Digital videocast system capable of mobile reception
A technology of digital TV broadcasting and digital TV, which is applied in the direction of analog security/charging system and gigahertz frequency band transmission. Good, low cost, low network requirements
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[0013] like figure 1 , the system includes a satellite signal transmitting device, a signal transfer device, an encryption and program management device 6, a mobile communication network 7, and a mobile communication and TV receiving terminal 8.
[0014] In the satellite signal sending device, the TV program signal 1 is first compressed, according to the definition of the TV program and the bandwidth capacity of the signal transmitted by the satellite, according to any standard of MPEG-2, MPEG-4, AVS. Then, the TV signal 1 is sent to the coding modulation 2, channel coding such as symbol coding, interleaving, and forward error correction coding and RF signal QPSK modulation, and then sent to the transponder 3 of the satellite through the satellite transmitting antenna to carry out the satellite beam coverage area. Digital TV satellite broadcasting.
[0015] In view of the limitations of the receiving antenna of mobile communication and TV receiving terminals and the character...
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