A system and method for quickly and automatically searching for satellite programs
An automatic search and program technology, applied in the field of satellite signals, can solve time-consuming problems and achieve the effects of flexible transplantation, fast automatic search, and low cost
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Embodiment 1
[0026] combined with figure 1 As shown, a system for quickly and automatically searching for satellite programs includes an FPGA and a demodulation chip, the demodulation chip is used to demodulate the satellite program stream, and provides parallel TS stream data to the FPGA, and the FPGA communicates with the The parameters of the demodulation chip are set, and the FPGA includes a TS stream preprocessing module, an I2C module, an MCU, a frequency point scanning module, a communication control interaction module and an ASI output module, wherein:
[0027] The TS stream preprocessing module is used to receive the TS stream data sent by the demodulation chip, complete the synchronization of the TS stream data, determine the locking status and determine the TS stream format;
[0028] A frequency point scanning module, the input end is connected to the TS stream preprocessing module, and the output end is connected to the MCU for collecting satellite program channel information; ...
Embodiment 2
[0035] combined with figure 2 As shown, a method for quickly and automatically searching for satellite programs, including:
[0036] Step S100: start the program search, initialize the program storage information structure, the program storage information structure includes program PID, program name, audio and video PID and corresponding frequency point information;
[0037] Step S200: Set the parameters of the demodulation chip according to the stored frequency point information. The LNB satellite signal received by the satellite antenna is demodulated into a TS stream by the demodulation chip. The FPGA receives the TS stream, locks and synchronizes it, and passes through the frequency point scanning module. Collect satellite program channel information and send it to MCU after FIFO buffer;
[0038] Step S300: Waiting for the TS stream locking signal, and entering the search;
[0039] Step S400: Analyze the PAT / PMT table and store program information;
[0040] Step S500: ...
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