CN101867517A - Method for generating index and method and device for receiving and sending media file based on index - Google Patents
Method for generating index and method and device for receiving and sending media file based on index Download PDFInfo
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Abstract
The invention discloses a method for generating an index and a method and a device for receiving and sending a media file based on the index. A front end generates an application index and a network index according to description information of a content of the media file; a broadcasting server collects user subscribing information or user behavior information by a bilateral network from a terminal so as to regulate the application index, the network index and a content of the broadcasted media file; and the content of the broadcasted media file and the regulated network index and application index are packaged into a transmission data message and the transmission data message is sent to the terminal by an unilateral network. Compared with the prior art, the invention increases a feedback mechanism between front end equipment and terminal equipment, sufficiently utilizes the existing unilateral and bilateral coexistence transmission network and can make the front end carry out real-time regulation on the broadcasted media content file according to the requirement of a user.
Description
Technical field
The present invention relates to DVB (Digital Video Broadcasting, digital video broadcasting) technical field, relate in particular to a kind of method that generates index and based on the media file receiving/transmission method and the device of this index.
Background technology
FLUTE (File Deliver over Undirectional Transport, unidirectional file transfer) agreement be a kind of point based on the IP agreement to multiple spot file transfer protocol (FTP) (rfc3926), be widely used in the various transmission systems, as the IP data broadcasting among the DVB.The FLUTE agreement provides functions such as congested control, error correction for the one-way transmission of a plurality of files, guarantees the reliability of file one-way transmission.
In the FLUTE agreement, connection object TO conduct is unit transmission entity independently, and each connection object TO has a connection object sign TOI, and a plurality of connection objects are in a transmission session TS.As shown in Figure 1, the connection object of TOI=0 is used to transmit FDT (File Description Table, the transfer files description list), FDT is used for describing the connection object TO information that current transmission session TS is transmitted, connection object sign TOI, the URL (Universal Resource Locator, URL(uniform resource locator)) of file, file size, the file cryptographic Hash that comprise each connection object TO.
Existing DVB system as shown in Figure 2, the typical process of the IP data broadcasting among the DVB may further comprise the steps as shown in Figure 3:
Step S1: broadcast server and issue the ESG (ESG Electronic Service Guide, electron service instruction) that comprises digital media content files reception information to terminal.Terminal can obtain the relevant information of digital media content files by ESG, as Business Name, reproduction time, content outline, FLUTE protocol of I P address and port numbers etc.
Step S2: terminal inserts the FLUTE session according to IP address that receives file and port numbers, determines the required file that receives according to ESG.
Step S3: the digital media content files that broadcasting server provides server to provide content service generates the FDT table, and wheel is broadcast the connection object TO in the FDT table.
Step S4: terminal receives the connection object TO relevant information in FDT table and the parsing FDT table, determines to receive the TOI of digital media content files correspondence, receives respective transmissions object TO according to TOI then.
In unilateral network and bilateral network and the transmission network deposited, when carrying out the IP data broadcasting, the digital media content files that the remediation server request that terminal can also be by the bilateral network forward end is received after to the FLUTE end of transmission is repaired.
A kind of index of content being carried out feature extraction and sign guiding was proposed in this piece article in " research of digital media content index and mapping method and realization " (" TV tech " in August, 2009), its purpose is the disclosure feature, be convenient to concentrate similar content, distinguish different contents, for related content is set up contact.In the article index is divided into: transmit the semantic index of semantic index and file.In the semantic index of the transmission of IP transport layer, can be that the user preserves the selection of content, and the network equipment provide the data basis to the processing of content in the transmission course.The semantic index of file can provide the data basis for contents semantic information shows, the automatic classification of program and client show the classification of program.
Also propose a kind of IP data supplying system of content-based index in the article, as shown in Figure 4, form by content index generation and encoding software, content index mapping and content Broadcast Control software and set-top box client software three parts.Content index editor and generation software are sent the index and the content that generate into content index mapping and content Broadcast Control software, and content index mapping and content Broadcast Control software and client software adopt the broadcasting unidirectional mode to carry out content and index is transmitted.
But, in the prior art at front end when terminal is broadcast connection object TO or content and index, be to be transferred to terminal in the unidirectional mode of broadcasting, the content that the user can only passive receiving front-end issues can not be carried out personalized adjustment to the video file of watching.
Summary of the invention
The technical problem to be solved in the present invention is, a kind of method that generates index is provided and based on the media file receiving/transmission method and the device of this index, according to user's demand its media file of watching carried out personalization adjustment.
The technical solution used in the present invention is that the method for described generation index comprises:
The descriptor of contents of media files classified generate the index of content collection, content description index, relevance index and content strategy index;
The XML text code is carried out in above-mentioned four kinds of indexes respectively be created on the application index;
Part descriptor in the index of content collection, content description index and the content strategy index is carried out binary coding generate the network index.
The present invention also provides a kind of media file sending method based on index, comprises the steps:
Descriptor according to contents of media files generates application index and network index;
Broadcast server and collect user subscription information or user behavior information from terminal, and adjust in view of the above and use index, network index and this contents of media files of broadcasting by bilateral network;
This contents of media files of broadcasting, adjusted network index and application index are packaged into data message transmission send to terminal by unilateral network.
The present invention also provides a kind of media file method of reseptance based on index, comprises the steps:
Receive the IP packet by unilateral network, and it is resolved filtration;
The back broadcast is stored in the contents of media files and the application index that parse;
Send to front end according to user behavior generation user behavior information or user subscription information by bilateral network.
The present invention also provides a kind of media file dispensing device based on index, comprises following part:
Content providing server is used for providing contents of media files to broadcasting server;
Broadcast server, be used for generating application index and network index, and use index, network index and this contents of media files of broadcasting, send to terminal by unilateral network according to the content temperature information adjustment that interactive server is sent according to contents of media files;
Interactive server is used for user subscription information that terminal is sent by bilateral network or user behavior information translation and becomes content temperature information to send to broadcast server.
The present invention also provides a kind of media file receiving system based on index, comprises following part:
The unilateral network receiver module, the IP packet that is used for front end is sent is resolved filtration, and the contents of media files that parses is sent to the content storage management module, and the application index that parses is sent to the index memory management module;
The content storage management module, the contents of media files that is used for having stored sends to the interface playing module and plays;
The index memory management module is used for the application index related with contents of media files sent to the interface playing module;
The user behavior administration module is used for generating user behavior information according to user behavior, receives user subscription information, and user behavior information or user subscription information are sent to the bilateral network module;
The interface playing module is used for contents of media files and application index thereof are presented to the user;
The bilateral network module, the user behavior information or the user subscription information that are used for the user behavior administration module is sent send to front end by bilateral network.
Adopt technique scheme, the present invention has following advantage at least:
The method of generation index of the present invention reaches media file receiving/transmission method and the device based on this index, front end generates application index and network index according to the descriptor of contents of media files, broadcast server and collect user subscription information or user behavior information from terminal by bilateral network, and adjust in view of the above and use index, network index and this contents of media files of broadcasting, with this contents of media files of broadcasting, adjusted network index and application index are packaged into data message transmission and send to terminal by unilateral network, compared with prior art, the present invention has increased the feedback mechanism between headend equipment and the terminal equipment, and made full use of existing unidirectional and the two-way and transmission network deposited, can make front end the medium content file of broadcasting be carried out real-time adjustment according to user's demand.
Description of drawings
Fig. 1 is the connection object TO structural representation among transmission session TS in the FLUTE agreement;
Fig. 2 is that existing DVB system forms schematic diagram;
Fig. 3 is the typical flowchart of the IP data broadcasting in the existing DVB system;
Fig. 4 is that the IP data of a kind of content-based index of the prior art push system's composition system schematic diagram;
Fig. 5 is the data model schematic diagram of index of the present invention;
Fig. 6 is the method flow diagram of the described generation index of first embodiment of the invention;
Fig. 7 the present invention is used for the index structure of container schematic diagram of IP package application index;
Fig. 8 is that the described media file dispensing device based on index of second embodiment of the invention is formed schematic diagram;
Fig. 9 becomes the modular structure schematic diagram for second embodiment of the invention acceptance of the bid derivation;
Figure 10 is a task generation module structural representation in the second embodiment of the invention;
Figure 11 is a message sending module structural representation in the second embodiment of the invention;
Figure 12 is the transmission session structural representation of second embodiment of the invention based on the FLUTE agreement;
Figure 13 is the described media file sending method flow chart based on index of third embodiment of the invention;
Figure 14 is that the described media file receiving system based on index of fourth embodiment of the invention is formed schematic diagram;
Figure 15 is an one-way data receiver module structural representation in the fourth embodiment of the invention;
Figure 16 is a bilateral network modular structure schematic diagram in the fourth embodiment of the invention;
Figure 17 is the described media file method of reseptance flow chart based on index of fifth embodiment of the invention;
Figure 18 is the described media file method of reseptance flow chart based on index of sixth embodiment of the invention.
Embodiment
Reach technological means and the effect that predetermined purpose is taked for further setting forth the present invention, below in conjunction with accompanying drawing and preferred embodiment, the method of the described generation index that the present invention is proposed and based on the media file receiving/transmission method and the device of this index, describe in detail as after.
First embodiment of the invention, a kind of method that generates index as shown in Figure 6, comprises following concrete steps:
Step S101, the descriptor of contents of media files classified generate the index of content collection, content description index, relevance index and content strategy index, the data model of index as shown in Figure 5, the index of content collection can be with 0,1 ... or n content description index association, the content description index is related with a relevance index and a content strategy index respectively, relevance index and 1,2 ... or n contents of media files association.
The index of content collection: carry out the description that cluster is formed according to operation demand and support media style content, single content collection has unique content collection ID (Content Group ID).The content that the index of content collection comprises is as shown in table 1.
The index of table 1 content collection
| Field name | Purposes | Type |
| ??Content?Group?ID | The content set identifier | ??Int |
| Title | Content collection title | ??String |
| Content collection supplier | Content collection supplier | ??String |
| The content collection is described | The description of content collection | ??String |
| Content collection type | The inventory information of content collection | ??Int |
| The content collection collects the time | The content collection compile the age | ??Time |
| Whether free | Whether the content collection is free | ??Bool |
| Satellite information | Content collection Logo | ??URL |
Content description index: the abstracted information of describing contents of media files.Each contents of media files is carried out unique identification---content ID (Content ID), and the program with identical media file content intension has same content ID, and the content that the content description index comprises is as shown in table 2.
The index of table 2 content description
| Field name | Purposes | Type |
| Title | Content title | ??String |
| ??Content?Group?ID | The content set identifier | ??Int |
| Content ID | Content identification | ??Int |
| Content type | The cataloging classification of content | ??String |
| Field name | Purposes | Type |
| Language | Content track language message | ??String |
| Subtitle language | Content captions language message | ??String |
| Credits present | Featured performer information | ??String |
Relevance index: describe the contents of media files relevant information, comprise a master file and a plurality of less important file usually.The content that the relevance index comprises is as shown in table 3.
The index of table 3 relevance
| Field name | Purposes | Type | Quantity |
| Content ID | Content identification | ??Int | ??1 |
| Content master file quantity | The number of master file is described | ??Int | ??1 |
| Content master file URL | The position attribution of master file is described | ??URL | ??1..N |
| The less important quantity of documents of content | The number of master file is described | ??Int | ??1 |
| The less important file URL of content | The position attribution of master file is described | ??URL | ??0..N |
Content strategy index: the propelling movement mode of describing contents of media files.It is urgent, preferential and common that priority comprises, is used for identifying content in the once transmission precedence of broadcasting task.The content that the content strategy index comprises is as shown in table 4.
The index of table 4 content strategy
| Field name | Purposes | Type | Quantity |
| Content ID | Content identification | ??Int | ??1 |
| Content is broadcast the time started | Content is broadcast the estimated time of beginning | ??Time | ??1 |
| Content is broadcast the concluding time | Content is broadcast the estimated time of end | ??Time | ??1 |
| Wheel is broadcast number of times | Content is broadcast number of times at once wheel of broadcasting in the task | ??Int | ??1 |
| Priority | The sign content is in the once transmission precedence of broadcasting in the task | ??Int | ??1 |
Step S102 carries out the XML text code respectively with above-mentioned four kinds of indexes and is created on the application index, is used for encapsulating in application layer.
In front end and terminal, all can realize the persistent storage of index, memory model can be relational model, XML, file, binary stream etc." lastingly " this notion will loss of data be that representative " temporarily " notion is relative with shutting down with power supply.Can realize that as database and file etc., the realization approach is not done specific requirement by following approach, but should guarantee the convenient and good transactional of high-performance storage, mapping of index persistence.Index coding carries out information organization and expression according to the index data model among Fig. 5, is divided into two kinds according to the i.e. carrying form of level at place: use index and network index.Using index is the plaintext of non-compression,
In this step the XML text code is carried out in above-mentioned 4 class indexes, guarantee readability and interoperability, be used for encapsulating in application layer.
Step S103 carries out binary coding with the content collection supplier in the index of content collection, content type in the content description index and the information such as priority in the content strategy index and generates the network index.When encapsulation, embed IP Option field, because the length limited of IP Option field, so only keep most important above-mentioned three information of index.
DVB of the present invention system is made up of front end, transmission network and terminal.Front end comprises broadcasts server, content providing server and interactive server.Content providing server provides content, broadcasts server broadcasting content and index, and interactive server is collected user behavior information and user subscription information.The present invention can be applied to following two kinds of transmission networks:
First kind: unilateral network and bilateral network and dis environment, as: cable TV network and telecommunication access network/mobile Internet.As shown in Figure 8, broadcast server and insert unilateral network, carry out One-to-All Broadcast and broadcast, interactive server inserts bilateral network, carries out point-to-point two-way interactive.
Second kind: support the multicast bidirectional network environment, the cable TV network after finishing as bidirectional rebuilding, telecommunication access network/mobile Internet etc.Front end is broadcast server and insert to be supported the bilateral network of multicast to carry out unidirectional multicast to broadcast that the front end interactive server also inserts supports the bilateral network of multicast to carry out point-to-point two-way interactive, collects user behavior information and user subscription information.
Owing to support that the multicast bidirectional network environment is bigger to existing transmission network transformation, and cost is higher, the present invention is an example with unilateral network and bilateral network and dis environment mainly, describes technical scheme of the present invention.
Second embodiment of the invention, a kind of media file dispensing device based on index, i.e. the front end of DVB system as shown in Figure 8, comprises following part:
One, content providing server
Content providing server is used for providing contents of media files to broadcasting server.
Two, broadcast server
Broadcast server and form structure as shown in Figure 8, front end broadcast server to the unidirectional propelling movement contents of media files of terminal.Broadcast the workflow of server, at first obtain content from content providing server, by the content managing module management, the information that provides according to content generates index according to this requirement of broadcasting task at the index generation module afterwards.Adjust the content strategy index at the task generation module according to the user behavior information or the user subscription information of content index information and interactive server feedback, generate wheel and broadcast the FDT table or when initially powering on, generate preview FDT table.The message sending module receives the index information that the index generation module generates, receive the adjusted content strategy index that the task generation module is sent simultaneously, content and application layer index are packaged into data message transmission according to the FLUTE protocol requirement, and the embedded network index, send to terminal.
Introduce the composition structure and the working method of each module below in detail:
(1) index generation module
As shown in Figure 9, the index generation module comprises: molded tissue block and coding module, and the course of work of these two modules is as follows:
Molded tissue block, the raw information of collecting correlative indexing from content managing module is the descriptor of contents of media files, according to the method that generates index described in first embodiment, generate correlative indexing original information data structure as shown in Figure 5, comprise four class index raw informations: the index of content collection, content description index, relevance index and content strategy index.
Coding module is encoded to generate to correlative indexing original information data structure according to the difference of transmission location and is used index and network index.Concrete,
Four class index raw informations are carried out the XML coding, increase the index vessel head, generate complete index container.The index container can be considered media file, uses index with generating in the index container of packing into behind the four class indexes coding, is saved to this locality, encapsulates transmission according to the connection object mode when broadcasting.
Extract the content collection supplier information in the index of content collection, extract the content catalogue type in the content description index, extract the precedence information in the content strategy index, carry out binary coding, generate compact network index.Preferably, fields such as the version number of increase network index, length are convenient to the agreement upgrading of network index.Whole network indexes, use index and will send into the message sending module, to be packaged, embed and send.The task generation module is sent in the content strategy index of using in the index, broadcasts preceding adjustment.
(2) task generation module
As shown in figure 10, the task generation module comprises: content strategy index adjusting module and FDT table generate module, and the course of work of these two modules is as follows:
Content strategy index adjusting module, the content temperature information of same that is used for providing according to interactive server is broadcast number of times, priority to the transmission wheel of adjusting the content strategy index, adjusted content strategy index is added the index vessel head, and notice message sending module, upgrade content strategy index temporary in the message sending module.
FDT table generates module, when being used for initially powering in system, generating preview FDT table and sends to the message sending module, and preview FDT table comprises that the index of content collection, content description index and content strategy index use index for three kinds, and relevance index and content are not therein.The once task of broadcasting only provides preview FDT table one time.FDT table generates module and also is used for generating this wheel of broadcasting task according to adjusted content strategy index and broadcasts the FDT table and send to the message sending module.
(3) message sending module
As shown in figure 11, the message sending module receives following content:
1. the index generation module application index and the network index of importing into.
2. the contents of media files imported into of content managing module.
3. the wheel that imports into of the task generation module content strategy index broadcasting FDT table or preview FDT table, upgrade.
The message sending module comprises; Connection object locating module, FLUTE protocol groups bag module and IP data encapsulation module, the course of work of these three modules is as follows:
The connection object locating module is broadcast the connection object of description this transmission of location from contents of media files and application index of FDT table or preview FDT table according to wheel.
FLUTE protocol groups bag module is extracted data slice from connection object, according to the FLUTE agreement data slice is formed the FLUTE packet.Give an example, based on a transmission session of FLUTE agreement as shown in figure 12, the connection object of TOI=0 is used for transfer wheel and broadcasts the FDT table, the connection object of TOI=1 and TOI=2 is used for the transmission medium file, and the application index that will upgrade based on adjusted content strategy index is as the connection object of TOI=3 simultaneously.
IP data encapsulation module is carried out the assembling of IP packet in the index of IP Option field embedded network to the FLUTE packet, sends in the transmission network by network interface.Transmission network herein can be a unilateral network.
Need to prove that index is the description to content, be accompanied by the increase of amount of information, its length can be described as elongated, and it is inconvenient all being placed in the IP option.By the research to index, when IP encapsulated, we were divided into two part encapsulation with index according to function, network layer encapsulation and application layer encapsulation.The basic fixed position of network layer encapsulation represent content is for terminal provides coupling fast.The body location of application layer encapsulation represent content is for automatic classification and the cluster of terminal to content.Transparent in line with transmission, as not influence the legacy data transmission design feature of passing the analyzing IP packet in principle and transmission course, we select the package position of IP option (IPOption) as the network index.The IP load is as the package position of application layer index.So both solve IP option limited length, solved the local positioning describing problem of content again.
Use index and embed IP load field when encapsulation, such index can increase the index vessel head at front end according to the content preliminary treatment, generates complete index container, as shown in Figure 7.The index container only is used for the package application index, can be considered the data slice of media file, is saved to this locality after the generation, encapsulates transmission according to the connection object mode when broadcasting.
Each explanation of field among Fig. 7:
Version: describe the index container version;
Classification: describe the index classification, content collection index 01, content description index 02, content strategy index 03, relevance index 04;
Length: describing index length, is unit with byte;
ID: the circulation monotonic increase, index ID is unique.
The network index embeds IP Option field when IP encapsulates, because the length limited of IP Option field, so only keep most important three information of index: content collection supplier, content type and precedence information.
Three, interactive server
As shown in Figure 8, the interactive server of front end is connected by bilateral network with user terminal.
The interactive server workflow is, once broadcast the operation of task before, collect the possible demand of user by index information gathering module, can collect user feedback by bilateral network again after broadcasting task termination, adjust index information in view of the above.
Index information gathering module, under following five kinds of situations, finish the function of collecting or handling:
1. the user is broadcasting under the preview mode of task, and operating terminal generates user's subscription information, carries out aggregation process to the index information gathering module of interactive server.
2. after user's play content, terminal is collected user's behavioural information, according to information such as behavioural information statistics user broadcasting time, user satisfaction, send to by data protocol on the interactive server index information gathering module of front end, broadcast tactical arrangement for following subtask and prepare.
3. when not having the task of broadcasting, index information gathering module receiving terminal is initiatively reported user's subscribe message, and user's subscribe message comprises: the user wishes the content collection type that obtains, information such as content collection supplier and content type.
4. do not have the task of broadcasting markers fuse breath collection module cycle polling user behavior message, user behavior message comprises: the content collection type of user's accumulative total playlist TOP V, content collection supplier, information such as content type and content ID.
Index information gathering module with Information Statistics such as the content collection type in user behavior information or the user subscription information, content collection supplier, content types, gather the back and generate content temperature information, offer the task generation module of broadcasting server.
Third embodiment of the invention, a kind of media file sending method based on index as shown in figure 13, comprises following concrete steps:
Step S201 uses index and network index according to the descriptor generation of contents of media files;
Step S202 collects user subscription information or user behavior information from terminal, and adjusts content strategy index and this contents of media files of broadcasting in view of the above;
In this step, the process of collecting user subscription information from terminal is:
The server of broadcasting of front end sends preview FDT table by unilateral network to terminal, and preview FDT table comprises the index of content collection, content description index and three kinds of application of content strategy index index;
After user's preview finishes, by terminal user subscription information is sent to the interactive server of headend equipment via bilateral network, this user subscription information comprises that the user wishes TOP V content collection type, content type and the content collection supplier who sees.
In this step, from terminal collect user subscription information process can also for:
The user initiatively sends user subscribe message via bilateral network to interactive server by terminal, and described user's subscribe message comprises content ID that the user watches, to the evaluation of watching of contents of media files.
In this step, the process of collecting user behavior information from terminal is:
The server of broadcasting of front end is user behavior by interactive server to all terminal polling user situations of watching, and terminal generates user behavior information according to user behavior, gives interactive server by bilateral network feedback user behavior message;
Perhaps push user behavior information by bilateral network timing forward end interactive server by terminal equipment;
This user behavior message comprises user's accumulative total playlist TOP V content collection type, content type, content collection supplier and content ID.
Step S203 upgrades network index and the relevant information of using in the index according to adjusted content strategy index;
Step S204, network index after the contents of media files that will broadcast, the renewal and application index are packaged into data message transmission and send to terminal by unilateral network.
Fourth embodiment of the invention, a kind of media file receiving system based on index, i.e. the terminal equipment of DVB system as shown in figure 14, comprises following part:
One, module is broadcast at the interface
The interface is broadcast module and is used to provide User Interface and broadcasts device, and contents of media files and application index thereof are presented to the user.
Two, user behavior administration module
The user behavior administration module is used for the recording user behavior and generates user behavior information, comprises user's accumulative total playlist TOP V content type, content collection supplier and content ID etc.Receive user subscription information, comprise that the user wishes five content types, content collection supplier and the content ID etc. that obtain most.
Forward end provides user behavior information or user subscription information.
Set the index of generation local network according to the user, can send into the unilateral network receiver module and carry out the data packet matched reception of IP.
Three, content storage management module
The content storage management module provides the storage of content, and the contents of media files of having stored is sent to the interface playing module play, and the function that provides the user that the contents of media files of storing is conducted interviews, adds, upgrades, deletes.
Four, index memory management module
The index memory management module is used for the application index related with contents of media files sent to the interface playing module, and functions such as the parsing of user to index, visit, interpolation, renewal, deletion and storage are provided.
Five, unilateral network receiver module
The unilateral network receiver module receives the network index that the user behavior administration module is submitted to.
Receive IP packet and parsing from unilateral network, filtration is mated in the network index of local network index and reception packet, the IP packet that stays is carried out FLUTE unpack, become content and use index according to the FLUTE protocol analysis.
Submit contents of media files to content managing module, will use index and submit the index memory management module to.
Six, bilateral network module
Bilateral network module forward end interactive server report user behavior information or user subscription information, response interactive server user behavior polling request.
Fifth embodiment of the invention, a kind of media file method of reseptance based on index as shown in figure 17, comprises following concrete steps:
Step S301 receives the IP packet by unilateral network, and the IP packet is resolved to contents of media files, uses index and network index.
Step S302 makes the local network index according to user behavior, will fall with the packet filtering of the unmatched network index of local network index corresponding IP data.
Step S303 stores the back broadcast to the contents of media files and the application index that parse.
Step S304 generates user behavior information according to user behavior, and user behavior information is sent to front end by bilateral network.
Sixth embodiment of the invention, a kind of media file method of reseptance based on index as shown in figure 18, comprises following concrete steps:
Step S401 receives the IP packet by unilateral network, and the IP packet is parsed contents of media files, uses index and network index.
Step S402 makes the local network index according to user behavior, will fall with the packet filtering of the unmatched network index of local network index corresponding IP data.
Step S403 stores the back broadcast to the contents of media files and the application index that parse.
Step S404 sends to front end with user subscription information by bilateral network.
Compared with prior art, the present invention has increased the feedback mechanism between headend equipment and the terminal equipment, and made full use of existing unidirectional and the two-way and transmission network deposited, can make front end the medium content file of broadcasting be carried out real-time adjustment according to user's demand.
By the explanation of embodiment, should be to reach technological means and the effect that predetermined purpose takes to be able to more deeply and concrete understanding to the present invention, yet appended diagram only provide with reference to the usefulness of explanation, be not to be used for the present invention is limited.
Claims (14)
1. a method that generates index is characterized in that, comprising:
The descriptor of contents of media files classified generate the index of content collection, content description index, relevance index and content strategy index;
The XML text code is carried out in above-mentioned four kinds of indexes respectively be created on the application index;
Part descriptor in the index of content collection, content description index and the content strategy index is carried out binary coding generate the network index.
2. according to the method for the described generation index of claim 1, it is characterized in that the descriptor of the contents of media files that the index of described content collection comprises has:
Content set identifier, content collection title, content collection supplier, content collection type, content collection collect time, free and satellite information whether;
The descriptor of the contents of media files that described content description index comprises has:
Content set identifier, content identification, content title, content type, track language, subtitle language and credits present;
The descriptor of the contents of media files that described relevance index comprises has:
Content identification, content master file quantity, content master file URL, the less important quantity of documents of content and the less important file URL of content;
The descriptor of the contents of media files that described content strategy index comprises has:
Content identification, content are broadcast the time started, content is broadcast the concluding time, taken turns and broadcast number of times and priority.
3. according to the method for the described generation index of claim 1, it is characterized in that the descriptor of the contents of media files of described network index has: content collection supplier, content type and priority.
4. the media file sending method based on index is characterized in that, comprising:
Descriptor according to contents of media files generates application index and network index;
Broadcast server and collect user subscription information or user behavior information from terminal, and adjust in view of the above and use index, network index and this contents of media files of broadcasting by bilateral network;
This contents of media files of broadcasting, adjusted network index and application index are packaged into data message transmission send to terminal by unilateral network.
5. according to the described media file sending method of claim 4, it is characterized in that described user subscription information is based on index:
The user wishes the TOP V content collection type, content type and the content collection supplier that see, perhaps,
The content ID that the user watches, to the evaluation of watching of contents of media files;
Described user behavior information is:
Playlist TOP V content collection type, content type, content collection supplier and content ID.
6. the media file method of reseptance based on index is characterized in that, comprising:
Receive the IP packet by unilateral network, and it is resolved filtration;
The back broadcast is stored in the contents of media files and the application index that parse;
Send to front end according to user behavior generation user behavior information or user subscription information by bilateral network.
7. according to the described media file method of reseptance of claim 6, it is characterized in that the described process that the IP packet is resolved filtration comprises based on index:
The IP packet is resolved to contents of media files, uses index and network index;
Make the local network index according to user behavior, will fall with the packet filtering of the unmatched network index of local network index corresponding IP data.
8. the media file dispensing device based on index is characterized in that, comprising:
Content providing server is used for providing contents of media files to broadcasting server;
Broadcast server, be used for generating application index and network index, and use index, network index and this contents of media files of broadcasting, send to terminal by unilateral network according to the content temperature information adjustment that interactive server is sent according to contents of media files;
Interactive server is used for user subscription information that terminal is sent by bilateral network or user behavior information translation and becomes content temperature information to send to broadcast server.
9. the described according to Claim 8 media file dispensing device based on index is characterized in that, the described server of broadcasting further comprises:
Content managing module is used for extracting index raw information from the contents of media files that content providing server is sent, and contents of media files is sent to the message sending module;
The index generation module is used for generating application index and network index and sending to the message sending module based on index raw information, and the content strategy index that will use simultaneously in the index sends to the task generation module;
The task generation module is used to generate preview FDT table and wheel and broadcasts FDT, and the content temperature information of sending according to interactive server adjusts described content strategy index and wheel is broadcast the FDT table, and send to the message sending module;
The message sending module is used for and will sends to terminal after contents of media files, application index and the network index encapsulation.
10. according to the described media file dispensing device of claim 9, it is characterized in that described index generation module further comprises based on index:
Molded tissue block, the index raw information that is used for sending according to content managing module are formed index original information data structure and are sent to coding module;
Coding module is used for index or the network index of being applied of encoding of the part descriptor of each index of index original information data structure or index
11., it is characterized in that described task generation module further comprises according to the described media file dispensing device of claim 9 based on index:
Content strategy index adjusting module, the content temperature information that is used for sending according to interactive server are adjusted the content strategy index and are sent to FDT table generation module;
The FDT table generates module, is used for broadcasting the FDT table according to adjusted content strategy index generation wheel and sends to the message sending module, generates preview FDT table and send to the message sending module when described file dispensing device initially powers on.
12., it is characterized in that described message sending module further comprises according to the described media file dispensing device of claim 9 based on index:
The connection object locating module is used for broadcasting FDT table or preview FDT table positioning media file content according to the wheel that FDT table generation module is sent, and forms connection object and sends to FLUTE protocol groups bag module;
FLUTE protocol groups bag module is used for upgrading the application index that the index generation module is sent according to adjusted content strategy index, according to the FLUTE agreement connection object and described application index is packaged into the FLUTE packet again;
IP data encapsulation module is used for upgrading the network index that the index generation module is sent according to adjusted content strategy index, FLUTE packet and described network index is packaged into the IP packet sends to transmission network by network interface.
13. the media file receiving system based on index is characterized in that, comprising:
The unilateral network receiver module, the IP packet that is used for front end is sent is resolved filtration, and the contents of media files that parses is sent to the content storage management module, and the application index that parses is sent to the index memory management module;
The content storage management module, the contents of media files that is used for having stored sends to the interface playing module and plays;
The index memory management module is used for the application index related with contents of media files sent to the interface playing module;
The user behavior administration module is used for generating user behavior information according to user behavior, receives user subscription information, and user behavior information or user subscription information are sent to the bilateral network module;
The interface playing module is used for contents of media files and application index thereof are presented to the user;
The bilateral network module, the user behavior information or the user subscription information that are used for the user behavior administration module is sent send to front end by bilateral network.
14. according to the described media file receiving system of claim 13, it is characterized in that described user behavior administration module is further used for, set according to the user and make the local network index be used to mate and send to the unilateral network receiver module based on index;
Described unilateral network receiver module is further used for, and will fall with the packet filtering of the unmatched network index of local network index corresponding IP data.
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