Digital Television

Digital Television is an advanced broadcasting technology that has transformed the television viewing experience. DTV enables broadcasters to offer television with better picture and sound quality, and multiple channels of programing. Digital television can be regarded as an innovative advance that represents the first significant evolution in television technology since color television in the 1950s (Kruger 2002).
The development of digital television (DTV) is closely related to the availability of inexpensive high performance computers, therefore it only became a real possibility in the 1990s and has been made popular among common audience since the late 2000s (Brenton 2018). Unlike cable and satellite television which uses analog signals to carry audios and videos, digital television uses digital encoding to transmit television signals (Kruger and Peter 2002). Apart from transmitting signals in different forms, DTV has many advantages over analog television.
First, Digital TV signals are much more compact than analog signals. It can make more economical use of scarce radio spectrum space. By transmitting multiple channels in the same bandwidth occupied by a single channel of analog television, DTV can provide audience with more channels.
Second, digital tuners remove any interference from the TV signals before converting them into the pictures and sounds, which means that there is no distortion like "static" or "snow" on the picture and audience can enjoy high-quality images without interference.
Third, Digital TV permits wider "letterbox" style image screens, meaning when audience watching programs on TV sets the television viewing experience will be similar to watching movies on screens (Moore 2018).
Besides, DTV can also provide other non-traditional television services such as multimedia or interactivity. DTV also permits special services such as multiplexing (more than one program on the same channel), electronic program guides and additional languages (spoken or subtitled). These non-television services can add additional attraction for digital televisions and they are more suited to the trend of privatization of television watching experiences
Brenton Foundation. “The Origins and Future Prospects of Digital Television”. Accessed May 10, 2018.
Kruger, Lennard G., and Peter F. Guerrero. Digital television: an overview. New York: Nova Publishers, 2002.
Moore, Chris. “The Advantages of Digital TV Over Analog”. Accessed May 9, 2018.