The transition to high-definition television is a process by which standard-definition (SD) television signals are upgraded to a high-definition (HD) format. [1] In this process, channels usually either simulcast their HD signals alongside the existing SD signals or broadcast exclusively in HD. The transition to the latter is often referred to as the standard-definition television switch-off.
In most territories around the world, the complete shutdown of the lower-resolution signals has not yet begun or is still in its early stages, notably in the many countries that are still undergoing the analogue switch-off.
In territories and services where SD signals have already ceased, television sets that do not support terrestrial HD signals are required to be replaced or equipped with set-top boxes compatible with HD signals. [1] [2] [3] In some cases, this switch-off has led to a high demand for new set-top boxes and TV sets, resulting in shortages. [4]
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As of April 2024, All the Singaporean native channels are now in high definition.
Digital Video Broadcasting (DVB) is a set of international open standards for digital television. DVB standards are maintained by the DVB Project, an international industry consortium, and are published by a Joint Technical Committee (JTC) of the European Telecommunications Standards Institute (ETSI), European Committee for Electrotechnical Standardization (CENELEC) and European Broadcasting Union (EBU).
DVB-T, short for Digital Video Broadcasting – Terrestrial, is the DVB European-based consortium standard for the broadcast transmission of digital terrestrial television that was first published in 1997 and first broadcast in Singapore in February 1998. This system transmits compressed digital audio, digital video and other data in an MPEG transport stream, using coded orthogonal frequency-division multiplexing modulation. It is also the format widely used worldwide for Electronic News Gathering for transmission of video and audio from a mobile newsgathering vehicle to a central receive point. It is also used in the US by Amateur television operators.
PALplus is an analogue television broadcasting system aimed to improve and enhance the PAL format by allowing 16:9 aspect ratio broadcasts, while remaining compatible with existing television receivers, defined by International Telecommunication Union (ITU) recommendation BT.1197-1. Introduced in 1993, it followed experiences with the HD-MAC and D2-MAC, hybrid analogue-digital widescreen formats that were incompatible with PAL receivers. It was developed at the University of Dortmund in Germany, in cooperation with German terrestrial broadcasters and European and Japanese manufacturers. The system had some adoption across Europe during the late 1990s and helped introduce widescreen TVs in the market, but never became mainstream.
Televisió de Catalunya is the public broadcasting network of Catalonia, one of the seventeen autonomous communities of Spain.
Television in Germany began in Berlin on 22 March 1935, broadcasting for 90 minutes three times a week. It was home to the first regular television service in the world, named Fernsehsender Paul Nipkow.
Freesat is a British free-to-air satellite television service, first formed as a joint venture between the BBC and ITV plc and now owned by Everyone TV. The service was formed as a memorandum in 2007 and has been marketed since 6 May 2008. Freesat offers a satellite alternative to the Freeview service on digital terrestrial television, with a broadly similar selection of channels available without subscription for users purchasing a receiver.
WCNY-TV is a PBS member television station in Syracuse, New York, United States. Owned by The Public Broadcasting Council of Central New York, Inc., it is sister to classical music radio station WCNY-FM (91.3). The two stations share studios on West Fayette Street in Syracuse's Near Westside neighborhood and transmitter facilities in Pompey, New York.
Digital terrestrial television in Australia commenced on 1 January 2001 in Sydney, Melbourne, Brisbane, Adelaide and Perth using DVB-T standards. The phase out of analogue PAL transmissions began on 30 June 2010 and was completed by 10 December 2013.
In broadcasting, digital subchannels are a method of transmitting more than one independent program stream simultaneously from the same digital radio or television station on the same radio frequency channel. This is done by using data compression techniques to reduce the size of each individual program stream, and multiplexing to combine them into a single signal. The practice is sometimes called "multicasting".
DTMB is the digital TV standard for mobile and fixed devices, developed in the People's Republic of China. It is used there and in both of their special administrative regions, and also in Cambodia, the Comoros, Cuba, East Timor, Laos, Vietnam, and Pakistan. In Pakistan, as part of the China–Pakistan Economic Corridor Project, ZTE Corporation will provide Pakistan Television Corporation collaboration across several digital terrestrial television technologies, staff training, and content creation, including partnerships with Chinese multinational companies in multiple areas, such as television sets and set top boxes, as a form of "International Cooperation".
DVB-T2 is an abbreviation for "Digital Video Broadcasting – Second Generation Terrestrial"; it is the extension of the television standard DVB-T, issued by the consortium DVB, devised for the broadcast transmission of digital terrestrial television. DVB has been standardized by ETSI.
There are four major forms of digital television (DTV) broadcast in the United Kingdom: a direct-to-home satellite service from the Astra 28.2°E satellites provided by Sky UK, a cable television service provided by Virgin Media ; a free-to-air satellite service called Freesat; and a free-to-air digital terrestrial service called Freeview. In addition, an IPTV system known as BT TV is provided by BT. Individual access methods vary throughout the country. 77% of the United Kingdom has access to HDTV via terrestrial digital television. Satellite is the only source of HDTV broadcast available for the remaining 23%.
High-definition television in the United Kingdom is available via cable, IPTV, satellite and terrestrial television. The first high-definition broadcasts began in late 2005 and since then the number of channels available to view has grown to a maximum of 87 that can be viewed on pay-TV service, Sky.
The Netherlands now has three major forms of broadcast digital television. Terrestrial (DVB-T), Cable (DVB-C), and Satellite (DVB-S). In addition IPTV services are available. At the end of the first quarter of 2013 almost 84% of the households in the Netherlands had some form of digital television.
Digital television in the United States is available via digital terrestrial television (DTT), digital cable, satellite television, and IPTV providers.
Tagesschau24 is a German free-to-air television channel owned by ARD and managed by Norddeutscher Rundfunk. Launched on 30 August 1997 as "EinsExtra", the channel was renamed Tagesschau 24 on 1 May 2012.
High-definition television in Australia is available via cable, IPTV, satellite and terrestrial television. The first high-definition broadcasts began in 2001 and since then the number of channels available to view has grown to a maximum of 27 that can be viewed on pay-TV service, Foxtel.
Television in Catalonia, in reference to the autonomous community of Spain, is made up of television channels broadcast exclusively in Catalonia, whether for the whole of Catalonia or for certain regions and counties, as well as state-wide Spanish channels, which may or may not have disconnections from the general feed with exclusive programmes for Catalonia.
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