File sharing method and device for in-vehicle multi-screen scenario

Abstract

The application relates to a file sharing method and device for a multi-screen scene in a vehicle, and belongs to the terminal technical field. The method comprises the following steps: in response to an authority authentication operation of a sharing user, determining the authority authentication between the sharing user and a vehicle terminal; in response to a file selection operation of the sharing user, selecting a file to be stored in a space to be shared; sending the file to be shared in the space to be shared to the vehicle terminal, so that the vehicle terminal stores the file to be shared in a shared file space, and sends the file to be shared to a watching user terminal which has determined the authority authentication with the vehicle terminal; displaying the file to be shared and generating a file sharing instruction; enabling the vehicle terminal to synchronously display the file to be shared according to the file sharing instruction; and enabling the watching user terminal which has determined the authority authentication to synchronously display the file to be shared according to the file sharing instruction. The application has the advantage of improving the privacy of file sharing.

Description

Technical Field

[0001] This application relates to the field of terminal technology, and in particular to a file sharing method and device for in-vehicle multi-screen scenarios. Background Technology

[0002] With the development of automotive technology, the diversity and practicality of in-vehicle functions are gradually being valued by users. In addition to basic driving needs, some users also need file sharing functions while the vehicle is in motion, such as temporary meetings among passengers.

[0003] Currently, in existing technologies, when users share files in a car, they first establish a communication connection between the user's terminal and the vehicle's infotainment system, and then use screen mirroring to display the files to be shared on the vehicle's screen.

[0004] However, the inventors discovered that the existing technology has at least the following technical problems: when sharing files by casting the screen, other private files on the user's terminal will also be cast to the in-vehicle screen while the user is operating the terminal, resulting in low privacy of the shared data. Summary of the Invention

[0005] This application provides a file sharing method and apparatus for in-vehicle multi-screen scenarios to solve the problem of low privacy in the file sharing process under in-vehicle multi-screen scenarios, and has the advantage of improving the privacy of file sharing.

[0006] Firstly, this application provides a file sharing method for a multi-screen in-vehicle scenario, applied to the sharing user terminal, including:

[0007] In response to the user's permission authentication operation, determine the permission authentication between the user and the vehicle's infotainment system;

[0008] In response to the file selection operation of the sharing user, the selected file is saved to the sharing space;

[0009] The system selects a file to be shared in the shared file space and sends it to the vehicle-mounted terminal, so that the vehicle-mounted terminal stores the file to be shared in the shared file space and sends the file to the viewing user terminal that has established permission authentication with the vehicle-mounted terminal, wherein the permission authentication is determined based on the viewing user terminal's response to the viewing user's permission request operation;

[0010] In response to the file sharing operation of the sharing user, the file to be shared is displayed and a file sharing instruction is generated;

[0011] The file sharing instruction is sent to the vehicle's infotainment system so that the vehicle's infotainment system can synchronously display the file to be shared according to the file sharing instruction.

[0012] The file sharing instruction is sent to the viewing user terminal with confirmed permissions, so that the viewing user terminal with confirmed permissions synchronously displays the file to be shared according to the file sharing instruction.

[0013] In one possible implementation, the sharing user terminal, the vehicle-mounted terminal, and the viewing user terminal are all equipped with near-field communication (NFC) modules. Accordingly, in response to the sharing user's authentication operation, determining authentication with the vehicle-mounted terminal includes: determining authentication with the vehicle-mounted terminal via the NFC module in response to the sharing user's authentication operation. The step of selecting a file to be shared in the shared space and sending it to the vehicle-mounted terminal, so that the vehicle-mounted terminal stores the file to be shared in the shared file space and sends the file to the viewing user terminal whose authentication with the vehicle-mounted terminal has been determined, includes: selecting a file to be shared in the shared space and sending it to the vehicle-mounted terminal, so that the vehicle-mounted terminal stores the file to be shared in the shared file space and sends the file to the viewing user terminal whose authentication with the vehicle-mounted terminal has been determined, wherein the authentication is based on the viewing user terminal's response to the viewing user's authentication request operation via the NFC module.

[0014] In one possible implementation, after sending the file sharing instruction to the authorized viewing user terminal so that the authorized viewing user terminal synchronously displays the file to be shared according to the file sharing instruction, the method further includes: generating a deletion instruction in response to the sharing user's deletion operation; sending the deletion instruction to the vehicle-mounted terminal so that the vehicle-mounted terminal deletes the file to be shared according to the deletion instruction; and sending the deletion instruction to the authorized viewing user terminal so that the authorized viewing user terminal deletes the file to be shared according to the deletion instruction.

[0015] Secondly, this application provides a file sharing method for in-vehicle multi-screen scenarios, applied to the vehicle's infotainment system, including:

[0016] Determine the permission authentication between the sharing user terminal and the sharing user terminal, wherein the permission authentication is determined by the sharing user terminal in response to the sharing user's permission authentication operation;

[0017] Receive the file to be shared in the shared space sent by the sharing user terminal, and store the file to be shared in the shared file space, wherein the file to be shared is the file selected and stored in the shared space by the sharing user terminal in response to the file selection operation of the sharing user;

[0018] The file to be shared in the shared file space is sent to the viewing user terminal with verified permissions, wherein the permission verification is determined based on the viewing user terminal's response to the viewing user's permission request operation;

[0019] The system receives a file sharing instruction sent by the sharing user terminal and displays the file to be shared synchronously according to the file sharing instruction, wherein the file sharing instruction is generated by the sharing user terminal in response to the file sharing operation of the sharing user and displays the file to be shared.

[0020] In one possible implementation, the sharing user terminal, the vehicle-mounted terminal, and the viewing user terminal are all equipped with near-field communication (NFC) modules. Accordingly, determining the authorization authentication with the sharing user terminal, wherein the authorization authentication is determined by the sharing user terminal in response to the sharing user's authorization authentication operation, includes: determining the authorization authentication with the sharing user terminal, wherein the authorization authentication is determined by the sharing user terminal in response to the sharing user's authorization authentication operation via the NFC module; sending the file to be shared to the viewing user terminal with authorized authentication, wherein the authorization authentication is determined based on the viewing user terminal's authorization request operation in response to the viewing user's authorization request operation via the NFC module, includes: sending the file to be shared to the viewing user terminal with authorized authentication, wherein the authorization authentication is determined based on the viewing user terminal's authorization request operation in response to the viewing user's authorization request operation via the NFC module.

[0021] In one possible implementation, after synchronously displaying the file to be shared according to the file sharing instruction, the method further includes: receiving a deletion instruction sent by the sharing user terminal, and deleting the file to be shared according to the deletion instruction, wherein the deletion instruction is generated by the sharing user terminal in response to the deletion operation of the sharing user.

[0022] Thirdly, this application provides a file sharing method for in-vehicle multi-screen scenarios, applied to the viewing user end, the method including:

[0023] In response to a user's permission request, the system determines the permission authentication between the user and the vehicle-mounted system.

[0024] Receive a file to be shared from the vehicle terminal, wherein the file to be shared is a file selected and stored in the file to be shared space by the sharing user terminal in response to the sharing user's file selection operation, and then selected and sent to the vehicle terminal from the file to be shared space;

[0025] The system receives a file sharing instruction sent by the vehicle-mounted terminal and displays the file to be shared synchronously according to the file sharing instruction. The file sharing instruction is generated by the sharing user terminal in response to the sharing user's file sharing operation and displays the file to be shared.

[0026] In one possible implementation, the sharing user terminal, the vehicle terminal, and the viewing user terminal are all equipped with near-field communication (NFC) modules; correspondingly, the step of determining the permission authentication with the vehicle terminal in response to the viewing user's permission request operation includes: determining the permission authentication with the vehicle terminal through the NFC module in response to the viewing user's permission request operation.

[0027] In one possible implementation, after synchronously displaying the file to be shared according to the file sharing instruction, the method further includes: receiving a deletion instruction sent by the sharing user terminal, and deleting the file to be shared according to the deletion instruction, wherein the deletion instruction is generated by the sharing user terminal in response to the deletion operation of the sharing user.

[0028] Fourthly, this application provides a file sharing device for in-vehicle multi-screen scenarios, applied to sharing user terminals, including:

[0029] The first permission management module is used to respond to the permission authentication operation of the sharing user and determine the permission authentication between the vehicle terminal;

[0030] The first file storage and transmission module is used to select a file and store it in the sharing space in response to the file selection operation of the sharing user.

[0031] The file storage and transmission module is further configured to select a file to be shared in the shared space and send it to the vehicle terminal, so that the vehicle terminal stores the file to be shared in the shared file space and sends the file to be shared to the viewing user terminal that has determined the permission authentication with the vehicle terminal, wherein the permission authentication is determined based on the viewing user terminal's response to the viewing user's permission request operation;

[0032] The first multi-screen synchronization module is used to respond to the file sharing operation of the sharing user, display the file to be shared and generate a file sharing instruction;

[0033] The first multi-screen synchronization module is used to send the file sharing instruction to the vehicle terminal, so that the vehicle terminal can synchronously display the file to be shared according to the file sharing instruction;

[0034] The first multi-screen synchronization module is further configured to send the file sharing instruction to the viewing user terminal with confirmed permissions, so that the viewing user terminal with confirmed permissions synchronously displays the file to be shared according to the file sharing instruction.

[0035] The file sharing method and apparatus for in-vehicle multi-screen scenarios provided in this application establishes a communication connection with the vehicle's infotainment system by determining authorization and authentication. Then, in response to a user's file selection operation, the system selects a file and stores it in a sharing space. Only files in this sharing space can be downloaded or viewed, thus improving privacy. Furthermore, the file to be shared is only sent to authorized users; other users without authorization cannot display its content. Therefore, when the file is displayed, it is simultaneously shown on both the vehicle's infotainment system and authorized users, further enhancing privacy. Attached Figure Description

[0036] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0037] Figure 1 A schematic diagram illustrating the application scenario of the file sharing method for in-vehicle multi-screen scenarios provided in this application embodiment;

[0038] Figure 2 A flowchart illustrating the file sharing method for in-vehicle multi-screen scenarios provided in this application embodiment. Figure 1 ;

[0039] Figure 3 A schematic diagram illustrating the process of determining authorization authentication between the sharing user terminal and the vehicle terminal in an embodiment of this application;

[0040] Figure 4 A flowchart illustrating the file sharing method for in-vehicle multi-screen scenarios provided in this application embodiment. Figure 2 ;

[0041] Figure 5 A flowchart illustrating the file sharing method for in-vehicle multi-screen scenarios provided in this application embodiment. Figure 3 ;

[0042] Figure 6 A schematic diagram of the interaction flow of the file sharing method in a multi-screen in-vehicle scenario provided in this application embodiment;

[0043] Figure 7 A schematic diagram of the structure of the file sharing device for in-vehicle multi-screen scenarios provided in this application embodiment. Figure 1 ;

[0044] Figure 8 A schematic diagram of the structure of the file sharing device for in-vehicle multi-screen scenarios provided in this application embodiment. Figure 2 ;

[0045] Figure 9 A schematic diagram of the structure of the file sharing device for in-vehicle multi-screen scenarios provided in this application embodiment. Figure 3 ;

[0046] Figure 10 This is a schematic diagram of the hardware structure of a file sharing device for an in-vehicle multi-screen scenario provided in an embodiment of this application. Detailed Implementation

[0047] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0048] Currently, in certain specialized use cases, such as in-car multi-screen applications, users require vehicles to provide personalized functions. For example, when a user sharing within the car needs to report work to other viewers while the vehicle is in motion, the file needs to be displayed simultaneously on multiple screens for at least one viewer. In existing technologies, users often use screen mirroring software to project the entire content displayed on the user's terminal onto the in-car screen in real time. However, to avoid privacy breaches, users need to carefully check before sharing files to ensure they don't contain sensitive information and close or delete them. During file sharing, they also need to be aware of any messages or materials containing sensitive information being sent, resulting in low user data privacy and inconvenient file sharing.

[0049] To address the aforementioned technical problems, this application provides the following technical concept: First, a communication connection is established between the vehicle-mounted terminal, the sharing user terminal, and each viewing user terminal. Then, the sharing user terminal selects a file and saves it to the sharing space. Next, the file to be shared is uploaded to the shared space on the vehicle-mounted terminal and synchronized to the viewing user terminal with verified permissions. Then, screen content synchronization is achieved between the sharing user terminal, the viewing user terminal, and the vehicle-mounted terminal. The actions performed by the sharing user are visible to the viewing user terminal and the vehicle-mounted terminal, but the viewing user can only see the file content of the shared file. This achieves a file sharing process that is only visible to a specific screen, thus improving privacy.

[0050] Figure 1 This is a schematic diagram illustrating the application scenario of the file sharing method in a multi-screen in-vehicle environment provided in the embodiments of this application, such as... Figure 1As shown, it includes: a sharing user terminal 101, a vehicle terminal 102, and at least one viewing user terminal 103.

[0051] The sharing user terminal 101 is the terminal device used by users who need to share files. This terminal device can be a mobile phone, laptop, or tablet. The sharing user terminal 101 is equipped with an event controller, which is used to send or receive file sharing instructions generated based on the sharing user's sharing operation, thereby displaying the file to be shared on the sharing user terminal 101. The vehicle terminal 102's storage space includes a shared file space, which is used to store the files to be shared uploaded from the sharing user terminal 101, for each viewing user terminal 103 to view online or download and store for later viewing. The viewing user terminal 103 is the terminal device used by the viewing user. When the sharing user terminal 101 is sharing in real time, the vehicle terminal 102 and other viewing user terminals 103 can choose to join the real-time sharing process. Once the real-time sharing process is initiated, the user's actions on the sharing client will generate a file sharing command, which will be sent to the vehicle-mounted terminal 102 and other viewing client terminals that have joined the real-time sharing process. The file sharing command will take effect simultaneously on the sharing client 102, the vehicle-mounted terminal 102, and the viewing client 103. The file content to be shared will be displayed synchronously in real time on the sharing client 101, the vehicle-mounted terminal 102, and the viewing client 103 to complete the sharing of the file.

[0052] Figure 2 A flowchart illustrating the file sharing method for in-vehicle multi-screen scenarios provided in this application embodiment. Figure 1 The execution entity in this embodiment can be Figure 1 The sharing client 101 in the illustrated embodiment can also be other computer-related devices; this embodiment is not particularly limited. Figure 3 As shown, the method includes:

[0053] S201: In response to the user's permission authentication operation, determine the permission authentication between the user and the vehicle's infotainment system.

[0054] In this embodiment, the authorization process can be conducted via wireless communication.

[0055] Specifically, in an optional embodiment of this application, the sharing user terminal, the vehicle terminal, and the viewing user terminal with verified permissions are all equipped with a near-field communication (NFC) module.

[0056] Figure 3 This application provides a schematic diagram illustrating the process of determining authorization authentication between the sharing user terminal and the vehicle terminal in an embodiment of the invention. Figure 1This diagram illustrates how the file-sharing method in a multi-screen in-vehicle scenario establishes a wireless communication connection and performs authentication between the sharing user terminal 101 and the vehicle infotainment system 102 via the NFC module. It's important to note that the NFC module is deployed as a hardware-based NFC processor in both the sharing user terminal 101 and the vehicle infotainment system 102. Both the sharing user terminal 101 and the vehicle infotainment system 102 have an application installed for file sharing. For example, this application could be installed on an operating system such as Apple, Android, or HarmonyOS, and could be a mini-program. Figure 3 As shown, the method includes the following steps:

[0057] S301: The sharing user opens the pre-installed application on the sharing user's end and clicks Start Connection.

[0058] S302: The sharing user brings the sharing user terminal close to the vehicle's infotainment system, enabling the sharing user terminal and the vehicle's infotainment system to launch a pre-installed application via the NFC processor on the vehicle's infotainment system.

[0059] S303: The vehicle's infotainment system uses the NFC processor to send the in-vehicle local area network communication connection information and authorization password back to the sharing user's device.

[0060] S304: The user terminal establishes a communication connection with the vehicle terminal based on the pre-stored local area network communication connection information and the authorization password.

[0061] In this embodiment, the NFC processor of the sharing user terminal and the vehicle's infotainment system is used for auxiliary communication, avoiding the WiFi search process and the authentication process of entering a username and password. Only users with verified permissions can share files. Permission authentication can be user permissions, which may include sharing permissions, viewing permissions, and management permissions. Furthermore, user permissions can be recorded in a pre-stored user permission database table on the vehicle's infotainment system. An example of a pre-stored user permission database table is shown below:

[0062]

[0063] There is only one user management permission, namely the vehicle-mounted system. There is also only one sharing user permission. If there is currently no sharing user, the sharing user needs to apply for sharing user permission through their own sharing user. Viewing user permission can be one or more, meaning all viewing user terminals that have established a communication connection with the vehicle-mounted system.

[0064] For example: Sharing user permissions can include: 1. Permission to upload files to be shared to the vehicle's infotainment system. 2. Permission to set permissions for files to be uploaded. 3. Permission to view, delete, or download all files to be shared, depending on their category. 4. Permission to send sharing commands for real-time sharing. 5. Permission to release sharing permissions. Observer user permissions can include: 1. Permission to view the sharer's real-time sharing content. 2. Permission to view, delete, or download files to be shared, depending on their file permissions. 3. Permission to request sharing user permissions. 4. Permission to join real-time sharing and receive sharing commands. Managing user permissions can include: 1. Setting or modifying permissions for all files to be shared. 2. Permission to view or delete files to be shared, depending on their category. 3. Granting and revoking sharing user permissions.

[0065] S202: In response to the file selection operation of the sharing user, select the file and save it to the sharing space.

[0066] In this implementation, selecting files to save to the sharing space refers to the process by which the sharing user saves files that may be shared to the sharing space on the sharing user's end through actions such as clicking, checking, or dragging. The sharing space can be the storage space on the sharing user's end used to store files that need to be shared. For example, the sharing space can be a folder or an encrypted independent system.

[0067] S203: Select the file to be shared in the sharing space and send it to the vehicle terminal so that the vehicle terminal will store the file to be shared in the shared file space and send the file to be shared to the viewing user terminal that has determined the permission authentication with the vehicle terminal, wherein the permission authentication is determined based on the viewing user terminal's response to the viewing user's permission request operation.

[0068] In this embodiment, selecting a file to be shared in the shared file space can be an action completed in response to the sharing user's selection operation. The file to be shared can be a file that the sharing user will soon display synchronously on the vehicle's infotainment system and the viewing user's device. The shared file space can be the storage space on the vehicle's infotainment system used to store the file to be shared. For example, the shared file space can be a shared folder or an encrypted shared independent system, which can be accessed by viewing and sharing users with verified permissions, allowing users to perform operations such as opening, closing, downloading, or deleting files.

[0069] Specifically, in an optional embodiment of this application, the sharing user terminal, the vehicle terminal, and the viewing user terminal that has been authenticated with permission are all equipped with near-field communication (NFC) modules. Accordingly, step S203 includes:

[0070] Select the file to be shared in the shared space and send it to the vehicle's infotainment system. The infotainment system will then store the file in the shared file space and send it to the viewing user's device after the user has been authenticated with the infotainment system. The authentication is based on the viewing user's device responding to the user's permission request via the NFC module.

[0071] In this embodiment, the process of determining the permission authentication between the user terminal and the vehicle terminal is observed. Figure 3 The process of determining permissions and authentication between the sharing user terminal and the vehicle terminal is similar, so it will not be described again here in the embodiments of this application.

[0072] S204: In response to the user's file sharing operation, display the file to be shared and generate a file sharing instruction.

[0073] In this embodiment, the file sharing operation can be a browsing operation performed by the sharing user on the sharing user's terminal to share a file. For example, the file sharing operation can include conventional browsing operations such as opening a file, clicking to turn pages, clicking to play, pausing, switching between portrait and landscape modes, and zooming. In this embodiment, displaying the file to be shared can be displaying the file content on the display screen of the sharing user's terminal to show or refresh the file to be shared. The file sharing command can be a script or instruction used to synchronously display the file to be shared on the vehicle-mounted system or the viewing user's terminal.

[0074] S205: Send the file sharing command to the vehicle's infotainment system so that the system can display the file to be shared synchronously according to the command.

[0075] In this embodiment, synchronous display means that the sharing user terminal and the vehicle terminal display the same file content for a sharing operation by the sharing user.

[0076] S206: Send the file sharing instruction to the authorized viewing user terminal so that the authorized viewing user terminal can synchronously display the file to be shared according to the file sharing instruction.

[0077] In this embodiment, synchronous display refers to the sharing user terminal and the viewing user terminal displaying the same file content for a single sharing operation by the sharing user. That is, in steps S203 to 206, without considering communication transmission delay, it can be considered that the sharing user terminal, the vehicle-mounted terminal, and the viewing user terminal simultaneously display the same file content for a single sharing operation by the sharing user.

[0078] In summary, the file sharing method for in-vehicle multi-screen scenarios provided in this application establishes a communication connection with the vehicle's infotainment system by determining permission authentication. Then, in response to the sharing user's file selection operation, the selected file is stored in the sharing space. Only files in the sharing space can be downloaded or viewed, thus improving privacy. Furthermore, only when the file to be shared is sent to the viewing user with confirmed permissions; other viewing users without confirmed permissions cannot display the content of the file. Therefore, when the file to be shared is displayed, it is simultaneously displayed on the vehicle's infotainment system and the viewing user with confirmed permissions, further enhancing privacy.

[0079] Based on the above embodiments, in an optional embodiment of this application, after step S206, the method further includes:

[0080] Step A1: In response to the sharer's deletion operation, generate a deletion command.

[0081] Step A2: Send the deletion command to the vehicle's infotainment system so that the system can delete the file to be shared according to the command.

[0082] Step A3: Send the deletion command to the authorized viewing user's terminal so that the authorized viewing user's terminal deletes the file to be shared according to the deletion command.

[0083] In this embodiment, when a user finishes sharing the file to be shared, a deletion operation can be performed, such as selecting the file to be shared and clicking the delete button. The deletion command can be a command or script used to perform the deletion operation on the vehicle's infotainment system.

[0084] In summary, the file sharing method provided in this application, by deleting the file to be shared saved on the vehicle terminal after the file sharing process is completed, can not only prevent the file to be shared from being leaked when someone uses the vehicle terminal later, but also save storage space on the vehicle terminal and provide convenience for subsequent file sharing.

[0085] Figure 4 A flowchart illustrating the file sharing method for in-vehicle multi-screen scenarios provided in this application embodiment. Figure 2 The execution entity in this embodiment can be Figure 2 The vehicle terminal 102 in the illustrated embodiment can also be other computer-related devices, and this embodiment is not particularly limited.

[0086] like Figure 4 As shown, the file sharing methods in this in-vehicle multi-screen scenario include:

[0087] S401: Determine the authorization authentication between the sharing user terminal and the sharing user terminal, wherein the authorization authentication is determined by the sharing user terminal in response to the sharing user's authorization authentication operation.

[0088] In this embodiment, the authentication of permissions between the user terminal and the sharing terminal can be determined by using contactless permission granting to pass authentication.

[0089] Specifically, in an optional embodiment of this application, the sharing user terminal, the vehicle-mounted terminal, and the viewing user terminal that has undergone authorization verification are all equipped with near-field communication (NFC) modules. Accordingly, step S401 includes:

[0090] Determine the authorization authentication between the sharing user terminal and the sharing user terminal, wherein the authorization authentication is determined by the sharing user terminal in response to the authorization authentication operation of the sharing user through the NFC module.

[0091] In this embodiment, the permission authentication operation via the NFC module can be performed when the sharing user brings the sharing user terminal close to the vehicle terminal. The vehicle terminal and the sharing user terminal quickly establish a communication connection via NFC, and the vehicle terminal sends the permission authentication password back to the sharing user terminal via the NFC module to confirm permission authentication.

[0092] S402: Receive the file to be shared from the shared space sent by the sharing client, and save the file to be shared into the shared file space, wherein the file to be shared is the file selected and saved into the shared space by the sharing client in response to the sharing user's file selection operation.

[0093] In this embodiment, the file to be shared in the shared space sent by the receiving user terminal can be transferred via the vehicle's wireless local area network or the operator's mobile internet. The files in the shared file space and the file to be shared space can be synchronized; when a file to be shared is deleted from the file to be shared space, the corresponding file to be shared in the shared space will also be deleted.

[0094] S403: Send the file to be shared in the shared file space to the viewing user's terminal with verified permissions, wherein the permission verification is determined based on the viewing user's terminal's response to the viewing user's permission request operation.

[0095] In this embodiment, only authorized viewing users can receive files to be shared from the shared file space. Each viewing user also has its own shared space, and the data in the viewing user's shared space and the vehicle's shared space can be synchronized. When a file in the shared file space is deleted, the file in the shared file space is also deleted.

[0096] Specifically, in an optional embodiment of this application, the sharing user terminal, the vehicle-mounted terminal, and the viewing user terminal with verified permissions are all equipped with near-field communication (NFC) modules. Accordingly, in step S403, the file to be shared is sent to the viewing user terminal with verified permissions, wherein the permission verification is determined based on the viewing user terminal's response to the viewing user's permission request operation, including:

[0097] The file to be shared is sent to the viewing user's terminal that has been authenticated and has been granted permission. The permission authentication is determined based on the viewing user's terminal responding to the viewing user's permission request operation via the NFC module.

[0098] In this implementation, the specific permission request operation for viewing users can be referred to the permission request operation for sharing users, so it will not be repeated here.

[0099] S404: Receives a file sharing instruction sent by the sharing client and displays the file to be shared synchronously according to the file sharing instruction. The file sharing instruction is generated by the sharing client in response to the sharing user's file sharing operation and when it displays the file to be shared.

[0100] In this embodiment, the file sharing instruction can be generated by the sharing user terminal in response to the sharing user's file sharing-related operations on the sharing user terminal. The process of the vehicle-mounted system synchronously displaying the file to be shared according to the file sharing instruction is as follows: Figure 2 Step S205 in the illustrated embodiment has been described, so it will not be repeated here.

[0101] In summary, the file sharing method for in-vehicle multi-screen scenarios provided in this application embodiment achieves synchronized file sharing in in-vehicle multi-screen scenarios and improves privacy by setting up a shared file space on the vehicle's infotainment system, synchronizing data with the space to be shared on the sharing user's end, and only sending the file to be shared to the viewing user's end with confirmed permissions.

[0102] Based on the above embodiments, an optional embodiment of this application provides a file sharing method for in-vehicle multi-screen scenarios, which, after synchronously displaying the file to be shared according to the file sharing instruction in step S404, further includes:

[0103] Step B1: Receive the deletion command sent by the sharing user client, and delete the file to be shared according to the deletion command, wherein the deletion command is generated by the sharing user client in response to the deletion operation of the sharing user.

[0104] In this embodiment, the principle and technical effect of the deletion command and the deletion of the file to be shared according to the deletion command are similar to step A2 in the above embodiment, so they will not be described again here.

[0105] Figure 5 A flowchart illustrating the file sharing method for in-vehicle multi-screen scenarios provided in this application embodiment. Figure 3 The execution entity in this embodiment can be Figure 2 The viewing user terminal 103 in the illustrated embodiment can also be other computer-related devices, and this embodiment is not particularly limited.

[0106] like Figure 5As shown, the file sharing methods in this in-vehicle multi-screen scenario include:

[0107] S501: In response to the user's permission request, determine the permission authentication between the user and the vehicle's infotainment system.

[0108] In this embodiment, the permission request operation of the viewing user can be the process of the viewing user bringing the viewing user terminal close to the vehicle terminal.

[0109] Specifically, in an optional embodiment of this application, the sharing user terminal, the vehicle terminal, and the viewing user terminal are all equipped with near-field communication (NFC) modules; accordingly, step S501 includes: in response to the viewing user's permission request operation, determining the permission authentication between the user and the vehicle terminal through the NFC module.

[0110] S502: Receives files to be shared from the vehicle's infotainment system. The files to be shared are files selected and saved to the sharing space by the sharing user in response to the sharing user's file selection operation. The sharing user then selects and sends these files to the vehicle's infotainment system from the sharing space.

[0111] In this embodiment, the file to be shared sent by the vehicle's infotainment system can be transmitted via the vehicle's Wi-Fi or mobile internet. The file to be shared is any file selected by the sharing user in the sharing space, and it will be synchronized to the sharing space on the viewing user's device.

[0112] S503: Receives the file sharing instruction sent by the vehicle-mounted terminal and displays the file to be shared synchronously according to the file sharing instruction. The file sharing instruction is generated by the sharing user terminal in response to the sharing user's file sharing operation and displays the file to be shared.

[0113] In this embodiment, the file sharing instruction can be generated by the sharing user terminal in response to the sharing user's file sharing-related operations on the sharing user terminal. The process of the viewing user terminal synchronously displaying the file to be shared according to the file sharing instruction is as follows: Figure 2 Step S206 in the illustrated embodiment has been described, so it will not be repeated here.

[0114] In summary, the file sharing method for in-vehicle multi-screen scenarios provided in this application improves privacy by sending the file to be shared to a viewing user terminal with confirmed permissions, thus preventing other viewing users from viewing the shared content.

[0115] Based on the above embodiments, in an optional embodiment of this application, after synchronously displaying the file to be shared according to the file sharing instruction in step S503, the method further includes:

[0116] Step C1: Receive the deletion command sent by the sharing user client, and delete the file to be shared according to the deletion command, wherein the deletion command is generated by the sharing user client in response to the deletion operation of the sharing user.

[0117] In this embodiment, the principle and technical effect of the deletion instruction and the deletion of the file to be shared according to the deletion instruction are similar to step A3 in the above embodiment, so they will not be repeated here.

[0118] Figure 6 This is a schematic diagram of the interaction flow of the file sharing method in a multi-screen in-vehicle scenario provided in this application embodiment. To simplify the interaction process, the number of sharing user terminal, vehicle terminal, and viewing user terminal is one each. Figure 6 As shown. The method includes:

[0119] S601: The sharing user terminal responds to the sharing user's permission authentication operation and determines the permission authentication between the sharing user and the vehicle terminal.

[0120] S602: The sharing client responds to the sharing user's file selection operation and selects a file to save to the sharing space.

[0121] S603: The user terminal selects the file to be shared in the space to be shared and sends it to the vehicle terminal.

[0122] S604: The vehicle's infotainment system saves the files to be shared to the shared file space.

[0123] S605: The user terminal responds to the user's permission request operation and confirms the permission authentication between the user terminal and the vehicle terminal.

[0124] S606: The vehicle's infotainment system sends the files to be shared from the shared file space to the viewing user's terminal that has been verified with the correct permissions.

[0125] S606: The sharing client responds to the sharing user's file sharing operation, displays the file to be shared, and generates a file sharing instruction.

[0126] S607: The user terminal sends a file sharing command to the vehicle terminal.

[0127] S608: The sharing client sends a file sharing command to the viewing client that has been verified for permissions.

[0128] S609: The vehicle's infotainment system displays the file to be shared synchronously based on the file sharing command.

[0129] S6010: Viewing users with verified permissions will synchronously display the file to be shared according to the file sharing command.

[0130] In this embodiment, if the time taken for data transmission is not considered, steps S606 to S6010 are performed simultaneously. That is, when the sharing user performs a file sharing operation on the file to be shared on the sharing user terminal, the events generated for the file to be shared are generated simultaneously on both the vehicle terminal and the viewing user terminal to complete the real-time screen sharing of the file to be shared.

[0131] Figure 7 A schematic diagram of the structure of the file sharing device for in-vehicle multi-screen scenarios provided in this application embodiment. Figure 1 The device includes: a first permission management module 71, a first file storage and transmission module 72, and a first multi-screen synchronization module 73.

[0132] The first permission management module 71 is used to respond to the permission authentication operation of the sharing user and determine the permission authentication with the vehicle terminal.

[0133] The first file storage and transmission module 72 is used to select a file and store it in the space to be shared in response to the file selection operation of the sharing user.

[0134] The first file storage and transmission module 72 is further configured to select a file to be shared in the sharing space and send it to the vehicle terminal, so that the vehicle terminal stores the file to be shared in the shared file space and sends the file to be shared to the viewing user terminal that has determined the permission authentication with the vehicle terminal, wherein the permission authentication is determined based on the viewing user terminal's response to the viewing user's permission request operation;

[0135] The first multi-screen synchronization module 73 is used to respond to the file sharing operation of the sharing user, display the file to be shared and generate a file sharing instruction;

[0136] The first multi-screen synchronization module 73 is used to send file sharing instructions to the vehicle terminal so that the vehicle terminal can synchronously display the file to be shared according to the file sharing instructions;

[0137] The first multi-screen synchronization module 73 is also used to send file sharing instructions to the viewing user terminal with confirmed permissions, so that the viewing user terminal with confirmed permissions synchronously displays the file to be shared according to the file sharing instructions.

[0138] In an optional embodiment of this application, the sharing user terminal, the vehicle-mounted terminal, and the viewing user terminal are all equipped with near-field communication (NFC) modules. Correspondingly, the first permission management module 71 is specifically used to: determine permission authentication with the vehicle-mounted terminal via the NFC module in response to the sharing user's permission authentication operation; select a file to be shared in the sharing space and send it to the vehicle-mounted terminal, so that the vehicle-mounted terminal stores the file to be shared in the shared file space and sends the file to be shared to the viewing user terminal whose permission authentication has been determined with the vehicle-mounted terminal, wherein the permission authentication is determined based on the viewing user terminal's response to the viewing user's permission request operation via the NFC module.

[0139] In an optional embodiment of this application, the first file storage and transmission module 72 is further configured to: generate a deletion instruction in response to the deletion operation of the sharing user; send the deletion instruction to the vehicle terminal so that the vehicle terminal deletes the file to be shared according to the deletion instruction; and send the deletion instruction to the viewing user terminal with confirmed permissions so that the viewing user terminal with confirmed permissions deletes the file to be shared according to the deletion instruction.

[0140] The file sharing device for in-vehicle multi-screen scenarios provided in this embodiment can be used to perform the above-mentioned tasks. Figure 2 The technical solutions of the method embodiments shown are similar in implementation principle and technical effect, and will not be described again here.

[0141] Figure 8 A schematic diagram of the structure of the file sharing device for in-vehicle multi-screen scenarios provided in this application embodiment. Figure 1 The device includes: a second permission management module 81, a second file storage and transmission module 82, and a second multi-screen synchronization module 83.

[0142] The second permission management module 81 is used to determine the permission authentication between the sharing user terminal and the sharing user terminal, wherein the permission authentication is determined by the sharing user terminal in response to the sharing user's permission authentication operation;

[0143] The second file storage and transmission module 82 is used to receive the file to be shared in the shared space sent by the sharing user terminal, and to store the file to be shared into the shared file space, wherein the file to be shared is the file selected and stored into the shared space by the sharing user terminal in response to the file selection operation of the sharing user.

[0144] The second file storage and transmission module 82 is also used to send the file to be shared in the shared file space to the viewing user terminal with confirmed permissions, wherein the permission authentication is determined based on the viewing user terminal's response to the viewing user's permission request operation;

[0145] The second multi-screen synchronization module 83 is used to receive file sharing instructions sent by the sharing user terminal and synchronously display the file to be shared according to the file sharing instructions. The file sharing instructions are generated by the sharing user terminal in response to the sharing user's file sharing operation and when displaying the file to be shared.

[0146] In an optional embodiment of this application, the sharing user terminal, the vehicle terminal, and the viewing user terminal are all equipped with a near-field communication (NFC) module. Accordingly, the second permission management module 81 is specifically used to: in response to the permission request operation of the viewing user, determine the permission authentication between the user and the vehicle terminal through the NFC module.

[0147] In an optional embodiment of this application, the second file storage and transmission module 82 is further configured to: receive a deletion instruction sent by the sharing user terminal, and delete the file to be shared according to the deletion instruction, wherein the deletion instruction is generated by the sharing user terminal in response to the deletion operation of the sharing user.

[0148] The file sharing device for in-vehicle multi-screen scenarios provided in this embodiment can be used to perform the above-mentioned tasks. Figure 4 The technical solutions of the method embodiments shown are similar in implementation principle and technical effect, and will not be described again here.

[0149] Figure 9 A schematic diagram of the structure of the file sharing device for in-vehicle multi-screen scenarios provided in this application embodiment. Figure 3 The device includes: a third permission management module 91, a third file storage and transmission module 92, and a third multi-screen synchronization module 93.

[0150] The third permission management module 91 is used to respond to the permission request operation of the viewing user and determine the permission authentication with the vehicle terminal.

[0151] The third file storage and transmission module 92 is used to receive files to be shared sent by the vehicle terminal. The files to be shared are files selected and stored in the sharing space by the sharing user in response to the sharing user's file selection operation, and then selected and sent to the vehicle terminal from the sharing space.

[0152] The third multi-screen synchronization module 93 is used to receive file sharing instructions sent by the vehicle-mounted terminal and synchronously display the file to be shared according to the file sharing instructions. The file sharing instructions are generated by the sharing user terminal in response to the sharing user's file sharing operation and when displaying the file to be shared.

[0153] In an optional embodiment of this application, the sharing user terminal, the vehicle-mounted terminal, and the viewing user terminal are all equipped with near-field communication (NFC) modules. Accordingly, the third permission management module 91 is specifically used to: in response to the viewing user's permission request operation, determine the permission authentication between the user and the vehicle-mounted terminal through the NFC module.

[0154] In an optional embodiment of this application, the third file storage and transmission module 92 is further configured to: receive a deletion instruction sent by the sharing user terminal, and delete the file to be shared according to the deletion instruction, wherein the deletion instruction is generated by the sharing user terminal in response to the deletion operation of the sharing user.

[0155] The file sharing device for in-vehicle multi-screen scenarios provided in this embodiment can be used to perform the above-mentioned tasks. Figure 5 The technical solutions of the method embodiments shown are similar in implementation principle and technical effect, and will not be described again here.

[0156] Figure 10This is a schematic diagram of the hardware structure of a file-sharing device for an in-vehicle multi-screen scenario provided in an embodiment of this application, such as... Figure 10 As shown, the device includes: at least one processor 1001, a memory 1002, and a near field communication (NFC) processor 1003;

[0157] The NFC processor 1003 is used to implement wireless communication.

[0158] Processor 1001 is used to store instructions for computer execution.

[0159] The memory 1002 is used to execute computer execution instructions stored in the memory to implement the various steps involved in the above method embodiments. For details, please refer to the relevant descriptions in the foregoing method embodiments.

[0160] Optionally, the memory 1002 can be either standalone or integrated with the processor 1001.

[0161] When the memory 1002 is set up independently, the device also includes a bus 1004 for connecting the memory 1002 and the processor 1001.

[0162] This application also provides a computer-readable storage medium storing computer-executable instructions. When the processor executes the computer-executable instructions, the file sharing method in the above-mentioned in-vehicle multi-screen scenario is implemented.

[0163] This application also provides a computer program product, including a computer program that, when executed by a processor, implements the file sharing method for the above-mentioned in-vehicle multi-screen scenario.

[0164] In the several embodiments provided in this application, it should be understood that the disclosed apparatus and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of modules described above is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple modules may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces, or indirect coupling or communication connection between apparatuses or modules, and may be electrical, mechanical, or other forms.

[0165] The modules described above as separate components may or may not be physically separate. The components shown as modules may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to implement the solution of this embodiment according to actual needs.

[0166] Furthermore, the functional modules in the various embodiments of the present invention can be integrated into one processing unit, or each module can exist physically separately, or two or more modules can be integrated into one unit. The unit composed of the above modules can be implemented in hardware or in the form of hardware plus software functional units.

[0167] The integrated modules described above, implemented as software functional modules, can be stored in a computer-readable storage medium. These software functional modules, stored in a storage medium, include several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) or processor to execute partial steps of the methods of the various embodiments of this application.

[0168] It should be understood that the aforementioned processor can be a Central Processing Unit (CPU), or other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), etc. A general-purpose processor can be a microprocessor or any conventional processor. The steps of the method disclosed in this invention can be directly manifested as being executed by a hardware processor, or executed by a combination of hardware and software modules within the processor.

[0169] The memory may include high-speed RAM, and may also include non-volatile memory (NVM), such as at least one disk storage device, and may also be a USB flash drive, portable hard drive, read-only memory, disk or optical disc, etc.

[0170] The bus can be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, or an Extended Industry Standard Architecture (EISA) bus, etc. Buses can be categorized as address buses, data buses, control buses, etc. For ease of illustration, the buses shown in the accompanying drawings are not limited to a single bus or a single type of bus.

[0171] The aforementioned storage medium can be implemented from any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic storage, flash memory, magnetic disk, or optical disk. The storage medium can be any available medium accessible to general-purpose or special-purpose computers.

[0172] An exemplary storage medium is coupled to a processor, enabling the processor to read information from and write information to the storage medium. Alternatively, the storage medium can be an integral part of the processor. Both the processor and the storage medium can reside in an Application Specific Integrated Circuit (ASIC). Alternatively, the processor and storage medium can exist as discrete components in an electronic device or host device.

[0173] Those skilled in the art will understand that all or part of the steps of the above-described method embodiments can be implemented by hardware related to program instructions. The aforementioned program can be stored in a computer-readable storage medium. When executed, the program performs the steps of the above-described method embodiments; and the aforementioned storage medium includes various media capable of storing program code, such as ROM, RAM, magnetic disks, or optical disks.

[0174] This description is intended to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A file sharing method for multi-screen scenarios within a vehicle, characterized in that, Applications include sharing on the user end, including: In response to the user's permission authentication operation, determine the permission authentication between the user and the vehicle's infotainment system; In response to the file selection operation of the sharing user, the selected file is stored in the space to be shared, which is the space in the storage space of the sharing user's terminal used to store the file to be shared; The system selects a file to be shared in the shared file space and sends it to the vehicle-mounted terminal, so that the vehicle-mounted terminal stores the file to be shared in the shared file space and sends the file to the viewing user terminal that has established permission authentication with the vehicle-mounted terminal, wherein the permission authentication is determined based on the viewing user terminal's response to the viewing user's permission request operation; In response to the file sharing operation of the sharing user, the file to be shared is displayed and a file sharing instruction is generated; The file sharing instruction is sent to the vehicle's infotainment system so that the vehicle's infotainment system can synchronously display the file to be shared according to the file sharing instruction. The file sharing instruction is sent to the viewing user terminal with confirmed permissions, so that the viewing user terminal with confirmed permissions synchronously displays the file to be shared according to the file sharing instruction.

2. The method according to claim 1, characterized in that, The sharing user terminal, the vehicle terminal, and the viewing user terminal are all equipped with near-field communication (NFC) modules. Accordingly, in response to the user's permission authentication operation, the permission authentication between the user and the vehicle's infotainment system is determined, including: In response to the user's permission authentication operation, the NFC module is used to determine the permission authentication with the vehicle's infotainment system. The step of selecting a file to be shared in the shared space and sending it to the vehicle-mounted device, so that the vehicle-mounted device stores the file to be shared in the shared file space and sends the file to the viewing user terminal that has been authenticated with the vehicle-mounted device, includes: The system selects a file to be shared in the shared space and sends it to the vehicle-mounted device, so that the vehicle-mounted device stores the file to be shared in the shared file space and sends the file to the viewing user terminal that has been authenticated with the vehicle-mounted device. The authentication is based on the viewing user terminal responding to the viewing user's permission request operation through the NFC module.

3. The method according to claim 1 or 2, characterized in that, After sending the file sharing instruction to the authorized viewing user terminal, so that the authorized viewing user terminal synchronously displays the file to be shared according to the file sharing instruction, the method further includes: In response to the deletion operation by the sharing user, a deletion command is generated; The deletion command is sent to the vehicle's infotainment system, so that the vehicle's infotainment system deletes the file to be shared according to the deletion command. The deletion command is sent to the viewing user terminal with confirmed permissions, so that the viewing user terminal with confirmed permissions deletes the file to be shared according to the deletion command.

4. A file sharing method for multi-screen scenarios within a vehicle, characterized in that, Applications in in-vehicle infotainment systems include: Determine the permission authentication between the sharing user terminal and the sharing user terminal, wherein the permission authentication is determined by the sharing user terminal in response to the sharing user's permission authentication operation; Receive the file to be shared from the sharing user terminal in the sharing space, and store the file to be shared in the shared file space, wherein the file to be shared is the file selected and stored in the sharing space by the sharing user terminal in response to the file selection operation of the sharing user, and the sharing space is the space in the storage space of the sharing user terminal used to store the file to be shared. The file to be shared in the shared file space is sent to the viewing user terminal with verified permissions, wherein the permission verification is determined based on the viewing user terminal's response to the viewing user's permission request operation; The system receives a file sharing instruction sent by the sharing user terminal and displays the file to be shared synchronously according to the file sharing instruction, wherein the file sharing instruction is generated by the sharing user terminal in response to the file sharing operation of the sharing user and when displaying the file to be shared.

5. The method according to claim 4, characterized in that, The sharing user terminal, the vehicle terminal, and the viewing user terminal are all equipped with near-field communication (NFC) modules. Accordingly, the determination of permission authentication with the sharing user terminal, wherein the permission authentication is determined by the sharing user terminal in response to the sharing user's permission authentication operation, includes: Determine the authorization authentication between the sharing user terminal and the sharing user terminal, wherein the authorization authentication is determined by the sharing user terminal in response to the authorization authentication operation of the sharing user through the NFC module; The step of sending the file to be shared to a viewing user terminal with verified permissions, wherein the permission verification is determined based on the viewing user terminal's response to the viewing user's permission request operation, includes: The file to be shared is sent to the viewing user's terminal with verified permissions, wherein the permission verification is determined based on the viewing user's terminal responding to the viewing user's permission request operation via the NFC module.

6. The method according to claim 4 or 5, characterized in that, After synchronously displaying the file to be shared according to the file sharing instruction, the method further includes: The system receives a deletion command sent by the sharing user client and deletes the file to be shared according to the deletion command, wherein the deletion command is generated by the sharing user client in response to the deletion operation of the sharing user.

7. A file sharing method for a multi-screen in-vehicle scenario, characterized in that, Applied to the viewing user end, the method includes: In response to a user's permission request, the system confirms the permission authentication with the vehicle's infotainment system. The system receives a file to be shared from the vehicle's infotainment system. The file to be shared is a file that the sharing user selects and saves to the sharing space in response to the sharing user's file selection operation. The sharing space is the space in the sharing user's storage space used to store the file to be shared. The system receives a file sharing instruction sent by the sharing user terminal and displays the file to be shared synchronously according to the file sharing instruction, wherein the file sharing instruction is generated by the sharing user terminal in response to the file sharing operation of the sharing user and when displaying the file to be shared.

8. The method according to claim 7, characterized in that, The sharing user terminal, the vehicle terminal, and the viewing user terminal are all equipped with near-field communication (NFC) modules. Accordingly, the process of determining permission authentication with the vehicle-mounted system in response to a user's permission request includes: In response to a user's permission request, the system uses the NFC module to verify the permission between the user and the vehicle's infotainment system.

9. The method according to claim 7, characterized in that, After synchronously displaying the file to be shared according to the file sharing instruction, the method further includes: The system receives a deletion command sent by the sharing user client and deletes the file to be shared according to the deletion command, wherein the deletion command is generated by the sharing user client in response to the deletion operation of the sharing user.

10. A file sharing device for multi-screen scenarios in a vehicle, characterized in that, Applications include sharing on the user end, including: The first permission management module is used to respond to the permission authentication operation of the sharing user and determine the permission authentication between the vehicle terminal; The first file storage and transmission module is used to respond to the file selection operation of the sharing user, select a file and store it in the space to be shared, wherein the space to be shared is the space in the storage space of the sharing user's terminal used to store the file to be shared; The file storage and transmission module is further configured to select a file to be shared in the shared space and send it to the vehicle terminal, so that the vehicle terminal stores the file to be shared in the shared file space and sends the file to be shared to the viewing user terminal that has determined the permission authentication with the vehicle terminal, wherein the permission authentication is determined based on the viewing user terminal's response to the viewing user's permission request operation; The first multi-screen synchronization module is used to respond to the file sharing operation of the sharing user, display the file to be shared and generate a file sharing instruction; The first multi-screen synchronization module is used to send the file sharing instruction to the vehicle terminal, so that the vehicle terminal can synchronously display the file to be shared according to the file sharing instruction; The first multi-screen synchronization module is further configured to send the file sharing instruction to the viewing user terminal with confirmed permissions, so that the viewing user terminal with confirmed permissions synchronously displays the file to be shared according to the file sharing instruction.

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