CN106648670B - Same-screen common control system and method for cloud classrooms - Google Patents
Same-screen common control system and method for cloud classrooms Download PDFInfo
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- CN106648670B CN106648670B CN201611226088.4A CN201611226088A CN106648670B CN 106648670 B CN106648670 B CN 106648670B CN 201611226088 A CN201611226088 A CN 201611226088A CN 106648670 B CN106648670 B CN 106648670B
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/14—Digital output to display device ; Cooperation and interconnection of the display device with other functional units
- G06F3/1454—Digital output to display device ; Cooperation and interconnection of the display device with other functional units involving copying of the display data of a local workstation or window to a remote workstation or window so that an actual copy of the data is displayed simultaneously on two or more displays, e.g. teledisplay
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/44—Arrangements for executing specific programs
- G06F9/451—Execution arrangements for user interfaces
- G06F9/452—Remote windowing, e.g. X-Window System, desktop virtualisation
Abstract
The invention relates to a cloud classroom common-screen common-control system and a method, wherein cloud desktop display equipment is used for generating a remote session ID after receiving a first access instruction, and sending the first cloud desktop access instruction and the remote session ID according to the first access instruction; the virtual machine server is used for receiving a first cloud desktop access instruction and a remote session ID, sending the cloud desktop according to the first cloud desktop access instruction, sending the remote session ID to the auxiliary desktop display equipment after receiving a second cloud desktop access instruction, and sending the auxiliary desktop through a communication channel after receiving the auxiliary desktop access instruction; the auxiliary desktop display device is used for receiving the second access instruction, sending the second cloud desktop access instruction according to the second access instruction, establishing a communication channel with the virtual machine server according to the received remote session ID, and sending the auxiliary desktop access instruction to the virtual machine server. The same-screen common control of the cloud classroom is realized by starting the remote assistance service, extra memory occupation is not increased, and the working stability is effectively improved.
Description
Technical Field
The invention relates to a computer data sharing technology, in particular to a same-screen shared control system and method for a cloud classroom.
Background
The cloud classroom is a multimedia classroom supported by a cloud environment, a cloud host and a cloud terminal are used for providing a cloud desktop, and the upgrading and the renovation of the multimedia classroom in the traditional PC mode are the technological development trend. Each manufacturer has a different name, such as: cloud class, CloudClass, and the like. In a multimedia classroom, one main function of teaching management is co-control on the same screen, and a teacher remotely and jointly operates a student computer system with students for academic guidance.
The traditional method for realizing common control on the same screen mainly adopts a streaming media server or VNC server mode, in the process of common control on the same screen, a student computer starts a streaming media server or a VNC server, a teacher computer starts a streaming media client or a VNC access client, and the traditional method for realizing common control on the same screen consumes CPU and memory resources and is low in working stability no matter in a traditional PC mode or a cloud computing mode.
Disclosure of Invention
In view of the above, there is a need to provide a cloud classroom co-screen control system and method with high working stability.
A cloud classroom common-screen common control system comprises a cloud desktop display device, a virtual machine server and an auxiliary desktop display device,
the cloud desktop display equipment is used for generating a remote session ID after receiving a first access instruction, and sending the first cloud desktop access instruction and the remote session ID to the virtual machine server according to the first access instruction;
the virtual machine server is used for receiving the first cloud desktop access instruction and the remote session ID, and sending a cloud desktop to the cloud desktop display device for display according to the first cloud desktop access instruction; after receiving a second cloud desktop access instruction sent by the auxiliary desktop display device, sending the remote session ID to the auxiliary desktop display device; after receiving an auxiliary desktop access instruction sent by the auxiliary desktop display equipment, sending an auxiliary desktop to the auxiliary desktop display equipment through a communication channel for display;
the auxiliary desktop display equipment is used for receiving a second access instruction and sending the second cloud desktop access instruction to the virtual machine server according to the second access instruction; and establishing the communication channel with the virtual machine server according to the received remote session ID, and sending the auxiliary desktop access instruction to the virtual machine server.
A cloud classroom common screen common control method comprises the following steps:
the cloud desktop display equipment generates a remote session ID after receiving a first access instruction, and sends the first cloud desktop access instruction and the remote session ID to the virtual machine server according to the first access instruction;
the virtual machine server receives the first cloud desktop access instruction and the remote session ID, and sends a cloud desktop to the cloud desktop display device to display according to the first cloud desktop access instruction;
the auxiliary desktop display equipment receives a second access instruction and sends the second cloud desktop access instruction to the virtual machine server according to the second access instruction;
after receiving the second cloud desktop access instruction, the virtual machine server sends the remote session ID to the auxiliary desktop display device;
the auxiliary desktop display equipment establishes a communication channel with the virtual machine server according to the received remote session ID and sends an auxiliary desktop access instruction to the virtual machine server;
and after receiving the auxiliary desktop access instruction, the virtual machine server sends an auxiliary desktop to the auxiliary desktop display equipment for display through the communication channel.
The cloud classroom same-screen co-control system and the method comprise a cloud desktop display device, a virtual machine server and an auxiliary desktop display device, wherein the cloud desktop display device is used for receiving a first access instruction and then generating a remote session ID, sending the first cloud desktop access instruction and the remote session ID to the virtual machine server according to the first access instruction, the virtual machine server is used for receiving the first cloud desktop access instruction and the remote session ID, sending a cloud desktop to the cloud desktop display device for display according to the first cloud desktop access instruction, sending the remote session ID to the auxiliary desktop display device after receiving a second cloud desktop access instruction sent by the auxiliary desktop display device, sending an auxiliary desktop to the auxiliary desktop display device for display through a communication channel after receiving the auxiliary desktop access instruction sent by the auxiliary desktop display device, and the auxiliary desktop display device is used for receiving the second access instruction, and sending a second cloud desktop access instruction to the virtual machine server according to the second access instruction, establishing a communication channel with the virtual machine server according to the received remote session ID, and sending an auxiliary desktop access instruction to the virtual machine server. The same-screen common control of the cloud classrooms is realized by establishing the communication channel, the system belongs to system kernel service, extra memory occupation is not increased, and the working stability is effectively improved.
Drawings
FIG. 1 is a diagram of a common control system for a cloud classroom;
fig. 2 is a flowchart of a co-control method for a same screen in a cloud classroom in an embodiment.
Detailed Description
In one embodiment, as shown in fig. 1, a cloud classroom common-screen co-control system includes a cloud desktop display device 110, a virtual machine server 120, and an auxiliary desktop display device 130, where the cloud desktop display device 110 is configured to generate a remote session ID after receiving a first access instruction, and send the first cloud desktop access instruction and the remote session ID to the virtual machine server 120 according to the first access instruction; the virtual machine server 120 is configured to receive the first cloud desktop access instruction and the remote session ID, and send the cloud desktop to the cloud desktop display device 110 for display according to the first cloud desktop access instruction; after receiving the second cloud desktop access instruction, sending the remote session ID to the auxiliary desktop display device 130; after receiving the auxiliary desktop access instruction, sending the auxiliary desktop to the auxiliary desktop display device 130 through the communication channel for display; the auxiliary desktop display device 130 is configured to receive a second access instruction, and send the second cloud desktop access instruction to the virtual machine server 120 according to the second access instruction; and establishing a communication channel with the virtual machine server 120 according to the received remote session ID, and sending an auxiliary desktop access instruction to the virtual machine server 120.
Specifically, before the cloud desktop display device 110 is configured to generate a remote session ID after receiving the first access instruction, and send the first cloud desktop access instruction and the remote session ID to the virtual machine server 120 according to the first access instruction, the method further includes: the virtual machine server 120 receives the starting instruction, performs remote setting according to the starting instruction, and starts remote desktop service and remote assistance; the virtual machine server 120 receives the first setting instruction, and sets the group policy of the virtual machine server 120 according to the first setting instruction; the auxiliary desktop display device 130 receives the second setting instruction, and sets the access credential of the cloud desktop display device 110 according to the second setting instruction.
The auxiliary desktop display device 130 receives the second setting instruction, and setting the access credential of the cloud desktop display device 110 according to the second setting instruction includes: the auxiliary desktop display device 130 receives the second setting instruction, accesses the management credential of the cloud desktop display device 110 according to the second setting instruction, and adds a Windows credential, an IP address of the virtual machine server 120, a user name, and a password to the management credential.
After receiving the auxiliary desktop access instruction, the virtual machine server sends the auxiliary desktop to the auxiliary desktop display device 130 through the communication channel for display, including: after receiving the auxiliary desktop access instruction, the virtual machine server 120 establishes the docking between the remote assistance and the remote desktop protocol, copies a cloud desktop image generated by the remote desktop protocol as an auxiliary desktop, and sends the auxiliary desktop to the auxiliary desktop display device 130 for display.
In one embodiment, the cloud desktop display device 110 and the auxiliary desktop display device 130 include desktop and/or notebook computers connected to the virtual machine server 120.
Specifically, the specific types of the cloud desktop display device 110 and the auxiliary desktop display device 130 are not exclusive, and in the embodiment, the specific types may be a desktop computer and/or a notebook computer.
In one embodiment, the first access instruction includes an IP address of the virtual machine server, a username, and a password.
Specifically, the specific content of the first access instruction is not limited, and can be set according to the actual application requirements, so that the flexibility is improved.
In an embodiment, the cloud desktop display device 110 is further configured to obtain an updated cloud desktop according to the received cloud desktop operation instruction, and send the updated cloud desktop to the auxiliary desktop display device 130 through the virtual machine server 120 for display, and/or the auxiliary desktop display device 130 is further configured to obtain an updated auxiliary desktop according to the received auxiliary desktop operation instruction, and send the updated auxiliary desktop to the cloud desktop display device 110 through the virtual machine server 120 for display.
Specifically, for example, a user on the side of the auxiliary desktop display device 130 circles a PPT or any other file in a display screen of the auxiliary desktop display device 130, or inputs text or performs any other operation to obtain an updated auxiliary desktop, and the cloud desktop display device 110 receives the updated auxiliary desktop through the virtual machine server 120; or the user on the cloud desktop display device 110 side answers or performs any other operation to obtain an updated cloud desktop, and the auxiliary desktop display device 130 receives the updated cloud desktop through the virtual machine server 120; or the user at the side of the auxiliary desktop display device 130 and the user at the side of the cloud desktop display device 110 operate simultaneously to obtain an updated cloud desktop and an updated auxiliary desktop, the cloud desktop display device 110 and the auxiliary desktop display device 130 can receive the updated auxiliary desktop and the updated cloud desktop through the virtual machine server 120, so that the auxiliary desktop and the cloud desktop are synchronously displayed in real time, the cloud desktop display device 110 and the auxiliary desktop display device 130 can display consistent desktop images in real time, the user at the side of the cloud desktop display device 110 can experience a complete local PC, and the users at the side of the cloud desktop display device 110 and the auxiliary desktop display device 130 can operate together or in turn to realize common control of the same screen.
According to the cloud classroom common-screen common-control system, the cloud classroom common-screen common control is realized by establishing the butt joint of the remote assistance and the remote desktop protocol, because the remote assistance belongs to the system kernel service, extra memory occupation is not increased, the working stability is effectively improved, the operation response of a user is obviously improved, and the remote assistance only copies desktop images (namely a cloud desktop and an auxiliary desktop) for converting the remote desktop protocol, so that screen grabbing, compression and transmission processes in other modes are omitted, the system load is obviously reduced, the system is beneficial to intelligent screen grabbing of the remote desktop, and the occupation of bandwidth is reduced by orders of magnitude; native support is provided for high definition video.
In one embodiment, as shown in fig. 2, a method for sharing control of a same screen in a cloud classroom includes the following steps:
step S110: the cloud desktop display device generates a remote session ID after receiving the first access instruction, and sends the first cloud desktop access instruction and the remote session ID to the virtual machine server according to the first access instruction.
Specifically, the specific content of the first access instruction is not limited, and may be set according to the actual application requirement, so as to improve the flexibility.
Step S120: the virtual machine server receives the first cloud desktop access instruction and the remote session ID, and sends the cloud desktop to the cloud desktop display device to display according to the first cloud desktop access instruction.
Specifically, when the virtual machine server receives a first cloud desktop access instruction and a remote session ID sent by the cloud desktop display device, the cloud desktop is sent to the cloud desktop display device according to the first cloud desktop access instruction to be displayed, and the remote session ID is temporarily stored in the virtual machine server.
Step S130: and the auxiliary desktop display equipment receives the second access instruction and sends the second cloud desktop access instruction to the virtual machine server according to the second access instruction.
Specifically, the second access instruction is an instruction that the auxiliary desktop display device needs to access the cloud desktop of the cloud desktop display device, and the auxiliary desktop display device directly sends the second cloud desktop access instruction to the virtual machine server.
Step S140: and after receiving the second cloud desktop access instruction, the virtual machine server sends the remote session ID to the auxiliary desktop display equipment.
Specifically, after the virtual machine server receives the second cloud desktop access instruction, the daemon in the virtual machine server sends the remote session ID to the auxiliary desktop display device, so that the auxiliary desktop display device and the corresponding cloud desktop display device can realize co-control on the same screen.
Step S150: and the auxiliary desktop display equipment establishes a communication channel with the virtual machine server according to the received remote session ID and sends an auxiliary desktop access instruction to the virtual machine server.
Specifically, the auxiliary desktop display device receives the remote session ID, and establishes a communication channel with the virtual machine server according to the remote session ID and the IP address of the virtual machine server as a connection port, where the communication channel is used to establish the docking of the remote assistance and the remote desktop protocol.
Step S160: and after receiving the auxiliary desktop access instruction, the virtual machine server sends the auxiliary desktop to the auxiliary desktop display equipment for display through the communication channel.
In this embodiment, step S160 includes: after receiving the auxiliary desktop access instruction, the virtual machine server establishes the butt joint of remote assistance and a remote desktop protocol, copies a cloud desktop image generated by the remote desktop protocol as an auxiliary desktop, and sends the auxiliary desktop to auxiliary desktop display equipment for display.
Specifically, by establishing the butt joint of the remote assistance and the remote desktop protocol, a cloud desktop image generated by the remote desktop protocol is copied to serve as an auxiliary desktop, and the auxiliary desktop is sent to the auxiliary desktop display device to be displayed, so that the same-screen sharing of the cloud desktop display device and the auxiliary desktop display device is realized, the remote assistance belongs to the system kernel service, extra memory occupation is not increased, and the working stability is effectively improved. Remote assistance only copies desktop images (namely a cloud desktop and an auxiliary desktop) for converting a remote desktop protocol, screen capturing, compressing and transmitting processes in other modes are omitted, system load is remarkably reduced, intelligent screen capturing of the remote desktop is benefited, and occupation of bandwidth is reduced by orders of magnitude; native support is provided for high definition video.
In one embodiment, before step S110, step S102 is further included: and the virtual machine server receives the starting instruction, performs remote setting according to the starting instruction, and starts remote desktop service and remote assistance.
Specifically, in the control panel > system and security > system > remote setting, check: allowing remote connection to the computer and allowing remote assistance to connect to the computer to enable remote desktop services and remote assistance.
In one embodiment, before step S110, step S104 is further included: and the virtual machine server receives the first setting instruction and sets the group policy of the virtual machine server according to the first setting instruction.
In particular, group policies are the primary tools for Microsoft Windows system administrators to define and control programs, network resources, and operating system behavior for users and computers. Various software, computer, and user policies may be set by using a group policy. In this embodiment, the user may set the group policy of the virtual machine server as needed, so that the remote desktop session connection is completely controlled without authorization of the user, that is, when the auxiliary desktop display device needs to access the cloud desktop display device, the connection may be performed without authorization of the user on the cloud desktop display device side, or when the auxiliary desktop display device needs to access the cloud desktop display device, the connection may be performed only by authorization of the user on the cloud desktop display device side. The specific operation method is as follows, commanding the line to start gpedic.msc, under the policy path: the method comprises the following steps of connecting a computer \ a management template \ a Windows component \ a remote desktop service \ a remote desktop session host, setting rules for remote control of a remote desktop service user session as follows: either not fully controlled by user authorization or fully controlled by user authorization.
In one embodiment, before step S110, step S106 is further included: and the auxiliary desktop display equipment receives a second setting instruction and sets the access credential of the cloud desktop display equipment according to the second setting instruction. In this embodiment, step 106 specifically includes: and the auxiliary desktop display device receives the second setting instruction, accesses the management credential of the cloud desktop display device according to the second setting instruction, and adds the Windows credential, the IP address of the virtual machine server, the user name and the password in the management credential.
Specifically, the auxiliary desktop display device receives the second setting instruction, accesses a control panel of the cloud desktop display device > user management > local user > management credential according to the second setting instruction, adds a Windows credential, and completes setting of the access credential by the IP, the user name, and the password of the virtual machine server in the management credential.
In one embodiment, the cloud classroom co-screen control method further comprises the following steps: the cloud desktop display device receives the cloud desktop operation instruction, obtains an updated cloud desktop according to the cloud desktop operation instruction, sends the updated cloud desktop to the auxiliary desktop display device through the virtual machine server for display, and/or the auxiliary desktop display device receives the auxiliary desktop operation instruction, obtains an updated auxiliary desktop according to the auxiliary desktop operation instruction, and sends the updated auxiliary desktop to the cloud desktop display device through the virtual machine server for display.
According to the cloud classroom common-screen common-control method, the remote assistance belongs to system kernel service, the cloud classroom common-screen common-control is realized by starting the remote assistance service, extra memory occupation is not increased, the working stability is effectively improved, the response to the operation of a user is obviously improved, and the remote assistance only copies desktop images (namely a cloud desktop and an auxiliary desktop) for converting a remote desktop protocol, so that screen grabbing, compression and transmission processes in other modes are omitted, the system load is obviously reduced, the intelligent screen grabbing of the remote desktop is benefited, and the occupation of bandwidth is reduced by orders of magnitude; native support is provided for high-definition video, and the method has the advantages of simplicity, stability and high efficiency.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A cloud classroom common-screen common control system is characterized by comprising a cloud desktop display device, a virtual machine server and an auxiliary desktop display device,
the cloud desktop display equipment is used for generating a remote session ID after receiving a first access instruction, and sending the first cloud desktop access instruction and the remote session ID to the virtual machine server according to the first access instruction;
the virtual machine server is used for receiving the first cloud desktop access instruction and the remote session ID, and sending a cloud desktop to the cloud desktop display device for display according to the first cloud desktop access instruction; after receiving a second cloud desktop access instruction sent by the auxiliary desktop display device, sending the remote session ID to the auxiliary desktop display device; after receiving an auxiliary desktop access instruction sent by the auxiliary desktop display equipment, sending an auxiliary desktop to the auxiliary desktop display equipment through a communication channel for display;
the auxiliary desktop display equipment is used for receiving a second access instruction and sending the second cloud desktop access instruction to the virtual machine server according to the second access instruction; and establishing the communication channel with the virtual machine server according to the received remote session ID, and sending the auxiliary desktop access instruction to the virtual machine server.
2. The cloud classroom co-screen control system as claimed in claim 1, wherein the cloud desktop display device and the auxiliary desktop display device comprise desktop computers and/or notebook computers connected to the virtual machine server.
3. The cloud classroom co-screen control system as claimed in claim 1, wherein the first access instruction comprises an address, a username, and a password of an IP of the virtual machine server.
4. The cloud classroom same-screen co-control system according to claim 1, wherein the cloud desktop display device is further configured to obtain an updated cloud desktop according to a received cloud desktop operation instruction, and send the updated cloud desktop to the auxiliary desktop display device through the virtual machine server for display, and/or the auxiliary desktop display device is further configured to obtain an updated auxiliary desktop according to a received auxiliary desktop operation instruction, and send the updated auxiliary desktop to the cloud desktop display device through the virtual machine server for display.
5. A method for controlling a cloud classroom by sharing a screen is characterized by comprising the following steps:
the cloud desktop display equipment generates a remote session ID after receiving a first access instruction, and sends the first cloud desktop access instruction and the remote session ID to a virtual machine server according to the first access instruction;
the virtual machine server receives the first cloud desktop access instruction and the remote session ID, and sends a cloud desktop to the cloud desktop display device to display according to the first cloud desktop access instruction;
the auxiliary desktop display equipment receives a second access instruction and sends the second cloud desktop access instruction to the virtual machine server according to the second access instruction;
after receiving the second cloud desktop access instruction, the virtual machine server sends the remote session ID to the auxiliary desktop display device;
the auxiliary desktop display equipment establishes a communication channel with the virtual machine server according to the received remote session ID and sends an auxiliary desktop access instruction to the virtual machine server;
and after receiving the auxiliary desktop access instruction, the virtual machine server sends an auxiliary desktop to the auxiliary desktop display equipment for display through the communication channel.
6. The cloud classroom co-screen control method as claimed in claim 5, wherein before the step of generating a remote session ID by the cloud desktop display device after receiving the first access instruction and sending the first cloud desktop access instruction and the remote session ID to the virtual machine server according to the first access instruction, the method further comprises:
and the virtual machine server receives a starting instruction, performs remote setting according to the starting instruction, and starts remote desktop service and remote assistance.
7. The cloud classroom co-screen control method as claimed in claim 5, wherein before the step of generating a remote session ID by the cloud desktop display device after receiving the first access instruction and sending the first cloud desktop access instruction and the remote session ID to the virtual machine server according to the first access instruction, the method further comprises:
and the virtual machine server receives a first setting instruction and sets a group policy of the virtual machine server according to the first setting instruction.
8. The cloud classroom co-screen control method as claimed in claim 5, wherein before the step of generating a remote session ID by the cloud desktop display device after receiving the first access instruction and sending the first cloud desktop access instruction and the remote session ID to the virtual machine server according to the first access instruction, the method further comprises:
and the auxiliary desktop display equipment receives a second setting instruction and sets the access credential of the cloud desktop display equipment according to the second setting instruction.
9. The method for sharing control in the same screen in the cloud classroom as recited in claim 8, wherein the step of receiving a second setting instruction by the auxiliary desktop display device and setting the access credential of the cloud desktop display device according to the second setting instruction comprises:
and the auxiliary desktop display equipment receives a second setting instruction, accesses the management credential of the cloud desktop display equipment according to the second setting instruction, and adds a Windows credential, an IP address of a virtual machine server, a user name and a password in the management credential.
10. The method for sharing the same screen in the cloud classroom as recited in claim 5, wherein the step of sending an auxiliary desktop to the auxiliary desktop display device for display through the communication channel after the virtual machine server receives the auxiliary desktop access instruction comprises:
after receiving the auxiliary desktop access instruction, the virtual machine server establishes the butt joint of remote assistance and a remote desktop protocol, copies a cloud desktop image generated by the remote desktop protocol as an auxiliary desktop, and sends the auxiliary desktop to the auxiliary desktop display equipment for display.
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| CN107967184A (en) * | 2017-11-30 | 2018-04-27 | 北京奇艺世纪科技有限公司 | Method of attaching, device and electronic equipment are replicated in remote assistance |
| CN108491174A (en) * | 2018-02-01 | 2018-09-04 | 西安万像电子科技有限公司 | Picture transmission method, apparatus and system |
| CN110225415B (en) * | 2018-03-01 | 2022-06-21 | 中兴通讯股份有限公司 | Media file playing method |
| CN115052043B (en) * | 2022-06-14 | 2024-03-29 | 北京淳中科技股份有限公司 | Video transmission method, electronic equipment, device and medium of cloud desktop |
| CN117834696A (en) * | 2022-09-28 | 2024-04-05 | 中兴通讯股份有限公司 | Remote assistance method, device, electronic equipment, cloud desktop server and medium |
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