Digital TV: this time the going gets tough after years of claims, more or less extensive trials and political controversy . The TV has decided to become fully digital and back from 12/12/2012 will not be able to return. In our country the digitalization of the sector began in 1996 with the launch of the satellite version of Telepiù. The first offering was made up of some channels and a monthly bill for very poor families.
The next D + bouquet offered by the management of the French Canal +, operating in Italy with a sign Tele +, lowered prices and technological difficulties related to the installation of the satellite dish and decoder. Mediaset has been, thanks to a series of laws to facilitate the testing of the Digital Earth, to pull the sprint to the transition from analogue to digital. But not only that today is also about mobile TV with DVB-H, IPTV and with the Internet industry. Come on to analyze what is needed to address the so-called switch-off and watch programs broadcast over the air DVB-T and satellite services.
beginning is all ok
no need to change your TV: the old can be used for years, just add an external receiver can decode the digital signal and transfer it to the unit. For those who must, instead, a new TV set, there are alternatives for some time already since most of color TV in the market is also equipped with a digital tuner. The question of the reception, however, opens a series of talks related to the quality of the digital signal.
We often hear: "With the digital image quality and improves the signal is more stable." However, while the analog signal degrades continuously and, although a highly disturbed, however, presents a content at least partly comprehensible to the viewer, the digital signal over a certain threshold of disorder becomes indecipherable and lose any information. In other words: with the analogue TV could be seen even in areas with a weak and noisy signal, with the Digital Earth there is no middle ground. That's why the transition is necessarily slow: you have to ensure that the user base analog television will continue to watch TV channels with the new technology.
many advantages, some inconvenience
What, then, the benefits of Digital TV? The improvement in the frequency of a single television channel can transmit at least four digital channels in place of an analog. The Digital Earth, because it uses 100% of the available transmission bandwidth, introduces a new standard for getting new interactive services. A sort of mini-computer at your disposal to stay up to date with the latest news, information about programming or real social utility services.
A wheel of the benefits of Digital TV, however, come what may now be perceived as disadvantages compared to the analog environment. We already said that for the normal viewer is required to purchase new equipment designed to receive digital signals. In addition to cost, this is also a practical difficulty for people who, like many elderly, are not familiar with the technology: the use of a new television set may require a change of habits and the use of a decoder also implies a remote control anymore. In addition to televisions, in general, any device to receive television channels such as VCRs to the user yet, and TV cards for computers, must have an external receiver or be replaced.
Better check the house antenna
In addition to the decoder must then consider the costs associated with the adjustment of some antenna installations. For centralized systems are expected to need repairs, adjusting at least 20-30% of cases. To meet the viewer, the State will implement incentives to minimize, if not cancel, the costs of switching from analog to digital television. The issue that most worries the audience is bound to the system antenna to receive digital terrestrial without problems.
70% of the facilities already present in Italy should, of conditional obligation, to be able to receive signals, as the system is the same used in before and therefore already present in all homes. Some situations, particularly obsolete, it could request a review. Things are bound to change: If the analog signal is amplified a little, you get an acceptable analog signal, but if you amplify a little digital signal does not get anything. In an emergency you can also use a portable antenna exclusively for the Digital TV decoder, but it would be better right now to schedule a check of the existing plant, to understand how to adapt to the new digital signals.
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