CN105635841A - Interaction broadcast control method and system - Google Patents
Interaction broadcast control method and system Download PDFInfo
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- CN105635841A CN105635841A CN201511001187.8A CN201511001187A CN105635841A CN 105635841 A CN105635841 A CN 105635841A CN 201511001187 A CN201511001187 A CN 201511001187A CN 105635841 A CN105635841 A CN 105635841A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/47—End-user applications
- H04N21/475—End-user interface for inputting end-user data, e.g. personal identification number [PIN], preference data
- H04N21/4756—End-user interface for inputting end-user data, e.g. personal identification number [PIN], preference data for rating content, e.g. scoring a recommended movie
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/233—Processing of audio elementary streams
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/47—End-user applications
- H04N21/475—End-user interface for inputting end-user data, e.g. personal identification number [PIN], preference data
- H04N21/4758—End-user interface for inputting end-user data, e.g. personal identification number [PIN], preference data for providing answers, e.g. voting
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/47—End-user applications
- H04N21/478—Supplemental services, e.g. displaying phone caller identification, shopping application
- H04N21/4788—Supplemental services, e.g. displaying phone caller identification, shopping application communicating with other users, e.g. chatting
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
- H04N21/83—Generation or processing of protective or descriptive data associated with content; Content structuring
- H04N21/835—Generation of protective data, e.g. certificates
- H04N21/8358—Generation of protective data, e.g. certificates involving watermark
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Human Computer Interaction (AREA)
- Computer Security & Cryptography (AREA)
- General Engineering & Computer Science (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
The invention discloses an interaction broadcast control method and system. The method includes the steps of: embedding audio frequency watermarks at intervals in a process that a center terminal performs audio frequency coding on a program; in the program broadcast process, identifying and extracting the audio frequency watermarks in the program through an interaction event by a terminal, and generating interaction information; sending the interaction information with the audio frequency watermarks to the center terminal by the terminal; extracting the audio frequency watermarks in the interaction information by the center terminal, and identifying a current interaction event of the terminal through comparison of the audio frequency watermarks. The system includes the center terminal and the terminal. The center terminal includes a watermark generation module for adding the audio frequency watermarks and an explanation module for comparing the audio frequency watermarks and identifying the current interaction event of the terminal. The terminal includes an identification module for identifying and extracting the audio frequency watermarks through the interaction event and generating the interaction information. According to the invention, the interaction event is accurately identified, the calculation amount is reduced, and the anti-interference capacity is improved.
Description
Technical field
The present invention relates to broadcast television and broadcast technical field, specifically, it relates to a kind of control method that interaction is broadcasted and system.
Background technology
About the broadcast of Television programme, in the development process of technology, broadcast from conventional broadcast, the broadcast that multiple broadcast mode till now combines, briefly introduce as follows:
Broadcast is broadcasted: at present, general television station is all by the mode such as satellite, cable tv network system, and the terminal that program is broadcast to each family is broadcasted.
New medium broadcasts: namely by new medium modes such as iptv, Web TV, mobile TVs, by the broadcast content of television station, be pushed to terminal by network or mobile network. Compared with broadcast broadcast mode, new medium broadcasts the ways of presentation not only increasing broadcast, too increases the covering of broadcast content.
Cloud broadcasts: in conjunction with cloud technology such as cloud computing, cloud storages, broadcast content is uploaded to high in the clouds broadcast, it is basically identical that broadcast mode and new medium broadcast mode, and just new medium broadcasts mode is complete in the mechanisms such as television station mostly, and computer application is also unit or local area network. Cloud broadcasts then better utilised cloud service, it is to increase performance and handiness, has saved resource.
Various broadcast mode above is substantially all unidirectional broadcast, namely the making side of Television programme by program to user's active push, but lack the interaction with user. Comparing other interactive services of some on internet, suffered impact is bigger.
In order to improve user's viscosity, a lot of television station have employed the mode of interactive broadcast, namely increases the interaction with spectators in a program which. Such as some variety shows note ballot, micro-letter shake wait serve.
Service is shaken about micro-letter, its principle is, user is in the process shaking terminal (such as mobile phone), terminal is recorded in the audio content broadcasting program, then recording there is the audio file transmissions of programme content to broadcast center, receive by the backstage at the center of broadcast, broadcast the audio frequency characteristics value of the audio file that center extraction receives, the eigenwert of described audio frequency characteristics value and central store is compared, and then identify the program that user is watching, and then carry out follow-up interaction, such as prize drawing, interaction, red packet etc. Owing to all can there be some programs in satellite TV general at present by the service of shaking and user interaction, such as variety show, TV play etc., thus, multiple (such as 0 to 10) Television programme may be had at one time in section and broadcast mode at this kind of application, so, broadcast center to be preserved the audio frequency characteristics of each program, carries out audio frequency comparison to identify which program user is participating in order to provide.
Although aforesaid broadcast mode provides the interaction that program broadcasts, but still haves much room for improvement part, such as:
Time lag. The time point of the audio frequency characteristics value of the recording file that user sends, the time point arriving broadcast center with audio file is all uncertain, so when broadcast center carries out eigenwert comparison, it is necessary to a sliding time window, the program audio of for some time near comparison. Thus substantially increase the workload of contrast conting, reduce accuracy rate. In at present this kind of number of applications, limited (program that tv stations currently broadcast has this to apply is few, the general same period is within 10), when participant is limited, drawback manifests and not obvious, if but a lot of program all applies this kind of broadcast mode, participant's quantity also increases greatly, then the calculating pressure broadcasting center can increase greatly, causes the interaction that cannot respond each user. Thus lose the real meaning of interactive broadcast.
Calculated amount is big. Above-mentioned interactive broadcast mode adopts audio frequency characteristics value comparison, it is necessary to being extracted by audio frequency characteristics, calculated amount is bigger comparatively speaking.
By noise jamming. When user uses terminal studio program, if there being people to speak, or the existence of other noise, can there is noise in the audio file of recording, then audio frequency characteristics value may be caused to change, thus cannot matching identification.
Summary of the invention
For solving deficiency of the prior art, the present invention provides control method and the system that a kind of interaction is broadcasted, and for, in the interactive process of broadcast items, accurately identifying interactive event, the calculated amount of reduction process, submits anti-interference ability to.
For solving the problems of the technologies described above, according to an aspect of the present invention, the present invention provides a kind of control method that interaction is broadcasted, and wherein, comprises the following steps:
Carrying out in the process of audio frequency coding in center-side to program, ground, interval embeds audio frequency watermark;
In described program broadcast process, described terminal is by interactive event identification and extracts the audio frequency watermark in described program, and generates interactive information;
Described terminal is sent to described center-side by with the interactive information of audio frequency watermark;
Described center-side extracts the audio frequency watermark in interactive information, by comparison audio frequency watermark, identifies the current interactive event of described terminal;
Operate accordingly according to described current interactive event.
Preferably, described audio frequency watermark is anti-interference type audio frequency watermark.
Preferably, in the control method of described interactive broadcast, described audio frequency watermark is multi-bit word symbol string, comprises program ID flag and interactive event flag.
Preferably, in the control method of described interactive broadcast, described audio frequency watermark also comprises multiple value bit, carries out in the process of audio frequency coding in center-side to program, and when adding audio frequency watermark to interval, audio frequency watermark value adds 1 in order.
Preferably, in the control method of described interactive broadcast, carrying out in the process of audio frequency coding in center-side to program, when adding audio frequency watermark to interval, the audio frequency watermark with identical audio frequency watermark value is multiple and adjacent.
Preferably, in the control method of described interactive broadcast, described terminal is by interactive event identification and extracts the audio frequency watermark in described program, and when generating interactive information, add up the audio frequency watermark number identified, and length is as a part for interactive information when audio frequency watermark number being converted to, or calculating the watermark value of last reception and the difference of first watermark value received, when described difference being converted to, length is as a part for interactive information.
Preferably, in the control method of described interactive broadcast, described center-side extracts the audio frequency watermark in interactive information, by comparison audio frequency watermark, comprises when identifying the current interactive event of described terminal: the time long message in described interactive information is converted to a point value information.
According to another aspect of the present invention, the present invention provides the Controlling System that a kind of interaction is broadcasted, and comprises center-side and terminal, wherein,
Center-side comprises watermark generation module, for, in the process that program carries out audio frequency coding, adding audio frequency watermark to interval; With explanation module, for the audio frequency watermark extracted in interactive information that terminal beams back, by comparison audio frequency watermark, identify the current interactive event of described terminal;
Described terminal comprises identification module, for by interactive event identification and extract described audio frequency watermark, generate interactive information and also send it to center-side.
Preferably, in the Controlling System of described interactive broadcast, described explanation module comprises information comparison list, for recording in audio frequency watermark and interactive event the corresponding relation of the particular content for interaction.
Preferably, in the Controlling System of described interactive broadcast, holding one of local function module centered by described watermark generation module, described explanation module is one of high in the clouds function module, and described explanation module is by network and described terminal, local function module and high in the clouds function module communication.
Compared with traditional audio frequency characteristics comparison, the present invention adopts audio watermark information to have following advantage:
1. do not affect by time lag. Owing to being the watermark information extracted in audio frequency, as long as so in the time period having watermark information, can extract watermark, the value of watermark is also fixing, can't be affected because of time lag.
2. calculated amount is relatively little. Watermarking algorithm is fixing algorithm, and compared with characteristics extraction, relative calculated amount is little.
3. little by noise jamming. Noise adds information in other frequency range, but is not almost affected by watermark information, also can not change the value of watermark. And the audio frequency characteristics value of superposition noise may change.
4. when watermark adopts 32 character strings, more flexibly and easily. Other specific meaning can be construed to, and character string itself can also transmit information. And audio frequency characteristics value is except audio frequency characteristics, any implication can not be represented.
Accompanying drawing explanation
By referring to accompanying drawing to the description of the embodiment of the present invention, above-mentioned and other objects, the feature and advantage of the present invention will be more clear, in the accompanying drawings:
Fig. 1 is the functional block diagram of the Controlling System that interaction of the present invention is broadcasted;
Fig. 2 is the schema of the control method that interaction of the present invention is broadcasted;
Fig. 3 is the functional block diagram of a specific embodiment of the Controlling System that interaction of the present invention is broadcasted;
Fig. 4 is interactive control schema in control embodiment of the method one of the present invention;
Fig. 5 is interactive control schema in control embodiment of the method two of the present invention.
Embodiment
As shown in Figure 1, being the functional block diagram of the Controlling System that interaction of the present invention is broadcasted, Fig. 2 is the schema of the control method that interaction of the present invention is broadcasted. Composition graphs 1 and Fig. 2, be described in detail the present invention.
Controlling System of the present invention comprises two parts, and end 1 centered by a part, a part is terminal 2. Center-side 1 comprises watermark generation module 11 and explains module 12. Usual program completes in center-side, in the process that program carries out audio frequency coding, adds audio frequency watermark by watermark generation module 11 interval. Watermark generation module 11 by audio watermarking algorithm, by digital watermark embedding in audio file (such as wav, mp3, avi etc.). By at people's ear (in general, the sound frequency that people's ear can identify is at 20 20000 hertz) frequency that can not identify, increase the mode of the marking, both original tonequality of audio file can not be caused too big impact, and also not affect spectators to the auditory perception of program. When generating audio frequency watermark, having the content of particular meaning in the corresponding system of often kind of audio watermark information, thus, center-side preserves an information comparison list, for recording in audio frequency watermark and interactive event the corresponding relation of the particular content for interaction. The content of the corresponding specific meanings of each audio frequency watermark, a such as link, one section of information etc. In addition, this information comparison list can also comprise audio frequency watermark and the corresponding relation of program ID, in order to identify the program corresponding with described audio frequency watermark. In order to ensure that terminal can receive and identify described audio frequency watermark, in audio encoding process, add described audio frequency watermark at interval of certain time (very short time, depending on particular case).
Terminal 2 includes and identifies module 21, by interactive event identification and extract the audio frequency watermark in program, and generate interactive information, the interactive information including audio frequency watermark be sent to described center-side 1. The explanation module 12 of center-side 2 extracts the audio frequency watermark in the interactive information that terminal 2 beams back, and by comparison audio frequency watermark, identifies the program corresponding with it and current interactive event. Concrete step is as follows:
Step S1, carries out adding audio frequency watermark to interval in the process of audio frequency coding to program in center-side;
Step S2, is transparent to terminal by audio frequency watermark, namely when described program broadcasts, still includes audio frequency watermark in program audio stream, can not dropped audio watermark in program transmission process;
Step S3, in the broadcast process of program, described terminal is by interactive event identification and extracts the audio frequency watermark in described program, and generates interactive information;
Step S4, described terminal is sent to described center-side by with the interactive information of audio frequency watermark;
Step S5, described center-side extracts the audio frequency watermark in interactive information, by comparison audio frequency watermark, identifies the current interactive event of described terminal;
Step S6, operates accordingly according to interactive event.
Wherein, center-side 1 is program making and the broadcasting centre of television station, and it can comprise multiple local function module and multiple high in the clouds function module, as shown in Figure 3. Wherein, watermark generation module 11 is one of multiple local function module 13, explains that module 12 can be one of multiple high in the clouds function module 14. Watermark generation module 11 is positioned at television station this locality, when program making, editor for embedding audio frequency watermark when audio frequency encodes in audio frequency stream. Audio frequency watermark broadcasts together along with program, and the broadcast of program can be local broadcast, or high in the clouds is broadcasted, and namely module for broadcasting can be local function module can also be high in the clouds function module.
Owing to may have encoding and decoding again in the middle-chain broadcasted, or the operation such as digital-to-analog conversion, information likely can be lost. For ensureing can not to lose in these process sound intermediate frequency watermarks, can processing from two aspects, one is adopt anti-interference watermark technology, and two is guarantee to adopt correct operation in transmitting procedure, such that it is able to ensure to abandon watermark, make audio frequency watermark can be transparent to terminal. Wherein, described anti-interference watermark technology is prior art, is not repeated.
Terminal 1 is started by a certain specific interactive event extracts audio frequency watermark function. The watermark information that will extract, uploads to the explanation module 12 being positioned at high in the clouds by network. Can there is high in the clouds or this locality in aforesaid information comparison list, after explaining that module 12 receives the interactive information that terminal sends, extract audio frequency watermark, then call described information comparison list to compare, identify program corresponding to described audio frequency watermark and particular content with this, namely identify this interactive event. Then corresponding according to audio frequency watermark particular content operates accordingly, as notified, other corresponding high in the clouds function modules push corresponding content to terminal, or feed back to television station center, make corresponding response by television station center, complete the interaction of broadcast items with this.
As shown in Figure 4, it is control schema interactive in control embodiment of the method one of the present invention. Described embodiment is in variety show, the application of host or welcome guest's dress advertisements. First it is program making. In program making process, comprising the recording of program, later stage compilation, such as audio frequency coding, now add audio frequency watermark to interval in audio frequency stream, such as one 32 character strings, it comprises program ID flag and interactive event flag. Also comprise other making processes, due to itself and prior art not difference, thus do not repeat to describe at this. After program making completes, listing or broadcasting list according to television station broadcast within the specific time. In the process that program is play, provide prompting in some way, such as captions mode, or the mode such as advertisement of insertion in the middle of program, inform that user uses " shaking " function or long by certain button in terminal of the application program in terminal, it is possible to obtain the purchase website of host's clothes. When terminal user is according to prompting, start terminal APP shake function or long by certain button time, terminal records a section audio, and therefrom identifies, extracts described audio frequency watermark, generates interactive information, is sent to high in the clouds. Described interactive information comprises terminal identity identifier, audio watermark information and other information. Interactive information described in the reception of high in the clouds, and therefrom extract the identify label of audio frequency watermark and terminal. By explaining that module carries out the comparison of audio frequency watermark according to information comparison list, so that it is determined that corresponding with described audio frequency watermark link, this is on-line shop or the advertisement of a sale host or welcome guest's clothes. The page of described on-line shop or advertisement is sent to terminal by the corresponding function module in high in the clouds, and terminal receives and shows described content of pages.
In the above-described embodiments, described audio frequency watermark is an information with immobilized substance, but the audio frequency watermark added when program audio encodes in the present invention can also be the information with changing content. The schema of embodiment two as shown in Figure 5.
In this embodiment, in variety show, please spectators be player's marking. In the playing process of program, spectators are according to the prompting provided, it may also be useful to the shaking of mobile terminal APP (or other can send the method for startup information, certain key is pressed as long) function, dri er or marking can be given, and according to action time length length, change score value. For realizing this purpose, the mode embedding audio frequency watermark in the audio frequency of program has two kinds, and a kind of is embed different watermarks in audio frequency stream with fixed time interval, long when being obtained by the number of the watermark obtained. Such as watermark information is set to 32 character strings, can consider to identify program by first 8 of 32 character strings as program ID flag, ensuing 8 as interactive event flag, rear 16 as value bit, and the content of audio frequency watermark is changed every some amount or time, such as every 10 audio frequency watermarks, thereafter 16 corresponding numerical value add 1, as after front 10 audio frequency watermarks, 16 corresponding numerical value are 1, after ensuing 10 audio frequency watermarks, 16 corresponding numerical value are 2, after ensuing 10 audio frequency watermarks, 16 corresponding numerical value are 3 again, analogize with this. Owing to the timed interval of every two audio frequency watermarks is fixing, thus after terminal receives and identifies out watermark, the number of statistics watermark information, then it is multiplied by when just can obtain interval time long. But because the sensitivity level of different terminal equipment, arithmetic speed are not identical, so the speed obtaining watermark information is different, terminating unit likely can not detect out each watermark information accurately, thus cannot the number of accurate geo-statistic watermark. But when every at regular intervals or certain watermark number and when changing watermark information, terminal can the number of different watermarks by obtaining, when judging, length is just relatively accurately. In the above example, terminal is when function is shaken in use, shake in theory and once should be able to identify such as 20 audio frequency watermarks, but sensitivity level, the computing velocity due to self, 20 watermark informations may not be identified completely, what may have identifies 10, and what have can identify 6, long when so just can not accurately calculate. But all devices can be accomplished at least can identify more than 1 in every 10 watermark informations. So, in the watermark identified, it is possible to count the number of the watermark of different values. Owing to the timed interval of the watermark of different value is fixing, owing to the number of the watermark of different value can be determined, long when thus can determine relatively accurately.
Another kind of mode is when embedding audio frequency watermark, watermark information is set to 32 character strings, such as, can consider to identify program by first 8 of 32 character strings as program ID flag, ensuing 8 as interactive event flag, latter 16 add 1 at regular intervals as value bit, the judgement of length when the numerical value represented by value bit is realized. When program making, embed watermark at the same time, and the watermark value of every adjacent watermark adds 1. Owing to the interval time of every two watermarks is constant, after terminal recognition goes out multiple watermark information, subtract first watermark value by last watermark value, then it is multiplied by when just can draw interval time long. After the interactive information of length when comprising this, watermark information is sent to high in the clouds by terminal, after high in the clouds receives and identifies out watermark information, know corresponding program by comparison, and by time length be converted to corresponding score value by the time length ratio example of correspondence. Other function modules that more described score value is sent to center-side, such as the control device of center-side this locality, the score value display unit at its control program scene, thus in real time or at the end of program, obtain or show the mark that spectators get.
According to embodiments of the invention as described above, these embodiments details that detailed descriptionthe is not all, does not limit the specific embodiment that this invention is only described yet. Obviously, according to above description, can make many modifications and variations. This specification sheets is chosen and is specifically described these embodiments, is the principle in order to explain the present invention better and practical application, thus makes art technician that the present invention and the amendment on basis of the present invention can be utilized well to use. Protection scope of the present invention should be as the criterion with the scope that the claims in the present invention define.
Claims (10)
1. the interactive control method broadcasted, wherein, comprises the following steps:
Carrying out in the process of audio frequency coding in center-side to program, ground, interval embeds audio frequency watermark;
In described program broadcast process, described terminal is by interactive event identification and extracts the audio frequency watermark in described program, generates interactive information;
Described terminal is sent to described center-side by with the interactive information of audio frequency watermark;
Described center-side extracts the audio frequency watermark in interactive information, by comparison audio frequency watermark, identifies the current interactive event that described terminal participates in;
Operate accordingly according to described current interactive event.
2. the interactive control method broadcasted as claimed in claim 1, wherein, described audio frequency watermark is anti-interference type audio frequency watermark.
3. the interactive control method broadcasted as claimed in claim 1 or 2, wherein, described audio frequency watermark is multi-bit word symbol string, comprises program ID flag and interactive event flag.
4. the interactive control method broadcasted as claimed in claim 3, wherein, described audio frequency watermark also comprises multiple value bit, carries out in the process of audio frequency coding in center-side to program, when ground, interval embeds audio frequency watermark, the numerical value that the value bit of audio frequency watermark is corresponding adds 1 in order.
5. the interactive control method broadcasted as claimed in claim 4, wherein, carries out in the process of audio frequency coding in center-side to program, and when adding audio frequency watermark to interval, the audio frequency watermark with identical numerical value is multiple and adjacent.
6. the interactive control method broadcasted as claimed in claim 5, wherein, described terminal is by interactive event identification and extracts the audio frequency watermark in described program, and when generating interactive information, add up the audio frequency watermark number identified, and length is as a part for interactive information when audio frequency watermark number being converted to, or calculating the numerical value of the last audio frequency watermark received and the difference of the numerical value of first audio frequency watermark received, when described difference being converted to, length is as a part for interactive information.
7. the interactive control method broadcasted as claimed in claim 6, wherein, described center-side extracts the audio frequency watermark in interactive information, by comparison audio frequency watermark, comprises when identifying the current interactive event of described terminal: the time long message in described interactive information is converted to a point value information.
8. the interactive Controlling System broadcasted, comprises center-side and terminal, wherein,
Center-side comprises watermark generation module, for, in the process that program carries out audio frequency coding, adding audio frequency watermark to interval; With explanation module, for the audio frequency watermark extracted in interactive information that terminal beams back, by comparison audio frequency watermark, identify the current interactive event of described terminal;
Described terminal comprises identification module, for by interactive event identification and extract described audio frequency watermark, generate interactive information and also send it to center-side.
9. the as claimed in claim 8 interactive Controlling System broadcasted, wherein, described explanation module comprises information comparison list, for recording in audio frequency watermark and interactive event the corresponding relation of the particular content for interaction.
10. the interactive Controlling System broadcasted as claimed in claim 8, wherein, one of local function module is held centered by described watermark generation module, described explanation module is one of high in the clouds function module, and described explanation module is by network and described terminal, local function module and high in the clouds function module communication.
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| CN107967630A (en) * | 2017-12-19 | 2018-04-27 | 北京众蓝影云科技有限责任公司 | Interactive marketing platform and implementation method |
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| CN111190518A (en) * | 2019-12-30 | 2020-05-22 | 中央电视台 | Interaction method and device between first screen and second screen, terminal and storage medium |
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| CN103763586A (en) * | 2014-01-16 | 2014-04-30 | 北京酷云互动科技有限公司 | Television program interaction method and device and server |
| CN104320719A (en) * | 2014-11-14 | 2015-01-28 | 武汉大学 | Television program interaction participating method and system based on audio watermarking |
| CN104519373A (en) * | 2014-12-16 | 2015-04-15 | 微梦创科网络科技（中国）有限公司 | Media program interaction method and related equipment |
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| CN106131589A (en) * | 2016-06-21 | 2016-11-16 | 无锡天脉聚源传媒科技有限公司 | A kind of TV interaction recognition methods and device |
| CN107967630A (en) * | 2017-12-19 | 2018-04-27 | 北京众蓝影云科技有限责任公司 | Interactive marketing platform and implementation method |
| CN108712666A (en) * | 2018-04-04 | 2018-10-26 | 聆刻互动（北京）网络科技有限公司 | A kind of mobile terminal based on interactive audio frequency watermark and television interaction method and system |
| CN108712666B (en) * | 2018-04-04 | 2021-07-09 | 聆刻互动（北京）网络科技有限公司 | Interactive audio watermark-based mobile terminal and television interaction method and system |
| CN111190518A (en) * | 2019-12-30 | 2020-05-22 | 中央电视台 | Interaction method and device between first screen and second screen, terminal and storage medium |
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