How Analog Tv and Digital Tv Work

How Analog Tv and Digital Tv Work


ANALOG TV WORK CONCEPT





Analog broadcasting is done by recording images and sounds, then convert it into waves, then this wave is transmitted by television stations. This wave is received by our home television antenna. Our television machine then converts the waves into the pictures and sounds we watch. The type of wave emitted by a television station is VHF / UHF. In analog broadcasts, these waves are transmitted continuously every second. The number of waves emitted every second indicates the speed of that wave. If in one second the wave is transmitted ten times, then the wave velocity is 10 Hertz. Hertz (Hz) is the unit of wave velocity.


   2. THE WORK CONCEPT OF DIGITAL TV





Technically, the radio frequency spectrum bands used for analog television can be used for digital television broadcasting. The bandwidth comparison used by analog technology with digital technology is 1: 6. So, if analog technology requires 8 MHz bandwidth for one transmission channel, the same wideband (multiplexed) digital technology can transmit as many as 6 to 8 channels transmitting simultaneously to different programs.
Digital TV is supported by receiver technology that is able to adapt according to its environment. Digital signals can be captured from a number of transmitters that form the same frequency network so that the coverage area of ​​digital TV can be expanded. Digital TVs have sound equipment and digital-formatted images such as those used by video cameras.

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