differ significantly in how related services (such as multichannel audio, captions, and program guides) are encoded. MPEG-2 is a standard for the generic coding of moving pictures and associated audio information [1]. It is widely used around the world to specify the format of the digital television signals that are broadcast by terrestrial (over-the-air), cable, and direct broadcast satellite TV systems. ... Streaming media are media that are consumed (read, heard, viewed) while it is being delivered. ... A video codec is a device or software that enables video compression and or decompression for digital video. ...


Advantages

  • Digital reception is mainly better overall, even when reception for both is optimum.
  • It's vastly easier to obtain the optimum digital picture than the optimum terrestrial picture.
  • Many more channels can fit on the digital transmission.

Disadvantages

  • New equipment is required.
  • Antenna installation may be required.
  • Analog requires lower signal strength to get a watchable picture. By extension, digital does not degrade as gracefully as analog.

Reception

DTTV is received via a digital set-top box, or integrated receiving device, that decodes the signal received via a standard aerial antenna. However, due to frequency planning issues, an aerial with a different group (usually a wideband) may be required if the DTTV multiplexes lie outside the bandwidth of the originally installed aerial. This is quite common in the UK, see external links. A set-top box (STB) or set-top unit (STU) is a device that connects to a television and an external source of signal, turning the signal into content which is then displayed on the television screen. ... A Yagi-Uda beam antenna Short Wave Curtain Antenna (Moosbrunn, Austria) A building rooftop supporting numerous dish and sectored mobile telecommunications antennas (Doncaster, Victoria, Australia) An antenna is a transducer designed to transmit or receive radio waves which are a class of electromagnetic waves. ...


DTT Around the world

The transition to digital television is a process that follows different paces around the world. ...

Europe

The United Kingdom (1998), Sweden (1999) and Spain (2000) were the first to launch DTT with platforms heavily reliant on pay television. All platforms experienced many starter problems, in particular the British and Spanish platforms which failed financially. Nevertheless, Boxer, the Swedish pay platform which started in 2004, proved to be very successful. “Pay TV” redirects here. ...


DTT in the United Kingdom was launched in November 1998 as a primarily subscription service branded as ONdigital, a joint venture between Granada Television and Carlton Communications, with only a few channels being available free to air. ONdigital soon ran into financial difficulties with subscriber numbers below expectations, and in order to attempt to reverse their fortunes, it was decided that the ITV and ONdigital brands should align, and the service was rebranded ITV Digital in 2001. Despite an expensive advertising campaign, ITV Digital struggled to attract sufficient new subscribers and in 2002 closed the service. After commercial failure of the Pay TV proposition it was relaunched as the free-to-air Freeview platform in 2002. Top Up TV, a lite pay DTT service, became available in 2004. Of all countries, British DTT has currently the highest penetration rate. UK covers Northern Ireland DTT. Digital terrestrial television in the United Kingdom (which is also available on the Isle of Man and will one day be available on the Channel Islands) is made up of over fifty primarily free-to-air television channels (including all the national analogue stations) and over twenty radio channels from... ITV Digital used to be the sole British terrestrial digital television broadcaster. ... This article does not cite any references or sources. ... Carlton Communications plc was a former British media company, which was founded by Michael Green and listed on the London Stock Exchange from 1983 until 2 February 2004, when it merged with Granada plc, to form ITV plc. ... Free-to-air is a phrase used to describe television and radio broadcasts which are available without subscription and without decryption (pay-TV). ... Top Up TV is a pay TV service provided in the United Kingdom. ...


In the Republic of Ireland IT's TV was the sole applicant for a digital terrestrial television license under the provisions of the Irish Broadcasting Act 2001. It proposed a triple play deployment with Broadband, TV and Digital Radio services. However following financial difficulties with other DTT deployments, most particularly in the neighbouring UK and in Spain and Portugal, Its TV failed to get its license conditions varied or to get a time extension and its license was eventually withdrawn for non performance. Under subsequent legislation in May 2007, RTÉ and the separate broadcasting and spectrum regulators are mandated to invite applications during 2008 under the Broadcasting (Amendment) Act 2007 and the regulators are rumoured to be inviting licence applications in January in then and June 2008 respectively. RTÉ Networks is required to broadcast in digital under the new Act and will receive an automatic license through the RTÉ Authority and will upgrade part of its network over a 2 year period. No upgrades to relays (small transmitters) have been announced. These may not be upgraded until the next decade. The deployment of digital terrestrial television in Ireland has had a chequered history, with the first tests being carried out in 1998, but no public trials until August 2006. ... This is an Act of the Republic of Ireland Parliament (in Irish called the Oireachtas-(consisting of the Chamber of Deputies or Daíl and Senate or Seanad) not to be confused with British broadcasting Acts and concern Irish Analogue broadcasting systems and establishment of Digital Terrestrial Television by the...


In Spain most multiplexes closed after the failure of Quiero TV, the country's original pay DTT platform. DTT was relaunched on 30 November 2005, with approximately 30 free-to-air national and autonomous region TV and radio services. is the 334th day of the year (335th in leap years) in the Gregorian calendar. ... Year 2005 (MMV) was a common year starting on Saturday (link displays full calendar) of the Gregorian calendar. ...


In Sweden, DTT was launched in 1999 solely as a paid service. Today (2007) there are 38 channels in 5 MUXs. 11 of those are free-to-air channels from a number of different networks. Switch-off of the analogue TV service started in September 2005 and finished on 15 October 2007. is the 288th day of the year (289th in leap years) in the Gregorian calendar. ... Year 2007 (MMVII) was a common year starting on Monday of the Gregorian calendar in the 21st century. ...


Finland launched DTT in 2001, and terminated analogue transmissions nationwide as the third country in the world on 1 September 2007. Finland has successfully launched a mixture of pay and free-to-air DTT services. is the 244th day of the year (245th in leap years) in the Gregorian calendar. ... Year 2007 (MMVII) was a common year starting on Monday of the Gregorian calendar in the 21st century. ...


Germany launched a free-to-air platform region-by-region, starting in Berlin in November 2002. The analogue broadcasts are planned to cease soon after digital transmissions are started. Berlin became completely digital on 4 August 2003. is the 216th day of the year (217th in leap years) in the Gregorian calendar. ... Year 2003 (MMIII) was a common year starting on Wednesday of the Gregorian calendar. ...


France's TNT (Télévision Numérique Terrestre) offers 18 free and 11 pay channels. A 70% DTT penetration rate is expected by March 2007. Free-to-view satellite services offering the same DTT offer are also expected to be readied by the end of 2006. Télévision Numérique Terrestre logo TNT (Télévision Numérique Terrestre) is the national digital terrestrial service for France. ...


Luxembourg launched DTT services in April 2006. The national service launched in June 2006. On 1 September 2006, Luxembourg became the first European country to transition completely to DTT. is the 244th day of the year (245th in leap years) in the Gregorian calendar. ... Year 2006 (MMVI) was a common year starting on Sunday of the Gregorian calendar. ...


The EU recommended in December 2005 that its Member States cease all analogue television transmissions by the year 2012. Some EU member states decided to complete the transition as early as 2007 (e.g. Finland), nevertheless two member states (unspecified in the announcement) have expressed concerns that they would not be able to switch due to technical limitations.


North and South America

In the United States by no later than February 17, 2009, all U.S. television broadcasts will be exclusively digital, under the Digital Television and Public Safety Act of 2005.[1] Furthermore, starting March 1, 2007, new television sets that receive signals over-the-air, including pocket sized portable televisions, must include ATSC digital tuners for digital broadcasts.[2] Currently, most U.S. broadcasters are transmitting in both analog and digital formats; a few are digital-only. Most U.S. stations are not permitted to shut down their analog transmissions prior to February 16, 2009, unless doing so is required in order to complete work on a station's permanent digital facilities.[3] In 2008, the FCC will finish auctioning channels 52–59 (the lower half of the 700 MHz band) for other communications services[4], completing the reallocation of broadcast channels 52–69 that began in the late 1990s. is the 48th day of the year in the Gregorian calendar. ... 2009 (MMIX) will be a common year starting on Thursday of the Gregorian calendar. ... is the 60th day of the year (61st in leap years) in the Gregorian calendar. ... Year 2007 (MMVII) was a common year starting on Monday of the Gregorian calendar in the 21st century. ... Established in 1982, the Advanced Television Systems Committee (ATSC) is the group that developed the ATSC digital television standard for the United States, also adopted by Canada, Mexico, South Korea, and recently Honduras and is being considered by other countries. ... is the 47th day of the year in the Gregorian calendar. ... 2009 (MMIX) will be a common year starting on Thursday of the Gregorian calendar. ...


The analog switch-off will render all non-digital televisions unable to receive most over-the-air television channels obsolete; however, low-power television stations and cable TV systems are not required to convert to digital until 2011 or later. Beginning January 1, 2008, consumers may request coupons to help cover most of the cost of these converters by calling a toll free number or via a website.[5] is the 1st day of the year in the Gregorian calendar. ... 2008 (MMVIII) is the current year, a leap year that started on Tuesday of the Anno Domini (or common era), in accordance to the Gregorian calendar. ...


In Venezuela, tests are being performed with full deployment to start 2008-2009. DTT will coexist with analog standard television for some time, until full deployment of the system on a nationwide level is accomplished.


In Brazil, they chose a Japanese ISDB-T modified version, called (SBTVD).


Cuba has announced recently that in the current year could leave defined the norm to use. According to official sources of the MIC (Ministry of Computer science and Telecommunications) the Caribbean island would be decided between European format DVB or the DSM used by China. At the moment, Cuban specialists make tests in both formats but "analogical blackout" is far away.


Uruguay has chosen the European DVB.T standard.


Asia

Japan

Japanese Ministry of Internal Affairs and Communications and Dpa (The Association for Promotion of Digital Broadcasting-Japan) jointly set the specification and announced the guide line of "simplified DTT tuner" with price under 5,000 Japanese yen on December 25, 2007. MIAC officially solicit manufactures to put it on the market by end of March 2010 (end of fiscal year 2009). MIAC is estimating 14 million, at maximum, set of traditional none digital TV remains and needs the "simplified DTT tuner" to be adapted even after complete transition to DTT after July 2011, and is aiming to avoid disposal of large number of useless TV sets without such a tuner at one time. Ministry of Internal Affairs and Communications (総務省 Soumu-sho) is one of ministries in the Cabinet of Japan. ... Specification redirects here. ... A modern ATU for ham operators. ... Yen redirects here. ... is the 359th day of the year (360th in leap years) in the Gregorian calendar. ... Year 2007 (MMVII) was a common year starting on Monday of the Gregorian calendar in the 21st century. ... 2010 (MMX) will be a common year starting on Friday of the Gregorian calendar. ... 2009 (MMIX) will be a common year starting on Thursday of the Gregorian calendar. ... Look up analog, analogue in Wiktionary, the free dictionary. ... TV redirects here. ... 2011 (MMXI) will be a common year starting on Saturday of the Gregorian calendar. ...


December 20, 2007, Japan Electronics and Information Technology Industries Association set the rule (of copy control) for DTT broadcasting allows consumers up to 10 time of dubbing of entire TV program with video and audio into DVD recorder and etc. by naming "Dubbing 10"(ja:ダビング10) (actually up to 9 times of copy then 1 time or last time of move) and start the broadcasting with "Dubbing 10" at about 4:00 a.m. on June 2, 2008 that settled after long talks with Japanese Society for Rights of Authors, Composers and Publishers. The manufacture for DVD recorder and associated DTT recorder will make unit conforming "Dubbing 10" rule and some manufacture shall release the down loading subprogram to up date recorder's internal software for existing user. is the 354th day of the year (355th in leap years) in the Gregorian calendar. ... Year 2007 (MMVII) was a common year starting on Monday of the Gregorian calendar in the 21st century. ... In sound recording, dubbing is the transfer of recorded audio material from one medium to another of the same or a different type. ... DVR with built-in DVD recorder. ... The 12-hour clock is a timekeeping convention in which the 24 hours of the day are divided into two periods called ante meridiem (a. ... is the 153rd day of the year (154th in leap years) in the Gregorian calendar. ... 2008 (MMVIII) is the current year, a leap year that started on Tuesday of the Anno Domini (or common era), in accordance to the Gregorian calendar. ...


April 3, 2008, Dpa (The Association for Promotion of Digital Broadcasting-Japan) announced that total 32.71 million of DTT (ISDB-T) receiving TV sets (except 1seg receiver) are installed in Japan as of end of March 2008. Dpa also announced the guide line documentation to manufacture who make the DTT receive, recod and replay unit to operate with Personal computer on April 8, 2008 . This add-on unit operates on USB or PCI BUS, and started to sell on reservation basis from late April and put on retail store in mid. May 2008. is the 93rd day of the year (94th in leap years) in the Gregorian calendar. ... 2008 (MMVIII) is the current year, a leap year that started on Tuesday of the Anno Domini (or common era), in accordance to the Gregorian calendar. ... Integrated Services Digital Broadcasting (ISDB) is the digital television (DTV) and digital audio broadcasting (DAB) format. ... See TV (disambiguation) for other uses and Television (band) for the rock band European networks National In much of Europe television broadcasting has historically been state dominated, rather than commercially organised, although commercial stations have grown in number recently. ... Official 1seg logo 1seg (Katakana: ワンセグ) is a mobile terrestrial digital audio/video and data broadcasting service in Japan. ... 2008 (MMVIII) is the current year, a leap year that started on Tuesday of the Anno Domini (or common era), in accordance to the Gregorian calendar. ... April 8 is the 98th day of the year (99th in leap years) in the Gregorian calendar. ... 2008 (MMVIII) is the current year, a leap year that started on Tuesday of the Anno Domini (or common era), in accordance to the Gregorian calendar. ... Hi all! Goog directory <a href=http://tajga. ... USB redirects here. ... This article is about the computer bus type. ... PCI Express bus card slots (from top to bottom: x4, x16, x1 and x16), compared to a traditional 32-bit PCI bus card slot (bottom) In computer architecture, a bus is a subsystem that transfers data or power between computer components inside a computer or between computers, and a bus... For other uses, see May (disambiguation). ... 2008 (MMVIII) is the current year, a leap year that started on Tuesday of the Anno Domini (or common era), in accordance to the Gregorian calendar. ...


Analogue to digital transition

The broadcasting of digital terrestrial transmissions has led to many countries planning to phase out existing analogue broadcasts. This table shows the launches of DTT and the closing down of analogue television in several countries.

  • Official launch: The official launch date of digital terrestrial television in the country, not the start for trial broadcasts.
  • Start of closedown: The date for the first major closedown of analogue transmitters.
  • End of closedown: The date when analogue television is definitely closed down.
  • System: Transmission system, e. g. DVB-T, ATSC or ISDB-T.
  • Interactive: System used for interactive services, such as MHP and MHEG-5.
  • Compression: Video compression standard used. Most systems use MPEG-2, but the more efficient H.264/MPEG-4 AVC has become increasingly popular among networks launching later on. Some countries use both MPEG-2 and H.264, for example the UK which uses MPEG-2 for standard content but MPEG-4 for some HD broadcasts.
Country
Official launch
Start of
closedown
End of
closedown
System
Interactive
Compression
References
Albania 2005-08 DVB-T [citation needed]
Andorra 2007-09-25 DVB-T MHP [6]
Australia 2001-01-01 The new government has also extended the starting date of digital-only transmission in metropolitan markets for a year from December 2008[7] 2013-12-31 DVB-T MPEG-2 [citation needed]
Austria 2006-10-26 2007-03-05[8] DVB-T MHP [citation needed]
Belgium 2002/2003 2008-12-31 (Flemish Community) 2011 (Francophone Community) DVB-T No MPEG-2 [citation needed]
Brazil 2007-12-03 2016-06-29 SBTVD H.264/MPEG-4 AVC [citation needed]
Canada 2011-08-31 ATSC MPEG-2 [9]
China 2007-2008 DMB-T/H [citation needed]
Croatia 2007 2010 DVB-T [citation needed]
Czech Republic 2004 2007-08 2010-10 DVB-T MHP MPEG-2 [citation needed]
Denmark 2006-03-31 2009-11-01 DVB-T MHP MPEG-2, H.264 [1]
Estonia 2006-12-15 2008-03-30 (Ruhnu island) 2012-02 (planned) DVB-T MPEG-4 H.264 [10][11]
Faroe Islands 2002-12 2002-12 DVB-T [citation needed]
Finland 2001-08-27 2007-09-01[12] 2007-09-01 DVB-T MHP (abandoned) MPEG-2 [13]
France 2005-03-31 2008-03 2011-11-30 DVB-T MPEG-2, H.264 [citation needed]
Germany 2002-11 2003-08 2008 (planned) DVB-T MPEG-2 [citation needed]
Greece 2006 DVB-T
Hong Kong 2007-12-31 2012 DMB-T/H MHEG-5 (TVB) MPEG-2, H.264 [14][15]
Ireland 1999 and 2006-2008 Trial, 2008 launch planned 2012 early likely due to NI 2012 late likely due to NI/& EC goal DVB-T RCT abandoned MPEG-4 likelyH.264
Italy 2004-01-01 2010-01-01 DVB-T MHP MPEG-2 [citation needed]
Japan 2003-12-01 2011-07-24 (planned) ISDB-T [16][17]
Lithuania 2006 DVB-T MPEG-4
Luxembourg 2006-04 2006-09-01 2008/2009 DVB-T [citation needed]
Malaysia 2006-09 (trials) 2015 DVB-T MHEG-5 H.264 [citation needed]
Mexico 2004-07-05[18] 2022-01-01 ATSC [19]
Morocco 2007-06-01 DVB-T [citation needed]
Netherlands 2003 2006-12-11 DVB-T [citation needed]
New Zealand April 2008 75% digital penetration or 2012, whichever comes first. 1 year after start DVB-T MHEG-5 H.264/MPEG-4 AVC [20][21]
Norway 2007-09 [22] 2008-03 2009-12 DVB-T H.264/MPEG-4 AVC [citation needed]
Philippines 2006-10 (trials)/ 2007 2015-12-31 (Announced by NTC) 2015-12-31 (Announced by NTC) DVB-T (testing) [citation needed]
Romania 2005-12-01 2012-12-31 (planned) DVB-T [citation needed]
Portugal 2008 2011 (planned by PT) DVB-T MPEG-4
Russia 2012 2017 DVB-T
Slovenia 2007 2010 2011 DVB-T H.264/MPEG-4 AVC [citation needed]
South Africa 2006-03 2008-11-01 2011-11-01 DVB-T H.264/MPEG-4 AVC [citation needed]
South Korea 2001 2012-12-31 2012-12-31 ATSC [citation needed]
Spain 2000-05 2008[23] 2010-04-03 DVB-T MHP MPEG-2 [citation needed]
Sweden 1999-04-01[24] 2005-09-19 2007-10-15 DVB-T MHP MPEG-2/H.264[25] [citation needed]
Switzerland 2001 2002-03 2009-10 DVB-T [citation needed]
Taiwan 2006-07 2008 2010 DVB-T [citation needed]
Turkey 2006-02 (trial services) DVB-T [citation needed]
United Kingdom 1998-11-15 2007 (Whitehaven) 2012 DVB-T MHEG-5 MPEG-2, H.264 [26]
United States 2003 2009-02-17 ATSC MPEG-2 [27]
Venezuela 2008 SBTVD H.264/MPEG-4 AVC [citation needed]

See also

The transition to digital television is a process that follows different paces around the world. ... Official 1seg logo 1seg (Katakana: ワンセグ) is a mobile terrestrial digital audio/video and data broadcasting service in Japan. ...

Notes

  1. ^ Title III of the Deficit Reduction Act of 2005, Pub. L. No. 109-171, 120 Stat. 4 (February 8, 2006), codified at 47 U.S.C. § 309(j)(14).
  2. ^ FCC rule requires all new TVs to be digital. The Boston Globe (2007-02-26). Retrieved on 2007-04-24.
  3. ^ Federal Communications Commission (2007-12-22). Third Periodic DTV Review Report and Order. Retrieved on [[2008-02-09]]. FCC 07-228}}
  4. ^ FCC: Wireless Services: Lower 700 MHz. Federal Communications Commission (2004-10-28). Retrieved on 2007-05-09.
  5. ^ http://www.dtv2009.gov Digital Transition website Access date= 2007-12-31
  6. ^ , <http://www.tdt.ad/> 
  7. ^ Complete digital TV switch over by 2013, Sydney Morning Herald, 2007-12-18, <http://news.smh.com.au/complete-digital-tv-switch-over-by-2013/20071218-1hun.html>. Retrieved on 21 December 2007 
  8. ^ DVB-T: Zeitplan, DVB-T.at, <http://www.dvb-t.at/wann-wie-umstellen/zeitplan.html>. Retrieved on 3 July 2007 
  9. ^ Broadcasting Public Notice CRTC 2007-53 - Determinations regarding certain aspects of the regulatory framework for over-the-air television, Canadian Radio and Television Commission, May 17, 2007, <http://www.crtc.gc.ca/archive/ENG/Notices/2007/pb2007-53.htm> 
  10. ^ Launch of DTT services in Estonia, DigiTAG Web Letter, December 15, 2006, <http://www.digitag.org/WebLetters/2006/External-Dec2006.html> 
  11. ^ , <http://levira.ee/771est.html> 
  12. ^ Digi-tv esillä ympäri maata. Finnish Ministry of Communications. Retrieved on 2007-08-15.
  13. ^ Finland will switch over to all-digital television, Finnish Ministry of Transport and Communications, 2007-08-31, <http://www.digitv.fi/sivu.asp?path=9;1239;9758> 
  14. ^ OFTA(2007-06-04), Hong Kong Technical Standard for Digital Terrestrial Television Broadcasting, Hong Kong
  15. ^ (Chinese) 望月. "獨家專訪TVB 折解數碼廣播七大疑團 (Exclusive interview with TVB on digital broadcasting)", e-zone AVzone, 6/9/2007, pp. 4-5. 
  16. ^ Digital Broadcasting Experts Group (DiBEG) promote ISDB-T
  17. ^ ISDB-T, Application, Present and Future, PDF File
  18. ^ Documento sin título
  19. ^ , <http://www.cft.gob.mx/cofetel/radio_tv/periodo_tran_tdt.shtml> 
  20. ^ , <http://tvnz.co.nz/view/page/1382967> 
  21. ^ , <http://www.beehive.govt.nz/ViewDocument.aspx?DocumentID=31480> 
  22. ^ RiksTV - Når kommer det?, RiksTV.no, <http://rikstv.no/Nar-kommer-det/>. Retrieved on 4 July 2007 
  23. ^ Local channels
  24. ^ Nya tillstånd för digitala TV-sändningar, Swedish Radio and TV Authority, January 20, 2001, <http://www.rtvv.se/se/Press/Nyheter/000120/> 
  25. ^ As of June 2007, H.264 is only used for HDTV in the Mälaren Valley region.
  26. ^ What is Digital Switchover?. DAS TV (2007-07-01). Retrieved on 2007-08-13.
  27. ^ National Telecommunications & Information Administration

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  Results from FactBites:
 
Speech of Commissioner Paola Manacorda at the Conference on Digital Terrestrial Television (1811 words)
It is widely recognised that the transition to digital terrestrial TV will be an essential step of the digital revolution, as it will extend the advantage of digital broadcasting to a much wider audience, turning digital TV into a veritable "mass" media.
For this reason the Authority has decided to encourage terrestrial broadcasters to go digital, by envisaging special financial incentives: analogue terrestrial operators that will switch to digital within 36 months from the release of the licence will not pay their annual fee for the use of the terrestrial frequency for a six years period.
This means that a terrestrial broadcaster already collecting 30% of the financial resources of the terrestrial television market is still allowed to operate in the radio business or in the satellite TV business.
Digital television - Wikipedia, the free encyclopedia (928 words)
Digital television (DTV) is a telecommunication system for broadcasting and receiving moving pictures and sound by means of digital signals, in contrast to analog signals in analog (traditional) tv.
It uses digital modulation data, which is digitally compressed and requires decoding by a specially designed television set or a standard receiver with a set-top box.
In particular, the interlaced scan is a legacy of analog television.
  More results at FactBites »

 
 

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