Video broadcast technology's next generation is digital TV. The technology which was created in 1950s is known as analog television. Like computers, digital TV (DTV) changes videos and films into digital images or to binary form before transmitting them. Some people say analog system still works then why they should switch to DTV. CDs replaced cassettes that replaced 8-track tapes. Same way, with the advancement in technology, you will see betterment in the equipment. We are using analog TV from last six decades but its time for change.
In digital TV, the broadcasting of the TV signals has been changed. Now signals work on low bandwidth because of which you'll get better quality picture and more options. With the help of low bandwidth, digital TV do not need broadcast spectrum. It offers high end picture and sound quality. With the introduction of digital technology, only few channels required some programming. Analog television sets use magnetic waves to transmit the audio and video whereas digital sets employ data like computers to provide superior audio and video quality.
The difference in resolution also makes TV viewing a great experience. The resolution of TV determines the picture quality. You can measure resolution in pixels and more number of pixels means better quality. Regular analog system has a resolution of 512 x 400 pixels. However, if you talk about simple computer it has a resolution of 640 x 480. The higher quality monitors or DTVs provides minimum ten time better picture quality than analog.
With the help of high definition programming of digital TV, you can enjoy high quality images in wide screen format. With digital technology, broadcasting of number of various TV programs can carry out simultaneously. Unlike analog system, several high definition programs can be broadcasts on a single channel.
However, still majority of people use analog television. If you're also using analog TV, you cannot view digital images however, you can receive digital signals. It means that signal will be clearer than before however, signals need to convert standard analog resolution to view on analog system. Hence, you'll receive digital signals but view will remain the same ie, analog system. You can use set top box to convert the signals. Some broadcasters use satellites systems to convert the signals.
The exact result of digital signals can be seen in digital TVs. When digital transmission occurs, you can figure out the difference between the picture and sound quality of digital television and analog TV. A new standard has been set up for any digital television which is known as Advanced Television Standards Committee (ATSC).
Digital TV comes with user friendly interface. You can go through the listing of the channels and get rid of searching the channels for your kind of shows. Transmission of signals on digital television can be compressed so that it uses low bandwidth which means more channels can be broadcast using same air frequency or cable. There is no doubt that digital TV is improving the television viewing experience.
Source by Jerry T Eliszewski