CN102026022A - Terminal multimodal processing method of CMMB mobile TV and processing terminal thereof - Google Patents
Terminal multimodal processing method of CMMB mobile TV and processing terminal thereof Download PDFInfo
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Abstract
The present invention relates to a terminal multimodal processing method of a CMMB mobile TV and a processing terminal thereof; the method comprises the following steps: receiving a CMMB multiplexing frame; obtaining a notice which indicates whether the CMMB multiplexing frame comprises scene description data of a dynamic rich media or not; determining whether the CMMB multiplexing frame comprises the scene description data of the dynamic rich media or not according to the notice, and determining whether to analyze the scene according to the scene description data or not, if yes, executing the following steps: analyzing the scene description data and generating the scene description; extracting multimedia content element according to the scene description; decoding the multimedia content element and combining a presentation of rich media form; otherwise extracting the multimedia content element according to a protocol confirming to the CMMB standard and decoding the multimedia content element. The terminal of the present invention is compatible to an interactive mobile TV and a common CMMB mobile TV.
Description
Technical field
The present invention relates to the interactive mobile TV that CMMB and Cellular Networks merge, especially relating to can be at the multi-mode processing method and the processing terminal of compatible dynamic interaction pattern and general mode.
Background technology
Based on GSM, watch the normally mode by program request and clean culture of Streaming Media on the equipment of GPRS and TD-SCDMA, all needing to set up man-to-man Streaming Media for each user connects, number of users is many more, the Cellular Networks bandwidth resources that consumed are also many more, so mode of unicast can increase the load of cellular network, influence the effect of video playback.In addition, also can use MBMS multicasting technologys such as (multimedia broadcasting and multicast services) to realize the Streaming Media application in Cellular Networks, but because the frequency bandwidth characteristics of Cellular Networks, even use multicasting technology, the number of watching that Cellular Networks is supported in same sub-district still is restricted.
Mobile TV is based on huge cellphone subscriber group, has very big market prospects.The mobile TV standard that most is hopeful to promote in China is CMMB.CMMB is the mobile TV of broadcast mode, and the mobile TV signal sends to portable terminal by the One-to-All Broadcast mode.The operation cost of mobile TV and watching quality are not watched the restriction of number like this.Just be fused in the communication apparatus based on the TD-SCDMA standard based on this CMMB standard cell phone TV functions.
Current, no matter at mobile TV, IPTV, still at digital TV field, interactive value-added service faces huge growth space.These value-added services come down to by the mutual of various content element (text, video, audio frequency, vector graphics etc.) in the Rich Media (Rich Media) realized.Although mobile TV CMMB standard and Cellular Networks TD-SCDMA standard provide the passage of broadcast video and two-way interaction respectively, do not allowing the Rich Media on user and the mobile TV to carry out dynamic interaction on this platform.This mainly is because present CMMB technology can not realize dynamic rich media uses, and only Rich Media also is the browser user interface of simple static state, and another problem is that the CMMB technology does not have data feedback channel, so can not realize interactive application.
Therefore, wish on CMMB and these two transmission channels of TD-SCDMA, should have the fused business of dynamic rich media, to realize interactively mobile TV.
In addition, wish that terminal can select common CMMB mobile TV or Rich Media's mobile TV according to the ability of self, to realize the compatibility of two kinds of patterns.
Summary of the invention
An object of the present invention is to propose a kind of terminal multi-mode processing method of CMMB mobile TV, can realize the mobile TV of dynamic interaction, and compatible general mode.
Another object of the present invention provides a kind of CMMB mobile phone TV terminal with aforementioned capabilities.
One aspect of the invention proposes a kind of terminal multi-mode processing method of CMMB mobile TV, may further comprise the steps: receive the CMMB multiplexed frame; Obtain the notice whether described CMMB multiplexed frame of an indication comprises the scene description data of dynamic rich media; Determine according to described notice whether described CMMB multiplexed frame comprises the scene description data of dynamic rich media; Determine whether according to described scene description data parses scene, if then carry out following steps:
Resolve described scene description data and generate scene description; Extract the content of multimedia key element according to described scene description; And
Described content of multimedia key element is decoded and is combined into presenting of Rich Media's form;
If not, then extract described content of multimedia key element and decode according to the agreement that meets the CMMB standard.
In one embodiment of this invention, described CMMB multiplexed frame is the scene description data that is configured to the bearing multimedia content element and whether carries described dynamic rich media in a server end, and sends to described terminal by a CMMB down going channel.
In one embodiment of this invention, after described content of multimedia key element being decoded and be combined into the presenting of Rich Media's form, also comprise: the terminal use that presents to who shows described Rich Media form; Operate the remote interaction incident that produces in response to the user, send described remote interaction incident to described server by a Cellular Networks interactive channel.
In one embodiment of this invention, said method comprises that also the response user operates the local interaction incident that produces, and presenting according to described local interaction incident change terminal Rich Media.
In one embodiment of this invention, described notice is one to be included in the indication parameter in the described CMMB multiplexed frame.
In one embodiment of this invention, described notice is to send to described terminal by a Cellular Networks interactive channel.
In one embodiment of this invention, described content of multimedia key element comprise following partly or entirely: audio frequency, video, vector graphics, text, picture.
Another aspect of the present invention proposes a kind of multi-mode processing terminal of CMMB mobile TV, comprises multiplexed frame data sink, demodulation multiplexer and processor.The multiplexed frame data sink receives the CMMB multiplexed frame from CMMB downlink broadcast channel.Demodulation multiplexer extracts the content of multimedia key element in the CMMB multiplexed frame that is received, and determines according to an indication parameter whether described CMMB multiplexed frame comprises the scene description data of dynamic rich media and extract described scene description data.Processor determines whether according to described scene description data parses scene, if, then resolve described scene description data and generate scene description, extract described content of multimedia key element according to described scene description, and described content of multimedia key element is decoded and is combined into presenting of Rich Media's form; If not, then extract described content of multimedia key element and decode according to the agreement that meets the CMMB standard.
In one embodiment of this invention, above-mentioned terminal also comprises: input equipment, operate the remote interaction incident that produces in response to the user; And information transceiver, described remote interaction incident is sent to server by the Cellular Networks interactive channel from terminal.
In one embodiment of this invention, above-mentioned input equipment also responds the user and operates the incident in place interaction that produces, and described second processor is changed presenting of local Rich Media according to described incident in place interaction.
In one embodiment of this invention, above-mentioned indication parameter is from described CMMB multiplexed frame.
In one embodiment of this invention, above-mentioned indication parameter is from a Cellular Networks interactive channel, and described terminal comprises that also one is used to receive the information transceiver of described indication parameter.
In one embodiment of this invention, above-mentioned rich-media content key element comprise following partly or entirely: audio frequency, video, vector graphics, text, picture.
Whether the present invention makes the CMMB mobile TV can realize Rich Media's dynamic interaction by above technical scheme, and allow terminal to select to arrange to play according to Rich Media, so that compatibility flexibly to be provided.
Description of drawings
Fig. 1 illustrates the CMMB mobile TV system block diagram of one embodiment of the invention.
Fig. 2 illustrates the transmitting terminal process chart of the CMMB mobile TV of one embodiment of the invention.
Fig. 3 illustrates the receiving terminal handling process of the CMMB mobile TV of one embodiment of the invention.
Fig. 4 illustrates the interactive operation process of feedback of receiving terminal of the CMMB mobile TV of one embodiment of the invention.
Fig. 5 illustrates the specific implementation of the CMMB mobile TV system of one embodiment of the invention.
Fig. 6 illustrates the layout example of the dynamic rich media of one embodiment of the invention.
Fig. 7 illustrates Rich Media's processing procedure of the transmitting terminal of one embodiment of the invention.
Embodiment
In following embodiment, the dynamic rich media interaction technique based on the fusion of CMMB mobile TV and Cellular Networks has been described, wherein Cellular Networks can be the 2G network, for example GSM network, or 3G network, for example WCDMA network or TD-SCDMA network.If not otherwise specified, in the context of the present invention, dynamic rich media is abbreviated as Rich Media.
Dynamic rich media scene and generation thereof and transmission are at first described.Dynamic rich media scene technology set forth how rich-media content is encoded and on various communication channels and equipment transmission and decoding consolidation form Rich Media's resource.These Rich Media's resources include but not limited to audio frequency, video, vector graphics, text, picture etc.As shown in Figure 5, the basic function of rich medium scene description technique is: describe the layout of rich-media content key element on room and time, support each content element of Rich Media being current dynamically updating with mutual.In an embodiment of the present invention, the data format of dynamic rich media scene description can have a variety of, comprises FLASH, SLIVERLIGHT and MPEG-LASER etc.In a particular embodiment, use the MPEG-LASER that meets ISO/IEC 14496-20 standard to illustrate as an example.
The rich medium scene description technique has been described the layout of rich-media content key element on room and time, and this realizes by a kind of data that are called the dynamic rich media contextual data.The dynamic rich media contextual data comprises scene description, and this scene description embodies audio frequency, video, vector graphics, the layout of rich-media content key elements such as text, picture.In the example of Fig. 6, the left side, interface is illustrated in the space layout of T constantly, wherein comprise the layout of rich-media content key elements such as video, figure and captions, and the right side, interface is in time T+1 space layout constantly.Space layout has not only been embodied on the right side, interface, has also reacted the scene variation in the moment from the time T to T+1.
One embodiment of the invention are by the interactive mobile TV of the realization of above-mentioned Rich Media, CMMB and TD-SCDMA fusion application.With reference to shown in Figure 1, the mutual mobile TV system of present embodiment is made of mutual mobile phone TV server 100 and portable terminal 200.Wherein between mutual mobile phone TV server 100 and portable terminal 200, set up CMMB down channel 300 and TD-SCDMA interactive channel 400.CMMB down channel 300 is as the downlink broadcast transmission mechanism, and TD-SCDMA interactive channel 400 is typical Cellular Networks two-way interaction passages, is used to provide interactive services.
Mutual mobile phone TV server 100 is responsible for providing the mobile phone TV services of mutual Rich Media to mobile phone users.The concrete function of server 100 comprises use CMMB down going channel, issues rich medium scene data of description and associated audio frequency thereof with broadcast mode, and data such as video also comprise by TD-SCDMA interactive channel 400, receives interactive feedback from portable terminal 200.
The function of CMMB down going channel 300 is modulation and sends the CMMB multiplexed frame.The function of TD-SCDMA interactive channel 400 is interaction feedbacks that demodulation and mobile terminal receive 200 send over.
The function of portable terminal 200 is demodulation and receives the CMMB multiplexed frame, and extracts multiplexed sub frame and audio section wherein, video-frequency band and data segment.Scene description is resolved and generated to portable terminal 200 also to the rich medium scene data of description in the data segment, and according to the scene description that is generated the audio frequency in the multiplexed sub frame, video, multimedia content element such as vector graphics is combined into presenting of Rich Media's form, and is presented on the display screen of portable terminal 200.In addition, portable terminal 200 is the interactive feedback encoding between the presenting of user and Rich Media's form and be modulated into the TD-SCDMA signal, sends to mutual mobile phone TV server 100 then.
In one embodiment, interaction comprises that in place interaction the incident that produces behind the interface interaction that user and Rich Media present acts on local Rich Media and plays, and for example changes presenting of local Rich Media's broadcast.In another embodiment, interaction comprises remote interaction, and the incident that produces behind the interface interaction that user and Rich Media present sends feedback to far-end server.That is to say, the interactive feedback encoding between the presenting of user and Rich Media's form and be modulated into the TD-SCDMA signal and send to mutual mobile phone TV server.
In practice, not all portable terminal 200 all has Rich Media's decoding capability.Therefore need make the CMMB mobile TV of supporting Rich Media's technology and existing CMMB television program delivery system backwards-compatible.Because it is the rich medium scene data carrys in the multiplexed frame of CMMB as an independent data flow and by broadcast mode transmission, very little to the change of the mobile TV transmission system of existing CMMB like this.Transmitting terminal, whether promptly mutual mobile phone TV server 100 can comprise the notice of rich medium scene data of description in band or out of band additional this program of indication of CMMB TV programme.Receiving terminal, promptly portable terminal 200 can determine whether the program that is received comprises Rich Media's stream by this notice.According to this information, receiving terminal can select to resolve or do not understand this road rich medium scene easily.
In fact, the above embodiments also are applicable to the downlink broadcast of other types and the combination of two-way interaction transmission channel, and for example CMMB and GSM's combines CMMB and combining of WCDMA etc.
The method that flows in conjunction with Rich Media alternatively in the CMMB of transmitting terminal at first is described below.Shown in seeing figures.1.and.2 simultaneously, this flow process may further comprise the steps:
Step S10 in mutual mobile phone TV server 100, carries multi-medium datas such as audio section, video-frequency band, and carries the rich medium scene data of description alternatively in the data segment of CMMB multiplexed sub frame.
Step S20, (or outside band of CMMB) is provided with a rich media TV indication parameter in the CMMB multiplexed frame, illustrates whether this CMMB multiplexed frame comprises the rich medium scene data of description.
Step S30 uses CMMB passage 300, sends the CMMB multiplexed frame with broadcast mode to portable terminal 200.This multiplexed frame can comprise several multiplexed sub frames.
In one embodiment, the rich medium scene form of describing the contextual data comprise meets XML (Extensible Markup Language, extend markup language) standard.In another embodiment, the rich medium scene form of describing the contextual data comprise meets SVG (Scalable Vector Graphics, scalable vector graphics) standard.In another embodiment, the rich medium scene form of describing the contextual data comprise meets ISO/IEC 14496-20 (MPEG-LASER) standard.
With reference to shown in Figure 7, if comprise the dynamic rich media scene, then the step of processing procedures such as its carrying, packing and transmission is specific as follows among the step S10:
Step S11 is cut apart the dynamic rich media contextual data and is packaged into data segment;
Step S12 puts into data segment and audio frequency and video section the multiplexed sub frame of CMMB together;
Step S13 constitutes a multiplexed frame with several multiplexed sub frames;
Step S14 constitutes a broadcast channel frame with several multiplexed frames;
Step S15, the mobile broadcast Channel Modulation also sends this broadcast channel frame.
Correspondingly, Rich Media's handling process of receiving terminal (being terminal 200) may further comprise the steps as shown in Figure 3:
Mobile phone terminal receives the CMMB multiplexed frame, and resolves the mobile TV data according to following two kinds of patterns and step:
Step S110 receives broadcast channel frame by the mobile broadcast channel;
Step S120, this broadcast channel frame of demodulation is also obtained the CMMB multiplexed frame;
Step S130 receives the rich media TV indication parameter, and this parameter can receive in multiplexed frame, perhaps by other passage, receives as TD-SCDMA interactive channel 100;
Step S140 judges whether comprise the rich medium scene data of description in the multiplexed frame according to the rich media TV indication parameter;
Step S150 need to determine whether parses scene.
If the rich media TV indication parameter shows that the CMMB multiplexed frame comprises the rich medium scene data and portable terminal 200 is selected to play mobile TV according to the arrangement of rich coal body scene, portable terminal carries out following steps so:
In step S160, at first scene description is resolved and generated to the rich medium scene data of description in the data segment of multiplexed frame;
In step S170, extract content of multimedia key elements such as audio frequency, video, vector graphics according to the scene description that is generated; These content of multimedia key elements are separated from multiplexed sub frame through the process of demultiplexing.
In step S180, multimedia resource is decoded and is combined into presenting of Rich Media's form, and on the display screen of step S200 at portable terminal the play multimedia content key element.
If the rich media TV indication parameter shows the CMMB multiplexed frame and does not comprise the rich medium scene data, perhaps portable terminal 200 is not selected to play mobile TV (for example not possessing Rich Media's decoding capability) according to the arrangement of rich medium scene, portable terminal 200 unpacks, extracts data such as audio frequency and video by the decoding agreement that meets the CMMB standard in step S190 so, and plays in step S200.
Multimedia resources such as audio frequency, video, vector graphics are combined into being presented in the situation on the display screen of Rich Media's form at portable terminal 200, with reference to shown in Figure 4, in step S210, portable terminal 200 can receive the human-computer interaction operation that the user carried out at the interface by input equipment (as keyboard, touch-screen etc.) and presenting of Rich Media.
In step S220, the remote interaction incident that produces after the above-mentioned human-computer interaction is sent interaction feedback by TD-SCDMA exchange channels 400 to mutual mobile phone TV server 100.
In addition, interaction also comprises in place interaction, and at step S230, the incident that produces behind the interface interaction that user and Rich Media are presented acts on local Rich Media and plays.
Fig. 5 illustrates the specific implementation of the CMMB mobile TV system of one embodiment of the invention.With reference to shown in Figure 5, mutual mobile phone TV server 100 further comprises multiplexer 102, CMMB modulation transmitter 104 and information transceiver 106 and processor 108.
In mutual mobile phone TV server 100 sides, audio, video data 10 and optional scene description data 20 (showing with empty frame table) are formed the CMMB multiplexed frame in mode shown in Figure 7 in multiplexer 102, and further form broadcast channel frame.A rich media TV indication parameter also is set in multiplexed frame, illustrates whether this CMMB multiplexed frame comprises the rich medium scene data of description.In CMMB modulation transmitter 104, modulate and send this broadcast channel frame then.The CMMB network provides the broadcast downstream channel of broadcast channel frame.In replaceability embodiment, also can send above-mentioned rich media TV indication parameter by information transceiver 106.
In portable terminal 200 sides, CMMB demodulator 202 is used for receiving and the demodulation broadcast channel frame.This broadcast channel frame is obtained the CMMB multiplexed frame through multiplexed frame data sink 204, after demodulation multiplexer 206 is handled, extract audio, video data 10 key elements such as content of multimedia such as grade wherein, and whether demodulation multiplexer 206 also extracts scene description data 20 according to the rich media TV indication parameter decision that comprises (or information transceiver 214 receives) in the multiplexed frame.Data are handled by processor 208, if the arrangement broadcast mobile TV of rich medium scene press in processor 208 decisions, then according to Rich Media's mode treatment data (step S160-S180 as described above) and present the User Interface of Rich Media in display screen 210.On the contrary, if processor 208 decision is play mobile TV (for example not possessing Rich Media's decoding capability) not according to the arrangement of rich medium scene, then according to general mode deal with data (step S190 as described above) and in display screen 210, present common CMMB mobile TV interface.
Under Rich Media's pattern, portable terminal 200 side joints are received the interactive operation of user by input equipment 212 inputs.This operation can be sent through 3G network by information transceiver 214.3G network provide interactive information up/descending TD-SCDMA interactive channel.
Mutual mobile phone TV server 100 can receive above-mentioned interactive information by information transceiver 106, after handling by processor 108, revises audio, video data 10 and the scene description data 20 of next time issuing portable terminal according to interactive information.
Above-mentioned system and method all can be used at numerous areas.In an application examples, mutual mobile phone TV server 100 generates the ballot button and sends to portable terminal 200 by the CMMB down channel together as scene description data and audio, video data.The terminal use opens the CMMB mobile TV, receives the CMMB TV signal and begin to play, and clicks the ballot button on the mobile TV interface, sends relevant vote information to server 100.Server 100 can statistical correlation vote information.
In the Another application example, mutual mobile phone TV server 100 generates the position of video and video location is changed to the thumbnail form and sends to portable terminal 200 by CMMB together as scene description data and audio, video data.The terminal use opens the CMMB mobile TV, receives the CMMB TV signal and begins to play, and receiver, video position contextual data, and pressing video downsizing form (such as 1/4 screen size) broadcast.
Therefore, by the method and system that the embodiment of the invention proposed, make the CMMB mobile TV can realize Rich Media's dynamic interaction; And, allow terminal to select whether to arrange to play, so that compatibility flexibly to be provided according to Rich Media according to self-ability.
The foregoing description provides to those of ordinary skills and realizes or use of the present invention; those of ordinary skills can be under the situation that does not break away from invention thought of the present invention; the foregoing description is made various modifications or variation; thereby protection scope of the present invention do not limit by the foregoing description, and should be the maximum magnitude that meets the inventive features that claims mention.
Claims (21)
1. the terminal multi-mode processing method of a CMMB mobile TV may further comprise the steps:
Receive the CMMB multiplexed frame;
Obtain the notice whether described CMMB multiplexed frame of an indication comprises the scene description data of dynamic rich media;
Determine according to described notice whether described CMMB multiplexed frame comprises the scene description data of dynamic rich media;
Determine whether according to described scene description data parses scene, if then carry out following steps:
Resolve described scene description data and generate scene description;
Extract the content of multimedia key element according to described scene description; And
Described content of multimedia key element is decoded and is combined into presenting of Rich Media's form;
If not, then extract described content of multimedia key element and decode according to the agreement that meets the CMMB standard.
2. the method for claim 1, it is characterized in that, described CMMB multiplexed frame is the scene description data that is configured to the bearing multimedia content element and whether carries described dynamic rich media in a server end, and sends to described terminal by a CMMB down going channel.
3. the method for claim 1 is characterized in that, also comprises after described content of multimedia key element being decoded and be combined into the presenting of Rich Media's form:
The terminal use that presents to who shows described Rich Media form;
Operate the remote interaction incident that produces in response to the user, send described remote interaction incident to described server by a Cellular Networks interactive channel.
4. method as claimed in claim 3 is characterized in that, comprises that also the response user operates the local interaction incident that produces, and presenting according to described local interaction incident change terminal Rich Media.
5. the method for claim 1 is characterized in that, described notice is one to be included in the indication parameter in the described CMMB multiplexed frame.
6. the method for claim 1 is characterized in that, described notice is to send to described terminal by a Cellular Networks interactive channel.
7. the method for claim 1 is characterized in that, the scene description data of described dynamic rich media meets the XML standard.
8. the method for claim 1 is characterized in that, the scene description data of described dynamic rich media meets the SVG standard.
9. the method for claim 1 is characterized in that, the scene description data of described dynamic rich media meets the MPEG-LASER standard.
10. as claim 3 or 6 described methods, it is characterized in that, described Cellular Networks interactive channel be GSM interactive channel, TD-SCDMA interactive channel, WCDMA interactive channel one of them.
11. the method for claim 1 is characterized in that, described content of multimedia key element comprise following partly or entirely: audio frequency, video, vector graphics, text, picture.
12. the multi-mode processing terminal of a CMMB mobile TV comprises:
The multiplexed frame data sink receives the CMMB multiplexed frame from CMMB downlink broadcast channel;
Demodulation multiplexer extracts the content of multimedia key element in the CMMB multiplexed frame that is received, and determines according to an indication parameter whether described CMMB multiplexed frame comprises the scene description data of dynamic rich media and extract described scene description data;
Processor, determine whether according to described scene description data parses scene, if, then resolve described scene description data and generate scene description, extract described content of multimedia key element according to described scene description, and described content of multimedia key element is decoded and is combined into presenting of Rich Media's form; If not, then extract described content of multimedia key element and decode according to the agreement that meets the CMMB standard.
13. terminal as claimed in claim 12 is characterized in that, also comprises:
Input equipment is operated the remote interaction incident that produces in response to the user; And
Information transceiver sends to server by the Cellular Networks interactive channel from terminal with described remote interaction incident.
14. terminal as claimed in claim 13 is characterized in that, described input equipment also responds the user and operates the incident in place interaction that produces, and described second processor is changed presenting of local Rich Media according to described incident in place interaction.
15. terminal as claimed in claim 12 is characterized in that, described indication parameter is from described CMMB multiplexed frame.
16. terminal as claimed in claim 12 is characterized in that, described indication parameter is from a Cellular Networks interactive channel, and described terminal comprises that also one is used to receive the information transceiver of described indication parameter.
17. terminal as claimed in claim 12 is characterized in that, the scene description data of described dynamic rich media meets the XML standard.
18. terminal as claimed in claim 12 is characterized in that, the scene description data of described dynamic rich media meets the SVG standard.
19. terminal as claimed in claim 12 is characterized in that, the scene description data of described dynamic rich media meets the MPEG-LASER standard.
20. terminal as claimed in claim 12 is characterized in that, described Cellular Networks interactive channel be GSM interactive channel, TD-SCDMA interactive channel, WCDMA interactive channel one of them.
21. terminal as claimed in claim 12 is characterized in that, described rich-media content key element comprise following partly or entirely: audio frequency, video, vector graphics, text, picture.
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| WO2016095166A1 (en) * | 2014-12-15 | 2016-06-23 | 深圳Tcl数字技术有限公司 | Method and device for extracting meta information of multimedia file |
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| WO2016095166A1 (en) * | 2014-12-15 | 2016-06-23 | 深圳Tcl数字技术有限公司 | Method and device for extracting meta information of multimedia file |
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Application publication date: 20110420 |