Презентация "Телевидение"

The History of Television

Stand with the TVs at IFA 2010

What is the TV?

TV — technology of telecommunication is designed to transmit to a distance of a moving image. In most cases, simultaneously with the image of the transmitted sound. Commonly, the term is also used for the generalized designations of organizations involved in the production and distribution of television programs. Since the second half of the twentieth century, the television has become the most influential mass medium, suitable for entertainment, education, news and advertising.

Who invented TV?

• Color TV «Ruby»

In ancient times people tried to convey a certain image that is confirmed by numerous legends and myths. The technical platform for such action appeared only in the late 19th century.

The first device for mechanical television was invented in 1884 by Paul Nipkow, a German scientist and inventor. But in 1906, just two scientists Page and Max Diekmann officially registered an innovation patent (the tube is brown), which could transmit the image at a distance. In 1907 Diekmann showed the first television receiver.

Significant progress in this direction has made the Soviet Professor Boris Rosing. He in 1907, personally demonstrated the reception and play of geometric shapes in a static position on the screen. In 1908 Hovhannes Adamian, inventor of Armenia, was able to patent a new device that could transmit a signal in two colors.

A huge breakthrough has made Vladimir Zworykin, a devoted student of Rosing. He in 1931 implemented electronic pickup tube. Then the world began to develop electronic television.

In color television appeared in the United States in 1953 after the establishment of the NTSC system. These TVs were very expensive. But gradually they began to fill the homes of residents of the United States.

Broadcasting technology

The types of television have a Long history of development of television has led to the fact that there are numerous kinds of it. First, it is divided into black ,white and color. Until 1950 all the TV showed only black-and-white picture. Two standard color television: NTSC and SECAM - are all over the world so far. Also TV can be divided into paid and free. In each country there is a set of channels that can watch anyone with a TV. But there are also channels, whose signal can be seen only for the money. Forms of payment may be different, but the proportion that is steadily kept on the figure of 30% of the total market. According to the method of transmission of the signal TV can be divided into: essential, in this case, the receiver receives the signal from the television tower, it is the most familiar and common method of broadcasting; cable, in this case, the signal goes from the transmitter cable attached to the TV satellite signal is transmitted from the satellite and captured a special antenna, which transmits the image on to a special console connected to the TV; Internet TV, in this case, the signal is transmitted through the Network. According to the method of coding TV is divided into analog and digital. The second has a higher quality due to the latest encoding standards and transmission.

The emergence of television is the third breakthrough, after the establishment of cinema in the late 19 th (the nineteenth)century and the invention of synchronous sound in a period of 20-30 years(twenty to thirty) of the 20th century. So then there are Stereoscopic television is a TV system that provides the creating in the viewer the impression of depth and volume of observed images. Three-dimensional perception based on binocular vision. With the invention of television was a powerful shift in human consciousness, humanity has opened up enormous opportunities. Through television you can clearly and explicitly to teach lessons on a variety of science, art and technology and to raise the level of education, to expand knowledge and worldview.

And remember that “World television day" is celebrated annually on November 21

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