CN102036105A - Method and system for multicasting digital TV signal monitoring instructions - Google Patents
Method and system for multicasting digital TV signal monitoring instructions Download PDFInfo
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- CN102036105A CN102036105A CN2010106133297A CN201010613329A CN102036105A CN 102036105 A CN102036105 A CN 102036105A CN 2010106133297 A CN2010106133297 A CN 2010106133297A CN 201010613329 A CN201010613329 A CN 201010613329A CN 102036105 A CN102036105 A CN 102036105A
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Abstract
The invention relates to a method and a system for multicasting digital TV signal monitoring instructions, belonging to the technical field of digital TV signal monitoring. The method comprises the following steps that: an instruction generation module at a server side generates monitoring instructions; a TS (Transport Stream) module at the server side generates corresponding monitoring instruction TS according to the monitoring instructions; the server side sends the monitoring instruction TS to a plurality of monitoring client sides through a hybrid fiber coax in a multicasting way; the monitoring client sides receive the monitoring instruction TS, and explains the monitoring instruction TS to obtain monitoring instructions. The invention can save the bandwidth. With the method, instructions can be issued to a plurality of equipment by only one data packet, and thereby the bandwidth for issuing instructions can be saved. Meanwhile, the invention solves the problem of sending monitoring instructions when a cable modem can not establish a TCP/IP (Transmission Control Protocol/Internet Protocol) communication link during reverse desynchrony.
Description
Technical field
The present invention relates to the digital television signal monitoring technical field, particularly a kind of digital television signal monitoring command group broadcasting method and system.
Background technology
Digital television signal need be monitored, to guarantee the stable of signal quality of digital television.Existing digital television signal monitoring order send mode generally sends by the ICP/IP protocol mode.Adopt the transmission of ICP/IP protocol mode can have following two problems:
1) ICP/IP protocol mainly sends in point-to-point mode, take massive band width, and employing multicast mode, then need hardware device supports such as router, the agreement aspect also has a lot of jejune places, and for example: security of multicast, Multicast Congestion Control, multicast state are assembled, flux of multicast charges or the like;
2) but therefore just normal operation when CALBE MODEM needs the both-way communication link to exist can't send test instruction reverse when asynchronous.
Summary of the invention
First goal of the invention of the present invention is to provide a kind of digital television signal monitoring command group broadcasting method, and the point-to-point mode of digital television signal monitoring order employing sends the technical problem that takies massive band width in the prior art to solve.
In order to realize first goal of the invention of the present invention, the technical scheme of employing is as follows:
A kind of digital television signal monitoring command group broadcasting method, described method comprises:
The instruction generation module of service end generates the monitoring instruction;
The transport stream module of service end generates corresponding monitoring instruction transport stream according to the monitoring instruction;
Service end sends to a plurality of monitoring clients to monitoring instruction transport stream by multicast mode through hybrid fiber coax;
The monitoring client receives monitoring instruction transport stream, and monitoring instruction transport stream is made an explanation obtains the monitoring instruction.
As a kind of preferred version, described method also comprises:
The Multiplexing module of service end carries out multiplexing process generation multiplexed signals to monitoring instruction transport stream and TV signal transport stream;
Service end sends to a plurality of monitoring clients to multiplexed signals by multicast mode through hybrid fiber coax;
The monitoring client receives multiplexed signals, handles obtaining monitoring instruction transport stream by demultiplexing.
As further preferred version, described monitoring instruction comprises the monitoring client identifying information that is used to specify one or more monitoring clients, after the first monitoring client received the monitoring instruction, the monitoring client identifying information of handling the monitoring instruction was specified the monitoring instruction of the first monitoring client.
As further preferred version again, described monitoring instruction also comprises testing time section, test event classification and test frequency.
As preferred version further, described test event classification comprises frequency test, spectrum measurement or program image measurement.
Second goal of the invention of the present invention is to provide a kind of digital television signal monitoring command group broadcast system, with the method for multicasting of realizing that first goal of the invention of the present invention is proposed.
In order to realize second goal of the invention of the present invention, the technical scheme of employing is as follows:
A kind of digital television signal monitoring command group broadcast system, described system comprises service end and the one or more monitoring clients that are connected by hybrid fiber coax with service end, and described service end comprises instruction generation module, transport stream module and the multicast sending module that connects successively:
The instruction generation module is used for generating the monitoring instruction;
The monitoring instruction that transport stream module generates according to the instruction generation module generates corresponding monitoring instruction transport stream;
The multicast sending module sends to a plurality of monitoring clients to monitoring instruction transport stream by multicast mode through hybrid fiber coax;
Described monitoring client comprises command reception module and instruction interpretation module:
The command reception module is used for receiving monitoring instruction transport stream;
The instruction interpretation module is used for instructing transport stream to make an explanation to monitoring and obtains the monitoring instruction.
As a kind of preferred version, described multicast sending module also comprises Multiplexing module, monitoring instruction transport stream and TV signal transport stream that described Multiplexing module is used for transport stream module is generated are carried out multiplexing process generation multiplexed signals, the multicast sending module sends to a plurality of monitoring clients to multiplexed signals by multicast mode through hybrid fiber coax, and the command reception module of monitoring client receives multiplexed signals;
Described command reception module also comprises demultiplexing module, is used for the multiplexed signals that receives is carried out demultiplexing, obtains monitoring instruction transport stream.
The present invention can conserve bandwidth.Only need a packet by this mode, instruction can be issued to a plurality of equipment, save instruction and issue bandwidth.Simultaneously, the invention solves when Cable Modem (CALBE MODEM) is reverse can't set up the TCP/IP communication link when asynchronous, send the test instruction problem.
Description of drawings
Fig. 1 is the flow chart of the embodiment of the invention;
Fig. 2 is the system construction drawing of the embodiment of the invention.
Embodiment
The present invention will be further described in detail below in conjunction with the drawings and specific embodiments.
As shown in Figure 1, step of the present invention is as follows:
Step S110, the instruction generation module of service end generate the monitoring instruction;
Step S120, the TS flow module of service end (being transport stream module) generates corresponding monitoring instruction TS stream (being transport stream) according to the monitoring instruction;
The full name of TS then is Transport Stream.TS stream can be supported audio frequency and video and transfer of data for a kind of data flow.It all is independently to decode that arbitrary fragment that audio frequency and video flow at TS begins;
Step S130, the Multiplexing module of service end carry out multiplexing process to monitoring instruction TS stream with TV signal TS stream and generate multiplexed signals;
Step S140, service end sends to a plurality of monitoring clients to multiplexed signals by multicast mode through hybrid fiber coax;
Step S150, the monitoring client receives multiplexed signals, handles obtaining monitoring instruction TS stream by demultiplexing;
Step S160, the monitoring client is explained monitoring instruction TS stream and is obtained the monitoring instruction.
The monitoring command information mainly comprises:
Monitoring client identifying information (single monitoring client or batch are monitored client), testing time section, test event (frequency test, spectrum measurement, program image measurement), test frequency (test interval).
The monitoring instruction comprises the monitoring client identifying information that is used to specify one or more monitoring clients, and after certain group TS stream sent, all points of network all can listen to this content.If the monitoring client judges that this TS stream is to send to oneself, can carry out demultiplexing and obtain command information, following two kinds of judgment modes are specifically arranged:
In each TS stream the PID sign indicating number is arranged all, the PID sign indicating number is a Packet Identifier(packet identifier) abbreviation, its definition is in the transmission code stream of a single-unit order or Polymera, is used to follow a specific integer values of elementary stream; Its objective is for the ease of receiving decoding end identification code fluidity matter
Method one:
The monitoring client hardware filters the monitoring instruction, and the monitoring condition detects client identification information for monitoring PID, monitoring client by software logic, if this client identification information points should the monitoring client, then monitors client and carries out demultiplexing and obtain command information;
Method two:
The monitoring client goes out to have the instruction of monitoring client identity sign by the hardware Direct Filtration, filtercondition is, multicast PID+ monitoring client identifying information, promptly monitoring client filters all TS streams, choosing PID is the TS stream that multicast mode and monitoring client identifying information point to this monitoring client, carries out demultiplexing and obtains command information.
As shown in Figure 2, be the system construction drawing of the embodiment of the invention.
A kind of digital television signal monitoring command group broadcast system 200, described system 200 comprises service end and the one or more monitoring clients that are connected by hybrid fiber coax with service end, and described service end comprises instruction generation module 210, TS flow module 220 and the multicast sending module 230 that connects successively:
Instruction generation module 210 is used for generating the monitoring instruction;
The monitoring instruction that TS flow module 220 generates according to instruction generation module 210 generates corresponding monitoring instruction TS stream;
Multicast sending module 230 also comprises Multiplexing module 231, the monitoring instruction TS stream that Multiplexing module 231 is used for that the TS flow module is generated carries out multiplexing process with TV signal TS stream and generates multiplexed signals, and multicast sending module 230 sends to a plurality of monitoring clients to multiplexed signals by multicast mode through hybrid fiber coax;
The monitoring client comprises command reception module 240 and instruction interpretation module 250:
Command reception module 240 also comprises demultiplexing module 241, carries out demultiplexing by 241 pairs of multiplexed signalss of demultiplexing module after command reception module 240 receives multiplexed signals, obtains monitoring instruction TS stream;
250 pairs of monitoring instructions of instruction interpretation module TS stream is resolved and is obtained the monitoring instruction.
Claims (7)
1. a digital television signal is monitored the command group broadcasting method, it is characterized in that described method comprises:
The instruction generation module of service end generates the monitoring instruction;
The transport stream module of service end generates corresponding monitoring instruction transport stream according to the monitoring instruction;
Service end sends to a plurality of monitoring clients to monitoring instruction transport stream by multicast mode through hybrid fiber coax;
The monitoring client receives monitoring instruction transport stream, and monitoring instruction transport stream is made an explanation obtains the monitoring instruction.
2. method of multicasting according to claim 1 is characterized in that, described method also comprises:
The Multiplexing module of service end carries out multiplexing process generation multiplexed signals to monitoring instruction transport stream and TV signal transport stream;
Service end sends to a plurality of monitoring clients to multiplexed signals by multicast mode through hybrid fiber coax;
The monitoring client receives multiplexed signals, handles obtaining monitoring instruction transport stream by demultiplexing.
3. method of multicasting according to claim 1 and 2, it is characterized in that, described monitoring instruction comprises the monitoring client identifying information that is used to specify one or more monitoring clients, after the first monitoring client received the monitoring instruction, the monitoring client identifying information of handling the monitoring instruction was specified the monitoring instruction of the first monitoring client.
4. method of multicasting according to claim 3 is characterized in that, described monitoring instruction also comprises testing time section, test event classification and test frequency.
5. method of multicasting according to claim 4 is characterized in that, described test event classification comprises frequency test, spectrum measurement or program image measurement.
6. a digital television signal is monitored the command group broadcast system, it is characterized in that, described system comprises service end and the one or more monitoring clients that are connected by hybrid fiber coax with service end, and described service end comprises instruction generation module, transport stream module and the multicast sending module that connects successively:
The instruction generation module is used for generating the monitoring instruction;
The monitoring instruction that transport stream module generates according to the instruction generation module generates corresponding monitoring instruction transport stream;
The multicast sending module sends to a plurality of monitoring clients to monitoring instruction transport stream by multicast mode through hybrid fiber coax;
Described monitoring client comprises command reception module and instruction interpretation module:
The command reception module is used for receiving monitoring instruction transport stream;
The instruction interpretation module is used for instructing transport stream to make an explanation to monitoring and obtains the monitoring instruction.
7. multi-cast system according to claim 6, it is characterized in that, described multicast sending module also comprises Multiplexing module, monitoring instruction transport stream and TV signal transport stream that described Multiplexing module is used for transport stream module is generated are carried out multiplexing process generation multiplexed signals, the multicast sending module sends to a plurality of monitoring clients to multiplexed signals by multicast mode through hybrid fiber coax, and the command reception module of monitoring client receives multiplexed signals;
Described command reception module also comprises demultiplexing module, is used for the multiplexed signals that receives is carried out demultiplexing, obtains monitoring instruction transport stream.
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| CN2010106133297A CN102036105A (en) | 2010-12-30 | 2010-12-30 | Method and system for multicasting digital TV signal monitoring instructions |
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| CN2010106133297A CN102036105A (en) | 2010-12-30 | 2010-12-30 | Method and system for multicasting digital TV signal monitoring instructions |
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| CN1996866A (en) * | 2006-06-21 | 2007-07-11 | 华为技术有限公司 | System and method for broadcast and multicast of the mobile multimedia |
| US20070286291A1 (en) * | 2006-04-29 | 2007-12-13 | Lg Electronics Inc. | Dtv transmitting system and receiving system and method of processing broadcast signal |
| CN101521832A (en) * | 2009-03-16 | 2009-09-02 | 广州杰赛科技股份有限公司 | Monitoring system and monitoring method for signal quality of television networks |
| CN101527867A (en) * | 2009-03-20 | 2009-09-09 | 广州杰赛科技股份有限公司 | Television network monitoring system and monitoring method thereof |
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- 2010-12-30 CN CN2010106133297A patent/CN102036105A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1761221A (en) * | 2005-07-21 | 2006-04-19 | 天津市德力电子仪器有限公司 | Method for building digital TV network |
| US20070286291A1 (en) * | 2006-04-29 | 2007-12-13 | Lg Electronics Inc. | Dtv transmitting system and receiving system and method of processing broadcast signal |
| CN1996866A (en) * | 2006-06-21 | 2007-07-11 | 华为技术有限公司 | System and method for broadcast and multicast of the mobile multimedia |
| CN101521832A (en) * | 2009-03-16 | 2009-09-02 | 广州杰赛科技股份有限公司 | Monitoring system and monitoring method for signal quality of television networks |
| CN101527867A (en) * | 2009-03-20 | 2009-09-09 | 广州杰赛科技股份有限公司 | Television network monitoring system and monitoring method thereof |
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Application publication date: 20110427 |