CN104410895B - Realize the method and device of DVB data multimode distribution - Google Patents

Realize the method and device of DVB data multimode distribution Download PDF

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Publication number
CN104410895B
CN104410895B CN201410780619.9A CN201410780619A CN104410895B CN 104410895 B CN104410895 B CN 104410895B CN 201410780619 A CN201410780619 A CN 201410780619A CN 104410895 B CN104410895 B CN 104410895B
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data
dvb
module
functional module
sent
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CN104410895A (en
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孟新红
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Hisense Broadband Multimedia Technology Co Ltd
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Hisense Broadband Multimedia Technology Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/434—Disassembling of a multiplex stream, e.g. demultiplexing audio and video streams, extraction of additional data from a video stream; Remultiplexing of multiplex streams; Extraction or processing of SI; Disassembling of packetised elementary stream
    • H04N21/4345—Extraction or processing of SI, e.g. extracting service information from an MPEG stream
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/442—Monitoring of processes or resources, e.g. detecting the failure of a recording device, monitoring the downstream bandwidth, the number of times a movie has been viewed, the storage space available from the internal hard disk
    • H04N21/44213—Monitoring of end-user related data

Abstract

The invention discloses a kind of method and device for realizing the distribution of DVB data multimode, methods described includes：The request for the acquisition DVB data that receiving module is sent；The request of the acquisition DVB data is parsed, obtains the data type that the functional module is asked；Data decryptor that is corresponding with the functional module, including monitoring parameter is created, and the data type is sent to the parsing module of parsing data source；The monitoring parameter comprises at least the data type that the functional module is asked；The DVB data that the functional module that the parsing module received is sent is asked are sent to the functional module by the data decryptor.Using the method and device of the present invention, can solve multiple module request DVB data in the prior art and produce conflict and cause the delay of data acquisition speed, even obtain the technical problem of data failure.

Description

Realize the method and device of DVB data multimode distribution
Technical field
The invention belongs to communication technical field, is to be related to a kind of DVB data processing techniques specifically, more specifically, It is to be related to a kind of method and device for realizing the distribution of DVB data multimode.
Background technology
Moving Picture Experts Group-2 was made in passive movement motion picture expert group version in 1994, was divided into system layer, video compress layer and sound Frequency compression layer.Wherein, system layer is mainly used to describe the data-reusing of audio frequency and video and the method for synchronization of audio frequency and video.Determine in system layer The justice code stream of transport stream TS (Transport Stream) form.TS transport streams obtain widely in TV transmission field Using.
Complete the search, broadcasting, display electric program menu EPG of TV programme（Electronic Program Guide）, suppressible captions CC（Closed Caption）, teletext（TeleText）Deng business function, it is necessary to be passed from TS Section, packet elementary stream PES are analyzed in defeated stream（Packetized Elementary Stream）, elementary stream ES （Elementary Stream）Deng DVB data.Wherein, TS streams can be demodulated by tuner Tuner come can also It is the TS data files of network push or the TS ASCII stream file ASCIIs of recording.
In existing set top box or integrated machine equipment, it is to use each function mould that related DVB data are analyzed from TS code streams Block（Need to use the business function module of DVB data）The mode of operation of DVB data needed for independent process, acquisition.If using This mode of operation, identical bag mark PID is asked simultaneously in multiple modules（Packet Identifier）Data when, can only The request of data for having a module can meet with a response, and the request of data of other modules is then blocked, so as to cause other Module data obtains delay, results even in acquisition data failure.
The content of the invention
The mesh of the present invention is to provide a kind of method and device for realizing the distribution of DVB data multimode, to solve prior art In multiple module request DVB data produce conflict and cause the delay of data acquisition speed, the technology that even obtains data failure is asked Topic.
In order to solve the above technical problems, the method for DVB data multimode distribution provided by the invention uses following technical sides Case is realized：
A kind of method for realizing the distribution of DVB data multimode, methods described include：
The request for the acquisition DVB data that receiving module is sent；
The request of the acquisition DVB data is parsed, obtains the data type that the functional module is asked；
Data decryptor that is corresponding with the functional module, including monitoring parameter is created, and the data type is sent out Give the parsing module of parsing data source；The monitoring parameter comprises at least the data type that the functional module is asked；
The DVB data that the functional module that the parsing module received is sent is asked pass through the data decryptor It is sent to the functional module.
To solve aforementioned technical problem, the device of DVB data multimode distribution provided by the invention uses following technical sides Case is realized：
A kind of device for realizing the distribution of DVB data multimode, described device include：
DVB request of data receiving modules, the request of the acquisition DVB data sent for receiving module；
DVB request of data parsing modules, the acquisition DVB received for parsing the DVB request of data receiving module The request of data, obtain the data type that the functional module is asked；
Data decryptor create and data type sending module, for create it is corresponding with the functional module, include prison The data decryptor of parameter is listened, and the data type is sent to the parsing of DVB data and sending module；The monitoring parameter is at least The data type asked including the functional module；
DVB data parse and sending module, the institute sent according to data decryptor establishment and data type sending module Data type parsing data source is stated, DVB Data Concurrents is obtained and send；
DVB data distribution modules, the DVB data for DVB data parsing and sending module to be sent pass through data Monitoring is sent to the functional module.
Compared with prior art, the advantages and positive effects of the present invention are：
The present invention is after the request of acquisition DVB data of functional module transmission is received, by creating and functional module pair The data decryptor answered, data decryptor can be utilized to be interacted with parsing the parsing module of data source, by the data of the DVB data of request Type is sent to parsing module, and after the DVB data for receiving parsing module transmission, the DVB data received are sent respectively to Ask the functional module of DVB data.Using the solution of the present invention, each functional module is only needed when asking DVB data and data Interaction is monitored, and without the detailed process for being concerned about parsing data during data decryptor distribution data, it is only necessary to according to each function The request of module will receive DVB data distributions corresponding with each functional module to each functional module.Therefore, when multiple , can be by creating multiple data decryptors while responding multiple requests, thus functional module asks identical DVB data simultaneously when Avoid when multiple functional modules while when asking identical DVB data, parsing module can only respond a request of data and hinder Fill in the defects of information delay is obtained caused by other request of data or even obtains failure.Moreover, functional module will be asked Data type is sent to parsing module by data decryptor, and data are solved according to the data type asked by parsing module Analysis, if the data type of multiple functional modules request is identical, parsing module only needs parsing once corresponding data, then The data parsed are sent to data decryptor, each functional module is distributed to by data decryptor, saved to a certain extent System resource has been saved, has improved the operational efficiency of system.
After the embodiment of the present invention is read in conjunction with the figure, the other features and advantages of the invention will become more clear Chu.
Brief description of the drawings
Fig. 1 is the flow chart of method one embodiment that the present invention realizes the distribution of DVB data multimode；
Fig. 2 is the flow chart that the present invention realizes another embodiment of the method for DVB data multimode distribution；
Fig. 3 is the structured flowchart of device one embodiment that the present invention realizes the distribution of DVB data multimode.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, below with reference to drawings and examples, The present invention is described in further detail.
Fig. 1 is referred to, the figure show the flow that the present invention realizes method one embodiment of DVB data multimode distribution Figure.
As shown in figure 1, the embodiment realizes that the detailed process of DVB data multimode distribution comprises the steps：
Step 101：The request for the acquisition DVB data that receiving module is sent.
The functional module of DVB data is needed to use, such as program searching, program play, display electric program menu EPG, Corresponding function is realized, the request for obtaining DVB data can be sent.What the step was received is transmitted by these functional modules Acquisition DVB data request.
Functional module can send the request for obtaining DVB data by various modes, as described in by subsequent embodiment Call request function mode, or by way of interruption, etc..Moreover, in this embodiment, for being multiple functions Module asks the situation of DVB data simultaneously.
Step 102：Parsing obtains the request of DVB data, obtains asked data type.
Described data type herein, it is a parameter of the DVB data required for characterizing functional module.It is not only Including functional module what is desired is that TS data or PES data or section data, in addition to the parameter such as specific PID.Example Such as, if functional module request TS data or PES data, data type include the PID of data needed for sign；If module please Section data are sought, data type includes the PID of data needed for sign and characterizes filter condition of filtration types, etc..Work( Energy module has data type when asking DVB data in request of data；Or directly transmit and include data type One request.Thus, when receiving the request of acquisition DVB data of functional module transmission, first from the DVB data received Parsed in request and obtain asked data type, to be subsequently functional module feedback correctly required DVB data.
Step 103：Data decryptor corresponding with functional module is created, data type is sent to the parsing of parsing data source Module.
Create one correspond with functional module, include the data decryptor of monitoring parameter, and step 102 is parsed Data type be sent to parsing module.The one-to-one relationship of functional module and data decryptor, it can come in several ways Realize, for example, can be realized by way of the mark of subsequent embodiment, can also can realize corresponding relation by other Mode is realized.
Specifically, data decryptor, which is one, can monitor and whether fed back the data of demand, can receive required data And can be by the monitor of data distribution to functional module.The data decryptor can be realized by the form of the task in software. Monitoring parameter is used for representing that the data to be monitored of the data decryptor, namely response data monitor required feedback data, and Monitoring parameter comprises at least the data type that functional module corresponding to the monitoring is asked.And parsing module is to refer to parse number According to source, the module of acquisition DVB data, it can be DEMUX modules.Described data source herein, can be TS data flows.And And TS data flows can be the data flow or the data flow of Tuner push or the number of network push in TS ASCII stream file ASCIIs According to stream.Parsing module obtains data type, you can the DVB data corresponding to data type are parsed from data source.Specific solution Analysis process is prior art, is not specifically addressed herein.
Step 104, by the parsing module received send DVB data sent by data decryptor to corresponding function mould Block.
After parsing module parses DVB data according to data type, by the monitoring parameter according to data decryptor by DVB numbers According to the data decryptor for feeding back to required DVB data.Because data decryptor and functional module correspond, therefore, data decryptor is The DVB data received can be sent to the functional module for asking the DVB data.
The method for the DVB data multi-user distribution realized based on above-mentioned steps, is receiving the acquisition of functional module transmission After the request of DVB data, data decryptor corresponding with functional module is created, is interacted using data decryptor with parsing module, by Data decryptor is by the DVB data forwardings that parsing module parses to functional module.In whole process, each functional module is being asked Only interact, will not be interacted with parsing module with data decryptor when seeking DVB data, and data decryptor is mutually passed with parsing module Data, without being concerned about the detailed process of parsing module parsing data.Thus, when multiple functional modules ask identical simultaneously During DVB data, it can avoid when multiple functional modules while ask by creating multiple data decryptors while responding multiple requests When seeking identical DVB data, parsing module can only respond a request of data and block acquisition caused by other request of data Information delay even obtains the defects of failure.Moreover, the data type asked is sent to by functional module by data decryptor Parsing module, data are parsed according to the data type asked by parsing module, if the request of multiple functional modules Data type is identical, then parsing module only needs parsing once corresponding data, and the data parsed then are sent into data Monitor, each functional module is distributed to by data decryptor, system resource is saved to a certain extent, improves system Operational efficiency.
The parsing of DVB data need not be concerned about by being additionally, since functional module and data decryptor, hard used in parsing without considering Part resource, thus, the quantity of functional module will not be limited because of the limitation of hardware resource.Further, since module need not be thought of as Parsing hardware resource is distributed, the TS streams as data source are not only limited as the TS streams from hardware, are such as pushed from Tuner Data flow, TS streams can be possible to by depart from hardware platform, the data flow in such as TS ASCII stream file ASCIIs that have recorded, or Data flow of person's network push etc., solves the restricted problem of data source.
Referring to Fig. 2, the figure shows the flow that the present invention realizes another embodiment of the method for DVB data multimode distribution Figure.
As shown in Fig. 2 the embodiment realizes that the detailed process of DVB data multimode distribution comprises the steps：
Step 201：Functional module call request function, send the request for obtaining DVB data.
Request is sent by function call mode, can be that different functional modules set unified calling interface, be easy to Unified management to multiple functional modules.
Step 202：The request for the acquisition DVB data that receiving module is sent, divided using function is asked for functional module With mark.
While the request for the acquisition DVB data that receiving module is sent, divided using function is asked for functional module With unique one mark, for characterizing the functional module.The distribution of mark can take random manner, or other agreements Mode, as long as ensureing that each functional module has unique mark.
Step 203：Parsing obtains the request of DVB data, obtains requested data type.
The step refers to the description of Fig. 1 embodiment steps 102.
Step 204：The mark of functional module and the combination of data types of request for character string and are preserved.
Step 202 is asked to be data by the mark that functional module is distributed and the functional module that step 203 parses Type combination is a character string, and preserves the character string.
For example, it is assumed that multiple functional modules, such as the functional module such as program searching module, program updating module all please When seeking the data that PID is 0000, for the unique mark of each functional module distribution, uuid is designated as, and add data type Section, the then character string formed are：
1、PID=0000(0)
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ff 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 uuid=362e1925-f386-4f5d-bf5d-ad7bee1327de
Character string：362e1925-f386-4f5d-bf5d-ad7bee1327de-section
2、PID=0000(0)
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ff 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 uuid=76f5b6d1-6ca7-400c-b56d-d50c03b20d7d
Character string：76f5b6d1-6ca7-400c-b56d-d50c03b20d7d-section
3、PID=0000(0)
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ff 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 uuid=af8288db-c8e8-453f-9125-33af0862924d
Character string：af8288db-c8e8-453f-9125-33af0862924d-section
4、PID=0000(0)
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ff 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 uuid=be1a77e9-e750-444e-8c99-5eb0272853e0
Character string：be1a77e9-e750-444e-8c99-5eb0272853e0-section
5、PID=0000(0)
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
ff 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
uuid=d7d37d10-099e-476b-852d-23b2020a1e2a
Character string：d7d37d10-099e-476b-852d-23b2020a1e2a-section
Mark and data type, convenient use are characterized in the form of character string.Specifically, if same function The data type of module request changes, such as is not the data of section types, but PES or TS data, then, only Need the subsequent data type portions in character string, i.e., " section " replace with " PES " or " TS ", without changing again The mark of functional module, the efficiency of functional module differentiation is improved to a certain extent.
Step 205：Data decryptor corresponding with functional module is created, data type is sent to parsing module.
The step more specifically describes the record referring to Fig. 1 embodiment steps 103.
Step 206：The DVB data that parsing module is sent are received, obtain the data type of the DVB data.
After parsing module parses DVB data according to data type, by the monitoring parameter according to data decryptor by DVB numbers According to the data decryptor for feeding back to required DVB data.Moreover, the data of the DVB data can be included in the DVB data parsed Type, therefrom read out the data type.
Step 207：The data type identical data type of the DVB data with obtaining is searched from the character string of preservation Character string, the functional module indicated by mark that DVB data are sent to by data decryptor in the character string found.
In step 204, data decryptor saves the mark of functional module and its data type institute's group of request and formed Character string.When receiving the DVB data that parsing module is sent, can be searched from the character string of preservation has what is received The character string of the data type of DVB data.When finding identical data type, further according to the data type institute in character string Corresponding mark, DVB data are sent to the functional module indicated by the mark.Due to the mark of functional module be it is unique, Data type is carried in functional module request, thus, functional module will not get the data of mistake.
It is additionally, since parsing module and is only concerned about data type, same data type only makees one parsing, multiple when there are When asking the functional module with data type, the data type of DVB data that can be parsed according to parsing module finds multiple Character string with same data type, but because the mark of each character string is different, the DVB data can be sent to multiple simultaneously Different functional modules is identified, will not produce when difference in functionality module obtains same data type and obstruction be present.
Step 208：Functional module gets DVB data, calls cancellation request function, discharges the work(by cancellation request function The data decryptor of energy module.
After functional module obtains required DVB data, cancellation request function is called, so as to discharge the number corresponding to it According to monitoring, to filter out otiose data decryptor in time, system resource is saved.Moreover, released by function call mode Data decryptor is put, can be that different functional modules set unified calling interface, be easy to manage the unified of multiple functional modules Reason.
Fig. 3 is referred to, the structure of device one embodiment of DVB data multimode distribution is realized the figure shows the present invention Block diagram.
As shown in figure 3, the device of the embodiment is realized using the structure with following each modules：
DVB request of data receiving module 325, the request of the acquisition DVB data sent for receiving module 31.Its In, functional module 31 not only refers to One function module, is also used for representing multiple functional modules, refers in particular to multiple function moulds Block.
DVB request of data parsing module 326, for parsing the acquisition DVB numbers of the reception of DVB request of data receiving module 325 According to request, obtain the data type that functional module 31 is asked.
Data decryptor create and data type sending module 327, for create it is corresponding with functional module 31, include prison The data decryptor of parameter is listened, and data type is sent to the parsing of DVB data and sending module 33；Wherein, monitoring parameter is at least The data type asked including functional module 31.
DVB data parse and sending module 33, the number sent according to data decryptor establishment and data type sending module 327 Data source 34 is parsed according to type, DVB Data Concurrents is obtained and send.
DVB data distributions module 328, for the DVB data that DVB data are parsed and sending module 33 is sent to be passed through into data Monitoring is sent to functional module 31.
In addition, the device of the embodiment can also include：
Function call module 321 is asked, for supplying the call request function of functional module 31, and is obtained by asking function to send Take the request of DVB data.
Distribute module 322 is identified, for distributing unique mark for functional module 31.
Text string generation module 323, for mark and combination of data types to be turned into character string.
Memory module 324, for preserving mark and data type.Specifically, can be in the form of preserving character string Preserve mark and data type.
Cancellation request function call module 329, for calling cancellation request function for functional module 31, and by cancellation request Data decryptor corresponding to function release function module 31.
In addition, DVB data distributions module 328 can be realized using following each unit structures.DVB data distributions module 328 Including：
DVB data receivers and data type acquiring unit 3281, sent for receiving the parsing of DVB data and sending module 33 DVB data, and obtain the data type of received DVB data.
Character string identifying unit 3282, for searching mark and data class in the character string preserved in memory module 324 Type, and whether the data type that multilevel iudge is found is identical with the data type of acquisition.
DVB file distributing units 3283, for the data type and solution for judging to find in character string identifying unit 3282 The mark institute being sent to by data decryptor DVB data corresponding to data type when the data type of precipitation is identical in character string The functional module 31 of instruction.
Above-mentioned each module cooperative work, according to the process flow operation corresponding software of Fig. 1 and Fig. 2 embodiments of the method, realization is based on Distribution of the data decryptor module that data decryptor is created and data type sending module 327 is created to multimode DVB data.Respectively The more detailed operation principle of module, process and caused effect, referring to the detailed description of Fig. 1 and Fig. 2 embodiments.
The above embodiments are merely illustrative of the technical solutions of the present invention, rather than is limited；Although with reference to foregoing reality Example is applied the present invention is described in detail, for the person of ordinary skill of the art, still can be to foregoing implementation Technical scheme described in example is modified, or carries out equivalent substitution to which part technical characteristic；And these are changed or replaced Change, the essence of appropriate technical solution is departed from the spirit and scope of claimed technical solution of the invention.

Claims (10)

  1. A kind of 1. method for realizing the distribution of DVB data multimode, it is characterised in that methods described includes：
    The request for the acquisition DVB data that receiving module is sent；
    The request of the acquisition DVB data is parsed, obtains the data type that the functional module is asked；
    Data decryptor that is corresponding with the functional module, including monitoring parameter is created, and the data type is sent to Parse the parsing module of data source；The monitoring parameter comprises at least the data type that the functional module is asked；Data are supervised Listen be can monitor whether fed back the data of demand, can receive needed for data and can be by the prison of data distribution to functional module Device is listened, is realized by the form of the task in software；
    After the parsing module parses DVB data according to data type, it will be incited somebody to action according to the monitoring parameter of the data decryptor DVB data feedbacks to required DVB data data decryptor；
    The DVB data that the functional module that the parsing module received is sent is asked are sent by the data decryptor To the functional module.
  2. 2. according to the method for claim 1, it is characterised in that the functional module call request function, send described obtain Take the request of DVB data；
    Before the establishment data decryptor that is corresponding with the functional module, including monitoring parameter, in addition to：
    Obtain unique mark that the request function is functional module distribution；
    It is described to create data decryptor corresponding with the functional module, that include monitoring parameter and be specially：
    Creating includes the data decryptor for the data type that the mark and the functional module are asked, and preserves the mark And the data type.
  3. 3. according to the method for claim 2, it is characterised in that the establishment includes the mark and the functional module The data decryptor for the data type asked specifically includes：
    It is a character string by the mark and the combination of data types；
    The preservation mark and the data type are specially：
    Preserve the character string.
  4. 4. according to the method for claim 3, it is characterised in that described by described in the parsing module received transmission The DVB data of functional module request are sent to the functional module by the data decryptor and are specially：
    The DVB data that the parsing module is sent are received, and obtain the data type of received DVB data；
    The mark and data type in preserved character string are searched, and compares the data type found and the data class obtained Whether type is identical；
    If identical, DVB data corresponding to the data type are sent to indicated by the mark by the data decryptor Functional module.
  5. 5. method according to any one of claim 1 to 4, it is characterised in that the parsing mould that will be received DVB data that block is sent, corresponding with the functional module also include after being sent to the functional module：
    The functional module calls cancellation request function, the data as corresponding to the cancellation request function discharges the functional module Monitor.
  6. 6. a kind of device for realizing the distribution of DVB data multimode, it is characterised in that described device includes：
    DVB request of data receiving modules, the request of the acquisition DVB data sent for receiving module；
    DVB request of data parsing modules, the acquisition DVB data received for parsing the DVB request of data receiving module Request, obtain the data type that the functional module is asked；
    Data decryptor create and data type sending module, for create it is corresponding with the functional module, include monitoring join Several data decryptors, and the data type is sent to the parsing of DVB data and sending module；The monitoring parameter comprises at least The data type that the functional module is asked；Data decryptor is can to monitor whether fed back the data of demand, can receive institute The data of need simultaneously can be realized the monitor of data distribution to functional module by the form of the task in software；
    DVB data parse and sending module, the number sent according to data decryptor establishment and data type sending module Data source is parsed according to type, DVB Data Concurrents is obtained and send；
    DVB data distribution modules, the DVB data for DVB data parsing and sending module to be sent pass through data decryptor It is sent to the functional module.
  7. 7. device according to claim 6, it is characterised in that described device also includes：
    Function call module is asked, institute is sent for supplying the functional module call request function, and by the request function State the request for obtaining DVB data；
    Distribute module is identified, for distributing unique mark for the functional module；
    Memory module, for preserving the mark and the data type.
  8. 8. device according to claim 7, it is characterised in that described device also includes：
    Text string generation module, for the mark and the combination of data types to be turned into character string；
    The memory module preserves the mark and the data type in the form of preserving the character string.
  9. 9. device according to claim 8, it is characterised in that the DVB data distributions module includes：
    DVB data receivers and data type acquiring unit, for receiving the DVB of the parsing of DVB data and sending module transmission Data, and obtain the data type of received DVB data；
    Character string identifying unit, for searching mark and data type in the character string preserved in the memory module, and compare It is whether identical with the data type of acquisition compared with the data type for judging to find；
    DVB file distributing units, for judging the data type found and the data class parsed in character string identifying unit DVB data corresponding to the data type are sent to by data decryptor to the function mould indicated by the mark when type is identical Block.
  10. 10. the device according to any one of claim 6 to 9, it is characterised in that described device also includes：
    Cancellation request function call module, for calling cancellation request function for the functional module, and by the cancellation request Function discharges data decryptor corresponding to the functional module.
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