CN1859558A

CN1859558A - Digital TV telecast system and its method based on radio transmission

Info

Publication number: CN1859558A
Application number: CN 200610058664
Authority: CN
Inventors: 李智斌; 张勤伟
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2006-03-06
Filing date: 2006-03-06
Publication date: 2006-11-08

Abstract

The present invention discloses wireless transmission based digital television broadcasting system. It contains user side and network side, wherein user side including wireless communication terminal, transmitting user participation digital television broadcast program interactive data stream to network side through wireless transmission, and receiving and playing network side down sent interactive data stream overlapped digital television broadcast program; network side including interactive processing unit, processing wireless communication terminal sent interactive data stream into data format capable of overlapping with network side digital television broadcast program data stream; data overlap device; broadcast down transmitting device. The present invention makes wireless transmission digital television system capable of realizing user with broadcast program interaction.

Description

Digital television broadcasting system and method thereof based on wireless transmission

Technical field

The present invention relates to the digital TV broadcasting service technical field, especially relate to a kind of digital television broadcasting system and method thereof based on wireless transmission.

Background technology

The implementation of digital television broadcasting generally is to issue digital television broadcasting program by broadcast channel, and provides exchange channels to communicate for user and digital television broadcasting server.Present digital TV broadcasting service form mainly includes Digital Television, Web TV and mobile TV etc., wherein the main difference of digital TV broadcasting service and traditional simulated television business is embodied in digital TV broadcasting service and can realizes interactive communication between demand (telecommunication) service and digital television broadcasting server and the user.Digital TV broadcasting service realizes that the maximum effect of interactive communication is embodied in the user and can carries out request program, and perhaps the user is initiatively from digital television broadcasting server download message etc.

Be accompanied by the constantly perfect of mobile communication technology, especially the release of the third generation and next generation mobile communication technical standard, the communications bandwidth that mobile communication system can be supported is increasing gradually, as having transmitted dynamic drawing, animation or support watching of online movie and video programs etc. in 3-G (Generation Three mobile communication system).Continuous development in view of mobile communication technology, proposed at present digital television broadcasting system and mobile communication system are carried out combination, by user terminal is carried out upgrade expanding, thereby realize making the mobile subscriber just can watch the broadcast TV program that digital television broadcasting system issues by the mobile terminal device of self, for example industry is developing perfect mobile TV technology etc. at present.

But the digital TV broadcasting service that is based on mobile communication system is in the process of carrying out, when also not having relevant technology to be described in the digital television broadcasting program that the user watches that digital television broadcasting system issues, the user can be uploaded to the digital television broadcasting server by the mobile communication system transmission channel by the terminal equipment scene information that self is current, thereby realizes participating in the TV programme of Live Audio.This shows, in digital TV broadcasting service based on mobile communication system, relevant user participates in the TV programme of Live Audio as the transmission channel that participates in data by the mobile communication system transmission channel, correlation technique with the interaction of realization live show is perfect not enough, therefore just need do further expansion based on the digital TV broadcasting service technology of mobile communication system, so that the mobile digital TV broadcasting service can support the live show of user and digital television broadcasting system side to carry out interaction to existing.

Summary of the invention

The technical problem to be solved in the present invention is to propose a kind of digital television broadcasting system and method thereof based on wireless transmission, so that can realize the user and the digital television broadcasting program that broadcasting carries out interaction based on the digital television broadcasting system of radiolink transmission.

For addressing the above problem, the technical scheme that the present invention proposes is as follows:

A kind of digital television broadcasting system based on wireless transmission comprises user side and network side, and described user side comprises:

Wireless communication terminal, the interactive data stream that is used for the user is participated in digital television broadcasting program is sent to network side by wireless transmission channel, and is used to receive and the playing network side issues is superimposed with the digital television broadcasting program of the interactive data stream that the user participates in;

Described network side comprises:

The interactive processing device is used for the interactive data stream that described wireless communication terminal is sent by wireless transmission channel is processed into the data format that can superpose with the digital television broadcasting program data flow of network side broadcasting;

The stacked data feeder apparatus is used for the digital television broadcasting program data flow of interactive data stream after the described interactive processing device processing and network side broadcasting is carried out the data overlap-add procedure;

Broadcasting is transmitting apparatus down, is used for described stacked data feeder apparatus superimposed data stream is carried out being handed down to described wireless communication terminal by broadcast channel after coded modulation handles.

Preferably, described wireless communication terminal specifically comprises:

Data acquisition unit is used for when the user participates in digital television broadcasting program, and the multi-medium data of gathering user's environment of living in flows as interactive data;

Data transmission unit after the interactive data stream encryption modulation that is used for described data acquisition unit is collected, is sent to network side by wireless transmission channel;

The Data Receiving unit is used to receive that network side issues is superimposed with the digital television broadcasting program of the interactive data stream that the user participates in;

The playing programs unit is used for that the digital television broadcasting program data flow that the interactive data that is superimposed with user's participation that described Data Receiving unit receives flows is carried out playing to the user after demodulating and decoding is handled and watches.

Preferably, described wireless communication terminal is:

Mobile phone terminal with multimedia information acquisition parts; Or

Personal digital assistant terminal with multimedia information acquisition parts; Or

The unit equipment that makes up by digital television receiver and the terminal that possesses the wireless broadband communication ability.

Preferably, described interactive processing device specifically comprises:

Interactive control unit is used for that the interactive link that the user can participate in digital television broadcasting program is begun message and termination messages is notified to the user, and interactive process is monitored; Also be used for simultaneously determining one group of Control Parameter that is used for interactive data stream is carried out conversion process according to the property parameters of the digital television broadcasting program data flow of network side broadcasting;

The data conversion treatment unit is used for being processed into the data format that can superpose with the digital television broadcasting program data flow of network side broadcasting according to one group of Control Parameter that described interactive control unit is determined is sent described wireless communication terminal by wireless transmission channel interactive data stream translation.

Preferably, described interactive control unit is notified to the user by send data-message to wireless communication terminal with the beginning message and the termination messages of interactive link.

Preferably, described interactive control unit is notified to the user by insert captions message in the digital television broadcasting program data flow that network side broadcasting issues with the beginning message and the termination messages of interactive link.

Preferably, described interactive processing device also comprises data identification unit, be used for identifying the interactive data stream that the user participates in digital television broadcasting program, and send to described data conversion treatment unit and carry out conversion process in the data that wireless communication terminal is sent by wireless transmission channel.

Preferably, described interactive processing device also comprises first data buffer storage unit, be used for that the interactive data that wireless communication terminal is sent by wireless transmission channel is flow to row cache and handle, described data conversion treatment unit extracts interaction data stream and carries out conversion process from described first data buffer storage unit.

Preferably, described interactive processing device also comprises the participating user queued units, be used for according to the rules strategy and participate in the processing of ranking of interactive participating user sending request, described interactive control unit is selected each participating user successively according to the queuing result of described participating user queued units, and sends the beginning message of interactive link to the participating user of selecting.

Preferably, described participating user queued units according to the priority orders of each participating user successively to the processing of ranking of each participating user.

Preferably, described participating user queued units according to each participating user send participate in interactive request message sequencing successively to the processing of ranking of each participating user.

Preferably, described interactive processing device also comprises display unit, is used to show the user related information of each participating user.

Preferably, described stacked data feeder apparatus specifically comprises:

Second data buffer storage unit, the interactive data that is used for after the described interactive processing device of buffer memory is handled flows;

Data stack processing unit is used for the interactive data stream at described second data buffer storage unit extraction buffer memory, and carries out overlap-add procedure with the digital television broadcasting program data flow that the network side content server provides.

Preferably, transmitting apparatus specifically comprises under the described broadcasting:

The coded modulation unit is used for that the data flow after the described stacked data feeder apparatus overlap-add procedure is carried out coded modulation and handles;

The broadcast distribution unit, be used for the digital television broadcasting program of the interactive data stream that is superimposed with user's participation after the described coded modulation cell processing is distributed to each broadcast transmitter, the digital television broadcasting program that will be superimposed with the interactive data stream of user's participation by described each broadcast transmitter is handed down to described wireless communication terminal by broadcast channel.

Preferably, the following transmitting apparatus of described interactive processing device, stacked data feeder apparatus and broadcasting places the digital television broadcasting server of network side simultaneously.

Preferably, transmitting apparatus places the digital television broadcasting server of network side simultaneously under described stacked data feeder apparatus and the broadcasting, and described interactive processing device places the peripheral miscellaneous equipment of digital television broadcasting server.

Preferably, the described wireless communication terminal interactive data stream that the user participated in digital television broadcasting program is sent to network side by the transmission channel of mobile communication system.

Preferably, after the data flow of transmitting apparatus after with described stacked data feeder apparatus overlap-add procedure carried out coded modulation under the described broadcasting, the broadcast channel by mobile communication system was handed down to wireless communication terminal.

Preferably, after the data flow of transmitting apparatus after with described stacked data feeder apparatus overlap-add procedure carried out coded modulation under the described broadcasting, the broadcast channel by the wireless digital broadcasting television network was handed down to wireless communication terminal.

A kind of digital television broadcasting method based on wireless transmission comprises step:

The interactive data stream that user side will participate in the digital television broadcasting program of network side broadcasting is sent to network side by wireless transmission channel;

Network side is sent user side by wireless transmission channel interactive data stream is processed into the data format that can superpose with the digital television broadcasting program data flow of network side broadcasting; And

The digital television broadcasting program data flow of interactive data stream after handling and network side broadcasting is carried out the data overlap-add procedure;

The data flow of network side after with overlap-add procedure carries out being issued to user side by broadcast channel and playing after coded modulation handles.

Preferably, described method comprises that also network side notifies user side can participate in the digital television broadcasting program that network side broadcasting by send data-message to user side.

Preferably, described method comprises that also network side inserts captions message and notifies the user can participate in the digital television broadcasting program that network side broadcasting in the digital television broadcasting program data flow of broadcasting.

Preferably, described wireless transmission channel is the transmission channel in the mobile communication system.

Preferably, the process handled of described network side interactive data stream that user side is sent specifically comprises:

Network side is determined one group of Control Parameter that is used for interactive data stream is carried out conversion process according to the property parameters of the digital television broadcasting program data flow of broadcasting; And

The interactive data stream translation of user side being sent by wireless transmission channel according to this group Control Parameter of determining is processed into the data format that can superpose with the digital television broadcasting program data flow of network side broadcasting.

Preferably, the interactive data stream after network side will be handled becomes the form of picture-in-picture with the digital television broadcasting program data flow overlap-add procedure of network side broadcasting.

Preferably, the superposition of data streaming of network side after with coded modulation is issued to each base station transmitter; By described each base station transmitter superposition of data stream being sent to user side by the broadcast channel in the mobile communication system plays.

Preferably, the superposition of data streaming of network side after with coded modulation is issued to each digital television broadcasting transmitter; By described each digital television broadcasting transmitter superposition of data stream being sent to user side by the broadcast channel in the wireless digital broadcasting television network plays.

The beneficial effect that the present invention can reach is as follows:

Technical solution of the present invention is by introducing the interactive processing link that the user participates in digital television broadcasting program by wireless transmission method between digital television broadcasting system side and user side, make and to realize the user and the digital television broadcasting program that broadcasting carries out interaction, thereby enriched diversity based on the digital TV broadcasting service of wireless transmission link transmission signals based on the digital television broadcasting system of radiolink transmission.

Description of drawings

Fig. 1 is the total system frame structure schematic diagram that the present invention is based on the digital television broadcasting system of wireless transmission;

Fig. 2 is the concrete composition structured flowchart of wireless communication terminal in the system of the present invention;

Fig. 3 is the concrete composition structured flowchart of interactive processing device in the system of the present invention;

Fig. 4 is the concrete composition structured flowchart of stacked data feeder apparatus in the system of the present invention;

Fig. 5 is the concrete composition structured flowchart of transmitting apparatus under the broadcasting in the system of the present invention;

Fig. 6 is for stacked data feeder apparatus in the system of the present invention and broadcast when transmitting apparatus places the digital television broadcasting server of network side simultaneously down the concrete composition structural representation of digital television broadcasting server;

Fig. 7 is the transfer of data schematic diagram between digital television broadcasting server in the system of the present invention and the interactive processing device;

Fig. 8 forms structural representation for first kind of typical case of system of the present invention;

Fig. 9 forms structural representation for second kind of typical case of system of the present invention;

Figure 10 in the system of the present invention with stacked data feeder apparatus, broadcasting when transmitting apparatus and interactive processing device place the digital television broadcasting server of network side simultaneously down, the concrete composition structural representation of digital television broadcasting server;

Figure 11 is the main realization principle flow chart that the present invention is based on the digital television broadcasting method of wireless transmission;

Figure 12 is the processing procedure schematic diagram that interactive link is initiated in the inventive method;

Figure 13 is the concrete processing procedure schematic diagram of interactive link in the inventive method;

Figure 14 is the processing procedure schematic diagram that interactive link finishes in the inventive method.

Embodiment

The design core of technical solution of the present invention provide a kind of in based on the digital TV broadcasting service of wireless transmission user and network side carry out the system and method for information interaction, this scheme participates in the interaction scenarios information of digital television broadcasting program and is sent to network side by cordless communication network (as the third generation or next generation mobile communication networking etc.) by using the wireless communication terminal with shooting sound-recording function to take the user in digital television broadcasting system, the interactive information that network side is sent the user is added in the in progress digital television broadcasting program, and then broadcast by the broadcast channel in wireless communication system or the wireless digital TV-set broadcast system and to issue, user terminal can be play the programme content that is mixed with participant's interactive picture after receiving the digital television broadcasting program that is superimposed with interactive information.The present invention program's application is current mobile digital TV broadcast system, as mobile TV system or the like.

Be explained in detail below in conjunction with main realization principle, embodiment and the corresponding beneficial effect that reaches thereof of each accompanying drawing the present invention program.

Please refer to Fig. 1, this figure is the total system frame structure schematic diagram that the present invention is based on the digital television broadcasting system of wireless transmission, whole system is formed and is comprised user side and network side, wherein carry out the mutual of information by wireless transmission channel as exchange channels between user side and the network side, and be mixed with the broadcasting that the user participates in the digital television broadcasting program data of data by wireless broadcast channel and issue.

Wherein user side mainly comprises wireless communication terminal 10, effect is that the interactive data stream that the user participates in digital television broadcasting program is sent to network side by wireless transmission channel, is used in addition to receive and the playing network side issues is superimposed with the digital television broadcasting program of the interactive data stream that the user participates in;

Wherein network side mainly comprises interactive processing device 20, and stacked data feeder apparatus 30 and broadcasting is transmitting apparatus 40 down, wherein:

Interactive processing device 20 is used for the interactive data stream that above-mentioned wireless communication terminal 10 is sent by wireless transmission channel is processed into the data format that can superpose with the digital television broadcasting program data flow that network side broadcasting issues;

Stacked data feeder apparatus 30 is used for the digital television broadcasting program data flow that interactive data flows and network side broadcasting issues after above-mentioned interactive processing device 20 processing is carried out the data overlap-add procedure;

Broadcasting is transmitting apparatus 40 down, is used for above-mentioned stacked data feeder apparatus 30 superimposed data streams are carried out being handed down to wireless communication terminal 10 by broadcast channel after coded modulation handles.

Wherein the wireless communication terminal 10 interactive data stream that the user can be participated in digital television broadcasting program is sent to network side by the transmission channel of mobile communication system, here this transmission channel can be defined as exchange channels, the main effect of this exchange channels is to be used for the interactive data that transmission user participates in digital television broadcasting program, and wherein concrete exchange channels can be the uplink and downlink dedicated channel that provides among GSM network, GPRS network or the 3G (Third Generation) Moblie network UMTS.From wireless communication terminal 10 to base station transmitter 50, be exactly the exchange channels that defines here again and then by Access Network, transmission network among Fig. 1 to the passage between the digital television broadcasting server.

And after transmitting apparatus 40 can carry out coded modulation with the data flow after stacked data feeder apparatus 30 overlap-add procedure under the above-mentioned broadcasting, the broadcast channel by mobile communication system was handed down to wireless communication terminal; After also the data flow after stacked data feeder apparatus 30 overlap-add procedure can being carried out coded modulation, the broadcast channel by the wireless digital broadcasting television network is handed down to wireless communication terminal.Promptly this broadcast channel can be the downlink broadcast passage in the DVB-H standard organized to set up of DVB, also can be the downlink broadcast passage in the multimedia broadcast-multicast service of formulating in the 3GPP standard (MBMS), or the downlink broadcast passage in the BroadCast MultiCast Service of formulating in the 3GPP2 standard (BCMCS).If adopt the DVB-H standard, then the broadcast channel here is exactly the transmission channel between DVB-H transmitter and the wireless communication terminal among Fig. 1, the digital television broadcasting program data flow, sends by DVB-H launching tower 50 and then with digital television broadcasting program data flow wireless communication terminal 10 after the IP transmission network arrives DVB-H launching tower 50 from the digital broadcast service device.If adopt MBMS or BCMCS standard among the 3G mobile network, then the broadcast channel here is exactly the down channel between wireless access network UTRAN/GERAN and the wireless communication terminal, the digital television broadcasting program data flow is flowed through after core net arrives base station 50 from the digital broadcast service device, is sent to wireless communication terminal 10 by mobile network's base station system.Wherein DVB-H launching tower and mobile network's base station can utilize same launching tower physically, also can adopt different launching towers respectively.

Please specifically with reference to Fig. 2, this figure is the concrete composition structured flowchart of wireless communication terminal in the system of the present invention, and it specifically comprises data acquisition unit 101, data transmission unit 102, Data Receiving unit 103 and playing programs unit 104, wherein the concrete effect of each component units is as follows:

Data acquisition unit 101 is used for when the user participates in digital television broadcasting program, and the multi-medium data of gathering user's environment of living in is with as interactive data stream, can be for the camera parts on the mobile phone terminal at present as data collecting unit 101 etc.;

Data transmission unit 102 is used for the interactive data stream that above-mentioned data acquisition unit 101 collects is carried out being sent to network side by wireless transmission channel after coded modulation handles;

Data Receiving unit 103 is used to receive that network side issues is superimposed with the digital television broadcasting program of the interactive data stream that the user participates in;

Playing programs unit 104, be used for that the digital television broadcasting program data flow that is superimposed with the interactive data stream that the user participates in that above-mentioned Data Receiving unit 103 receives is carried out playing to the user after demodulating and decoding is handled and watch, for example the user can watch the television image information that shows with the picture-in-picture form between the interactive sight of participating user and the digital television broadcasting program.

To sum up, the wireless communication terminal here can be an independently terminal equipment, this terminal equipment is except the ability to play that possesses basic digital television broadcasting content receiving ability, digital television broadcasting content, also has the audio/video information acquisition capacity, and can send data to the digital television broadcasting system side by wireless network, as mobile phone terminal with multimedia information acquisition parts commonly used at present or personal digital assistant terminal (PDA) etc.In addition, the wireless communication terminal here can also be the terminal equipment combination that possesses the digital television receiver of digital television broadcasting content receiving ability, digital television broadcasting content play ability and possess shooting, record and send data to by wireless network the digital television broadcasting system side, as the terminal equipment that makes up by digital television receiver and the mobile phone terminal that possesses above-mentioned corresponding function, wherein digital television receiver is used to play digital television broadcasting program, and mobile phone is used for and system side is carried out the interaction process of interactive data.

Wherein above-mentioned interactive processing device 20 is the core components in the system of the present invention, it is responsible for the initiation that the user participates in the interactive link of live show, the control of interactive process and the end of interactive link thereof, the effect of its maximum still is the video/audio data flow of uploading that the user participates in after the interaction is handled, so that the digital television broadcasting program data flow that the interaction data that stacked data feeder apparatus 30 can be uploaded user stream and broadcasting issue is carried out overlap-add procedure.

Please specifically with reference to Fig. 3, this figure is the concrete composition structured flowchart of interactive processing device in the system of the present invention, wherein mainly comprise interactive control unit 201 in the interactive processing device 20, data conversion treatment unit 202, data identification unit 203, first data buffer storage unit 204, participating user queued units 205 and display unit 206 intercom mutually by control bus between them.Interactive processing device 20 main responsible users participate in interactive whole process, and handle the interactive data stream that wireless communication terminal 10 is uploaded by the wireless interaction passage, will further describe the body of work flow process of interactive processing device 20 from the angle of each component units below:

Interactive control unit 201 is used for that the interactive link that the user can participate in digital television broadcasting program is begun message and termination messages is notified to the user, and whole interactive process is monitored; Also be used for simultaneously determining one group of Control Parameter that is used for interactive data stream is carried out conversion process according to the property parameters of the digital television broadcasting program data flow of network side broadcasting; Wherein should can realize the beginning message and the termination messages of interactive link are notified to the user by interaction control unit 201, also can realize the beginning message and the termination messages of interactive link are notified to the user by inserting captions message in the digital television broadcasting program data flow that issues in network side broadcasting by sending data-message to wireless communication terminal 10.

Wherein interactive control unit 201 is the most important components in the interactive processing device 20, the digital television broadcasting content needs of being responsible for providing according to digital television broadcasting content supplier carry out the initiation of interactive link, the control of interactive process and the termination of interactive link.Interactive control unit 201 can be selected to send the interactive note of inviting by exchange channels to certain (a bit) wireless communication terminal according to the needs of digital television broadcasting content; Interactive control unit 201 also can be selected to inform that by intercut the prompting captions in the digital television broadcasting content picture of playing the user can initiate interactive request.In specific implementation process, interactive control unit 201 can be preserved some rational interactive initiation modes in advance, if the interaction initiation mode that interactive control unit 201 is taked to send the invitation note to wireless communication terminal 10 is initiated interaction, then interactive control unit 201 can be waited for the affirmation information of invited user after sending the invitation note; If intercutting the captions mode in the digital television program of broadcasting, interactive control unit 201 employings point out the user to send interactive request to interactive processing device 20, then interactive control unit 201 can wait for that the user sends interactive request note to interactive processing device 20, with further selection participating user.

After interactive control unit 201 receives the interactive response confirmation that the user sends, interactive link can begin, after interactive link begins, interactive control unit 201 can obtain the property parameters of current in progress digital television broadcasting content audio and video data streams from the content server of digital television broadcasting server, and determine one group of Control Parameter of controlling the audio and video data streams that follow-up data conversion processing unit 202 analyzing and processing participating users send according to these property parameters, and the audio and video data streams of using this group Control Parameter to come 202 pairs of participating users of control data conversion processing unit to send is carried out analyzing and processing.

Participate in the more problem of participating user quantity meeting in the digital television broadcasting program of broadcasting at present if consider requirement, can and then in interactive processing device 20, comprise participating user queued units 205, be used for participating in the processing of ranking of interactive participating user to sending request according to predesignating strategy, above-mentioned interactive control unit 201 and then can select each participating user successively according to the queuing result of this participating user queued units 205, and send the beginning message of interactive link to the participating user of selecting, wherein this participating user queued units 205 can be come successively the processing of ranking of each participating user according to the priority orders of each participating user, also can send the sequencing that participates in interactive request message according to each participating user and come successively the processing of ranking of each participating user.

Be that participating user queued units 205 can be arranged the processing of ranking of all participating users, select a certain (a bit) participating user to wait for interactive control unit 201 based on certain selection strategy, and send interactive request to certain (a bit) participating user of this selection and pass through message, informing that this (a bit) participating user can begin interactive link, and wait for the participation confirmation of this (a bit) participating user.Wherein above-mentioned selection strategy can be to select participating user according to the priority orders of participating user, can be preferentially selected as the high priority participating user; Also can send the time order and function of asking to participate in message and select participating user in proper order according to participating user, the participating user that promptly sends a request message earlier is preferentially selected, wherein selection strategy can set in advance in interactive control unit 201, the selection strategy that is provided with on it can increase, and also can reduce.

For example, the work relationship between interactive control unit 201 and the participating user queued units 205 can be specific as follows:

User totem information of each interactive request user of storage in participating user queued units 205, and according to the processing of ranking of the request time sequencing of each participating user.Promptly when participating user is sent interaction participation request message, this request message is sent to interactive control unit 201 by control bus, in interactive control unit 201, the user ID of this participating user of unique identification is stored simultaneously, and rank according to the time order and function that sends a request message with other participating users, wherein user totem information can be the phone number of user terminal, or the user account information of the customized digital TV broadcasting service of this participating user.After interactive control unit 201 is chosen a participating user in the participating user formation, interactive control unit 201 sends a short message prompt by exchange channels to this selected participating user, informs that this participating user obtains to participate in interactive chance and require its affirmation to participate in the interaction.After this participating user confirmed to participate in interaction, this participating user terminal was sent to interactive control unit 201 with confirmation by exchange channels, after interactive control unit 201 receives the confirmation signal, determines that interaction formally begins.

When participating user withdraws from, interactive control unit 201 is determined interactive the end, after interactive control unit 201 detects participating user and withdraws from interaction, the user totem information of this participating user of storage sends corresponding signal simultaneously and notifies follow-up data conversion treatment unit 202 and stacked data feeder apparatus 30 to stop corresponding work of treatment in the deletion participating user queued units 205.

Data identification unit 203, be mainly used in and in the data that wireless communication terminal is sent by wireless transmission channel, identify the interactive data stream that the user participates in digital television broadcasting program, and the interactive data stream that identifies is sent to follow-up data conversion treatment unit 202 carry out conversion process.Because interactive processing device 20 is in the exchange channels, only need interactive processing device 20 to carry out transparent transmission for some interactive data streams that are not the user sends, carry out any processing and need not interactive processing device 20, therefore just need interactive processing device 20 to analyze to the upstream of flowing through, judge according to the user ID of uploading data flow whether the data flow of uploading is carrying out the data flow that mutual participating user is uploaded, if when learning that after data identification unit 203 analyzing and processing uploading data is interaction data stream, then further be transmitted to follow-up data conversion treatment unit 202 again, if learn that after data identification unit 203 analyzing and processing uploading data is other common upstreams, then 20 pairs in interactive processing device is uploaded data flow and is not carried out any processing, directly carries out transparent transmission.

First data buffer storage unit 204, be mainly used in the interactive data that wireless communication terminal is sent by wireless transmission channel and flow to the row cache processing, follow-up data conversion treatment unit 202 will extract its buffer memory successively from this first data buffer storage unit 204 interaction data stream carries out conversion process.Wherein follow-up data conversion treatment unit 202 will extract the interactive data stream of buffer memory and handle from this first data buffer storage unit 204, a part of interactive data stream is handled in data conversion treatment unit 202, first data buffer storage unit 204 will discharge the memory space of a part, the interactive data of buffer memory stream is brought in constant renewal in first data buffer storage unit 204, till mutual termination.Wherein being provided with of first data buffer storage unit 204 mainly is to change for fear of the message transmission rate that causes because of network transmission resource is unstable that stopping to appear in the picture of caused participating user or the situation of frame-skipping.Here need to prove: above-mentioned participating user queued units 205 and first data buffer storage unit 204 here can be in the different storage zone that is in the same memory physically.

Data conversion treatment unit 202 is mainly used in the interactive data stream translation of wireless communication terminal being sent by wireless transmission channel according to one group of definite Control Parameter of above-mentioned interactive control unit 201 and is processed into the data format that can superpose with the digital television broadcasting program data flow of network side broadcasting.Because the type difference of each wireless communication terminal, the resolution sizes of the interactive audio and video data streams of possible each wireless communication terminal sent, the frame per second of video and the color parameter that can support etc. may exist difference, the data format of requirement just is responsible for the audio frequency and video interactive data stream that participating user is sent is processed in data conversion treatment unit 202, sends follow-up stacked data feeder apparatus 30 then to and handles.Wherein data conversion treatment unit 202 will carry out corresponding conversion process according to the interaction data stream that the correlation parameters that interactive control unit 201 is sent is uploaded participating user.Promptly at first data conversion treatment unit 202 reads the interactive data stream of buffer memory from above-mentioned first data buffer storage unit 204, then to its reduction of decoding, the processing parameter of sending according to interactive control unit 201 is to the video pictures frame resolution sizes of the interactive data stream that extracts again, medium properties such as color carry out conversion process, the audio and video data streams of the digital television broadcasting content that the audio frequency and video interactive data stream after the processing will provide with the content server in the network side digital television broadcasting server has identical frame per second, so that follow-up stacked data feeder apparatus 30 can be by the existing program picture of a frame, one frame participates in video pictures and carries out overlap-add procedure, also will handle according to above-mentioned rule audio-frequency unit.Data conversion treatment unit 202 sends to follow-up data stack processing unit 30 with the audio frequency and video interactive data stream after the conversion process and carries out the data overlap-add procedure.

Also include display unit 206 in the interactive processing device 20 in addition, be used to show the user related information of each participating user.After participating user is sent interactive request message, participating in interactive user related information will be stored in the participating user queued units 205, this display unit 206 also can show the relevant information of participating user simultaneously, this display unit 206 is except the user totem information that shows interactive participating user, can also show the stand-by period information of participating user and the priority level of participating user, the information such as duration after the interactive beginning, need to prove that here the information that display unit 206 shows can expand and reduce flexibly.Wherein use display unit 206 to show that the main purpose of the relevant information of participating user is to assist the managerial staff member of digital television broadcasting server end better to control interactive process.

The communication port of each component units in the above-mentioned interactive processing device 20 is a control bus, interactive control unit 201 can be controlled the concrete work of other each component units in the interactive processing device 20 by this control bus, and by this control bus being connected on the path of digital television broadcasting server, thereby realize communicating, finish interactive control with the digital television broadcasting server.

Please specifically with reference to Fig. 4, this figure is the concrete composition structured flowchart of stacked data feeder apparatus in the system of the present invention, mainly comprises second data buffer storage unit 301 and data stack processing unit 302 in the stacked data feeder apparatus 30, and the main effect of each component units is as follows:

Second data buffer storage unit 301 is mainly used in the interactive data stream after the above-mentioned interactive processing device 20 of buffer memory is handled;

Data stack processing unit 302 is mainly used in the interactive data stream that extracts its buffer memory in above-mentioned second data buffer storage unit 301, and mixes overlap-add procedure with the digital television broadcasting program data flow that the network side content server provides.This data stack processing unit 302 is main to be responsible for the interactive data that the in progress digital TV contents of digital television broadcasting server and participating user transmit is flow to the line data overlap-add procedure.When the interactive data that does not have participating user to send flows, this working cell is in inactive state, when receiving the notification message that interaction that interactive control unit 301 sends is about to begin, the 302 startup work of data stack processing unit, preparation at any time receives the participating user interactive data stream after the processing of transmitting from interactive processing device 20.After the interactive beginning, data mixing overlap-add procedure process is about to begin, data stack processing unit 302 obtains image frame from progress digital television broadcasting content, from above-mentioned second data buffer storage unit 301, obtain the interactive audio frequency and video image frame of participating user simultaneously, then with two image frame mixing stacks.If digital television broadcasting program allows a plurality of participating users to participate in simultaneously, then data stack processing unit 302 superposes the participation image frame of a plurality of participating users and the digital television program image frame of broadcast together, and forms new image frame with the form of picture-in-picture.Here need to prove that the interactive picture of participating user is to be arranged in the less video frame to play.

Please specifically with reference to Fig. 5, this figure broadcasts the concrete composition structured flowchart of transmitting apparatus down in the system of the present invention, and broadcasting mainly includes coded modulation unit 401 and broadcast distribution unit 402 in the transmitting apparatus 40 down, and wherein the main effect of each component units is as follows:

Coded modulation unit 401 is mainly used in the data flow after above-mentioned stacked data feeder apparatus 30 overlap-add procedure is carried out the coded modulation processing; Promptly encode the interactive program content that perhaps is mixed with participating user audio frequency and video interactive data stream in the digital television broadcasting, send to following broadcast distribution unit 402 after compression and the modulation treatment thereof this coded modulation unit 401.

Broadcast distribution unit 402, the digital television broadcasting program that is superimposed with the interactive data stream that the user participates in that is mainly used in after above-mentioned coded modulation unit 401 handled is distributed to each broadcast transmitter, and the digital television broadcasting program that will be superimposed with the interactive data stream that the user participates in by each broadcast transmitter is handed down to each wireless communication terminal by broadcast channel again.

Transmitting apparatus 40 can place the digital television broadcasting server of network side simultaneously under wherein above-mentioned stacked data feeder apparatus 30 and the broadcasting, and interactive processing device 20 can place the peripheral miscellaneous equipment of digital television broadcasting server, as shown in Figure 6, when transmitting apparatus places the digital television broadcasting server of network side simultaneously for stacked data feeder apparatus in the system of the present invention with under broadcasting, the concrete composition structural representation of digital television broadcasting server, among Fig. 6 in the digital television broadcasting server 100 except comprising that above-mentioned stacked data feeder apparatus 30 and broadcasting are down the transmitting apparatus 40, also comprise content server 60, be used to provide the digital television broadcasting content; If the interactive data stream that does not have participating user to send, then the digital television broadcasting contents that transmitting apparatus 40 directly provides content server 60 under the broadcasting are carried out coded modulation and are issued processing.If the content of playing has interactive data stream, then after interaction begins, the audio frequency and video interactive data stream that digital television broadcasting audio and video data streams that stacked data feeder apparatus 30 will be provided content server 60 and participating user are sent mixes overlap-add procedure, broadcasts issuing then after the coded modulation through broadcasting down transmitting apparatus 40.

Digital television broadcasting server (Broadcast Server) 100 just can realize providing digital TV broadcasting service like this, and to the customer group broadcast digital TV program of customized digital TV broadcasting service.Simultaneously digital television broadcasting server 100 can also be when broadcast program and the user carry out interactive link, with the interaction that the user is participated in look, audio data stream and current in progress digital television broadcasting program data flow mix stack, and issue by broadcast channel.

Based on above-mentioned situation, please specifically with reference to Fig. 7, this figure is the transfer of data schematic diagram between digital television broadcasting server and the interactive processing device in the system of the present invention, and the interaction data between interactive processing device 20 and the digital television broadcasting server 100 mainly comprises the audio frequency and video interactive data stream of interactive control data and participating user.Wherein the data channel among Fig. 7 is logically separated, and physically can be that data shared transmits passage.

Place the digital television broadcasting server of network side simultaneously based on transmitting apparatus 40 under above-mentioned stacked data feeder apparatus 30 and the broadcasting, and interactive processing device 20 places the basis of the peripheral miscellaneous equipment of digital television broadcasting server, and it is as described below that two kinds of typical cases of system of the present invention form structure:

Please specifically with reference to Fig. 8, this figure is that first kind of typical case of system of the present invention forms structural representation, comprise digital television broadcasting server 100 in the system, have the smart mobile phone 200 of shooting, sound-recording function, interactive processing device 20 (as the autonomous device of network side).This kind networking mode mainly can be used for the mobile TV technology or mainly is digital TV Broadcasting Techniques at mobile communication terminal.This kind networking mode can be born based on MBMS in the 3-G (Generation Three mobile communication system) or BCMCS, also can be born by DVB-H; The Internet can be a mobile communications network; Wireless communication terminal can be the smart mobile phone with shooting and sound-recording function.

Please specifically with reference to Fig. 9, this figure is that second kind of typical case of system of the present invention forms structural representation, mainly comprise digital television broadcasting server 100 in the system, interactive processing device 20, digital television receiver 300 and can be by the intelligent mobile terminal that be connected to digital television broadcasting server 100 400 of mobile communications network as the Internet, this intelligent mobile terminal 400 possess shooting and sound-recording function.Its radio network can be existing mobile digital TV radio network, and the Internet can be a mobile communications network.

In addition, transmitting apparatus 40 and interactive processing device 20 also can place the digital television broadcasting server of network side simultaneously under above-mentioned stacked data feeder apparatus 30, the broadcasting, be interactive processing device 20 as a functional unit in the digital television broadcasting server 100, the processing procedure of other parts is with above-mentioned description.As shown in figure 10, in the system of the present invention with stacked data feeder apparatus, broadcasting when down transmitting apparatus and interactive processing device place the digital television broadcasting server of network side simultaneously, the concrete composition structural representation of digital television broadcasting server.

Accordingly, the invention allows for a kind of digital television broadcasting method based on wireless transmission, please refer to Figure 11, this figure is the main realization principle flow chart that the present invention is based on the digital television broadcasting method of wireless transmission, and its main implementation procedure is as follows:

The interactive data stream that step S10, user side will participate in the digital television broadcasting program of network side broadcasting is sent to network side by wireless transmission channel; Wherein before this, network side can realize notifying user side can participate in the digital television broadcasting program that network side broadcasting by send data-message to user side, perhaps realize notifying the user can participate in the digital television broadcasting program that network side broadcasting by in the digital television broadcasting program data flow of broadcasting, inserting captions message, after the user determine to participate in interaction, can send the medium interactive data stream of self environment of living in.

Here the wireless transmission channel of mentioning can but be not limited to transmission channel in the mobile communication system.

Step S20, network side is sent user side by wireless transmission channel interactive data stream are processed into the data format that can superpose with the digital television broadcasting program data flow that network side is being broadcasted; Wherein to carry out the detailed process of conversion process as follows for network side interactive data stream that user side is sent:

Network side at first determines that according to the property parameters of the digital television broadcasting program data flow of broadcasting one group of interactive data stream that is used for that user side is sent carries out the Control Parameter of conversion process;

Network side is sent user side according to above-mentioned this definite group Control Parameter by wireless transmission channel interactive data stream translation is processed into the data format that can superpose with the digital television broadcasting program data flow that network side is being broadcasted.

Step S30, network side interactive data stream and the network side after with above-mentioned conversion process broadcasted the digital television broadcasting program data flow that issues and carried out the data overlap-add procedure; Wherein network side can broadcasted the digital television broadcasting program data flow overlap-add procedure that issues with network side with the interactive data after conversion process stream and become the form of picture-in-picture to issue.

Step S40, the data flow of network side after with above-mentioned overlap-add procedure carried out after coded modulation handles, being issued to user side by broadcast channel plays, wherein network side can be issued to each base station transmitter with the superposition of data streaming after the coded modulation, by each base station transmitter superposition of data stream is sent to user side by the broadcast channel in the mobile communication system again and plays; Network side can also be issued to the superposition of data streaming after the coded modulation each digital television broadcasting transmitter, by each digital television broadcasting transmitter superposition of data stream is sent to user side by the broadcast channel in the wireless digital broadcasting television network again and plays.

The main implementation procedure that is the inventive method is: network side is in the process of playing digital television broadcasting program, the user may receive the interaction invitation that network side issues, and also may receive only the interactive information that network side inserts at the digital television broadcasting program of playing.The user then divides following two kinds of situations to participate in if participation is interactive:

A, user receive after interaction that network side issues invites, and the user directly sends acknowledge message by terminal equipment, confirm to participate in interactive, and network side just can begin interaction after receiving interactive acknowledge message;

B, user receive interactive prompting, the user sends request by terminal equipment and participates in interactive request message to network side, if the user is selected, then can receive one and can begin interactive prompting message, this message requires the user to confirm to participate in interaction, and the user can begin interactive link after confirming;

Interactive beginning, user's opening terminal apparatus look audio collecting device, terminal equipment is gathered audiovisual information, terminal equipment is uploaded to network side by the real-time audio/video information with collecting of exchange channels simultaneously.Network side sends to the digital television broadcasting server with the participating user video/audio data flow of handling, broadcast after the digital television broadcasting server mixes existing program and participating user audio and video data streams and issue, user terminal receives the broadcasted content that contains the participating user audio and video data streams, plays immediately.

Being applied in the invention described above system with the inventive method below is example, and the specific implementation process of each link in the inventive method implementation process is explained in detail.

Please refer to Figure 12, this figure is the processing procedure schematic diagram that interactive link is initiated in the inventive method, and the processing procedure that its interactive link is initiated is specific as follows:

S1, digital television broadcasting server issue the digital television broadcasting content by broadcast channel to wireless communication terminal broadcasting, and wireless communication terminal receives and play the digital television broadcasting content;

S2, the interactive control unit of digital television broadcasting server controls enter digital television broadcasting content interaction link;

S3, interactive control unit send to wireless communication terminal can participate in interactive prompting message, this prompting message can present in the program picture that broadcasting issues, and also can be directly to send in the radio communication terminal that possesses interaction capabilities with short message way;

S4, wireless communication terminal send to interactive control unit and participate in interactive request message, can be to send with short message mode;

The interaction that S5, interactive control unit receive wireless communication terminal sent participates in request message, in the participating user queued units, increase the relevant information of a participating user, interactive request message that participates in of every reception, increase a user related information, behind receivable maximum participating user number, stop to receive request message;

S6, interactive control unit select one or more participating user requestors based on prior formulation and the selection strategy that is stored in the interactive control unit;

S7, interactive control unit send the notification message of " requesting for permission " to the participating user of choosing, and wait for the affirmation message of beaming back after the participating user response;

S8, interactive control unit also can directly send interactive invitation message to specific user, and the wireless communication terminal that can possess interaction capabilities as interactive control unit at random to certain or some sends the invitation note, and wait for user's response;

S9, wireless communication terminal send to interactive control unit and participate in interactive affirmation message;

S10, interactive control unit receive the interactive acknowledge message of wireless communication terminal sent, interactive control unit sends interaction to the data conversion treatment unit and is about to begin message, and the data conversion treatment unit enters the state of preparing to handle interaction data after receiving message;

S11, simultaneously, after interactive control unit receives the interactive acknowledge message of wireless communication terminal sent, send interaction to the digital television broadcasting server and be about to begin message, the digital television broadcasting server receives the digital television broadcasting data stream that interactive data flows and broadcasting issues that enters participating user after the message and mixes the state of overlap-add procedure.

Please specifically with reference to Figure 13, this figure is the concrete processing procedure schematic diagram of interactive link in the inventive method, and the processing procedure of its interactive link is specific as follows:

S10, interactive control unit obtain the current digital television broadcasting content stream data that issues of broadcasting after data conversion treatment unit and digital television broadcasting server have sent the interactive message that is about to begin in the content server of interactive control unit from the digital television broadcasting server;

S20, interactive control unit produce one group of relevant Control Parameter according to the property parameters that the digital television broadcasting content stream data of above-mentioned acquisition has, the interactive audio and video data streams that these Control Parameter can the control data conversion processing unit be uploaded participating user is carried out Data Format Transform and is handled, to mix stack with the current digital television broadcasting content stream data that issues of broadcasting;

S30, interactive control unit send to the data conversion treatment unit with above-mentioned definite Control Parameter;

S40, wireless communication terminal obtain the user and participate in interactive audio/video information, and the audio/video information that obtains is uploaded to data identification unit by the wireless interaction passage in real time;

After S50, data identification unit receive the data that wireless communication terminal uploads, judge in conjunction with the user totem information of storing in the participating user queued units whether the data that the user uploads are to carry out the data that mutual user uploads, if carry out following S60; Otherwise carry out following S70;

The data forwarding that S60, data identification unit are uploaded the user handles for the data conversion treatment unit;

If it is common data that the S70 data identification unit identifies upstream data, then data identification unit directly will be uploaded data penetration transmission and give the digital television broadcasting server;

S80, if data identification unit is judged the interactive audio and video data streams that upstream data is interactive link, then earlier interactive audio and video data streams is stored in first data buffer storage unit of data conversion treatment cell side, the data conversion treatment unit is when handling interactive audio and video data streams, directly from first data buffer storage unit, extract interactive audio and video data streams and carry out the Data Format Transform processing, handle a part of memory space in part release first data buffer storage unit, the interactive data of first data buffer storage unit storage is brought in constant renewal in, till mutual termination (wherein the schematic diagram that interactive data stream is stored in first data buffer storage unit does not draw in Figure 13);

The data conversion treatment unit reads out interactive data and is processed into the data format that Control Parameter that interactive control unit sends requires from first data buffer storage unit, send to the stacked data feeder apparatus in the digital television broadcasting server then.At first the data conversion treatment unit reads interactive data from first data buffer storage unit, the Control Parameter of sending according to interactive control unit is adjusted the resolution sizes of video pictures frame to the interactive data that reads again, adjust the processing of medium properties such as color, interactive data stream after it is handled will have identical frame per second with the digital television broadcasting content stream data that provides in the content server in the digital television broadcasting server, so that the stacked data feeder apparatus can carry out overlap-add procedure by the existing program picture one frame participant video pictures of a frame.

S90, digital television broadcasting server receive from behind the interactive data of the data conversion treatment unit stream, it is left in second data buffer storage unit, mixed process begins, data stack processing unit is obtained image frame from progress digital television broadcasting content, from second data buffer storage unit, obtain the interactive picture frame of participating user, then two image frames are superposeed.If interactive program allows a plurality of participants to participate in interaction simultaneously, then data stack processing unit superposes several participants' participation picture and in progress program picture together, and forms new image frame with the picture-in-picture form.Mixed video pictures frame is sent to broadcasting transmitting apparatus down continuously together with sound accompaniment;

After transmitting apparatus receives the audio, video data that transmits under S100, the broadcasting, carry out encoding compression, after modulation, send to the broadcast distribution unit, the content that the broadcast distribution unit will be mixed with interactive participant's audio/video information is broadcasted and is issued, after wireless communication terminal receives broadcasted content, play the broadcast TV program of certain (a bit) the participating user interactive picture that has sound accompaniment with the picture-in-picture form.

Please specifically with reference to Figure 14, this figure is the processing procedure schematic diagram that interactive link finishes in the inventive method, and the processing procedure that its interactive link finishes is specific as follows:

S200, interactive control unit detect participating user and withdraw from interaction, or interactive control unit active termination participating user is proceeded interaction process;

Stopped the relevant user information of mutual participating user in S210, the interactive control unit deletion participating user queued units;

S220, interactive control unit send interactive end to the data conversion treatment unit, and the notification data conversion processing unit stops the work of treatment of interactive data;

S230, data conversion treatment unit stop interactive data being dealt with the work;

S240, the interactive control unit stacked data feeder apparatus in the digital television broadcasting server sends interactive end, and the notification data stacking apparatus stops the overlap-add procedure work to interactive data;

S250, stacked data feeder apparatus stop interactive data being carried out overlap-add procedure work;

S260, digital television broadcasting server continue to play the ordinary numbers television broadcasting content of the interactive picture that do not superpose.

Below in conjunction with the instant embodiment that interviews the specific implementation process of the inventive method is described in detail:

1, supposes the digital television broadcasting server end one grade of talk class program of broadcasting live, carrying out along with program, the host sends invitation to the spectators that watch program, expression wishes that spectators participate in the program express an opinion (user that the user refers to hold wireless communication terminal), and an interactive request access way is provided, as a network address or a number of short message etc.;

2, the staff starts the interactive processing device;

3, the interactive processing device is in state of activation, prepares to accept interactive participant's request at any time;

3, watch the spectators of this program to send interactive request to the interactive processing device by smart mobile phone for one by the wireless interaction passage with shooting sound-recording function;

4, the interactive processing device is preserved requestor's identification information in participant's formation;

5, the interactive processing device sends the sequencing of request according to the participant, selects to send the earliest a user of request, and sends a notification message and tell this user can begin interaction, and requires its affirmation;

6, this user request of receiving is confirmed that participation is interactive, and is opened the shooting recording device by notice;

7, after the interactive processing device receives user's affirmation message, the work of log-on data conversion process;

8, the user begins to take, record, and uploads the audio and video data streams of oneself answering the interview problem immediately;

9, the interactive processing device receives and handles the audio and video data streams of uploading by the requirement of interactive control unit, sends to the stacked data feeder apparatus in the digital television broadcasting server after disposing;

10, the stacked data feeder apparatus mixes picture and the voice that current program picture and participant answer a question, and sends broadcasting time transmitting apparatus to while mixing;

11, broadcasting down transmitting apparatus the digital television broadcasting program of the video/audio data flow that is mixed with the participant and answers a question is carried out encoding compression, and modulation broadcasts issuing then;

12, all are watching that the spectators of this program can both see the interview picture that presents with the picture-in-picture form in the program picture;

13, spectators answer the interview problem that finishes, and withdraw from interaction, and each unit of other in the interactive control unit coordination and interaction processing unit finishes interactive processing work.

Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.

Claims

1, a kind of digital television broadcasting system based on wireless transmission comprises user side and network side, it is characterized in that, described user side comprises:

Described network side comprises:

2, the system as claimed in claim 1 is characterized in that, described wireless communication terminal specifically comprises:

3, system as claimed in claim 1 or 2 is characterized in that, described wireless communication terminal is:

Mobile phone terminal with multimedia information acquisition parts; Or

4, the system as claimed in claim 1 is characterized in that, described interactive processing device specifically comprises:

5, system as claimed in claim 4 is characterized in that, described interactive control unit is notified to the user by send data-message to wireless communication terminal with the beginning message and the termination messages of interactive link.

6, system as claimed in claim 4 is characterized in that, described interactive control unit is notified to the user by insert captions message in the digital television broadcasting program data flow that network side broadcasting issues with the beginning message and the termination messages of interactive link.

7, system as claimed in claim 4, it is characterized in that, described interactive processing device also comprises data identification unit, be used for identifying the interactive data stream that the user participates in digital television broadcasting program, and send to described data conversion treatment unit and carry out conversion process in the data that wireless communication terminal is sent by wireless transmission channel.

8, system as claimed in claim 4, it is characterized in that, described interactive processing device also comprises first data buffer storage unit, be used for that the interactive data that wireless communication terminal is sent by wireless transmission channel is flow to row cache and handle, described data conversion treatment unit extracts interaction data stream and carries out conversion process from described first data buffer storage unit.

9, system as claimed in claim 4, it is characterized in that, described interactive processing device also comprises the participating user queued units, be used for according to the rules strategy and participate in the processing of ranking of interactive participating user sending request, described interactive control unit is selected each participating user successively according to the queuing result of described participating user queued units, and sends the beginning message of interactive link to the participating user of selecting.

10, system as claimed in claim 9 is characterized in that, described participating user queued units according to the priority orders of each participating user successively to the processing of ranking of each participating user.

11, system as claimed in claim 9 is characterized in that, described participating user queued units according to each participating user send participate in interactive request message sequencing successively to the processing of ranking of each participating user.

12, system as claimed in claim 4 is characterized in that, described interactive processing device also comprises display unit, is used to show the user related information of each participating user.

13, the system as claimed in claim 1 is characterized in that, described stacked data feeder apparatus specifically comprises:

14, the system as claimed in claim 1 is characterized in that, transmitting apparatus specifically comprises under the described broadcasting:

15, the system as claimed in claim 1 is characterized in that, transmitting apparatus places the digital television broadcasting server of network side simultaneously under described interactive processing device, stacked data feeder apparatus and the broadcasting.

16, the system as claimed in claim 1, it is characterized in that, transmitting apparatus places the digital television broadcasting server of network side simultaneously under described stacked data feeder apparatus and the broadcasting, and described interactive processing device places the peripheral miscellaneous equipment of digital television broadcasting server.

17, system as claimed in claim 1 or 2 is characterized in that, the interactive data stream that described wireless communication terminal participates in the user digital television broadcasting program is sent to network side by the transmission channel of mobile communication system.

As claim 1 or 14 described systems, it is characterized in that 18, after the data flow of transmitting apparatus after with described stacked data feeder apparatus overlap-add procedure carried out coded modulation under the described broadcasting, the broadcast channel by mobile communication system was handed down to wireless communication terminal.

19, as claim 1 or 14 described systems, it is characterized in that, after the data flow of transmitting apparatus after with described stacked data feeder apparatus overlap-add procedure carried out coded modulation under the described broadcasting, the broadcast channel by the wireless digital broadcasting television network was handed down to wireless communication terminal.

20, a kind of digital television broadcasting method based on wireless transmission is characterized in that, comprises step:

21, method as claimed in claim 20 is characterized in that, comprises that also network side notifies user side can participate in the digital television broadcasting program that network side broadcasting by send data-message to user side.

22, method as claimed in claim 20 is characterized in that, comprises that also network side inserts captions message and notifies the user can participate in the digital television broadcasting program that network side broadcasting in the digital television broadcasting program data flow of broadcasting.

23, method as claimed in claim 20 is characterized in that, described wireless transmission channel is the transmission channel in the mobile communication system.

24, method as claimed in claim 20 is characterized in that, the process that the interactive data stream that described network side is sent user side is handled specifically comprises:

25, method as claimed in claim 20 is characterized in that, the interactive data stream after network side will be handled becomes the form of picture-in-picture with the digital television broadcasting program data flow overlap-add procedure of network side broadcasting.

26, method as claimed in claim 20 is characterized in that, the superposition of data streaming of network side after with coded modulation is issued to each base station transmitter;

By described each base station transmitter superposition of data stream being sent to user side by the broadcast channel in the mobile communication system plays.

27, method as claimed in claim 20 is characterized in that, the superposition of data streaming of network side after with coded modulation is issued to each digital television broadcasting transmitter;

By described each digital television broadcasting transmitter superposition of data stream being sent to user side by the broadcast channel in the wireless digital broadcasting television network plays.