CN102833586A - Method, terminal and system of processing applications in digital television - Google Patents
Method, terminal and system of processing applications in digital television Download PDFInfo
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- CN102833586A CN102833586A CN2012102594217A CN201210259421A CN102833586A CN 102833586 A CN102833586 A CN 102833586A CN 2012102594217 A CN2012102594217 A CN 2012102594217A CN 201210259421 A CN201210259421 A CN 201210259421A CN 102833586 A CN102833586 A CN 102833586A
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Abstract
The embodiment of the invention discloses a method of processing applications in a digital television, a digital television receiving terminal and a digital television system. The method of processing the applications in the digital television comprises the following steps: when channel of the digital television is changed, a progarm map table (PMT) corresponding to the changed channel is obtained from a transport stream (TS) sent by a front end server; the PMT is subjected to an offset treatment according to the preset offset description information, and an application map table (AMT) is obtained; the AMT is analyzed, and the application description information of the application associated with the changed channel is obtained; according to the application description information, the data of the application associated with the changed channel is analyzed from the TS. According to the method, terminal and system of processing applications in digital television, the digital television can be enabled to realize the business of the relevant applications of the channel, the influence caused by the processing of the PMT is avoided, and the business of relevant application of the channel is realized on the basis of not influencing the stable running of the system, thereby improving the interactive property of the digital television.
Description
Technical field
The present invention relates to TV technology, be specifically related to the digital television techniques field, relate in particular to and handle method, terminal and the system that uses in the DTV.
Background technology
It is a kind of interactive service of DTV that channel association is used; Operator can carry out related with application certain channel in advance; The user is when watching the program of this channel; Automatically start the application of this channel association, perhaps point out the user to click the application that starts this channel association, for example: in advance sports channel is associated with victory or defeat ballot application; When the user watches that program in the sports channel (for example: in the time of the football match of France and Brazil), then start the victory or defeat ballot that is associated automatically and use and supply user's ballot of guessing; The ballot of guessing is used in the victory or defeat ballot of perhaps pointing out the respective keys of user through remote controller to start to be associated.
Realization standard according to the channel association applied business; Front-end server need make PMT (Program Map Table; Program Map Table) comprises the application descriptor that is associated with channel in the table; Make the correlation tag value in described correlation tag value of this application descriptor and the described AIT of pmt table (Application Information Table, the application information table) table identical simultaneously.Yet in the existing digital television system based on unilateral network, pmt table is received by front-end server with the program source signal, at first, for the purpose of safety, generally can't make amendment to pmt table, also just can't realize the business that channel association is used; Secondly, front-end server can carry out reconstruct to pmt table when the program source signal is carried out multiplexing process, realizes the business that channel association is used through the reconstruct pmt table, but restructuring procedure can cause the empty window phase of broadcast, influences the broadcast of TV programme.
Summary of the invention
The embodiment of the invention provides and handles method, terminal and the system that uses in a kind of DTV, can on the basis that does not influence existing digital television system stable operation, realize the business of DTV mid band associated application, promotes the interactivity of DTV.
On the one hand, the embodiment of the invention provides handles the method for using in a kind of DTV, comprising:
When the channel of DTV switches, obtain in TS (Transport Stream, the MPTS) stream that issues from front-end server with switch after the corresponding pmt table of channel;
Skew descriptor according to preset is carried out migration processing to said pmt table, obtains AMT (Application Map Table uses mapping table) table;
Resolve the AMT table, obtain with said switching after the application descriptor of the application that is associated of channel;
According to said application descriptor, from TS stream, parse with said switching after the data of the application that is associated of channel.
Wherein, the preset skew descriptor of said basis is carried out migration processing to said pmt table, obtains the AMT table, comprising:
Read preset skew descriptor in NIT (Network Information Table, the network information table) table that issues from front-end server, perhaps, from local terminal memory or local terminal files stored, read preset skew descriptor;
According to said preset skew descriptor, the PID (Packet IDdentifier, identity code transmission package) of said pmt table is carried out migration processing, obtain the PID of AMT table;
According to the PID of said AMT table, from TS stream, obtain the AMT table;
Wherein, said preset skew descriptor comprises: deviant descriptor and migration processing mode descriptor.
Wherein, said parsing AMT table, obtain with said switching after the application descriptor of the application that is associated of channel, comprising:
From the AMT table, read the PID of application information table AIT table;
According to the PID of AIT table, from TS stream, obtain the AIT table;
From AIT table, resolve with said switching after the corresponding correlation tag value of application that is associated of channel;
From the AMT table, search the application descriptor that is complementary with said correlation tag value;
Wherein, describe the application of channel association in the said AIT table through the association identification descriptor, and AIT table mid band application associated is corresponding one by one with the correlation tag value;
Said application descriptor comprises: wheel is broadcast any one or more in identifier descriptor, flow identifier descriptor, correlation tag descriptor and the data broadcasting descriptor.
Wherein, said according to said application descriptor, from TS stream, parse with said switching after the application data that is associated of channel, comprising:
Judge whether said application descriptor comprises wheel simultaneously and broadcast identifier descriptor, flow identifier descriptor, correlation tag descriptor and data broadcasting descriptor;
If, then according to the correlation tag value from AMT table, obtain with said switching after the PID of data of the application that is associated of channel, and according to said PID, from TS stream, parse with said switching after the data of application of channel association.
Wherein, said from TS stream, parse with said switching after the application data that is associated of channel after, also comprise:
Show with said switching after the data of the application that is associated of channel; Perhaps,
Output Application Hints information, when receiving the triggering signal of returning based on said Application Hints information, show with said switching after the data of the application that is associated of channel.
Correspondingly, the embodiment of the invention also provides a kind of receiving terminal for digital television, comprising:
The pmt table acquisition module is used for when the channel of DTV switches, from the TS stream that front-end server issues, obtain with switch after the corresponding pmt table of channel;
AMT shows acquisition module, is used for according to preset skew descriptor said pmt table being carried out migration processing, obtains the AMT table;
Parsing module is used to resolve AMT table, obtain with said switching after the application descriptor of the application that is associated of channel;
Data processing module is used for according to said application descriptor, from TS stream, parse with said switching after the data of the application that is associated of channel.
Wherein, said AMT table acquisition module comprises:
Reading unit is used for reading preset skew descriptor from the NIT table that front-end server issues, and perhaps, from local terminal memory or local terminal files stored, reads preset skew descriptor;
The migration processing unit is used for according to said preset skew descriptor, and the PID of said pmt table is carried out migration processing, obtains the PID of AMT table;
AMT shows acquiring unit, is used for the PID according to said AMT table, from TS stream, obtains the AMT table;
Wherein, said preset skew descriptor comprises: deviant descriptor and migration processing mode descriptor.
Wherein, said parsing module comprises:
Reading unit is used for obtaining the PID that AIT shows from the AMT table;
Acquiring unit is used for the PID according to the AIT table, from TS stream, obtains the AIT table;
Resolution unit, be used for from AIT table parse with said switching after the corresponding correlation tag value of application that is associated of channel;
Search the unit, be used for searching the application descriptor that is complementary with said correlation tag value from the AMT table;
Wherein, describe the application of channel association in the said AIT table through the association identification descriptor, and AIT table mid band application associated is corresponding one by one with the correlation tag value;
Said application descriptor comprises: wheel is broadcast any one or more in identifier descriptor, flow identifier descriptor, correlation tag descriptor and the data broadcasting descriptor.
Wherein, said data processing module comprises:
Judging unit is used to judge whether said application descriptor comprises wheel simultaneously and broadcast identifier descriptor, flow identifier descriptor, correlation tag descriptor and data broadcasting descriptor;
Processing unit; Be used for when said judgment unit judges when being; According to said correlation tag value from AMT table, obtain with said switching after the PID of data of the application that is associated of channel, and according to said PID, from TS stream, parse with said switching after the data of the application that is associated of channel.
Wherein, also comprise:
Display module, be used to show with said switching after the data of the application that is associated of channel;
Output module is used to export Application Hints information, and when receiving the triggering signal of returning based on said Application Hints information, notify said display module show with said switching after the data of the application that is associated of channel.
Correspondingly, the embodiment of the invention also provides a kind of digital television system, comprises front-end server and receiving terminal for digital television, and wherein, said front-end server comprises:
AIT table is created the unit, be used for according to the identifier of each channel and with the application data stream information creating AIT table of this channel association;
The AMT table is created the unit; Be used for identifier, AIT table, application data stream information creating AMT table according to each channel; The structure of said AMT table is identical with pmt table, and the PID of AMT table carries out migration processing by the preset skew descriptor of PID basis of pmt table and obtains;
The multiplexing unit of broadcasting is multiplexed into each channel frequency points corresponding with AIT table, application data stream and AMT table and broadcasts;
Said receiving terminal for digital television is above-mentioned receiving terminal for digital television.
Embodiment of the present invention embodiment has following beneficial effect:
The embodiment of the invention is carried out the description of the relevant information of channel association application based on the AMT table; Can make DTV realize the business that channel association is used; Avoided again pmt table is handled the influence that is brought; Make DTV on the basis that does not influence system stable operation, realized the business that channel association is used, promoted the interactivity of DTV.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art; To do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously, the accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Handle the flow chart of the method for using in a kind of DTV that Fig. 1 provides for the embodiment of the invention;
Fig. 2 is the flow chart of the embodiment of step S102 shown in Figure 1;
Fig. 3 is the flow chart of the embodiment of step S103 shown in Figure 1;
Fig. 4 is the flow chart of the embodiment of step S104 shown in Figure 1;
Handle the flow chart of the method for using in the another kind of DTV that Fig. 5 provides for the embodiment of the invention;
Handle the flow chart of the method for using in another DTV that Fig. 6 provides for the embodiment of the invention;
The structural representation of a kind of receiving terminal for digital television that Fig. 7 provides for the embodiment of the invention;
Fig. 8 is the structural representation of an embodiment of AMT table acquisition module 102 shown in Figure 7;
Fig. 9 is the structural representation of an embodiment of parsing module 103 shown in Figure 7;
Figure 10 is the structural representation of an embodiment of data processing module 104 shown in Figure 7;
The structural representation of the another kind of receiving terminal for digital television that Figure 11 provides for the embodiment of the invention;
The structural representation of a kind of digital television system that Figure 12 provides for the embodiment of the invention.
Embodiment
To combine the accompanying drawing in the embodiment of the invention below, the technical scheme in the embodiment of the invention is carried out clear, intactly description, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.
In the embodiment of the invention, receiving terminal for digital television can for STB (Set Top Box, STB), digital TV integrated machine and other-end equipment with DTV receiving ability.After front-end server carries out a series of processing to the program source signal, for receiving terminal for digital television provides digital television service.Wherein, the program source signal can comprise: signals such as satellite-signal, local coder programme signal, SDH (Synchronous Digital Hierarchy, SDH) transmission signals; Front-end server can comprise the program source Signal Processing: matrix scheduling, multiplexing, scrambling, PSI (Program Specific Information; Processing such as Program Specific Information) insert, PID (Packet IDdentifier, identity code transmission package) remaps.Corresponding to front-end server to the program source Signal Processing, after the TS stream that receiving terminal for digital television issues front-end server carries out reverse process, for the user provides digital television service.
To combine Fig. 1-Fig. 6 below, and handle the method for using in the DTV that the embodiment of the invention is provided and describe in detail.
See also Fig. 1, handle the flow chart of the method for using in a kind of DTV that provides for the embodiment of the invention; This method can may further comprise the steps S101-step S104.
S101, when the channel of DTV switches, from the transport stream TS stream that front-end server issues, obtain with switch after the corresponding pmt table of channel.
In digital television system; The corresponding PMT PID of channel; Promptly corresponding pmt table, the audio stream descriptor, video flowing descriptor and the AIT that have defined this channel in this pmt table show descriptor, comprise the information such as PID of audio stream PID, video flowing PID and the AIT table of this channel.Wherein, The AIT table is a kind of section table of describing apply property; Comprise application title, to use the Starting mode whether be associated, use with channel be to manually boot or the type that starts automatically, use is HTML (Hypertext Markup Language; Hypertext transmission language) uses or inlet file that JAVA uses, uses, the corresponding correlation tag value of application that is associated with channel association identification descriptor of the application that is associated with channel or the like.DTV is carrying out channel when switching, from the TS stream that front-end server issues, obtain with switch after the corresponding pmt table of channel.
S102 carries out migration processing according to preset skew descriptor to said pmt table, obtains the AMT table.
For the business that realizes that channel association is used, avoid simultaneously pmt table is handled the unsettled influence of the system that brings, a kind of AMT of the extra definition of the embodiment of the invention shows to realize the business of channel association application.The AMT table that defines in the embodiment of the invention is identical with the pmt table structure; But the two data carried by data is different; As aforementioned, pmt table mainly carries the audio/video flow and the AIT table descriptor of channel, and the main associated description information of carrying the application that is associated with channel of AMT table; The descriptor that comprises AIT table descriptor and DSMCC (Digital Storage Media Command and Control, digital storage media order and control Extended Protocol) stream.Wherein, in AIT table descriptor and the pmt table defined AIT to show descriptor identical.DSMCC stream be a kind ofly carried application data, based on the primary flow after the DSMCC protocol encapsulation; The descriptor of DSMCC stream has been described the incidence relation of using in the DSMCC stream with channel; And the PID of the data of the application that is associated with channel, the descriptor of this DSMCC stream comprises: wheel is broadcast any one or more in identifier descriptor (Carousel_Identifier_Descriptor), flow identifier descriptor (Stream_Identifier_Descriptor), correlation tag descriptor (Association_Tag_Descriptor) and the data broadcasting descriptor (Data_Broadcast_Descriptor).This shows that among the present invention, a pmt table is corresponding with an AMT table, the corresponding AMT table of channel.
In order to set up the contact between pmt table and the AMT table; The PID that can define the AMT table in advance is that the PID of the corresponding pmt table of same channel adds a deviant; The mode of this migration processing can be described through the skew descriptor; Through pmt table is carried out migration processing, then can obtain corresponding AMT table.The Table ID of AMT table can carry out unified planning and distribution according to Carrier Requirements by front end, and making up needed other information of AMT table can the reference number television standard and the prior agreement of pmt table is filled.Front-end server will carry to be multiplexed in the TS stream of frequency at corresponding channel place with AMT table, AIT table, the DSMCC stream of the application descriptor of channel association and carry out data penetration transmission, be issued to receiving terminal for digital television then.
S103 resolves the AMT table, obtain with said switching after the application descriptor of the application that is associated of channel.
As aforementioned, defined the descriptor of AIT table descriptor and DSMCC stream in the AMT table.Wherein, The AIT table is a kind of section table of describing apply property; Comprise application title, to use the Starting mode whether be associated, use with channel be to manually boot or the type that starts automatically, use is that HTML uses or JAVA uses, the inlet file of application, the corresponding correlation tag value of application that is associated with channel, association identification descriptor of the application that is associated with channel or the like.The descriptor of DSMCC stream has been described the incidence relation of using in the DSMCC stream with channel, and the PID of the data of the application that is associated with channel.The descriptor of DSMCC stream comprises: wheel is broadcast any one or more in identifier descriptor, flow identifier descriptor, correlation tag descriptor and the data broadcasting descriptor.In this step, resolve the AMT table then can know whether exist with switching after the application that is associated of channel, and can obtain the application descriptor of this application.
S104, according to said application descriptor, from TS stream, parse with said switching after the data of the application that is associated of channel.The application descriptor of the application that is associated according to the channel with after switching of above-mentioned acquisition can parse the data of this application descriptor application described, that be associated with channel after the said switching from TS stream.
To each step in embodiment illustrated in fig. 1 be described in detail below.
See also Fig. 2, be the flow chart of the embodiment of step S102 shown in Figure 1; This step S102 can may further comprise the steps:
S1201 reads preset skew descriptor from the NIT table that front-end server issues, perhaps, from local terminal memory or local terminal files stored, read preset skew descriptor.
Wherein, preset skew descriptor has been described the relation between pmt table and the AMT table.In concrete the realization; Can be in advance in the NIT table, add said preset skew descriptor, also can be when the search program said preset skew descriptor (for example: the Flash memory) or in certain file be stored in memory in the receiving terminal for digital television.This step can be through resolving NIT table, perhaps, from the memory of this locality or files stored, reads this preset skew descriptor.
S1202 according to said preset skew descriptor, carries out migration processing to the identity code transmission package PID of said pmt table, obtains the PID of AMT table.
Wherein, said preset skew descriptor can comprise: deviant descriptor and migration processing mode descriptor.The deviant descriptor is described the concrete numerical value that squints; For example: 5,10 etc., migration processing mode descriptor has described how to carry out migration processing, for example: on the PID basis of pmt table, add deviant; Or on the PID basis of pmt table, deduct deviant, or the like.After according to said preset skew descriptor the PID of pmt table being carried out migration processing, then can obtain the PID of AMT table.
S1203 according to the PID of said AMT table, obtains the AMT table from TS stream.
See also Fig. 3, be the flow chart of the embodiment of step S102 shown in Figure 1; Step S103 can may further comprise the steps:
S1301 reads the PID that application information table AIT shows from the AMT table.
Can know by the description in embodiment illustrated in fig. 1, define AIT table descriptor in the AMT table, comprise the PID of AIT table.In this step, then can from the AMT table, read the PID of AIT table.
S1302 according to the PID of AIT table, obtains the AIT table from TS stream.
S1303, from AIT table, resolve with said switching after the corresponding correlation tag value of application that is associated of channel.
The AIT table is a kind of section table of describing apply property; Comprise application title, to use the Starting mode whether be associated, use with channel be to manually boot or the type that starts automatically, use is that HTML uses or JAVA uses, the inlet file of application, the corresponding correlation tag value of application that is associated with channel, association identification descriptor of the application that is associated with channel or the like.Usually, an AIT shows the application of one type of regulation, comprises one or more application, and each uses corresponding correlation tag value.In the practical application, channel can corresponding a plurality of AIT tables, but only bind with an application usually, realize through whether the descriptor of binding with channel is set in the AIT table.In this step, said AIT table is resolved, then can be from the AIT table to the description of using attribute, obtain with switching after the pairing correlation tag value of application that is associated of channel.
S1304 searches the application descriptor that is complementary with said correlation tag value from the AMT table.
As aforementioned, comprise the descriptor of DSMCC stream in the AMT table, it has described the incidence relation of using in the DSMCC stream with channel, and the PID of the data of the application that is associated with channel.The descriptor of DSMCC stream can comprise: wheel is broadcast any one or more in identifier descriptor, flow identifier descriptor, correlation tag descriptor and the data broadcasting descriptor.Search the application descriptor of corresponding with correlation tag value application, i.e. DSMCC stream description information according to said correlation tag value at AMT table.Wherein, The corresponding relating value of application that is associated with channel has all been described in flow identifier descriptor and the correlation tag descriptor; Realize the business that channel association is used, the association value of describing in the DSMCC stream description information that is associated with channel should be identical with the correlation tag value of the same application that is associated with channel described in the AIT table.In this step, then can from the AMT table, search the DSMCC stream description information identical according to the correlation tag value of step s1303 acquisition from the AIT table with this correlation tag value.
See also Fig. 4, be the flow chart of the embodiment of step S104 shown in Figure 1; This step S104 can may further comprise the steps:
S1401 judges whether said applications descriptor comprises wheel simultaneously and broadcast identifier descriptor, flow identifier descriptor, correlation tag descriptor and data broadcasting descriptor.If judged result is for being to change s1402 over to; Otherwise, finish.
When specifically judging; If said application descriptor (descriptor of DSMCC stream) comprises wheel simultaneously and broadcasts identifier descriptor; Flow identifier descriptor, correlation tag descriptor and data broadcasting descriptor, then can confirm to exist in the TS stream with said switching after the application data that is associated of channel.Wherein, according to the technical standard of DTV, the said value of broadcasting identifier descriptor of taking turns should be standard value 0x13, and the value of said data broadcasting descriptor should be standard value 0x14.
S1402, according to said correlation tag value from AMT table, obtain with said switching after the PID of data of the application that is associated of channel.
Search the application descriptor of corresponding with correlation tag value application, i.e. DSMCC stream description information according to said correlation tag value at AMT table.The descriptor of DSMCC stream has been described the incidence relation of application and channel, and the PID of the data of the application that is associated with channel.Resolve the descriptor of said DSMCC stream, the PID of the data of the application that then can obtain to be associated with channel.
S1403, according to said PID, from TS stream, parse with said switching after the data of application of channel association.
According to the PID of the data of the application that obtains, can from TS stream, parse with switch after the data of the application that is associated of channel.Need to prove that because the form of expression of the application data in the TS stream is a DSMCC stream, promptly the application data of the acquisition in the TS stream is the primary flow after the DSMCC protocol encapsulation.In this step, from TS stream, obtain after the DSMCC stream, can resolve this DSMCC stream based on the DSMCC agreement, thus reducible obtain with switch after the data of the application that is associated of channel.
The embodiment of the invention is carried out the description of the relevant information of channel association application based on the AMT table; Can make DTV realize the business that channel association is used; Avoided again pmt table is handled the influence that is brought; Make DTV on the basis that does not influence system stable operation, realized the business that channel association is used, promoted the interactivity of DTV.
See also Fig. 5, handle the flow chart of the method for using in the another kind of DTV that provides for the embodiment of the invention; This method can may further comprise the steps:
S201, when the channel of DTV switches, from the transport stream TS stream that front-end server issues, obtain with switch after the corresponding pmt table of channel.
S202 carries out migration processing according to preset skew descriptor to said pmt table, obtains to use mapping table AMT table.
S203 resolves the AMT table, obtain with said switching after the application descriptor of the application that is associated of channel.
S204, according to said application descriptor, from TS stream, parse with said switching after the data of the application that is associated of channel.
Step S201-step S204 in the present embodiment can repeat no more at this referring to step S101-step S104 shown in Figure 1.
S205, show with said switching after the data of the application that is associated of channel.
Obtain with switching after the data of the application that is associated of channel after, can start automatically with said switching after the application that is associated of channel, show the data of this application.
The embodiment of the invention is carried out the description of the relevant information of channel association application based on the AMT table; Can make DTV realize the business that channel association is used; Avoided again pmt table is handled the influence that is brought, made DTV on the basis that does not influence system stable operation, realized the business that channel association is used; The application that is associated with channel of automatically starting has simultaneously promoted the interactivity of DTV.
See also Fig. 6, handle the flow chart of the method for using in another DTV that provides for the embodiment of the invention; This method can may further comprise the steps:
S301, when the channel of DTV switches, from the transport stream TS stream that front-end server issues, obtain with switch after the corresponding pmt table of channel.
S302 carries out migration processing according to preset skew descriptor to said pmt table, obtains to use mapping table AMT table.
S303 resolves the AMT table, obtain with said switching after the application descriptor of the application that is associated of channel.
S304, according to said application descriptor, from TS stream, parse with said switching after the data of the application that is associated of channel.
Step S301-step S304 in the present embodiment can repeat no more at this referring to step S101-step S104 shown in Figure 1.
S305, output Application Hints information.
In this step, export information in the display frame of channel that can be after switching, corresponding application and the link of this channel of prompting user.For example: can export an Application Hints information in the upper right corner of the channel after the said switching, there is the application that is associated in this information indication current channel, and indicates the link of this application.
S306 when receiving the triggering signal of returning based on said Application Hints information, shows said application data.
Wherein, Triggering signal can be pressed the signal that button sent in the remote controller according to Application Hints information for the user; After receiving this triggering signal, then can according to the link of using start with said switching after the application that is associated of channel, show the data of said application.
Need to prove; Present embodiment and difference embodiment illustrated in fig. 5 are: the Starting mode to channel institute application associated embodiment illustrated in fig. 5 is startup automatically; Starting mode the manually booting for user of present embodiment to using; In the practical application, the Starting mode of the application that channel is associated can be according to confirming for the description of the attribute of using in the AIT table.
The embodiment of the invention is carried out the description of the relevant information of channel association application based on the AMT table; Can make DTV realize the business that channel association is used; Avoided again pmt table is handled the influence that is brought, made DTV on the basis that does not influence system stable operation, realized the business that channel association is used; Simultaneously can point out the user to manually boot the application that is associated with channel, promote the interactivity of DTV.
Explain with an instantiation below and handle the method for using in the DTV provided by the invention.
Suppose that CCTV5 is playing the TV programme of football match; Operator wants the Java of related victory or defeat guess to use; Then the PID of the pmt table of predeterminable CCTV5 is 1200; The PID of AMT table is 1205 (deviant is 5, and the migration processing mode is for adding deviant on the PID basis of PMT), and in the NIT table, adds descriptor and describe this preset skew descriptor.
When switching to CCTV5, front-end server carries out data penetration transmission with AMT table, AIT table, the multiplexing frequency to the CCTV5 place of DSMCC stream, TS is flowed down send to receiving terminal for digital television.After the method that the processing that receiving terminal for digital television execution the foregoing description is described is used; Can show directly that this application data supplies user's guess; Also can show Application Hints information at the channel of CCTV5; Send triggering signal by the user through clicking remote controller, trigger startup victory or defeat guess and use, and show that application data supplies the user to guess.
The embodiment of the invention is carried out the description of the relevant information of channel association application based on the AMT table; Can make DTV realize the business that channel association is used; Avoided again pmt table is handled the influence that is brought; Make DTV on the basis that does not influence system stable operation, realized the business that channel association is used, promoted the interactivity of DTV.
Corresponding to the embodiment that handles the method for using in the above-mentioned DTV; To combine Fig. 7-Figure 11 below; The receiving terminal for digital television that the embodiment of the invention is provided describes in detail; Need to prove that following receiving terminal for digital television can be applied in the described method of above-mentioned arbitrary embodiment.
See also Fig. 7, the structural representation of a kind of receiving terminal for digital television that provides for the embodiment of the invention; 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 is used for when the channel of DTV switches, from the TS stream that front-end server issues, obtain with switch after the corresponding pmt table of channel.
AMT shows acquisition module 102, is used for according to preset skew descriptor said pmt table being carried out migration processing, obtains the AMT table.
Parsing module 103 is used to resolve AMT table, obtain with said switching after the application descriptor of the application that is associated of channel.
To each module in embodiment illustrated in fig. 7 be described in detail below.
See also Fig. 8, show the structural representation of an embodiment of acquisition module 102 for AMT shown in Figure 7; This migration processing module 102 can comprise: reading unit 1201, migration processing unit 1202 and AMT table acquiring unit 1203.
AMT shows acquiring unit 1203, is used for the PID according to said AMT table, from TS stream, obtains the AMT table.
See also Fig. 9, be the structural representation of an embodiment of parsing module 103 shown in Figure 7; This parsing module 103 can comprise: reading unit 1301, acquiring unit 1302, resolution unit 1303, search unit 1304.
Acquiring unit 1302 is used for the PID according to the AIT table, from TS stream, obtains the AIT table.
See also Figure 10, be the structural representation of an embodiment of data processing module 104 shown in Figure 7; This data processing module 104 can comprise: judging unit 1401 and processing unit 1402.
Judging unit 1401 is used to judge whether said application descriptor comprises wheel simultaneously and broadcast identifier descriptor, flow identifier descriptor, correlation tag descriptor and data broadcasting descriptor.
Comprise wheel simultaneously and broadcast identifier descriptor if judge said application descriptor, flow identifier descriptor, correlation tag descriptor and data broadcasting descriptor, then confirm to exist in the TS stream with said switching after the application data that is associated of channel.
The embodiment of the invention is carried out the description of the relevant information of channel association application based on the AMT table; Can make DTV realize the business that channel association is used; Avoided again pmt table is handled the influence that is brought; Make DTV on the basis that does not influence system stable operation, realized the business that channel association is used, promoted the interactivity of DTV.
See also Figure 11, the structural representation of the another kind of receiving terminal for digital television that provides for the embodiment of the invention; This receiving terminal for digital television can comprise: pmt table acquisition module 101, AMT table acquisition module 102, parsing module 103, data processing module 104, display module 105 and output module 106.Wherein, pmt table acquisition module 101, AMT table acquisition module 102, parsing module 103 and data processing module 104 can not given unnecessary details at this with reference to the explanation in embodiment illustrated in fig. 7.
Wherein, said output module 106 is optional module, promptly obtain with switching after the data of the application that is associated of channel after, can start this application automatically, the data through 105 pairs of these application of display module show.
It is understandable that; In the embodiment of the invention; The function of each functional module of said receiving terminal for digital television can realize that specifically its concrete implementation procedure can repeat no more at this with reference to the associated description of said method embodiment through the method among above-mentioned Fig. 1-embodiment illustrated in fig. 6.
The embodiment of the invention is carried out the description of the relevant information of channel association application based on the AMT table; Can make DTV realize the business that channel association is used; Avoided again pmt table is handled the influence that is brought, made DTV on the basis that does not influence system stable operation, realized the business that channel association is used; Automatically starting channel institute's application associated or prompting user manually boot this application simultaneously, thereby have promoted the interactivity of DTV.
See also Figure 12, the structural representation of a kind of digital television system that provides for the embodiment of the invention; This digital television system comprises: front-end server and receiving terminal for digital television; Wherein, said receiving terminal for digital television can not given unnecessary details at this referring to the associated description among above-mentioned Fig. 7-embodiment illustrated in fig. 11.It is understandable that digital television system front end server and receiving terminal for digital television in the present embodiment all can be applied among the method embodiment of above-mentioned Fig. 1-shown in Figure 6.
Said front-end server mainly comprises:
AIT table is created the unit, be used for according to the identifier of each channel and with the application data stream information creating AIT table of this channel association.
The AMT table is created the unit; Be used for identifier, AIT table, application data stream information creating AMT table according to each channel; The structure of said AMT table is identical with pmt table, and the PID of AMT table carries out migration processing by the preset skew descriptor of PID basis of pmt table and obtains.
The multiplexing unit of broadcasting is multiplexed into each channel frequency points corresponding with AIT table, application data stream and AMT table and broadcasts.
It is understandable that; In order to realize digital television business, front-end server also should carry out a series of processing to the program source signal, and receiving terminal for digital television also should carry out a series of reverse process to the TS stream that receives; This processing process can not given unnecessary details at this with reference to prior art.
The embodiment of the invention is carried out the description of the relevant information of channel association application based on the AMT table; Can make DTV realize the business that channel association is used; Avoided again pmt table is handled the influence that is brought; Make DTV on the basis that does not influence system stable operation, realized the business that channel association is used, promoted the interactivity of DTV.
One of ordinary skill in the art will appreciate that all or part of flow process that realizes in the foregoing description method; Be to instruct relevant hardware to accomplish through computer program; Described program can be stored in the computer read/write memory medium; This program can comprise the flow process like the embodiment of above-mentioned each side method when carrying out.Wherein, described storage medium can be magnetic disc, CD, read-only storage memory body (Read-Only Memory, ROM) or at random store memory body (Random Access Memory, RAM) etc.
Above disclosedly be merely preferred embodiment of the present invention, can not limit the present invention's interest field certainly with this, the equivalent variations of therefore doing according to claim of the present invention still belongs to the scope that the present invention is contained.
Claims (11)
1. handle the method for using in a DTV, it is characterized in that, comprising:
When the channel of DTV switches, from the transport stream TS stream that front-end server issues, obtain with switch after the corresponding Program Map Table pmt table of channel;
Skew descriptor according to preset is carried out migration processing to said pmt table, obtains to use mapping table AMT table;
Resolve the AMT table, obtain with said switching after the application descriptor of the application that is associated of channel;
According to said application descriptor, from TS stream, parse with said switching after the data of the application that is associated of channel.
2. the method for claim 1 is characterized in that, the preset skew descriptor of said basis is carried out migration processing to said pmt table, obtains the AMT table, comprising:
From the network information table NIT table that front-end server issues, read preset skew descriptor, perhaps, from local terminal memory or local terminal files stored, read preset skew descriptor;
According to said preset skew descriptor, the identity code transmission package PID of said pmt table is carried out migration processing, obtain the PID of AMT table;
According to the PID of said AMT table, from TS stream, obtain the AMT table;
Wherein, said preset skew descriptor comprises: deviant descriptor and migration processing mode descriptor.
3. the method for claim 1 is characterized in that, said parsing AMT table, obtain with said switching after the application descriptor of the application that is associated of channel, comprising:
From the AMT table, read the PID of application information table AIT table;
According to the PID of AIT table, from TS stream, obtain the AIT table;
From AIT table, resolve with said switching after the corresponding correlation tag value of application that is associated of channel;
From the AMT table, search the application descriptor that is complementary with said correlation tag value;
Wherein, describe the application of channel association in the said AIT table through the association identification descriptor, and AIT table mid band application associated is corresponding one by one with the correlation tag value;
Said application descriptor comprises: wheel is broadcast any one or more in identifier descriptor, flow identifier descriptor, correlation tag descriptor and the data broadcasting descriptor.
4. method as claimed in claim 3 is characterized in that, and is said according to said application descriptor, from TS stream, parse with said switching after the application data that is associated of channel, comprising:
Judge whether said application descriptor comprises wheel simultaneously and broadcast identifier descriptor, flow identifier descriptor, correlation tag descriptor and data broadcasting descriptor;
If, then according to the correlation tag value from AMT table, obtain with said switching after the PID of data of the application that is associated of channel, and according to said PID, from TS stream, parse with said switching after the data of application of channel association.
5. like each described method of claim 1-4, it is characterized in that, said from TS stream, parse with said switching after the application data that is associated of channel after, also comprise:
Show with said switching after the data of the application that is associated of channel; Perhaps,
Output Application Hints information, when receiving the triggering signal of returning based on said Application Hints information, show with said switching after the data of the application that is associated of channel.
6. a receiving terminal for digital television is characterized in that, comprising:
The pmt table acquisition module is used for when the channel of DTV switches, from the TS stream that front-end server issues, obtain with switch after the corresponding pmt table of channel;
AMT shows acquisition module, is used for according to preset skew descriptor said pmt table being carried out migration processing, obtains the AMT table;
Parsing module is used to resolve AMT table, obtain with said switching after the application descriptor of the application that is associated of channel;
Data processing module is used for according to said application descriptor, from TS stream, parse with said switching after the data of the application that is associated of channel.
7. receiving terminal for digital television as claimed in claim 6 is characterized in that, said AMT table acquisition module comprises:
Reading unit is used for reading preset skew descriptor from the NIT table that front-end server issues, and perhaps, from local terminal memory or local terminal files stored, reads preset skew descriptor;
The migration processing unit is used for according to said preset skew descriptor, and the PID of said pmt table is carried out migration processing, obtains the PID of AMT table;
AMT shows acquiring unit, is used for the PID according to said AMT table, from TS stream, obtains the AMT table;
Wherein, said preset skew descriptor comprises: deviant descriptor and migration processing mode descriptor.
8. receiving terminal for digital television as claimed in claim 6 is characterized in that, said parsing module comprises:
Reading unit is used for obtaining the PID that AIT shows from the AMT table;
Acquiring unit is used for the PID according to the AIT table, from TS stream, obtains the AIT table;
Resolution unit, be used for from AIT table parse with said switching after the corresponding correlation tag value of application that is associated of channel;
Search the unit, be used for searching the application descriptor that is complementary with said correlation tag value from the AMT table;
Wherein, describe the application of channel association in the said AIT table through the association identification descriptor, and AIT table mid band application associated is corresponding one by one with the correlation tag value;
Said application descriptor comprises: wheel is broadcast any one or more in identifier descriptor, flow identifier descriptor, correlation tag descriptor and the data broadcasting descriptor.
9. receiving terminal for digital television as claimed in claim 8 is characterized in that, said data processing module comprises:
Judging unit is used to judge whether said application descriptor comprises wheel simultaneously and broadcast identifier descriptor, flow identifier descriptor, correlation tag descriptor and data broadcasting descriptor;
Processing unit; Be used for when said judgment unit judges when being; According to said correlation tag value from AMT table, obtain with said switching after the PID of data of the application that is associated of channel, and according to said PID, from TS stream, parse with said switching after the data of the application that is associated of channel.
10. like each described receiving terminal for digital television of claim 6-9, it is characterized in that, also comprise:
Display module, be used to show with said switching after the data of the application that is associated of channel;
Output module is used to export Application Hints information, and when receiving the triggering signal of returning based on said Application Hints information, notify said display module show with said switching after the data of the application that is associated of channel.
11. a digital television system comprises front-end server and receiving terminal for digital television, it is characterized in that,
Said front-end server comprises:
AIT table is created the unit, be used for according to the identifier of each channel and with the application data stream information creating AIT table of this channel association;
The AMT table is created the unit; Be used for identifier, AIT table, application data stream information creating AMT table according to each channel; The structure of said AMT table is identical with pmt table, and the PID of AMT table carries out migration processing by the preset skew descriptor of PID basis of pmt table and obtains;
The multiplexing unit of broadcasting is multiplexed into each channel frequency points corresponding with AIT table, application data stream and AMT table and broadcasts;
Said receiving terminal for digital television is like each described receiving terminal for digital television among the above-mentioned claim 6-10.
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| CN102833586B (en) | 2015-12-09 |
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