Mobile video broadcasting system and the method thereof
A mobile video and broadcasting system technology, applied in the field of signal transmission, can solve the problem of high cost, achieve the effect of saving cost, reducing investment and operation cost, reducing development cost and investment cost
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Embodiment 1
[0110] The transmission code stream of the present invention is transparent to the wireless sending equipment. After the transmission code stream reaches the wireless transmission device through the transmission network, the wireless transmission device sends it to the wireless terminal intact. The transmission network in this solution needs to adopt a digital transmission network, such as a metropolitan area network or an IP network. Figure 6 It is an example of using a metropolitan area network to transmit, which uses DS3 signals to transmit digital TV streams.
[0111] Such as Figure 7 Shown is a schematic structural diagram of the mobile video broadcasting system of this embodiment. It can be seen from the figure that the system structure of this embodiment specifically includes the following parts:
[0112] Cable TV system: This part is basically the same as the existing technology, and is used to produce and transmit video. The cable TV system sends the produced vid...
Embodiment 2
[0139] This embodiment adopts encoding that can be carried and transmitted on multiple protocols, such as MPEG-4 and H.264. After the video data is video coded, the encoding of the transmission code stream is no longer performed. Each transmission code stream or each multiplexed code stream only carries one video program, and each video program transmission code stream or multiplexed code stream directly passes through the transmission network. A sub-signal or IP network is sent to the wireless broadcasting system of the mobile video broadcasting ground transmission unit. The wireless broadcasting system does not need to provide any demultiplexer or multiplexer, and can multiplex the bearer signal to different carrier frequencies. Such as Figure 10 As shown, it is a schematic structural diagram of this embodiment, and it can be seen from the figure that relevant parts such as allocation matrix, scrambling, and multiplexer are omitted.
[0140] according to Figure 8 From th...
Embodiment 3
[0157] The schematic diagram of the network in this embodiment is the same as that in Embodiment 1. The difference from Embodiment 1 is that a demultiplexing device for transmitting code streams is built in the wireless sending device, and the wireless device directly sends the demultiplexed program code streams.
[0158]The wireless broadcast system demultiplexes the transmission code stream, and the wireless broadcast equipment includes a mobile video broadcast program distribution unit and a mobile video broadcast ground transmission unit. The mobile video broadcast program distribution unit directly sends the program code stream according to the carrier frequency configuration of the wireless broadcast system, and then assembles different multiplexed code streams into wireless broadcast frames and distributes them to the mobile video broadcast ground transmission unit, and the mobile video broadcast ground transmission unit Different program code streams can be sent on dif...
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