What gives transferring to the digital dispersion?...
What gives transferring to the digital dispersion?
The main advantages:
standing quality at the cost of increasing noise immunity;
high quality of sound and image in the limit of specific technical features;
to increase effectiveness of the usage of radiofrequency spectrum and at the cost of using fixed-frequency network (FFN);
to reduce exploitation expenses - quantity and power of transmitter ( for TV program minimum 10 times);
to increase the quantity and variety of program;
possibility of offering the new services (video on demand, online news, etc).
Traditional methods of analog-digital transformation - to transfer 1 TV program (it is impossible in the channel of 6-8 MHz) is necessary to transfer TV signal with a speed ~270 Mbit/s.
Modern technologies of image compression provide transfer 4-6 TV of «usual» programs or 1 programs of «high clearness» and 1-2 «usual» programs in the channel of 6-8 MHz with speed of 20 Mbit/s transfer.
possibility to create «system of dispersion with services integration» (TV and ST program + INTERNET, video and etc.)