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The so-called analogue systems of television are to be superseded by digital systems in the near future. Using this new system, Russian experts have managed to encode and compress flows of visual information to the extent that the requirement in the carrying capacity of communication channels has been cut by nearly 86 per cent.
The advantages of digital techniques over analogue electronic systems have demanded that they be used in television. These advantages improve the quality of the picture. While in the analogue system of recording signals noises and errors invariably accumulate at every stage of their transmission or copying, digital recording is almost free of signal errors.