The Baird "Televisor" (sold in 1930–1933 in the UK) is considered the first mass-produced television, selling about a thousand units. The earliest commercially made televisions were radios with the addition of a television device consisting of a neon tube behind a mechanically spinning disk with a spiral of apertures that produced a red postage-stamp size image, enlarged to twice that size by a magnifying glass. Mechanical televisions were commercially sold from 1928 to 1934 in the United Kingdom, France, the United States, and the Soviet Union. Main article: History of television Early television RCA 630-TS, the first mass-produced electronic television set, which sold in 1946–1947 Starting in the late 2010s, most flat panel TVs began to offer 4K and 8K resolutions. Modern flat panel TVs are typically capable of high-definition display (720p, 1080i, 1080p, 4K, 8K) and can also play content from a USB device. By the early 2010s, flat-panel television incorporating liquid-crystal display (LCD) technology, especially LED-backlit LCD technology, largely replaced CRT and other display technologies. Timex Sinclair 1000) and dedicated video game consoles (e.g. It has been used as a display device since the first generation of home computers (e.g. The ubiquitous television set became the display device for the first recorded media for consumer use in the 1970s, such as Betamax, VHS these were later succeeded by DVD. The addition of color to broadcast television after 1953 further increased the popularity of television sets in the 1960s, and an outdoor antenna became a common feature of suburban homes. Introduced in the late 1920s in mechanical form, television sets became a popular consumer product after World War II in electronic form, using cathode ray tube (CRT) technology. For other uses, see Television set (disambiguation).Ī television set or television receiver, more commonly called the television, TV, TV set, telly, tele, or tube, is a large device that combines a tuner, display, and loudspeakers, for the purpose of viewing and hearing television broadcasts, or as a computer monitor. The small satellite "dishes" offered for home reception receive digitally-encoded television signals.ĪTV will not be compatible with current analog receivers, but it will be phased in gradually in a carefullyconsidered plan that will allow older analog receivers to retire gracefully over time."TV set" redirects here. Satellite relays have relayed TV as digitally compressed signals to maximize the utilization of the expensive transponder equipment in orbit. TV audiences have been viewing images processed digitally in this way for years, but the final product has been converted to a wasteful analog signal before it leaves the television transmitter. The resulting picture looks to be as normal as the pictures seen for years, but many more images can be transmitted within the same band of frequencies. A digital TV system can update only the information that has changed since the last frame. Most TV frames are filled with information that has not changed from the previous frame. In addition to sharper pictures with less noise, a digital system can be much more frugal in the use of spectrum space. Digitally processed TV offers several tremendous advantages over analog TV methods. ATV is a digital-television system, where the aspects that produce the image are processed as computer-like data. Television technology is rapidly moving toward the ATV digital system planned to replace the aging analog process. The release of ultraviolet photons causes a reaction with phosphor material, which then glows.ĪTV stands for advanced television, the television system expected to replace the current system in the United States. ![]() This bumping releases a form of energy called a photon. When an electrical signal encounters plasma, the added energy starts a process where the particles bump into one another. Plasma consists of electrically charged atoms (ions) and electrons (negative in charge). Each fluorescent light contains a gas called plasma. Red, green, and blue fluorescent lights enable a spectrum of colors to be produced, in much the same way as with conventional television. In a plasma television, fluorescent lights are present instead of phosphors. This allows the screen to be hung from a wall. Typically televisions screens are about 6 in (15 cm) thick. Plasma televisions do not have a cathode ray tube. As with other technologies, however, refinements over time will drive down the price into the affordable range for many people. It is currently expensive, and as so is not yet popular. Plasma television has been available commercially since the late 1990s.
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