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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

Active Publication Date: 2021-08-17
SICHUAN JIUZHOU ELECTRONICS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a system and method for quickly and automatically searching for satellite programs, which is used to solve the time-consuming problem of using pure software to realize satellite program search based on the CPU_ASIC chip platform in the prior art

Method used

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  • A system and method for quickly and automatically searching for satellite programs
  • A system and method for quickly and automatically searching for satellite programs

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Experimental program
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Effect test

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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Abstract

The invention discloses a system for quickly and automatically searching for satellite programs, which includes FPGA and demodulation chip. FPGA includes TS stream preprocessing module, I2C module, MCU, frequency point scanning module, communication control interaction module and ASI output module. Also disclosed is a method for quickly and automatically searching for satellite programs, including: starting the program search; receiving the TS stream, locking and synchronizing it and sending it to the MCU; the MCU analyzes the PAT / PMT table and stores the program information; if there is a next frequency point, repeat the above steps, otherwise, end the search, and output the searched TS stream through the lower-level ASI or DATA data. In the present invention, the FPGA has a built-in main control MCU soft core, utilizes the powerful parallel processing capability of the FPGA, performs preprocessing operations such as receiving and locking judgment on the satellite program stream, can quickly and automatically search, and has the characteristics of high stability, low cost, and flexible transplantation. .

Description

technical field [0001] The invention relates to the technical field of satellite signals, in particular to a system and method for quickly and automatically searching for satellite programs. Background technique [0002] The existing methods for automatically searching for satellite programs are all based on the CPU+ASIC chip platform and implemented in pure software. This method requires a relatively high processing speed of the CPU. These methods mainly have high transplantation costs, inflexible upgrades and implementation methods. , and more time-consuming, it takes about 10 minutes to complete an automatic search for satellite programs. Contents of the invention [0003] The purpose of the present invention is to provide a system and method for quickly and automatically searching for satellite programs, which is used to solve the time-consuming problem of using pure software to realize satellite program search based on the CPU_ASIC chip platform in the prior art. [...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N21/434H04N21/438H04N21/4385
CPCH04N21/4345H04N21/4382H04N21/4383H04N21/4385
Inventor 杨军陈拥军卢剑平张建新丁艳蓉魏晋静刘耿
Owner SICHUAN JIUZHOU ELECTRONICS TECH
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