Cable television is a system of delivering television programming to consumers via radio frequency (RF) signals transmitted through coaxial cables, or in more recent systems, light pulses through fibre-optic cables. This contrasts with broadcast television, in which the television signal is transmitted over-the-air by radio waves and received by a television antenna attached to the television; or satellite television, in which the television signal is transmitted over-the-air by radio waves from a communications satellite orbiting the Earth, and received by a satellite dish antenna on the roof. FM radio programming, high-speed Internet, telephone services, and similar non-television services may also be provided through these cables. Analog television was standard in the 20th century, but since the 2000s, cable systems have been upgraded to digital cable operation.
Digital television (DTV) is the transmission of television signals using digital encoding, in contrast to the earlier analog television technology which used analog signals. At the time of its development it was considered an innovative advancement and represented the first significant evolution in television technology since color television in the 1950s. Modern digital television is transmitted in high-definition television (HDTV) with greater resolution than analog TV. It typically uses a widescreen aspect ratio in contrast to the narrower format (4:3) of analog TV. It makes more economical use of scarce radio spectrum space; it can transmit up to seven channels in the same bandwidth as a single analog channel, and provides many new features that analog television cannot. A transition from analog to digital broadcasting began around 2000. Different digital television broadcasting standards have been adopted in different parts of the world; below are the more widely used standards:
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).
Digital radio is the use of digital technology to transmit or receive across the radio spectrum. Digital transmission by radio waves includes digital broadcasting, and especially digital audio radio services.
Multimedia Home Platform (DVB-MHP) is an open middleware system standard designed by the DVB project for interactive digital television. The MHP enables the reception and execution of interactive, Java-based applications on a TV-set. Interactive TV applications can be delivered over the broadcast channel, together with audio and video streams. These applications can be for example information services, games, interactive voting, e-mail, SMS or shopping. MHP applications can use an additional return channel that has to support IP.
Television in New Zealand was introduced in 1960 as a state-run service. The broadcasting sector was deregulated in 1989, when the Government allowed competition to the state-owned Television New Zealand (TVNZ). There are currently three forms of broadcast television: a terrestrial (DVB-T) service provided by Freeview; as well as satellite (DVB-S) and internet streaming (IPTV) services provided nationwide by both Freeview and Sky.
Television New Zealand, more commonly referred to as TVNZ, is a television network that is broadcast throughout New Zealand and parts of the Pacific region. All of its currently-operating channels are free-to-air and commercially funded.
Sky Network Television Limited, more commonly known as Sky, is a New Zealand broadcasting company that provides pay television services via satellite, media streaming services, and broadband internet services. As of 31 December 2022, Sky had 1,023,378 residential television subscribers consisting of 517,003 satellite subscribers and 506,375 streaming subscribers. Additionally, Sky had 23,156 broadband customers. Despite the similarity of name, branding and services, such as Sky Go and MySky shared with its European equivalent, Sky Group, there is no connection between the companies.
Free-to-air (FTA) services are television (TV) and radio services broadcast in unencrypted form, allowing any person with the appropriate receiving equipment to receive the signal and view or listen to the content without requiring a subscription, other ongoing cost, or one-off fee. In the traditional sense, this is carried on terrestrial radio signals and received with an antenna.
Datacasting is the broadcasting of data over a wide area via radio waves. It most often refers to supplemental information sent by television stations along with digital terrestrial television (DTT), but may also be applied to digital signals on analog TV or radio. It generally does not apply to data inherent to the medium, such as PSIP data that defines virtual channels for DTT or direct broadcast satellite system, or to things like cable modems or satellite modems, which use a completely separate channel for data.
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.
Freeview is New Zealand's free-to-air television platform. It is operated by a joint venture between the country's major free-to-air broadcasters – government-owned Television New Zealand and Radio New Zealand, government-subsidised Whakaata Māori, and the American-owned Warner Bros. Discovery.
Television in Bulgaria was introduced in 1959. Global players such as News Corporation, Modern Times Group, Central European Media Enterprises, Fox Broadcasting Company and others operate the biggest and most popular media outlets in the country.
Television in Iceland is currently composed of the public broadcasting service of RÚV, five free-to-view channels and a number of subscription channels provided by private broadcasters. Broadcasts began in 1955 when the American Forces Radio and Television Service (AFRTS) started an English-language television service broadcasting from Naval Air Station Keflavik, which operated until 2006. The first Icelandic-language television broadcasts started in September 1966 with the launch of RÚV, originally called Sjónvarpið. In 1986 the first privately owned TV station, Stöð 2, began broadcasts. In recent years the emergence of foreign internet streaming services such as Netflix and Disney+ has seen shift from domestic providers provide similar on demand streaming services such as Síminn Premium and Stöð 2+.
A free-to-air or FTA Receiver is a satellite television receiver designed to receive unencrypted broadcasts. Modern decoders are typically compliant with the MPEG-2/DVB-S and more recently the MPEG-4/DVB-S2 standard for digital television, while older FTA receivers relied on analog satellite transmissions which have declined rapidly in recent years.
Television in Belgium was introduced in 1953 and began with one channel each in Dutch and French. The country is heavily cabled, with 93% of households watching television through cable as of 2003.
Television is the most popular medium in Russia, with 74% of the population watching national television channels routinely and 59% routinely watching regional channels. There are 6,700 television channels in total. Before going digital television, 3 channels have a nationwide outreach : Channel One, Russia-1 and NTV.
Television was first introduced to Iran in 1958, as a privately-owned and commercially-operated enterprise, before being nationalised, remaining a state-controlled monopoly, first of National Iranian Radio and Television, and following the Iranian Revolution in 1979, of Islamic Republic of Iran Broadcasting.
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