CN102281424A - Conference site picture broadcasting method and multipoint control unit - Google Patents
Conference site picture broadcasting method and multipoint control unit Download PDFInfo
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- CN102281424A CN102281424A CN2010102047574A CN201010204757A CN102281424A CN 102281424 A CN102281424 A CN 102281424A CN 2010102047574 A CN2010102047574 A CN 2010102047574A CN 201010204757 A CN201010204757 A CN 201010204757A CN 102281424 A CN102281424 A CN 102281424A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/14—Systems for two-way working
- H04N7/15—Conference systems
- H04N7/152—Multipoint control units therefor
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
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Abstract
The invention discloses a conference site picture broadcasting method and a multipoint control unit, which are used in a distant view presentation video conferencing system. The method comprises the following steps of: in a conferencing process, determining a conference site with the greatest audio stream signal intensity; and broadcasting conference site pictures of the conference site to at least one of a plurality of screens of other conference sites, except for the local conference site, in the distant view presentation video conferencing system. According to the technical scheme provided by the invention, pictures displayed on the screen of each conference site can be switched according to sound broadcasting in the distant view presentation video conferencing system, thereby effectively improving user experience.
Description
Technical field
The present invention relates to the video conferencing field, relate in particular to a kind of meeting-place broadcast of images method and multipoint control unit.
Background technology
Video conferencing system mainly comprises multipoint control unit (Multipoint Control Unit, abbreviate MCU as) and terminal system, wherein, MCU is the key equipment of multi-spot video conference system, it is from the information flow from each meeting field point, extract audio frequency, video, information and signalings such as data, again with the information and the signaling of each meeting field point, send into multiple spot control module and medium process module respectively, finish corresponding audio mix or switching, video mix or switching, data broadcasting and Route Selection, processes such as timing and meeting control, at last that each meeting field point is required various information reconfigure, and are sent to each relevant terminal system equipment.Terminal system is divided into Table top type conference terminal and meeting room type conference terminal two big classes.Characteristics such as Table top type conference terminal cost is low, easy to use, small-scale meeting is used and is held in suitable individual office.Boardroom system/group system is equipped with external accessories such as high-quality zoom lens, high-fidelity music center, large-screen color TV or projection, add the pre-treatment/preprocessor of video, make that the picture image quality is more clear, reach better effect of meeting, be fit to hold fairly large meeting.Conference room terminal is applicable to meeting room, several to dozens of participants' environment.Broadcast terminal is unidirectional receiving terminal, and it can receive the image and the sound of meeting, but can not send image and sound.Broadcast terminal only needing can be used for the occasion of unidirectional delivery information, and for example the higher level is to occasions such as subordinate's reception and registration policies.Portable terminal is on the basis of desktop terminal, mixes wireless access card and wireless launcher, can move to add meeting in the scope of a given area.Conference terminal is configured in local meeting field point and each the sub-venue point in the video conference.
In the conventional video conference system, each meeting-place has only a Dan Ping, one road audio frequency.When the speech of some meeting-place, and the sound maximum, this meeting field picture can be broadcast to other meeting-place automatically, and promptly voice activated control can need not manual operation the broadcast of images of the maximum end of sound to other meeting-place.
Distant view presents with its real telepresenc and is subjected to liking of high-end user deeply, and along with cost reduces gradually, family's demand enlarges day by day, and distant view presents and will come into huge numbers of families gradually.
Distant view is presented technology be applied in the TV conference system, formed distant view and presented conference system.Present in the conference system at distant view, there are a plurality of screens in each meeting-place, multichannel voice frequency, and audio frequency input and output and screen have the position corresponding relation.
In multipoint conference, see for other meeting-place if desired a meeting-place broadcast of images, need user's manual operation, broadcast this meeting-place, make it become broadcast source.But,, and be not suitable for distant view and present conference system if adopt SCVF single channel voice frequency acoustic control broadcasting scheme in the video conferencing system.Because present in the conference system at distant view, to guarantee that not only image follows sound radio, also to guarantee to listen and argue the position, promptly sound is in relevant position output that image shows.
Summary of the invention
Present in the conference system at distant view at correlation technique, can't realize that each meeting-place display image screen follows the scheme that sound radio is switched, the problem that causes user experience the invention provides a kind of acoustic control broadcasting method and distant view and presents conference system, one of to address the above problem at least.
According to an aspect of the present invention, provide in a kind of meeting-place broadcast of images method.
Comprise according to meeting-place of the present invention broadcast of images method: in meeting is carried out, determine the meeting-place of audio stream signal strength signal intensity maximum; Meeting-place broadcast of images to the distant view in meeting-place is presented in the TV conference system except that the meeting-place in a plurality of screens in other meeting-place at least one screen.
According to a further aspect in the invention, provide at a kind of multipoint control unit.
Multipoint control unit according to the present invention comprises: determination module, be used for carrying out in meeting, and determine the meeting-place of audio stream signal strength signal intensity maximum; Broadcast module is used at least one screen in a plurality of screens that meeting-place broadcast of images to distant view with the meeting-place presents TV conference system other meeting-place except that the meeting-place.
By the present invention, in meeting is carried out, determine the meeting-place of audio stream signal strength signal intensity maximum; Meeting-place broadcast of images to the distant view in meeting-place is presented in the TV conference system except that the meeting-place at least one screen in a plurality of screens in other meeting-place, having solved correlation technique presents in the conference system at distant view, can't realize that each meeting-place display image screen follows the scheme that sound radio is switched, cause the not high problem of user experience, and then can present in the conference system at distant view, make each meeting-place display image screen follow sound radio and switch, thereby effectively improved user experience.
Description of drawings
In order to be illustrated more clearly in the technical scheme of the embodiment of the invention, the accompanying drawing of required use is done to introduce simply in will describing embodiment below.
Fig. 1 is for presenting the structural representation of conference system according to the distant view of the embodiment of the invention;
Fig. 2 is the flow chart according to the meeting-place broadcast of images method of the embodiment of the invention;
Fig. 3 is the flow chart of the meeting-place panoramic picture broadcasting method of the preferred embodiment of the present invention;
Fig. 4 is the flow chart of the broadcast of images method of attending a banquet of the preferred embodiment of the present invention;
Fig. 5 is the structured flowchart of the multipoint control unit of the embodiment of the invention; And
Fig. 6 is the structured flowchart of the multipoint control unit of the preferred embodiment of the present invention.
Embodiment
Hereinafter will describe the present invention with reference to the accompanying drawings and in conjunction with the embodiments in detail.Need to prove that under the situation of not conflicting, embodiment and the feature among the embodiment among the application can make up mutually.
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described.
Fig. 1 is the structural representation that distant view presents conference system.As shown in Figure 1, this system comprises: meeting-place 111, meeting-place 112, meeting-place 113 and multipoint control unit 13.Wherein, 111 meeting-place are the broadcast source meeting-place, and the meeting field picture in meeting-place 111 is all seen in other meeting-place, and each meeting-place exists a plurality of screens (there is shown 3), multichannel voice frequency.
Fig. 2 is the flow chart of the meeting-place broadcast of images method of the embodiment of the invention.Wherein, this method is applied to distant view and presents TV conference system, and as shown in Figure 2, this meeting-place broadcast of images method comprises following processing:
Step S202: in meeting is carried out, determine the meeting-place of audio stream signal strength signal intensity maximum;
Wherein, the meeting-place of above-mentioned audio stream signal strength signal intensity maximum promptly refers to the meeting-place of sounding maximum.
Step S204: meeting-place broadcast of images to the distant view in meeting-place is presented in the TV conference system except that the meeting-place at least one screen in a plurality of screens in other meeting-place.
In the conventional video conference system, each meeting-place has only a Dan Ping, one road audio frequency.And presenting in the conference system at distant view, there are a plurality of screens in each meeting-place, multichannel voice frequency, and audio frequency input and output and screen have the position corresponding relation.Thereby adopt traditional acoustic-controlled method, can't realize that each meeting-place display image screen follows the scheme that sound radio is switched.Adopt said method provided by the invention, can present in the conference system, make each meeting-place display image screen follow sound radio and switch, thereby effectively improved user experience at distant view.
Preferably, above-mentioned steps S202 may further include following processing:
(1) determines that distant view presents the attending a banquet of each meeting-place sound intermediate frequency stream signal strength signal intensity maximum of TV conference system;
(2) the corresponding audio stream signal strength signal intensity of will attending a banquet compares, the attending a banquet of the sound intermediate frequency stream signal strength signal intensity maximum that obtains attending a banquet;
The affiliated meeting-place of attending a banquet that (3) will obtain is defined as the meeting-place of audio stream signal strength signal intensity maximum.
By above-mentioned processing, can effectively determine to have the meeting-place of sounding maximum in the meeting-place of a plurality of screens and multichannel voice frequency, and then the meeting field picture in this meeting-place can be broadcasted, realize that the meeting-place display image screen follows the scheme that sound radio is switched.
In preferred implementation process, owing to have a plurality of attending a banquet in each meeting-place, so when determining the meeting-place of sounding maximum, the corresponding sound intensity of attending a banquet of sounding maximum in each meeting-place can be compared, determine attending a banquet of sounding maximum, the corresponding meeting-place of afterwards this being attended a banquet is defined as the meeting-place of sounding maximum.
Preferably, above-mentioned meeting-place image includes but not limited to: meeting-place panoramic picture, the meeting-place image of attending a banquet.
In preferred implementation process, when can field picture being the meeting-place panoramic picture, step S204 may further include following processing above-mentioned: with each image of attending a banquet in the meeting-place all be broadcast in each other meeting-place with this corresponding screen of attending a banquet of attending a banquet on.
For example, with A meeting-place correspondence attend a banquet broadcast of images to the B meeting-place the identical screen of attending a banquet, A meeting-place and the B meeting-place image of attending a banquet is corresponding one by one.Specifically can be referring to Fig. 1, as shown in Figure 1, the meeting-place panoramic picture in broadcast source meeting-place 111 (i.e. three images of attending a banquet) is broadcast to meeting-place 112 and meeting-place 113.Wherein, each of meeting-place 111 attend a banquet image be broadcast in meeting-place 112 and the meeting-place 113 with this corresponding screen of attending a banquet of attending a banquet on.
Below in conjunction with Fig. 3 above-mentioned preferred implementation process is described.
Fig. 3 is the flow chart of the meeting-place panoramic picture broadcasting method of the preferred embodiment of the present invention.As shown in Figure 3, this meeting-place panoramic picture broadcasting method comprises:
Step S302: in the conference process, determine the meeting-place of sound intensity maximum.
Wherein, a plurality of attending a banquet arranged in each meeting-place, determine the maximum acoustic meeting-place according to attending a banquet of maximum acoustic loudness.
Step S304: the meeting-place panoramic picture of sound intensity maximum is broadcast to other each meeting-place.
Preferably, above-mentioned steps S304 may further include following processing: with each image of attending a banquet in the meeting-place of this sound intensity maximum be broadcast to respectively in other meeting-place with this corresponding screen of attending a banquet of attending a banquet on.
In preferred implementation process, when above-mentioned can field picture be meeting-place when attending a banquet image, can adopt another kind of broadcast strategy to come execution in step S304.
For example, when above-mentioned can field picture be the meeting-place image of attending a banquet, and meeting-place the attending a banquet of image correspondence of attending a banquet attend a banquet for maximum sounding, step S304 can comprise following processing:
(1) judges whether meeting-place the attending a banquet of image correspondence of attending a banquet is the current broadcast source;
(2) if not, then attended a banquet in the meeting-place broadcast of images to a screen in each other meeting-place.
In specific implementation process, can be attended a banquet broadcast of images in above-mentioned meeting-place to any screen in each other meeting-place, also can be attended a banquet in this meeting-place broadcast of images to the predetermined screen in each other meeting-place, promptly allow the same image of attending a banquet appear on the same screen in certain meeting-place as far as possible, can more effectively improve user experience like this.Below latter event is described.
Preferably, above-mentioned steps (2) may further include following processing:
A1, search and obtain in each other meeting-place the meeting-place the highest screen of image display frequency of attending a banquet;
B1, judge meeting-place the attending a banquet on the highest screen of display frequency of image correspondence of attending a banquet, whether the time of the last speech of distance is greater than scheduled duration;
C1 is if then upgrade attend a banquet the time limit of speech on the highest screen of display frequency of attending a banquet of image correspondence of meeting-place.
Preferably, above-mentioned steps (2) can further include following processing:
A2, for each other meeting-place, do not finding the meeting-place when attending a banquet the highest screen of image display frequency, search and obtain the meeting-place image of attending a banquet and show the screen that did not change, and the record meeting-place number of times of image of attending a banquet at this screen display;
B2, broadcast site are attended a banquet image to showing the screen that did not change;
C3, upgrade meeting-place the attending a banquet of image correspondence of attending a banquet at the time limit of speech that shows on the screen that did not change.
Below in conjunction with Fig. 4 above-mentioned preferred implementation process is described.
Fig. 4 is the flow chart of the broadcast of images method of attending a banquet of the preferred embodiment of the present invention.Shown in Figure 4, the broadcast of images method of attending a banquet of this preferred embodiment of the present invention comprises:
Step S402: in the conference process, determine the meeting-place of sound intensity maximum.
Wherein, a plurality of attending a banquet arranged in each meeting-place, determine the maximum acoustic meeting-place according to attending a banquet of maximum acoustic loudness.
Step S404: image is the current broadcast source if this is attended a banquet, and does not need to broadcast once more, then execution in step S414;
Step S406: image is not the current broadcast source if this is attended a banquet, and searches this highest screen of the image frequency of occurrences of attending a banquet;
Step S408:, and, then change step S414 apart from shielding nearest time limit of speech greater than the scheduled time (for example, 1 minute) at this if find this highest screen of the frequency of occurrences of attending a banquet; If distance is shielded nearest time limit of speech smaller or equal to 1 minute at this, change step S410;
Step S410: if do not find this highest screen of the frequency of occurrences of attending a banquet, can find recently not active screen, and write down the number of times that this is attended a banquet and occurs at this screen;
Step S412: broadcast this this not active screen of attending a banquet;
Step S414: upgrade this and attend a banquet at the nearest time limit of speech of this screen.
Alternatively, in specific implementation process, also can adopt said method that (except that the attending a banquet of the sounding maximum) image of attending a banquet of one or more other in the above-mentioned meeting-place is broadcast to other meeting-place simultaneously, for example, can be with meeting-place half scape broadcast of images to other meeting-place.
Fig. 5 is the structured flowchart of the multipoint control unit of the embodiment of the invention.Wherein, this multipoint control unit is applied to distant view and presents TV conference system, and as shown in Figure 5, this multipoint control unit comprises: determination module 50 and broadcast module 52.
Adopt multipoint control unit provided by the invention, can present in the conference system, make each meeting-place display image screen follow sound radio and switch, thereby effectively improved user experience at distant view.
Preferably, as shown in Figure 6, determination module 50 may further include: first determines submodule 500, is used for determining that distant view presents the attending a banquet of each meeting-place sound intermediate frequency stream signal strength signal intensity maximum of TV conference system; Comparison sub-module 502 is used for the corresponding audio stream signal strength signal intensity of attending a banquet is compared, and the sound intermediate frequency that obtains attending a banquet flows attending a banquet of signal strength signal intensity maximum; Second determines submodule 504, is used for comparison sub-module is defined as by the affiliated meeting-place of attending a banquet that relatively obtains the meeting-place of audio stream signal strength signal intensity maximum.
Processing by determination module 50, can effectively determine to have the meeting-place of sounding maximum in the meeting-place of a plurality of screens and multichannel voice frequency, and then the meeting field picture in this meeting-place can be broadcasted, realization meeting-place display image screen is followed the scheme that sound radio is switched.
Preferably, above-mentioned can field picture be under the situation of meeting-place panoramic picture, broadcast module 52 is used for the meeting-place each image of attending a banquet and all is broadcast in each other meeting-place and this corresponding screen of attending a banquet of attending a banquet.The preferred working method of broadcast module 52 specifically can repeat no more referring to Fig. 3 herein.
By above-mentioned processing, the panoramic picture in the meeting-place of sounding maximum can be broadcast to other meeting-place, thereby can realize that the meeting-place display image screen follows the scheme that sound radio is switched in real time.
Preferably, as shown in Figure 6, above-mentioned can field picture be to attend a banquet under the situation of image in the meeting-place, broadcast module 52 can further include: judge submodule 520, be used to judge whether meeting-place the attending a banquet of image correspondence of attending a banquet is broadcast source; Broadcasting submodule 522 is used for judging that submodule is output as under the situation not, attends a banquet broadcast of images to a screen in each other meeting-place with the meeting-place.
By above-mentioned processing, can be with the broadcast of images of attending a banquet in the meeting-place of sounding maximum to other meeting-place, thus can realize that the meeting-place display image screen follows the scheme that sound radio is switched in real time.
In preferred implementation process, above-mentioned broadcasting submodule 522 also is used for searching and obtaining each other meeting-place, meeting-place the highest screen of image display frequency of attending a banquet; Judge meeting-place the attending a banquet on the highest screen of display frequency of image correspondence of attending a banquet, whether the time of the last speech of distance is greater than scheduled duration; If then upgrade attend a banquet the time limit of speech on the highest screen of display frequency of attending a banquet of image correspondence of meeting-place.
In preferred implementation process, above-mentioned broadcasting submodule 522, also be used for for each other meeting-place, do not finding the meeting-place when attending a banquet the highest screen of image display frequency, search and obtain the meeting-place image of attending a banquet and show the screen do not change, and the record meeting-place number of times of image at this screen display of attending a banquet; Broadcast site is attended a banquet image to showing the screen that did not change; Upgrade meeting-place the attending a banquet of image correspondence of attending a banquet at the time limit of speech that shows on the screen that did not change.
By above-mentioned processing, can allow the same image of attending a banquet appear on the same screen in certain meeting-place as far as possible, can more effectively improve user experience like this.
Above-mentioned judgement submodule 520 specifically can repeat no more referring to Fig. 4 with the preferred working method that broadcasting submodule 522 mutually combines herein.
In sum, by the foregoing description provided by the invention, present in the conference system at distant view, can guarantee that not only each meeting-place display image screen follows sound radio and switch, can also guarantee to listen and argue the position, be that sound is exported in the relevant position that image shows, thereby can effectively improve user experience.
Obviously, those skilled in the art should be understood that, above-mentioned each module of the present invention or each step can realize with the general calculation device, they can concentrate on the single calculation element, perhaps be distributed on the network that a plurality of calculation element forms, alternatively, they can be realized with the executable program code of calculation element, thereby, they can be stored in the storage device and carry out by calculation element, and in some cases, can carry out step shown or that describe with the order that is different from herein, perhaps they are made into each integrated circuit modules respectively, perhaps a plurality of modules in them or step are made into the single integrated circuit module and realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (11)
1. a meeting-place broadcast of images method is applied to distant view and presents TV conference system, it is characterized in that, comprising:
In meeting is carried out, determine the meeting-place of audio stream signal strength signal intensity maximum;
The meeting-place broadcast of images in described meeting-place to described distant view is presented in the TV conference system except that described meeting-place in a plurality of screens in other meeting-place at least one screen.
2. method according to claim 1 is characterized in that, determines that the meeting-place of audio stream signal strength signal intensity maximum comprises:
Determine that described distant view presents the attending a banquet of each meeting-place sound intermediate frequency stream signal strength signal intensity maximum of TV conference system;
The described corresponding audio stream signal strength signal intensity of attending a banquet is compared, obtain attending a banquet of the described sound intermediate frequency stream signal strength signal intensity maximum of attending a banquet;
Meeting-place under described the attending a banquet of obtaining is defined as the meeting-place of described audio stream signal strength signal intensity maximum.
3. method according to claim 1 is characterized in that, described meeting-place image comprises: meeting-place panoramic picture, the meeting-place image of attending a banquet.
4. method according to claim 3 is characterized in that, described can field picture be described meeting-place panoramic picture, and described meeting-place broadcast of images with described meeting-place comprises to described at least one screen in described other meeting-place:
With each image of attending a banquet in the described meeting-place all be broadcast in each described other meeting-place with this corresponding screen of attending a banquet of attending a banquet on.
5. method according to claim 3, it is characterized in that, described can field picture be the described meeting-place image of attending a banquet, and described meeting-place the attending a banquet of image correspondence of attending a banquet attend a banquet for maximum sounding, and described meeting-place broadcast of images with described meeting-place comprises to described at least one screen in described other meeting-place:
Judge whether described meeting-place the attending a banquet of image correspondence of attending a banquet is the current broadcast source;
If not, then attended a banquet in described meeting-place broadcast of images to a screen in each described other meeting-place.
6. method according to claim 5 is characterized in that, the described meeting-place broadcast of images of attending a banquet is comprised to a screen in each described other meeting-place:
Search and obtain the highest screen of image display frequency of attending a banquet of meeting-place described in each described other meeting-place;
Judge described meeting-place the attending a banquet on the highest screen of described display frequency of image correspondence of attending a banquet, whether the time of the last speech of distance is greater than scheduled duration;
If then upgrade attend a banquet the time limit of speech on the highest screen of described display frequency of attending a banquet of image correspondence of described meeting-place.
7. method according to claim 5 is characterized in that, the described meeting-place broadcast of images of attending a banquet is comprised to a screen in each described other meeting-place:
For each described other meeting-place, do not finding described meeting-place when attending a banquet the highest screen of image display frequency, search and obtain the described meeting-place image of attending a banquet and show the screen that did not change, and write down the described meeting-place number of times of image of attending a banquet at this screen display;
Broadcast the described meeting-place screen that image do not change to described demonstration of attending a banquet;
Upgrade attend a banquet the time limit of speech on the screen that described demonstration did not change of attending a banquet of image correspondence of described meeting-place.
8. a multipoint control unit is applied to distant view and presents TV conference system, it is characterized in that, comprising:
Determination module is used for carrying out in meeting, determines the meeting-place of audio stream signal strength signal intensity maximum;
Broadcast module is used for the meeting-place broadcast of images in described meeting-place to described distant view is presented at least one screen in a plurality of screens in TV conference system other meeting-place except that described meeting-place.
9. multipoint control unit according to claim 8 is characterized in that, described determination module comprises:
First determines submodule, is used for determining that described distant view presents the attending a banquet of each meeting-place sound intermediate frequency stream signal strength signal intensity maximum of TV conference system;
Comparison sub-module is used for the described corresponding audio stream signal strength signal intensity of attending a banquet is compared, and obtains attending a banquet of the described sound intermediate frequency stream signal strength signal intensity maximum of attending a banquet;
Second determines submodule, is used for described comparison sub-module is defined as by the affiliated meeting-place of attending a banquet that relatively obtains the meeting-place of described audio stream signal strength signal intensity maximum.
10. multipoint control unit according to claim 8 is characterized in that,
Described broadcast module is used for described meeting-place each image of attending a banquet and all is broadcast in each described other meeting-place and this seat screen of attending a banquet corresponding.
11. multipoint control unit according to claim 8 is characterized in that, described broadcast module comprises:
Judge submodule, be used to judge whether described meeting-place the attending a banquet of image correspondence of attending a banquet is broadcast source;
The broadcasting submodule is used for being output as under the situation not at described judgement submodule, and broadcast of images is attended a banquet to a screen in each described other meeting-place in described meeting-place.
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PCT/CN2011/075302 WO2011153926A1 (en) | 2010-06-11 | 2011-06-03 | Method for broadcasting meeting place image and multipoint control unit |
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CN105915837A (en) * | 2016-05-30 | 2016-08-31 | 华为技术有限公司 | Video switching method, video switching device and video switching system |
CN105915837B (en) * | 2016-05-30 | 2019-10-25 | 华为技术有限公司 | A kind of video switching method, device and system |
CN113596349A (en) * | 2021-07-26 | 2021-11-02 | 世邦通信股份有限公司 | Conference method, system, device and storage medium for automatic linkage of speech position and video |
CN113596349B (en) * | 2021-07-26 | 2024-06-04 | 世邦通信股份有限公司 | Conference method, system, device and storage medium for automatic linkage video of speaking position |
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CN102281424B (en) | 2013-08-07 |
WO2011153926A1 (en) | 2011-12-15 |
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