Digitaaltelevisiooni

Digitaaltelevisiooni, or digital television (DTV), refers to the transmission of audio and video signals in digital format, as opposed to the older analog system. This technological shift allows for a more efficient use of broadcast spectrum, leading to improved picture and sound quality, as well as the ability to offer additional features and services.

In analog television, signals were transmitted as continuous waves, which were susceptible to interference and degradation, resulting in "snow" or ghosting on the screen. Digital television converts these signals into discrete binary code, making them more robust and less prone to interference. This results in a sharper picture, clearer sound, and a wider range of colors.

One of the key advantages of DTV is its ability to transmit high-definition television (HDTV) signals. HDTV offers a significantly higher resolution than standard-definition television, providing a more immersive viewing experience. Furthermore, digital broadcasting enables the transmission of multiple channels within the same bandwidth previously occupied by a single analog channel, increasing channel availability.

Beyond improved video and audio, DTV also facilitates interactive services, such as electronic program guides (EPGs), pay-per-view options, and even early forms of video-on-demand. The transition from analog to digital broadcasting has been a global phenomenon, with many countries completing this process to leverage the benefits of digital technology.