WO2024066644A1 - Procédé et appareil de synchronisation d'informations dans un système de salle de classe à distance distribuée, et système - Google Patents

Procédé et appareil de synchronisation d'informations dans un système de salle de classe à distance distribuée, et système Download PDF

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Publication number
WO2024066644A1
WO2024066644A1 PCT/CN2023/105854 CN2023105854W WO2024066644A1 WO 2024066644 A1 WO2024066644 A1 WO 2024066644A1 CN 2023105854 W CN2023105854 W CN 2023105854W WO 2024066644 A1 WO2024066644 A1 WO 2024066644A1
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WIPO (PCT)
Prior art keywords
master
slave
whiteboard
whiteboard device
address information
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PCT/CN2023/105854
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English (en)
Chinese (zh)
Inventor
潘亚东
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杭州海康威视数字技术股份有限公司
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Publication of WO2024066644A1 publication Critical patent/WO2024066644A1/fr

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    • 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
    • H04L65/401—Support for services or applications wherein the services involve a main real-time session and one or more additional parallel real-time or time sensitive sessions, e.g. white board sharing or spawning of a subconference
    • H04L65/4015—Support for services or applications wherein the services involve a main real-time session and one or more additional parallel real-time or time sensitive sessions, e.g. white board sharing or spawning of a subconference where at least one of the additional parallel sessions is real time or time sensitive, e.g. white board sharing, collaboration or spawning of a subconference
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
    • G09B5/00—Electrically-operated educational appliances
    • G09B5/08—Electrically-operated educational appliances providing for individual presentation of information to a plurality of student stations
    • 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
    • H04L65/1066—Session management
    • H04L65/1069—Session establishment or de-establishment

Definitions

  • the present application relates to the field of remote classroom technology in the education industry, and in particular to an information synchronization method, device and system in a distributed remote classroom system.
  • the distributed remote classroom system may include a master video device deployed in a master classroom (the master classroom may be one) and a slave video device deployed in a slave classroom (the slave classroom may be one or more).
  • the distributed remote classroom system may also include a central server.
  • the master video device may collect the video and audio data of the master video device and send the video and audio data to the central server, and the central server sends the video and audio data of the master video device to the slave video device.
  • whiteboard devices can also be deployed in the distributed remote classroom system, that is, the main whiteboard device is deployed in the main classroom, and the slave whiteboard device is deployed in the slave classroom.
  • the screen content of the main whiteboard device needs to be shared with the slave whiteboard device.
  • the present application provides an information synchronization method, device and system in a distributed remote classroom system, which can share the screen content of a master whiteboard device with a slave whiteboard device.
  • the present application provides an information synchronization method in a distributed remote classroom system, wherein the distributed remote classroom system includes a master whiteboard device deployed in a first classroom, a slave video device and a slave whiteboard device deployed in a second classroom, and the method includes:
  • the master whiteboard device sends the address information of the master whiteboard device to the slave video device;
  • the slave whiteboard device obtains the address information of the master whiteboard device from the slave video device;
  • the slave whiteboard device After acquiring the address information of the master whiteboard device, the slave whiteboard device establishes a communication connection with the master whiteboard device based on the address information of the master whiteboard device;
  • the master whiteboard device sends the screen content of the master whiteboard device to the slave whiteboard device based on the communication connection, so that the slave whiteboard device displays the screen content of the master whiteboard device.
  • the present application provides an information synchronization method in a distributed remote classroom system, wherein the distributed remote classroom system includes a master whiteboard device deployed in a first classroom, a slave video device and a slave whiteboard device deployed in a second classroom, and the method is applied to the master whiteboard device.
  • the method includes:
  • the address information of the master whiteboard device is sent to the slave video device, and the slave video device sends the address information of the master whiteboard device to the slave whiteboard device;
  • the screen content of the master whiteboard device is sent to the slave whiteboard device based on the communication connection, so that the slave whiteboard device displays the screen content of the master whiteboard device.
  • the present application provides an information synchronization method in a distributed remote classroom system, wherein the distributed remote classroom system includes a master whiteboard device deployed in a first classroom, a slave video device and a slave whiteboard device deployed in a second classroom, and the method is applied to the slave whiteboard device.
  • the method includes:
  • the screen content of the master whiteboard device is displayed on the slave whiteboard device.
  • the present application provides an information synchronization device in a distributed remote classroom system, wherein the distributed remote classroom system includes a master whiteboard device deployed in a first classroom, a slave video device and a slave whiteboard device deployed in a second classroom, and the device is applied to the master whiteboard device, and the device includes:
  • a sending module used to send the address information of the master whiteboard device to the slave video device, and the slave video device sends the address information of the master whiteboard device to the slave whiteboard device;
  • a receiving module configured to receive a communication connection request sent by the slave whiteboard device; wherein the communication connection request is sent by the slave whiteboard device based on the address information of the master whiteboard device;
  • An establishing module used for establishing a communication connection with the slave whiteboard device based on the communication connection request
  • the sending module is further used to send the screen content of the master whiteboard device to the slave whiteboard device based on the communication connection, so that the slave whiteboard device displays the screen content of the master whiteboard device.
  • the present application provides an information synchronization device in a distributed remote classroom system, wherein the distributed remote classroom system includes a master whiteboard device deployed in a first classroom, a slave video device and a slave whiteboard device deployed in a second classroom, and the device is applied to the slave whiteboard device.
  • the device includes:
  • an acquisition module configured to acquire address information of the master whiteboard device from the slave video device
  • An establishing module used to establish a communication connection with the main whiteboard device based on the address information of the main whiteboard device
  • the acquisition module is further used to acquire the screen content of the master whiteboard device from the master whiteboard device based on the communication connection, and display the screen content of the master whiteboard device on the slave whiteboard device.
  • the present application provides a distributed remote classroom system, including a master whiteboard device deployed in a first classroom, a slave video device and a slave whiteboard device deployed in a second classroom; wherein:
  • the master whiteboard device is used to send the address information of the master whiteboard device to the slave video device;
  • the slave video device is used to send the address information of the master whiteboard device to the slave whiteboard device;
  • the slave whiteboard device is used to establish a communication connection with the master whiteboard device based on the address information of the master whiteboard device after receiving the address information of the master whiteboard device;
  • the master whiteboard device is further configured to send the screen content of the master whiteboard device to the slave whiteboard device based on the communication connection, so that the slave whiteboard device displays the screen content of the master whiteboard device.
  • the master whiteboard device can send the address information of the master whiteboard device to the slave video device, and the slave video device sends the address information to the slave whiteboard device, so that the slave whiteboard device can A communication connection is established with the master whiteboard device based on the address information.
  • the master whiteboard device can send the screen content of the master whiteboard device to the slave whiteboard device based on the communication connection, so that the slave whiteboard device displays the screen content of the master whiteboard device, thereby being able to share the screen content of the master whiteboard device with the slave whiteboard device, so that users from the classroom can clearly view the screen content of the master whiteboard device.
  • FIG1 is a schematic diagram of the structure of a distributed remote classroom system in the related art
  • FIG2 is a schematic diagram of the structure of another distributed remote classroom system in the related art.
  • FIG3 is a schematic diagram of the structure of a distributed remote classroom system according to an embodiment of the present application.
  • FIG4 is a flow chart of an information synchronization method in a distributed remote classroom system according to an embodiment of the present application.
  • FIG. 5 is a flow chart of an information synchronization method in a distributed remote classroom system according to another embodiment of the present application.
  • FIG. 6 is a flow chart of an information synchronization method in a distributed remote classroom system according to another embodiment of the present application.
  • FIG. 7 is a flow chart of an information synchronization method in a distributed remote classroom system according to another embodiment of the present application.
  • FIG. 8 is a flow chart of an information synchronization method in a distributed remote classroom system according to another embodiment of the present application.
  • 9A and 9B are schematic diagrams of the structure of an information synchronization device in a distributed remote classroom system according to an embodiment of the present application.
  • first, second, third, etc. may be used to describe various information in the embodiments of the present application, these information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other.
  • first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information.
  • word "if” used may be interpreted as "at" or "when" or "in response to determination”.
  • the distributed remote classroom system may include a main video device (such as a camera, etc., for the sake of convenience of distinction, the video device deployed in the main classroom is recorded as the main video device) deployed in a main classroom (there may be one main classroom) and a slave video device (for the sake of convenience of distinction, the video device deployed in the slave classroom is recorded as the slave video device) deployed in a slave classroom (there may be one or more slave classrooms).
  • the distributed remote classroom system may also include a central server.
  • FIG. 1 is a structural diagram of a distributed remote classroom system in the related art. Taking a main classroom and two slave classrooms as an example, the video device in the main classroom 1 is recorded as the main video device 111, the video device in the slave classroom 2 is recorded as the slave video device 121, and the video device in the slave classroom 3 is recorded as the slave video device 131.
  • the main video device 111 can collect audio and video data (such as video data and/or audio data) of the main video device 111 and send the audio and video data to the central server 14, and the central server 14 sends the audio and video data of the main video device 111 to the slave video device 121 and the slave video device 131.
  • audio and video data such as video data and/or audio data
  • whiteboard devices i.e., electronic whiteboard devices
  • the main whiteboard device is deployed in the main classroom
  • the slave whiteboard device is deployed in the slave classroom (for the convenience of distinction, the whiteboard device deployed in the slave classroom is recorded as the slave whiteboard device).
  • the whiteboard device in the main classroom 1 is recorded as the main whiteboard device 112
  • the whiteboard device in the slave classroom 2 is recorded as the slave whiteboard device 122
  • the whiteboard device in the slave classroom 3 is recorded as the slave whiteboard device 132.
  • a whiteboard sharing module can be added to the central server, and the master whiteboard device 112 can send the screen content of the master whiteboard device 112 to the whiteboard sharing module of the central server 14, and the whiteboard sharing module of the central server 14 sends the screen content of the master whiteboard device 112 to the slave whiteboard device 122 and the slave whiteboard device 132.
  • an additional whiteboard sharing module (for supporting the sharing of whiteboard content) needs to be added to the central server 14, that is, the central server 14 needs to be upgraded, which may cause the central server 14 to run unstably and fail to run normally during the upgrade of the central server 14, and fail to support the sharing of audio and video data of the main video device 111.
  • the IP address of the central server 14 needs to be configured to each whiteboard device (i.e., the master whiteboard device and the slave whiteboard device), which is a cumbersome operation. Once the IP address of the central server 14 changes, the changed IP address of the central server 14 needs to be reconfigured to each whiteboard device, increasing the deployment cost.
  • an information synchronization method in a distributed remote classroom system is proposed in an embodiment of the present application, which can add a whiteboard device to the distributed remote classroom system to achieve interaction.
  • the distributed remote classroom system may include a master video device and a master whiteboard device deployed in a first classroom (such as a main classroom, which may be one), and a slave video device and a slave whiteboard device deployed in a second classroom (such as a slave classroom, which may be one or more).
  • a master video device and a master whiteboard device deployed in a first classroom such as a main classroom, which may be one
  • a slave video device and a slave whiteboard device deployed in a second classroom such as a slave classroom, which may be one or more
  • the distributed remote classroom system may also include a central server.
  • the distributed remote classroom system is a teaching system for realizing remote classrooms.
  • Remote classrooms refer to a teaching method that shares the teacher's teaching content with students through the Internet.
  • the main classroom refers to the classroom where the teacher teaches
  • the secondary classroom refers to the classroom where remote teaching is conducted through the Internet.
  • the distributed remote classroom system can be used to share the teacher's teaching content with students.
  • excellent teachers can be placed in the main classroom, and the teacher's teaching content can be shared with students in multiple secondary classrooms through the distributed remote classroom system.
  • the video device may be a camera, etc.
  • the video device deployed in the main classroom may be recorded as the main video device
  • the video device deployed in the slave classroom may be recorded as the slave video device.
  • whiteboard equipment is also called electronic whiteboard equipment. It is a writing device used by teachers to write on the blackboard. This article refers to equipment that uses an electronic screen for writing.
  • the whiteboard equipment deployed in the main classroom can be referred to as the main whiteboard.
  • the whiteboard device deployed in the slave classroom is recorded as a slave whiteboard device.
  • the main video device of the main classroom, the main whiteboard device of the main classroom, the slave video devices of all slave classrooms, and the slave whiteboard devices of all slave classrooms can be deployed in the same local area network, so that communication connection between different video devices can be realized in the same local area network, communication connection between different whiteboard devices can be realized in the same local area network, and communication connection between whiteboard devices and video devices can be realized in the same local area network.
  • communication connection between different video devices can be realized in the same local area network
  • communication connection between different whiteboard devices can be realized in the same local area network
  • communication connection between whiteboard devices and video devices can be realized in the same local area network.
  • data can be transmitted between different video devices
  • data can be transmitted between different whiteboard devices
  • data can be transmitted between whiteboard devices and video devices.
  • FIG 3 is a structural diagram of a distributed remote classroom system according to an embodiment of the present application.
  • the video device in the main classroom 1 is recorded as the main video device 111
  • the whiteboard device in the main classroom 1 is recorded as the main whiteboard device 112
  • the video device in the slave classroom 2 is recorded as the slave video device 121
  • the whiteboard device in the slave classroom 2 is recorded as the slave whiteboard device 122
  • the video device in the slave classroom 3 is recorded as the slave video device 131
  • the whiteboard device in the slave classroom 3 is recorded as the slave whiteboard device 132.
  • the main video device 111 can collect audio and video data (such as video data and/or audio data) of the main video device 111, and send the audio and video data to the central server 14, and the central server 14 sends the audio and video data of the main video device 111 to the slave video device 121 and the slave video device 131.
  • the main whiteboard device 112 can send the address information of the main whiteboard device 112 to the slave video device 121 (slave video device 131), and the slave video device 121 sends the address information to the slave whiteboard device 122 (slave whiteboard device 132), so that the slave whiteboard device 122 can establish a communication connection with the main whiteboard device 112 based on the address information.
  • the main whiteboard device 112 can send the screen content of the main whiteboard device 112 to the slave whiteboard device 122 based on the communication connection, so that the slave whiteboard device 122 displays the screen content of the main whiteboard device 112, thereby being able to share the screen content of the main whiteboard device 112 with the slave whiteboard device 122, so that users from the classroom can clearly view the screen content of the main whiteboard device 112.
  • the distributed remote classroom system may include a main video device 111 and a main whiteboard device 112 deployed in a first classroom, and a slave video device 121 and a slave whiteboard device 122 deployed in a second classroom (for the convenience of distinction, the slave video device 121 and the slave whiteboard device 122 are taken as examples, and the implementation methods of the slave video device 131 and the slave whiteboard device 132 are similar, which will not be repeated later), as shown in Figure 4, which is a flow chart of the method.
  • the method may include the following steps 401 to 407.
  • Step 401 The master whiteboard device 112 starts a network detection service, which is used to detect the communication connection request of the slave whiteboard device 122 . That is, once the communication connection request sent by the slave whiteboard device 122 is received, the master whiteboard device 112 is triggered to establish a communication connection with the slave whiteboard device 122 .
  • the main whiteboard device 112 can start the network detection service and execute the subsequent steps to implement the information synchronization method.
  • the main whiteboard device 112 can display a sharing function start interface to the user. If the user enters a command to start the sharing function in the sharing function start interface, the main whiteboard device 112 starts the sharing function. On the contrary, if the user does not enter a command to start the sharing function in the sharing function start interface, the main whiteboard device 112 does not start the sharing function.
  • the master whiteboard device 112 may obtain address information corresponding to the network detection service (ie, service address information), and the address information corresponding to the network detection service is used as the address information of the master whiteboard device 112 , which may include but is not limited to an IP address and a port.
  • address information corresponding to the network detection service ie, service address information
  • the address information corresponding to the network detection service is used as the address information of the master whiteboard device 112 , which may include but is not limited to an IP address and a port.
  • the network detection service may include but is not limited to a socket network detection service.
  • the IP address corresponding to the socket network detection service is the IP address of the main whiteboard device 112.
  • the port corresponding to the socket network detection service may be a socket port, such as port 8080, etc., without limitation.
  • the master whiteboard device 112 can obtain the address information of the master whiteboard device 112 , and the address information may include an IP address and a port.
  • Step 402 The master whiteboard device 112 sends the address information of the master whiteboard device 112 to the master video device 111. After receiving the address information of the master whiteboard device 112, the master video device 111 may return a successful response to the master whiteboard device 112 or may not return a successful response to the master whiteboard device 112.
  • a video device list may be pre-configured on the main whiteboard device 112 , and the video device list may include address information of the main video device 111 , such as the IP address and port of the main video device 111 .
  • the master whiteboard device 112 can also query the address information of the master video device 111 from the video device list. Then, the master whiteboard device 112 establishes a communication connection with the master video device 111 based on the address information of the master video device 111, and sends the address information of the master whiteboard device 112 to the master video device 111 through the communication connection.
  • the main whiteboard device 112 and the main video device 111 can establish a communication connection.
  • the communication connection can be a Transmission Control Protocol (TCP) communication connection or other types of communication connections.
  • TCP Transmission Control Protocol
  • the TCP communication connection is taken as an example below, and there is no restriction on the process of establishing this TCP communication connection.
  • the master whiteboard device 112 After the master whiteboard device 112 establishes a TCP communication connection with the master video device 111, the master whiteboard device 112 can send the address information of the master whiteboard device 112 to the master video device 111 through the TCP communication connection, and the master video device 111 stores the address information of the master whiteboard device 112.
  • the master video device 111 can maintain an information table in advance, and after receiving the address information of the master whiteboard device 112, the master video device 111 can store the address information of the master whiteboard device 112 in the information table.
  • Step 403 The master whiteboard device 112 sends the address information of the master whiteboard device 112 to the slave video device 121. After receiving the address information of the master whiteboard device 112, the slave video device 121 may return a successful response to the master whiteboard device 112 or may not return a successful response to the master whiteboard device 112.
  • a video device list may be pre-configured on the master whiteboard device 112 , and the video device list may include address information of the slave video device 121 , such as an IP address and port number of the slave video device 121 .
  • the master whiteboard device 112 can also query the address information of the slave video device 121 from the video device list. Then, the master whiteboard device 112 establishes a communication connection with the slave video device 121 based on the address information of the slave video device 121, and sends the address information of the master whiteboard device 112 to the slave video device 121 through the communication connection.
  • the master whiteboard device 112 based on the address information (IP address and port) of the slave video device 121, the master whiteboard device 112 establishes a communication connection with the slave video device 121, and the communication connection may be a TCP communication connection or other types of communication connections, and the TCP communication connection is used as an example in the following.
  • the master whiteboard device 112 may send the address information of the master whiteboard device 112 to the slave video device 121 via the TCP communication connection, and the slave video device 121 stores the address information of the master whiteboard device 112.
  • the slave video device 121 may maintain an information table in advance, and the slave video device 121 stores the address information of the master whiteboard device 112 in the information table.
  • the video device list of the master whiteboard device 112 may include the address information of each video device (such as the master video device 111 and each slave video device). Based on the address information of each video device, the master whiteboard device 112 may establish a TCP communication connection with each video device. Then, the address information of the main whiteboard device 112 is sent to each video device through the TCP communication connection, and each video device can receive the address information of the main whiteboard device 112 .
  • step 402 may be an optional step, that is, step 402 may not be executed and only step 403 may be executed. Therefore, the video device list of the master whiteboard device 112 may only include the address information of each slave video device. Based on the address information of each slave video device, the master whiteboard device 112 may establish a TCP communication connection with each slave video device, and then send the address information of the master whiteboard device 112 to each slave video device through the TCP communication connection without sending it to the master video device.
  • Step 404 The slave whiteboard device 122 sends an address information request message to the slave video device 121 .
  • the address information request message may be used to request the address information of the master whiteboard device 112 .
  • Step 405 After receiving the address information request message sent by the slave whiteboard device 122 , the slave video device 121 sends the address information of the master whiteboard device 112 to the slave whiteboard device 122 .
  • a video device list may be pre-configured in the slave whiteboard device 122 , and the video device list may include address information of the slave video device 121 , such as an IP address and port number of the slave video device 121 .
  • the slave whiteboard device 122 can query the address information of the slave video device 121 from the video device list, establish a communication connection with the slave video device 121 based on the address information of the slave video device 121, and send an address information request message to the slave video device 121 through the communication connection. After receiving the address information request message, the video device 121 sends the address information of the master whiteboard device 112 to the slave whiteboard device 122 through the communication connection.
  • the slave whiteboard device 122 based on the address information (IP address and port) of the slave video device 121, the slave whiteboard device 122 establishes a communication connection with the slave video device 121.
  • the communication connection may be a TCP communication connection or other types of communication connections.
  • the TCP communication connection is taken as an example below.
  • the slave whiteboard device 122 may send an address information request message to the slave video device 121 via the TCP communication connection.
  • the slave video device 121 may read the address information of the master whiteboard device 112 from the information table of the slave video device 121, and send the address information of the master whiteboard device 112 to the slave whiteboard device 122 via the TCP communication connection.
  • the slave whiteboard device 122 can obtain the address information of the master whiteboard device 112 .
  • Step 406 The slave whiteboard device 122 establishes a communication connection with the master whiteboard device 112 based on the address information of the master whiteboard device 112 , that is, a communication connection is established between the slave whiteboard device 122 and the master whiteboard device 112 .
  • the slave whiteboard device 122 may send a communication connection request to the master whiteboard device 112, and the communication connection request is used to trigger the establishment of a communication connection between the slave whiteboard device 122 and the master whiteboard device 112.
  • the master whiteboard device 112 may establish a communication connection with the slave whiteboard device 122 based on the communication connection request.
  • the master whiteboard device 112 since the master whiteboard device 112 has started the network detection service, which is used to detect the communication connection request of the slave whiteboard device 122, after receiving the communication connection request, the master whiteboard device 112 triggers the establishment of a communication connection with the slave whiteboard device 122 based on the communication connection request.
  • a communication connection can be established between the slave whiteboard device 122 and the main whiteboard device 112.
  • the communication connection can be a TCP communication connection or other types of communication connections.
  • the TCP communication connection is taken as an example below, and there is no restriction on the process of establishing the TCP communication connection, as long as the TCP communication connection can be established.
  • Step 407 The master whiteboard device 112 sends the screen content of the master whiteboard device 112 to the slave whiteboard device 122 based on the communication connection (i.e., the communication connection between the master whiteboard device 112 and the slave whiteboard device 122), so that the slave whiteboard device 122 can receive the screen content of the master whiteboard device 112.
  • the slave whiteboard device 122 displays the screen content of the master whiteboard device 112 , that is, the screen content of the master whiteboard device 112 is displayed on the slave whiteboard device 122 , so that the user can view the screen content in the slave classroom.
  • the slave whiteboard device 122 may return a success response to the master whiteboard device 112 , or may not return a success response to the master whiteboard device 112 .
  • the master whiteboard device 112 can collect the screen content displayed on the master whiteboard device 112 in real time, and send the screen content of the master whiteboard device 112 to the slave whiteboard device 122 through the TCP communication connection.
  • the slave whiteboard device 122 can display the screen content of the master whiteboard device 112 on the slave whiteboard device 122, so that the user can view the screen content of the master whiteboard device 112 in the slave classroom, so that the screen content of the master whiteboard device 112 can be displayed in real time in the slave classroom.
  • the operation information of the slave whiteboard device 122 can also be synchronized to the master whiteboard device 112 through the TCP communication connection, and there is no restriction on the synchronization process of this operation information.
  • the premise of the above whiteboard data sharing function is that the video data sharing function has been turned on, that is, the master video device 111 can collect the video and audio data (such as video data and/or audio data) of the master video device 111 in real time, and send the video and audio data of the master video device 111 to the central server 14, and the central server 14 sends the video and audio data of the master video device 111 to the slave video device 121, so that the slave video device 121 processes the video and audio data of the master video device 111, such as playing the video and audio data of the master video device 111, displaying the video and audio data of the master video device 111, etc.
  • the whiteboard data sharing function can also be implemented by using steps 401 to 407.
  • the distributed remote classroom system may include a main video device 111 and a main whiteboard device 112 deployed in a first classroom, and a slave video device 121 and a slave whiteboard device 122 deployed in a second classroom.
  • the method includes the following steps 501 to 507.
  • Step 501 The master whiteboard device 112 starts a network detection service, which is used to detect the communication connection request of the slave whiteboard device 122 . That is, once the communication connection request sent by the slave whiteboard device 122 is received, the master whiteboard device 112 is triggered to establish a communication connection with the slave whiteboard device 122 .
  • the master whiteboard device 112 may obtain address information corresponding to the network detection service, that is, address information of the master whiteboard device 112 .
  • step 501 can refer to step 401, which will not be repeated here.
  • Step 502 The master whiteboard device 112 sends the address information of the master whiteboard device 112 to the master video device 111. After receiving the address information of the master whiteboard device 112, the master video device 111 may return a successful response to the master whiteboard device 112 or may not return a successful response to the master whiteboard device 112.
  • a video device list may be pre-configured in the main whiteboard device 112, and the video device list may include address information of the main video device 111, such as the IP address and port of the main video device 111.
  • the main whiteboard device 112 may query the address information of the main video device 111 from the video device list, establish a communication connection with the main video device 111 based on the address information of the main video device 111, and send the address information of the main whiteboard device 112 to the main video device 111 through the communication connection.
  • step 502 may refer to step 402 and will not be described in detail here.
  • the video device list needs to include the address information of each slave video device, while in step 502, the video device list may include the address information of each slave video device, or may not include the address information of each slave video device.
  • the master video device 111 sends the address information of the master whiteboard device 112 to the slave video device 121 based on the video sharing channel.
  • the video sharing channel may be a channel for transmitting audio and video data between the master video device 111 and the slave video device 121. That is, on the basis of transmitting audio and video data between the master video device 111 and the slave video device 121 through the video sharing channel, the master video device 111 may send the address information of the master whiteboard device 112 to the slave video device 121 based on the video sharing channel.
  • the slave video device 121 may or may not return a successful response to the master video device 111 .
  • the master video device 111 can read the address information of the master whiteboard device 112 from the information table, and send the address information of the master whiteboard device 112 to the slave video device 121. For example, based on the video sharing channel between the master video device 111 and the slave video device 121 (the video sharing channel crosses the central server 14), the master video device 111 can send the address information of the master whiteboard device 112 to the central server 14, and the central server 14 sends the address information of the master whiteboard device 112 to the slave video device 121.
  • the master video device 111 can also directly send the address information of the master whiteboard device 112 to the slave video device 121.
  • the slave video device 121 may store the address information of the master whiteboard device 112. For example, the slave video device 121 may maintain an information table in advance, and the slave video device 121 stores the address information of the master whiteboard device 112 in the information table.
  • Step 504 The slave whiteboard device 122 sends an address information request message to the slave video device 121 .
  • the address information request message may be used to request the address information of the master whiteboard device 112 .
  • step 504 may refer to step 404, which will not be described in detail here.
  • Step 505 After receiving the address information request message sent by the slave whiteboard device 122 , the slave video device 121 sends the address information of the master whiteboard device 112 to the slave whiteboard device 122 .
  • step 505 can refer to step 405, which will not be described in detail here.
  • Step 506 The slave whiteboard device 122 establishes a communication connection with the master whiteboard device 112 based on the address information of the master whiteboard device 112 , that is, a communication connection is established between the slave whiteboard device 122 and the master whiteboard device 112 .
  • step 506 may refer to step 406, which will not be described in detail here.
  • Step 507 The master whiteboard device 112 sends the screen content of the master whiteboard device 112 to the slave whiteboard device 122 based on the communication connection, so that the slave whiteboard device 122 displays the screen content of the master whiteboard device 112 .
  • the slave whiteboard device 122 may return a success response to the master whiteboard device 112 , or may not return a success response to the master whiteboard device 112 .
  • step 507 may refer to step 407, which will not be described in detail here.
  • the main whiteboard device sends the address information of the main whiteboard device to the slave video device, and the slave video device sends the address information to the slave whiteboard device, so that the slave whiteboard device establishes a communication connection with the main whiteboard device based on the address information.
  • the main whiteboard device can send the screen content of the main whiteboard device to the slave whiteboard device based on the communication connection, so that the slave whiteboard device displays the screen content of the main whiteboard device, thereby sharing the screen content of the main whiteboard device with the slave whiteboard device, so that the users of the slave classroom can clearly view the screen content of the main whiteboard device.
  • the system interface is used to realize the sharing of the address information of the main whiteboard device, and the main whiteboard device is used as a temporary server to realize sharing.
  • the scenario requires that the number of slave classrooms is 2-4, and the performance of the main whiteboard device is sufficient for use.
  • the decentralized design will not introduce new costs.
  • the coupling degree with the existing video sharing system is low, and there is no need to change the existing central server.
  • a distributed remote classroom system is proposed in the embodiment of the present application.
  • the invention discloses an information synchronization method in a distributed remote classroom system, wherein the distributed remote classroom system may include a master video device and a master whiteboard device deployed in a first classroom, and a slave video device and a slave whiteboard device deployed in a second classroom.
  • FIG. 6 is a schematic flow chart of the method, and the method may include the following steps 601 to 604 .
  • Step 601 The master whiteboard device sends address information of the master whiteboard device to the slave video device.
  • the master whiteboard device can query the address information of the master video device from the configured video device list, and establish a communication connection with the master video device based on the address information of the master video device.
  • the master whiteboard device sends the address information of the master whiteboard device to the master video device through the communication connection, and the master video device sends the address information of the master whiteboard device to the slave video device based on the video sharing channel.
  • the video sharing channel is a channel for transmitting video and audio data between the master video device and the slave video device.
  • the master whiteboard device may query the address information of the slave video device from the configured video device list, establish a communication connection with the slave video device based on the address information of the slave video device, and send the address information of the master whiteboard device to the slave video device through the communication connection.
  • Step 602 The slave whiteboard device obtains the address information of the master whiteboard device from the slave video device.
  • the slave whiteboard device can query the address information of the slave video device from the configured video device list, establish a communication connection with the slave video device based on the address information of the slave video device, and send an address information request message to the slave video device through the communication connection. After receiving the address information request message, the slave video device sends the address information of the master whiteboard device to the slave whiteboard device through the communication connection.
  • Step 603 After the slave whiteboard device obtains the address information of the master whiteboard device, the slave whiteboard device establishes a communication connection with the master whiteboard device based on the address information of the master whiteboard device.
  • the master whiteboard device sends the address information of the master whiteboard device to the slave video device, which may include: after starting the network detection service, the master whiteboard device obtains the address information of the master whiteboard device corresponding to the network detection service, and sends the address information to the slave video device.
  • a slave whiteboard device establishes a communication connection with a master whiteboard device based on the address information of the master whiteboard device, which may include but is not limited to: the slave whiteboard device sends a communication connection request to the master whiteboard device based on the address information of the master whiteboard device; after detecting the communication connection request, the network detection service of the master whiteboard device triggers the establishment of a communication connection with the slave whiteboard device based on the communication connection request; wherein the network detection service is used to detect the communication connection request of the slave whiteboard device.
  • Step 604 The master whiteboard device sends the screen content of the master whiteboard device to the slave whiteboard device based on the communication connection, so that the slave whiteboard device displays the screen content of the master whiteboard device.
  • the distributed remote classroom system also includes a central server, and the master video device sends the audio and video data of the master video device to the central server; the central server sends the audio and video data of the master video device to the slave video device, so that the slave video device processes the audio and video data of the master video device.
  • the main whiteboard device can send the address information of the main whiteboard device to the slave video device, and the slave video device sends the address information to the slave whiteboard device, so that the slave whiteboard device can establish a communication connection with the main whiteboard device based on the address information.
  • the main whiteboard device can send the screen content of the main whiteboard device to the slave whiteboard device based on the communication connection, so that the slave whiteboard device displays the screen content of the main whiteboard device, thereby being able to share the screen content of the main whiteboard device with the slave whiteboard device, so that users from the classroom can clearly view the screen content of the main whiteboard device.
  • the present application embodiment proposes an information synchronization method in a distributed remote classroom system, wherein the distributed remote classroom system includes a main video device and a main whiteboard deployed in a first classroom. Device, a slave video device and a slave whiteboard device deployed in the second classroom.
  • FIG. 7 is a flow chart of the method, which is applied to the master whiteboard device. The method may include the following steps 701 to 704 .
  • Step 701 Send address information of the master whiteboard device to the slave video device, and the slave video device sends address information of the master whiteboard device to the slave whiteboard device.
  • the address information of the main video device can be queried from the list of configured video devices, a communication connection can be established with the main video device based on the address information of the main video device, and the address information of the main whiteboard device can be sent to the main video device through the communication connection, and the main video device can send the address information of the main whiteboard device to the slave video device based on the video sharing channel;
  • the video sharing channel is a channel for transmitting audio and video data between the main video device and the slave video device; or, the address information of the slave video device can be queried from the list of configured video devices, a communication connection can be established with the slave video device based on the address information of the slave video device, and the address information of the main whiteboard device can be sent to the slave video device through the communication connection.
  • Step 702 Receive a communication connection request sent from a whiteboard device; wherein the communication connection request is sent from the whiteboard device based on the address information of the master whiteboard device.
  • Step 703 Establish a communication connection with the slave whiteboard device based on the communication connection request.
  • Step 704 Send the screen content of the master whiteboard device to the slave whiteboard device based on the communication connection, so that the slave whiteboard device displays the screen content of the master whiteboard device.
  • the embodiment of the present application proposes an information synchronization method in a distributed remote classroom system
  • the distributed remote classroom system includes a master video device and a master whiteboard device deployed in a first classroom, and a slave video device and a slave whiteboard device deployed in a second classroom.
  • FIG8 is a flow chart of the method, the method is applied to a slave whiteboard device, and the method may include the following steps 801 to 804.
  • Step 801 Acquire address information of a master whiteboard device from a slave video device.
  • the address information of the slave video device can be queried from the list of configured video devices; based on the address information of the slave video device, a communication connection is established with the slave video device, and an address information request message is sent to the slave video device through the communication connection; based on the communication connection, the address information of the master whiteboard device is received from the slave video device, thereby obtaining the address information of the master whiteboard device.
  • Step 802 Establish a communication connection with the master whiteboard device based on the address information of the master whiteboard device.
  • Step 803 Acquire the screen content of the main whiteboard device from the main whiteboard device based on the communication connection.
  • Step 804 Display the screen content of the master whiteboard device on the slave whiteboard device.
  • the distributed remote classroom system includes a master video device and a master whiteboard device deployed in a first classroom, and a slave video device and a slave whiteboard device deployed in a second classroom. See FIG. 9A , which is a schematic diagram of the structure of the device.
  • the device is applied to the master whiteboard device, and the device may include:
  • a sending module 911 configured to send the address information of the master whiteboard device to the slave video device, and the slave video device sends the address information of the master whiteboard device to the slave whiteboard device;
  • a receiving module 912 configured to receive a communication connection request sent by the slave whiteboard device; wherein the communication connection request is sent by the slave whiteboard device based on the address information of the master whiteboard device;
  • An establishing module 913 configured to establish a communication connection with the slave whiteboard device based on the communication connection request
  • the sending module 911 is further configured to send the screen content of the master whiteboard device to the slave whiteboard device based on the communication connection, so that the slave whiteboard device displays the screen content of the master whiteboard device.
  • the sending module 911 sends the address information of the master whiteboard device to the slave video
  • the device is specifically used for: querying the address information of the master video device from the configured video device list, and establishing a communication connection with the master video device based on the address information of the master video device; sending the address information of the master whiteboard device to the master video device through the communication connection, and the master video device sends the address information of the master whiteboard device to the slave video device based on the video sharing channel;
  • the video sharing channel is a channel for transmitting audio and video data between the master video device and the slave video device; or,
  • the address information of the slave video device is queried from the configured video device list, and a communication connection is established with the slave video device based on the address information of the slave video device; and the address information of the master whiteboard device is sent to the slave video device through the communication connection.
  • the distributed remote classroom system includes a master video device and a master whiteboard device deployed in a first classroom, and a slave video device and a slave whiteboard device deployed in a second classroom. See FIG. 9B , which is a structural schematic diagram of the device.
  • the device is applied to a slave whiteboard device, and the device may include:
  • An acquisition module 921 is used to acquire the address information of the master whiteboard device from the slave video device.
  • Establishing module 922 used to establish a communication connection with the main whiteboard device based on the address information of the main whiteboard device;
  • the acquisition module 921 is further configured to acquire the screen content of the master whiteboard device from the master whiteboard device based on the communication connection, and display the screen content of the master whiteboard device on the slave whiteboard device.
  • the acquisition module 921 acquires the address information of the master whiteboard device from the slave video device, it is specifically used to: query the address information of the slave video device from a list of configured video devices; establish a communication connection with the slave video device based on the address information of the slave video device; send an address information request message to the slave video device through the communication connection; and receive the address information of the master whiteboard device from the slave video device based on the communication connection.
  • a distributed remote classroom system is proposed in the embodiment of the present application, wherein the distributed remote classroom system includes a master video device and a master whiteboard device deployed in a first classroom, and a slave video device and a slave whiteboard device deployed in a second classroom; wherein:
  • the master whiteboard device is used to send the address information of the master whiteboard device to the slave video device;
  • the slave video device is used to send the address information of the master whiteboard device to the slave whiteboard device;
  • the slave whiteboard device is used to establish a communication connection with the master whiteboard device based on the address information of the master whiteboard device after receiving the address information of the master whiteboard device;
  • the master whiteboard device is further configured to send the screen content of the master whiteboard device to the slave whiteboard device based on the communication connection, so that the slave whiteboard device displays the screen content of the master whiteboard device.
  • the master whiteboard device when it sends the address information of the master whiteboard device to the slave video device, it is specifically used to: query the address information of the master video device from the list of configured video devices, and establish a communication connection with the master video device based on the address information of the master video device; send the address information of the master whiteboard device to the master video device through the communication connection, and the master video device sends the address information of the master whiteboard device to the slave video device based on a video sharing channel; the video sharing channel is a channel for transmitting audio and video data between the master video device and the slave video device; or, query the address information of the slave video device from the list of configured video devices, and establish a communication connection with the slave video device based on the address information of the slave video device; send the address information of the master whiteboard device to the slave video device through the communication connection.
  • the video sharing channel is a channel for transmitting audio and video data between the master video device and the slave video device
  • the distributed remote classroom system includes a central server, the master video device is further used to send the video and audio data of the master video device to the central server; the central server is further used to send the video and audio data of the master video device to the slave video device, so that the slave video device can Process the video and audio data of the video device.
  • a master whiteboard device is proposed in an embodiment of the present application, wherein the master whiteboard device includes a processor and a machine-readable storage medium, wherein the machine-readable storage medium stores machine-executable instructions that can be executed by the processor; the processor is used to execute the machine-executable instructions to implement the information synchronization method in the distributed remote classroom system disclosed in the above example of the present application.
  • a slave whiteboard device is proposed in an embodiment of the present application, wherein the slave whiteboard device includes a processor and a machine-readable storage medium, wherein the machine-readable storage medium stores machine-executable instructions that can be executed by the processor; the processor is used to execute the machine-executable instructions to implement the information synchronization method in the distributed remote classroom system disclosed in the above example of the present application.
  • an embodiment of the present application provides a machine-readable storage medium, on which a number of computer instructions are stored.
  • the computer instructions are executed by a processor, the information synchronization method in the distributed remote classroom system disclosed in the above example of the present application can be implemented.
  • the above-mentioned machine-readable storage medium can be any electronic, magnetic, optical or other physical storage device that can contain or store information, such as executable instructions, data, etc.
  • the machine-readable storage medium can be: RAM (Radom Access Memory), volatile memory, non-volatile memory, flash memory, storage drive (such as hard disk drive), solid state drive, any type of storage disk (such as CD, DVD, etc.), or similar storage medium, or a combination thereof.
  • an embodiment of the present application provides a computer program, which is stored in a machine-readable storage medium.
  • a processor executes the computer program, it prompts the processor to implement the information synchronization method in the distributed remote classroom system disclosed in the above example.
  • a typical implementation device is a computer, which may be in the form of a personal computer, a laptop computer, a cellular phone, a camera phone, a smart phone, a personal digital assistant, a media player, a navigation device, an email transceiver, a game console, a tablet computer, a wearable device or a combination of any of these devices.
  • the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the embodiments of the present application may adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) that contain computer-usable program code.
  • computer-usable storage media including but not limited to disk storage, CD-ROM, optical storage, etc.
  • each flow process and/or box in the flow chart and/or block diagram and the combination of the flow process and/or box in the flow chart and/or block diagram can be realized by computer program instructions.
  • These computer program instructions can be provided to the processor of a general-purpose computer, a special-purpose computer, an embedded processing machine or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device produce a device for realizing the function specified in one flow chart or multiple flows and/or one box or multiple boxes of the block chart.
  • these computer program instructions may also be stored in a computer-readable memory that can guide a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer-readable memory produce a product including an instruction device, and the instruction device is implemented in one or more processes and/or blocks in the flowchart. The function specified in one or more boxes.
  • These computer program instructions may also be loaded onto a computer or other programmable data processing device so that a series of operational steps are executed on the computer or other programmable device to produce a computer-implemented process, whereby the instructions executed on the computer or other programmable device provide steps for implementing the functions specified in one or more processes in the flowchart and/or one or more boxes in the block diagram.

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Abstract

La présente demande concerne un procédé et un appareil de synchronisation d'informations dans un système de salle de classe à distance distribuée et le système. Le procédé comprend les étapes suivantes : un dispositif de tableau blanc maître envoie des informations d'adresse de celui-ci à un dispositif vidéo esclave ; un dispositif de tableau blanc esclave obtient les informations d'adresse du dispositif de tableau blanc maître à partir du dispositif vidéo esclave ; après réception des informations d'adresse du dispositif de tableau blanc maître, le dispositif de tableau blanc esclave établit une connexion de communication avec le dispositif de tableau blanc maître sur la base des informations d'adresse du dispositif de tableau blanc maître ; et le dispositif de tableau blanc maître envoie un contenu d'image du dispositif de tableau blanc maître au dispositif de tableau blanc esclave sur la base de la connexion de communication, de telle sorte que le dispositif de tableau blanc esclave affiche le contenu d'image du dispositif de tableau blanc maître.
PCT/CN2023/105854 2022-09-27 2023-07-05 Procédé et appareil de synchronisation d'informations dans un système de salle de classe à distance distribuée, et système WO2024066644A1 (fr)

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CN109085950A (zh) * 2018-07-30 2018-12-25 江苏特思达电子科技股份有限公司 基于电子白板的多屏互动方法、装置及电子白板
CN115580599A (zh) * 2022-09-27 2023-01-06 杭州海康威视数字技术股份有限公司 分布式远程课堂系统中的信息同步方法、装置及系统

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CN109085950A (zh) * 2018-07-30 2018-12-25 江苏特思达电子科技股份有限公司 基于电子白板的多屏互动方法、装置及电子白板
CN115580599A (zh) * 2022-09-27 2023-01-06 杭州海康威视数字技术股份有限公司 分布式远程课堂系统中的信息同步方法、装置及系统

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