televisoonisignaals

Televisoonisignaals refers to the electromagnetic waves or signals used to transmit television broadcasts. These signals carry audio and video information from a broadcasting station to a television receiver. Historically, two main types of signals have been used: analog and digital. Analog signals were the original method, where the audio and video information was encoded as continuous variations in the signal's amplitude and frequency. This method was prone to interference, leading to static and ghosting on screen.

Digital television signals represent a significant advancement. They encode information as discrete binary values, essentially ones and zeros. This digital format allows for more robust transmission, better picture and sound quality, and the ability to carry more data, including high-definition (HD) and ultra-high-definition (UHD) content. Digital signals are also more resistant to interference. The transition from analog to digital broadcasting, known as the digital transition or digital switchover, has been completed in many countries.

Televisoonisignaals can be transmitted terrestrially via radio waves, through cable television networks, or via satellite. Terrestrial signals are received by antennas, while cable signals travel through coaxial or fiber optic cables. Satellite signals are transmitted from a satellite in orbit to a satellite dish. The specific encoding and modulation techniques used for televisoonisignaals vary depending on the transmission method and the broadcasting standard employed in a particular region.