Friday, March 19, 2010

Television History

Early development
Shares many of the scientists in the development of television, and we can not identify a particular person as the inventor of the TV. It has become a TV possible in the nineteenth century, when people learn how to send signals through the air communication mediated by electromagnetic waves, and this process is called a wireless connection.
Send wireless operators first symbolic signals through the air. By the early twentieth century, wireless operators are able to send words. At the same time many scientists conducted experiments include sending pictures. In 1884, invented by Paul Gottlieb Nbekov from Germany, a survey was able to send images over short distances, and its function automatically and not electronically, as is the case now. In 1922, Philo Farnsworth developed by the United States system scan electronically. In 1926, inventor John Baird, a Scottish engineer system TV infrared, to capture images in the dark. Vladimir Zworykin invented, a Russian-born American scientist live television camera stored ¸ Alieconoscob * as well as the valve is Elkinscob in 1923 and was the first valve Alieconoscob camera Tlvasip appropriate for broadcast. And is Elkinscob valve is used in television receivers. The display Zworykin first practical electronic TV system in full in 1929.The beginning of the broadcast
Was taken from the experiences of many broadcast television in the late twenties and thirties, and the BBC in Britain, the two companies CBS and National Public Radio in the United States is the leading broadcast television experience. The BBC began the first service Tlvasip public in 1936, and it broadcasts from Alexandra Palace in London. In 1936, the company has developed a wireless America (later RSA), which owns the National Broadcasting Company NBC receivers in the 150 houses in New York City. The station began New York, a subsidiary of National Public Radio first broadcast a television pilot for such homes. It was the first program of its animation. Company has started the first National Public Radio broadcast a television regular in the United States in 1939.
Resumed television broadcasts in Britain and the United States after World War II (1939-1945). In the beginning it was broadcasting a pilot, and a few people have televisions. By 1951, television broadcasts covered the United States from east to west, and people were fascinated by television. In the fifties been an enormous increase in the use of television in Western countries. The TV service in the UK and even one in 1955, when it began operation of a network television commercial. Australia opened the first national and commercial stations in Sydney and Melbourne in 1956, and began to Irish television in 1961. In the sixties the evolution of television has become more rapid; with the introduction of color television in several countries. The BBC began broadcasting regular colored in 1966, the second channel.First programs
Performances were fun movies and the American West more popular programs in the fifties. And programs have become competitions, with prize money big favorite programs on commercial stations. Attracted drama serials such as Coronation Street British millions of viewers. This was in 1960, and still attracts a huge number of viewers in the nineties.
By the eighties solved Series Crime Films replace the American West as the most popular soap operas. The exposure of many TV stations talk shows and competitions, and fun, and sports programs.Sixties
With programs that popular entertainment has been the main part of the television programs during the sixties, the planners television covered the increase in events such as political meetings, ceremonies and funerals of important figures, and Royal weddings. It was a series of debates in 1960 between the candidates to the presidency of the United States John F. Kennedy and Richard Nixon, a milestone in the television broadcast. Many believe that these debates have significantly contributed to Kennedy's victory in the elections of the presidency of the United States in 1960. And soon realized the political importance of television to present themselves and the political messages to voters.
Television regularly displays scenes of wars and natural disasters and famine. I have called the Vietnam War in the sixties and seventies as the first television war was their respective fields, have also received civil rights protests in the United States and Western Europe, and South Africa to cover Tlvasip appropriate.Technical progress
Helped the progress made during the fifties and sixties to improve the technical quality of broadcast television. In the early days of TV screens most of the diameter was either 18 or 25 cm. But now, it has become the screens with a diameter 53.64 cm, commonly used. In the seventies gave manufacturers Projecting television systems that offer programs on large screens up to two meters in diameter. There are small TVs can be placed in the pocket silver screen has a diameter of about 7,5 cm. These devices are used for valves, cathode ray image formation Pravda. In some models see the screen phosphorus through a side window in the LED, which provides a compact design. The screens are currently available liquid crystals are similar to laptop screens and two types of colored normal. And give these screens images of relatively poor, but the advantage of being compact and you need to electric power is low. [1]
Improvements in the broadcast equipment and receivers to obtain clearer images than was possible in the past. In the early days, all programs offer non-colored. And began to color television in most countries during the fifties, but now most of the programs show how color. In most industrialized countries there is more than 90% of the houses a color TV.
Most television broadcasts in the first direct broadcast programs on the air or taken from the movies. The films need time to show. As the devices and techniques used to produce images and sound quality is good. And began to record programs on video cassettes in the mid-fifties, and thus became the registry on the method of production of these tapes is essential. And can be run immediately after the video recording. It produces images and sounds of high quality, and allows flexibility in scheduling programs. After that scientists have developed equipment and techniques that have improved the quality of film screenings.
Launched the first satellite for commercial communications in 1965, and I have made satellite television broadcasts worldwide. Can viewers all over the world right now to see events like the Olympics as they happen. See: communications satellite.Recent developments
Continued television and essential means of entertainment, as has its role in the coverage of important events, for example, in 1973 abolished the television networks of America of their regular programs to broadcast meetings of the Watergate special investigations of the U.S. Senate on illegal practices during the presidential campaign in 1972.
In the early years of television in the United States, broadcasters avoid controversial topics such as abortion, divorce, drug abuse, and political satirist, and sex. Was feared that the harm these issues for some viewers. But in the late sixties broadcasters found that Americans can address these issues without many objections. Criticized American Drama ¸ * MASH, which aired in the seventies and early eighties wars. The program addressed highly successful neighbors who produced in Australia, drug problems and AIDS, also addressed the residents of the eastern end of the program of the problems of the inner city population to the content of crime and poor family relations, and racism.
Some people believe that television has gone too far in the presentation of controversial topics. As are scenes of violence and sex are presented in the television sets in Western countries on television for much criticism. In Britain, the Council was established normative standards for radio in 1988, to set limits of decency and moral literature and identifies guidelines for software makers.
Broadcast began in the late seventies display a growing number of films specifically designed for TV serials and tragic short, and other special programs. Among the series, which had been successful series Roots, a drama made up of eight sections explore the history of black American family from slavery to freedom. In the eighties display a number of Indian television serials Indian tragedy, including the popular serial-e, who introduced the Indian family life in seven decades.
During the eighties video devices became available for home use. And enables viewers to rent or buy movies before recording, and enjoy to see it in their homes. In the eighties also increased the use of satellites in the transfer of TV programs to cable television subscribers. It receives some viewers live television signals emitted from the satellite using a large antenna dish is called, and so began some cable systems in the mixing Referring to prevent owners of dishes to receive programs without paying subscription fees. And give cable television companies for subscribers who have a dish receiver equipment, to enable them to receive programs.
By the early nineties, it became apparent that a high-definition television is the next advancement in the technology of television.

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