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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 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:
Television, sometimes shortened to TV, is a telecommunication medium for transmitting moving images and sound. The term can refer to a television set, or the medium of television transmission. Television is a mass medium for advertising, entertainment, news, and sports.
JOCX-DTV, branded as Fuji TV and colloquially known as CX, is a Japanese television station based in Odaiba, Minato, Tokyo, Japan. Owned and operated by the Fuji Television Network, Inc. it is the key station of the Fuji News Network (FNN) and the Fuji Network System. It is also known for its long-time slogan, "If it's not fun, it's not TV!"
Terrestrial television or over-the-air television (OTA) is a type of television broadcasting in which the signal transmission occurs via radio waves from the terrestrial (Earth-based) transmitter of a TV station to a TV receiver having an antenna. The term terrestrial is more common in Europe and Latin America, while in Canada and the United States it is called over-the-air or simply broadcast. This type of TV broadcast is distinguished from newer technologies, such as satellite television, in which the signal is transmitted to the receiver from an overhead satellite; cable television, in which the signal is carried to the receiver through a cable; and Internet Protocol television, in which the signal is received over an Internet stream or on a network utilizing the Internet Protocol. Terrestrial television stations broadcast on television channels with frequencies between about 52 and 600 MHz in the VHF and UHF bands. Since radio waves in these bands travel by line of sight, reception is generally limited by the visual horizon to distances of 64–97 kilometres (40–60 mi), although under better conditions and with tropospheric ducting, signals can sometimes be received hundreds of kilometers distant.
A digital video recorder (DVR) is an electronic device that records video in a digital format to a disk drive, USB flash drive, SD memory card, SSD or other local or networked mass storage device. The term includes set-top boxes with direct to disk recording, portable media players and TV gateways with recording capability, and digital camcorders. Personal computers are often connected to video capture devices and used as DVRs; in such cases the application software used to record video is an integral part of the DVR. Many DVRs are classified as consumer electronic devices; such devices may alternatively be referred to as personal video recorders (PVRs), particularly in Canada. Similar small devices with built-in displays and SSD support may be used for professional film or video production, as these recorders often do not have the limitations that built-in recorders in cameras have, offering wider codec support, the removal of recording time limitations and higher bitrates.
Digital terrestrial television is a technology for terrestrial television in which land-based (terrestrial) television stations broadcast television content by radio waves to televisions in consumers' residences in a digital format. DTTV is a major technological advance over the previous analog television, and has largely replaced analog which had been in common use since the middle of the 20th century. Test broadcasts began in 1998 with the changeover to DTTV beginning in 2006 and is now complete in many countries. The advantages of digital terrestrial television are similar to those obtained by digitising platforms such as cable TV, satellite, and telecommunications: more efficient use of limited radio spectrum bandwidth, provision of more television channels than analog, better quality images, and potentially lower operating costs for broadcasters.
Oregon Public Broadcasting (OPB) is the primary television and radio public broadcasting network for most of the U.S. state of Oregon as well as southern Washington. OPB consists of five full-power television stations, dozens of VHF or UHF translators, and over 20 radio stations and frequencies. Broadcasts include local and regional programming as well as television programs from the Public Broadcasting Service (PBS) and American Public Television (APT), and radio programs from National Public Radio (NPR), American Public Media (APM), Public Radio Exchange (PRX), and the BBC World Service, among other distributors. Its headquarters and television studios are located in Portland.
Mediacorp Pte. Ltd., doing business as Mediacorp and stylised as mediacorp, is a media conglomerate in Singapore. Owned by Temasek Holdings—the holding company of the Government of Singapore—it owns television, radio, and digital media properties in the country.
Munhwa Broadcasting Corporation is one of the leading South Korean television and radio broadcasters. Munhwa is the Sino-Korean word for "culture". Its flagship terrestrial television station MBC TV broadcasts as channel 11.
Neighbours is an Australian television soap opera, which has aired since 18 March 1985. It was created by television executive Reg Watson. The Seven Network commissioned the show following the success of Watson's earlier soap Sons and Daughters. Although successful in Melbourne, Neighbours underperformed in the Sydney market and was cancelled by Seven four months after it began airing. It was immediately commissioned by rival Network Ten for a second production season, which began screening on 20 January 1986. Neighbours went on to become the longest-running drama series in Australian television history. In 2005, it was inducted into the Logie Hall of Fame.
The television industry in Turkey includes high-tech program production, transmission and coverage. Turkish Radio and Television Corporation is Turkey's largest and most powerful national television station. As of 1 August 2019, RTÜK states that there a total of 536 television channels in Turkey. Turkey is the world's fastest growing television series exporter and has currently overtaken both Mexico and Brazil as the world's second highest television series exporter after the United States. Turkish television drama has grown in since the early 2000s.
Amazon Prime Video, also known simply as Prime Video, is an American subscription video on-demand over-the-top streaming and rental service of Amazon offered as a standalone service or as part of Amazon's Prime subscription. The service primarily distributes films and television series produced by Amazon Studios and MGM Holdings or licensed to Amazon, as Amazon Originals, with the service also hosting content from other providers, content add-ons, live sporting events, and video rental and purchasing services.
GMA Network, Inc., commonly known as GMA, is a Philippine media company based in Diliman, Quezon City, Philippines. It is primarily involved in radio and television broadcasting, with subsidiaries dealing in various media related businesses. The majority of its profits are derived from publicity and marketing incomes associated to television distribution. GMA is the largest media company in the Philippines in terms of market capitalization, net income, revenue, reach, audience share and number of stations.
BBC Lifestyle is an international television channel wholly owned by BBC Studios. The channel provides six programming strands: Food, Home & Design, Fashion & Style, Health, Parenting, and Personal Development.
High-definition television describes a television system which provides a substantially higher image resolution than the previous generation of technologies. The term has been used since 1936; in more recent times, it refers to the generation following standard-definition television (SDTV), often abbreviated to HDTV or HD-TV. It is the current de facto standard video format used in most broadcasts: terrestrial broadcast television, cable television, satellite television and Blu-ray Discs.
The digital television transition, also called the digital switchover (DSO), the analogue switch/sign-off (ASO), the digital migration, or the analogue shutdown, is the process in which older analogue television broadcasting technology is converted to and replaced by digital television. Conducted by individual nations on different schedules, this primarily involves the conversion of analogue terrestrial television broadcasting infrastructure to digital terrestrial (DTT), a major benefit being extra frequencies on the radio spectrum and lower broadcasting costs, as well as improved viewing qualities for consumers.
Modern Family is an American family sitcom television series created by Christopher Lloyd and Steven Levitan for the American Broadcasting Company. It ran for 11 seasons, from September 23, 2009, to April 8, 2020. It follows the lives of three diverse family set-ups in suburban Los Angeles, linked by patriarch Jay Pritchett.
4K resolution refers to a horizontal display resolution of approximately 4,000 pixels. Digital television and digital cinematography commonly use several different 4K resolutions. In television and consumer media, 3840 × 2160 is the dominant 4K standard, whereas the movie projection industry uses 4096 × 2160.
JOEX-DTV, branded as TV Asahi, is a television station that is owned and operated by the TV Asahi Corporation subsidiary of certified broadcasting holding company TV Asahi Holdings Corporation, itself controlled by The Asahi Shimbun Company. The station serves as the flagship of the All-Nippon News Network and its studios are located in Roppongi, Minato, Tokyo.
References
- ↑ TV, First DIGITAL. "First Digital TV". .firstdigitalghana.com/. firstdigitalghana. Retrieved 1 June 2017.
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