What are the international standards for digital TV?

What are the international standards for digital TV?

Digital TV is a complex system, mainly including the source compression part in the studio to complete the signal sampling, quantization and compression coding, the channel transmission part in the transmitter room for stable and reliable transmission, and the reception used by thousands of households And display section. The international standards of the source part are mainly the MPEG-1, MPEG-2, MPEG-4 and other audiovisual standards proposed by MPEG (Moving Picture Experts Group). There are many standards for the channel part, which are divided into three types: satellite, cable, and terrestrial according to different transmission media. Among the satellite standards, DVB-S is proposed by the European DVB organization, and cable is mainly DVB-C.
At present, there are three main international standards for terrestrial digital TV: the DVB-T standard with COFDM as the core technology proposed by the European DVB organization; the ATSC standard with 8VSB as the core technology proposed by the United States Major League Organization; and the BST-OFDM proposed by Japan ISDB-T standard for core technology. The DMB-T scheme with TDS-OFDM as the core technology proposed by Tsinghua University has been notified to the ITU by the Ministry of Information Industry and the State Administration of Radio, Film and Television in the form of an information manuscript of "Development of China's Terrestrial Digital Multimedia Television Broadcasting", which has caused enthusiastic response This is the first step for China's digital TV standard to become an internationally recognized standard. Once DMB-T is determined as a national standard, it is likely to become the fourth terrestrial digital TV standard in the world.

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