CN101110939A - Method for multi-picture control in cascade connection conference television system - Google Patents
Method for multi-picture control in cascade connection conference television system Download PDFInfo
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Abstract
The present invention discloses a method for controlling the multi-picture of a cascading meeting television system, which comprises the following procedures: if the preside meeting place is on the main MCU, the multi-picture setting message is sent to the main MCU by the preside meeting place; if the preside meeting place is on the secondary MCU, the multi-picture setting message is sent to the secondary MCU by the preside meeting place, and the secondary MCU forwards the message to the main MCU; the MCU sets the meeting into a multi-picture mode; and the MCU broadcasts a multi-picture video according to the control mode of the meeting. The present invention redeems the default of the ITU-T standard that the cascading meeting television system has no multi-picture control, and the multi-picture can be set and the multi-picture video can be broadcasted in the cascading meeting television system.
Description
Technical field
The invention belongs to the video conferencing field, relate in particular to a kind of method of many picture controls in the TV conference system of cascade.
Background technology
Subtended conference is a kind of basic application in the TV conference system, in the ITU-T standard, how to carry out level and be associated with preferably and describe at MCU (Multi ControlUnit multipoint control unit), and defined a cover more detailed about the MCU cascade time conference control method (please refer to ITU-T H.245 " Control protocol for multimedia communication ").In the meeting of single-image, these conference control methods are more complete.But in the subtended conference of many pictures, how to carry out meeting control, the ITU-T standard does not have clear and definite description.In the standards meetings control method, do not relate to how to carry out many picture controls under the cascade system at present.And many pictures application are a kind of more common application of TV conference system, and therefore, can't carry out many pictures controls in the TV conference system of cascade is shortcomings that prior art exists.
Summary of the invention
Therefore technical problem to be solved by this invention provides a kind of in the subtended conference of many pictures, carry out the method for the setting of many pictures and many picture videos broadcasting, this method can solve the problem that can't carry out many picture controls in the TV conference system of cascade that exists in the prior art.
The present invention specifically is achieved in that
A kind of method of many picture controls in cascade connection conference television system is characterized in that this method comprises the steps: that Chair site sends many pictures message is set; The MCU meeting is set to many image modes; MCU carries out many picture video broadcasting according to the conference control party formula.
Press such scheme, Chair site sends many pictures and message is set further comprises: if Chair site on main MCU, Chair site is provided with message to many pictures and sends to main MCU; If Chair site is from MCU, Chair site is provided with message to many pictures and sends to from MCU, gives main MCU this forwards from MCU.
Press such scheme, after the MCU meeting was set to many image modes and comprises the steps: that main MCU receives that many pictures are provided with message, meeting was set to many image modes; Main MCU transmits many pictures to each from MCU message is set; After receiving that from MCU many pictures that main MCU transmits are provided with message, meeting is set to many image modes.
Press such scheme, described conference control party formula is director's control mode or chairman's control mode or sound control mode.
Press such scheme, MCU carries out many picture video broadcasting according to director's control mode and comprises the steps: that if main MCU directs broadcasting, the meeting field picture that main MCU will be directed is synthesized in many pictures; If direct broadcasting from MCU, the meeting-place image switching that will be directed from MCU sends the message of request broadcasting oneself then to cascade port to main MCU, after main MCU receives this message, the image of cascade port is synthesized in many pictures; Main these many pictures of MCU broadcasting.
Press such scheme, MCU carry out according to chairman's control mode that the broadcasting of many picture videos comprises the steps: if Chair site on main MCU, Chair site sends the video broadcasting order to main MCU; After main MCU receives the video broadcasting order, judge according to terminal iidentification value wherein; If the person of being broadcasted is on this landlord MCU, main MCU is synthesized to the person's of being broadcasted image in many pictures, and transmits the video broadcasting order to each from MCU, and each is broadcasted the image of cascade port from MCU; If the person of being broadcasted is not on this landlord MCU, main MCU is according to the terminal iidentification value in the video broadcasting order, corresponding image from the MCU cascade port is synthesized to many pictures, and transmit the video broadcasting order to each from MCU, receive the video broadcasting order from MCU after, judge according to terminal iidentification value wherein, if the person of being broadcasted at this from MCU, then will the person's of being broadcasted image switching to cascade port, if the person of being broadcasted not at this from MCU, then the image of cascade port is broadcasted.
Press such scheme, MCU carry out according to chairman's control mode that the broadcasting of many picture videos comprises the steps: if Chair site from MCU, Chair site is to send the video broadcasting order from MCU; After receiving the video broadcasting order from MCU, judge according to terminal iidentification value wherein; If the person of being broadcasted in this locality from MCU, from MCU will the person's of being broadcasted image switching to cascade port, and transmit the video broadcasting order to main MCU; If the person of being broadcasted not in this locality from MCU, transmit the video broadcasting order from MCU to main MCU; After main MCU receives the video broadcasting order, judge according to terminal iidentification value wherein; If the person of being broadcasted is on main MCU, main MCU is synthesized to the person's of being broadcasted image in many pictures; If the person of being broadcasted is not on main MCU, main MCU is synthesized to corresponding image from the MCU cascade port many pictures according to the terminal iidentification value in the video broadcasting order; Main MCU to except that local from MCU other each from MCU forwarding video broadcasting order; Except that local from MCU other each receive the video broadcasting order from MCU after, judge according to terminal iidentification value wherein; If the person of being broadcasted at this from MCU, then will the person's of being broadcasted image switching to cascade port; If the person of being broadcasted not at this from MCU, then the image of cascade port is broadcasted.
Press such scheme, MCU carries out many picture video broadcasting according to the sound control mode and comprises the steps: that main MCU is synthesized to the image in corresponding meeting-place in many pictures if main MCU receives the maximum acoustic indication; If receive the maximum acoustic indication from MCU, the image in corresponding meeting-place be synthesized to many pictures from MCU; If main MCU and do not receive maximum acoustic indication from MCU then directly finishes.
Owing to adopted above-mentioned treatment step, the present invention compared with prior art has the following advantages:
The present invention has remedied in the ITU-T standard about can't carry out the defective of many pictures controls in the TV conference system of cascade, and method provided by the invention can be controlled the many pictures in the cascade connection conference television system well.
Description of drawings
Fig. 1 is the networking diagram of cascade meeting of the present invention;
Fig. 2 is the flow chart that Chair site is provided with many pictures among the present invention;
Fig. 3 directs many picture videos broadcasting flow charts under the control mode among the present invention;
Fig. 4 is the many picture videos broadcasting flow charts of Chair site on main MCU under chairman's control mode among the present invention;
Fig. 5 be among the present invention under chairman's control mode Chair site at the broadcasting of the many picture videos from MCU flow charts.
Fig. 6 is many picture videos broadcasting flow charts under the sound control mode among the present invention.
Embodiment
Below in conjunction with accompanying drawing specific implementation process of the present invention is further described:
The networking diagram of subtended conference the invention describes in the subtended conference as shown in Figure 1, main MCU (Multi Control Unit multipoint control unit) and from the control method of the many pictures between the MCU.In the present invention, the control method of many pictures is to carry out carrying out many picture video broadcasting after many pictures are provided with.The setting of many pictures is meant and is guaranteeing the many image modes of use under main MCU and the prerequisite all consistent from MCU; Many picture video broadcasting are meant under the situation of cascade, carry out video broadcasting, in the present invention for guarantee main meeting with see from meeting visual consistent, many picture images of main MCU broadcasting are all seen in all meeting-place, when MCU will carry out video broadcasting, from MCU earlier the image switching of local meeting-place to cascade port, main then MCU is responsible for the image of this cascade port is synthesized in many pictures.
Basic operation is as follows:
One, many pictures setting
1, in the present invention, have only main MCU that many image modes can be set.After many image modes of main meeting are provided with successfully, send many pictures to each from meeting message be set, receive this message from MCU after, will oneself be arranged to many image modes.
2, Chair site can ask to be provided with many image modes.Serve as chair the meeting-place on main MCU the time, and Chair site sends to main MCU to request message, and main MCU is arranged to many image modes to meeting; Serve as chair the meeting-place from MCU the time, and Chair site sends to request message from MCU, gives main MCU from MCU with this forwards, and main MCU is arranged to many image modes to meeting.
3, other non-Chair sites cannot be provided with many image modes.
Two, many picture video broadcasting
The H.243 agreement of ITU-T and H.245 protocol description three kinds of basic conference control party formulas, i.e. director control, chairman's control, sound control are independently to concern between these three kinds of conference control party formulas.Be described in respectively below under these three kinds of conference control party formulas, how handle the video broadcasting of many pictures.
1) director's control
When 1, main MCU directed broadcasting, the meeting field picture that main MCU will be directed was synthesized in many pictures, broadcasts away then.
2, direct when broadcasting from MCU, the meeting-place image switching that will be directed from MCU is to cascade port, and then sends the message of request broadcasting oneself to main MCU, after main MCU receives this message, this image from MCU is synthesized to many pictures, broadcasts away then.
2) Chair site control
1, main MCU receives VCB (the Video Command Broadcast video broadcasting order of Chair site, please refer to ITU-T H.230 " Frame-synchronous control and indication signals foraudiovisual systems ") time, judge according to the TerminalLabel in the VCB message (terminal iidentification) value, if be broadcasted the meeting-place in this locality, then directly carry out video broadcasting, the image that is broadcasted the meeting-place is synthesized to many pictures.Otherwise, the cascade port that main MCU will be broadcasted the place, meeting-place is synthesized in many pictures, then VCB is forwarded to accordingly from MCU, receive the VCB message of main MCU from MCU after, according to the TerminalLabel value in the VCB message with the image switching in corresponding meeting-place to main MCU cascade port.
2, when MCU receives the VCB of Chair site, judge according to the TerminalLabel value in the VCB message, if be broadcasted the meeting-place in this locality, then with the image switching in corresponding meeting-place to cascade port, send VCB message to main MCU then, after main MCU receives VCB message, the image of this cascade port is synthesized in many pictures.
3) sound control
1, after main MCU receives the maximum acoustic indication in a certain meeting-place (or a certain cascade port), the image of this meeting-place (perhaps cascade port) is synthesized in many pictures.
2, receive the maximum acoustic indication in a certain meeting-place from MCU after, the image in this meeting-place is synthesized in many pictures.
The specific implementation process:
One, many pictures setting
As shown in Figure 2, that the specific implementation process of many pictures is set is as follows in the Chair site request.
1, suppose Chair site on main MCU, Chair site sends the message that many pictures are set to main MCU.Suppose Chair site from MCU, forwarded for the 5th step to.
2, after main MCU receives the message that many pictures are set, many pictures are arranged in meeting.
3, main MCU sends the message that many pictures are set to each from MCU.
4, receive that from MCU main MCU is provided with the message of many pictures after, many image modes are arranged in meeting, many pictures are provided with flow process to be finished.
5, Chair site is to send the message that many pictures are set from MCU.
6, the forwards of many pictures will be set to main MCU from MCU.
7, forwarded for the 2nd step to.
Two, many picture video broadcasting
1) director's control
As shown in Figure 3, the specific implementation process of many picture video broadcasting is as follows under director's control mode.
If 1 this locality is main MCU, then continues to handle, otherwise forwarded for the 3rd step to.
2, the meeting field picture that will be directed of main MCU is synthesized in many pictures, main MCU broadcasting this many pictures, flow process end.
3, the meeting-place image switching that will be directed from MCU is to cascade port.
4, send the message of request broadcasting oneself to main MCU from MCU.
5, main MCU receives after the own message of the request of MCU broadcasting, and the image of this cascade port is synthesized in many pictures, main these many pictures of MCU broadcasting, flow process end.
2) chairman's control
As Fig. 4, shown in Figure 5, the specific implementation process of many picture video broadcasting is as follows under chairman's control mode.
If 1 Chair site on main MCU, then continues to handle, otherwise, forwarded for the 6th step to.
2, Chair site sends VCB to main MCU.
3, after main MCU receives VCB, judge according to the TerminalLabel among the VCB (terminal iidentification) value, if the person of being broadcasted is in this locality, then the person's of being broadcasted image is synthesized in many pictures, and transmit VCB message from MCU to each, each is broadcasted the image of cascade port from MCU, and flow process finishes.Otherwise continue.
4, main MCU is according to the value of TerminalLabel, and the image of cascade port is synthesized in many pictures.And VCB is forwarded to each from MCU.
5, receive the VCB of main MCU from MCU after, judge according to the TerminalLabel value, if the person of being broadcasted in this locality, then finds corresponding meeting-place according to the TerminalLabel value, and the image switching in this meeting-place to cascade port; Otherwise, the image of cascade port is broadcasted from MCU.Flow process finishes.
6, receive VCB message from MCU from Chair site.
7, judge according to the TerminalLabel value the VCB message from MCU, if the person of being broadcasted in this locality from MCU, then will the person's of being broadcasted image switching to cascade port, and transmit VCB message to main MCU; If the person of being broadcasted not in this locality, then directly transmits VCB message to main MCU.
8, main MCU receives after the VCB message of MCU, judge according to the TerminalLabel in the VCB message, if the person of being broadcasted is in main MCU this locality, image that then will the person of being broadcasted meeting-place is synthesized in many pictures, otherwise, corresponding image from the MCU cascade port is synthesized to many pictures according to the TerminalLabel value.
9, main MCU to except that receive VCB message from the MCU other each transmit VCB message from MCU; Receive judging respectively according to the TerminalLabel value of message from MCU, if the person of being broadcasted at this from MCU, then with the person's of being broadcasted image switching to cascade port, if the person of being broadcasted not at this from MCU, then the image of cascade port is broadcasted, flow process finishes.
3) sound control
As shown in Figure 6, the specific implementation process of many picture video broadcasting is as follows under the sound control mode.
If 1 main MCU receives the maximum acoustic indication, then continue; Otherwise forwarded for the 3rd step to.
2, main MCU is synthesized to the image in corresponding meeting-place in many pictures, and flow process finishes.
If 3 receive maximum acoustic indication from MCU, then continue; Otherwise flow process finishes.
4, from MCU the image in corresponding meeting-place is synthesized to many pictures, flow process finishes.
Claims (8)
1. the method for many picture controls in cascade connection conference television system is characterized in that this method comprises the steps:
1.1, Chair site sends many pictures message is set;
1.2, the MCU meeting is set to many image modes;
1.3, MCU carries out the broadcasting of many picture videos according to the conference control party formula.
2. the method for many picture controls in cascade connection conference television system as claimed in claim 1, it is characterized in that, described step 1.1 further comprises: if Chair site is on main MCU, Chair site is provided with message to many pictures and sends to main MCU: if Chair site is from MCU, Chair site is provided with message to many pictures and sends to from MCU, gives main MCU this forwards from MCU.
3. the method for many picture controls in cascade connection conference television system as claimed in claim 2 is characterized in that the MCU meeting is set to many image modes and comprises the steps:
3.1, after main MCU receives that many pictures are provided with message, meeting is set to many image modes;
3.2, main MCU transmits many pictures to each from MCU message is set;
3.3, receive that from MCU many pictures that main MCU transmits are provided with message after, meeting is set to many image modes.
4. as the method for claim 1 or 2 or 3 described many picture controls in cascade connection conference television system, it is characterized in that described conference control party formula is director's control mode or chairman's control mode or sound control mode.
5. the method for many picture controls in cascade connection conference television system as claimed in claim 4 is characterized in that, MCU carries out many picture video broadcasting according to director's control mode and comprises the steps:
If main MCU directs broadcasting, the meeting field picture that main MCU will be directed is synthesized in many pictures; If direct broadcasting from MCU, the meeting-place image switching that will be directed from MCU sends the message of request broadcasting oneself then to cascade port to main MCU, after main MCU receives this message, the image of cascade port is synthesized in many pictures;
Main these many pictures of MCU broadcasting.
6. the method for many picture controls in cascade connection conference television system as claimed in claim 4 is characterized in that, MCU carries out many picture video broadcasting according to chairman's control mode and comprises the steps:
If Chair site is on main MCU, Chair site sends the video broadcasting order to main MCU;
After main MCU receives the video broadcasting order, judge according to terminal iidentification value wherein;
If the person of being broadcasted is on this landlord MCU, main MCU is synthesized to the person's of being broadcasted image in many pictures, and transmits the video broadcasting order to each from MCU, and each is broadcasted the image of cascade port from MCU; If the person of being broadcasted is not on this landlord MCU, main MCU is according to the terminal iidentification value in the video broadcasting order, corresponding image from the MCU cascade port is synthesized to many pictures, and transmit the video broadcasting order to each from MCU, receive the video broadcasting order from MCU after, judge according to terminal iidentification value wherein, if the person of being broadcasted at this from MCU, then will the person's of being broadcasted image switching to cascade port, if the person of being broadcasted not at this from MCU, then the image of cascade port is broadcasted.
7. the method for many picture controls in cascade connection conference television system as claimed in claim 4 is characterized in that, MCU carries out many picture video broadcasting according to chairman's control mode and comprises the steps:
If Chair site is from MCU, Chair site is to send the video broadcasting order from MCU;
After receiving the video broadcasting order from MCU, judge according to terminal iidentification value wherein;
If the person of being broadcasted in this locality from MCU, from MCU will the person's of being broadcasted image switching to cascade port, and transmit the video broadcasting order to main MCU; If the person of being broadcasted not in this locality from MCU, transmit the video broadcasting order from MCU to main MCU;
After main MCU receives the video broadcasting order, judge according to terminal iidentification value wherein;
If the person of being broadcasted is on main MCU, main MCU is synthesized to the person's of being broadcasted image in many pictures; If the person of being broadcasted is not on main MCU, main MCU is synthesized to corresponding image from the MCU cascade port many pictures according to the terminal iidentification value in the video broadcasting order;
Main MCU to except that local from MCU other each from MCU forwarding video broadcasting order;
Except that local from MCU other each receive the video broadcasting order from MCU after, judge according to terminal iidentification value wherein;
If the person of being broadcasted at this from MCU, then will the person's of being broadcasted image switching to cascade port; If the person of being broadcasted not at this from MCU, then the image of cascade port is broadcasted.
8. the method for many picture controls in cascade connection conference television system as claimed in claim 4 is characterized in that, MCU carries out many picture video broadcasting according to the sound control mode and comprises the steps:
If main MCU receives the maximum acoustic indication, main MCU is synthesized to the image in corresponding meeting-place in many pictures;
If receive the maximum acoustic indication from MCU, the image in corresponding meeting-place be synthesized to many pictures from MCU;
If main MCU and do not receive maximum acoustic indication from MCU then directly finishes.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101951492A (en) * | 2010-09-15 | 2011-01-19 | 中兴通讯股份有限公司 | Method and device for recording videos in video call |
| 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 |
| CN102457702A (en) * | 2010-10-29 | 2012-05-16 | 华为终端有限公司 | Multi-picture processing method, device and system |
| WO2012062153A1 (en) * | 2010-11-08 | 2012-05-18 | 中兴通讯股份有限公司 | Method, system and mcu for achieving multipicture in cascade conference |
| CN102685415A (en) * | 2011-03-18 | 2012-09-19 | 华为终端有限公司 | Method, system, device and terminal for processing video picture |
| CN104469260A (en) * | 2014-12-24 | 2015-03-25 | 国家电网公司 | Multi-meeting system and control method thereof |
| CN106331584A (en) * | 2016-11-08 | 2017-01-11 | 安徽马钢自动化信息技术有限公司 | Method and system for jointly hosting meetings on multiple meeting places |
| WO2019242726A1 (en) * | 2018-06-22 | 2019-12-26 | 中兴通讯股份有限公司 | Conference control method and multipoint control unit |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
| CN101951492A (en) * | 2010-09-15 | 2011-01-19 | 中兴通讯股份有限公司 | Method and device for recording videos in video call |
| CN102457702A (en) * | 2010-10-29 | 2012-05-16 | 华为终端有限公司 | Multi-picture processing method, device and system |
| WO2012062153A1 (en) * | 2010-11-08 | 2012-05-18 | 中兴通讯股份有限公司 | Method, system and mcu for achieving multipicture in cascade conference |
| CN102685415A (en) * | 2011-03-18 | 2012-09-19 | 华为终端有限公司 | Method, system, device and terminal for processing video picture |
| CN104469260A (en) * | 2014-12-24 | 2015-03-25 | 国家电网公司 | Multi-meeting system and control method thereof |
| CN106331584A (en) * | 2016-11-08 | 2017-01-11 | 安徽马钢自动化信息技术有限公司 | Method and system for jointly hosting meetings on multiple meeting places |
| WO2019242726A1 (en) * | 2018-06-22 | 2019-12-26 | 中兴通讯股份有限公司 | Conference control method and multipoint control unit |
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