CN101115183B - Auxiliary stream transmission control method, MCU, chairman terminal and video terminal - Google Patents
Auxiliary stream transmission control method, MCU, chairman terminal and video terminal Download PDFInfo
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- CN101115183B CN101115183B CN2007101214756A CN200710121475A CN101115183B CN 101115183 B CN101115183 B CN 101115183B CN 2007101214756 A CN2007101214756 A CN 2007101214756A CN 200710121475 A CN200710121475 A CN 200710121475A CN 101115183 B CN101115183 B CN 101115183B
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Abstract
The invention provides a token-modeled control method to send the auxiliary current in the double-current video conference, an MCU and a video terminal. The sending of the auxiliary current is controlled by a president terminal. The invention improves the flexibility of controlling the sending of the auxiliary current.
Description
Technical field
The present invention relates to the multi-media communication technical field, be particularly related to auxilliary stream sends in a kind of double-current video conference of token Presentation pattern control method, multipoint control unit (MCU, Multipoint ControlUnit), chairman's terminal and video terminal.
Background technology
Video conferencing system realizes virtual meeting by the network communications technology, and the user who disperses on the geography is gathered in a place, by various ways exchange of information such as image, sound, carries out collaborative work.Space length has been shortened in video conference to the full extent, has made things convenient between the cooperation member in real time, has exchanged intuitively.
Present video conference has realized sending simultaneously two-way image (double fluid) and has given meeting-place, a distant place, and common one road image is speaker's image (being called main flow), and another road image is can field picture or film information (being called auxilliary stream).H.239 specify the control of double-current transmission in the video communication standard, comprised live telecast (Live) and token (Presentation) pattern.Wherein, under the Live pattern, a plurality of video terminals can send auxilliary stream simultaneously in the meeting, and under the Presentation pattern, an auxilliary stream sender are only arranged in the meeting, at a time promptly, have only a video terminal can send auxilliary stream.
Figure 1 shows that the connection diagram of video terminal, as shown in Figure 1, in present video conference, the two-path video input is obtained in the video terminal support simultaneously, for example, one the tunnel is the image that arrives by the camera collection that analog port is imported, and another road is live image or computer (PC) desktop (film for playing on the computer in Fig. 1).For the two-path video signal that video terminal receives, then can respectively the two-way image be exported by two video display apparatus (such as the television set among Fig. 1 and display/projecting apparatus).Figure 2 shows that the networking schematic diagram of video conference.As shown in Figure 2, in multipoint videoconference, convene video terminal to add video conference by MCU, realize the interchange between each member.
In the double-current video conference of token pattern, secondary flow sends control and realizes that by token, in fact token refers to the secondary flow sending permission here.In the prior art, a kind of implementation that secondary flow sends control is, by the terminal of MCU appointment transmission secondary flow, take Fig. 2 as example, is video terminal end A as specifying the terminal that sends secondary flow.So video terminal A sends to MCU with the two-way image, be transmitted to other video terminals in the meeting through MCU.And even video terminal B or C start secondary flow, but owing to there is not token, therefore can't send its secondary flow this moment.Because existing MCU adopts B/S (browser/server) structure, the conference administrator passes through after browser lands MCU control and management to be carried out in meeting.When terminal to apply sent secondary flow, MCU was difficult to feed back to browser after receiving this application, thereby the conference administrator also just can't obtain relevant prompting, can not make respective operations to the application of terminal.Because the restriction of B/S structure, cause MCU to be difficult to the demand that terminal in the conference process produces is made response, can't realize mutual flexibly with each terminal information, therefore, in the above-mentioned implementation, can only adopt when convening video conference, the mode by MCU specifies auxilliary stream sender or predetermined process rule in advance realizes the control that auxilliary stream sends.In the above-mentioned implementation, MCU specifies the secondary flow sender, the Token Control of secondary flow is managed by MCU, the secondary flow sending permission can only be by the MCU setting of taking the initiative in advance, and terminal can't the transmission route of active obtaining secondary flow, in video conference, if need to carry out the token change, then must stress the relevant setting of new change at MCU by the conference administrator, this sends to secondary flow and brings certain constraint, has limited the flexibility that secondary flow sends.
The another kind of scheme of secondary flow transmission control that realizes of the prior art is, the token of secondary flow be can't help MCU control, but in video conference, distribute to the terminal that last sends secondary flow, namely, if video terminal A is sending secondary flow at present, but as long as terminal B or C start secondary flow, then the secondary flow sending permission is just occupied by video terminal B or C, and video terminal A stops its secondary flow and sends.The shortcoming of this scheme is that the control owing to lacking token causes easily the confusion of secondary flow sending permission, thereby affects the normal order of video conference.
Technical problem to be solved by this invention provides control method, MCU, chairman's terminal and the video terminal that secondary flow sends in a kind of double-current video conference of token pattern, sends the flexibility of control in order to improve secondary flow.
For solving the problems of the technologies described above, it is as follows to the invention provides scheme:
The control method that secondary flow sends in a kind of double-current video conference of board pattern,
Multipoint control unit MCU is issued to chairman's terminal with secondary flow Token Control power;
Chairman's terminal is obtained secondary flow Token Control power, selects video terminal in the video conference as the secondary flow sender, and sends the message of agreeing that secondary flow sends to selecteed video terminal by MCU;
Described selecteed video terminal arranges this video terminal as the secondary flow sender according to the message that the agreement secondary flow that receives sends, and returns response message by MCU to chairman's terminal, and sends the secondary flow of this video terminal to MCU;
MCU and chairman's terminal are behind the response message of the message that receives described agreement secondary flow transmission, and the current secondary flow token keeper information of upgrading separately respectively is described selecteed video terminal.
Control method of the present invention, wherein, described chairman's terminal when allowing this video terminal to send auxilliary stream, selects this video terminal as auxilliary stream sender further according to the video terminal request.
Control method of the present invention, wherein, described chairman's terminal is further cancelled the current secondary flow sender in the video conference, and sends cancellation secondary flow sender's message to the video terminal that will be cancelled the secondary flow sender by MCU; Video terminal further according to the cancellation secondary flow sender's who receives message, is cancelled this video terminal as the secondary flow sender, and is stopped to send the secondary flow of this video terminal.
Control method of the present invention, wherein, when not having the secondary flow sender in the current video meeting, chairman's terminal directly selects described video terminal as the secondary flow sender; When in the current video meeting, having the secondary flow sender, behind the current secondary flow sender of chairman's terminal in the cancellation video conference, select again described video terminal as the secondary flow sender.
Control method of the present invention, wherein, described chairman's terminal is after its application chairman success, and the current secondary flow token keeper information of further safeguarding according to multipoint control unit MCU is safeguarded oneself current secondary flow token keeper information.
Control method of the present invention, wherein,
Chairman's terminal further behind the response message of the message that receives described cancellation secondary flow sender, is upgraded its current secondary flow token keeper who safeguards for empty.
Control method of the present invention, wherein,
Chairman's terminal is further selected own to the secondary flow sender, and upgrades its current secondary flow token keeper who safeguards and be chairman's terminal, and its secondary flow is sent to MCU;
And chairman's terminal is when oneself is the secondary flow sender, further send cancellation secondary flow sender's message to MCU, behind the response message of the message that receives this cancellation secondary flow sender, cancellation is own to the secondary flow sender, stop to send secondary flow, and upgrade its current secondary flow token keeper who safeguards for empty.
Control method of the present invention, wherein,
MCU receives the message that agreement secondary flow that chairman's terminal sends sends, and is forwarded to corresponding video terminal, and the response message of the message that sends of the agreement secondary flow returned of receiver, video terminal, and is forwarded to chairman's terminal; MCU receives the secondary flow that the secondary flow sender sends, and is forwarded to other video terminal except this secondary flow sender.
Control method of the present invention, wherein, described MCU further receives the cancellation secondary flow sender's of chairman's terminal transmission message, and is forwarded to corresponding video terminal; And, the response message of the cancellation secondary flow sender's that the receiver, video terminal sends message, and be forwarded to chairman's terminal.
Control method of the present invention, wherein,
MCU safeguards current secondary flow token keeper information, and after the chairman in video conference was released, MCU was according to its current secondary flow token keeper information of safeguarding, the control secondary flow sends;
Behind the response message of the message that the agreement secondary flow that receives described video terminal transmission sends, MCU further upgrades its current secondary flow token keeper who safeguards for sending the video terminal of this response message;
Behind the response message of the message that receives the cancellation secondary flow sender that video terminal sends, MCU further upgrades its current secondary flow token keeper who safeguards for empty.
Control method of the present invention, wherein, MCU is further used for after the secondary flow that receives chairman's terminal, upgrades its current secondary flow token keeper who safeguards and is chairman's terminal; And be chairman's terminal current secondary flow sender, and when receiving the cancellation secondary flow sender's that chairman's terminal sends message, upgrade current secondary flow sender for empty.
Control method of the present invention, wherein,
MCU upgrades its current secondary flow token keeper who safeguards for empty, and notifies chairman's terminal to upgrade current secondary flow token keeper information after detecting current secondary flow sender and leaving video conference.
A kind of video conferencing system comprises multipoint control unit MCU, chairman's terminal and video terminal;
Wherein said MCU comprises:
Secondary flow Token Control power issues the unit, is used for secondary flow Token Control power is issued to chairman's terminal;
Message processing unit be used for to receive the message that agreement secondary flow that chairman's terminal sends sends, and is forwarded to corresponding video terminal, and the response message of the message that sends of the agreement secondary flow returned of receiver, video terminal, and is forwarded to chairman's terminal;
The auxilliary bill unit that circulates is used to receive the auxilliary stream that current auxilliary stream sender sends, and is forwarded to the video terminal except that current auxilliary stream sender in the video conference.
Wherein said chairman's terminal comprises:
Secondary flow sender's selected cell is used for obtaining secondary flow Token Control power, selects video terminal in the video conference as the secondary flow sender, and sends the message of agreeing that secondary flow sends to selecteed video terminal;
Wherein said video terminal comprises:
The second identity setting unit is used for this video terminal being set as the secondary flow sender after receiving the message of agreeing the secondary flow transmission;
The second auxilliary stream transmitting element is used for sending the auxilliary stream of this video terminal to MCU after described second identity is provided with the unit and this video terminal is set is auxilliary stream sender.
Video conferencing system of the present invention, wherein, described auxilliary stream sender selected cell further according to the video terminal request, when allowing this video terminal to send auxilliary stream, selects this video terminal as auxilliary stream sender.
Video conferencing system of the present invention, wherein, described secondary flow sender's selected cell is further used for cancelling current secondary flow sender, and sends cancellation secondary flow sender's message to the video terminal that will be cancelled the secondary flow sender.
Video conferencing system of the present invention, wherein, described chairman's terminal comprises that also first identity is provided with the unit and the first auxilliary stream transmitting element;
Described first identity is provided with the unit, is used for when described auxilliary stream sender selected cell is selected or cancelled this chairman terminal as auxilliary stream sender, is provided with or cancels this chairman terminal as auxilliary stream sender;
The described first secondary flow transmitting element, be used for after the described first identity setting unit arranges this chairman terminal and is the secondary flow sender, send the secondary flow of this chairman terminal to MCU, and the described first identity setting unit cancel this chairman terminal as the secondary flow sender after, stop to send the secondary flow of this chairman terminal.
Video conferencing system of the present invention, wherein, described chairman's terminal also comprises:
The first secondary flow token maintenance unit for the current secondary flow token keeper information of safeguarding according to MCU, is safeguarded the current secondary flow token keeper information of self; And be used for behind the response message that receives the message that agreement secondary flow that MCU returns sends, according to the selected video terminal of described secondary flow sender's selected cell, upgrading current secondary flow token keeper information; Behind the response message of the message that receives the cancellation secondary flow sender that MCU returns, upgrade current secondary flow token keeper for empty; And when described secondary flow sender's selected cell is selected this chairman terminal as the secondary flow sender, upgrade current secondary flow token keeper and be this chairman terminal.
Video conferencing system of the present invention, wherein,
The described second identity setting unit is further used for cancelling this video terminal as the secondary flow sender after the cancellation secondary flow sender's who receives message;
The described second secondary flow transmitting element, be further used for the described second identity setting unit cancel this video terminal as the secondary flow sender after, stop to send the secondary flow of this video terminal.
Video conferencing system of the present invention, wherein,
The described second identity setting unit is further used for the message according to the agreement secondary flow transmission that receives, and this video terminal is set as the secondary flow sender, and returns the response message of the message of described agreement secondary flow transmission to MCU; And according to the cancellation secondary flow sender's who receives message, cancel this video terminal as the secondary flow sender, and return the response message of described cancellation secondary flow sender's message to MCU.
Video conferencing system of the present invention, wherein, described MCU also comprises:
Described message processing unit is further used for the auxilliary stream of the cancellation sender's that chairman's terminal sends message, and is forwarded to corresponding video terminal, and the response message of the auxilliary stream of the cancellation sender's that sends of receiver, video terminal message, and is forwarded to chairman's terminal.
Video conferencing system of the present invention, wherein, described MCU also comprises:
The second secondary flow token maintenance unit is for the current secondary flow token keeper information of safeguarding video conference; And the response message of the message that sends of the agreement secondary flow that receives according to message processing unit, upgrade current secondary flow token keeper for sending the video terminal of described response message; The response message of the described cancellation secondary flow sender's who receives according to described message processing unit message upgrades current secondary flow token keeper for empty.
Described MCU of the present invention, wherein,
The described second secondary flow token maintenance unit is further used for after described secondary flow retransmission unit receives the secondary flow of chairman's terminal, upgrades current secondary flow token keeper and is chairman's terminal.
Video conferencing system of the present invention, wherein,
Described message processing unit is further used for current auxilliary stream token keeper to chairman's terminal, and when receiving the auxilliary stream of the cancellation sender's that chairman's terminal sends message, returns the response message of the auxilliary stream of cancellation sender's message to chairman;
The described second secondary flow token maintenance unit is further used for being chairman's terminal current secondary flow token keeper,
From the above as can be seen, auxilliary stream sends in the double-current video conference of a kind of token pattern provided by the invention control method, MCU, chairman's terminal and video terminal, when in video conference, having chairman's terminal, by chairman's terminal auxilliary stream transmission is controlled, thereby the control that will assist the stream sending permission is transferred on the terminal, having broken through only can be by the restriction of the auxilliary stream transmission of MCU control in the prior art, make the chairman to carry out actual demand in the process according to meeting, select suitable video terminal to issue auxilliary stream token, improved the flexibility that auxilliary stream sends control.And, among the present invention, safeguard current secondary flow token keeper information at the MCU place, the current secondary flow token keeper information that terminal can be safeguarded according to MCU after application chairman success is controlled the secondary flow sending permission; And, the present invention is further synchronous current secondary flow token keeper information between MCU and chairman's terminal also, so that after the chairman is released, MCU can be according to its secondary flow token keeper information of safeguarding, again control the secondary flow sending permission, thereby so that the secondary flow sending permission is under the control of MCU or chairman's terminal all the time, has avoided secondary flow to send and caused confusion.
Description of drawings
Fig. 1 is the connection diagram of video terminal;
Fig. 2 is the networking schematic diagram of video conference;
Fig. 3 is the application schematic diagram one of the control method of the described secondary flow transmission of the embodiment of the invention;
Fig. 4 is the application schematic diagram two of the control method of the described secondary flow transmission of the embodiment of the invention;
Fig. 5 is the application schematic diagram three of the control method of the described secondary flow transmission of the embodiment of the invention;
Fig. 6 is the application schematic diagram four of the control method of the described secondary flow transmission of the embodiment of the invention;
Fig. 7 is the application schematic diagram five of the control method of the described secondary flow transmission of the embodiment of the invention;
Fig. 8 is the application schematic diagram six of the control method of the described secondary flow transmission of the embodiment of the invention;
Fig. 9 is the application schematic diagram seven of the control method of the described secondary flow transmission of the embodiment of the invention;
Figure 10 is the application schematic diagram eight of the control method of the described secondary flow transmission of the embodiment of the invention;
Figure 11 is the structural representation of the described video terminal of the embodiment of the invention;
Figure 12 is the structural representation of the described MCU of the embodiment of the invention;
Figure 13 is the structural representation of the described chairman's terminal of the embodiment of the invention.
Embodiment
The invention provides auxilliary stream sends in a kind of double-current video conference of token pattern control method, MCU, chairman's terminal and video terminal, by the chairman's terminal in the video conference auxilliary stream transmission is controlled, auxilliary stream sends has broken through the constraint of only being controlled by MCU, has greater flexibility, simultaneously, also avoided owing to the confusion of token not being controlled the auxilliary stream sending permission that causes.
The main thought of the present invention is: because video terminal all is to adopt UI (user interface), the user can carry out control and management by UI to video terminal easily, therefore, the control of assisting the stream sending permission can be transferred on the video terminal, thereby be avoided the B/S structure of MCU to be difficult to the various demands that terminal in the conference process produces are made response.When having chairman's terminal in the video conference, MCU will assist the stream transmission route and be issued to chairman's terminal, and chairman's terminal is obtained auxilliary stream Token Control power, and auxilliary stream token is controlled by chairman's terminal; When not having chairman's terminal in the video conference, auxilliary stream token is controlled by MCU.Simultaneously, in order to guarantee that after chairman's terminal is cancelled MCU can normally realize the control to token, need to safeguard simultaneously current secondary flow token keeper information in MCU side and chairman's end side among the present invention, and need between the two to become synchronously consistent.The present invention is described in detail by specific embodiment below in conjunction with accompanying drawing.
Fig. 3～10 show respectively the present invention and how secondary flow are sent under different situations and control.In each figure, the message shown in the dotted line is response message.
At first, please refer to Fig. 3, the application of chairman's terminal and be released in H.245 in the agreement clear.Among the present invention, for the current auxilliary stream token keeper information between synchronous MCU and the chairman's terminal, after the chairman applies for success, MCU further gives chairman's terminal by sending " current auxilliary stream sender " message, its current auxilliary stream token keeper information of safeguarding is notified to chairman's terminal, chairman's terminal is upgraded the current auxilliary stream token keeper information of oneself according to this message.After this, the authority that secondary flow sends is by chairman's terminal control.During the terminal of serving as chair release Chair authority, because the MCU self maintained has current auxilliary stream token keeper information, therefore do not need chairman's terminal again to the current owner of a token information of MCU explanation, MCU can be to the current auxilliary stream token keeper information of safeguarding according to it, and the auxilliary stream of control sends.
As shown in Figure 4, video terminal A as the chairman, can be by the participant site list that himself keeps, select the video terminal in the meeting, such as video terminal B, as the secondary flow sender, at this moment, chairman's terminal A will send to MCU the message of " agreeing that the B secondary flow sends ", and MCU is transmitted to video terminal B with this message; After video terminal B receives this message, return response message by MCU to chairman's terminal; MCU and chairman's terminal are after receiving this response message, and the current secondary flow token keeper information of upgrading separately respectively is video terminal B.At this moment, video terminal B if start its secondary flow, is sent to MCU with its secondary flow, and MCU will transmit the secondary flow of video terminal B, and like this, other video terminals except video terminal B in the meeting will receive the secondary flow of video terminal B.
If chairman's terminal needs the current secondary flow sender in the cancellation of meeting, then send the message of " cancellation secondary flow sender " to MCU, MCU is transmitted to current secondary flow sender (video terminal B) with this message, video terminal B is after receiving this message, stopping its secondary flow sends, return a response message by MCU to chairman's terminal simultaneously, MCU and chairman's terminal are behind the response message of the message that receives this cancellation secondary flow sender, and the current secondary flow token keeper information of upgrading respectively separately is empty.
If there is not the secondary flow sender in current video conference, when certain video terminal wanted application to send secondary flow, its idiographic flow as shown in Figure 5 and Figure 6.Among Fig. 5 and Fig. 6, video terminal B application sends secondary flow, it sends the message of " the application secondary flow sends ", this application message is transmitted to chairman's terminal (video terminal A) by MCU, and chairman's terminal judges whether to allow video terminal B to send secondary flow after receiving this application message, if do not allow, then send the message (as shown in Figure 6) that refusal B secondary flow sends by MCU to video terminal B, like this, video terminal B will still can not send its secondary flow; If confirm to agree the application of video terminal B, then send the message (as shown in Figure 5) of " agreeing that the B secondary flow sends ", flow process thereafter is the same with Fig. 4, repeats no more.
If there has been the secondary flow sender in current video conference, the flow chart when other video terminal applications send secondary flow as shown in Figure 7.Among Fig. 7, had secondary flow sender video terminal C, at this moment, if video terminal B application sends secondary flow, the message that it has sent " the application secondary flow sends " is forwarded to chairman's terminal through MCU.At this moment, if chairman's terminal is agreed B and is sent auxilliary stream, then chairman's terminal is at first cancelled current auxilliary stream sender: chairman's terminal sends the message of " the auxilliary stream of cancellation sender " and gives MCU, and MCU gives video terminal C with this forwards, and video terminal C stops its auxilliary stream subsequently and sends; Then, chairman's terminal is given terminal B via the message that MCU sends " agreeing that B sends auxilliary stream " again, and flow process is the same with Fig. 4 thereafter, repeats no more.
If a plurality of video terminals ask to send auxilliary stream simultaneously, at this moment, corresponding handling process as shown in Figure 8.Among Fig. 8, video terminal B and C send to chairman's terminal (video terminal A) application secondary flow simultaneously.At this moment, chairman's terminal can be selected one of them terminal according to predetermined policy, as video terminal B, sends auxilliary stream.So chairman's terminal sends the message of " agreeing the transmission of B secondary flow " by the message of MCU to video terminal C transmission " refusal C secondary flow sends " to video terminal B., MCU and chairman's terminal are updated to " video terminal B " with auxilliary stream token keeper separately behind the response message of the message of receiving " agreeing that the auxilliary stream of B sends ".Thereby video terminal B can send its auxilliary stream by MCU.Here, if when a plurality of video terminals ask to send auxilliary stream simultaneously, current other video terminals that existed send auxilliary stream in the video conference, at this moment, chairman's terminal can be refused the request of described a plurality of video terminals, also can select one of them video terminal as new auxilliary stream sender.When selecting a new video as new auxilliary stream sender, chairman's terminal at first needs to cancel current auxilliary stream sender, and its flow process can be handled with reference to figure 7, repeats no more herein.
In video conference, video terminal may leave meeting, and for example, video terminal can pass through to hang up automatically and withdraws from meeting, also might be because network disconnection, device powers down etc. are former thereby leave meeting.According to prior art, MCU can detect the video terminal that leaves meeting, if leave the video terminal of meeting is current auxilliary stream sender, the handling process of this moment as shown in Figure 9, MCU is when detecting current auxilliary stream sender and leave video conference, MCU upgrades its current auxilliary stream token keeper who safeguards for empty, and to " current auxilliary stream sender " message of chairman's terminal (video terminal A) transmission, carry current not auxilliary stream sender's information in this message, like this, the current auxilliary stream token keeper information that chairman's terminal promptly can it be safeguarded according to this information updating.
Below all be the secondary flow transmission control explanation the present invention with other outer video terminals of chairman's terminal, the flow process when shown in Figure 10 is chairman's terminal transmission secondary flow.Current when not having the secondary flow sender in video conference, chairman's terminal can start voluntarily secondary flow and send, and to upgrade its current secondary flow token keeper information of safeguarding be chairman's terminal, MCU upgrades its current secondary flow token keeper who safeguards and is chairman's terminal after the secondary flow that receives from chairman's terminal.If currently in the video conference had other secondary flows sender, then chairman's terminal must send earlier the message of " cancellation secondary flow sender ", and the secondary flow token in the meeting is put sky, and then starts secondary flow and send.When chairman's terminal stops the secondary flow transmission of self at needs, at first send the message of " cancellation secondary flow sender " to MCU, MCU judges that current secondary flow sender is chairman's terminal, then directly returns response message to chairman's terminal, and upgrades its current secondary flow token keeper information of safeguarding for empty.Chairman upgrades its current secondary flow token keeper information of safeguarding for empty behind the response message of the message that receives described cancellation secondary flow sender then.
The application of the method for the invention under varying environment below has been described respectively.Based on said method, as Figure 11, Figure 12 and shown in Figure 13, the present invention also provides a kind of video terminal, MCU and chairman's terminal respectively,
Wherein, as shown in figure 11, described video terminal comprises:
The identity setting unit is used for this video terminal being set as the secondary flow sender after receiving the message of agreeing the secondary flow transmission.Here, described identity setting unit can also be further used for cancelling this video terminal as the secondary flow sender after the cancellation secondary flow sender's who receives message; And according to the message that the agreement secondary flow from chairman's terminal that receives sends, this video terminal is set as the secondary flow sender, and return the response message of the message of described agreement secondary flow transmission to MCU; And according to the message from the cancellation secondary flow sender of chairman's terminal that receives, cancel this video terminal as the secondary flow sender, and return the response message of described cancellation secondary flow sender's message to MCU.
Auxilliary stream transmitting element is used for sending the auxilliary stream of this video terminal to MCU after described identity is provided with the unit and this video terminal is set is auxilliary stream sender.Here, described secondary flow transmitting element, be further used for described identity setting unit cancel this video terminal as the secondary flow sender after, stop to send the secondary flow of this video terminal.
Wherein, as shown in figure 12, described MCU comprises:
Secondary flow Token Control power issues the unit, is used for secondary flow Token Control power is issued to chairman's terminal;
Secondary flow token maintenance unit, be used for safeguarding the current secondary flow sender information of video conference, and the response message of the message that sends of the agreement secondary flow that receives according to message processing unit, upgrade current secondary flow token keeper for sending the video terminal of described response message.Here, described secondary flow token maintenance unit is further used for the response message of the described cancellation secondary flow sender's that receives according to described message processing unit message, upgrades current secondary flow token keeper for empty; And be used for after the secondary flow retransmission unit receives the secondary flow of chairman's terminal, upgrade current secondary flow token keeper and be chairman's terminal, and to be used for current secondary flow sender be chairman's terminal, and when receiving the cancellation secondary flow sender's that chairman's terminal sends message, upgrade current secondary flow token keeper for empty.
Message processing unit be used for to receive the message that agreement secondary flow that chairman's terminal sends sends, and is forwarded to corresponding video terminal, and the response message of the message that sends of the agreement secondary flow returned of receiver, video terminal, and is forwarded to chairman's terminal.Here, described message processing unit is further used for the auxilliary stream of the cancellation sender's of chairman's terminal transmission message, and is forwarded to corresponding video terminal, and the response message of the auxilliary stream of the cancellation sender's of receiver, video terminal transmission message, and be forwarded to chairman's terminal; And be used for current auxilliary stream token keeper for chairman's terminal, and when receiving the auxilliary stream of the cancellation sender's that chairman's terminal sends message, return the response message of the auxilliary stream of cancellation sender's message to chairman.
The auxilliary bill unit that circulates is used to receive the auxilliary stream that current auxilliary stream sender sends, and is forwarded to the video terminal except that current auxilliary stream sender in the video conference.
Wherein, as shown in figure 13, described chairman's terminal comprises:
Secondary flow sender's selected cell is used for obtaining secondary flow Token Control power, selects video terminal in the video conference as the secondary flow sender, and sends the message of agreeing that secondary flow sends to selecteed video terminal; And cancel current secondary flow sender, and send cancellation secondary flow sender's message to the secondary flow sender who will be cancelled.Here, described secondary flow sender's selected cell can also further according to the video terminal request, when allowing this video terminal to send secondary flow, select this video terminal as the secondary flow sender.
Secondary flow token maintenance unit for the current secondary flow token keeper information of safeguarding according to MCU, is safeguarded the current secondary flow token keeper information of self; And be used for behind the response message that receives the message that agreement secondary flow that MCU returns sends, according to the selected video terminal of described secondary flow sender's selected cell, upgrading current secondary flow token keeper information; Behind the response message of the message that receives the cancellation secondary flow sender that MCU returns, upgrade current secondary flow token keeper for empty.Here, described secondary flow token maintenance unit can also be further used for leaving according to the current secondary flow sender that MCU sends the information of video conference, upgrades its current secondary flow token keeper who safeguards for empty.Described secondary flow token maintenance unit can also be further used for when described secondary flow sender's selected cell is selected this chairman terminal as the secondary flow sender, upgrades current secondary flow sender and is this chairman terminal.
Identity is provided with the unit, is used for when described auxilliary stream sender selected cell is selected or cancelled this chairman terminal as auxilliary stream sender, is provided with or cancels this chairman terminal as auxilliary stream sender.
The secondary flow transmitting element, be used for after described identity setting unit arranges this chairman terminal and is the secondary flow sender, send the secondary flow of this chairman terminal to MCU, and described identity setting unit cancel this chairman terminal as the secondary flow sender after, stop to send the secondary flow of this chairman terminal.
In sum, auxilliary stream sends in the double-current video conference of the described a kind of token pattern of the embodiment of the invention control method, MCU, chairman's terminal and video terminal, when in video conference, having chairman's terminal, by chairman's terminal auxilliary stream transmission is controlled, thereby broken through in the prior art and only can improve the flexibility that auxilliary stream sends control by the restriction of the auxilliary stream transmission of MCU control.
Secondary flow sends in the double-current video conference of a kind of token pattern of the present invention control method, MCU and video terminal, be not restricted to listed utilization in specification and the embodiment, it can be applied to various suitable the present invention's field fully, for those skilled in the art, can easily realize additional advantage and make amendment, therefore in the situation of the spirit and scope that do not deviate from the universal that claim and equivalency range limit, the present invention is not limited to specific details, representational equipment and illustrates here and the examples shown of describing.
Claims (23)
1. the control method that secondary flow sends in the double-current video conference of a token pattern is characterized in that,
Multipoint control unit MCU is issued to chairman's terminal with secondary flow Token Control power;
Chairman's terminal is obtained secondary flow Token Control power, selects video terminal in the video conference as the secondary flow sender, and sends the message of agreeing that secondary flow sends to selecteed video terminal by MCU;
Described selecteed video terminal arranges this video terminal as the secondary flow sender according to the message that the agreement secondary flow that receives sends, and returns response message by MCU to chairman's terminal, and sends the secondary flow of this video terminal to MCU;
MCU and chairman's terminal are behind the response message of the message that receives described agreement secondary flow transmission, and the current secondary flow token keeper information of upgrading separately respectively is described selecteed video terminal.
2. control method as claimed in claim 1 is characterized in that, described chairman's terminal when allowing this video terminal to send auxilliary stream, selects this video terminal as auxilliary stream sender further according to the video terminal request.
3. control method as claimed in claim 1 is characterized in that, described chairman's terminal is further cancelled the current secondary flow sender in the video conference, and sends cancellation secondary flow sender's message to the video terminal that will be cancelled the secondary flow sender by MCU; Video terminal further according to the cancellation secondary flow sender's who receives message, is cancelled this video terminal as the secondary flow sender, and is stopped to send the secondary flow of this video terminal.
4. control method as claimed in claim 3 is characterized in that, when not having the secondary flow sender in the current video meeting, chairman's terminal directly selects described video terminal as the secondary flow sender; When in the current video meeting, having the secondary flow sender, behind the current secondary flow sender of chairman's terminal in the cancellation video conference, select again described video terminal as the secondary flow sender.
5. control method as claimed in claim 3, it is characterized in that, described chairman's terminal is after its application chairman success, and the further current auxilliary stream token keeper information of being safeguarded according to multipoint control unit MCU is safeguarded oneself current auxilliary stream token keeper information.
6. control method as claimed in claim 5 is characterized in that,
Chairman's terminal further behind the response message of the message that receives described cancellation secondary flow sender, is upgraded its current secondary flow token keeper who safeguards for empty.
7. control method as claimed in claim 5 is characterized in that,
Chairman's terminal is further selected own to the secondary flow sender, and upgrades its current secondary flow token keeper who safeguards and be chairman's terminal, and its secondary flow is sent to MCU;
And chairman's terminal is when oneself is the secondary flow sender, further send cancellation secondary flow sender's message to MCU, behind the response message of the message that receives this cancellation secondary flow sender, cancellation is own to the secondary flow sender, stop to send secondary flow, and upgrade its current secondary flow token keeper who safeguards for empty.
8. control method as claimed in claim 1 is characterized in that,
MCU receives the message that agreement secondary flow that chairman's terminal sends sends, and is forwarded to corresponding video terminal, and the response message of the message that sends of the agreement secondary flow returned of receiver, video terminal, and is forwarded to chairman's terminal; MCU receives the secondary flow that the secondary flow sender sends, and is forwarded to other video terminal except this secondary flow sender.
9. control method as claimed in claim 8 is characterized in that, described MCU further receives the cancellation secondary flow sender's of chairman's terminal transmission message, and is forwarded to corresponding video terminal; And, the response message of the cancellation secondary flow sender's that the receiver, video terminal sends message, and be forwarded to chairman's terminal.
10. control method as claimed in claim 9 is characterized in that,
MCU safeguards current secondary flow token keeper information, and after the chairman in video conference was released, MCU was according to its current secondary flow token keeper information of safeguarding, the control secondary flow sends;
Behind the response message of the message that the agreement secondary flow that receives described video terminal transmission sends, MCU further upgrades its current secondary flow token keeper who safeguards for sending the video terminal of this response message;
Behind the response message of the message that receives the cancellation secondary flow sender that video terminal sends, MCU further upgrades its current secondary flow token keeper who safeguards for empty.
11. control method as claimed in claim 10 is characterized in that, MCU is further used for after the secondary flow that receives chairman's terminal, upgrades its current secondary flow token keeper who safeguards and is chairman's terminal; And be chairman's terminal current secondary flow sender, and when receiving the cancellation secondary flow sender's that chairman's terminal sends message, upgrade current secondary flow sender for empty.
12. control method as claimed in claim 10 is characterized in that,
MCU upgrades its current secondary flow token keeper who safeguards for empty, and notifies chairman's terminal to upgrade current secondary flow token keeper information after detecting current secondary flow sender and leaving video conference.
13. a video conferencing system is characterized in that, comprises multipoint control unit MCU, chairman's terminal and video terminal;
Wherein said MCU comprises:
Secondary flow Token Control power issues the unit, is used for secondary flow Token Control power is issued to chairman's terminal;
Message processing unit be used for to receive the message that agreement secondary flow that chairman's terminal sends sends, and is forwarded to corresponding video terminal, and the response message of the message that sends of the agreement secondary flow returned of receiver, video terminal, and is forwarded to chairman's terminal;
The auxilliary bill unit that circulates is used to receive the auxilliary stream that current auxilliary stream sender sends, and is forwarded to the video terminal except that current auxilliary stream sender in the video conference;
Wherein said chairman's terminal comprises:
Secondary flow sender's selected cell is used for obtaining secondary flow Token Control power, selects video terminal in the video conference as the secondary flow sender, and sends the message of agreeing that secondary flow sends to selecteed video terminal;
Wherein said video terminal comprises:
The second identity setting unit is used for this video terminal being set as the secondary flow sender after receiving the message of agreeing the secondary flow transmission;
The second auxilliary stream transmitting element is used for sending the auxilliary stream of this video terminal to MCU after described second identity is provided with the unit and this video terminal is set is auxilliary stream sender.
14. video conferencing system as claimed in claim 13 is characterized in that, described auxilliary stream sender selected cell further according to the video terminal request, when allowing this video terminal to send auxilliary stream, selects this video terminal as auxilliary stream sender.
15. video conferencing system as claimed in claim 13 is characterized in that, described secondary flow sender's selected cell is further used for cancelling current secondary flow sender, and sends cancellation secondary flow sender's message to the video terminal that will be cancelled the secondary flow sender.
16. video conferencing system as claimed in claim 15 is characterized in that, described chairman's terminal comprises that also first identity is provided with the unit and the first auxilliary stream transmitting element;
Described first identity is provided with the unit, is used for when described auxilliary stream sender selected cell is selected or cancelled this chairman terminal as auxilliary stream sender, is provided with or cancels this chairman terminal as auxilliary stream sender;
The described first secondary flow transmitting element, be used for after the described first identity setting unit arranges this chairman terminal and is the secondary flow sender, send the secondary flow of this chairman terminal to MCU, and the described first identity setting unit cancel this chairman terminal as the secondary flow sender after, stop to send the secondary flow of this chairman terminal.
17. video conferencing system as claimed in claim 16 is characterized in that, described chairman's terminal also comprises:
The first secondary flow token maintenance unit for the current secondary flow token keeper information of safeguarding according to MCU, is safeguarded the current secondary flow token keeper information of self; And be used for behind the response message that receives the message that agreement secondary flow that MCU returns sends, according to the selected video terminal of described secondary flow sender's selected cell, upgrading current secondary flow token keeper information; Behind the response message of the message that receives the cancellation secondary flow sender that MCU returns, upgrade current secondary flow token keeper for empty; And when described secondary flow sender's selected cell is selected this chairman terminal as the secondary flow sender, upgrade current secondary flow token keeper and be this chairman terminal.
18. video conferencing system as claimed in claim 13 is characterized in that,
The described second identity setting unit is further used for cancelling this video terminal as the secondary flow sender after the cancellation secondary flow sender's who receives message;
The described second secondary flow transmitting element, be further used for the described second identity setting unit cancel this video terminal as the secondary flow sender after, stop to send the secondary flow of this video terminal.
19. video conferencing system as claimed in claim 18 is characterized in that,
The described second identity setting unit is further used for the message according to the agreement secondary flow transmission that receives, and this video terminal is set as the secondary flow sender, and returns the response message of the message of described agreement secondary flow transmission to MCU; And according to the cancellation secondary flow sender's who receives message, cancel this video terminal as the secondary flow sender, and return the response message of described cancellation secondary flow sender's message to MCU.
20. video conferencing system as claimed in claim 19 is characterized in that, described MCU also comprises:
Described message processing unit is further used for the auxilliary stream of the cancellation sender's that chairman's terminal sends message, and is forwarded to corresponding video terminal, and the response message of the auxilliary stream of the cancellation sender's that sends of receiver, video terminal message, and is forwarded to chairman's terminal.
21. video conferencing system as claimed in claim 20 is characterized in that, described MCU also comprises:
The second secondary flow token maintenance unit is for the current secondary flow token keeper information of safeguarding video conference; And the response message of the message that sends of the agreement secondary flow that receives according to message processing unit, upgrade current secondary flow token keeper for sending the video terminal of described response message; The response message of the described cancellation secondary flow sender's who receives according to described message processing unit message upgrades current secondary flow token keeper for empty.
22. video conferencing system as claimed in claim 21 is characterized in that,
The described second secondary flow token maintenance unit is further used for after described secondary flow retransmission unit receives the secondary flow of chairman's terminal, upgrades current secondary flow token keeper and is chairman's terminal.
23. video conferencing system as claimed in claim 22 is characterized in that,
Described message processing unit is further used for current auxilliary stream token keeper to chairman's terminal, and when receiving the auxilliary stream of the cancellation sender's that chairman's terminal sends message, returns the response message of the auxilliary stream of cancellation sender's message to chairman;
The described second secondary flow token maintenance unit is further used for current secondary flow token keeper to chairman's terminal, and when receiving the cancellation secondary flow sender's that chairman's terminal sends message, upgrades current secondary flow token keeper for empty.
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| CN2007101214756A CN101115183B (en) | 2007-09-06 | 2007-09-06 | Auxiliary stream transmission control method, MCU, chairman terminal and video terminal |
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| CN2007101214756A CN101115183B (en) | 2007-09-06 | 2007-09-06 | Auxiliary stream transmission control method, MCU, chairman terminal and video terminal |
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| CN101115183B true CN101115183B (en) | 2011-06-01 |
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| CN101459816B (en) | 2007-12-14 | 2015-09-09 | 华为终端有限公司 | A kind of method of controlling auxiliary stream token in multi-point bi-stream conference, system and equipment |
| CN101262588B (en) * | 2008-04-01 | 2010-06-02 | 中国联合网络通信集团有限公司 | A method and system for mandatory control over auxiliary stream of video network |
| CN101635822B (en) * | 2008-07-26 | 2012-03-07 | 中兴通讯股份有限公司 | Method for realizing double stream automatic transmission of conference television terminal |
| CN101662642B (en) * | 2008-08-26 | 2011-11-30 | 中兴通讯股份有限公司 | Method for directly introducing real-time monitoring images into video conference |
| CN101686375B (en) * | 2008-09-24 | 2011-11-30 | 中兴通讯股份有限公司 | Method and device for managing conference control right in video conference |
| CN101370115A (en) * | 2008-10-20 | 2009-02-18 | 深圳华为通信技术有限公司 | Conference terminal, conference server, conference system and data processing method |
| CN101557496B (en) * | 2009-04-30 | 2010-10-13 | 华中科技大学 | Built-in video conference cooperative operation system |
| CN102572367B (en) * | 2010-12-07 | 2014-09-03 | 华为终端有限公司 | Multiple auxiliary stream control method, device and network system |
| CN102123268A (en) * | 2011-03-15 | 2011-07-13 | 深圳市捷视飞通科技有限公司 | Video conference terminal and system |
| CN102123267A (en) * | 2011-03-15 | 2011-07-13 | 深圳市捷视飞通科技有限公司 | Method, device and system for interactively modifying auxiliary stream of video conference |
| CN102387340B (en) * | 2011-11-29 | 2014-12-24 | 浙江省电力公司 | Control system and realization method for video session |
| CN102595095A (en) * | 2011-12-09 | 2012-07-18 | 中兴通讯股份有限公司 | Method and device for achieving dual-streaming video conferences |
| CN104980686A (en) * | 2015-06-26 | 2015-10-14 | 广东亿迅科技有限公司 | Method for controlling scenes in video conference |
| CN108322693B (en) * | 2018-03-01 | 2021-03-02 | 上海创视通软件技术有限公司 | Method and system for controlling auxiliary stream of third-party terminal by MCU (microprogrammed control Unit) terminal |
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