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WO2013010428A1 - Telepresence conference site control method and apparatus - Google Patents

Telepresence conference site control method and apparatus Download PDF

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Publication number
WO2013010428A1
WO2013010428A1 PCT/CN2012/077478 CN2012077478W WO2013010428A1 WO 2013010428 A1 WO2013010428 A1 WO 2013010428A1 CN 2012077478 W CN2012077478 W CN 2012077478W WO 2013010428 A1 WO2013010428 A1 WO 2013010428A1
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WO
WIPO (PCT)
Prior art keywords
site
mcu
control
message
multimedia
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2012/077478
Other languages
French (fr)
Chinese (zh)
Inventor
孙博
包明辉
李军
刘峥
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ZTE Corp
Original Assignee
ZTE Corp
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Filing date
Publication date
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Publication of WO2013010428A1 publication Critical patent/WO2013010428A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/40—Support for services or applications
    • H04L65/403—Arrangements for multi-party communication, e.g. for conferences
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/40—Support for services or applications
    • H04L65/403—Arrangements for multi-party communication, e.g. for conferences
    • H04L65/4038—Arrangements for multi-party communication, e.g. for conferences with floor control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/42—Systems providing special services or facilities to subscribers
    • H04M3/56—Arrangements for connecting several subscribers to a common circuit, i.e. affording conference facilities
    • H04M3/567—Multimedia conference systems

Definitions

  • Telepresence refers to a conference television system that enables an immersive presence of a participant. Compared with a conventional video conferencing system, the telepresence system can provide audio-visual recognition, life-size images, eye contact effects, and smoother. The movement and the precise physical behavior of the remote participants.
  • the telepresence system is different from the traditional conference TV. It usually has single screen, dual screen, three screens and multiple screens. Among them, the screen refers to the large display used to display the remote venue, and the screen contains a display. Each screen corresponds to one channel of sound and / or video media.
  • the telepresence system evolved from traditional conference TV. In actual use, most of the traditional conference TV control is controlled by the terminal.
  • the telepresence system realizes the control of the conference at the conference site, which can make the conference control simpler and improve the system. Ease of use.
  • the position information of the screen to be controlled cannot be specified in the H245 conference control message that is controlled by the site defined in the H323 protocol. If the site is directly applied to the telepresence system site, the telepresence system site is different from the original conference TV. At the venue, multiple channels of audio/video media need to be transmitted. Therefore, the original H245 conference control message of the H323 protocol cannot be used to control which audio/video media is controlled, so that the conference cannot control the conference.
  • the present invention provides a method and apparatus for controlling a venue of a telepresence system to solve at least the above problems.
  • a method for controlling a site of a remote presentation system including: receiving, by the MCU, a control message of a site of the remote presentation system, where the control message carries the multimedia to be controlled in the site where the control is located Position information; The MCU performs a control operation corresponding to the control message on the multimedia corresponding to the location information.
  • the control message of the MCU receiving the remote presentation system site includes: the first site sends the control message to its MCU; the MCU of the first site receives the control message, and determines that the control message requests control Whether the controlled site where the multimedia is located is the site of the MCU of the current level, and if so, the control operation is performed by the MCU of the first site; if not, the control message is transmitted to the site
  • the MCU of the controlled conference site receives the control message by the MCU of the controlled conference site, and the control operation is performed by the MCU of the controlled conference site.
  • the method further includes: The MCU of the conference site returns a first control response message to the first conference site, where the first control response message carries the result of the control operation; if the controlled conference site is not the first conference site After the MCU of the controlled site performs the control operation, the method further includes: the MCU of the controlled site to the first site The MCU returns a second control response message, where the second control response message carries the result of the control operation and the location information of the multimedia to be controlled in the site where it is located; The MCU receives the second control response message, and forwards the second control response message to the first site.
  • the second control response message is implemented by adding a field for indicating location information of the multimedia to be controlled in the site where the content is to be controlled, in the site control response message defined by the H245 protocol.
  • the control message is implemented by adding a field for indicating location information of the multimedia to be controlled in the site where the control is required in the site control message defined by the H245 protocol.
  • the control message includes: a remote presentation broadcast message; the MCU performing a control operation corresponding to the control message on the multimedia corresponding to the location information, including: the MCU searching for the remote presentation broadcast message request to be a site of the broadcast; the MCU determines whether the broadcasted site is a site of the MCU, and if yes, determines whether the broadcasted site includes multimedia corresponding to the location information, and if so, The multimedia corresponding to the location information is broadcasted to all the terminals of the conference; if the broadcasted conference site is the site of the lower-level MCU, the remote presentation broadcast message is delivered to the lower-level MCU, and the lower-level MCU determines the Whether the multimedia corresponding to the location information is included in the broadcasted conference site, and if so, the multimedia corresponding to the location information is broadcast to all terminals participating in the conference.
  • the MCU performing a control operation corresponding to the control message on the multimedia corresponding to the location information, including: the MCU searching for the remote presentation broadcast message request to
  • the control message includes: a remote presentation selection message, where the remote presentation selection message carries the destination location information of the selected conference site and the location information of the source multimedia selected to view the conference site; the MCU pair And performing, by the multimedia corresponding to the location information, the control operation corresponding to the control message, the MCU searching for the selected viewing site; and the MCU determining whether the selected viewing site is a site of the MCU of the current level, if If yes, it is determined whether the multimedia corresponding to the location information of the source multimedia is included in the selected viewing site, and if yes, the multimedia corresponding to the location information of the source multimedia is switched to correspond to the destination location information.
  • a control device for a remote presentation system site including: a receiving module, configured to receive a control message of a remote presentation system site, wherein the control message carries a multimedia that needs to be controlled The location information in the site; the execution module is configured to perform a control operation corresponding to the control message on the multimedia corresponding to the location information.
  • the device further includes: a response module, configured to return a control response message to the sender of the control message, where the control response message carries a result of the control operation, if the control message
  • the sender is the upper-level MCU
  • the control response message further carries the location information of the multimedia to be controlled in the site where the sender is located.
  • the control response message carrying the location information is implemented by adding a field set to indicate location information of the multimedia to be controlled in the site control response message defined by the H245 protocol.
  • the control message is implemented by adding a field set to indicate location information of the multimedia to be controlled in the site control message defined by the H245 protocol.
  • the location information of the multimedia to be controlled is carried in the control message of the remote presentation system site, so that the MCU can obtain the location of the multimedia to be controlled, thereby solving the original H245 conference control message using the H323 protocol.
  • the location of the audio/video media is controlled, so that the problem of the site control of the telepresence system cannot be realized, and thus the multimedia of different positions of the telepresence system can be controlled.
  • FIG. 1 is a flowchart of a method for controlling a site of a telepresence system according to an embodiment of the present invention
  • FIG. 2 is a schematic diagram of networking of a telepresence system according to an embodiment of the present invention
  • FIG. 4 is a flowchart of a multi-level MCU broadcast control of a telepresence system according to Embodiment 2 of the present invention
  • FIG. 1 is a flowchart of a method for controlling a site of a telepresence system according to an embodiment of the present invention
  • FIG. 2 is a schematic diagram of networking of a telepresence system according to an embodiment of the present invention
  • FIG. 4 is a flowchart of a multi-level MCU broadcast control of a telepresence system according to Embodiment 2 of the present invention
  • FIG. 1 is a flowchart of a method for controlling a site of a telepresence system according to an embodiment of the present invention
  • FIG. 2 is a schematic diagram of networking
  • FIG. 5 is a flowchart of single-stage MCU selection control according to Embodiment 3 of the present invention
  • FIG. 6 is a flowchart of multi-level MCU selection control according to Embodiment 4 of the present invention
  • FIG. 7 is a remote according to an embodiment of the present invention.
  • FIG. 8 is a schematic structural diagram of a control device of a remote presentation system site according to a preferred embodiment of the present invention.
  • Step S102 A Micro Control Unit (MCU) receives a remote presentation.
  • a control message of the system site where the control message carries location information of the multimedia to be controlled in the site where the control is to be performed; for example, in the networking structure of the remote presentation system shown in FIG. 2, the main MCU controls three Venue: Venue 1, Venue 2 and Venue 3, where Venue 1 is a three-screen (left, mid, and right screen) venue, which consists of three participating terminals.
  • MCU Micro Control Unit
  • Venue 2 is also a three-screen (left screen, middle screen, and Right screen)
  • the conference site consists of three conference terminals.
  • the conference site 3 is a single-screen conference site. Two sites are controlled from the MCU: site 4 and site 5, where site 4 and site 5 are three-screen venues.
  • the conference site 1 can send the control message of the telepresence system site to the main MCU.
  • the control message can carry the location information indicating the multimedia to be controlled in the site 2 (ie, indicating the multimedia)
  • the multimedia is the multimedia of the road where the middle screen of the site 2 is located, for example, the screens in the site 2 can be numbered, and the left screen and the middle screen are respectively represented by 0, 1, 2
  • the location information of the multimedia to be controlled carried in the control message is "1" in the site where the control is located.
  • the multimedia to be controlled may include, but is not limited to: various media included in traditional conference television such as audio media and/or video media, LSD media, that is, audio or images.
  • the foregoing control message received by the MCU may be directly sent by the site controlled by the MCU, or may be sent by the upper-level MCU.
  • the MCU may send the MCU to the MCU.
  • the control message the MCU receives the control message, and determines whether the controlled site in which the control message requests the multimedia is located is the site of the MCU of the current level, and if so, the MCU processes and controls the The control operation corresponding to the message; if not, the control message is delivered to the MCU where the controlled conference site is located, and the control message is received and processed by the MCU where the controlled conference site is located.
  • the foregoing control message may be implemented by adding a field for indicating the location information of the multimedia to be controlled in the site control message defined by the H245 protocol.
  • the conference request message ConferenceRequest
  • conference response message ConferenceResponse
  • conference command ConferenceCommand
  • conference indication Conferencelndication
  • the remote presentation system control message is presented, such as, but not limited to, a remote presentation broadcast, a remote presentation cancel broadcast, and a remote presentation selection, and may also be other related control messages.
  • Step S104 The MCU performs a control operation corresponding to the control message on the multimedia corresponding to the location information.
  • the MCU may further return a control response message to the sender of the control message, where the control response message carries the result of the control operation.
  • the control response message may further carry the location of the multimedia to be controlled in the site where the control is located. information. For example, if the control message received by the MCU is from the site that it controls, the MCU returns a control response message to the site. If the control message received by the MCU is from the upper-level MCU, the MCU returns the control response message to the upper-level MCU. The control response message is returned by the upper-level MCU to the site where the control message is sent.
  • the control response message is implemented by adding a field for indicating the location information of the multimedia to be controlled in the site where the content is to be controlled, in the site control response message defined by the H245 protocol.
  • the MCU performs different control flows for different control messages. For example, if the control message includes: a remote presentation broadcast message, the MCU performing the control operation corresponding to the control message on the multimedia corresponding to the location information may include the following steps: Step 1: The MCU searches for the remote presentation Broadcasting a message requesting a venue to be broadcast; Step 2: The MCU determines whether the broadcasted site is a site of the MCU of the current level. If yes, go to step 3.
  • Step 3 Determine whether the broadcasted site contains the site.
  • the multimedia corresponding to the location information if yes, performing step 4; step 4, broadcasting the multimedia corresponding to the location information to all terminals in the conference; step 5, transmitting the remote presentation broadcast message to the subordinate MCU And determining, by the lower-level MCU, whether the multimedia corresponding to the location information is included in the broadcasted conference site, and if yes, broadcasting the multimedia corresponding to the location information to all terminals in the conference.
  • the control message includes: a remote presentation selection message, where the remote presentation selection message carries the destination location information of the selected conference site and the location information of the source multimedia selected to view the conference site.
  • Step 1 The MCU searches for the selected viewing site; Step 2, the MCU determines whether the selected viewing site is a site of the MCU of the current level, if yes, determining whether the selected viewing site contains multimedia corresponding to the location information of the source multimedia, and if yes, switching the multimedia corresponding to the location information of the source multimedia And the conference terminal corresponding to the destination location information; Step 3, the selected conference site is a site of the lower-level MCU, and the remote presentation selection message is delivered to the lower-level MCU, and the lower-level MCU determines the Whether the multimedia corresponding to the location information of the source multimedia is included in the selected conference site, and if yes, the multimedia corresponding to the location information of the source multimedia is switched to the conference terminal corresponding to the destination location information.
  • control message includes: a remote presentation cancellation broadcast message, where the remote presentation cancellation broadcast message carries location information of the multimedia that is cancelled.
  • the MCU performing the control operation corresponding to the control message on the multimedia corresponding to the location information may include the following steps: Step 1: The MCU searches for the cancelled broadcast site; Step 2, the MCU determines that the broadcast is cancelled.
  • Step 3 If the conference site that is canceled is the site of the lower-level MCU, the remote presentation selection message is transmitted to the lower-level MCU, and the lower-level MCU determines whether the conference site that is cancelled is Contain and The multimedia corresponding to the location information of the multimedia, if yes, canceling the broadcast of the multimedia corresponding to the location information of the multimedia.
  • the site when the site wants to control the current conference, the site sends a corresponding remote presentation system control message to the MCU, such as a remote presentation broadcast. After receiving the message, the MCU performs the message according to the specific message content. Control the action and feedback the execution result to the venue.
  • the MCU of the current level needs to forward the telepresence system control message sent from the site to the controlled conference site in the MCU, and the corresponding control command is executed by the controlled conference site on the MCU. The execution result is fed back to the site where the control action is performed by the superior MCU.
  • Embodiment 1 This embodiment uses a three-screen venue 1 to request broadcast of a three-screen conference site 2 image as an example for description. This embodiment is extended based on the makeTerminalBroadcaster and makeTerminalBroadcasterResponse messages of the H245 protocol.
  • the location description information Location is defined, and the tpsmakeTerminalBroadcaster and tpsmakeTerminalBroadcasterResponse messages are defined.
  • the location of ⁇ Zeng B is used to indicate the location information of the broadcasted image at the site where it is located. It can be defined as 0 to broadcast all screen images, 1 to broadcast left screen image, 2 to broadcast mid screen image, 3 to broadcast right The screen image, and if a new screen is added to the venue, the value can be expanded.
  • FIG. 3 is a flowchart of controlling the site of the remote presentation system in the embodiment.
  • the method mainly includes the following steps: Step 301: Site 1 sends a tpsmakeTerminalBroadcaster message to the primary MCU, where the message is The terminal label (TerminalLabel) is the TerminalLabel of the broadcast terminal. In this embodiment, it is the TerminalLabel of the site 2.
  • the newly added Location in the message is the location information of the broadcasted image at the site where it is located, to indicate which way the MCU needs to broadcast. In this embodiment, since the middle screen of the conference site 2 is to be broadcast, the location value of the location in the message is 2.
  • Step 302 The main MCU receives the tpsmakeTerminalBroadcaster message and searches for the broadcast site according to the TerminalLabel. The following three results are obtained: The broadcast site is not found, the broadcast site is the MCU site, and the broadcast site is the non-level MCU. Meeting place. If the broadcast terminal is not found, go to step 303 and return to the site 1 a tpsmakeTerminalBroadcasterResponse message, where the makeTerminalBroadcasterResponse field is deniedMakeTerminalBroadcaster, indicating that the broadcast fails. If the broadcast site is the MCU site, the primary MCU needs to find the video of the location of the broadcast site based on the original broadcast process.
  • step 303 If not, go to step 303 and return to the site 1 the tpsmakeTerminalBroadcasterResponse message, where the makeTerminalBroadcasterResponse field is displayed.
  • DeniedMakeTerminalBroadcaster if included, the main MCU will be the location of the broadcast terminal The image of the location is broadcasted to the location of all the terminals in the conference, and the process proceeds to step 303. The message is returned to the site 1 and the message is sent to the site 1.
  • the makeTerminalBroadcasterResponse field is the grantedMakeTerminalBroadcaster, indicating that the broadcast is successful.
  • the master MCU will switch the mid-screen image of the field 2. To the venue 1, from the MCU cascade port cascaded in the screen.
  • the multi-level MCU broadcast control process is performed according to the remote presentation system shown in the second embodiment.
  • the primary MCU returns a tpsmakeTerminalBroadcasterResponse message to the site.
  • the value of the Location is the value of the Location of the tpsmakeTerminalBroadcaster.
  • the value of the makeTerminalBroadcasterResponse is determined according to the result in the step 302. The process ends.
  • the master MCU cannot know the left screen image, the mid screen image, the right screen image or all the screen images of the broadcast site 2 after receiving the makeTerminalBroadcaster message. .
  • the position description information of the broadcasted site in the broadcast site is added in the makeTerminalBroadcaster, so that the MCU can acquire the mid-screen image that needs to broadcast the site 2.
  • Embodiment 2 This embodiment is described by taking the screen image of the site 1 broadcast site 4 as an example.
  • FIG. 4 is a flowchart of controlling the remote presentation system site in the embodiment.
  • controlling the remote presentation site in the embodiment mainly includes the following steps: Step 401, the same as step 301, the implementation
  • the TerminalLabel in the tpsmakeTerminalBroadcaster is the TerminalLabel of the site 4. Since the mid-screen of the site 4 is to be broadcast, the value of the Location is 2.
  • Step 402 The main MCU receives the tpsmakeTerminalBroadcaster message, and searches for the broadcasted site according to the TerminalLabel.
  • Step 404 The primary MCU delivers the tpsmakeTerminalBroadcaster message to the MCU where the broadcast terminal is located, which is the slave MCU in this embodiment.
  • Step 405 Receive a process of receiving a tpsmakeTerminalBroadcaster message from the MCU, and processing and stepping the same
  • Step 402 is similar.
  • the mid-screen image of the field 4 is broadcast from the MCU.
  • Step 406 Send a tpsmakeTerminalBroadcasterResponse message from the MCU to the primary MCU.
  • the Location value is 2, and the makeTerminalBroadcasterResponse is the grantedMakeTerminalBroadcaster.
  • Step 407 The main MCU receives the tpsmakeTerminalBroadcasterResponse message, and transparently transmits the message to the site 1.
  • Step 408 The makeTerminalBroadcasterResponse message of the tpsmakeTerminalBroadcasterResponse message received by the main MCU is the grantedMakeTerminalBroadcaster, and the main MCU broadcasts the image of the location of the MCU to all the sites in the main MCU conference.
  • Embodiment 3 This embodiment is described by taking the screen image of the conference site 2 as the example.
  • the location description information sourceLocation source location, that is, the location information of the selected multimedia in the conference site
  • sendThisSource sendThisSource (request request message) and sendThisSourceResponse (select response message) messages of the H245 protocol.
  • destinationLocation defines the tp ssendThi s S ource , tpssendThisSourceResponse message.
  • the sourceLocation type is an integer, meaning that the source location information of the selected site is selected, where 0 indicates all screens, 1 indicates a left screen, 2 indicates a middle screen, and 3 indicates a right screen.
  • Extension; destinationLocation type is an integer, meaning the destination location information of the selected site, 0 means all screens, 1 means left screen, 2 means middle screen, 3 means right screen, expandable.
  • the message clearly indicates that the image of the location location of the site to be selected is switched to the location location screen image of the selected site.
  • FIG. 5 is a flowchart of performing remote control system site control in the embodiment.
  • the method may include the following steps: Step 501: Site 1 sends a tpsSendThisSourceRequest message to the primary MCU, where the TerminalLabel is selected to be selected. TerminalLabel of the site, sourceLocation is the source location information of the selected site, and destinationLocation is the location information of the selected site.
  • the mid-screen image of the site 2 is selected in the site 1 field. Therefore, the TerminalLabel in the tpsSendThisSourceRequest message is the TerminalLabel of the site 2, the sourceLocation is 2, and the destinationLocation is 2.
  • Step 502 After receiving the tpsSendThisSourceRequest message, the main MCU searches for the selected site according to the terminalLabel. For example, the following three results may be obtained: The selected site is not selected, the site is selected as the MCU site, and the site is selected. Non-level MCU site. If the selected site is not found, go directly to step 503 and send a tp s S endThi s S ourceResponse message to the site 1, where the sendThisSourceResponse is denied S endThi s S ource. If the site is selected as the MCU site, the main MCU judges the validity of the sourceLocation and destinationLocation values in the tpsSendThisSourceRequest message.
  • the destination location screen image is selected. MCU thinks that sourceLocation and destinationLocation value is valid, the main MCU shell 1 J! The image of the sourceLocation screen position of the selected site is switched to the location of the destination location screen, and the process proceeds to step 503, and a tpsSendThisSourceResponse message is sent to the site 1, and the sendThisSourceResponse is the granted SendThis Source; if the sourceLocation and the destinationLocation value are invalid, the U Go to step 503 and send a tpsSendThisSourceResponse message to site 1. The sendThisSourceResponse in the message is deniedSendThisSource.
  • Step 503 The MCU master sends a tpsSendThisSourceResponse message to the site 1, and the value of the sourceLocation and the destinationLocation in the message is the same as the sourceLocation destinationLocation value in the tps SendThis Source message, and the sendThisSourceResponse in the message is determined according to the processing result of step 502. The process ends.
  • the sendThisSource and sendThisSourceResponse messages of the existing H245 are used, the location information description is not included in the message. Therefore, after receiving the sendThisSource message, the master MCU cannot know which location of the site 1 the image of the field 2 is switched to.
  • the master MCU by specifying the selected source location information and the selected destination location information in tpssendThisSource, it is possible to switch a specific one-way multimedia in the field to a specific screen terminal of another conference site.
  • the fourth embodiment of the present invention is described by using the three-screen conference site 1 as an example.
  • the tpsSendThisSourceRequest message and the tpsSendThisSourceResponse message are the same as those in the third embodiment, and are not described here.
  • Step 601 is the same as step 501.
  • the mid-screen of the site 1 is selected to view the screen in the site 4, and the TerminalLabel in the tpsSendThisSourceRequest message is the TerminalLabel of the site 4, the sourceLocation is 2, and the destinationLocation is 2.
  • Step 602 The main MCU receives the tpsSendThisSourceRequest message, and searches for the selected site according to the TerminalLabel in the message.
  • the main MCU determines that the tpsSendThisSourceRequest message needs to be sent to the selected MCU. In this embodiment, the message is sent to the slave MCU by the master MCU, and step 604 is performed. Otherwise, the process is performed according to step 502, and step 603 is performed. Step 603 is the same as step 503. In step 604, the primary MCU sends a tpsSendThisSourceRequest message to the secondary MCU. Step 605: Similar to step 602, in this embodiment, the screen image of the field 4 is switched from the MCU to the MCU main screen.
  • Step 606 similar to step 503, in this embodiment, the tpsSendThisSourceResponse message is sent from the MCU to the primary MCU.
  • Step 607 The primary MCU receives the tpsSendThisSourceResponse message sent from the MCU, and directly delivers the message to the conference site 1. At the same time, the value of sendThisSourceResponse in the tpsSendThisSourceResponse message is judged. If sendThisSourceResponse is grantedSendThisSource, go to step 609; if sendThisSourceResponse is deniedSendThisSource, the process ends.
  • FIG. 7 is a schematic structural diagram of a remote control system site control device according to an embodiment of the present invention.
  • the device is located in an MCU.
  • the device may include: a receiving module 10 configured to receive a control message of a remote presentation system site.
  • the control message carries the location information of the multimedia to be controlled in the conference site;
  • the execution module 20 is connected to the receiving module 10, and is configured to perform, corresponding to the control message, the multimedia corresponding to the location information. Control operation.
  • the apparatus may further include: the response module 30 is connected to the execution module 20, and is configured to return a control response message to the sender of the control message, where The control response message carries the result of the control operation.
  • the control response message carries the result of the control operation.
  • the control response message further carries the multimedia to be controlled at the site where the control message is located.
  • Location information in .
  • the control response message carrying the location information may be added to a field that is set to indicate the location information of the multimedia to be controlled by using the site control response message defined by the H245 protocol. achieve.
  • the foregoing control message may be implemented by adding a field set to indicate the location information of the multimedia to be controlled in the site control message defined by the H245 protocol.
  • the various modules of the device may perform the control process according to the description of the foregoing method embodiments, and details are not described herein. From the above description, it can be seen that, in the embodiment of the present invention, when the site wants to control the current conference, the corresponding remote presentation system control message is sent to the MCU through the site, such as a remote presentation broadcast, and the MCU receives the message. After that, the control action is performed according to the specific message content, and the execution result is fed back to the site.
  • the MCU of the current level needs to forward the telepresence system control message sent from the site to the controlled conference site in the MCU, and the corresponding control command is executed by the controlled conference site in the MCU, and will be executed at the same time.
  • the result is fed back to the site where the control action is performed by the superior MCU. It compensates for the inability of the H323 telepresence system site to control the conference. It achieves the effect of flexible control of the audio/video stream at different locations of the conference, and can control the remote presentation system cascade conference to improve the telepresence system. Ease of use and user experience.
  • modules or steps of the present invention can be implemented by a general-purpose computing device, which can be concentrated on a single computing device or distributed over a network composed of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device, such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein.
  • the steps shown or described are performed, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps are fabricated as a single integrated circuit module.
  • the invention is not limited to any specific combination of hardware and software.
  • the above is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)

Abstract

Disclosed are a telepresence conference site control method and apparatus. The method comprises: a micro control unit (MCU) receiving a control message for a telepresence conference site, the control message carrying position information of multimedia required to be controlled in a conference site where the multimedia is located; and the MCU executing a control operation in response to the control message on the multimedia corresponding to the position information. The present invention may control multimedia at different positions of a telepresence system.

Description

远程呈现系统会场的控制方法及装置 技术领域 本发明涉及通信领域， 具体而言，涉及一种远程呈现系统会场的控制方法及装置。 背景技术 远程呈现系统（telepresence)是指使与会者有身临其境的现场感的会议电视系统， 相比传统视频会议系统具有能够提供听声辨位、 真人大小的图像、 眼神交流效果、 更 加流畅的运动以及远端参会者精确的肢体行为。 远程呈现系统会场有别于传统会议电 视所用的会场， 一般有单屏、 双屏、 三屏、 多屏之分， 其中， 屏是指用于呈现远方会 场的大显示器， 一屏包含一个显示器， 每屏对应一路音和 /或视频媒体。 远程呈现系统是由传统会议电视演变而来， 在实际使用中， 传统会议电视控制大 部分都是由终端来控制的， 远程呈现系统实现会场对会议的控制， 可以使会议控制更 简单， 提高系统的易用性。在 H323协议中定义的会场对会议进行控制的 H245会议控 制消息中无法指定进行控制的屏的位置信息，如果将其直接应用到远程呈现系统会场， 由于远程呈现系统会场区别于原有的会议电视会场，需要传输多路音 /视频媒体。因此， 采用 H323协议原有的 H245会议控制消息不能明确是对哪一路音 /视频媒体进行控制， 从而无法实现会场对会议进行控制。 发明内容 本发明提供了一种远程呈现系统会场的控制方法及装置， 以至少解决上述问题。 根据本发明的一个方面， 提供了一种远程呈现系统会场的控制方法， 包括： MCU 接收远程呈现系统会场的控制消息， 其中， 该控制消息中携带有需要控制的多媒体在 其所在的会场中的位置信息; MCU对与上述位置信息对应的多媒体执行与该控制消息 对应的控制操作。 优选地， 所述 MCU接收远程呈现系统会场的控制消息包括： 第一会场向其 MCU 发送所述控制消息； 所述第一会场的所述 MCU接收所述控制消息， 判断所述控制消 息请求控制的所述多媒体所在的被控会场是否为本级 MCU的会场， 如果是， 则由所 述第一会场的所述 MCU执行所述控制操作； 如果不是， 则将所述控制消息传递给所 述被控会场的 MCU， 所述被控会场的所述 MCU接收所述控制消息， 由所述被控会场 的所述 MCU执行所述控制操作。 优选地， 如果所述被控会场为所述第一会场所在的本级 MCU下的会场， 在所述 第一会场的所述 MCU执行所述控制操作之后， 所述方法还包括： 所述第一会场的所 述 MCU向所述第一会场返回第一控制响应消息， 其中， 所述第一控制响应消息中携 带有所述控制操作的结果； 如果所述被控会场不是所述第一会场所在的本级 MCU下 的会场， 在所述被控会场的所述 MCU执行所述控制操作之后， 所述方法还包括： 所 述被控会场的所述 MCU向所述第一会场的所述 MCU返回第二控制响应消息， 其中， 所述第二控制响应消息中携带有所述控制操作的结果及所述需要控制的多媒体在其所 在会场中的位置信息； 所述第一会场的所述 MCU接收所述第二控制响应消息， 并将 所述第二控制响应消息转发给所述第一会场。 优选地， 所述第二控制响应消息通过在 H245协议定义的会场控制响应消息中增 加用于指示所述需要控制的多媒体在其所在会场中的位置信息的字段实现。 优选地， 所述控制消息通过在 H245协议定义的会场控制消息中增加用于指示所 述需要控制的多媒体在其所在会场中的位置信息的字段实现。 优选地， 所述控制消息包括： 远程呈现广播消息； 所述 MCU对与所述位置信息 对应的多媒体执行与所述控制消息对应的控制操作包括： 所述 MCU查找所述远程呈 现广播消息请求被广播的会场；所述 MCU判断所述被广播的会场是否为本级 MCU的 会场， 如果是， 则判断所述被广播的会场中是否包含与所述位置信息对应的多媒体， 如果是， 则将与所述位置信息对应的多媒体广播到与会的所有终端； 如果所述被广播 的会场为下级 MCU的会场， 则将所述远程呈现广播消息传递给所述下级 MCU， 所述 下级 MCU判断所述被广播的会场中是否包含与所述位置信息对应的多媒体， 如果是， 则将与所述位置信息对应的多媒体广播到与会的所有终端。 优选地， 所述控制消息包括： 远程呈现选看消息， 其中， 所述远程呈现选看消息 中携带有选看会场的目的位置信息以及被选看会场的源多媒体的位置信息；所述 MCU 对与所述位置信息对应的多媒体执行与所述控制消息对应的控制操作包括：所述 MCU 查找所述被选看会场；所述 MCU判断所述被选看会场是否为本级 MCU的会场，如果 是， 则判断所述被选看会场中是否包含与所述源多媒体的位置信息对应的多媒体， 如 果是， 则将与所述源多媒体的位置信息对应的多媒体切换到与所述目的位置信息对应 的与会终端； 如果所述被选看会场为下级 MCU的会场， 则将所述远程呈现选看消息 传递给所述下级 MCU，所述下级 MCU判断所述被选看会场中是否包含与所述源多媒 体的位置信息对应的多媒体， 如果是， 则将与所述源多媒体的位置信息对应的多媒体 切换到与所述目的位置信息对应的与会终端。 根据本发明的另一方面， 提供了一种远程呈现系统会场的控制装置， 包括： 接收 模块， 设置为接收远程呈现系统会场的控制消息， 其中， 所述控制消息中携带有需要 控制的多媒体在其所在会场中的位置信息； 执行模块， 设置为对与所述位置信息对应 的多媒体执行与所述控制消息对应的控制操作。 优选地， 所述装置还包括： 响应模块， 设置为向所述控制消息的发送方返回控制 响应消息， 其中， 所述控制响应消息中携带有所述控制操作的结果， 如果所述控制消 息的发送方为上级 MCU，则所述控制响应消息中还携带有所述需要控制的多媒体在其 所在会场中的位置信息。 优选地， 携带有所述位置信息的所述控制响应消息通过在 H245协议定义的会场 控制响应消息中增加设置为指示所述需要控制的多媒体的位置信息的字段实现。 优选地， 所述控制消息通过在 H245协议定义的会场控制消息中增加设置为指示 所述需要控制的多媒体的位置信息的字段实现。 通过本发明， 在远程呈现系统会场的控制消息中携带需要控制的多媒体的位置信 息， 使得 MCU可以获取需要控制的多媒体所在的位置， 从而解决了采用 H323协议原 有的 H245会议控制消息不能明确是对什么位置的音 /视频媒体进行控制， 从而无法实 现远程呈现系统的会场控制的问题， 进而可以实现对远程呈现系统不同位置的多媒体 进行控制。 附图说明 此处所说明的附图用来提供对本发明的进一步理解， 构成本申请的一部分， 本发 明的示意性实施例及其说明用于解释本发明， 并不构成对本发明的不当限定。 在附图 中： 图 1是根据本发明实施例的远程呈现系统会场的控制方法的流程图； 图 2是根据本发明实施例的一种远程呈现系统的组网示意图； 图 3是根据本发明实施例一的远程呈现系统单级 MCU广播控制的流程图； 图 4是根据本发明实施例二的远程呈现系统多级 MCU广播控制的流程图； 图 5是根据本发明实施例三的单级 MCU选看控制的流程图； 图 6是根据本发明实施例四的多级 MCU选看控制的流程图； 图 7是根据本发明实施例的远程呈现系统会场的控制装置的结构示意图； 以及 图 8是根据本发明优选实施例的远程呈现系统会场的控制装置的结构示意图。 具体实施方式 下文中将参考附图并结合实施例来详细说明本发明。 需要说明的是， 在不冲突的 情况下， 本申请中的实施例及实施例中的特征可以相互组合。 图 1是根据本发明实施例的远程呈现系统会场的控制方法的流程图，如图 1所示， 主要包括以下步骤： 步骤 S102, 多点控制单元 （Micro Control Unit, 简称为 MCU) 接收远程呈现系 统会场的控制消息， 其中， 该控制消息中携带有需要控制的多媒体在其所在的会场中 的位置信息； 例如，在图 2所示的远程呈现系统的组网结构中，主 MCU控制三个会场：会场 1、 会场 2和会场 3， 其中， 会场 1为三屏 （左屏、 中屏和右屏） 会场， 即包含三个与会 终端， 会场 2也为三屏 （左屏、 中屏和右屏） 会场， 包含三个与会终端， 会场 3为单 屏会场。 从 MCU控制两个会场： 会场 4和会场 5， 其中， 会场 4和会场 5均为三屏会 场。 会场 1可以向主 MCU发送远程呈现系统会场的控制消息， 如果需要控制会场 2 的中屏的多媒体， 则该控制消息中可以携带指示需要控制的多媒体在会场 2中的位置 信息 （即指示该多媒体为会场 2的中屏， 也就是说该多媒体为会场 2的中屏所在路的 多媒体）， 例如， 可以对会场 2中的各屏进行编号， 分别用 0， 1， 2表示左屏、 中屏和 右屏， 则该控制消息中携带的需要控制的多媒体在其所在的会场中的位置信息为 "1"。 其中， 需要控制的多媒体可以包括但不限于： 音频媒体和 /或视频媒体、 LSD媒体 等传统会议电视所包含的各种媒体， 即音频或图像。 其中， MCU接收的上述控制消息可以直接是由其控制的会场发送的， 也可以是其 上级 MCU发送的， 例如， 第一会场在需要对会议中的会场进行多媒体控制时， 可以 向其 MCU发送所述控制消息，该 MCU接收该控制消息，判断该控制消息请求控制的 多媒体所在的被控会场是否为本级 MCU的会场，如果是，则由该 MCU处理与该控制 消息对应的控制操作； 如果不是， 则将该控制消息传递给被控会场所在的 MCU， 由被 控会场所在的 MCU接收并处理该控制消息。 在本发明实施例的一个优选实施方式中， 上述控制消息可以通过在 H245协议定 义的会场控制消息中增加用于指示所述需要控制的多媒体的位置信息的字段实现。 例 如， 可以对 H245 协议定义的会议请求消息 （ConferenceRequest )、 会议响应消息 ( ConferenceResponse ) 、 会议命令 ( ConferenceCommand ) 、 会议指不 ( Conferencelndication) 等消息进行扩展， 增加远程呈现广播、 远程呈现取消广播、 远程呈现选看等远程呈现系统控制消息， 其中， 远程呈现系统控制消息包括但不仅限 于远程呈现广播、远程呈现取消广播和远程呈现选看，还可以是其他的相关控制消息。 远程呈现系统控制消息定义的原则为在 H245 协议中定义的终端广播 ( makeTerminalBroadcaster ) 选看（sendThisSource)等消息基础上扩充位置信息描述。 步骤 S104, 所述 MCU对与所述位置信息对应的多媒体执行与所述控制消息对应 的控制操作。 在本发明实施例的一个优选实施方式中， 在 MCU执行上述控制操作之后， MCU 还可以向该控制消息的发送方返回控制响应消息， 其中， 该控制响应消息中携带有控 制操作的结果。 优选地， 如果该控制消息的发送方为上级 MCU (即控制消息经上级 MCU发送到被控会场的 MCU)，则该控制响应消息中还可以携带上述需要控制的多媒 体在其所在会场中的位置信息。 例如， 如果 MCU接收的控制消息来自于其所控制的 会场，则 MCU将控制响应消息返回给该会场，如果 MCU接收的控制消息来源于上级 MCU, 则 MCU将该控制响应消息返回给上级 MCU， 由上级 MCU将该控制响应消息 返回给发送该控制消息的会场。 在本发明实施例的一个优选实施方式中， 上述控制响应消息通过在 H245协议定 义的会场控制响应消息中增加用于指示上述需要控制的多媒体在其所在会场中的位置 信息的字段实现。 在本发明实施例的优选实施方式中，针对不同的控制消息， MCU执行不同的控制 流程。 例如， 如果所述控制消息包括： 远程呈现广播消息， 则 MCU对与所述位置信息 对应的多媒体执行与所述控制消息对应的控制操作主要可以包括以下步骤： 步骤 1， MCU查找所述远程呈现广播消息请求被广播的会场； 步骤 2， MCU判断所述被广播的会场是否为本级 MCU的会场， 如果是， 则执行 步骤 3， 如果不是， 则执行步骤 5; 步骤 3， 判断所述被广播的会场中是否包含与所述位置信息对应的多媒体， 如果 是， 则执行步骤 4; 步骤 4， 将与所述位置信息对应的多媒体广播到与会的所有终端； 步骤 5， 将所述远程呈现广播消息传递给所述下级 MCU， 该下级 MCU判断所述 被广播的会场中是否包含与所述位置信息对应的多媒体， 如果是， 则将与所述位置信 息对应的多媒体广播到与会的所有终端。 如果所述控制消息包括： 远程呈现选看消息， 其中， 所述远程呈现选看消息中携 带有选看会场的目的位置信息以及被选看会场的源多媒体的位置信息。 则 MCU对与 所述位置信息对应的多媒体执行与所述控制消息对应的控制操作可以包括以下步骤： 步骤 1， MCU查找所述被选看会场； 步骤 2， MCU判断所述被选看会场是否为本级 MCU的会场， 如果是， 则判断所 述被选看会场中是否包含与所述源多媒体的位置信息对应的多媒体， 如果是， 则将与 所述源多媒体的位置信息对应的多媒体切换到与所述目的位置信息对应的与会终端； 步骤 3，所述被选看会场为下级 MCU的会场， 则将所述远程呈现选看消息传递给 所述下级 MCU，所述下级 MCU判断所述被选看会场中是否包含与所述源多媒体的位 置信息对应的多媒体， 如果是， 则将与所述源多媒体的位置信息对应的多媒体切换到 与所述目的位置信息对应的与会终端。 如果所述控制消息包括： 远程呈现取消广播消息， 其中， 所述远程呈现取消广播 消息中携带有被取消广播的多媒体的位置信息。 则 MCU对与所述位置信息对应的多 媒体执行与所述控制消息对应的控制操作可以包括以下步骤： 步骤 1， MCU查找所述被取消广播的会场； 步骤 2， MCU判断所述被取消广播的会场是否为本级 MCU的会场， 如果是， 则 判断所述被取消广播的会场中是否包含与所述多媒体的位置信息对应的多媒体， 如果 是， 则取消与所述多媒体的位置信息对应的多媒体的广播； 步骤 3，如果所述被取消广播的会场为下级 MCU的会场，则将所述远程呈现选看 消息传递给所述下级 MCU，所述下级 MCU判断所述被取消广播的会场中是否包含与 所述多媒体的位置信息对应的多媒体， 如果是， 则取消与所述多媒体的位置信息对应 的多媒体的广播。 通过本发明实施例提供的上述方法， 当会场想要对当前会议进行控制时， 通过会 场给 MCU发送相应的远程呈现系统控制消息， 比如远程呈现广播， MCU接收到消息 后， 根据具体消息内容执行控制动作， 并将执行结果反馈给会场。 级联会议中， 如果 会场对非本级会议会场进行控制， 本级 MCU需要将会场发来的远程呈现系统控制消 息转发给被控会场所在 MCU， 由被控会场所在 MCU执行相应控制命令， 同时将执行 结果通过上级 MCU 反馈给执行控制动作的会场。 弥补了 H323远程呈现系统会场无 法对会议进行控制的不足， 达到了会场对会议不同位置的音 /视频码流灵活控制的效 果， 并且可以对远程呈现系统级联会议进行控制， 提高了远程呈现系统的易用性和用 户体验。 下面以图 2所示的远程呈现系统的组网结构为例， 对本发明实施例提供的技术方 案进行说明。 实施例一 本实施例以三屏会场 1请求广播三屏会场 2中屏图像为例进行说明。 本 实 施 例 在 H245 协 议 的 makeTerminalBroadcaster 及 makeTerminalBroadcasterResponse 消息的基础上进行了扩展， 在这两个控制消息中增 力口 了 位 置 描 述 信 息 Location ， 定 义 了 tpsmakeTerminalBroadcaster 及 tpsmakeTerminalBroadcasterResponse消息。 其中， ±曾力 B的 Location用于表示被广播图 像在其所在会场的位置信息， 可以定义为 0表示广播所有屏图像， 1表示广播左屏图 像， 2表示广播中屏图像， 3表示广播右屏图像， 并且， 如果该会场中增加了新屏， 可 以能该取值进行扩展。 在本实施例的一个优选实施方式中 ， tpsmakeTerminalBroadcaster 和 tpsmakeTerminalBroadcasterResponse可以定义为： tpsmakeTerminalBroadcaster： := SEQUENCE The present invention relates to the field of communications, and in particular to a method and apparatus for controlling a venue of a telepresence system. BACKGROUND OF THE INVENTION Telepresence refers to a conference television system that enables an immersive presence of a participant. Compared with a conventional video conferencing system, the telepresence system can provide audio-visual recognition, life-size images, eye contact effects, and smoother. The movement and the precise physical behavior of the remote participants. The telepresence system is different from the traditional conference TV. It usually has single screen, dual screen, three screens and multiple screens. Among them, the screen refers to the large display used to display the remote venue, and the screen contains a display. Each screen corresponds to one channel of sound and / or video media. The telepresence system evolved from traditional conference TV. In actual use, most of the traditional conference TV control is controlled by the terminal. The telepresence system realizes the control of the conference at the conference site, which can make the conference control simpler and improve the system. Ease of use. The position information of the screen to be controlled cannot be specified in the H245 conference control message that is controlled by the site defined in the H323 protocol. If the site is directly applied to the telepresence system site, the telepresence system site is different from the original conference TV. At the venue, multiple channels of audio/video media need to be transmitted. Therefore, the original H245 conference control message of the H323 protocol cannot be used to control which audio/video media is controlled, so that the conference cannot control the conference. SUMMARY OF THE INVENTION The present invention provides a method and apparatus for controlling a venue of a telepresence system to solve at least the above problems. According to an aspect of the present invention, a method for controlling a site of a remote presentation system is provided, including: receiving, by the MCU, a control message of a site of the remote presentation system, where the control message carries the multimedia to be controlled in the site where the control is located Position information; The MCU performs a control operation corresponding to the control message on the multimedia corresponding to the location information. Preferably, the control message of the MCU receiving the remote presentation system site includes: the first site sends the control message to its MCU; the MCU of the first site receives the control message, and determines that the control message requests control Whether the controlled site where the multimedia is located is the site of the MCU of the current level, and if so, the control operation is performed by the MCU of the first site; if not, the control message is transmitted to the site The MCU of the controlled conference site receives the control message by the MCU of the controlled conference site, and the control operation is performed by the MCU of the controlled conference site. Preferably, if the controlled site is a site under the MCU of the first site, after the MCU of the first site performs the control operation, the method further includes: The MCU of the conference site returns a first control response message to the first conference site, where the first control response message carries the result of the control operation; if the controlled conference site is not the first conference site After the MCU of the controlled site performs the control operation, the method further includes: the MCU of the controlled site to the first site The MCU returns a second control response message, where the second control response message carries the result of the control operation and the location information of the multimedia to be controlled in the site where it is located; The MCU receives the second control response message, and forwards the second control response message to the first site. Preferably, the second control response message is implemented by adding a field for indicating location information of the multimedia to be controlled in the site where the content is to be controlled, in the site control response message defined by the H245 protocol. Preferably, the control message is implemented by adding a field for indicating location information of the multimedia to be controlled in the site where the control is required in the site control message defined by the H245 protocol. Preferably, the control message includes: a remote presentation broadcast message; the MCU performing a control operation corresponding to the control message on the multimedia corresponding to the location information, including: the MCU searching for the remote presentation broadcast message request to be a site of the broadcast; the MCU determines whether the broadcasted site is a site of the MCU, and if yes, determines whether the broadcasted site includes multimedia corresponding to the location information, and if so, The multimedia corresponding to the location information is broadcasted to all the terminals of the conference; if the broadcasted conference site is the site of the lower-level MCU, the remote presentation broadcast message is delivered to the lower-level MCU, and the lower-level MCU determines the Whether the multimedia corresponding to the location information is included in the broadcasted conference site, and if so, the multimedia corresponding to the location information is broadcast to all terminals participating in the conference. Preferably, the control message includes: a remote presentation selection message, where the remote presentation selection message carries the destination location information of the selected conference site and the location information of the source multimedia selected to view the conference site; the MCU pair And performing, by the multimedia corresponding to the location information, the control operation corresponding to the control message, the MCU searching for the selected viewing site; and the MCU determining whether the selected viewing site is a site of the MCU of the current level, if If yes, it is determined whether the multimedia corresponding to the location information of the source multimedia is included in the selected viewing site, and if yes, the multimedia corresponding to the location information of the source multimedia is switched to correspond to the destination location information. If the selected viewing site is a site of the lower-level MCU, the remote presentation selection message is transmitted to the subordinate MCU, and the subordinate MCU determines whether the selected viewing site includes the Source multimedia The multimedia corresponding to the location information of the body, if yes, the multimedia corresponding to the location information of the source multimedia is switched to the participant terminal corresponding to the destination location information. According to another aspect of the present invention, a control device for a remote presentation system site is provided, including: a receiving module, configured to receive a control message of a remote presentation system site, wherein the control message carries a multimedia that needs to be controlled The location information in the site; the execution module is configured to perform a control operation corresponding to the control message on the multimedia corresponding to the location information. Preferably, the device further includes: a response module, configured to return a control response message to the sender of the control message, where the control response message carries a result of the control operation, if the control message The sender is the upper-level MCU, and the control response message further carries the location information of the multimedia to be controlled in the site where the sender is located. Preferably, the control response message carrying the location information is implemented by adding a field set to indicate location information of the multimedia to be controlled in the site control response message defined by the H245 protocol. Preferably, the control message is implemented by adding a field set to indicate location information of the multimedia to be controlled in the site control message defined by the H245 protocol. With the present invention, the location information of the multimedia to be controlled is carried in the control message of the remote presentation system site, so that the MCU can obtain the location of the multimedia to be controlled, thereby solving the original H245 conference control message using the H323 protocol. The location of the audio/video media is controlled, so that the problem of the site control of the telepresence system cannot be realized, and thus the multimedia of different positions of the telepresence system can be controlled. BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are set to illustrate,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, In the drawings: FIG. 1 is a flowchart of a method for controlling a site of a telepresence system according to an embodiment of the present invention; FIG. 2 is a schematic diagram of networking of a telepresence system according to an embodiment of the present invention; FIG. 4 is a flowchart of a multi-level MCU broadcast control of a telepresence system according to Embodiment 2 of the present invention; FIG. 5 is a flowchart of single-stage MCU selection control according to Embodiment 3 of the present invention; FIG. 6 is a flowchart of multi-level MCU selection control according to Embodiment 4 of the present invention; FIG. 7 is a remote according to an embodiment of the present invention. A schematic structural diagram of a control device presenting a system site; and FIG. 8 is a schematic structural diagram of a control device of a remote presentation system site according to a preferred embodiment of the present invention. BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict. 1 is a flowchart of a method for controlling a site of a remote presentation system according to an embodiment of the present invention. As shown in FIG. 1 , the method mainly includes the following steps: Step S102: A Micro Control Unit (MCU) receives a remote presentation. a control message of the system site, where the control message carries location information of the multimedia to be controlled in the site where the control is to be performed; for example, in the networking structure of the remote presentation system shown in FIG. 2, the main MCU controls three Venue: Venue 1, Venue 2 and Venue 3, where Venue 1 is a three-screen (left, mid, and right screen) venue, which consists of three participating terminals. Venue 2 is also a three-screen (left screen, middle screen, and Right screen) The conference site consists of three conference terminals. The conference site 3 is a single-screen conference site. Two sites are controlled from the MCU: site 4 and site 5, where site 4 and site 5 are three-screen venues. The conference site 1 can send the control message of the telepresence system site to the main MCU. If the multimedia of the mid-screen of the site 2 needs to be controlled, the control message can carry the location information indicating the multimedia to be controlled in the site 2 (ie, indicating the multimedia) For the mid-screen of the site 2, that is, the multimedia is the multimedia of the road where the middle screen of the site 2 is located, for example, the screens in the site 2 can be numbered, and the left screen and the middle screen are respectively represented by 0, 1, 2 And the right screen, the location information of the multimedia to be controlled carried in the control message is "1" in the site where the control is located. The multimedia to be controlled may include, but is not limited to: various media included in traditional conference television such as audio media and/or video media, LSD media, that is, audio or images. The foregoing control message received by the MCU may be directly sent by the site controlled by the MCU, or may be sent by the upper-level MCU. For example, when the first site needs to perform multimedia control on the site in the conference, the MCU may send the MCU to the MCU. The control message, the MCU receives the control message, and determines whether the controlled site in which the control message requests the multimedia is located is the site of the MCU of the current level, and if so, the MCU processes and controls the The control operation corresponding to the message; if not, the control message is delivered to the MCU where the controlled conference site is located, and the control message is received and processed by the MCU where the controlled conference site is located. In a preferred embodiment of the present invention, the foregoing control message may be implemented by adding a field for indicating the location information of the multimedia to be controlled in the site control message defined by the H245 protocol. For example, the conference request message (ConferenceRequest), conference response message (ConferenceResponse), conference command (ConferenceCommand), and conference indication (Conferencelndication) defined by the H245 protocol can be extended, and the telepresence broadcast, telepresence cancel broadcast, and remote can be added. The remote presentation system control message is presented, such as, but not limited to, a remote presentation broadcast, a remote presentation cancel broadcast, and a remote presentation selection, and may also be other related control messages. The principle of the telepresence system control message definition is to expand the location information description based on the message such as the terminal broadcast ( makeTerminalBroadcaster ) selected by the H245 protocol. Step S104: The MCU performs a control operation corresponding to the control message on the multimedia corresponding to the location information. In a preferred embodiment of the present invention, after the MCU performs the foregoing control operation, the MCU may further return a control response message to the sender of the control message, where the control response message carries the result of the control operation. Preferably, if the sender of the control message is the upper-level MCU (that is, the control message is sent to the MCU of the controlled site via the upper-level MCU), the control response message may further carry the location of the multimedia to be controlled in the site where the control is located. information. For example, if the control message received by the MCU is from the site that it controls, the MCU returns a control response message to the site. If the control message received by the MCU is from the upper-level MCU, the MCU returns the control response message to the upper-level MCU. The control response message is returned by the upper-level MCU to the site where the control message is sent. In a preferred embodiment of the present invention, the control response message is implemented by adding a field for indicating the location information of the multimedia to be controlled in the site where the content is to be controlled, in the site control response message defined by the H245 protocol. In a preferred embodiment of the embodiments of the invention, the MCU performs different control flows for different control messages. For example, if the control message includes: a remote presentation broadcast message, the MCU performing the control operation corresponding to the control message on the multimedia corresponding to the location information may include the following steps: Step 1: The MCU searches for the remote presentation Broadcasting a message requesting a venue to be broadcast; Step 2: The MCU determines whether the broadcasted site is a site of the MCU of the current level. If yes, go to step 3. If not, go to step 5. Step 3: Determine whether the broadcasted site contains the site. The multimedia corresponding to the location information, if yes, performing step 4; step 4, broadcasting the multimedia corresponding to the location information to all terminals in the conference; step 5, transmitting the remote presentation broadcast message to the subordinate MCU And determining, by the lower-level MCU, whether the multimedia corresponding to the location information is included in the broadcasted conference site, and if yes, broadcasting the multimedia corresponding to the location information to all terminals in the conference. If the control message includes: a remote presentation selection message, where the remote presentation selection message carries the destination location information of the selected conference site and the location information of the source multimedia selected to view the conference site. And the MCU performing the control operation corresponding to the control message on the multimedia corresponding to the location information may include the following steps: Step 1: The MCU searches for the selected viewing site; Step 2, the MCU determines whether the selected viewing site is a site of the MCU of the current level, if yes, determining whether the selected viewing site contains multimedia corresponding to the location information of the source multimedia, and if yes, switching the multimedia corresponding to the location information of the source multimedia And the conference terminal corresponding to the destination location information; Step 3, the selected conference site is a site of the lower-level MCU, and the remote presentation selection message is delivered to the lower-level MCU, and the lower-level MCU determines the Whether the multimedia corresponding to the location information of the source multimedia is included in the selected conference site, and if yes, the multimedia corresponding to the location information of the source multimedia is switched to the conference terminal corresponding to the destination location information. If the control message includes: a remote presentation cancellation broadcast message, where the remote presentation cancellation broadcast message carries location information of the multimedia that is cancelled. And the MCU performing the control operation corresponding to the control message on the multimedia corresponding to the location information may include the following steps: Step 1: The MCU searches for the cancelled broadcast site; Step 2, the MCU determines that the broadcast is cancelled. Whether the site is the site of the MCU of the current level, and if yes, determining whether the multimedia site corresponding to the location information of the multimedia is included in the cancelled broadcast site, and if yes, canceling the multimedia corresponding to the location information of the multimedia Broadcasting; Step 3: If the conference site that is canceled is the site of the lower-level MCU, the remote presentation selection message is transmitted to the lower-level MCU, and the lower-level MCU determines whether the conference site that is cancelled is Contain and The multimedia corresponding to the location information of the multimedia, if yes, canceling the broadcast of the multimedia corresponding to the location information of the multimedia. According to the foregoing method provided by the embodiment of the present invention, when the site wants to control the current conference, the site sends a corresponding remote presentation system control message to the MCU, such as a remote presentation broadcast. After receiving the message, the MCU performs the message according to the specific message content. Control the action and feedback the execution result to the venue. In a cascade conference, if the site controls the non-local conference site, the MCU of the current level needs to forward the telepresence system control message sent from the site to the controlled conference site in the MCU, and the corresponding control command is executed by the controlled conference site on the MCU. The execution result is fed back to the site where the control action is performed by the superior MCU. It compensates for the inability of the H323 telepresence system site to control the conference. It achieves the effect of flexible control of the audio/video stream at different locations of the conference, and can control the remote presentation system cascade conference to improve the telepresence system. Ease of use and user experience. The technical solution provided by the embodiment of the present invention is described below by taking the networking structure of the remote presentation system shown in FIG. 2 as an example. Embodiment 1 This embodiment uses a three-screen venue 1 to request broadcast of a three-screen conference site 2 image as an example for description. This embodiment is extended based on the makeTerminalBroadcaster and makeTerminalBroadcasterResponse messages of the H245 protocol. In the two control messages, the location description information Location is defined, and the tpsmakeTerminalBroadcaster and tpsmakeTerminalBroadcasterResponse messages are defined. Wherein, the location of ± Zeng B is used to indicate the location information of the broadcasted image at the site where it is located. It can be defined as 0 to broadcast all screen images, 1 to broadcast left screen image, 2 to broadcast mid screen image, 3 to broadcast right The screen image, and if a new screen is added to the venue, the value can be expanded. In a preferred embodiment of this embodiment, tpsmakeTerminalBroadcaster and tpsmakeTerminalBroadcasterResponse can be defined as: tpsmakeTerminalBroadcaster: := SEQUENCE

makeTerminalBroadcaster TerminalLabel. location Location, tpsmakeTerminalBroadcasterResponse ： := SEQUENCE makeTerminalBroadcaster TerminalLabel. location Location, tpsmakeTerminalBroadcasterResponse : := SEQUENCE

makeTerminalBroadcasterResponse makeTerminalBroadcasterResponse. location Location, makeTerminalBroadcasterResponse makeTerminalBroadcasterResponse. location Location,

Location INTEGER (0..255)。 图 3是本实施例中对远程呈现系统会场进行控制的流程图， 如图 3所示， 主要包 括以下步骤： 步骤 301， 会场 1向主 MCU发送 tpsmakeTerminalBroadcaster (远程呈现广播）消 息， 该消息中的终端标识 （TerminalLabel) 为被广播终端的 TerminalLabel, 在本实施 例为会场 2的 TerminalLabel; 另外， 该消息中新增的 Location为被广播图像在其所在 会场的位置信息， 以指示 MCU需要广播哪一路图像，本实施例中由于是要广播会场 2 的中屏， 因此， 该消息中 Location的取值为 2。 步骤 302，主 MCU收到上述 tpsmakeTerminalBroadcaster消息，根据 TerminalLabel 查找被广播会场， 其中， 可以有以下三种结果： 没有找到被广播会场、 被广播会场为 本级 MCU会场及被广播会场为非本级 MCU会场。 如 果 没有 找 到 被广 播 终端 ， 进 入 步 骤 303 ， 给会场 1 回 tpsmakeTerminalBroadcasterResponse (远程呈现广播响应） 消息， 其中 的 makeTerminalBroadcasterResponse字段为 deniedMakeTerminalBroadcaster, 指不广播失 败。 如果被广播会场为本级 MCU会场，主 MCU需要在原有广播流程基础上，查找被 广播会场是否包含 Location位置的视频， 如果不包含则进入步骤 303， 向会场 1返回 tpsmakeTerminalBroadcasterResponse 消息， 其中的 makeTerminalBroadcasterResponse 字段为 deniedMakeTerminalBroadcaster;如果包含，则主 MCU将被广播终端的 Location 位置的图像广播到与会所有终端的 Location位置， 并进入步骤 303， 向会场 1 返回 tpsmakeTerminalBroadcasterResponse 消息， 其中的 makeTerminalBroadcasterResponse 字段为 grantedMakeTerminalBroadcaster, 指示广播成功， 本实施例中， 主 MCU将会 场 2的中屏图像切换给会场 1、 从 MCU级联口级联中屏。 如果被广播会场为非本级 MCU会场的情况， 则按照下面实施例二所示的远程呈 现系统多级 MCU广播控制流程处理。 步骤 303，主 MCU向会场 1回 tpsmakeTerminalBroadcasterResponse消息， Location 的 值 为 tpsmakeTerminalBroadcaster 所 带 的 Location 的 值 ， makeTerminalBroadcasterResponse的值根据步骤 302中的结果而定。 流程结束。 如果使用现有 H245的 makeTerminalBroadcaster/makeTerminalBroadcasterResponse 消息， 由于消息中没有包含位置信息描述，所以主 MCU收到 makeTerminalBroadcaster 消息后， 无法知道广播会场 2的左屏图像、 中屏图像、 右屏图像还是所有屏图像。 而 本实施例中通过在 makeTerminalBroadcaster增加描述广播的图像在被广播会场的位置 描述信息， 使得 MCU可以获取需要广播会场 2的中屏图像。 实施例二 本实施例以会场 1 广播会场 4 中屏图像为例进行说明， 其中， tpsmakeTerminalBroadcaster tpsmakeTerminalBroadcasterResponse消息的描述与实施例 一中描述的一致。 图 4是本实施例中对远程呈现系统会场进行控制的流程图， 如图 4所示， 在本实 施例中对远程呈现会场进行控制主要包括以下步骤： 步骤 401， 与步骤 301 相同， 本实施例中 tpsmakeTerminalBroadcaster 中的 TerminalLabel为会场 4的 TerminalLabel, 由于是要广播会场 4的中屏， 所以 Location 的值为 2。 步骤 402， 主 MCU收到 tpsmakeTerminalBroadcaster消息， 根据 TerminalLabel查 找被广播会场， 如果被广播会场为非本级 MCU会场， 则进入第 404步， 否则执行步 骤 403 ; 步骤 403， 等同于步骤 302。 步骤 404， 主 MCU将 tpsmakeTerminalBroadcaster 消息传递给被广播终端所在 MCU, 本实施例中为从 MCU。 步骤 405， 从 MCU收到 tpsmakeTerminalBroadcaster消息的处理， 其处理与步骤Location INTEGER (0..255). FIG. 3 is a flowchart of controlling the site of the remote presentation system in the embodiment. As shown in FIG. 3, the method mainly includes the following steps: Step 301: Site 1 sends a tpsmakeTerminalBroadcaster message to the primary MCU, where the message is The terminal label (TerminalLabel) is the TerminalLabel of the broadcast terminal. In this embodiment, it is the TerminalLabel of the site 2. In addition, the newly added Location in the message is the location information of the broadcasted image at the site where it is located, to indicate which way the MCU needs to broadcast. In this embodiment, since the middle screen of the conference site 2 is to be broadcast, the location value of the location in the message is 2. Step 302: The main MCU receives the tpsmakeTerminalBroadcaster message and searches for the broadcast site according to the TerminalLabel. The following three results are obtained: The broadcast site is not found, the broadcast site is the MCU site, and the broadcast site is the non-level MCU. Meeting place. If the broadcast terminal is not found, go to step 303 and return to the site 1 a tpsmakeTerminalBroadcasterResponse message, where the makeTerminalBroadcasterResponse field is deniedMakeTerminalBroadcaster, indicating that the broadcast fails. If the broadcast site is the MCU site, the primary MCU needs to find the video of the location of the broadcast site based on the original broadcast process. If not, go to step 303 and return to the site 1 the tpsmakeTerminalBroadcasterResponse message, where the makeTerminalBroadcasterResponse field is displayed. DeniedMakeTerminalBroadcaster; if included, the main MCU will be the location of the broadcast terminal The image of the location is broadcasted to the location of all the terminals in the conference, and the process proceeds to step 303. The message is returned to the site 1 and the message is sent to the site 1. The makeTerminalBroadcasterResponse field is the grantedMakeTerminalBroadcaster, indicating that the broadcast is successful. In this embodiment, the master MCU will switch the mid-screen image of the field 2. To the venue 1, from the MCU cascade port cascaded in the screen. If the broadcast site is a non-level MCU site, the multi-level MCU broadcast control process is performed according to the remote presentation system shown in the second embodiment. In step 303, the primary MCU returns a tpsmakeTerminalBroadcasterResponse message to the site. The value of the Location is the value of the Location of the tpsmakeTerminalBroadcaster. The value of the makeTerminalBroadcasterResponse is determined according to the result in the step 302. The process ends. If the existing H245's makeTerminalBroadcaster/makeTerminalBroadcasterResponse message is used, since the message does not contain the location information description, the master MCU cannot know the left screen image, the mid screen image, the right screen image or all the screen images of the broadcast site 2 after receiving the makeTerminalBroadcaster message. . In the embodiment, the position description information of the broadcasted site in the broadcast site is added in the makeTerminalBroadcaster, so that the MCU can acquire the mid-screen image that needs to broadcast the site 2. Embodiment 2 This embodiment is described by taking the screen image of the site 1 broadcast site 4 as an example. The description of the tpsmakeTerminalBroadcaster tpsmakeTerminalBroadcasterResponse message is consistent with that described in the first embodiment. FIG. 4 is a flowchart of controlling the remote presentation system site in the embodiment. As shown in FIG. 4, controlling the remote presentation site in the embodiment mainly includes the following steps: Step 401, the same as step 301, the implementation In the example, the TerminalLabel in the tpsmakeTerminalBroadcaster is the TerminalLabel of the site 4. Since the mid-screen of the site 4 is to be broadcast, the value of the Location is 2. Step 402: The main MCU receives the tpsmakeTerminalBroadcaster message, and searches for the broadcasted site according to the TerminalLabel. If the broadcast site is a non-level MCU site, the process proceeds to step 404. Otherwise, step 403 is performed. Step 403 is equivalent to step 302. Step 404: The primary MCU delivers the tpsmakeTerminalBroadcaster message to the MCU where the broadcast terminal is located, which is the slave MCU in this embodiment. Step 405: Receive a process of receiving a tpsmakeTerminalBroadcaster message from the MCU, and processing and stepping the same

402相似。 本实施例中从 MCU将会场 4的中屏图像进行广播。 步骤 406， 从 MCU给主 MCU发送 tpsmakeTerminalBroadcasterResponse消息。本 实施例中从 MCU给主 MCU发送的 tpsmakeTerminalBroadcasterResponse 消息中， Location 的 值 为 2 , makeTerminalBroadcasterResponse 为 grantedMakeTerminalBroadcaster。 步骤 407，主 MCU收到 tpsmakeTerminalBroadcasterResponse消息，将此消息透传 给会场 1。 步骤 408， 主 MCU 收到的 tpsmakeTerminalBroadcasterResponse 消息中 makeTerminalBroadcasterResponse为 grantedMakeTerminalBroadcaster , 主 MCU将从 MCU 的 Location位置的图像广播给主 MCU会议上的所有会场。 流程结束。 实施例三 本实施例以会场 1选看会场 2中屏图像为例进行说明。 本实施例在 H245协议的 sendThisSource (选看请求消息）、 sendThisSourceResponse (选看响应消息） 消息的基 础上增加了位置描述信息 sourceLocation (源位置， 即被选看的多媒体在其所在会场中 的 位 置 信 息 ) 、 destinationLocation ， 定 义 了 tp ssendThi s S ource 、 tpssendThisSourceResponse消息。 在本实施例的一个优选实施方式中， sourceLocation类型为整数， 含义为被选看会 场的源位置信息， 其中， 0表示所有屏， 1表示左屏， 2表示中屏， 3表示右屏， 可扩 展； destinationLocation类型为整数,含义为被选看会场的目的位置信息， 0表示所有屏， 1表示左屏， 2表示中屏， 3表示右屏， 可扩展。 该消息明确的说明了需要将被选看会 场 sourceLocation位置的图像切换给选看会场的 destinationLocation屏位置图像，例如， 在本实施例的一个优选实施方式中， tpsSendThisSource禾 P tpsSendThisSourceResponse 可以具体定义如下： tpsSendThisSource ::= SEQUENCE sendThisSource TerminalLabel, 402 is similar. In this embodiment, the mid-screen image of the field 4 is broadcast from the MCU. Step 406: Send a tpsmakeTerminalBroadcasterResponse message from the MCU to the primary MCU. In the tpsmakeTerminalBroadcasterResponse message sent from the MCU to the main MCU in this embodiment, the Location value is 2, and the makeTerminalBroadcasterResponse is the grantedMakeTerminalBroadcaster. Step 407: The main MCU receives the tpsmakeTerminalBroadcasterResponse message, and transparently transmits the message to the site 1. Step 408: The makeTerminalBroadcasterResponse message of the tpsmakeTerminalBroadcasterResponse message received by the main MCU is the grantedMakeTerminalBroadcaster, and the main MCU broadcasts the image of the location of the MCU to all the sites in the main MCU conference. The process ends. Embodiment 3 This embodiment is described by taking the screen image of the conference site 2 as the example. In this embodiment, the location description information sourceLocation (source location, that is, the location information of the selected multimedia in the conference site) is added on the basis of the sendThisSource (request request message) and sendThisSourceResponse (select response message) messages of the H245 protocol. ), destinationLocation , defines the tp ssendThi s S ource , tpssendThisSourceResponse message. In a preferred embodiment of the present embodiment, the sourceLocation type is an integer, meaning that the source location information of the selected site is selected, where 0 indicates all screens, 1 indicates a left screen, 2 indicates a middle screen, and 3 indicates a right screen. Extension; destinationLocation type is an integer, meaning the destination location information of the selected site, 0 means all screens, 1 means left screen, 2 means middle screen, 3 means right screen, expandable. The message clearly indicates that the image of the location location of the site to be selected is switched to the location location screen image of the selected site. For example, in a preferred embodiment of the embodiment, tpsSendThisSource and P tpsSendThisSourceResponse may be specifically defined as follows: tpsSendThisSource ::= SEQUENCE sendThisSource TerminalLabel,

sourceLocation INTEGER (0 .255), sourceLocation INTEGER (0 .255),

-…被选看会场的源位置信息  -... was selected to see the source location information of the venue

destinationLocation INTEGER (0..255),destinationLocation INTEGER (0..255),

-…被选看会场目的位置信息 -... was selected to see the location information of the venue

} }

tpsSendThisSourceResponse ::= SEQUENCE ι tpsSendThisSourceResponse ::= SEQUENCE ι

sendThisSourceResponse CHOICE granted SendThisSource NULL, deniedSendThisSource NULL,  sendThisSourceResponse CHOICE granted SendThisSource NULL, deniedSendThisSource NULL,

sourceLocation INTEGER (0..10), sourceLocation INTEGER (0..10),

-…被选看会场的源位置信息 -... was selected to see the source location information of the venue

destinationLocation INTEGER (0..10), destinationLocation INTEGER (0..10),

-…被选看会场目的位置信息 图 5为本实施例中执行远程呈现系统会场控制的流程图， 如图 5所示， 主要可以 包括以下步骤： 步骤 501， 会场 1 给主 MCU 发送 tpsSendThisSourceRequest 消息， 其中， TerminalLabel对应的是被选看会场的 TerminalLabel, sourceLocation为被选看会场的 源位置信息， destinationLocation为被选看会场目的位置信息。 本实施例中， 由于会场 1中屏要选看会场 2的中屏图像，因此， tpsSendThisSourceRequest消息中 TerminalLabel 为会场 2的 TerminalLabel, sourceLocation为 2, destinationLocation为 2。 步骤 502， 主 MCU收到 tpsSendThisSourceRequest消息后， 根据 terminalLabel寻 找被选看会场， 例如， 可能有以下三种结果： 没有找到被选看会场、 被选看会场为本 级 MCU会场、 被选看会场为非本级 MCU会场。 其中， 如果没有寻找到被选看会场， 则直接进入步骤 503， 给会场 1 发送 tp s S endThi s S ourceResponse 消 息 ， 其 中 的 sendThisSourceResponse 为 denied S endThi s S ource。 如果被选看会场为本级 MCU会场， 主 MCU则对 tpsSendThisSourceRequest消息 中的 sourceLocation和 destinationLocation值的有效性进行判断， 如果被选看会场存在 sourceLocation屏位置的图像、选看会场存在 destinationLocation屏位置图像， MCU则 认为 sourceLocation禾口 destinationLocation值有效，主 MCU贝1 J！寺被选会场 sourceLocation 屏位置的图像切换到选看会场 destinationLocation屏位置， 并进入步骤 503， 给会场 1 发送 tpsSendThisSourceResponse 消息， 该消息中的 sendThisSourceResponse 为 granted SendThis Source; 如果 sourceLocation禾口 destinationLocation值无效， 贝 U进入步 骤 503 ， 给会场 1 发送 tpsSendThisSourceResponse 消息， 该消息中 的 sendThisSourceResponse为 deniedSendThisSource。 如果被选看会场为非本级 MCU会场， 则按照下述实施例四描述的远程呈现系统 多级 MCU选看控制流程处理。 本实施例中， 主 MCU将会场 2中屏图像切换给了会场 1中屏。 步骤 503， MCU 主给会场 1 发送 tpsSendThisSourceResponse 消息， 消息中的 sourceLocation 禾口 destinationLocation 的 值 同 tps SendThis Source 消 息 中 的 sourceLocation禾口 destinationLocation值相同， 消息中 sendThisSourceResponse贝 U根据 步骤 502的处理结果而定。 流程结束。 如果使用现有 H245的 sendThisSource、 sendThisSourceResponse消息， 由于消息 中没有包含位置信息描述， 所以主 MCU收到 sendThisSource消息后， 无法知道将会 场 2 的那一位置图像切换给会场 1 的哪一个位置。 在本实施例， 通过在 tpssendThisSource指明被选看的源位置信息， 以及选看的目的位置信息， 从而可以实 现将会场中的具体一路多媒体切换给另一会场的具体某屏终端。 实施例四 本实施例以三屏会场 1 选看三屏会场 4 为例进行说明， 本实施例中 tpsSendThisSourceRequest消息和 tpsSendThisSourceResponse消息定义与实施例三中定 义相同， 具体不再赘述。 图 6是本实施例中对远程呈现系统会场选看控制的流程图， 如图 6所示， 主要包 括以下步骤： 步骤 601， 与步骤 501相同。 本实施例中， 会场 1的中屏选看会场 4中屏， tpsSendThisSourceRequest消息中的 TerminalLabel为会场 4的 TerminalLabel, sourceLocation为 2, destinationLocation为 2。 步骤 602， 主 MCU 收到 tpsSendThisSourceRequest 消息， 根据消息中的 TerminalLabel来查找被选看会场， 如果被选看会场为非本级 MCU会场， 主 MCU判 断需要将 tpsSendThisSourceRequest消息发送给被选看会场所在的 MCU， 本实施例中 为主 MCU将消息发送给从 MCU， 执行步骤 604， 否则按照步骤 502处理， 并执行步 骤 603。 步骤 603， 与步骤 503相同。 步骤 604， 主 MCU将 tpsSendThisSourceRequest消息发送给从 MCU。 步骤 605， 与步骤 602相似， 本实施例中从 MCU将会场 4中屏图像切换给 MCU 主中屏。 步骤 606， 与步骤 503相似， 本实施例中从 MCU将 tpsSendThisSourceResponse 消息发送给主 MCU。 步骤 607， 主 MCU收到从 MCU发来的 tpsSendThisSourceResponse消息， 直接将 该 消 息 传 递 给 会 场 1 。 同 时 对 tpsSendThisSourceResponse 消 息 中 sendThisSourceResponse 的 值进行判 断 ， 如 果 sendThisSourceResponse 为 grantedSendThisSource ， 进 入 步 骤 609 ； 如 果 sendThisSourceResponse 为 deniedSendThisSource, 流程结束。 步骤 608， 主 MCU根据从 MCU发来的 tpsSendThisSourceResponse消息， 将从 MCU sourceLocation位置的图像切换给会场 IdestinationLocation位置上。 流程结束。 图 7是根据本发明实施例的远程呈现系统会场的控制装置的结构示意图， 该装置 位于 MCU， 如图 7所示， 该装置可以包括： 接收模块 10， 设置为接收远程呈现系统 会场的控制消息， 其中， 该控制消息中携带有需要控制的多媒体在其所在会场中的位 置信息； 执行模块 20与接收模块 10连接， 设置为对与所述位置信息对应的多媒体执 行与所述控制消息对应的控制操作。 在本发明实施例的一个优选实施方式中， 如图 8所示， 该装置还可以包括： 响应 模块 30与执行模块 20连接， 设置为向所述控制消息的发送方返回控制响应消息， 其 中， 所述控制响应消息中携带有所述控制操作的结果， 优选地， 如果所述控制消息的 发送方为上级 MCU，则所述控制响应消息中还携带有所述需要控制的多媒体在其所在 会场中的位置信息。 在本发明实施例的一个优选实施方式中， 携带有所述位置信息的上述控制响应消 息可以通过在 H245协议定义的会场控制响应消息中增加设置为指示所述需要控制的 多媒体的位置信息的字段实现。 在本发明实施例的另一个优选实施方式中， 上述控制消息可以通过在 H245协议 定义的会场控制消息中增加设置为指示所述需要控制的多媒体的位置信息的字段实 现。 在本发明实施例的优选实施方式中， 该装置的各个模块可以按照上述方法实施例 的描述执行控制过程， 具体不再赘述。 从以上的描述中， 可以看出， 在本发明实施例中， 当会场想要对当前会议进行控 制时，通过会场给 MCU发送相应的远程呈现系统控制消息，比如远程呈现广播， MCU 接收到消息后， 根据具体消息内容执行控制动作， 并将执行结果反馈给会场。 级联会 议中， 如果会场对非本级会议会场进行控制， 本级 MCU需要将会场发来的远程呈现 系统控制消息转发给被控会场所在 MCU， 由被控会场所在 MCU执行相应控制命令， 同时将执行结果通过上级 MCU 反馈给执行控制动作的会场。 弥补了 H323远程呈现 系统会场无法对会议进行控制的不足， 达到了会场对会议不同位置的音 /视频码流灵活 控制的效果， 并且可以对远程呈现系统级联会议进行控制， 提高了远程呈现系统的易 用性和用户体验。 显然， 本领域的技术人员应该明白， 上述的本发明的各模块或各步骤可以用通用 的计算装置来实现， 它们可以集中在单个的计算装置上， 或者分布在多个计算装置所 组成的网络上， 可选地， 它们可以用计算装置可执行的程序代码来实现， 从而， 可以 将它们存储在存储装置中由计算装置来执行， 并且在某些情况下， 可以以不同于此处 的顺序执行所示出或描述的步骤， 或者将它们分别制作成各个集成电路模块， 或者将 它们中的多个模块或步骤制作成单个集成电路模块来实现。 这样， 本发明不限制于任 何特定的硬件和软件结合。 以上所述仅为本发明的优选实施例而已， 并不用于限制本发明， 对于本领域的技 术人员来说， 本发明可以有各种更改和变化。 凡在本发明的精神和原则之内， 所作的 任何修改、 等同替换、 改进等， 均应包含在本发明的保护范围之内。 -... was selected to see the location information of the venue FIG. 5 is a flowchart of performing remote control system site control in the embodiment. As shown in FIG. 5, the method may include the following steps: Step 501: Site 1 sends a tpsSendThisSourceRequest message to the primary MCU, where the TerminalLabel is selected to be selected. TerminalLabel of the site, sourceLocation is the source location information of the selected site, and destinationLocation is the location information of the selected site. In this embodiment, the mid-screen image of the site 2 is selected in the site 1 field. Therefore, the TerminalLabel in the tpsSendThisSourceRequest message is the TerminalLabel of the site 2, the sourceLocation is 2, and the destinationLocation is 2. Step 502: After receiving the tpsSendThisSourceRequest message, the main MCU searches for the selected site according to the terminalLabel. For example, the following three results may be obtained: The selected site is not selected, the site is selected as the MCU site, and the site is selected. Non-level MCU site. If the selected site is not found, go directly to step 503 and send a tp s S endThi s S ourceResponse message to the site 1, where the sendThisSourceResponse is denied S endThi s S ource. If the site is selected as the MCU site, the main MCU judges the validity of the sourceLocation and destinationLocation values in the tpsSendThisSourceRequest message. If the location of the sourceLocation screen is selected, the destination location screen image is selected. MCU thinks that sourceLocation and destinationLocation value is valid, the main MCU shell 1 J! The image of the sourceLocation screen position of the selected site is switched to the location of the destination location screen, and the process proceeds to step 503, and a tpsSendThisSourceResponse message is sent to the site 1, and the sendThisSourceResponse is the granted SendThis Source; if the sourceLocation and the destinationLocation value are invalid, the U Go to step 503 and send a tpsSendThisSourceResponse message to site 1. The sendThisSourceResponse in the message is deniedSendThisSource. If the selected site is a non-level MCU site, the multi-level MCU selection control process described in the fourth embodiment below is performed. In this embodiment, the main MCU switches the screen image of the field 2 to the screen of the conference site 1. Step 503: The MCU master sends a tpsSendThisSourceResponse message to the site 1, and the value of the sourceLocation and the destinationLocation in the message is the same as the sourceLocation destinationLocation value in the tps SendThis Source message, and the sendThisSourceResponse in the message is determined according to the processing result of step 502. The process ends. If the sendThisSource and sendThisSourceResponse messages of the existing H245 are used, the location information description is not included in the message. Therefore, after receiving the sendThisSource message, the master MCU cannot know which location of the site 1 the image of the field 2 is switched to. In this embodiment, by specifying the selected source location information and the selected destination location information in tpssendThisSource, it is possible to switch a specific one-way multimedia in the field to a specific screen terminal of another conference site. The fourth embodiment of the present invention is described by using the three-screen conference site 1 as an example. The tpsSendThisSourceRequest message and the tpsSendThisSourceResponse message are the same as those in the third embodiment, and are not described here. FIG. 6 is a flowchart of the site selection control of the remote presentation system in the embodiment. As shown in FIG. 6, the method mainly includes the following steps: Step 601 is the same as step 501. In this embodiment, the mid-screen of the site 1 is selected to view the screen in the site 4, and the TerminalLabel in the tpsSendThisSourceRequest message is the TerminalLabel of the site 4, the sourceLocation is 2, and the destinationLocation is 2. Step 602: The main MCU receives the tpsSendThisSourceRequest message, and searches for the selected site according to the TerminalLabel in the message. If the site is selected as the non-level MCU site, the main MCU determines that the tpsSendThisSourceRequest message needs to be sent to the selected MCU. In this embodiment, the message is sent to the slave MCU by the master MCU, and step 604 is performed. Otherwise, the process is performed according to step 502, and step 603 is performed. Step 603 is the same as step 503. In step 604, the primary MCU sends a tpsSendThisSourceRequest message to the secondary MCU. Step 605: Similar to step 602, in this embodiment, the screen image of the field 4 is switched from the MCU to the MCU main screen. Step 606, similar to step 503, in this embodiment, the tpsSendThisSourceResponse message is sent from the MCU to the primary MCU. Step 607: The primary MCU receives the tpsSendThisSourceResponse message sent from the MCU, and directly delivers the message to the conference site 1. At the same time, the value of sendThisSourceResponse in the tpsSendThisSourceResponse message is judged. If sendThisSourceResponse is grantedSendThisSource, go to step 609; if sendThisSourceResponse is deniedSendThisSource, the process ends. Step 608: The master MCU switches the image from the MCU sourceLocation location to the site IdestinationLocation according to the tpsSendThisSourceResponse message sent from the MCU. The process ends. FIG. 7 is a schematic structural diagram of a remote control system site control device according to an embodiment of the present invention. The device is located in an MCU. As shown in FIG. 7, the device may include: a receiving module 10 configured to receive a control message of a remote presentation system site. The control message carries the location information of the multimedia to be controlled in the conference site; the execution module 20 is connected to the receiving module 10, and is configured to perform, corresponding to the control message, the multimedia corresponding to the location information. Control operation. In a preferred embodiment of the present invention, as shown in FIG. 8, the apparatus may further include: the response module 30 is connected to the execution module 20, and is configured to return a control response message to the sender of the control message, where The control response message carries the result of the control operation. Preferably, if the sender of the control message is a higher-level MCU, the control response message further carries the multimedia to be controlled at the site where the control message is located. Location information in . In a preferred embodiment of the present invention, the control response message carrying the location information may be added to a field that is set to indicate the location information of the multimedia to be controlled by using the site control response message defined by the H245 protocol. achieve. In another preferred embodiment of the present invention, the foregoing control message may be implemented by adding a field set to indicate the location information of the multimedia to be controlled in the site control message defined by the H245 protocol. In the preferred embodiment of the present invention, the various modules of the device may perform the control process according to the description of the foregoing method embodiments, and details are not described herein. From the above description, it can be seen that, in the embodiment of the present invention, when the site wants to control the current conference, the corresponding remote presentation system control message is sent to the MCU through the site, such as a remote presentation broadcast, and the MCU receives the message. After that, the control action is performed according to the specific message content, and the execution result is fed back to the site. Cascade In the discussion, if the site controls the non-level conference site, the MCU of the current level needs to forward the telepresence system control message sent from the site to the controlled conference site in the MCU, and the corresponding control command is executed by the controlled conference site in the MCU, and will be executed at the same time. The result is fed back to the site where the control action is performed by the superior MCU. It compensates for the inability of the H323 telepresence system site to control the conference. It achieves the effect of flexible control of the audio/video stream at different locations of the conference, and can control the remote presentation system cascade conference to improve the telepresence system. Ease of use and user experience. Obviously, those skilled in the art should understand that the above modules or steps of the present invention can be implemented by a general-purpose computing device, which can be concentrated on a single computing device or distributed over a network composed of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device, such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein. The steps shown or described are performed, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps are fabricated as a single integrated circuit module. Thus, the invention is not limited to any specific combination of hardware and software. The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

Claims

权 利 要 求 书 Claim 1. 一种远程呈现系统会场的控制方法， 包括： A method for controlling a site of a telepresence system, including: 多点控制单元 MCU接收远程呈现系统会场的控制消息， 其中， 所述控制 消息中携带有需要控制的多媒体在其所在的会场中的位置信息；  The multi-point control unit receives the control message of the remote presentation system site, where the control message carries the location information of the multimedia to be controlled in the site where the multimedia device is to be controlled; 所述 MCU对与所述位置信息对应的多媒体执行与所述控制消息对应的控 制操作。  The MCU performs a control operation corresponding to the control message on the multimedia corresponding to the location information. 2. 根据权利要求 1所述的方法， 其中， 所述 MCU接收远程呈现系统会场的控制 消息包括： 2. The method according to claim 1, wherein the receiving, by the MCU, the control message of the remote presentation system site comprises: 第一会场向其 MCU发送所述控制消息；  The first site sends the control message to its MCU; 所述第一会场的所述 MCU接收所述控制消息， 判断所述控制消息请求控 制的所述多媒体所在的被控会场是否为本级 MCU的会场， 如果是， 则由所述 第一会场的所述 MCU执行所述控制操作；  The MCU of the first site receives the control message, and determines whether the controlled site where the multimedia is controlled by the control message is a site of the MCU of the current level, and if yes, by the first site The MCU performs the control operation; 如果不是， 则将所述控制消息传递给所述被控会场的 MCU， 所述被控会 场的所述 MCU接收所述控制消息， 由所述被控会场的所述 MCU执行所述控 制操作。  If not, the control message is delivered to the MCU of the controlled conference site, and the MCU of the controlled conference site receives the control message, and the MCU of the controlled conference site performs the control operation. 3. 根据权利要求 2所述的方法， 其中， 如果所述被控会场为所述第一会场所在的本级 MCU下的会场， 在所述第 一会场的所述 MCU执行所述控制操作之后， 所述方法还包括： 所述第一会场 的所述 MCU向所述第一会场返回第一控制响应消息， 其中， 所述第一控制响 应消息中携带有所述控制操作的结果； The method according to claim 2, wherein, if the controlled site is a site under the current MCU in the first meeting place, after the MCU of the first site performs the control operation The method further includes: the MCU of the first site returns a first control response message to the first site, where the first control response message carries a result of the control operation; 如果所述被控会场不是所述第一会场所在的本级 MCU下的会场， 在所述 被控会场的所述 MCU执行所述控制操作之后， 所述方法还包括： 所述被控会 场的所述 MCU向所述第一会场的所述 MCU返回第二控制响应消息， 其中， 所述第二控制响应消息中携带有所述控制操作的结果及所述需要控制的多媒体 在其所在会场中的位置信息； 所述第一会场的所述 MCU接收所述第二控制响 应消息， 并将所述第二控制响应消息转发给所述第一会场。 If the controlled site is not the site of the MCU at the first site, after the MCU of the controlled site performs the control operation, the method further includes: the controlled site Returning, by the MCU, a second control response message to the MCU of the first site, where the second control response message carries the result of the control operation and the multimedia to be controlled in the site where the MCU is located The MCU of the first site receives the second control response message, and forwards the second control response message to the first site. 4. 根据权利要求 3所述的方法， 其中， 所述第二控制响应消息通过在 H245协议 定义的会场控制响应消息中增加用于指示所述需要控制的多媒体在其所在会场 中的位置信息的字段实现。 The method according to claim 3, wherein the second control response message is used to add location information indicating that the multimedia to be controlled is located in a site in which it is located in the site control response message defined by the H245 protocol. Field implementation. 5. 根据权利要求 1至 4中任一项所述的方法， 其中， 所述控制消息通过在 H245 协议定义的会场控制消息中增加用于指示所述需要控制的多媒体在其所在会场 中的位置信息的字段实现。 The method according to any one of claims 1 to 4, wherein the control message is added to the location control message defined by the H245 protocol to indicate the location of the multimedia that needs to be controlled in the conference site. Field implementation of the information. 6. 根据权利要求 1至 4中任一项所述的方法， 其中， 所述控制消息包括： 远程呈 现广播消息； The method according to any one of claims 1 to 4, wherein the control message comprises: remotely presenting a broadcast message; 所述 MCU对与所述位置信息对应的多媒体执行与所述控制消息对应的控 制操作包括：  And performing, by the MCU, a control operation corresponding to the control message to the multimedia corresponding to the location information, including: 所述 MCU查找所述远程呈现广播消息请求被广播的会场；  The MCU searches for a conference site where the remote presentation broadcast message request is broadcasted; 所述 MCU判断所述被广播的会场是否为本级 MCU的会场， 如果是， 则 判断所述被广播的会场中是否包含与所述位置信息对应的多媒体， 如果是， 则 将与所述位置信息对应的多媒体广播到与会的所有终端；  Determining, by the MCU, whether the broadcasted site is a site of the MCU, and if yes, determining whether the broadcasted site includes multimedia corresponding to the location information, and if yes, the location The multimedia corresponding to the information is broadcasted to all terminals participating in the conference; 如果所述被广播的会场为下级 MCU的会场， 则将所述远程呈现广播消息 传递给所述下级 MCU，所述下级 MCU判断所述被广播的会场中是否包含与所 述位置信息对应的多媒体， 如果是， 则将与所述位置信息对应的多媒体广播到 与会的所有终端。  If the broadcasted site is a site of a lower-level MCU, the remote presentation broadcast message is delivered to the lower-level MCU, and the lower-level MCU determines whether the broadcasted site includes multimedia corresponding to the location information. If yes, the multimedia corresponding to the location information is broadcast to all terminals participating in the conference. 7. 根据权利要求 1至 4中任一项所述的方法， 其中， 所述控制消息包括： 远程呈 现选看消息， 其中， 所述远程呈现选看消息中携带有选看会场的目的位置信息 以及被选看会场的源多媒体的位置信息； The method according to any one of claims 1 to 4, wherein the control message comprises: a remote presentation selection message, wherein the remote presentation selection message carries a destination location information of the selected conference site And the location information of the source multimedia selected to be viewed at the venue; 所述 MCU对与所述位置信息对应的多媒体执行与所述控制消息对应的控 制操作包括：  And performing, by the MCU, a control operation corresponding to the control message to the multimedia corresponding to the location information, including: 所述 MCU查找所述被选看会场；  The MCU searches for the selected viewing site; 所述 MCU判断所述被选看会场是否为本级 MCU的会场， 如果是， 则判 断所述被选看会场中是否包含与所述源多媒体的位置信息对应的多媒体， 如果 是， 则将与所述源多媒体的位置信息对应的多媒体切换到与所述目的位置信息 对应的与会终端；  Determining, by the MCU, whether the selected site is a site of the MCU, and if yes, determining whether the selected site includes multimedia corresponding to the location information of the source multimedia, and if yes, The multimedia corresponding to the location information of the source multimedia is switched to the conference terminal corresponding to the destination location information; 如果所述被选看会场为下级 MCU的会场， 则将所述远程呈现选看消息传 递给所述下级 MCU，所述下级 MCU判断所述被选看会场中是否包含与所述源 多媒体的位置信息对应的多媒体， 如果是， 则将与所述源多媒体的位置信息对 应的多媒体切换到与所述目的位置信息对应的与会终端。 And if the selected viewing site is a site of the lower-level MCU, the remote presentation selection message is delivered to the subordinate MCU, and the subordinate MCU determines whether the selected viewing site includes the source and the source The multimedia corresponding to the location information of the multimedia, if yes, the multimedia corresponding to the location information of the source multimedia is switched to the participant terminal corresponding to the destination location information. 8. —种远程呈现系统会场的控制装置， 位于 MCU， 所述装置包括： 8. A control device for a telepresence system venue, located in an MCU, the device comprising: 接收模块， 设置为接收远程呈现系统会场的控制消息， 其中， 所述控制消 息中携带有需要控制的多媒体在其所在会场中的位置信息；  The receiving module is configured to receive a control message of the remote presentation system site, where the control message carries location information of the multimedia to be controlled in the site where the control is located; 执行模块， 设置为对与所述位置信息对应的多媒体执行与所述控制消息对 应的控制操作。  And an execution module, configured to perform a control operation corresponding to the control message on the multimedia corresponding to the location information. 9. 根据权利要求 8所述的装置， 其中， 所述装置还包括： 响应模块， 设置为向所 述控制消息的发送方返回控制响应消息， 其中， 所述控制响应消息中携带有所 述控制操作的结果，如果所述控制消息的发送方为上级 MCU，则所述控制响应 消息中还携带有所述需要控制的多媒体在其所在会场中的位置信息。 The device according to claim 8, wherein the device further comprises: a response module, configured to return a control response message to the sender of the control message, wherein the control response message carries the control As a result of the operation, if the sender of the control message is the upper-level MCU, the control response message further carries the location information of the multimedia to be controlled in the site where the control is located. 10. 根据权利要求 9所述的装置， 其中， 携带有所述位置信息的所述控制响应消息 通过在 H245协议定义的会场控制响应消息中增加设置为指示所述需要控制的 多媒体的位置信息的字段实现。 The device according to claim 9, wherein the control response message carrying the location information is added to the location control information message defined by the H245 protocol to be set to indicate the location information of the multimedia to be controlled. Field implementation. 11. 根据权利要求 8至 10中任一项所述的装置， 其中， 所述控制消息通过在 H245 协议定义的会场控制消息中增加设置为指示所述需要控制的多媒体的位置信息 的字段实现。 The device according to any one of claims 8 to 10, wherein the control message is implemented by adding a field set to indicate location information of the multimedia to be controlled in a site control message defined by the H245 protocol.
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Publication number Priority date Publication date Assignee Title
CN110099240B (en) * 2018-01-29 2022-01-25 视联动力信息技术股份有限公司 Control method and device for video conference

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1929593A (en) * 2005-09-07 2007-03-14 宝利通公司 Spatially correlated audio in multipoint videoconferencing
CN1976435A (en) * 2006-12-04 2007-06-06 中国联合通信有限公司 Resource allocating method in video frequency conference
US20100149309A1 (en) * 2008-12-12 2010-06-17 Tandberg Telecom As Video conferencing apparatus and method for configuring a communication session
CN101867770A (en) * 2010-05-26 2010-10-20 中兴通讯股份有限公司 Method for obtaining remote seat position information and remote presentation system

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8237765B2 (en) * 2007-06-22 2012-08-07 Lifesize Communications, Inc. Video conferencing device which performs multi-way conferencing
CN101583011B (en) * 2009-05-27 2012-04-04 华为终端有限公司 Video conference control method and system, video conference network equipment and conference places
CN102082944B (en) * 2009-11-30 2016-03-09 华为终端有限公司 A kind ofly comprise the long-range conference control method, the Apparatus and system that present meeting-place

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1929593A (en) * 2005-09-07 2007-03-14 宝利通公司 Spatially correlated audio in multipoint videoconferencing
CN1976435A (en) * 2006-12-04 2007-06-06 中国联合通信有限公司 Resource allocating method in video frequency conference
US20100149309A1 (en) * 2008-12-12 2010-06-17 Tandberg Telecom As Video conferencing apparatus and method for configuring a communication session
CN101867770A (en) * 2010-05-26 2010-10-20 中兴通讯股份有限公司 Method for obtaining remote seat position information and remote presentation system

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