CN102932674B - The adaptive insertion system of emergency broadcast message based on digital TV network - Google Patents
The adaptive insertion system of emergency broadcast message based on digital TV network Download PDFInfo
- Publication number
- CN102932674B CN102932674B CN201110230973.0A CN201110230973A CN102932674B CN 102932674 B CN102932674 B CN 102932674B CN 201110230973 A CN201110230973 A CN 201110230973A CN 102932674 B CN102932674 B CN 102932674B
- Authority
- CN
- China
- Prior art keywords
- broadcast
- urgent
- program
- emergency
- digital television
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
The invention discloses the adaptive insertion system of a kind of emergency broadcast message based on digital TV network, for each frequency, set in advance railway digital TV programme and transmit primary signal and a railway digital TV programme transmission backup signal, described system comprises: adaptive sealed in unit, for the emergency broadcast message that is applicable to digital television transfer is ranked by predetermined policy, and emergency broadcast message is extracted with adaptation and is packaged into urgent broadcast table, the laggard line output of urgent broadcast captions urgent broadcast program; Broadcast interventional instrument, for inserting urgent broadcast table, urgent broadcast captions and urgent broadcast program at digital television program transmission backup signal; Switch, in the time having emergency broadcast message, transmits primary signal by digital television program and is switched to backup signal; The present invention can be fast, effectively and under the prerequisite that does not affect existing digital television program safe broadcast, solve the adaptation encapsulation of emergency broadcast message and broadcast insertion problem.
Description
Technical field
The present invention relates to communication technical field, relate in particular to a kind of urgent broadcast based on digital TV network and disappearCease adaptive insertion system.
Background technology
When meeting with Emergent Public Events, country cause or may cause great casualties, property to damageMistake, environmental destruction and serious social danger, while endangering public security, the donor in government or area canTo circulate a notice of emergency and counter-measure to further protect the public's life by emergency broadcast system to the publicLife property safety.
Radio and television, as the mouthpiece of Party and government, are the main channels of national release right prestige breath, are that country is prominentSend out the important component part of public accident society pre-alarming system, for national contingency management service is radio and television justiceDo not allow the responsibility of diction. The Party Central Committee, State Council pay much attention to the important work of radio and television in accident is emergentWith, require to set up as early as possible national emergent broadcast system.
But existing broadcast television transmissions network, only has the CMMB (CMMB) can be byEmergency broadcast message is adaptive to be encapsulated and is inserted in the middle of broadcasting signal, there is no at present very for digital TV networkTechnical scheme is inserted in the adaptive encapsulation of good emergency broadcast message and broadcast.
Summary of the invention
In view of above-mentioned analysis, the present invention aims to provide a kind of emergency broadcast message based on digital TV networkAdaptive insertion system, there is no well promptly extensively for digital TV network at present in order to solve in prior artThe problem of technical scheme is inserted in the adaptive encapsulation of broadcast message and broadcast.
Object of the present invention is mainly achieved through the following technical solutions:
The invention provides the adaptive encapsulation of a kind of emergency broadcast message based on digital TV network and broadcast and insertSystem, for each frequency, sets in advance railway digital TV programme and transmits primary signal and a railway digitalTV programme transmission backup signal, described system comprises:
Adaptive sealed in unit, for being undertaken by predetermined policy the emergency broadcast message that is applicable to digital television transferQueue up, and to emergency broadcast message extracts with adaptation be packaged into urgent broadcast table, urgent broadcast captions are tightThe laggard line output of anxious broadcast program;
Broadcast interventional instrument, for insert urgent broadcast table, tight at digital television program transmission backup signalAnxious broadcast subtitle and urgent broadcast program;
Switch, in the time having emergency broadcast message, transmits primary signal by digital television program and is switched toBackup signal.
Further, described switch also for, emergency broadcast message send finish after, by DTVProgram transmission backup signal is switched to primary signal.
Further, described adaptive sealed in unit specifically comprises:
Cache module, for all emergency broadcast messages that different distribution platform receiving equipments are sent by predeterminedThe strategy buffer memory of ranking;
Resolve package module, be packaged into urgent broadcast for emergency broadcast message being resolved to extraction and adaptationTable, urgent broadcast captions and urgent broadcast program;
Sending module, for by encapsulation after urgent broadcast table, urgent broadcast captions and urgent broadcast programExport to broadcast interventional instrument, simultaneously trigger control module;
Control module, for sending switching command, controls switch digital television program is transmitted to primary signalBe switched to backup signal.
Further, described parsing package module specifically for, what urgent broadcast distribution platform was sent is allEmergency broadcast message is resolved, and therefrom extracts the emergency broadcast message that is applicable to digital television transfer, adaptationBe packaged into the urgent broadcast table that is applicable to digital television program signal transmission; From being applicable to the urgent of digital television transferIn broadcast, extract the caption information that is applicable to screen display, adaptation is packaged into urgent broadcast captions; From suitableClose in the emergency broadcast message of digital television transfer and extract urgent broadcast program, adaptation is packaged into and is applicable to numeralThe urgent broadcast program of TV programme signal transmission.
Further, described adaptive sealed in unit the is pre-configured corresponding device code of all frequencies, instituteState sending module specifically for, judge according to the device code of carrying in emergency broadcast message and judge urgent broadcastThe frequency that message need send, broadcast interventional instrument corresponding to frequency then sending to need sends tight after encapsulationAnxious broadcast table, urgent broadcast captions and urgent broadcast program, simultaneously trigger control module.
Further, described switch also for, the work state information of this equipment is fed back to distribution platformReceiving equipment.
Further, described broadcast interventional instrument also for, by the work state information of this equipment feed back to send outCloth platform receiving equipment.
Beneficial effect of the present invention is as follows:
The emergency broadcast message that the present invention transmits needs carries out being inserted into existing DTV joint after adaptation encapsulationIn order signal transmission, can be fast, effectively and do not affect existing digital television program safe broadcast beforePut and solve the adaptation encapsulation of emergency broadcast message and broadcast insertion problem.
Other features and advantages of the present invention will be set forth in the following description, and, part from explanationIn book, become apparent, or understand by implementing the present invention. Object of the present invention and other advantages canRealize and obtain by specifically noted structure in write description, claims and accompanying drawing.
Brief description of the drawings
Fig. 1 is the structural representation of system described in the embodiment of the present invention;
Fig. 2 is described in the embodiment of the present invention in system, the structural representation of adaptive sealed in unit;
Fig. 3 is the structural representation of the urgent broadcast table in the embodiment of the present invention;
Fig. 4 is the schematic diagram that is related to of PSI in the embodiment of the present invention and MPEG-2 stream.
Detailed description of the invention
Specifically describe the preferred embodiments of the present invention below in conjunction with accompanying drawing, wherein, accompanying drawing forms the application onePart, and together with embodiments of the present invention for explaining principle of the present invention. For purpose of clarity and simplification,In the time that it may make theme of the present invention smudgy, will omit in device described herein known function andIllustrating in detail of structure.
As shown in Figure 1, Fig. 1 is the structural representation of system described in the embodiment of the present invention, for each frequency,Set in advance railway digital TV programme and transmit primary signal TS and railway digital TV programme transmission backup letterNumber TS ', when normality, TS ' is copying of TS, when the state of emergency, TS ' has inserted urgent broadcast table, promptly wideBroadcast program and urgent broadcast captions.
Native system includes an adaptive sealed in unit, in addition, for each frequency, at least comprises: oneBroadcast interventional instrument and a switch, wherein,
(1) adaptive sealed in unit, for pressing predetermined plan to the emergency broadcast message that is applicable to digital television transferSlightly rank, and emergency broadcast message is extracted with adaptation and is packaged into urgent broadcast table, urgent broadcastThe laggard line output of captions urgent broadcast program;
As shown in Figure 2, the structural representation that Fig. 2 is adaptive sealed in unit, specifically can comprise: buffer memory mouldPiece, parsing package module, sending module and control module, wherein,
Cache module, receiving emergency broadcast message, comprises higher level, the corresponding levels and subordinate's urgent broadcast distribution platformDeng the emergency broadcast message of separate sources, and according to the ginseng such as type and rank of informed source and message selfNumber by predetermined policy to the message buffer memory of ranking;
Resolve package module, to all emergency broadcast messages resolves extraction and adaptation be packaged into urgent broadcastTable, urgent broadcast captions and urgent broadcast program; The concrete encapsulation process of resolving comprises: resolve package moduleAll emergency broadcast messages that urgent broadcast distribution platform is sent are resolved, and therefrom extract and are applicable to numeralThe emergency broadcast message of television transmission, adaptation is packaged into the urgent broadcast that is applicable to digital television program signal transmissionTable, urgent broadcast list structure is as shown in Figure 3; From the emergency broadcast message of applicable digital television transfer, extractThe caption information that goes out to be applicable to screen display, adaptation is packaged into urgent broadcast captions; From being applicable to digital television transferEmergency broadcast message in extract urgent broadcast program, adaptation is packaged into and is applicable to digital television program transmission letterNumber urgent broadcast program.
Sending module, by the urgent broadcast table after encapsulation, urgent broadcast captions and the output of urgent broadcast programGive and broadcast interventional instrument; Be exactly specifically adaptive sealed in unit is pre-configured all frequencies correspondingDevice code, sending module first judges that judging urgent broadcast according to the device code of carrying in emergency broadcast message disappearsBreath needs the frequency sending, and broadcast interventional instrument corresponding to frequency then sending to need sends urgent after encapsulationBroadcast table, urgent broadcast captions and urgent broadcast program, simultaneously trigger control module.
Control module, for sending switching command, controls switch digital television program is transmitted to primary signalBe switched to backup signal;
(2) broadcast interventional instrument, for inserting urgent broadcast at digital television program transmission backup signalTable, urgent broadcast captions and urgent broadcast program; Be exactly to send for adaptive sealed in unit specificallyUrgent broadcast table, broadcast interventional instrument automatically insert, be automatically to complete here, have urgent broadcast table just to enterRow inserts; The urgent broadcast captions that send for adaptive sealed in unit, comprise caption content and insert while beginningBetween and the end time, original program is decoded as to baseband signal, then in baseband signal, insert captions,Rear coding output; Send urgent broadcast program for adaptive sealed in unit, according to PSI (Program Specific Information)The relation of each table, analyzes PAT (Program Association Table) and PMT (Program Map Table), resolvesPAT obtains replacing the PID Packet Identifier of program, then resolve pmt table obtain replacing in program video andThe PID Packet Identifier of audio frequency, by the Audio and Video Basic Flow of this program replace with urgent broadcast program video andAudio frequency Basic Flow.
Wherein, PSI and MPEG-2 (digital television program transmission) stream relation as shown in Figure 4, PSI numberAccording to the information that receiver can be configured is automatically provided, separate for the different program streams to multiplex streamMultiplexing and decoding. PSI information is made up of Four types table, and every class table transmits by section:
A) PAT (Program Association Table)
For each multiplexing road business, PAT provide corresponding PMT position (transport stream data packetThe value of PID Packet Identifier PID), give the position of NIT (network information table) simultaneously;
CAT (CAT Conditional Access Table)
CAT provides in multiplex stream conditional receiving system for information about. These information belong to exclusive data,And depend on condition receiving system. In the time having EMM, it has also comprised the position that EMM flows;
C) PMT (Program Map Table)
PMT has identified and has indicated the position of the stream that forms every road business, and the PCR of Ji Mei road business is (when programClock reference) position of field;
D) NIT network information table
Put forward the information of Physics network.
PAT, CAT in PSI, PMT only provide the letter of the multiplex stream (existing multiplex stream) at its placeBreath, content specifies by Moving Picture Experts Group-2, NIT table is private table, but with the transmission stream packets PID of this tableValue illustrates in pat table, and it still needs to meet the segmental structure of Moving Picture Experts Group-2 definition.
Broadcasting interventional instrument also needs the work state information of this equipment to feed back to distribution platform receiving equipment,Understand to facilitate distribution platform receiving equipment the current state of broadcasting interventional instrument.
It should be noted that, detect that when broadcasting interventional instrument TSYi road, without input signal, now can not illustrateCarry out insert handling, need to automatically quit work, do not export any signal;
(3) ASI (AsynchronousSerialInterface, Asynchronous Serial Interface) switch, according toNeed, between TS signal and TS ' signal, switch, in the time having emergency broadcast message, by numeral electricityBe switched to backup signal depending on the primary signal of program transmission; After emergency broadcast message transmission finishes, by numeral electricityBe switched to primary signal depending on program transmission backup signal.
ASI switch also needs the work state information of this equipment to feed back to distribution platform receiving equipment, with sideJust distribution platform receiving equipment is understood the current state of broadcasting interventional instrument.
The switching of ASI switch support program, manual switchover and automatic switchover, when after program switching or manual switchoverDetecting that target input port no signal should automatically switch has got back to signal one tunnel.
In sum, the embodiment of the present invention provides a kind of emergency broadcast message based on digital TV network suitableJoin insertion system, the present invention, in conjunction with existing digital television front-end system feature, does not need digital TV network fortuneThe business of battalion upgrading multiplexer can complete the adaptation encapsulation of emergency broadcast message and broadcast and insert. The present invention existsOn conceptual design, take into full account the impact on digital About The Safety Of TV Broadcast, can ensure not affect existing numberThe safe broadcast of word TV programme is that prerequisite completes the adaptation encapsulation of emergency broadcast message and broadcasts and insert. ThisThe bright problem of emergency broadcast message in multiple frequencies transmissions that solved.
The above, be only preferably detailed description of the invention of the present invention, but not office of protection scope of the present inventionBe limited to this, any be familiar with those skilled in the art the present invention disclose technical scope in, can be easilyThe variation of expecting or replacement, within all should being encompassed in protection scope of the present invention. Therefore, protection of the present inventionScope should be as the criterion with the protection domain of claims.
Claims (5)
1. the adaptive insertion system of the emergency broadcast message based on digital TV network, is characterized in that pinTo each frequency, set in advance railway digital TV programme and transmit primary signal and railway digital TV programmeTransmission backup signal, described system comprises:
Adaptive sealed in unit, for pressing predetermined policy to all emergency broadcast messages that are applicable to digital television transferRank, and the emergency broadcast message of queuing up is extracted with adaptation and is packaged into urgent broadcast table, urgentBroadcast subtitle and the laggard line output of urgent broadcast program are given and are broadcasted interventional instrument;
Broadcast interventional instrument, for insert urgent broadcast table, tight at digital television program transmission backup signalAnxious broadcast subtitle and urgent broadcast program;
Switch, in the time having emergency broadcast message, transmits primary signal by digital television program and is switched toDigital television program transmission backup signal;
Described adaptive sealed in unit specifically comprises:
Cache module, for all emergency broadcast messages that different distribution platform receiving equipments are sent by predeterminedThe strategy buffer memory of ranking;
Resolve package module, for to queue up emergency broadcast message resolves extraction and adaptation be packaged into tightlyAnxious broadcast table, urgent broadcast captions and urgent broadcast program;
Sending module, for by encapsulation after urgent broadcast table, urgent broadcast captions and urgent broadcast programExport to broadcast interventional instrument, simultaneously trigger control module;
Control module, in the time having emergency broadcast message, sends switching command, controls switch by numeralTV programme are transmitted primary signal and are switched to backup signal;
Wherein, the corresponding device code of all frequencies that described adaptive sealed in unit is pre-configured, described sending outSend module specifically for, judge according to the device code of carrying in emergency broadcast message and judge emergency broadcast messageNeed the frequency sending, broadcast interventional instrument corresponding to frequency sending to need send urgent broadcast table after encapsulation,Urgent broadcast captions and urgent broadcast program, simultaneously trigger control module.
2. system according to claim 1, is characterized in that, described switch also for, promptlyAfter broadcast sends and finishes, digital television program transmission backup signal is switched to digital television program transmissionPrimary signal.
3. system according to claim 1, is characterized in that, described parsing package module specifically for,All emergency broadcast messages that urgent broadcast distribution platform is sent are resolved, and therefrom extract and are applicable to numeralThe emergency broadcast message of television transmission, adaptation is packaged into the urgent broadcast that is applicable to digital television program signal transmissionTable; From the emergency broadcast message of applicable digital television transfer, extract the caption information that is applicable to screen display,Adaptation is packaged into urgent broadcast captions; From the emergency broadcast message of applicable digital television transfer, extract urgentBroadcast program, adaptation is packaged into the urgent broadcast program that is applicable to digital television program signal transmission.
4. system according to claim 1 and 2, is characterized in that, described switch also for, willThe work state information of this equipment feeds back to distribution platform receiving equipment.
5. system according to claim 1, is characterized in that, described broadcast interventional instrument also for,The work state information of this equipment is fed back to distribution platform receiving equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110230973.0A CN102932674B (en) | 2011-08-12 | 2011-08-12 | The adaptive insertion system of emergency broadcast message based on digital TV network |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110230973.0A CN102932674B (en) | 2011-08-12 | 2011-08-12 | The adaptive insertion system of emergency broadcast message based on digital TV network |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102932674A CN102932674A (en) | 2013-02-13 |
| CN102932674B true CN102932674B (en) | 2016-05-11 |
Family
ID=47647358
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110230973.0A Expired - Fee Related CN102932674B (en) | 2011-08-12 | 2011-08-12 | The adaptive insertion system of emergency broadcast message based on digital TV network |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102932674B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105471533B (en) * | 2015-12-31 | 2018-11-16 | 深圳Tcl数字技术有限公司 | The playback method and digital TV terminal of DTV emergent broadcast |
| CN114449317B (en) * | 2021-12-27 | 2023-06-30 | 福建新大陆通信科技股份有限公司 | Emergency broadcasting method for digital television |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1722801A (en) * | 2004-07-15 | 2006-01-18 | Lg电子株式会社 | Emergency alert message data structure, emergency alert message processing method and broadcast receiver |
| CN101188668A (en) * | 2006-11-22 | 2008-05-28 | Lg电子株式会社 | Method of transmitting broadcast signal, method of processing broadcast signal and apparatus for the same |
| CN101719923A (en) * | 2009-12-11 | 2010-06-02 | 北京中科大洋科技发展股份有限公司 | System and method for broadcasting disaster-tolerant backup |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9154636B2 (en) * | 2008-12-18 | 2015-10-06 | Continental Automotive Systems, Inc | System and method for emergency reporting |
-
2011
- 2011-08-12 CN CN201110230973.0A patent/CN102932674B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1722801A (en) * | 2004-07-15 | 2006-01-18 | Lg电子株式会社 | Emergency alert message data structure, emergency alert message processing method and broadcast receiver |
| CN101188668A (en) * | 2006-11-22 | 2008-05-28 | Lg电子株式会社 | Method of transmitting broadcast signal, method of processing broadcast signal and apparatus for the same |
| CN101719923A (en) * | 2009-12-11 | 2010-06-02 | 北京中科大洋科技发展股份有限公司 | System and method for broadcasting disaster-tolerant backup |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102932674A (en) | 2013-02-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102932672B (en) | Emergency broadcast message adaptation insertion system based on digital TV network | |
| USRE46436E1 (en) | Method for receiving broadcasting signal and broadcasting receiver | |
| CA2815707C (en) | Method of providing an emergency alert service via a mobile broadcasting and apparatus therefor | |
| US8938751B2 (en) | Method and system for placing inserts into a broadcast television signal | |
| KR101797497B1 (en) | Method and apparatus for processing non-real-time broadcast service and content transmitted by broadcast signal | |
| CN103533311A (en) | High-definition network camera device | |
| KR20190068477A (en) | ATSC 3.0 integrated signal generator | |
| CN102932674B (en) | The adaptive insertion system of emergency broadcast message based on digital TV network | |
| US20100128800A1 (en) | Method and Apparatus for Closed Caption Transcoding | |
| WO2008016213A1 (en) | Digital broadcasting system and method | |
| US9055316B2 (en) | Method and system for inserting digital video effects into a video stream at a multiplexing device after routing | |
| US7934228B2 (en) | Method and system for marking video signals for identification | |
| JP6496068B1 (en) | Broadcast signal transmitter / receiver | |
| KR20150090432A (en) | Broadcasting transmission apparatus and method thereof for simulcast broadcasting | |
| US8239913B2 (en) | Method and system for inserting digital video effects into a video stream in redundant paths before routing | |
| US9247285B2 (en) | Method and system for monitoring a content signal | |
| US20080244663A1 (en) | Method and system for inserting digital video effects into a video stream using a bypass router | |
| US20080240258A1 (en) | Method and system for generating uplink signals from a ground segment | |
| JP7123832B2 (en) | Broadcast signal transmitter/receiver | |
| KR101920304B1 (en) | Method and apparatus for providing digital broadcast signal | |
| EP2283654B1 (en) | System and devices for distributing content in a hierarchical manner | |
| WO2008016212A1 (en) | Digital broadcasting system and method | |
| KR100983338B1 (en) | Apparatus and method for signalling automatic emergency alert service and computer-readable medium having thereon program performing function embodying the same | |
| WO2008016211A1 (en) | Digital broadcasting system and method | |
| KR100600819B1 (en) | Digital data broadcasting emission system and control method for multiplexing program construction information |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160511 Termination date: 20210812 |