In 1928, grid broadcasting began to develop. This was the point at which the history of television began. For many years, scientists worked on improving the electron-beam tubes, improving the image transmission and increasing the screen surface. The story ended with the creation of digital television. Digital made the electron-beam kinescope unnecessary. Digital transmits images through coding and is transmitted via special channels or the Internet.
At the beginning of its development, television cameras transmitted only black and white images. This situation remained until 1950. Then television receivers acquired the ability to receive color. The standards of color image transmission appeared:
SECAM and
NTSC are still used in some countries today.
Nowadays, television was divided into channels. And some of them are only offered to the viewer for a fee. The average statistic for the world of paid channels is approximately 30%.
Depending on the method of transmission, television broadcasting is divided into:
terrestrial – receiving the television signal through antennas and towers (this method of transmission is widespread in some countries),
Cable where the signal is transmitted through a cable connected to the receiver,
Satellite – signals pass through a satellite and are picked up by set-top boxes connected to the receiver through special dishes,
Internet broadcasting.
Digital
You can name several options for transmitting images in digital:
cable,
satellite,
terrestrial.
New technologies make it possible to receive a picture with increased clarity. Encoding is carried out according to several world standards:
European,
Japanese,
American.
The main advantages of digital broadcasting are the low level of interference when transmitting signals. The number of channels transmitted on one frequency can be significantly increased. Sound and image have excellent quality, better compared to cable channels. Digital makes it possible to communicate with the viewer online. The viewer is able to choose when and which programs he/she wants to watch or order programs related to specific content. Digital television is capable of transmitting additional information beyond television programs.
Today the world is rapidly replacing analog broadcasting with digital broadcasting. In our country today two types of signal are already being transmitted. The number of analog channels will gradually decrease. Gradually, when televisions capable of transmitting analog are a thing of the past, analog channels will cease to be broadcast.
Internet
Today, every major channel has an Internet broadcast. It allows you to set up enhanced features compared to conventional broadcasting. Viewers:
Can participate in programs and shows,
leave comments,
make a request.
Internet broadcasting allows you to involve viewers in the process of creating programs. Viewers can vote, ask questions of any program character. The broadcasting grid is a thing of the past. Each viewer chooses and watches only the programs he or she likes best.
The form of presenting information is changing. Television is being integrated with the electronic media. Television will soon become not only a content transmitter, but also a multifunctional apparatus.
Types of Television Broadcasting
In general terms, the history of television in brief is – the search for new ways to transmit information. The struggle for viewers leads countries to create new types of television programs. Modern television content is conventionally divided into:
entertainment,
newscasts,
educational,
socially stimulating.
Television for the majority of the population is a way to decorate the leisure time and spend their free time. Therefore, channels offer a variety of entertainment programs aimed at different groups of the population.
Entertainment programs, which viewers love, these days most channels combine with informing the population and conducting propaganda activities. Information and entertainment blocks gather a huge number of viewers.
Educational programs are designed to deepen and expand the knowledge of the population on various issues. They carry a lot of necessary information of general educational and worldly nature.
Socially-activating programs are designed to mobilize the population and involve it in socially significant activities.