Television Features

Television is known as the receivers of video and sound signals, but we must also consider as television to the airwaves system and the input devices used from their origin to the present.

Its origin dates back to the year 1900, when a person named Constantin Perskyi when he was in the electricity congress that was held in paris France, established the abbreviation TV and the application of TV.

The word television derives from the mixture of the Greek "TV"(Far) and from Latin"view”(See or observe) and makes direct allusion to the telecommunication function (distant communication).

Television Features:

Story.- Television began at the end of the 19th century, with a rudimentary version and with the invention of the " Nipkow ”that in the 1870s began what eventually became television and its broadcast world.

Later the cathode ray tube was introduced and it was in operation from the end of the 19th century to the present day.

In 1911 in Russia it was possible to carry out the emission in cathode ray tubes (kinescope) giving room to progress television and later in the decade of the 20’s the current concept of TV.

Sign.- The television signal is radio, in this signal the images are decomposed into small squares that are disarranged, being broadcast via antennas and subsequently received in the decoder of the television set, where the system is rearranged and decides if it is white or black.

Later, color television was converted where different colors were used to obtain the image. There are a series of signs that may vary depending on the place or country which are:

• NTSC
• PAL
• SECAM

Black and white tv.- This is the initial television that obtained the basic colors, "black and white", and just as in the cinema, color was established on television later.

Color TV.- Color television is the invention that most revolutionized the television system, since a new infrastructure had to be made to be able to carry out this type of signals.

Initially it was John Logie Baird, who based on the trichromatic theory created by the physiologist Thomas Young created a transmitter of different colors, later in Mexico and the United States Guillermo Gonzales Camarena patented a system in which a device allowed him to separate the signals and transmit them in basic colors, “blue, white and Red.

Analog signal.- It was called a television analog signal that uses the NTSC, PAL and SECAM signals, this signal operated in the world for more than 50 years, where live programs or video recordings were broadcast scheduled.

Digital television.- Digital television is the most recent, it has a very high definition and, due to the type of signal, a decoder or a television adapted to the same system is required.

International conventions have been held with which an agreement has been reached to carry out the called “analog blackout” that will give way to the digital signal throughout the world, both in radio and in TV.

Television industry.- Television immediately became the fastest and most widely disseminated means of communication in the world, this allowed those who had such issuers to obtain a higher income and control over the information issued.

Earnings were initially very small, but prices rose until they reached stratospheric costs, which turned the broadcasters into economic, political and social.

Initially the television stations carried out live broadcasts but today they are basically based on previously recorded programs and the broadcast programs are guided to the bustle and the spectacle because although television at one point became an example to continue and in an educational environment, today it has been displaced by the internet, where you can choose what you want or should watch.

PayTV.- Later the pay television stations that used satellites to share information came out; In Europe, this became general when Eurovision was created, where televisions were associated and transmitted via microwaves, but television stations offered their private services creating cable television, which contained more selected programming, less commercial and gave a status to its subscribers.

Pay television has decreased in its use in recent years and it is only live events, real-time broadcasts of sporting events, news or similar with which you continue to maintain audience. This did not prevent these industries from venturing into other types of emissions such as the internet and telephony industry, which continue Nowadays in greater boom and personal devices are required that are cheaper and more modern than those of simple television or digital.

Social state.- Television initially became a status and a form of family reunion, the programs were few, sparse and mostly live. Later it became a means of diffusion of events such as sports, tutorials, classes, series, cartoons or comedies; finally television has been maintained today with reality shows, which attract the attention of users.

Television left its social status when televisions were sold and cheaper, which allows the user not only to have one television but several televisions. Today the status can be established in the size and type of television as well as accessories and devices.

Devices.- Television sets were initially very large, expensive and difficult to manufacture. Despite being a simpler signal, televisions had to be adjusted by hand, both for the oscillators and for voltages and intensities. This made these technicians in the beginning highly sought after and very well paid.

The devices were improving along with the technology, and from being made with bulbs they went to transistors that could greatly reduce the size and cost of the devices.

In third place began the digital technology that nowadays makes it possible to make lcd (liquid crystal display), plasma and television televisions. led, and that although they are made with so-called rare earths, their production cost is much lower and therefore they are more expensive to acquire. economical.