CN102957941A - Program content broadcasting method and digital television front end - Google Patents
Program content broadcasting method and digital television front end Download PDFInfo
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- CN102957941A CN102957941A CN2012102488307A CN201210248830A CN102957941A CN 102957941 A CN102957941 A CN 102957941A CN 2012102488307 A CN2012102488307 A CN 2012102488307A CN 201210248830 A CN201210248830 A CN 201210248830A CN 102957941 A CN102957941 A CN 102957941A
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Abstract
The embodiment of the invention discloses a program content broadcasting method which comprises the following steps of: when a program content update request sent by a set-top box is received, judging whether the program content needs updating; if so, writing the program content to be updated into a program file; encapsulating the program file into a program data packet; and broadcasting the program data packet to the set-top box. Through the invention, the set-top box does not need to analyze a complicated PSI/SI (program specific information/service information) table in the front end code stream, directly analyzes the data packet formed by encapsulating the file carrying the program content, and displays the program content to a user, thereby improving the working efficiency and transmission reliability of the system.
Description
Technical field
The present invention relates to digital TV field, relate in particular to broadcasting method and the digital TV front-end of programme content.
Background technology
Digital Television be one from programme acquisition, program making program transmission until user side all with the end to end system of digital form processing signals.Adopt based on the broadcast type of DVB technical standard and interactive digital TV that the advanced user administrative skill can with the quality of programme content and quantity be done perfectly and select and better program quality effect for the user brings more program, digital television system can transmit multiple business, such as high definition TV, standard definition television, interactive TV and data service etc.Compare with simulated television, Digital Television has the advantage of picture-and-sound quality height, program capacity large (being more than 10 times of analog television transmission passage program capacity).
In the prior art, the process that programme information obtains is: set-top box is locked frequency point at first, then search for front end code stream PSI/SI (Program Specific Information/Service Information, Program Specific Information/business information) (the Network Information Table of the NIT in, network information table), obtain the frequency tabulation of whole network, obtain PAT(Program Association Table according to corresponding frequency again, Program Association Table), obtain PMT (the Program Map Table of each program behind the parsing PAT, Program Map Table), from PMT, can obtain the audio frequency and video of program, after having searched for, obtains PMT SDT (Service Description Table, SDT Service Description Table), SDT provides the data of program, for example programm name in the descriptive system, the information such as program provider.Can find out from said process, obtain the programme content according to above-mentioned steps, the whole receiving and analyzings of all data of PSI/SI could must be illustrated the programme content after complete, efficient is lower, and relevance is large between each table, a link is made mistakes and can be affected the reception ﹠ disposal of next stage, and reliability is not high.
Summary of the invention
Embodiment of the invention technical problem to be solved is, a kind of broadcasting method of programme content is provided.Can overcome the shortcoming of inefficiency and poor reliability in the prior art.
In order to solve the problems of the technologies described above, the embodiment of the invention provides a kind of broadcasting method of programme content, comprising:
When receiving the programme content update request of set-top box transmission, judge whether the programme content needs to upgrade, and is programme content to be updated to be write the programme file of predetermined format if be judged as;
Described programme file is packaged into the playbill data bag;
Broadcast described playbill data bag to described set-top box.
Wherein, describedly need judging whether to upgrade, is that the step that programme content to be updated is write the programme file of predetermined format comprises if be judged as:
Whether the version number of the programme file that carries in the programme update request that relatively set-top box sends is different with local program monofile version number, if comparative result is yes, then programme content to be updated write the programme file of predetermined format.
Wherein, the described step that described programme file is packaged into the playbill data bag comprises:
Judge that the size of programme file whether greater than predetermined value, is then described programme file to be divided into several files by pre-defined rule if be judged as;
Each file after will cutting apart is packaged into packet.
Wherein, described described playbill data bag to the step of described set-top box of broadcasting comprises:
Described playbill data cladding is used in the data broadcast code stream;
Adopt the OC agreement of DSM-CC standard that described playbill data bag is broadcast to described set-top box.
Wherein, the form of described programme file is the JSON form.
Correspondingly, the embodiment of the invention also provides a kind of digital TV front-end, comprising:
Receiver module is used for receiving the programme content update request that set-top box sends;
Judge module is used for need judging whether to upgrade, if be judged as is, programme content to be updated is write the programme file of predetermined format, otherwise, do not process;
Package module is used for described programme file is packaged into the playbill data bag;
Broadcast module, be used for broadcasting described playbill data bag to described set-top box.
Described judge module comprises:
Comparing unit, whether the version number that is used for the programme file that programme update request that set-top box relatively sends carries is different with local program monofile version number, if comparative result is yes, then programme content to be updated is write the programme file of predetermined format.
Wherein, described package module comprises:
Cutting unit, whether the size that is used for judging the programme file is then described programme file to be divided into several files by pre-defined rule if be judged as greater than predetermined value;
Encapsulation unit, each file after being used for cutting apart is packaged into packet.
Wherein, the described module of broadcasting comprises:
Multiplexing Unit is used for the data broadcast code stream is used in described playbill data cladding;
The OC unit is used for adopting the OC agreement of DSM-CC standard that described playbill data bag is broadcast to described set-top box.
Implement the embodiment of the invention, have following beneficial effect:
Set-top box does not need to resolve complicated PSI/SI table, directly resolves the file that carries the programme content and encapsulates the packet that forms, and just can obtain the content of programme, and intermediate link is few, and efficient is high.Do not have relevance between each packet of simultaneously digital front-end transmission, a packet receives to make mistakes and does not affect the reception of other packets, and reliability is high.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, the below will do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art, apparently, accompanying drawing in the following describes only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the schematic flow sheet of embodiment of the broadcasting method of a kind of programme content of the present invention;
Fig. 2 is the schematic flow sheet of another embodiment of the broadcasting method of a kind of programme content of the present invention;
Fig. 3 is the structural representation of the embodiment of a kind of digital TV front-end of the present invention;
Fig. 4 is the structural representation of another embodiment of a kind of digital TV front-end of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that obtains under the creative work prerequisite.
Referring to Fig. 1, be the schematic flow sheet of the embodiment of the broadcasting method of a kind of programme content of the present invention, the method comprises:
S101, the programme content update request that receiving set up box sends.
Concrete, set-top box sends a programme update request from the trend digital TV front-end after starting shooting successfully, perhaps the user uses a teleswitch in watching the program process and thinks that digital TV front-end sends a programme update request, in case digital TV front-end receives this update request, designation number television headend execution in step S102.
S102, whether the programme content needs to upgrade.
Concrete, the additional information of carrying in the update inquiry information of digital TV front-end by the set-top box feedback need to judge whether to upgrade, be update time, version number of programme file etc. during described additional information implementation, whether digital TV front-end is consistent with described additional information by the relevant information of comparison self programme file, if inconsistent then definite set-top box need to be upgraded the content of programme file.
S103 writes programme content to be updated the programme file of predetermined format.
Concrete, the programme content generally includes channel designation, programm name, program classification, program reproduction time and brief introduction etc., can select as required, when being judged as among the S102 when being, above-mentioned programme content is write the programme file of predetermined format, the programme file can be text, XML (eXtensible Markup Language, extend markup language) file or html file etc., is not restricted during implementation.
S104 does not process.Be judged as among the S102 when no, digital TV front-end does not deal with.
S105 is packaged into the playbill data bag with the programme file.
Concrete, the programme file adopts predetermined packaged type to be packaged into the playbill data bag, and the file that for example carries the programme content adopts MPE (Multi-Protocol Encapsulation, multi-protocol encapsulation) mode to encapsulate, and forms the IP packet.In order to reduce the complexity of transmission course, a complicated catalogue can be packaged into a file during implementation, then packed file is divided into piece, every block file is packaged into respectively packet and numbering.
S106 broadcasts the playbill data bag to set-top box.
The broadcasting method of the programme content that present embodiment provides, can will carry the file of programme content be packaged into packet and broadcast to set-top box and resolve, need not to make up complicated PSI/SI table and transfer to set-top box, alleviated greatly the burden of digital TV front-end, improved operating efficiency.
Referring to Fig. 2, the schematic flow sheet of another embodiment of the broadcasting method of a kind of programme content of the present invention, the method comprises:
S201, the programme content update request that receiving set up box sends.
Concrete, set-top box sends a programme update request from the trend digital TV front-end after starting shooting successfully, perhaps the user uses a teleswitch in watching the program process and sends a programme update request to digital TV front-end, in case digital TV front-end receives this update request, designation number television headend execution in step S202.
S202, whether the programs of set-top box single version is number different with this locality.
Concrete, the programme file update information that carries in the update inquiry information of digital TV front-end by the set-top box feedback need to judge whether to upgrade, whether digital TV front-end is consistent with described additional information by the relevant information of comparison self programme file, if inconsistent then definite set-top box need to be upgraded the content of programme file.For example, the version number of programme file is v1.1 in the update inquiry information of set-top box feedback, the version number of digital TV front-end programme file is v1.2, and the version number of programme file is inconsistent in local program monofile and the set-top box, then determines to upgrade the programme file in the set-top box.
S203 writes programme content to be updated the programme file of JSON form.
Concrete, the programme content generally includes channel designation, programm name, program classification, program reproduction time and brief introduction etc., can select as required, above-mentioned programme content is write the programme file of predetermined format, preferred editing program list content is saved to JSON(JavaScript Object Notation herein) in the file of form, general programme content all is that program is classified, classification is organized, can be described with tree or structure of arrays, the file of JSON form is understood to array in most of language, so adopts the file of JSON can be better the content of programme to be described in the present embodiment.Simultaneously, in the situation of knowing in advance the JSON structured file, the transmission of JSON file and analyzing efficiency are very high.
The single content of hypothetical program writes in the serviceinfo.json file, this document comprises transport stream descriptor and programme descriptor, wherein the transport stream descriptor comprises transport stream identification symbol, network identifier, original network identification symbol, program frequency point, modulation system and symbol rate, comprise in the programme descriptor with the transport stream descriptor in identical transport stream identification symbol, network identifier, original network identification symbol, also comprise simultaneously programm name, program sequence number and program data packets PID(Packet IDdentifier, Packet Identifier) etc. essential information.
S204 does not process.Be judged as among the S202 when no, digital TV front-end is not done to upgrade and is processed.
S205, whether the size of programme file is greater than predetermined value.
Concrete, generally speaking, data broadcast sends the finite capacity of data, can only send the file of pre-sizing, if surpass the file of pre-sizing, then needs large file division is become the equal file of some volumes, sends in the data broadcast in order to be adapted at.In order to reduce the reliability of transmission course, each file after cutting apart can be packaged into respectively packet and numbering during implementation.
S206 is divided into several files with the programme file according to pre-defined rule.
Data transfer layer has the characteristic of MTU, it has limited the maximum length of packet, different network types all is preset with a higher limit, if surpassing this higher limit, packet will cause packet to transmit unsuccessfully, in the embodiment of the invention, judge at first whether packet to be sent surpasses pre-sizing, if above several packets that packet are divided into less than pre-sizing, and each packet is numbered, in order to after the set-top box termination is received, be reassembled into a complete packet, improved the reliability of transmission.
When S205 judges structure when being, execution S206.
S207 is packaged into packet with file.
When S206 is judged as when no, carry out S207, namely directly the programme file is packaged into packet.Concrete, the programme file adopts predetermined packaged type to be packaged into the playbill data bag, and the file that for example carries the programme content adopts MPE (Multi-Protocol Encapsulation, multi-protocol encapsulation) mode to encapsulate, and forms the IP packet.
S208 uses the cladding of programme file data in the data broadcast code stream
S209 broadcasts the playbill data bag to set-top box according to OC (Object Carousel, the object carousel) agreement of DSM-CC (Digital Storage Media-Command and Control, digital storage media-order and control) standard.
The object carousel agreement is mainly used to transmit the tree data, it has defined one and has overlapped the tissue that complete data structure is come normative content on the basis of data carousel agreement, for example gateway object, directory object, file object, flow object, or event object etc., by these objects, just can set up a tree or a forest, aspect the efficiency of transmission of tree-type structure data, the object carousel agreement has some superiority, and programme information is generally a kind of data of tree, is fit to very much adopt the data carousel agreement to broadcast.
The method of obtaining programme information that present embodiment provides, the programme content is write the JSON file and file is packaged into the playbill data bag, broadcast the playbill data bag to set-top box by the data carousel agreement, set-top box parses programme content in the playbill data bag, the structure of having avoided complicated PSI/SI to show has improved the efficient of digital TV front-end and the stability of work.
Referring to Fig. 3, be the structural representation of embodiment of a kind of digital TV front-end of invention, this digital TV front-end comprises:
Concrete, receiver module 11 receiving set up box send a programme update request from the trend digital TV front-end after starting shooting successfully, perhaps the user uses a teleswitch in watching the program process and sends a programme update request to digital TV front-end, in case receiver module 11 is received this update request, indication judge module 12 is judged.
The additional information of carrying in the update inquiry information of judge module 12 by the set-top box feedback need to judge whether to upgrade, be update time, version number of programme file etc. during described additional information implementation, whether judge module 12 is consistent with described additional information by the relevant information that compares the programs of set-top box monofile, if inconsistent then definite set-top box need to be upgraded the content of programme file.The programme content generally includes channel designation, programm name, program classification, program reproduction time and brief introduction etc., can select as required, judge module 12 writes above-mentioned programme content the programme file of predetermined format after definite programs of set-top box monofile need to upgrade, the programme file can be text, XML file and html file etc., is not restricted during implementation.
Concrete, package module 12 is packaged into the playbill data bag with the programme file of predetermined format, the file that for example carries the programme content adopts MPE (Multi-Protocol Encapsulation, multi-protocol encapsulation) mode to encapsulate, and forms the IP packet.Broadcast module 14, be used for broadcasting described playbill data bag to described set-top box according to predetermined protocol.
The digital TV front-end that present embodiment provides, can will carry the file of programme information be packaged into packet and broadcast to set-top box and resolve, need not to make up complicated PSI/SI table and transfer to set-top box, alleviated greatly the burden of digital TV front-end, improved operating efficiency.
Referring to Fig. 4, be the structural representation of another embodiment of a kind of digital TV front-end of the present invention, this digital TV front-end 1 comprises equally:
Wherein, judge module 12 comprises:
Comparing unit 121, whether the version number that is used for the programme file that programme update request that set-top box relatively sends carries is different with local program monofile version number, if comparative result is yes, then programme content to be updated is write the programme file of predetermined format.
Concrete, the additional information of carrying in the update inquiry information of comparing unit 121 by the set-top box feedback need to judge whether to upgrade, described additional information is programs of set-top box monofile version number, whether judge module 12 is inconsistent by the programme fileversion number that compares programs of set-top box monofile version number and digital TV front-end, if comparative result is yes, then definite set-top box need to be upgraded the content of programme file.The programme content generally includes channel designation, programm name, program classification, program reproduction time and brief introduction etc., can select as required, comparing unit 121 writes above-mentioned programme content the programme file of JSON form after definite programs of set-top box monofile need to upgrade, JSON is structure of arrays, so adopts the file of JSON can be better the content of programme to be described in the present embodiment.Simultaneously, in the situation of knowing in advance the JSON structured file, the transmission of JSON file and analyzing efficiency are very high.
Wherein, package module 13 comprises:
Cutting unit 131, whether the size that is used for judging the programme file is then described programme file to be divided into several files by pre-defined rule if be judged as greater than predetermined value.
Data transfer layer has the characteristic of MTU, it has limited the maximum length of packet, different network types all is preset with a higher limit, if surpassing this higher limit, packet will cause packet to transmit unsuccessfully, in the embodiment of the invention, judge at first whether packet to be sent surpasses pre-sizing, if above several packets that packet are divided into less than pre-sizing, and each packet is numbered, in order to after the set-top box termination is received, be reassembled into a complete packet, improved the reliability of transmission.
Wherein, broadcasting module 14 comprises:
Multiplexing Unit 141 is used for the data broadcast code stream is used in described playbill data cladding;
The object carousel agreement is mainly used to the transmission structure data, it has defined one and has overlapped the tissue that complete data structure is come normative content on the basis of data carousel agreement, for example gateway object, directory object, file object, flow object, or event object etc., by these objects, just can set up a tree or a forest, aspect the efficiency of transmission of tree-type structure data, the object carousel agreement has some superiority, and programme information is generally the data of a kind of tree or structure of arrays, is fit to very much adopt the data carousel agreement to broadcast.
The digital TV front-end that present embodiment provides, can will carry the JSON file of programme content be packaged into the playbill data bag and broadcast to set-top box and resolve, need not to make up complicated PSI/SI table and transfer to set-top box, alleviate greatly the burden of digital TV front-end, improved operating efficiency.
One of ordinary skill in the art will appreciate that all or part of flow process that realizes in above-described embodiment method, to come the relevant hardware of instruction to finish by computer program, described program can be stored in the computer read/write memory medium, this program can comprise the flow process such as the embodiment of above-mentioned each side method when carrying out.Wherein, described storage medium can be magnetic disc, CD, read-only store-memory body (Read-Only Memory, ROM) or store-memory body (Random Access Memory, RAM) etc. at random.
Above disclosed only is a kind of preferred embodiment of the present invention, certainly can not limit with this interest field of the present invention, one of ordinary skill in the art will appreciate that all or part of flow process that realizes above-described embodiment, and according to the equivalent variations that claim of the present invention is done, still belong to the scope that invention is contained.
Claims (10)
1. the broadcasting method of a programme content is characterized in that, comprising:
When receiving the programme content update request of set-top box transmission, judge whether the programme content needs to upgrade, and is that programme content to be updated is write the programme file if be judged as;
Described programme file is packaged into the playbill data bag;
Broadcast described playbill data bag to described set-top box.
2. broadcasting method as claimed in claim 1 is characterized in that, describedly judges whether the programme content needs to upgrade, and is that the step that programme content to be updated is write the programme file comprises if be judged as:
Whether the version number of the programme file that carries in the programme update request that relatively set-top box sends is different with local program monofile version number, if comparative result is yes, then programme content to be updated write the programme file of predetermined format.
3. broadcasting method as claimed in claim 1 or 2 is characterized in that, the described step that described programme file is packaged into the playbill data bag comprises:
Judge that the size of programme file whether greater than predetermined value, is then described programme file division to be become several files if be judged as;
Each file after will cutting apart is packaged into packet.
4. broadcasting method as claimed in claim 3 is characterized in that, described described playbill data bag to the step of described set-top box of broadcasting comprises:
Described playbill data cladding is used in the data broadcast code stream;
Adopt the OC agreement of DSM-CC standard that described playbill data bag is broadcast to described set-top box.
5. broadcasting method as claimed in claim 4 is characterized in that, the form of described programme file is the JSON form.
6. a digital TV front-end is characterized in that, comprising:
Receiver module is used for receiving the programme content update request that set-top box sends;
Judge module is used for judging whether the programme content needs to upgrade, and is that programme content to be updated is write the programme file if be judged as;
Package module is used for described programme file is packaged into the playbill data bag;
Broadcast module, be used for broadcasting described playbill data bag to described set-top box.
7. digital TV front-end as claimed in claim 6 is characterized in that, described judge module comprises:
Comparing unit, whether the version number that is used for the programme file that programme update request that set-top box relatively sends carries is different with local program monofile version number, if comparative result is yes, then programme content to be updated write the programme file.
8. such as claim 6 or 7 described digital TV front-ends, it is characterized in that described package module comprises:
Cutting unit, whether the size that is used for judging the programme file is then described programme file to be divided into several files by pre-defined rule if be judged as greater than predetermined value;
Encapsulation unit, each file after being used for cutting apart is packaged into packet.
9. digital TV front-end as claimed in claim 8 is characterized in that, the described module of broadcasting comprises:
Multiplexing Unit is used for the data broadcast code stream is used in described playbill data cladding;
The OC unit is used for adopting the OC agreement of DSM-CC standard that described playbill data bag is broadcast to described set-top box.
10. digital TV front-end as claimed in claim 9 is characterized in that, the form of described programme file is the JSON form.
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| CN104967863A (en) * | 2015-07-29 | 2015-10-07 | 无锡天脉聚源传媒科技有限公司 | Method and device for modifying broadcast list |
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