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the tv
Con la invención del Disco de Nipkow de Paul Nipkow, se hace el primer gran avance para hacer de la televisión un medio comunicacional relevante. -
the moving image
The moving image is what characterizes the television. The first developments were made by the French Rionoux and Fournier in 1906. -
the color tv
As far back as 1928, experiments in the transmission of color images were developed. John Logie Baird, based on the trichromatic theory of the physiologist Thomas Young, performed experiments with Nipkow discs covering the holes with red, green and blue filters, making the first color images emitted on July 3, 1928. August 1940, the Mexican Guillermo González Camarena patents, in Mexico and the United States, a Sequential Field Trichromatic System. -
In the sender, the iconoscope
In 1931 Vladimir Zvorykin, after visiting the laboratories of Philo Taylor Farnsworth, developed the electronic pickup that was widely expected, the iconoscope. This electronic tube allowed the abandonment of all the other systems that were being used and it continued, with its modifications, until the irruption of the sensors of CCD's at the end of the XX century. -
electronic tv
In 1937 regular electronic TV broadcasts began in France and the United Kingdom. This led to a rapid development of the television industry and a rapid increase in viewers, although televisions were small screen and very expensive. These emissions were made possible by the development of the elements at each end of the chain, the image tube (cathode ray tube) in the receiving part and the iconoscope in the initial part. -
the transduced signal
The transduced signal of the image contains the information of the image, but as we have seen, it is necessary, for its recomposition, that there is a perfect synchronism between the scanning deflection and the deflection in the representation. -
The high definition "HD"
28 different HDTV systems have been developed. There are differences in relation to frames, number of lines and pixels and shape of sweep. All of them can be grouped into four large groups of which two have already become obsolete -
Digitization
At the end of the decade of 1980 began to develop systems of digitization. Digitization on television has two distinct parts. On one side is the digitalization of production and on the other the transmission. -
Mechanical television, the Nipkow disc and the phonic wheel
In 1884 Paul Nipkow designs and patents the so-called Nipkow disc, a television project that could not be put into practice. In 1910, the Nipkow disc was used in the development of television systems of the early twentieth century and in 1925, on 25 March, the Scottish inventor John Logie Baird made the first real experience using two discs, one in the Emitter and other in the receiver, which were attached to the same axis so that their rotation was synchronous and separated by 2 m.