CN102833586B - The method of application, terminal and system is processed in Digital Television - Google Patents
The method of application, terminal and system is processed in Digital Television Download PDFInfo
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Abstract
The embodiment of the invention discloses the method, receiving terminal for digital television and the digital television system that process application in a kind of Digital Television.Wherein, the method processing application in Digital Television can comprise: during the channel switch of Digital Television, from the TS stream that front-end server issues, obtain the pmt table corresponding with the channel after switching; Skew descriptor according to presetting carries out migration processing to described pmt table, obtains AMT table; Resolve AMT table, obtain the application descriptor of the application be associated with the channel after described switching; According to described application descriptor, from TS stream, parse the data of the application be associated with the channel after described switching.The present invention can make Digital Television realize the business of channel association application, avoid again processing brought impact to pmt table, make Digital Television on the basis of not influential system stable operation, realize the business of channel association application, promote the interactivity of Digital Television.
Description
Technical field
The present invention relates to TV technology, be specifically related to digital television techniques field, particularly relate in Digital Television the method, terminal and the system that process application.
Background technology
Channel association application is a kind of interactive service of Digital Television, certain channel can associate with application by operator in advance, user is when watching the program of this channel, automatically the application of this channel association is started, or prompting user clicks the application starting this channel association, such as: application of sports channel and victory or defeat being voted in advance is associated, when user watches program in sports channel (such as: the football match of France and Brazil), then automatically starts the victory or defeat ballot be associated and apply and supply user to guess ballot; Or prompting user starts by the respective keys of remote controller the victory or defeat ballot application be associated and carries out guess ballot.
Standard is realized according to channel association applied business, front-end server needs to make PMT(ProgramMapTable, Program Map Table) table in comprise the application descriptor be associated with channel, make this correlation tag value described by application descriptor and the AIT(ApplicationInformationTable described by pmt table, application information table simultaneously) table in correlation tag value identical.But, existing based in the digital television system of unilateral network, pmt table with program source signal receive by front-end server, first, for the purpose of safety, generally cannot modify to pmt table, also just cannot realize channel association application business; Secondly, front-end server when carrying out multiplexing process to program source signal, can be reconstructed pmt table, realized the business of channel association application, but restructuring procedure can cause the broadcasting empty window phase, affects the broadcasting of TV programme by reconstruct pmt table.
Summary of the invention
The embodiment of the present invention provides the method, terminal and the system that process application in a kind of Digital Television, on the basis not affecting existing digital television system stable operation, can realize the business of channels in digital TV set associated application, promotes the interactivity of Digital Television.
On the one hand, embodiments provide a kind of method processing application in Digital Television, comprising:
During the channel switch of Digital Television, from the TS(TransportStream that front-end server issues, transport stream) obtain the pmt table corresponding with the channel after switching in stream;
Skew descriptor according to presetting carries out migration processing to described pmt table, obtains AMT(ApplicationMapTable, application mapping table) table;
Resolve AMT table, obtain the application descriptor of the application be associated with the channel after described switching;
According to described application descriptor, from TS stream, parse the data of the application be associated with the channel after described switching.
Wherein, the skew descriptor that described basis is preset carries out migration processing to described pmt table, obtains AMT table, comprising:
From the NIT(NetworkInformationTable that front-end server issues, network information table) read default skew descriptor in table, or, from the file that local terminal memory or local terminal store, read default skew descriptor;
According to described default skew descriptor, to the PID(PacketIDdentifier of described pmt table, identity code transmission package) carry out migration processing, obtain the PID of AMT table;
According to the PID that described AMT shows, from TS stream, obtain AMT table;
Wherein, described default skew descriptor comprises: deviant descriptor and migration processing mode descriptor.
Wherein, described parsing AMT shows, and obtains the application descriptor of the application be associated with the channel after described switching, comprising:
The PID of application information table AIT table is read from AMT table;
According to the PID of AIT table, from TS stream, obtain AIT table;
The correlation tag value corresponding with the application that the channel after described switching is associated is resolved from AIT table;
The application descriptor matched with described correlation tag value is searched from AMT table;
Wherein, in described AIT table, described the application of channel association by association identification descriptor, and AIT shows application and the correlation tag value one_to_one corresponding of mid band association;
Described application descriptor comprises: any one or more in carousel identifier descriptor, stream identifier descriptor, correlation tag descriptor and data broadcast descriptor.
Wherein, described according to described application descriptor, from TS stream, parse the application data be associated with the channel after described switching, comprising:
Judge whether described application descriptor comprises carousel identifier descriptor simultaneously, stream identifier descriptor, correlation tag descriptor and data broadcast descriptor;
If so, from AMT table, then obtain the PID of the data of application be associated with the channel after described switching according to correlation tag value, and according to described PID, parse from TS flows with described switching after the data of application of channel association.
Wherein, described from TS stream parse the application data be associated with the channel after described switching after, also comprise:
Show the data of the application be associated with the channel after described switching; Or,
Exporting Application Hints information, when receiving the triggering signal returned based on described Application Hints information, showing the data of the application be associated with the channel after described switching.
Correspondingly, the embodiment of the present invention additionally provides a kind of receiving terminal for digital television, comprising:
Pmt table acquisition module, for when the channel switch of Digital Television, obtains the pmt table corresponding with the channel after switching from the TS stream that front-end server issues;
AMT shows acquisition module, for carrying out migration processing according to the skew descriptor preset to described pmt table, obtains AMT table;
Parsing module, for resolving AMT table, obtains the application descriptor of the application be associated with the channel after described switching;
Data processing module, for according to described application descriptor, parses the data of the application be associated with the channel after described switching from TS stream.
Wherein, described AMT table acquisition module comprises:
Reading unit, reads default skew descriptor during the NIT for issuing from front-end server shows, or, from the file that local terminal memory or local terminal store, read default skew descriptor;
Migration processing unit, for according to described default skew descriptor, carries out migration processing to the PID of described pmt table, obtains the PID of AMT table;
AMT shows acquiring unit, for the PID shown according to described AMT, obtains AMT table from TS stream;
Wherein, described default skew descriptor comprises: deviant descriptor and migration processing mode descriptor.
Wherein, described parsing module comprises:
Reading unit, for obtaining the PID of AIT table from AMT table;
Acquiring unit, for the PID shown according to AIT, obtains AIT table from TS stream;
Resolution unit, for parsing the correlation tag value corresponding with the application that the channel after described switching is associated from AIT table;
Search unit, for searching the application descriptor matched with described correlation tag value from AMT table;
Wherein, in described AIT table, described the application of channel association by association identification descriptor, and AIT shows application and the correlation tag value one_to_one corresponding of mid band association;
Described application descriptor comprises: any one or more in carousel identifier descriptor, stream identifier descriptor, correlation tag descriptor and data broadcast descriptor.
Wherein, described data processing module comprises:
Judging unit, for judging whether described application descriptor comprises carousel identifier descriptor, stream identifier descriptor, correlation tag descriptor and data broadcast descriptor simultaneously;
Processing unit, for when described judging unit is judged as YES, from AMT table, obtain the PID of the data of the application be associated with the channel after described switching according to described correlation tag value, and according to described PID, from TS stream, parse the data of the application be associated with the channel after described switching.
Wherein, also comprise:
Display module, for showing the data of the application be associated with the channel after described switching;
Output module, for exporting Application Hints information, and when receiving the triggering signal returned based on described Application Hints information, notifies that described display module shows the data of the application be associated with the channel after described switching.
Correspondingly, the embodiment of the present invention additionally provides a kind of digital television system, comprises front-end server and receiving terminal for digital television, and wherein, described front-end server comprises:
AIT shows creating unit, for the identifier according to each channel with show with the application data stream information creating AIT of this channel association;
AMT shows creating unit, show for the identifier according to each channel, AIT table, application data stream information creating AMT, the structure of described AMT table is identical with pmt table, and the PID of AMT table carries out migration processing by the PID of pmt table according to the skew descriptor preset and obtains;
Multiplexingly broadcast unit, AIT is shown, frequency that application data stream and AMT show to be multiplexed into each channel corresponding broadcasts;
Described receiving terminal for digital television is above-mentioned receiving terminal for digital television.
Implement the embodiment of the present invention, there is following beneficial effect:
The embodiment of the present invention carries out the description of the relevant information of channel association application based on AMT table, Digital Television can be made to realize the business of channel association application, turn avoid and brought impact is processed on pmt table, make Digital Television on the basis of not influential system stable operation, achieve the business of channel association application, improve the interactivity of Digital Television.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
The flow chart of the method for application is processed in a kind of Digital Television that Fig. 1 provides for the embodiment of the present invention;
The flow chart of the embodiment that Fig. 2 is step S102 shown in Fig. 1;
The flow chart of the embodiment that Fig. 3 is step S103 shown in Fig. 1;
The flow chart of the embodiment that Fig. 4 is step S104 shown in Fig. 1;
The flow chart of the method for application is processed in the another kind of Digital Television that Fig. 5 provides for the embodiment of the present invention;
The flow chart of the method for application is processed in another Digital Television that Fig. 6 provides for the embodiment of the present invention;
The structural representation of a kind of receiving terminal for digital television that Fig. 7 provides for the embodiment of the present invention;
Fig. 8 shows the structural representation of an embodiment of acquisition module 102 for AMT shown in Fig. 7;
The structural representation of the embodiment that Fig. 9 is parsing module 103 shown in Fig. 7;
The structural representation of the embodiment that Figure 10 is data processing module 104 shown in Fig. 7;
The structural representation of the another kind of receiving terminal for digital television that Figure 11 provides for the embodiment of the present invention;
The structural representation of a kind of digital television system that Figure 12 provides for the embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
In the embodiment of the present invention, receiving terminal for digital television can be Set Top Box (SetTopBox, STB), digital TV integrated machine and the other-end equipment with Digital TV Receiving ability.After front-end server carries out a series of process to program source signal, for receiving terminal for digital television provides digital television service.Wherein, program source signal can comprise: satellite-signal, local coder programme signal, SDH(SynchronousDigitalHierarchy, SDH (Synchronous Digital Hierarchy)) signal such as signal transmission; Front-end server can comprise the process of program source signal: matrix scheduling, multiplexing, scrambling, PSI(ProgramSpecificInformation, Program Specific Information) insert, PID(PacketIDdentifier, identity code transmission package) process such as to remap.Corresponding to the process of front-end server to program source signal, after receiving terminal for digital television carries out reverse process to the TS stream that front-end server issues, for user provides digital television service.
Below in conjunction with Fig. 1-Fig. 6, the method being processed to application in the Digital Television that the embodiment of the present invention is provided describes in detail.
Refer to Fig. 1, for processing the flow chart of the method for application in a kind of Digital Television that the embodiment of the present invention provides; The method can comprise the following steps S101-step S104.
S101, during the channel switch of Digital Television, obtains the pmt table corresponding with the channel after switching from the transport stream TS stream that front-end server issues.
In digital television system, a corresponding PMTPID of channel, an i.e. corresponding pmt table, defines the audio stream descriptor of this channel, video flowing descriptor and AIT and shows descriptor in this pmt table, comprise the information such as the PID of the audio stream PID of this channel, video flowing PID and AIT table.Wherein, AIT table is a kind of section table describing apply property, the Starting mode comprise the title of application, whether application is associated with channel, applied is the type manually booting or automatically start, apply is HTML(HypertextMarkupLanguage, Hyper text transfer language) application or JAVA application, application entry file, the correlation tag value corresponding with the application that channel is associated, association identification descriptor of the application be associated with channel etc.Digital Television, when carrying out channel switch, obtains the pmt table corresponding with the channel after switching from the TS stream that front-end server issues.
S102, the skew descriptor according to presetting carries out migration processing to described pmt table, obtains AMT table.
In order to realize the business of channel association application, avoid impact pmt table being processed to the system instability brought, a kind of AMT table of embodiment of the present invention Additional definitions realizes the business of channel association application simultaneously.The AMT table defined in the embodiment of the present invention is identical with pmt table structure, but the data of the two carrying are different, as aforementioned, pmt table mainly carries audio/video flow and the AIT table descriptor of channel, and AMT table mainly carries the associated description information of the application be associated with channel, comprise AIT and show descriptor and DSMCC(DigitalStorageMediaCommandandControl, Digital Storage Media Command and control Extended Protocol) descriptor that flows.Wherein, AIT shows descriptor and the AIT defined in pmt table to show descriptor identical.DSMCC stream a kind ofly carries application data, based on the primary flow after DSMCC protocol encapsulation; The descriptor of DSMCC stream describes the incidence relation of application and channel in DSMCC stream, and the descriptor that the PID of the data of the application to be associated with channel, this DSMCC flow comprises: any one or more in carousel identifier descriptor (Carousel_Identifier_Descriptor), stream identifier descriptor (Stream_Identifier_Descriptor), correlation tag descriptor (Association_Tag_Descriptor) and data broadcast descriptor (Data_Broadcast_Descriptor).As can be seen here, in the present invention, a pmt table is shown corresponding with an AMT, a corresponding AMT table of channel.
In order to set up the contact between pmt table and AMT table, the PID that can pre-define AMT table is that the PID of the pmt table that same channel is corresponding adds a deviant, the mode of this migration processing can be described by skew descriptor, by carrying out migration processing to pmt table, then can obtain corresponding AMT table.The TableID of AMT table can carry out unified planning and distribution by front end according to Carrier Requirements, and other information built required for AMT table can reference number television standard and filling the prior agreement of pmt table.Carrying out data penetration transmission during the TS that front-end server is shown carrying with the AMT of the application descriptor of channel association, AIT shows, DSMCC stream is multiplexed into the frequency at corresponding channel place flows, being then issued to receiving terminal for digital television.
S103, resolves AMT table, obtains the application descriptor of the application be associated with the channel after described switching.
As aforementioned, in AMT table, define the descriptor that AIT shows descriptor and DSMCC stream.Wherein, AIT table is a kind of section table describing apply property, the Starting mode comprise the title of application, whether application is associated with channel, applied is the type manually booting or automatically start, apply is entry file, the correlation tag value corresponding with the application that channel is associated that HTML application or JAVA apply, apply, association identification descriptor of the application be associated with channel etc.The descriptor of DSMCC stream describes the incidence relation of application and channel in DSMCC stream and the PID of the data of the application be associated with channel.The descriptor of DSMCC stream comprises: any one or more in carousel identifier descriptor, stream identifier descriptor, correlation tag descriptor and data broadcast descriptor.In this step, resolve AMT table and then can know the application whether existing and be associated with the channel after switching, and the application descriptor of this application can be obtained.
S104, according to described application descriptor, parses the data of the application be associated with the channel after described switching from TS stream.According to the application descriptor of the application be associated with the channel after switching of above-mentioned acquisition, the data of application described by this application descriptor, that be associated with the channel after described switching can be parsed from TS stream.
Describe in detail to each step in embodiment illustrated in fig. 1 below.
Referring to Fig. 2, is the flow chart of an embodiment of step S102 shown in Fig. 1; This step S102 can comprise the following steps:
S1201, reads default skew descriptor from the NIT table that front-end server issues, or, from the file that local terminal memory or local terminal store, read default skew descriptor.
Wherein, the skew descriptor preset describe pmt table and AMT show between relation.In specific implementation, described default skew descriptor can be added in advance in NIT table, also when searching programs, described default skew descriptor can be stored in memory (such as: flash storage) in receiving terminal for digital television or certain file.This step can be passed through to resolve NIT table, or, from the memory of this locality or the file of storage, read the skew descriptor that this is preset.
S1202, according to described default skew descriptor, carries out migration processing to the identity code transmission package PID of described pmt table, obtains the PID of AMT table.
Wherein, described default skew descriptor can comprise: deviant descriptor and migration processing mode descriptor.Deviant descriptor describes the concrete numerical value carrying out offseting, such as: 5,10 etc., migration processing mode descriptor describes how to carry out migration processing, such as: on the PID basis of pmt table, add deviant, or deviant is deducted on the PID basis of pmt table, etc.After migration processing being carried out to the PID of pmt table according to described default skew descriptor, then can obtain the PID of AMT table.
S1203, according to the PID that described AMT shows, obtains AMT table from TS stream.
Referring to Fig. 3, is the flow chart of an embodiment of step S102 shown in Fig. 1; Step S103 can comprise the following steps:
S1301, reads the PID of application information table AIT table from AMT table.
Description as shown in Figure 1 in embodiment is known, defines AIT and shows descriptor, comprise the PID of AIT table in AMT table.In this step, then can read the PID of AIT table from AMT table.
S1302, according to the PID of AIT table, obtains AIT table from TS stream.
S1303, resolves the correlation tag value corresponding with the application that the channel after described switching is associated from AIT table.
AIT table is a kind of section table describing apply property, the Starting mode comprise the title of application, whether application is associated with channel, applied is the type manually booting or automatically start, apply is entry file, the correlation tag value corresponding with the application that channel is associated that HTML application or JAVA apply, apply, association identification descriptor of the application be associated with channel etc.Usually, an AIT shows the application of regulation one type, comprises one or more application, the corresponding correlation tag value of each application.In practical application, a channel may correspond to multiple AIT and shows, but usually only binds with an application, realizes by arranging the descriptor whether carrying out binding with channel in AIT table.In this step, described AIT table is resolved, then from AIT table to the description of apply property, the correlation tag value corresponding to application be associated with the channel after switching can be obtained.
S1304, searches the application descriptor matched with described correlation tag value from AMT table.
As aforementioned, in AMT table, comprise the descriptor of DSMCC stream, which depict the incidence relation of application and channel in DSMCC stream, and the PID of the data of the application be associated with channel.The descriptor of DSMCC stream can comprise: any one or more in carousel identifier descriptor, stream identifier descriptor, correlation tag descriptor and data broadcast descriptor.The application descriptor of corresponding with correlation tag value application is searched at AMT table, i.e. DSMCC stream description information according to described correlation tag value.Wherein, the relating value corresponding with the application that channel is associated all is described in stream identifier descriptor and correlation tag descriptor, realize the business of channel association application, that describe in DSMCC stream description information should show with AIT with channel is associated association value in the correlation tag value of the same application be associated with channel that describes identical.In this step, then the correlation tag value that can obtain from AIT table according to step s1303, searches the DSMCC stream description information identical with this correlation tag value from AMT table.
Referring to Fig. 4, is the flow chart of an embodiment of step S104 shown in Fig. 1; This step S104 can comprise the following steps:
S1401, judges whether described application application descriptor comprises carousel identifier descriptor simultaneously, stream identifier descriptor, correlation tag descriptor and data broadcast descriptor.If judged result is yes, proceed to s1402; Otherwise, terminate.
During concrete judgement, if described application descriptor (descriptor of DSMCC stream) comprises carousel identifier descriptor simultaneously, stream identifier descriptor, correlation tag descriptor and data broadcast descriptor, then can confirm to there is the application data be associated with the channel after described switching in TS stream.Wherein, according to the technical standard of Digital Television, the value of described carousel identifier descriptor should be standard value 0x13, and the value of described data broadcast descriptor should be standard value 0x14.
S1402, obtains the PID of the data of the application be associated with the channel after described switching from AMT table according to described correlation tag value.
The application descriptor of corresponding with correlation tag value application is searched at AMT table, i.e. DSMCC stream description information according to described correlation tag value.The descriptor of DSMCC stream describes the incidence relation of application and channel and the PID of the data of the application be associated with channel.Resolve the descriptor that described DSMCC flows, then can obtain the PID of the data of the application be associated with channel.
S1403, according to described PID, parse from TS stream with described switching after the data of application of channel association.
According to the PID of data of the application obtained, can parse from TS stream with switch after the data of application that are associated of channel.It should be noted that, the form of expression due to the application data in TS stream is DSMCC stream, and the application data of the acquisition namely in TS stream is the primary flow after DSMCC protocol encapsulation.In this step, obtain DSMCC stream from TS stream after, can resolve this DSMCC stream based on DSMCC agreement, thus reducible obtain with switch after the data of application that are associated of channel.
The embodiment of the present invention carries out the description of the relevant information of channel association application based on AMT table, Digital Television can be made to realize the business of channel association application, turn avoid and brought impact is processed on pmt table, make Digital Television on the basis of not influential system stable operation, achieve the business of channel association application, improve the interactivity of Digital Television.
Refer to Fig. 5, for processing the flow chart of the method for application in the another kind of Digital Television that the embodiment of the present invention provides; The method can comprise the following steps:
S201, during the channel switch of Digital Television, obtains the pmt table corresponding with the channel after switching from the transport stream TS stream that front-end server issues.
S202, the skew descriptor according to presetting carries out migration processing to described pmt table, obtains application mapping table AMT table.
S203, resolves AMT table, obtains the application descriptor of the application be associated with the channel after described switching.
S204, according to described application descriptor, parses the data of the application be associated with the channel after described switching from TS stream.
Step S201-step S204 in the present embodiment, step S101-step S104 that can be shown in Figure 1, does not repeat them here.
S205, shows the data of the application be associated with the channel after described switching.
After the data obtaining the application be associated with the channel after switching, automatically can start the application be associated with the channel after described switching, show the data of this application.
The embodiment of the present invention carries out the description of the relevant information of channel association application based on AMT table, Digital Television can be made to realize the business of channel association application, turn avoid and brought impact is processed on pmt table, make Digital Television on the basis of not influential system stable operation, achieve the business of channel association application, the simultaneously application that is associated with channel of automatically starting, improves the interactivity of Digital Television.
Refer to Fig. 6, for processing the flow chart of the method for application in another Digital Television that the embodiment of the present invention provides; The method can comprise the following steps:
S301, during the channel switch of Digital Television, obtains the pmt table corresponding with the channel after switching from the transport stream TS stream that front-end server issues.
S302, the skew descriptor according to presetting carries out migration processing to described pmt table, obtains application mapping table AMT table.
S303, resolves AMT table, obtains the application descriptor of the application be associated with the channel after described switching.
S304, according to described application descriptor, parses the data of the application be associated with the channel after described switching from TS stream.
Step S301-step S304 in the present embodiment, step S101-step S104 that can be shown in Figure 1, does not repeat them here.
S305, exports Application Hints information.
In this step, information can be exported in the display frame of channel after handover, the application that this channel of prompting user is corresponding and link.Such as: the upper right corner of channel after described switching can export an Application Hints information, this information instruction current channel exists the application be associated, and indicates the link of this application.
S306, when receiving the triggering signal returned based on described Application Hints information, shows described application data.
Wherein, the signal that triggering signal can send according to the button that Application Hints information is pressed in remote controller for user, after receiving this triggering signal, then can start according to the link of application the application be associated with the channel after described switching, show the data of described application.
It should be noted that, the present embodiment and difference embodiment illustrated in fig. 5 are: the Starting mode to the application associated by channel embodiment illustrated in fig. 5 is for automatically to start, the Starting mode of the present embodiment to application is manually booting of user, in practical application, can determine for the description of the attribute of application according in AIT table the Starting mode of the application that channel is associated.
The embodiment of the present invention carries out the description of the relevant information of channel association application based on AMT table, Digital Television can be made to realize the business of channel association application, turn avoid and brought impact is processed on pmt table, make Digital Television on the basis of not influential system stable operation, achieve the business of channel association application, user can be pointed out to manually boot the application be associated with channel simultaneously, improve the interactivity of Digital Television.
With an instantiation, the method processing application in Digital Television provided by the invention is described below.
Suppose that CCTV5 is playing the TV programme of football match, operator wants the Java application of an association victory or defeat guess, then the PID of the pmt table of predeterminable CCTV5 is 1200, the PID of AMT table is 1205(deviant is 5, migration processing mode is add deviant on the PID basis of PMT), and in NIT table, add descriptor to describe this default skew descriptor.
When switching to CCTV5, AMT shows by front-end server, AIT table, DSMCC flow the multiplexing frequency to CCTV5 place and carry out data penetration transmission, is flowed down by TS and sends to receiving terminal for digital television.After receiving terminal for digital television performs the method for the process application that above-described embodiment describes, directly can show this application data for user's guess, also can in the channel display application information of CCTV5, triggering signal is sent by clicking remote controller by user, trigger and start victory or defeat guess application, and display application data are for user's guess.
The embodiment of the present invention carries out the description of the relevant information of channel association application based on AMT table, Digital Television can be made to realize the business of channel association application, turn avoid and brought impact is processed on pmt table, make Digital Television on the basis of not influential system stable operation, achieve the business of channel association application, improve the interactivity of Digital Television.
Corresponding to the embodiment of method processing application in above-mentioned Digital Television, below in conjunction with Fig. 7-Figure 11, the receiving terminal for digital television that the embodiment of the present invention provides is described in detail, it should be noted that, following receiving terminal for digital television can be applied in the method described in above-mentioned any embodiment.
Referring to Fig. 7, is the structural representation of a kind of receiving terminal for digital television that the embodiment of the present invention provides; This receiving terminal for digital television can comprise: pmt table acquisition module 101, AMT show acquisition module 102, parsing module 103 and data processing module 104.
Pmt table acquisition module 101, for when the channel switch of Digital Television, obtains the pmt table corresponding with the channel after switching from the TS stream that front-end server issues.
AMT shows acquisition module 102, for carrying out migration processing according to the skew descriptor preset to described pmt table, obtains AMT table.
Parsing module 103, for resolving AMT table, obtains the application descriptor of the application be associated with the channel after described switching.
Data processing module 104, for according to described application descriptor, parses the data of the application be associated with the channel after described switching from TS stream.
Describe in detail to each module in embodiment illustrated in fig. 7 below.
Refer to Fig. 8, show the structural representation of an embodiment of acquisition module 102 for AMT shown in Fig. 7; This migration processing module 102 can comprise: reading unit 1201, migration processing unit 1202 and AMT show acquiring unit 1203.
Reading unit 1201, reads default skew descriptor during the NIT for issuing from front-end server shows, or, from the file that local terminal memory or local terminal store, read default skew descriptor; Wherein, described default skew descriptor comprises: deviant descriptor and migration processing mode descriptor.
Migration processing unit 1202, for according to described default skew descriptor, carries out migration processing to the PID of described pmt table, obtains the PID of AMT table;
AMT shows acquiring unit 1203, for the PID shown according to described AMT, obtains AMT table from TS stream.
Referring to Fig. 9, is the structural representation of an embodiment of parsing module 103 shown in Fig. 7; This parsing module 103 can comprise: reading unit 1301, acquiring unit 1302, resolution unit 1303, search unit 1304.
Reading unit 1301, for obtaining the PID of AIT table from AMT table.
Acquiring unit 1302, for the PID shown according to AIT, obtains AIT table from TS stream.
Resolution unit 1303, for parsing the correlation tag value corresponding with the application that the channel after described switching is associated from AIT table.Wherein, in described AIT table, described the application of channel association by association identification descriptor, and AIT shows application and the correlation tag value one_to_one corresponding of mid band association.
Search unit 1304, for searching the application descriptor matched with described correlation tag value from AMT table.Described application descriptor comprises: any one or more in carousel identifier descriptor, stream identifier descriptor, correlation tag descriptor and data broadcast descriptor.
Referring to Figure 10, is the structural representation of an embodiment of data processing module 104 shown in Fig. 7; This data processing module 104 can comprise: judging unit 1401 and processing unit 1402.
Judging unit 1401, for judging whether described application descriptor comprises carousel identifier descriptor, stream identifier descriptor, correlation tag descriptor and data broadcast descriptor simultaneously.
If judge that described application descriptor comprises carousel identifier descriptor, stream identifier descriptor, correlation tag descriptor and data broadcast descriptor simultaneously, then confirm to there is the application data be associated with the channel after described switching in TS stream.
Processing unit 1402, for when described judging unit is judged as YES, from AMT table, the PID of the data of the application be associated with the channel after described switching is obtained according to described correlation tag value, and according to described PID, from TS stream, parse the data of the application be associated with the channel after described switching.
The embodiment of the present invention carries out the description of the relevant information of channel association application based on AMT table, Digital Television can be made to realize the business of channel association application, turn avoid and brought impact is processed on pmt table, make Digital Television on the basis of not influential system stable operation, achieve the business of channel association application, improve the interactivity of Digital Television.
Referring to Figure 11, is the structural representation of the another kind of receiving terminal for digital television that the embodiment of the present invention provides; This receiving terminal for digital television can comprise: pmt table acquisition module 101, AMT show acquisition module 102, parsing module 103, data processing module 104, display module 105 and output module 106.Wherein, pmt table acquisition module 101, AMT show acquisition module 102, parsing module 103 and data processing module 104 and with reference to the explanation in embodiment illustrated in fig. 7, can be not repeated herein.
Display module 105, for showing the data of the application be associated with the channel after described switching.
Output module 106, for exporting Application Hints information, and when receiving the triggering signal returned based on described Application Hints information, notifies that described display module shows the data of the application be associated with the channel after described switching.
Wherein, described output module 106 is optional module, namely after the data obtaining the application be associated with the channel after switching, can automatically start this application, be shown by the data of display module 105 to this application.
Be understandable that, in the embodiment of the present invention, the function of each functional module of described receiving terminal for digital television can by the method specific implementation in above-mentioned Fig. 1-embodiment illustrated in fig. 6, and its specific implementation process with reference to the associated description of said method embodiment, can not repeat them here.
The embodiment of the present invention carries out the description of the relevant information of channel association application based on AMT table, Digital Television can be made to realize the business of channel association application, turn avoid and brought impact is processed on pmt table, make Digital Television on the basis of not influential system stable operation, achieve the business of channel association application, application simultaneously associated by automatically starting channel or prompting user manually boot this application, thus improve the interactivity of Digital Television.
Referring to Figure 12, is the structural representation of a kind of digital television system that the embodiment of the present invention provides; This digital television system comprises: front-end server and receiving terminal for digital television; Wherein, described receiving terminal for digital television see the associated description in above-mentioned Fig. 7-embodiment illustrated in fig. 11, can be not repeated herein.Be understandable that, the front-end server of the digital television system in the present embodiment and receiving terminal for digital television, all can be applied in the embodiment of the method shown in above-mentioned Fig. 1-Fig. 6.
Described front-end server mainly comprises:
AIT shows creating unit, for the identifier according to each channel with show with the application data stream information creating AIT of this channel association.
AMT shows creating unit, show for the identifier according to each channel, AIT table, application data stream information creating AMT, the structure of described AMT table is identical with pmt table, and the PID of AMT table carries out migration processing by the PID of pmt table according to the skew descriptor preset and obtains.
Multiplexingly broadcast unit, AIT is shown, frequency that application data stream and AMT show to be multiplexed into each channel corresponding broadcasts.
Be understandable that, in order to realize digital television business, front-end server also should carry out a series of process to program source signal, and receiving terminal for digital television also should carry out a series of reverse process to the TS stream received, this processing procedure with reference to prior art, can be not repeated herein.
The embodiment of the present invention carries out the description of the relevant information of channel association application based on AMT table, Digital Television can be made to realize the business of channel association application, turn avoid and brought impact is processed on pmt table, make Digital Television on the basis of not influential system stable operation, achieve the business of channel association application, improve the interactivity of Digital Television.
One of ordinary skill in the art will appreciate that all or part of flow process realized in above-described embodiment method, that the hardware that can carry out instruction relevant by computer program has come, described program can be stored in a computer read/write memory medium, this program, when performing, can comprise the flow process of the embodiment as above-mentioned each side method.Wherein, described storage medium can be magnetic disc, CD, read-only store-memory body (Read-OnlyMemory, ROM) or random store-memory body (RandomAccessMemory, RAM) etc.
Above disclosedly be only present pre-ferred embodiments, certainly can not limit the interest field of the present invention with this, therefore according to the equivalent variations that the claims in the present invention are done, still belong to the scope that the present invention is contained.
Claims (9)
1. process a method for application in Digital Television, it is characterized in that, comprising:
During the channel switch of Digital Television, from the transport stream TS stream that front-end server issues, obtain the Program Map Table pmt table corresponding with the channel after switching;
Skew descriptor according to presetting carries out migration processing to described pmt table, obtains application mapping table AMT table;
Resolve AMT table, obtain the application descriptor of the application be associated with the channel after described switching;
According to described application descriptor, from TS stream, parse the data of the application be associated with the channel after described switching;
Wherein, described parsing AMT shows, and obtains the application descriptor of the application be associated with the channel after described switching, comprising:
The PID of application information table AIT table is read from AMT table;
According to the PID of AIT table, from TS stream, obtain AIT table;
The correlation tag value corresponding with the application that the channel after described switching is associated is resolved from AIT table;
The application descriptor matched with described correlation tag value is searched from AMT table;
Wherein, in described AIT table, described the application of channel association by association identification descriptor, and AIT shows application and the correlation tag value one_to_one corresponding of mid band association;
Described application descriptor comprises: any one or more in carousel identifier descriptor, stream identifier descriptor, correlation tag descriptor and data broadcast descriptor.
2. the method for claim 1, is characterized in that, the skew descriptor that described basis is preset carries out migration processing to described pmt table, obtains AMT table, comprising:
Default skew descriptor is read from the network information table NIT table that front-end server issues, or, from the file that local terminal memory or local terminal store, read default skew descriptor;
According to described default skew descriptor, migration processing is carried out to the identity code transmission package PID of described pmt table, obtain the PID of AMT table;
According to the PID that described AMT shows, from TS stream, obtain AMT table;
Wherein, described default skew descriptor comprises: deviant descriptor and migration processing mode descriptor.
3. the method for claim 1, is characterized in that, described according to described application descriptor, parses the application data be associated with the channel after described switching, comprising from TS stream:
Judge whether described application descriptor comprises carousel identifier descriptor simultaneously, stream identifier descriptor, correlation tag descriptor and data broadcast descriptor;
If so, from AMT table, then obtain the PID of the data of application be associated with the channel after described switching according to correlation tag value, and according to described PID, parse from TS flows with described switching after the data of application of channel association.
4. the method as described in any one of claim 1-3, is characterized in that, described from TS stream parse the application data be associated with the channel after described switching after, also comprise:
Show the data of the application be associated with the channel after described switching; Or,
Exporting Application Hints information, when receiving the triggering signal returned based on described Application Hints information, showing the data of the application be associated with the channel after described switching.
5. a receiving terminal for digital television, is characterized in that, comprising:
Pmt table acquisition module, for when the channel switch of Digital Television, obtains the pmt table corresponding with the channel after switching from the TS stream that front-end server issues;
AMT shows acquisition module, for carrying out migration processing according to the skew descriptor preset to described pmt table, obtains AMT table;
Parsing module, for resolving AMT table, obtains the application descriptor of the application be associated with the channel after described switching;
Data processing module, for according to described application descriptor, parses the data of the application be associated with the channel after described switching from TS stream;
Wherein, described parsing module comprises:
Reading unit, for obtaining the PID of AIT table from AMT table;
Acquiring unit, for the PID shown according to AIT, obtains AIT table from TS stream;
Resolution unit, for parsing the correlation tag value corresponding with the application that the channel after described switching is associated from AIT table;
Search unit, for searching the application descriptor matched with described correlation tag value from AMT table;
Wherein, in described AIT table, described the application of channel association by association identification descriptor, and AIT shows application and the correlation tag value one_to_one corresponding of mid band association;
Described application descriptor comprises: any one or more in carousel identifier descriptor, stream identifier descriptor, correlation tag descriptor and data broadcast descriptor.
6. receiving terminal for digital television as claimed in claim 5, is characterized in that, described AMT shows acquisition module and comprises:
Reading unit, reads default skew descriptor during the NIT for issuing from front-end server shows, or, from the file that local terminal memory or local terminal store, read default skew descriptor;
Migration processing unit, for according to described default skew descriptor, carries out migration processing to the PID of described pmt table, obtains the PID of AMT table;
AMT shows acquiring unit, for the PID shown according to described AMT, obtains AMT table from TS stream;
Wherein, described default skew descriptor comprises: deviant descriptor and migration processing mode descriptor.
7. receiving terminal for digital television as claimed in claim 5, it is characterized in that, described data processing module comprises:
Judging unit, for judging whether described application descriptor comprises carousel identifier descriptor, stream identifier descriptor, correlation tag descriptor and data broadcast descriptor simultaneously;
Processing unit, for when described judging unit is judged as YES, from AMT table, obtain the PID of the data of the application be associated with the channel after described switching according to described correlation tag value, and according to described PID, from TS stream, parse the data of the application be associated with the channel after described switching.
8. the receiving terminal for digital television as described in any one of claim 5-7, is characterized in that, also comprises:
Display module, for showing the data of the application be associated with the channel after described switching;
Output module, for exporting Application Hints information, and when receiving the triggering signal returned based on described Application Hints information, notifies that described display module shows the data of the application be associated with the channel after described switching.
9. a digital television system, comprises front-end server and receiving terminal for digital television, it is characterized in that,
Described front-end server comprises:
AIT shows creating unit, for the identifier according to each channel with show with the application data stream information creating AIT of this channel association;
AMT shows creating unit, show for the identifier according to each channel, AIT table, application data stream information creating AMT, the structure of described AMT table is identical with pmt table, and the PID of AMT table carries out migration processing by the PID of pmt table according to the skew descriptor preset and obtains;
Multiplexingly broadcast unit, AIT is shown, frequency that application data stream and AMT show to be multiplexed into each channel corresponding broadcasts;
Described receiving terminal for digital television is the receiving terminal for digital television such as according to any one of the claims 5-8.
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| CN108322810A (en) * | 2018-02-02 | 2018-07-24 | 深圳广信网络传媒有限公司 | Dynamic media coding/decoding method, apparatus and system based on TS stream encapsulation |
| CN108683940B (en) * | 2018-06-21 | 2020-11-10 | 青岛海信传媒网络技术有限公司 | HBB application display processing method and device |
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