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Digital Terrestrial Television
 

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Digital Terrestrial Television

One of the newest disciplines that have been currently introduced into the television transmission media is the Digital Terrestrial Television (DTT or DTTV), the application of this new technology offers many advantages and possibilities in comparison with the standard signal, for example: better image quality (high definition) and a greater sound quality, using systems such as the AC3.


But, what is Digital Terrestrial Television? It is a new technology based in the sending of data through packages, these are sent through broadcasters located on earth, but instead of sending electrical waves that are susceptible to many distortions which complicate the transmission, the sending of binary data is used, meaning: only some zeros and ones are sent; this is a great advantage, because the signal is much more impervious to any interference that might come, especially in urban areas. After receiving the signal, our decoder only has to transform it into an analog signal, which is why we always receive such a clear image and sound quality.
 

This kind of system makes that the storage of data or sound in a broadband to be greater, which makes it possible the remittance of more than one audio file for the same video or various subtitles to choose from. This was not possible with the analog system, because only one piece of data occupied a huge space in the broadband.

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One possible application of this advantage could be the electronic guide of programs that interprets the information of several broadcasters’ programs and shows them to the users, giving them the chance of programming the recording of shows, see their descriptions and choose a daily routine to zap.

Nowadays it is possible to enjoy from this signal, because there are several television networks that are emitting the digital signal, however, due to the fact that there is very few publicity about this new discipline and the governments are not promoting the digital signal that much, many of these networks rather retransmit the same programs been broadcasted through the analog signal, and others are limiting themselves to transmit videos, or are simply waiting for the promotion of this type of services.

If you are wondering what do you need in order to be able of receiving this signal or if you have to purchase a new television, well you do not; you only need a decoder, which is similar to a small rectangular box, which is in charge of changing the signal to an analogue one, so your television is able of retransmitting it.

To sum up, Digital Terrestrial Television is the future, because the analog signal will be removed, and it will be the only free television in a few years from now; however, the viewer is still insecure or is just not attracted by this new technology, this is mainly because of the limited amount of networks that are offering the digital signal, and also because very few companies are willing to create new networks without the security of having viewers; let’s just hope that the governments and the television networks start advertising more this service.


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