The analog signal - a fairly common type of data. For its use special reception antennas, which receive signals from the radio or television towers. Its feature is that the reception quality depends on the antenna and the distance from the tower, which conveys signals. reception quality depends on the length and condition of the antenna.
What analog signal from the digital difference
The content of the article
- What analog signal from the digital difference
- Uninterrupted broadcast of TV better
- What television economical
- Mobility of TV better
How to distinguish the analog from digital TV? Digital signal - a kind of presentation of information through pre-coded data. Information entering the Receiver passes the encryption process information in binary code. The satellite antenna acts as a pass receiver, it has a scale range of reception frequencies because the data are not directly receives the analog type,which depends on the finding of a radius of the platform and through the satellites.
Decode the information and displays it on the screen of the device, which everyone knows as the tuner. signal into binary code encryption provides a marked improvement in his, and at the output we get the sound and HD-quality picture.
Analogue transmission unlike digital passes pretreatment at reception, which affects the image quality. Analog receivers are much cheaper digital, due to the fact that it is not necessary to buy extra equipment (TV tuners satellite antenna cable to hold the operator). The digital signal does not depend on the remoteness of the tower.
Uninterrupted broadcast of TV better
In addition, depending on the remoteness of the tower, from the analog signal, there is another fat drawback - the instability. This is due to the fact that radio waves are very susceptible to weather conditions. Whether storm or snow storm, the signal will be attenuated or noises occur.
Digital frequency band different extensive and stable reception / transmission. This is due to the fact that the information is held by the scheme vyshka-Antenna satellite-tuner. At the first stage it passes coded and sent to the satellite, where it is amplified and transmitted to the receiver, tuner and decrypted on-screen image is supplied with high quality. This scheme does not give a chance to lose the signal, which indicates its continuity.
The analog signal is unreliable because of the method of reception. Digital broadcasting provides a stable reception of the information, due to its constant gain.
What television economical
Analog broadcasting is very practical. To use it, you need only a TV and a whip antenna. In the market there are a lot of necessary antennas of different sizes and qualities, which are very cheap at the price.
Digital TV requires additional equipment, such as cable operators, satellite dish, tuner, internet and so on. D. No matter what method of signal reception you choose, it will affect your wallet more noticeable than its counterpart.
Analog television is quite cheap and does not require additional costs and maintenance fees. Digital broadcasting carries financial costs in the form of purchasing a tuner, install a satellite dish, or subscription fee to the operator.
Attention. In order to review the channels in a digital format, it is necessary that your TV supports this format. The TV should be to support DTS format, EDTV, HDTV.
Mobility of TV better
Television receivers can be bought in any market. They are cheap, have little sensitive antenna which operates only in the analog band. But it is a plus that you can watch your favorite channels, even far away from the TV, which provides good mobility. If there is a good signal of the TV tower you will be able to watch TV channels, which would not have been.
Digital broadcasting, having a high HD-quality, closely linked to the place of its installation. As for the reception of this signal must be connected to an additional device, noticeably affected his mobility. But some operators providing interactive television via the Internet, offering service packages to provide viewing of digital channels on mobile devices. It provides a view of the channel regardless of location.
Analog broadcasting provides mobility by accepting special receivers with antennas. Do not bite the price, but the signal is only away from the tower guaranteed. Digital TV to a greater extent depends on the wires and the Internet, and mobility is provided only for purchases special packets at digital TV operators.
That's at the reception of the digital image often falls apart into pixels and the picture is always there when receiving the analog signal is weak.
Whoever wrote this article is a very distant thing as a digital TV or an analog TV .In article refers to the reception of satellite TV only. But today introduced the so-called terrestrial digital TV, which is transmitted as an analog to televyshek and antennas, in principle, no different from analog TV antenna. The only thing what could be the difference, so it is that digital TV is transmitted at higher frequencies and the antenna will have a smaller size.
