In its early stages of development, LIVESTREAM television employed a combination of optical, mechanical and electronic technologies to capture, transmit and display a visual image. By the late 1920s, however, those employing only optical and electronic technologies were being explored. All modern television systems relied on the latter, although the knowledge gained from the work on electromechanical systems was crucial in the development of fully electronic television.
The first images transmitted electrically were sent by early mechanical fax machines, including the pantelegraph, developed in the late nineteenth century. The concept of electrically powered transmission of television images in motion was first sketched in 1878 as the telephonoscope, shortly after the invention of the telephone. At the time, it was imagined by early science fiction authors, that someday that light could be transmitted over copper wires, as sounds were.
The idea of using scanning to transmit images was put to actual practical use in 1881 in the pantelegraph, through the use of a pendulum-based scanning mechanism. From this period forward, scanning in one form or another has been used in nearly every image transmission technology to date, including television. This is the concept of "rasterization", the process of converting a visual image into a stream of electrical pulses.
In 1884, Paul Gottlieb Nipkow, a 23-year-old university student in Germany, patented the first electromechanical television system which employed a scanning disk, a spinning disk with a series of holes spiraling toward the center, for rasterization. The holes were spaced at equal angular intervals such that, in a single rotation, the disk would allow light to pass through each hole and onto a light-sensitive selenium sensor which produced the electrical pulses. As an image was focused on the rotating disk, each hole captured a horizontal "slice" of the whole image.
Nipkow's design would not be practical until advances in amplifier tube technology became available. Later designs would use a rotating mirror-drum scanner to capture the image and a cathode ray tube (CRT) as a display device, but moving images were still not possible, due to the poor sensitivity of the selenium sensors. In 1907, Russian scientist Boris Rosing became the first inventor to use a CRT in the receiver of an experimental television system. He used mirror-drum scanning to transmit simple geometric shapes to the CRT.
Using a Nipkow disk, Scottish inventor John Logie Baird succeeded in demonstrating the transmission of moving silhouette images in London in 1925, and of moving, monochromatic images in 1926. Baird's scanning disk produced an image of 30 lines resolution, just enough to discern a human face, from a double spiral of Photographic lenses. This demonstration by Baird is generally agreed to be the world's first true demonstration of television, albeit a mechanical form of television no longer in use. Remarkably, in 1927, Baird also invented the world's first video recording system, "Phonovision": by modulating the output signal of his TV camera down to the audio range, he was able to capture the signal on a 10-inch wax audio disc using conventional audio recording technology. A handful of Baird's 'Phonovision' recordings survive and these were finally decoded and rendered into viewable images in the 1990s using modern digital signal-processing technology.
In 1926, Hungarian engineer Kálmán Tihanyi designed a television system utilizing fully electronic scanning and display elements, and employing the principle of "charge storage" within the scanning (or "camera") tube.
On 25 December 1926, Kenjiro Takayanagi demonstrated a television system with a 40-line resolution that employed a CRT display at Hamamatsu Industrial High School in Japan. This was the first working example of a fully electronic television receiver. Takayanagi did not apply for a patent. By 1927, Russian inventor Léon Theremin developed a mirror-drum-based television system which used interlacing to achieve an image resolution of 100 lines.
In 1927, Philo Farnsworth made the world's first working television system with electronic scanning of both the pickup and display devices, which he first demonstrated to the press on 1 September 1928.
WRGB claims to be the world's oldest television station, tracing its roots to an experimental station founded on 13 January 1928, broadcasting from the General Electric factory in Schenectady, NY, under the call letters W2XB. It was popularly known as "WGY Television" after its sister radio station. Later in 1928, General Electric started a second facility, this one in New York City, which had the call letters W2XBS, and which today is known as WNBC. The two stations were experimental in nature and had no regular programming, as receivers were operated by engineers within the company. The image of a Felix the Cat doll, rotating on a turntable, was broadcast for 2 hours every day for several years, as new technology was being tested by the engineers.At the Berlin Radio Show in August 1931, Manfred von Ardenne gave the world's first public demonstration of a television system using a cathode ray tube for both transmission and reception. The world's first electronically scanned television service then started in Berlin in 1935. In August 1936, the Olympic Games in Berlin were carried by cable to television stations in Berlin and Leipzig where the public could view the games live. In 1935, the German firm of Fernseh A.G. and the United States firm Farnsworth Television owned by Philo Farnsworth signed an agreement to exchange their television patents and technology to speed development of television transmitters and stations in their respective countries.On 2 November 1936, the BBC began transmitting the world's first public regular high-definition service from the Victorian Alexandra Palace in north London. It therefore claims to be the birthplace of television broadcasting as we know it today. In 1936, Kálmán Tihanyi described the principle of plasma display, the first flat panel display system. Mexican inventor Guillermo González Camarena also played an important role in early television. His experiments with television (known as telectroescopía at first) began in 1931 and led to a patent for the "trichromatic field sequential system" color television in 1940. Although television became more familiar in the United States with the general public at the 1939 World's Fair, the outbreak of World War II prevented it from being manufactured on a large scale until after the end of the war. True regular commercial television network programming did not begin in the U.S. until 1948. During that year, legendary conductor Arturo Toscanini made his first of ten TV appearances conducting the NBC Symphony Orchestra, and Texaco Star Theater, starring comedian Milton Berle, became television's first gigantic hit show. Since the 1950s, television has been the main medium for molding public opinion.
Amateur television (ham TV or ATV) was developed for non-commercial experimentation, pleasure and public service events by amateur radio operators. Ham TV stations were on the air in many cities before commercial TV stations came on the air. In 2012, it was reported that television revenue was growing faster than film for major media companies. LIVESTREAM ONLINE TV.
Eurosport is a pan-European television sport network operated by French broadcaster TF1 Group. The network of channels are available in 59 countries, in 20 different languages providing viewers with European and international sporting events.
Eurosport provides viewers with European and international sporting events. This includes: UEFA Champions League, UEFA Cup football, the Paris Dakar Rally, Monte Carlo Rally, the Olympics, cycling events such as the Tour de France, tennis events including the French Open and the Sony Ericsson WTA Tour, World Championship Snooker, ICC World Twenty20, ICC Cricket World Cup, ICC Champions Trophy, Australian Football League, wintersports, and youth sports like skating and surfing. It has also previously covered events such as the UEFA Cup Winners' Cup.
Eurosport is a partner with KSO, the organizers of the FIA World Touring Car Championship (WTCC). Eurosport broadcasts every WTCC race live. Before 2006, both the WTCC and the FIA GT Championship are broadcast by Eurosport. But Eurosport requested SRO, the FIA GT Championship organizers, to shorten their race from 3 hours to 2 hours. SRO refused and since then it has not been on the bill with the WTCC. For 2007, the SRO shortened FIA GT Championship races to 2 hours.
The channel is also involved in the Intercontinental Rally Challenge a rival rallying series to the World Rally Championship. Since 2008, Eurosport has also been broadcasting the annual 24 Hours of Le Mans.
WHAT DO YOU KNOW ABOUT RUGBY?
Rugby league football, usually called rugby league, is a full contact sport played by two teams of thirteen players on a rectangular grass field. One of the two codes of rugby football, it originated in England in 1895 as a split from the Rugby Football Union over the issue of payments to players. Its rules gradually changed with the purpose of producing a faster, more entertaining game for spectators. It is frequently cited as the toughest, most physically demanding of team sports.
In rugby league points are scored by carrying or kicking the ball down the field, until it can be moved past the opponents' designated goal line and touched to the ground; this is called a try, and is the primary method of scoring. The opposing team attempts to stop the attacking side gaining points by preventing their progress up the field by tackling the player carrying the ball. In addition to tries, points can be scored by kicking goals. After each touchdown, the scoring team gains a free kick to try at goal with a conversion for further points. Kicks at goal may also be awarded for penalties, and field goals can be attempted at any time during general play.
The objective in rugby league is to score more points through tries, goals (also known as conversions) and field goals (also known as drop goals) than the opposition within the 80 minutes of play. If after two halves of play, each consisting of forty minutes, the two teams are drawing, a draw may be declared, or the game may enter extra time under the golden point rule, depending on the relevant competition's format.
The try is the most common form of scoring, and a team will usually attempt to score one by running and kicking the ball further upfield, or passing from player-to-player in order to manoeuvre around the opposition's defence. A try involves touching the ball to the ground on or beyond the defending team's goal-line and is worth four points. A goal is worth two points and may be gained from a conversion or a penalty. A field goal, or drop goal, is only worth one point and is gained by dropping and then kicking the ball on the half volley between the uprights in open play.
Field position is crucial in rugby league, achieved by running with or kicking the ball. Passing in rugby league may only be in a backward or sideways direction. Teammates therefore have to remain on-side by not moving ahead of the player with the ball. However the ball may be kicked ahead for teammates, but again, if they are in front of the kicker they are deemed off-side. Tackling is a key component of rugby league play. Only the player holding the football may be tackled. A tackle is completed when that player's progress is halted, or he is put to ground. An attacking team gets a maximum of six tackles to progress up the field before possession is changed over. Ball control is also important in rugby league, as a fumble of the ball on the ground forces a handover, unless the ball is fumbled backwards.The ball can also be turned over by going over the sideline.