CN110149547A - A kind of system and method for fast automatic search of satellite program - Google Patents
A kind of system and method for fast automatic search of satellite program Download PDFInfo
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- CN110149547A CN110149547A CN201910447280.3A CN201910447280A CN110149547A CN 110149547 A CN110149547 A CN 110149547A CN 201910447280 A CN201910447280 A CN 201910447280A CN 110149547 A CN110149547 A CN 110149547A
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/434—Disassembling of a multiplex stream, e.g. demultiplexing audio and video streams, extraction of additional data from a video stream; Remultiplexing of multiplex streams; Extraction or processing of SI; Disassembling of packetised elementary stream
- H04N21/4345—Extraction or processing of SI, e.g. extracting service information from an MPEG stream
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/438—Interfacing the downstream path of the transmission network originating from a server, e.g. retrieving MPEG packets from an IP network
- H04N21/4382—Demodulation or channel decoding, e.g. QPSK demodulation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/438—Interfacing the downstream path of the transmission network originating from a server, e.g. retrieving MPEG packets from an IP network
- H04N21/4383—Accessing a communication channel
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/438—Interfacing the downstream path of the transmission network originating from a server, e.g. retrieving MPEG packets from an IP network
- H04N21/4385—Multiplex stream processing, e.g. multiplex stream decrypting
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
- Circuits Of Receivers In General (AREA)
Abstract
The invention discloses a kind of system of fast automatic search of satellite program, including FPGA and demodulation chip, FPGA includes TS stream preprocessing module, I2C module, MCU, frequency point scanning module, communication control interactive module and ASI output module.Also disclose a kind of method of fast automatic search of satellite program, comprising: program searching starting；TS stream is received, is sent into inside MCU after locking synchronization；MCU carries out the parsing of PAT/PMT table, stores programme information；If there is next frequency point, repeat the above steps, otherwise terminate to search for, and will complete search TS stream exported by junior ASI or DATA data output.The soft core of main control MCU built in FPGA in the present invention receives satellite programming stream, locks the pretreatment operations such as judgement, the fast automatic search of energy has the characteristics that stability is high, at low cost, transplanting is flexible using the powerful parallel processing capability of FPGA.
Description
Technical field
The present invention relates to satellite-signal technical fields, are a kind of systems of fast automatic search of satellite program specifically
And method.
Background technique
The method of existing automatic search of satellite program is all based on CPU+ASIC chip platform, the side realized using pure software
Formula, this mode are relatively high to the processing speed requirement of CPU, these methods are primarily present transplanting at high cost, upgrading and realization side
Method is not flexible, and than relatively time-consuming, the automatic search for completing a satellite programming is general 10 minutes time-consuming.
Summary of the invention
It is existing for solving the purpose of the present invention is to provide a kind of system and method for fast automatic search of satellite program
Satellite programming search is realized using pure software based on CPU_ASIC chip platform in technology, than relatively time-consuming problem.
The present invention is solved the above problems by following technical proposals:
A kind of system of fast automatic search of satellite program, including FPGA and demodulation chip, the demodulation chip is for solving
Adjust satellite programming stream, and provide parallel TS flow data to FPGA, the FPGA by I2C bus to the parameter of demodulation chip into
Row setting, the FPGA include TS stream preprocessing module, I2C module, MCU, frequency point scanning module, communication control interactive module and
ASI output module, in which:
TS flows preprocessing module, and the TS flow data sent for receiving the demodulation chip is completed to the same of TS flow data
Step determines that lock state and TS stream standard determine；
Frequency point scanning module, input terminal are connect with TS stream preprocessing module, and output end is connect with the MCU, is used for
Collect satellite programming channel information；
MCU is also used to receive the TS stream pretreatment for the parameter by demodulation chip described in I2C module initialization
The TS stream of module output and the satellite programming channel information of frequency point scanning module output, and the program analysis of TS stream is completed,
And the TS stream for completing program analysis is exported to communication control interactive module or ASI output module.
Further, the TS stream preprocessing module includes sequentially connected TS receiving module, TS flow data locking synchronization
Module and TS flow data fifo module, the TS flow data fifo module connect the frequency point scanning module.
Further, the MCU includes program analysis module and data switch module, the program analysis module and institute
It states TS flow data fifo module to connect with frequency point scanning module, the input terminal connection program of the data switch module analyzes mould
Then the output end of block transfers to junior ASI output or the output of DATA data for TS stream to be carried out identification control again.
Further, the demodulation chip includes TUNER and DEMOD, and the TUNER is solved for receiving LNB satellite-signal
The DEMOD is sent to after tune, received signal is demodulated into TS stream and is sent to the TS stream preprocessing module by DEMOD, described
FPGA carries out parameter setting to DEMOD and TUNER by I2C module.
Further, the parameter includes that frequency range, search step diameter, polarization mode and satellite receiver turn star switch.
A kind of method of fast automatic search of satellite program, comprising:
Step S100: program searching starting, initialization program store information structure, and the program stores information structure
Including program PID, programm name, audio-video PID and corresponding frequency point information；
Step S200: according to the parameter setting for saving frequency point information progress demodulation chip, the received LNB satellite of satellite antenna
The demodulated chip of signal is demodulated to TS stream, and FPGA receives TS stream, locking synchronization, and by frequency point scanning module, collects
Satellite programming channel information, and be sent into inside MCU after FIFO is cached；
Step S300: TS is waited to flow locking signal, into search；
Step S400: carrying out the parsing of PAT/PMT table, stores programme information；
Whether step S500: having next frequency point, if so, return step S200, otherwise terminates to search for, and will complete to search for
TS stream exported by junior ASI or DATA data export.
Further, the TS stream of search is completed in the step S500 after identification control, then junior ASI is transferred to export
Or DATA data output.
Compared with prior art, the present invention have the following advantages that and the utility model has the advantages that
The present invention provides a kind of hardware platform implementation based on FPGA+ASIC, shifting high, at low cost with stability
Plant the features such as flexible.The soft core of main control MCU built in FPGA carries out satellite programming stream using the powerful parallel processing capability of FPGA
It receives, lock the pretreatment operations such as judgement, can quickly solve the automatic search to satellite programming, complete a satellite and search automatically
Rope time-consuming can control within 4 minutes.
Detailed description of the invention
Fig. 1 is system block diagram of the invention；
Fig. 2 is the internal logic block diagram of MCU in the present invention.
Specific embodiment
The present invention is described in further detail below with reference to embodiment, embodiments of the present invention are not limited thereto.
Embodiment 1:
In conjunction with shown in attached drawing 1, a kind of system of fast automatic search of satellite program, including FPGA and demodulation chip, it is described
Demodulation chip is used for demodulation of satellite program stream, and provides parallel TS flow data to FPGA, and the FPGA is by I2C bus to solution
The parameter of aligning piece is configured, and the FPGA includes TS stream preprocessing module, I2C module, MCU, frequency point scanning module, communication
Control interactive module and ASI output module, in which:
TS flows preprocessing module, and the TS flow data sent for receiving the demodulation chip is completed to the same of TS flow data
Step determines that lock state and TS stream standard determine；
Frequency point scanning module, input terminal are connect with TS stream preprocessing module, and output end is connect with the MCU, is used for
Collect satellite programming channel information；
MCU is also used to receive the TS stream pretreatment for the parameter by demodulation chip described in I2C module initialization
The TS stream of module output and the satellite programming channel information of frequency point scanning module output, and the program analysis of TS stream is completed,
And the TS stream for completing program analysis is exported to communication control interactive module or ASI output module.
Further, the TS stream preprocessing module includes sequentially connected TS receiving module, TS flow data locking synchronization
Module and TS flow data fifo module, the TS flow data fifo module connect the frequency point scanning module.
Further, the MCU includes program analysis module and data switch module, the program analysis module and institute
It states TS flow data fifo module to connect with frequency point scanning module, the input terminal connection program of the data switch module analyzes mould
Then the output end of block transfers to junior ASI output or the output of DATA data for TS stream to be carried out identification control again.
Further, the demodulation chip includes TUNER and DEMOD, and the TUNER is solved for receiving LNB satellite-signal
The DEMOD is sent to after tune, received signal is demodulated into TS stream and is sent to the TS stream preprocessing module by DEMOD, described
FPGA carries out parameter setting to DEMOD and TUNER by I2C module.
Further, the parameter includes that frequency range, search step diameter, polarization mode and satellite receiver turn star switch.
Embodiment 2:
In conjunction with shown in attached drawing 2, a kind of method of fast automatic search of satellite program, comprising:
Step S100: program searching starting, initialization program store information structure, and the program stores information structure
Including program PID, programm name, audio-video PID and corresponding frequency point information；
Step S200: according to the parameter setting for saving frequency point information progress demodulation chip, the received LNB satellite of satellite antenna
The demodulated chip of signal is demodulated to TS stream, and FPGA receives TS stream, locking synchronization, and by frequency point scanning module, collects
Satellite programming channel information, and be sent into inside MCU after FIFO is cached；
Step S300: TS is waited to flow locking signal, into search；
Step S400: carrying out the parsing of PAT/PMT table, stores programme information；
Whether step S500: having next frequency point, if so, return step S200, otherwise terminates to search for, and will complete to search for
TS stream exported by junior ASI or DATA data export.
Further, the TS stream of search is completed in the step S500 after identification control, then junior ASI is transferred to export
Or DATA data output.
Although reference be made herein to invention has been described for explanatory embodiment of the invention, and above-described embodiment is only this hair
Bright preferable embodiment, embodiment of the present invention are not limited by the above embodiments, it should be appreciated that those skilled in the art
Member can be designed that a lot of other modification and implementations, these modifications and implementations will fall in principle disclosed in the present application
Within scope and spirit.
Claims (7)
1. a kind of system of fast automatic search of satellite program, which is characterized in that including FPGA and demodulation chip, the solution aligning
Piece is used for demodulation of satellite program stream, and provides parallel TS flow data to FPGA, and the FPGA is by I2C bus to demodulation chip
Parameter be configured, the FPGA include TS stream preprocessing module, I2C module, MCU, frequency point scanning module, communication control hand over
Mutual module and ASI output module, in which:
TS flows preprocessing module, and the TS flow data sent for receiving the demodulation chip is completed the synchronization to TS flow data, sentenced
Determine lock state and TS stream standard determines；
Frequency point scanning module, input terminal are connect with TS stream preprocessing module, and output end is connect with the MCU, for collecting
Satellite programming channel information；
MCU is also used to receive the TS stream preprocessing module for the parameter by demodulation chip described in I2C module initialization
The TS stream of output and the satellite programming channel information of frequency point scanning module output, and the program analysis of TS stream is completed, and will
The TS stream for completing program analysis is exported to communication control interactive module or ASI output module.
2. a kind of system of fast automatic search of satellite program according to claim 1, which is characterized in that the TS stream is pre-
Processing module includes sequentially connected TS receiving module, TS flow data locking synchronization module and TS flow data fifo module, described
TS flow data fifo module connects the frequency point scanning module.
3. a kind of system of fast automatic search of satellite program according to claim 2, which is characterized in that the MCU packet
Program analysis module and data switch module are included, the program analysis module is swept with the TS flow data fifo module and frequency point
Module connection is retouched, the output end of the input terminal connection program analysis module of the data switch module is carried out for flowing TS
Then junior ASI output or the output of DATA data are transferred in identification control again.
4. a kind of system of fast automatic search of satellite program, feature described in any one of -3 exist according to claim 1
In the demodulation chip includes TUNER and DEMOD, and the TUNER is sent to described for receiving LNB satellite-signal after demodulation
Received signal is demodulated into TS stream and is sent to the TS stream preprocessing module by DEMOD, DEMOD, and the FPGA passes through I2C module
Parameter setting is carried out to DEMOD and TUNER.
5. a kind of system of fast automatic search of satellite program according to claim 4, which is characterized in that the parameter packet
It includes frequency range, search step diameter, polarization mode and satellite receiver and turns star switch.
6. a kind of method of fast automatic search of satellite program characterized by comprising
Step S100: program searching starting, initialization program store information structure, and the program storage information structure includes
Program PID, programm name, audio-video PID and corresponding frequency point information；
Step S200: according to the parameter setting for saving frequency point information progress demodulation chip, the received LNB satellite-signal of satellite antenna
Demodulated chip is demodulated to TS stream, and FPGA receives TS stream, locking synchronization, and by frequency point scanning module, collects satellite
Program channel information, and be sent into inside MCU after FIFO is cached；
Step S300: TS is waited to flow locking signal, into search；
Step S400: carrying out the parsing of PAT/PMT table, stores programme information；
Whether step S500: having next frequency point, if so, return step S200, otherwise terminates to search for, and the TS that will complete search
Stream is exported by junior ASI or the output of DATA data.
7. a kind of method of fast automatic search of satellite program according to claim 6, which is characterized in that the step
The TS stream of search is completed in S500 after identification control, then transfers to junior ASI output or the output of DATA data.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910447280.3A CN110149547B (en) | 2019-05-27 | 2019-05-27 | System and method for quickly and automatically searching satellite programs |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910447280.3A CN110149547B (en) | 2019-05-27 | 2019-05-27 | System and method for quickly and automatically searching satellite programs |
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| CN110149547A true CN110149547A (en) | 2019-08-20 |
| CN110149547B CN110149547B (en) | 2021-08-17 |
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Cited By (2)
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| CN113784202A (en) * | 2021-08-16 | 2021-12-10 | 广东长虹电子有限公司 | Method for searching channels of satellite television or set top box |
| CN115412115A (en) * | 2022-10-27 | 2022-11-29 | 北京华建云鼎科技股份公司 | Satellite signal receiver |
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