all have in recent years the DTT receiver gizmo, but few would know precisely define which is the TDT. I myself would be unable to explain without liarme over and over again, giving endless laps at the end to end lost. Digital Terrestrial Television is the transmission of moving images and sound recorded by a digital signal through a network of repeaters land.
are many advantages over analog TV, but most are usually two: improving the quality of both sound and image and signal compression .
As I said, the main advantage (we've all noticed) provided by the digital encoding is to improve the quality of picture and sound at the time of receipt. This is because both are digitally encoded. So when any signal distortion, thus affecting the quality of reception, this can be corrected by the receiver, which identifies the error and remedied. As a curiosity, contrary to what many think, we know that the digital signal is more resistant to interference. Both digital and analog signals are susceptible to electromagnetic and distorted by electric or magnetic fields or weather conditions. The difference, as we have said, lies in the way of encoding information. The digital encoding is logical algorithms to identify and correct errors.
The other advantage perhaps more conducive to communication companies. If you noticed (me at least I do) with television Analog only had a dozen channel zapping. Now the figure has risen significantly. This is due to the possibility of compressing the signal, which means that it requires less bandwidth for transmission. Therefore, more channels can be issued in the space formerly used by a . In addition, the extra space can be devoted to other uses (for example, television signals broadcast in high definition.
While we increase the supply of television channels through digital terrestrial television, let's take a quick look enterprises audiovisuals that have licenses granted by the Government to issue in digital.
currently are licensed to broadcast 6 media companies, as well as the public broadcaster. RTVE offer five channels of TV ( La 1, La 2, 24 hours, Clan and Teledeporte ). As regards private companies, Antena 3 de Televisión, Sogecable Telecinco Gestevisión already had permission to broadcast open analogue and digital grant also received. Antena 3 issues, in addition to the namesake channel, and Nova Neox. Gestevisión, plus Telecinco has The Seven channels, Fiction Factory, Cincoshop, Cuatro, CNN +, 40 Latino and Canal Club . The last four channels are incorporated in the "portfolio" of Gestevisión after the merger between this company and Sogecable.
The new companies entering the TV market have been Audiovisual Investment Manager The Sixth, with one channel open ( The Sixth ) and a payment ( Gol T ) Editorial Unit ( I 7, Sony TV and I see Store) and Management Company Net TV Television (TV Intereconomía and Disney Channel).
addition, each Autonomous Community regional channels are issued, whose licenses granted by the regional government of the day. In Valencia we have four channels ( Canal 9, Punt 2, 24 / 9, Popular TV and Las Provincias). Finally, there are also regional and local channels. In Elche have another four ( Tele 7 Elche, Learn English TV, Libertad Digital TV and Tele Elx ).
And how could it be otherwise, the licensing has not ceased to be accompanied by political controversy, as media firms have complained over recent years that governments are opposed to their ideology have prevented access to the shift to issue licenses its open signal. How could it be otherwise, we have up in the DTT policy ...
0 comments:
Post a Comment