Televisioonisignaalide

Televisioonisignaalide is the Estonian term for television signals. These are radio waves that carry audio and video information from a transmitter to a receiver, enabling the display of television programs. Historically, television signals were transmitted using analog technology, where the signal's amplitude and frequency varied continuously to represent the video and audio information. This analog system, while effective, was susceptible to interference, leading to picture and sound degradation.

In the late 20th and early 21st centuries, a transition to digital television signals occurred. Digital signals encode information as a series of binary digits (0s and 1s). This digital format offers significant advantages, including improved picture and sound quality, greater bandwidth efficiency allowing for more channels and higher definition broadcasts, and increased resistance to interference. Digital television signals can be transmitted terrestrially (over the air), via cable networks, or through satellite. The shift to digital broadcasting has been a global phenomenon, largely completed in many countries, including Estonia, by the early 2010s. The specific standards for digital television transmission vary by region, with common examples being DVB-T/T2 for terrestrial broadcasting in Europe and ATSC in North America. Decoding these signals requires specialized digital tuners found in modern televisions or set-top boxes.