CN106878765B - Backup monitoring system and method for information flow - Google Patents
Backup monitoring system and method for information flow Download PDFInfo
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- CN106878765B CN106878765B CN201611208224.7A CN201611208224A CN106878765B CN 106878765 B CN106878765 B CN 106878765B CN 201611208224 A CN201611208224 A CN 201611208224A CN 106878765 B CN106878765 B CN 106878765B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/60—Network streaming of media packets
- H04L65/75—Media network packet handling
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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]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/236—Assembling of a multiplex stream, e.g. transport stream, by combining a video stream with other content or additional data, e.g. inserting a URL [Uniform Resource Locator] into a video stream, multiplexing software data into a video stream; Remultiplexing of multiplex streams; Insertion of stuffing bits into the multiplex stream, e.g. to obtain a constant bit-rate; Assembling of a packetised elementary stream
- H04N21/23611—Insertion of stuffing data into a multiplex stream, e.g. to obtain a constant bitrate
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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]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/236—Assembling of a multiplex stream, e.g. transport stream, by combining a video stream with other content or additional data, e.g. inserting a URL [Uniform Resource Locator] into a video stream, multiplexing software data into a video stream; Remultiplexing of multiplex streams; Insertion of stuffing bits into the multiplex stream, e.g. to obtain a constant bit-rate; Assembling of a packetised elementary stream
- H04N21/2368—Multiplexing of audio and video streams
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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]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/24—Monitoring of processes or resources, e.g. monitoring of server load, available bandwidth, upstream requests
- H04N21/2407—Monitoring of transmitted content, e.g. distribution time, number of downloads
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/222—Studio circuitry; Studio devices; Studio equipment
- H04N5/262—Studio circuits, e.g. for mixing, switching-over, change of character of image, other special effects ; Cameras specially adapted for the electronic generation of special effects
- H04N5/268—Signal distribution or switching
Abstract
The invention provides a backup monitoring system and method of information flow, wherein the method comprises the following steps of S1: extracting filtering channel information of the input information flow; s2: performing information configuration on the information flow; s3: multiplexing the information flow added with the configuration information for the first time, and outputting a first multiplexed flow; s4: multiplexing stream format conversion is carried out on the first multiplexing stream, and then a daughter board multiplexing stream is output; s5: multiplexing the daughter board multiplexing stream for the second time; s6: monitoring the main/standby state of the information flow, collecting the main/standby state information, making main/standby switching judgment, and completing the main/standby switching action of the information flow; s7: controlling the output daughter board to output information flow; the invention carries out information configuration on the information flow through the processor control module, and utilizes the daughter board logic and the mainboard logic to carry out filtering and adding processing on the information flow, thereby realizing high-efficiency centralized monitoring management on the information flow, supporting the main-standby monitoring of more than thousands of program information flows and finishing the quick main-standby switching of the information flow.
Description
Technical Field
The invention relates to the technical field of backup monitoring management of information flow, in particular to a backup monitoring system and a backup monitoring method of information flow.
Background
With the rapid development of the broadcasting system, the number of input nodes of the broadcasting system is increasing, and the number of multiplexing designs based on the transmission stream is also increasing, so that the complexity of the input module of the broadcasting system is higher and higher. In order to meet the requirement of the broadcast system on the reliability of the input module, when the multiplexing design of the transport stream is more and more complex, the main and standby modules which supplement the reliability of the input module are more and more important. The main and standby modules comprise three backup modes, namely a board backup mode, a port backup mode and a program backup mode, wherein the board backup mode is used for performing backup on two input daughter boards with consistent input sources; the port level backup mode is to perform backup on one port of the same daughter board or one port of different daughter boards; the program level backup mode is the most complex backup design, and the backup design is mainly carried out according to the relevance of programs. In the prior art, there is no main/standby function design for simultaneously managing and implementing the three backup modes, and flexible backup monitoring management of information flow cannot be implemented; the backup monitoring management design of the information flow is complicated.
Disclosure of Invention
The backup monitoring system and method for information flow provided by the invention configure information for information flow through the processor control module, and filter and add information flow by using the daughter board logic and the mainboard logic, thereby realizing high-efficiency centralized monitoring management of information flow, supporting main-standby monitoring of more than thousand program information flows, and completing quick main-standby switching of information flow.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
the invention provides a backup monitoring system of information flow, which comprises a processor control module, an input daughter board provided with a daughter board logic module, a mainboard provided with a mainboard logic module and an output daughter board, wherein the input daughter board is connected with the output daughter board through a bus; the daughter board logic module is integrated with a first multiplexer unit and a multiplexing format conversion unit; the main board logic module is integrated with a second multiplexer unit and a backup monitoring unit;
the daughter board logic module of the input daughter board is used for extracting filtering channel information of input information flow and sending the extracted filtering channel information to the processor control module;
the processor control module is used for processing the filtering channel information, performing information configuration on the information flow, and sending configuration information of the information configuration to a daughter board logic module of an input daughter board and a backup monitoring unit of a mainboard logic module;
after the daughter board logic module of the input daughter board adds the configuration information to the information flow; multiplexing the information stream added with the configuration information for the first time through a first multiplexer unit, and outputting a first multiplexed stream to a multiplexing format conversion unit, wherein the multiplexing format conversion unit is used for performing multiplexing stream format conversion on the first multiplexed stream and outputting a daughter board multiplexed stream;
the second multiplexer unit of the main board logic module is used for multiplexing the daughter board multiplexing stream for the second time and outputting the second multiplexing stream to the backup monitoring unit;
the backup monitoring unit of the main board logic module is used for performing primary and secondary state monitoring on the information flow according to the information flow configuration information received from the processor control module after extracting the basic information of the second multiplexing flow, collecting the primary and secondary state information, and performing primary and secondary switching judgment according to the primary and secondary state information to complete the primary and secondary switching action of the information flow;
and after the main board logic module completes the main-standby switching of the information flow, the output daughter board is controlled to output the information flow.
Further, the filtering channel information extraction includes extracting PAT and PMT information of the information stream according to an MPEG protocol, and parsing audio information and video information in the information stream according to the PAT and PMT information.
Further, the information stream comprises an audio information stream and a video information stream;
the configuration information of the information stream comprises slot position information, channel information, temporary PID information, main and standby program information and program number information of the information stream.
Further, the format conversion of the multiplexing stream includes rearranging the information of the first multiplexing stream, and adding a conflict identifier and a primary-standby relationship identifier to the rearranged multiplexing stream.
Further, the extracting of the basic information of the backup monitoring unit includes extracting information of the main and standby program numbers in the second multiplexing stream;
the main/standby state monitoring of the backup monitoring unit comprises code rate monitoring, PID monitoring, continuous counting monitoring and descrambling state monitoring; and completing the active-standby switching of the information flow according to the monitoring information of the code rate, the PID, the continuous counting and the descrambling state.
Another aspect of the present invention provides a backup monitoring method for information flow, including the following steps:
s1: extracting filtering channel information of the input information flow;
s2: processing the filtering channel information and then configuring information of the information flow;
s3: adding the configuration information configured by the information into the information flow; multiplexing the information flow added with the configuration information for the first time, and outputting a first multiplexed flow;
s4: multiplexing stream format conversion is carried out on the first multiplexing stream, and then a daughter board multiplexing stream is output;
s5: multiplexing the daughter board multiplexing stream for the second time;
s6: after extracting the basic information of the second multiplexing flow, monitoring the main/standby state of the information flow according to the configuration information of the information flow, collecting the main/standby state information, and making main/standby switching judgment according to the main/standby state information to complete the main/standby switching action of the information flow;
s7: and after the main and standby switching of the information flow is completed, controlling the output daughter board to output the information flow.
Further, the filtering channel information extraction includes extracting PAT and PMT information of the information stream according to an MPEG protocol, and parsing audio information and video information in the information stream according to the PAT and PMT information.
Further, the information stream comprises an audio information stream and a video information stream; the configuration information of the information stream comprises slot position information, channel information, temporary PID information, main and standby program information and program number information of the information stream.
Further, the format conversion of the multiplexing stream includes rearranging the information of the first multiplexing stream, and adding a conflict identifier and a primary-standby relationship identifier to the rearranged multiplexing stream.
Further, the extracting of the basic information comprises extracting information of the main and standby program numbers in the second multiplexing stream;
the main and standby state monitoring comprises code rate monitoring, PID monitoring, continuous counting monitoring and descrambling state monitoring; and completing the main-standby switching of the information flow according to the monitoring information of the code rate, the PID, the continuous counting and the descrambling state.
The invention provides a backup monitoring system and a backup monitoring method of information flow, which configure information of the information flow through a processor control module, and filter and add the information flow by utilizing subboard logic and mainboard logic, thereby realizing effective backup management of the information flow; compared with the prior art, the invention realizes the backup monitoring of three modes of the information flow, namely a board level backup mode, a port level backup mode and a program level backup mode of the information flow; the information flow is convenient to carry out flexible backup monitoring management; the method and the device realize the efficient centralized monitoring management of the information flow, can support the main and standby monitoring of more than thousand program information flows, and complete the quick main and standby switching of the information flows.
Drawings
FIG. 1 is a schematic diagram of a backup monitoring system for information flow according to the present invention;
FIG. 2 is a schematic diagram of a main board logic structure of a backup monitoring system for information flow according to the present invention;
fig. 3 is a flow chart of a backup monitoring method of information flow according to the present invention.
Detailed Description
The embodiments of the present invention will be described in detail with reference to the accompanying drawings, which are for reference and illustrative purposes only and are not intended to limit the scope of the invention.
An aspect of the embodiment of the present invention provides a backup monitoring system for an information stream, as shown in fig. 1, which is a structural block diagram of a transmission multiplexing system for an information stream, and includes a processor control module (not shown in the figure), an input daughter board 11 provided with a daughter board logic module, a motherboard 2 provided with a motherboard logic module, and an output daughter board 3; the daughter board logic module is integrated with a first multiplexer unit 111 and a multiplexing format conversion unit 112; the main board logic module is integrated with a second multiplexer unit 21 and a backup monitoring unit 22;
the daughter board logic module of the input daughter board is used for extracting filtering channel information of input information flow and sending the extracted filtering channel information to the processor control module; the information stream comprises an audio information stream and a video information stream; the filtering channel information extraction comprises extracting PAT and PMT of the information stream according to an MPEG protocol, analyzing audio information and video information in the information stream according to the PAT and PMT information, and sending the analyzed audio information and video information to a processor control module.
The processor control module is used for processing the filtering channel information, performing information configuration on the information flow, and sending configuration information of the information configuration to a daughter board logic module of an input daughter board and a backup monitoring unit of a mainboard logic module; specifically, the processor control module performs data interaction with the daughter board logic module of each input daughter board, performs information configuration on the input information flow of each interface of each input daughter board, and sends the configuration information of the information configuration to the daughter board logic module of the input daughter board and the backup monitoring unit of the main board logic module; adding, by a daughterboard logic module, the configuration information to the information flow; specifically, the configuration information includes slot position information, channel information, temporary PID information, main and standby program information, and program number information of the information stream; the main and standby program information is used for identifying the main and standby relation of the information flow.
After the daughter board logic module of the input daughter board adds the configuration information to the information flow; multiplexing the information stream added with the configuration information for the first time through a first multiplexer unit, and outputting a first multiplexed stream to a multiplexing format conversion unit, wherein the multiplexing format conversion unit is used for performing multiplexing stream format conversion on the first multiplexed stream and outputting a daughter board multiplexed stream; the first multiplexer unit multiplexes the information flow for the first time and then performs multiplexing format conversion through the multiplexing format conversion unit, so that the logical design resource of the daughter board logic is saved, and the logical processing efficiency is improved. The format conversion of the multiplexing stream comprises rearranging the information of the first multiplexing stream, compressing the storage space of the information stream, adding a conflict identifier and a main-standby relation identifier to the rearranged multiplexing stream, and solving the conflict of temporary PID information, main-standby program information and program number information of the multiplexed information stream.
As shown in fig. 1 and fig. 2, the second multiplexer unit of the motherboard logic module is configured to multiplex the daughter board multiplexing stream for the second time, and output the second multiplexing stream to the backup monitoring unit;
the backup monitoring unit of the main board logic module is used for performing primary and secondary state monitoring on the information flow according to the information flow configuration information received from the processor control module after extracting the basic information of the second multiplexing flow, collecting the primary and secondary state information, and performing primary and secondary switching judgment according to the primary and secondary state information to complete the primary and secondary switching action of the information flow; the extraction of the basic information of the backup monitoring unit comprises the extraction of the information of the main program number and the standby program number in the second multiplexing stream; the main/standby state monitoring of the backup monitoring unit comprises code rate monitoring, PID monitoring, continuous counting monitoring and descrambling state monitoring; and the backup monitoring unit completes the main-standby switching of the information flow according to the monitoring information of the code rate, the PID, the continuous counting and the descrambling state.
And after the main board logic module completes the main-standby switching of the information flow, the output daughter board is controlled to output the information flow.
Preferably, the filtering channel information extracting includes extracting PAT and PMT information of the information stream according to an MPEG protocol, and parsing audio information and video information in the information stream according to the PAT and PMT information.
Preferably, the information stream comprises an audio information stream and a video information stream;
the configuration information of the information stream comprises slot position information, channel information, temporary PID information, main and standby program information and program number information of the information stream.
Preferably, the format conversion of the multiplexing stream includes rearranging the information of the first multiplexing stream, and adding a collision identifier and a primary-standby relationship identifier to the rearranged multiplexing stream.
Preferably, the extracting of the basic information of the backup monitoring unit includes extracting information of the main and standby program numbers in the second multiplexing stream;
the main/standby state monitoring of the backup monitoring unit comprises code rate monitoring, PID monitoring, continuous counting monitoring and descrambling state monitoring; and completing the active-standby switching of the information flow according to the monitoring information of the code rate, the PID, the continuous counting and the descrambling state.
Another aspect of the present invention provides a backup monitoring method for information flow, as shown in fig. 3, including the following steps:
s1: extracting filtering channel information of the input information flow;
s2: processing the filtering channel information and then configuring information of the information flow;
s3: adding the configuration information configured by the information into the information flow; multiplexing the information flow added with the configuration information for the first time, and outputting a first multiplexed flow;
s4: multiplexing stream format conversion is carried out on the first multiplexing stream, and then a daughter board multiplexing stream is output;
s5: multiplexing the daughter board multiplexing stream for the second time;
s6: after extracting the basic information of the second multiplexing flow, monitoring the main/standby state of the information flow according to the configuration information of the information flow, collecting the main/standby state information, and making main/standby switching judgment according to the main/standby state information to complete the main/standby switching action of the information flow;
s7: and after the main and standby switching of the information flow is completed, controlling the output daughter board to output the information flow.
Preferably, the filtering channel information extracting includes extracting PAT and PMT information of the information stream according to an MPEG protocol, and parsing audio information and video information in the information stream according to the PAT and PMT information.
Preferably, the information stream comprises an audio information stream and a video information stream;
the configuration information of the information stream comprises slot position information, channel information, temporary PID information, main and standby program information and program number information of the information stream.
Preferably, the format conversion of the multiplexing stream includes rearranging the information of the first multiplexing stream, and adding a collision identifier and a primary-standby relationship identifier to the rearranged multiplexing stream.
Preferably, the extracting of the basic information includes extracting information of the main and standby program numbers in the second multiplexing stream;
the main and standby state monitoring comprises code rate monitoring, PID monitoring, continuous counting monitoring and descrambling state monitoring; and completing the main-standby switching of the information flow according to the monitoring information of the code rate, the PID, the continuous counting and the descrambling state.
The invention relates to a backup monitoring system and method of information flow, which comprises the following steps:
as shown in fig. 1 and fig. 2, the processor control module performs data interaction through the daughter board logic module of each input daughter board, performs information configuration for the input information streams of the interfaces CH11 and CH12 … CHnm of each input daughter board 11 and 12, and sends the configuration information of the information configuration to the backup monitoring unit of the daughter board logic module and the motherboard logic module of the input daughter board; the processor control module is enabled to independently manage the information flow according to different input daughter boards, namely the information configuration of the information flow, and then the daughter board logic module and the backup monitoring unit of the mainboard logic module of the input daughter board are sent the configuration information of the information configuration, so that the replacement of the bottom layer data of the information flow is completed by the daughter board logic, namely the configuration information is added into the information flow; the configuration information comprises slot position information, channel information, temporary PID information, main and standby program information and program number information of the information stream; then the subboard logic multiplexes the information flow added with the configuration information for the first time through a first multiplexer unit, and outputs a subboard multiplexing flow after multiplexing flow format conversion is carried out on the first multiplexing flow through a multiplexing format conversion unit; then, a second multiplexer unit of the mainboard logic multiplexes the daughter board multiplexing stream and outputs a second multiplexing stream to the main/standby monitoring module for unified processing; after extracting the basic information of the second multiplexing flow, the backup monitoring unit of the mainboard logic module monitors the main/standby state of the information flow according to the information flow configuration information received from the processor control module, collects the main/standby state information, makes main/standby switching judgment according to the main/standby state information, and completes the main/standby switching action of the information flow; the extraction of the basic information of the backup monitoring unit comprises the extraction of the information of the main program number and the standby program number in the second multiplexing stream; the main/standby state monitoring of the backup monitoring unit comprises code rate monitoring, PID monitoring, continuous counting monitoring and descrambling state monitoring; the backup monitoring unit completes the main-standby switching of information flow according to the monitoring information of the code rate, PID, continuous counting and descrambling state; and after the main board logic module completes the main-standby switching of the information flow, the output daughter board is controlled to output the information flow.
Compared with the prior art, the backup monitoring system and the backup monitoring method for the information flow provided by the embodiment of the invention have the advantages that the information flow is effectively backup managed through the backup monitoring units of the processor control module and the mainboard logic module, the extremely fast monitoring and switching of the information flow are realized, the centralized monitoring management of the information flow is realized, the backup monitoring of three modes of the information flow is also realized, and the flexible backup monitoring management of the information flow is facilitated. For example, when the information stream input by the interface CH11 of the input sub board 11 and the information stream input by the interface CHn1 of the input sub board 12 are in a primary-standby relationship, the system and the method for monitoring the backup of the information streams provided by the embodiments of the present invention can implement board-level backup of two information streams, and also implement port (interface) -level backup and program-level backup of two information streams through the processing of the sub board logic module, the main board logic module, and the processor control module.
The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the scope of the present invention.
Claims (10)
1. A backup monitoring system of information flow comprises a processor control module, an input daughter board provided with a daughter board logic module, a mainboard provided with a mainboard logic module, and an output daughter board; the method is characterized in that: the daughter board logic module is integrated with a first multiplexer unit and a multiplexing format conversion unit; the main board logic module is integrated with a second multiplexer unit and a backup monitoring unit;
the daughter board logic module of the input daughter board is used for extracting filtering channel information of input information flow and sending the extracted filtering channel information to the processor control module;
the processor control module is used for processing the filtering channel information, performing information configuration on the information flow, and sending configuration information of the information configuration to a daughter board logic module of an input daughter board and a backup monitoring unit of a mainboard logic module;
after the daughter board logic module of the input daughter board adds the configuration information to the information flow; multiplexing the information stream added with the configuration information for the first time through a first multiplexer unit, and outputting a first multiplexed stream to a multiplexing format conversion unit, wherein the multiplexing format conversion unit is used for performing multiplexing stream format conversion on the first multiplexed stream and outputting a daughter board multiplexed stream;
the second multiplexer unit of the main board logic module is used for multiplexing the daughter board multiplexing stream for the second time and outputting the second multiplexing stream to the backup monitoring unit;
the backup monitoring unit of the main board logic module is used for performing primary and secondary state monitoring on the information flow according to the information flow configuration information received from the processor control module after extracting the basic information of the second multiplexing flow, collecting the primary and secondary state information, and performing primary and secondary switching judgment according to the primary and secondary state information to complete the primary and secondary switching action of the information flow;
and after the main board logic module completes the main-standby switching of the information flow, the output daughter board is controlled to output the information flow.
2. A backup monitoring system for an information flow according to claim 1, characterized by:
the filtering channel information extraction comprises extracting PAT and PMT information of the information stream according to an MPEG protocol, and analyzing audio information and video information in the information stream according to the PAT and PMT information.
3. A backup monitoring system for an information flow according to claim 1, characterized by:
the information stream comprises an audio information stream and a video information stream;
the configuration information of the information stream comprises slot position information, channel information, temporary PID information, main and standby program information and program number information of the information stream.
4. A backup monitoring system for an information flow according to claim 1, characterized by:
the multiplexing stream format conversion includes rearranging the information of the first multiplexing stream, and adding a conflict identifier and a primary-standby relation identifier to the rearranged multiplexing stream.
5. A backup monitoring system for an information flow according to claim 1, characterized by:
the extraction of the basic information of the backup monitoring unit comprises the extraction of the information of the main program number and the standby program number in the second multiplexing stream;
the main/standby state monitoring of the backup monitoring unit comprises code rate monitoring, PID monitoring, continuous counting monitoring and descrambling state monitoring; and completing the active-standby switching of the information flow according to the monitoring information of the code rate, the PID, the continuous counting and the descrambling state.
6. A backup monitoring method for information flow includes the following steps:
s1: extracting filtering channel information of the input information flow;
s2: processing the filtering channel information and then configuring information of the information flow;
s3: adding the configuration information configured by the information into the information flow; multiplexing the information flow added with the configuration information for the first time, and outputting a first multiplexed flow;
s4: multiplexing stream format conversion is carried out on the first multiplexing stream, and then a daughter board multiplexing stream is output;
s5: multiplexing the daughter board multiplexing stream for the second time and outputting a second multiplexing stream;
s6: after extracting the basic information of the second multiplexing flow, monitoring the main/standby state of the information flow according to the configuration information of the information flow, collecting the main/standby state information, and making main/standby switching judgment according to the main/standby state information to complete the main/standby switching action of the information flow;
s7: and after the main and standby switching of the information flow is completed, controlling the output daughter board to output the information flow.
7. A method of backup monitoring of an information flow according to claim 6, characterized by:
the filtering channel information extraction comprises extracting PAT and PMT information of the information stream according to an MPEG protocol, and analyzing audio information and video information in the information stream according to the PAT and PMT information.
8. A method of backup monitoring of an information flow according to claim 6, characterized by: the information stream comprises an audio information stream and a video information stream; the configuration information of the information stream comprises slot position information, channel information, temporary PID information, main and standby program information and program number information of the information stream.
9. A method of backup monitoring of an information flow according to claim 6, characterized by:
the multiplexing stream format conversion includes rearranging the information of the first multiplexing stream, and adding a conflict identifier and a primary-standby relation identifier to the rearranged multiplexing stream.
10. A method of backup monitoring of an information flow according to claim 6, characterized by:
the basic information extraction comprises the extraction of main and standby program number information in the second multiplexing stream;
the main and standby state monitoring comprises code rate monitoring, PID monitoring, continuous counting monitoring and descrambling state monitoring; and completing the main-standby switching of the information flow according to the monitoring information of the code rate, the PID, the continuous counting and the descrambling state.
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| CN103905840A (en) * | 2013-12-25 | 2014-07-02 | 惠州市伟乐科技有限公司 | System and method for achieving hybrid transmission of control state information and multiple transmission streams |
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| CN102523483A (en) * | 2011-12-27 | 2012-06-27 | 惠州市伟乐科技有限公司 | Method and device for transmission of control state information and multiple TSs |
| CN103905840A (en) * | 2013-12-25 | 2014-07-02 | 惠州市伟乐科技有限公司 | System and method for achieving hybrid transmission of control state information and multiple transmission streams |
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