High quality TV Signal offered by the Digital TV

The world begins to speak about digital television for the first time in 1980. At this time the U.S. market starts to offer satellite services, including radio and television directly from satellites in space. A few years later appeared the first European commercial satellite (Astra 1A), which broadcasted several television channels.





Essentially, digital TV means TV signal that is broadcasted, translated and adopted entirely in digital form. From the moment when the TV signal is generated to the moment of its adoption by TV decoders, it does not convert into analog signal. Yet the first satellites that broadcast satellite TV and radio channels used an analogue signal for transmission of data but when the technology started to develop, they were transmitted in digital form only.





HDTV (high Definition Television) is a digital standard for broadcasting and adoption of television channels. It features high-resolution picture and more specific requirements for television receivers. The standard was put in 2003 and in mid-2005 the first receivers that met the requirements of this technology occurred.





As long-term users of analog TV we know that we do not always get high-quality TV signal from our receivers. Sometimes the channels disappear and sometimes the whole channels are dotted with white spots. Due to the technical nature of digital signal of the digital TV, this signal is either perfect or is completely missing, i. e. the received picture and sound are in any case without interference.





The transmission of digital TV signals to the receiver can be done in several ways-terrestrial (DVB-T), satellite (DVB-S) and cable (DVB-C). DVB (Digital Video Broadcasting) is actually a range of approaches using the latest technologies for audio and video. The difference between them lies in the type of modulation. The most common compression in this case is the MPEG-2.





In fact, thanks to coding the TV signal in digital form, the requirements of broadcasted TV signal to the available bandwidth of the transmission environment can be precisely regulated. For example, with the coaxial cable can be broadcasted at least 20 times more digital channels than with the analog transmission. Besides the more little requirements to the transmission environment, digital television also provides an extra that can be only a mirage for analog TV. That feature is called interactivity and actually allows the subscribers themselves decide what, how and when to watch. Among the most popular services of this kind is the so-called "Video on Demand"-if you pay a certain amount of money, you will be able to watch films and channels you wish. This is actually done via remote control. It is true that the "video on demand" service can make excessive the current rentals.





As you can see the digital TV has much more advantages than the common analog TV, because of the high-quality TV signal and the other extras it offers.





If you too want HD TV signal, please visit this resourceful Danish website. You can use Google Translate to understand it better. To see how you can set up your TV signal on your computer, read this interesting article.