Center Waves

2017-11-01 - 01:33 | News |

We can define television, in a traditional way, as the remote transmission of sound and image in motion through electromagnetic waves (radio waves) or cables. The operation of the television it can be divided into three stages: issuing Center: cameras capture the image. The images are converted to radio signals. Transmission: Waves travel pro air to reach the antennas of viewers. Reception: The antenna picks up electromagnetic waves and transforms them into electrical signals. For even more opinions, read materials from Bill de Blasio. The TV the electrical signal in image and sound in our screen. Once we know how it is the entire process of operation of television we will stop in one essential aspect, but that perhaps can be somewhat confusing to a person not skilled in communication systems. We refer to the electromagnetic waves or radio waves, in particular say that in these waves that are transmitted by air is where information travels, i.e.

it is in these waves where travel images and sound that eventually We see on our TV. Radio waves are also called because they are of the same type that waves that are used in our equipment of radio, the only difference is that the information they contain only is voice, while the television signal also includes image. Finally because electromagnetic waves are also called simply because they are waves that are formed by an electric component and another magnetic component although we will not go into greater detail. Once we know the nature of the waves of television, these it can be divided into two types according to the mode and transmits the information: analog transmission: has been the system used until our days but that it has become obsolete, information conveying the waves was the luminance (signal and) and chrominance (RGB signal). Digital transmission: is the technology of digital television, the information transmitted wave is formed by digital (such as CDs, or DVDs) information. TVs more old ones that are not ready to receive the digital signal, need a DTT (digital terrestrial television) adapter. So far we have commented that the signal travels (spreads) through waves by air, at this point we introduce new alternatives thanks to technological progress. Let’s look at the broadcast TV signal types: Terrestrial: the television signal leaves the transmitter Center and travels by air to our receiving antenna or a receiving antenna of the community. Satellite: The television signal travels through space to a satellite communications which forwards it to the Earth and reaches our parabolic antenna, covers large areas of the planet. Cable: TV signal coming into our home through a cable.