Multiplex system of digital TV is the key part of HDTV.panerai luminor replica watches From the flowing direction of information sending end, this system combines video, audio, auxiliary data with other data bittorrent through encoder. After a series of complex processing, the composite single serial bits are directly sent to channel coding and modulation.
The information receiving end is opposite to this process. Multiplex does not existed in analog TV system. While in digital TV system, audio,buccaneers jerseys video, auxiliary data are packed by multiplex with the help of packing circulation device (it is actually a data packet). At present, network communication data are transmitted in a certain packing format. The packing of HDTV data lays a solid foundation for extendibility, grading, as well as interaction. 　　
Next, pay TV is a new tendency of television development in the future. Multiplex can scramble the package of program information,nfl shop and only the secret key to receiver has the right to descramble it. In the field of HDTV multiplexing transmission standards, America, Europe and Japan adopt MPEG-2 standards (Moving Picture Experts Groups). The United States already has special-purpose chip of MPEG-2 solution.
The length of HDTV packet is 188 bytes, integer times of ATM cell. In the future, with optical fiber transmission as medium and ATM as information transmission mode, the broadband integrated service digital network is likely to become the main body facilities of quot;information superhighwayquot;.49ers jerseys 4 ATM cells can be used in completely transmit a HDTV package so as to realize the convenient interface between HDTV and ATM.
The purpose of channel decoding and demodulation of digital television is to launch the signal through error correction coding, grid coding and balanced technology. The digital TV format in different countries have different standards, including bandwidth, error correction, especially the ways of modulation, which mainly refers to the HDTV multiplex system structure.givenchy wiki
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