Projection screen connection method and device, electronic equipment and storage medium

Abstract

The embodiment of the invention discloses a projection screen connection method and device, electronic equipment and a storage medium. The terminal equipment receives projection screen connection information broadcasted by the interactive panel in at least one wireless communication mode; obtaining screening reference information based on the screen projection connection information; screening the interactive panels according to the screening reference information, and confirming a target interactive panel to be connected; and according to the projection screen connection information corresponding to the target interaction panel, establishing projection screen connection with the target interaction panel. The screen projection connection information broadcasted by the interactive panel is received through various wireless communication modes, the received screen projection connection information is screened according to various screening reference information and preset screening conditions, and the target interactive panel is directly judged to be connected. The screen projection connection information received based on various wireless communication modes can be screened based on various dimensions, and convenient and accurate screen projection connection can be realized as much as possible on various devices in a universal mode under the condition that user operations are reduced as much as possible.

Description

Technical Field

[0001] Embodiments of the present invention relate to the field of communication technology, and in particular to a screen projection connection method, device, electronic device and storage medium. Background Art

[0002] With the continuous development and popularization of information technology, various types of electronic devices continue to emerge, and the connection methods between electronic devices are also rich and varied. For example, in a conference room built based on information technology, there are usually a variety of electronic devices such as interactive tablets, microphones, speakers, mice, keyboards, etc. The interactive tablet is the core of the various electronic devices, and other electronic devices are connected to each other as peripheral devices to achieve information collection, transmission and presentation during the meeting communication process.

[0003] When using an interactive tablet to present information, the information source is most likely not the interactive tablet, but other terminal devices. That is, the other terminal devices establish a connection with the interactive tablet and provide the information to be presented as an information source. After the information to be presented is sent to the interactive tablet, it is presented by the interactive tablet. Because the presented information is mainly screen information that is synchronously displayed in the form of screen projection, the connection established between the terminal device and the interactive tablet is defined as a screen projection connection.

[0004] When the inventor used various existing solutions to establish a screen projection connection between a terminal device and an interactive tablet, he found that establishing a screen projection connection requires the terminal device to obtain the screen projection connection information of the interactive tablet. The terminal device obtains the screen projection connection information mainly through point-to-point communication through software and / or hardware, and the user manually inputs the screen projection connection information presented by the interactive tablet. Point-to-point communication through software and / or hardware can only be achieved by some terminal devices, and the user manually inputs the screen projection connection information presented by the interactive tablet. The operation is cumbersome and prone to errors. The existing screen projection connection method cannot achieve convenient and accurate screen projection connection in a universal way on various devices. Summary of the invention

[0005] The present invention provides a screen projection connection method, device, electronic device and storage medium to solve the technical problem that the existing screen projection connection method cannot achieve convenient and accurate screen projection connection in a universal manner on various devices.

[0006] In a first aspect, an embodiment of the present invention provides a screen projection connection method, the screen projection connection method comprising:

[0007] Receiving screen projection connection information broadcast by the interactive tablet through at least one wireless communication method;

[0008] Obtaining screening reference information based on screen projection connection information;

[0009] The interactive tablets are screened according to the screening reference information, and the target interactive tablet to be connected is confirmed;

[0010] Establish a screen projection connection with the target interactive tablet according to the screen projection connection information corresponding to the target interactive tablet.

[0011] In the above, the terminal device receives the screen projection connection information broadcast by the interactive tablet through at least one wireless communication method; obtains filtering reference information based on the screen projection connection information; filters the interactive tablet according to the filtering reference information, and confirms the target interactive tablet to be connected; and establishes a screen projection connection with the target interactive tablet according to the screen projection connection information corresponding to the target interactive tablet. The screen projection connection information broadcast by the interactive tablet is received through various wireless communication methods, and the received screen projection connection information is filtered according to various filtering reference information and preset filtering conditions, and the target interactive tablet is directly determined to connect. The screen projection connection information received based on various wireless communication methods can be filtered based on various dimensions. While minimizing user operations as much as possible, convenient and accurate screen projection connections can be achieved as much as possible in a universal manner on various devices.

[0012] The screen projection connection information includes the screen projection code;

[0013] Accordingly, the filtering reference information is obtained based on the screen projection connection information, including:

[0014] Get the screen casting code from the screen casting connection information as the reference information for screening;

[0015] Accordingly, the interactive tablet is screened according to the screening reference information to confirm the target interactive tablet to be connected, including:

[0016] Display all the projection codes and projection code input windows extracted from the projection connection information;

[0017] Receive screen projection code characters through the screen projection code input window;

[0018] In the process of receiving the screen projection code characters, screen projection codes matching the screen projection code characters are selected and highlighted;

[0019] When a confirmation operation is received for any target projection code among the displayed projection codes, the interactive tablet corresponding to the target projection code is confirmed as the target interactive tablet.

[0020] As described above, based on the acquired projection code, in the process of the user entering the projection code characters based on the projection code displayed on the interactive tablet, the projection codes matching the acquired projection code characters can be quickly filtered out and highlighted. Based on the display and highlighting of the projection code, the user can quickly confirm the target interactive tablet to be connected.

[0021] Wherein, the wireless communication method includes ultrasonic communication;

[0022] Accordingly, the filtering reference information is obtained based on the screen projection connection information, including:

[0023] Obtain the wireless communication method corresponding to the screen projection connection information as screening reference information;

[0024] Accordingly, the interactive tablet is screened according to the screening reference information to confirm the target interactive tablet to be connected, including:

[0025] When ultrasonic communication exists in the screening reference information, a target interactive tablet is confirmed among interactive tablets corresponding to ultrasonic communication.

[0026] As described above, based on the propagation characteristic that ultrasonic signals have a weak ability to penetrate walls, when there is a projection code received through ultrasonic communication, it can be quickly confirmed that the projection code is the projection code of the target interactive tablet.

[0027] Wherein, when ultrasonic communication exists in the screening reference information, confirming the target interactive tablet in the interactive tablet corresponding to the ultrasonic communication includes:

[0028] In the case that there is an ultrasonic communication in the screening reference information, the interactive tablet corresponding to the ultrasonic communication is identified as the target interactive tablet;

[0029] In the case that there are multiple ultrasonic communications in the screening reference information, device information of the interactive tablets corresponding to the multiple ultrasonic communications is displayed, and the target interactive tablet is confirmed according to the user operation.

[0030] As described above, when there are multiple interactive tablets in the same space, for multiple screen projection codes received through ultrasonic communication, the target interactive tablet can be quickly confirmed by manual selection.

[0031] Among them, the screen projection connection information includes the device identification;

[0032] Accordingly, the filtering reference information is obtained based on the screen projection connection information, including:

[0033] When the projection connection information is obtained, the conference reservation information is obtained, and the device identifier is extracted from the projection connection information, and the conference reservation information and the device identifier are used as screening reference information; the conference reservation information includes reservation time information and reservation space information;

[0034] Accordingly, the interactive tablet is screened according to the screening reference information to confirm the target interactive tablet to be connected, including:

[0035] When the system time and the reservation time information are adapted, the device identifier in the screening reference information is matched with the reservation space information;

[0036] When the target device identifier in the screening reference information matches the reserved space information, the interactive tablet corresponding to the target device identifier is used as the target interactive tablet.

[0037] As described above, when an interactive tablet matching the reserved conference room is detected at the conference reservation time, the interactive tablet matching the conference room can be quickly confirmed as the target interactive tablet.

[0038] Among them, according to the projection connection information corresponding to the target interactive tablet, establishing a projection connection with the target interactive tablet includes:

[0039] Send a screen projection connection request to the target interactive tablet and display a verification code input window;

[0040] The verification code characters are received through the verification code input window, and when the verification code characters are consistent with the verification code displayed on the target interactive tablet, a screen projection connection is established with the target interactive tablet based on the screen projection connection information. The verification code is displayed after the target interactive tablet receives the screen projection connection request.

[0041] The above-mentioned verification during the process of establishing the screen projection connection can improve the security of the connection between devices and avoid information leakage caused by incorrect operation of the screen projection.

[0042] Among them, after establishing a screen projection connection with the target interactive tablet according to the screen projection connection information corresponding to the target interactive tablet, it also includes:

[0043] When the type of the currently connected network is inconsistent with the preset target network type, the currently connected network is switched according to the preset switching rule.

[0044] As described above, network switching according to preset switching rules and the type of network currently connected can put the network connection in the optimal state and improve the data transmission speed and stability during the screen projection process.

[0045] The filtering reference information is obtained based on the screen projection connection information, including:

[0046] The screen projection connection information is decrypted based on a preset encryption algorithm, and the screening reference information is obtained from the decrypted screen projection connection information.

[0047] As mentioned above, for the encrypted broadcast screen projection connection information, decryption and subsequent processing can effectively reduce malicious connections and malicious screen projection that may be caused by plain text transmission.

[0048] In a second aspect, an embodiment of the present invention provides a screen projection connection device, the screen projection connection device comprising:

[0049] An information receiving unit, configured to receive screen projection connection information broadcast by an interactive tablet via at least one wireless communication method;

[0050] An information acquisition unit, used to acquire screening reference information based on the screen projection connection information;

[0051] A target screening unit, used to screen the interactive tablets according to the screening reference information and confirm the target interactive tablet to be connected;

[0052] The connection establishing unit is used to establish a screen projection connection with the target interactive tablet according to the screen projection connection information corresponding to the target interactive tablet.

[0053] In the above, the collaborative operation of each unit receives the screen projection connection information broadcast by the interactive tablet through various wireless communication methods, and filters the received screen projection connection information according to various filtering reference information and preset filtering conditions, and directly determines the target interactive tablet for connection. The screen projection connection information received based on various wireless communication methods can be filtered based on various dimensions. While minimizing user operations as much as possible, convenient and accurate screen projection connections can be achieved in a universal manner on various devices.

[0054] The screen projection connection information includes the screen projection code;

[0055] Accordingly, the information acquisition unit includes:

[0056] A first acquisition module is used to obtain a screen projection code from the screen projection connection information as screening reference information;

[0057] Accordingly, the target screening unit includes:

[0058] An information display module is used to display all screen projection codes and screen projection code input windows extracted from the screen projection connection information;

[0059] A character receiving module, used for receiving screen projection code characters through the screen projection code input window;

[0060] A matching display module is used to filter and highlight the screen projection code that matches the screen projection code character during the process of receiving the screen projection code character;

[0061] The first confirmation module is used to confirm the interactive tablet corresponding to the target screen projection code as the target interactive tablet when receiving a confirmation operation acting on any target screen projection code among the displayed screen projection codes.

[0062] As described above, based on the acquired projection code, in the process of the user entering the projection code characters based on the projection code displayed on the interactive tablet, the projection codes matching the acquired projection code characters can be quickly filtered out and highlighted. Based on the display and highlighting of the projection code, the user can quickly confirm the target interactive tablet to be connected.

[0063] Based on the above embodiment, the wireless communication method includes ultrasonic communication;

[0064] The information acquisition unit includes:

[0065] The second acquisition module is used to obtain the wireless communication method corresponding to the screen projection connection information as screening reference information;

[0066] Accordingly, the target screening unit includes:

[0067] The second confirmation module is used to confirm the target interactive tablet among the interactive tablets corresponding to the ultrasonic communication when there is ultrasonic communication in the screening reference information.

[0068] As described above, based on the propagation characteristic that ultrasonic signals have a weak ability to penetrate walls, when there is a projection code received through ultrasonic communication, it can be quickly confirmed that the projection code is the projection code of the target interactive tablet.

[0069] Wherein, the second confirmation module includes:

[0070] A first confirmation submodule is used to confirm the interactive tablet corresponding to the ultrasonic communication as a target interactive tablet when there is an ultrasonic communication in the screening reference information;

[0071] The second confirmation submodule is used to display device information of interactive tablets corresponding to multiple ultrasonic communications when there are multiple ultrasonic communications in the screening reference information, and confirm the target interactive tablet according to the user operation.

[0072] As described above, when there are multiple interactive tablets in the same space, for multiple screen projection codes received through ultrasonic communication, the target interactive tablet can be quickly confirmed by manual selection.

[0073] Among them, the screen projection connection information includes the device identification;

[0074] Accordingly, the information acquisition unit includes:

[0075] The reservation information acquisition module is used to obtain the conference reservation information when the projection connection information is obtained, and extract the device identification from the projection connection information, and use the conference reservation information and the device identification as screening reference information; the conference reservation information includes the reservation time information and the reservation space information;

[0076] Accordingly, the target screening unit includes:

[0077] An information matching module, used to match the device identification in the screening reference information with the reservation space information when the system time and the reservation time information are adapted;

[0078] The third confirmation module is used to use the interactive tablet corresponding to the target device identifier as the target interactive tablet when the target device identifier in the screening reference information matches the reserved space information.

[0079] As described above, when an interactive tablet matching the reserved conference room is detected at the conference reservation time, the interactive tablet matching the conference room can be quickly confirmed as the target interactive tablet.

[0080] The connection establishment unit includes:

[0081] A verification display module is used to send a screen projection connection request to the target interactive tablet and display a verification code input window;

[0082] The verification connection module is used to receive verification code characters through the verification code input window, and to establish a screen projection connection with the target interactive tablet based on the screen projection connection information when the verification code characters are consistent with the verification code displayed by the target interactive tablet. The verification code is displayed after the target interactive tablet receives the screen projection connection request.

[0083] The above-mentioned verification during the process of establishing the screen projection connection can improve the security of the connection between devices and avoid information leakage caused by incorrect operation of the screen projection.

[0084] The screen projection connection device further includes:

[0085] The network switching unit is used to switch the currently connected network according to a preset switching rule when the currently connected network type is inconsistent with the preset target network type.

[0086] As described above, network switching according to preset switching rules and the type of network currently connected can put the network connection in the optimal state and improve the data transmission speed and stability during the screen projection process.

[0087] The information acquisition unit includes:

[0088] The decryption acquisition module is used to decrypt the screen projection connection information based on a preset encryption algorithm and obtain the screening reference information from the decrypted screen projection connection information.

[0089] As mentioned above, for the encrypted broadcast screen projection connection information, decryption and subsequent processing can effectively reduce malicious connections and malicious screen projection that may be caused by plain text transmission.

[0090] In a third aspect, an embodiment of the present invention provides an electronic device, the electronic device comprising:

[0091] one or more processors;

[0092] a memory for storing one or more computer programs;

[0093] When one or more computer programs are executed by one or more processors, the electronic device implements the screen projection connection method as in the first aspect.

[0094] In a fourth aspect, an embodiment of the present invention provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the screen projection connection method as in the first aspect.

[0095] The electronic devices and computers of the third and fourth aspects can be used to execute the screen projection connection method provided by any of the above embodiments, and have corresponding functions and beneficial effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0096] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0097] Figure 1 A method flow chart of a screen projection connection method provided in an embodiment of the present application;

[0098] Figure 2 A schematic diagram of an application scenario of a screen projection connection method exemplarily provided in an embodiment of the present application;

[0099] Figure 3 A schematic diagram of an interface when a screen projection code and a screen projection code input window are displayed, which is exemplarily provided in an embodiment of the present application;

[0100] Figure 4 A schematic diagram of an interface when a screen projection code is highlighted, which is exemplarily provided in an embodiment of the present application;

[0101] Figure 5 A schematic diagram of the structure of the screen projection connection device provided in an embodiment of the present application;

[0102] Figure 6 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0103] In order to make the purpose, technical scheme and advantages of the present application clearer, the embodiments of the present application will be further described in detail below in conjunction with the accompanying drawings. It is understood that the specific embodiments described herein are used to explain the present invention, rather than to limit the present invention. It should also be noted that, for the sake of ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0104] It should be noted that due to space limitations, this application description does not list all optional implementation methods. After reading this application description, those skilled in the art should be able to understand that as long as the technical features do not contradict each other, any combination of technical features can constitute an optional implementation method.

[0105] Each embodiment is described in detail below.

[0106] Interactive tablets are electronic devices designed and developed for multi-person communication scenarios, and are often used in multi-person communication scenarios such as meetings, teaching, and presentations. In multi-person communication scenarios, interactive tablets can not only process data by themselves to present information, but can also connect to other terminal devices, which process data and present information on the interactive tablet. Common presentations include screen presentations. The connection established when the interactive tablet and the terminal device cooperate to present information is defined as a screen projection connection.

[0107] In the existing process of establishing a projection connection, the terminal device needs to obtain the projection connection information of the interactive tablet. The terminal device obtains the projection connection information mainly through point-to-point communication of software and / or hardware, and the user manually inputs the projection connection information presented by the interactive tablet. Obtained through point-to-point communication of software and / or hardware, for example, the projection connection information is displayed in the form of a QR code on the interactive tablet, and the terminal device obtains it by scanning the QR code through a camera. For example, the interactive tablet is configured with an NFC (Near Field Communication) tag that records the projection connection information, and the terminal device is configured with an NFC card reader. The two use the NFC tag to accurately transmit the projection connection information point-to-point. It can be found that point-to-point communication acquisition can only be achieved by some terminal devices. For example, when the terminal device is a laptop, it is difficult to obtain the projection connection information by scanning the QR code. Not all interactive tablets are configured as NFC tags and not all terminal devices are configured with NFC readers. The user's manual input operation according to the projection connection information presented by the interactive tablet is cumbersome and error-prone. For example, at least 6 irregular alphanumeric characters need to be accurately entered. Overall, the existing screen projection connection methods cannot achieve convenient and accurate screen projection connection in a universal manner on various devices.

[0108] To solve the above technical problems, an embodiment of the present application proposes a screen projection connection method, which receives screen projection connection information broadcast by an interactive tablet through various wireless communication methods, and filters the received screen projection connection information according to various filtering reference information and preset filtering conditions to directly determine the target interactive tablet for connection. The screen projection connection information received based on various wireless communication methods can be filtered based on various dimensions. While minimizing user operations as much as possible, convenient and accurate screen projection connections can be achieved as much as possible in a universal manner on various devices.

[0109] The interactive tablet used in this solution can be an integrated device that uses touch technology to control the content displayed on the display screen and realize human-computer interaction operations. It integrates one or more functions such as a projector, an electronic whiteboard, a screen, a sound system, a television, and a video conferencing terminal. Of course, the interactive tablet does not include a limitation on the surface characteristics of the display surface. For example, the surface characteristics of the interactive tablet can be a plane, a curved surface, or a combination of multiple planes.

[0110] Typically, the interactive tablet is installed with at least one operating system, wherein the operating system includes but is not limited to Android system, Linux system, Windows system and Huawei Hongmeng system, which is used to control and coordinate the interactive tablet and peripheral devices, so that various independent hardware in the interactive tablet can work in coordination as a stable whole. The interactive tablet includes at least one display screen, for example, the interactive tablet is configured with a display screen with a touch function, that is, a touch-sensitive display screen. The touch-sensitive display screen can be an infrared display screen, a capacitive display screen, a resistive display screen, an electromagnetic display screen or a pressure-sensitive display screen, etc. On the display screen with a touch function, the user can touch the display screen by touching the finger or a writing pen to achieve touch operation, and accordingly, the interactive tablet detects the touch position and responds according to the touch position to achieve the touch function. When the touch sensing module used on the display screen with a touch function is different, the original touch signal collected by the touch sensing module is different, and the converted touch signal is not exactly the same. In the interactive tablet, in order to realize the quick operation of commonly used functions without exiting the current page, a sidebar is usually set on both sides of the display screen, and multiple function controls are displayed in the sidebar, such as a camera control for starting the camera, a writing control for quickly starting writing, etc.

[0111] For an infrared display screen, the touch sensing module is an infrared touch frame, and the touch signal collected by it may include a signal indicating that the infrared rays are blocked, and the converted touch signal may include a position touch signal, and the position touch signal may include the X coordinate and Y coordinate of the touch position. For a capacitive display screen, the touch sensing module is a capacitive touch panel, and the touch signal collected by it may include the current flowing through each electrode of the touch screen, and the converted touch signal may include a position touch signal, and the position touch signal may include the X coordinate and Y coordinate of the touch position. For a resistive display screen, the touch sensing module is a resistive touch panel, and the touch signal collected by it may include the voltage of the touch position, and the converted touch signal may include a position touch signal, and the position touch signal may include the X coordinate and Y coordinate of the touch position. For an electromagnetic display screen, the touch sensing module is an electromagnetic panel, and the touch signal collected by it may include the change in magnetic flux and the frequency of the received electromagnetic signal, and the converted touch signal may include a position touch signal corresponding to the change in magnetic flux and a pressure signal corresponding to the frequency, and the position touch signal may include the X coordinate and Y coordinate of the touch position; the pressure signal may include a pressure value. For a pressure-sensitive display screen, the touch sensing module is a pressure sensor, and the touch signal collected by the touch sensing module may include a pressure signal. The converted touch signal may include a position touch signal, and the position touch signal may include an X coordinate and a Y coordinate of the touch position.

[0112] The interactive tablet described in the embodiments of the present application may also be referred to as an all-in-one device, a smart tablet, a conference tablet, a conference board, etc. It should be understood that electronic devices used in multi-person communication scenarios to support functions such as information, presentation, recording, and sharing during multi-person communication are all within the scope of the interactive tablet.

[0113] Figure 1 is a method flow chart of a screen projection connection method provided in an embodiment of the present application, such as Figure 1 As shown, the screen projection connection method includes but is not limited to step S110-step S140. The screen projection connection method is described from the perspective of the terminal device. For a clearer description, the corresponding implementation process of the interactive tablet will be described.

[0114] Step S110: Receive screen projection connection information broadcast by the interactive tablet through at least one wireless communication method.

[0115] Based on the screen projection connection method of the embodiment of the present application, after the interactive tablet is turned on, in order to ensure the success rate and compatibility with various types of terminal devices, it will broadcast its own screen projection connection information through all feasible wireless communication methods such as Bluetooth, Wi-Fi Direct, Wi-Fi Beacon, ultrasonic communication, etc., which may specifically include network connection information (network IP, port, hotspot information, etc.) and device identification information (Mac address, device name, supported discovery capabilities, etc.), connection capabilities (support discovery capabilities, supported connection capabilities), etc. The screen projection connection information is the information required for the terminal device to establish a screen projection connection with the interactive tablet, which specifically includes information directly used for connection, and also includes auxiliary connection information used to discover the interactive tablet and confirm the network status.

[0116] The screen projection connection information of the interactive tablet broadcast is as follows:

[0117] {

[0118] LAN IP: 172.20.11.1

[0119] Screen projection network port: 12345

[0120] Hotspot SSID: WB01-5G

[0121] Hotspot password: 12345678

[0122] Device name: WB01

[0123] Mac Address:

[0124] Supported discovery capabilities: Ultrasonic, BLE, Wi-Fi Direct

[0125] Supported connection methods: LAN connection, large screen dedicated hotspot connection, public network connection ......

[0127] }

[0128] In the specific broadcasting process, in order to ensure the security of data transmission, the interactive tablet can be encrypted using encryption algorithms such as AES (Advanced Encryption Standard) and CHACHA20 before being sent out.

[0129] Step S120: Obtain filtering reference information based on the screen projection connection information.

[0130] The screening reference information is information in the screen projection connection information that can be used by the terminal device to determine whether it has the only connection possibility or a high connection possibility. It is usually directly carried in the screen projection connection information or in pre-stored associated information that can be directly confirmed based on the screen projection connection information. It also includes user operations obtained on the basis of the display of the screen projection connection information to assist in determining the target interactive tablet. In the specific implementation process, after the terminal device as the screen projection sender receives the screen projection connection information broadcast in an encrypted form, it will first decrypt it and then parse out the network connection information and device identification information of the corresponding receiving end. That is, for the encrypted screen projection connection information, the screen projection connection information is decrypted based on a preset encryption algorithm, and the screening reference information is obtained from the decrypted screen projection connection information, which can improve the security of the screen projection connection and effectively reduce malicious connections and malicious screen projections that may be caused by plain text transmission.

[0131] Step S130: Screen the interactive tablets according to the screening reference information, and confirm the target interactive tablet to be connected.

[0132] In an embodiment of the present application, the terminal device can directly filter the reference information, that is, based on the information carried in the projection connection information, and can further combine simple user operations to confirm, in the form of independent judgment or combined judgment, an interactive tablet with the greatest connection possibility among the interactive tablets that can be detected in the environment as the target interactive tablet to be connected, and can establish a projection connection based on the corresponding projection connection information.

[0133] Step S140: Establish a screen projection connection with the target interactive tablet according to the screen projection connection information corresponding to the target interactive tablet.

[0134] The process of establishing a projection connection between the terminal device and the target interactive tablet based on the projection connection information can refer to the process of establishing a projection connection with the corresponding interactive tablet according to the determined projection connection information in the related art. In the embodiment of the present application, considering that there is basically no user participation in the confirmation of the target interactive tablet, in order to ensure the accuracy of the connection and avoid information leakage caused by erroneous connection and projection, in the process of realizing the projection connection, a projection connection request can be sent to the target interactive tablet first, and a verification code input window can be displayed; for the interactive tablet, after receiving the projection connection request, a verification code is randomly generated and displayed, the verification code has a small number of digits and is pure digits, and the role of the verification code can only be seen by users in the same space as the target interactive tablet and input operations on the terminal device, which can ensure that users who really have the projection conditions and projection needs operate on the terminal device, and the terminal device receives the verification code characters through the verification code input window, so that when the verification code characters are consistent with the verification code displayed by the target interactive tablet, a projection connection is established with the target interactive tablet based on the projection connection information, and the verification code is displayed by the target interactive tablet after receiving the projection connection request.

[0135] For terminal devices and interactive tablets, when the projection connection information is known, projection can be established through various types of network connections, but the projection stability and speed of different types of network connections are different. When the network type of the current connection is inconsistent with the preset target network type, the currently connected network is switched according to the preset switching rules. For example, after the initial connection is established, the connectivity and QOS network quality of the LAN are determined through network detection. If the connectivity and QOS network quality are normal, the connection is directly made through the LAN. If the connectivity is abnormal or the QOS quality is lower than the threshold (for example: the RTT round-trip delay is greater than 2 seconds), the "large screen dedicated hotspot connection" method with a slightly lower priority will be selected. Similarly, if the device does not support this connection method, or the "large screen dedicated hotspot connection" is abnormal, the "public network connection" method with a lower priority will be selected. To ensure the connection success rate and avoid the situation where the user fails to cast the screen due to network abnormalities and other factors.

[0136] The following combination Figure 2 The interactive tablet 10 and the terminal device 20 shown in the figure provide a detailed description of the process of specifically confirming the target interactive tablet.

[0137] In a specific embodiment, the screen projection connection information includes a screen projection code, which is obtained by processing the IP address using a screen projection code generation algorithm. The screen transmission code corresponds to the IP address one by one, and the terminal device can be directly connected to the interactive tablet through the screen projection code. Considering that the IP address assigned to the screen transmission receiving end is different each time, the screen transmission code corresponding to the same screen transmission receiving end also changes with the change of the IP address. Based on the screen projection connection information, the screening reference information can be obtained from the screen projection connection information as the screening reference information; after obtaining the screen projection code, the interactive tablet is screened according to the screening reference information, and in the process of confirming the target interactive tablet to be connected, all the screen projection codes and screen projection code input windows extracted from the screen projection connection information are first displayed; then the screen projection code characters are received through the screen projection code input window; in the process of receiving the screen projection code characters, the screen projection codes matching the screen projection code characters are screened and highlighted; finally, when a confirmation operation is received for any target screen projection code in the displayed screen projection code, the interactive tablet corresponding to the target screen projection code is confirmed as the target interactive tablet.

[0138] For details, please refer to Figure 3, when receiving the projection connection information of multiple interactive tablets 10, the device icon 22 corresponding to each interactive tablet 10 can be displayed on the terminal device 20 accordingly. The elements displayed by the device icon 22 include the projection code and the device identification. The projection code can be displayed as soon as it is received, and it is impossible to independently confirm whether the corresponding interactive tablet 10 is the target interactive tablet. Therefore, in the embodiment of the present application, a projection code input window 21 is further displayed, and the projection code characters are received through the projection code input window 21. The projection code input window 21 is a text input control for inputting the projection code characters that constitute the projection code. For the user, the projection code characters can only be entered one by one. Therefore, during the input process, the projection codes that match the already entered projection code characters are filtered and highlighted. The specific highlighting can be the difference in fonts, the grayscale difference of the device icon 22, etc. Figure 4 As shown, the screen casting code characters input in the screen casting code input window 21 are "EC", 3 of the 4 screen casting codes are inconsistent, and only the first two screen casting code characters of the third screen casting code match, and the third screen casting code is highlighted at this time. If a confirmation operation acting on the third screen casting code is received at this time, the third screen casting code is the target screen casting code, and the interactive tablet corresponding to the third screen casting code is the target interactive tablet.

[0139] In the specific processing process, before receiving the confirmation operation acting on any target projection code in the displayed projection code, the projection code character is not necessarily received. That is, if the user can quickly confirm the corresponding device icon 22 on the terminal device 20 according to the projection code displayed on the interactive flat panel in the environment, the user can directly make a selection, and the terminal device 20 will receive the confirmation operation accordingly, corresponding to the confirmation of the target interactive flat panel.

[0140] In another specific embodiment, the wireless communication method includes ultrasonic communication, and the screening reference information is obtained based on the screen projection connection information. Specifically, the wireless communication method corresponding to the screen projection connection information is obtained as the screening reference information; when ultrasonic communication exists in the screening reference information, the target interactive tablet is confirmed in the interactive tablet corresponding to the ultrasonic communication. Ultrasonic communication specifically uses ultrasonic waves as the medium for data transmission. Ultrasonic waves have the characteristic of severe attenuation after passing through walls. When the terminal device receives the screen projection connection information with normal intensity broadcast by the interactive tablet in the ultrasonic communication method, it indicates that the terminal device is in the same space as the interactive tablet at this time, and the interactive tablet that can communicate through ultrasonic waves is very likely to be the target interactive tablet, thereby achieving rapid confirmation.

[0141] There may be different numbers of interactive tablets in spaces of different sizes. Therefore, when there is one ultrasonic communication in the screening reference information, the interactive tablet corresponding to the ultrasonic communication is confirmed as the target interactive tablet; when there are multiple ultrasonic communications in the screening reference information, the device information of the interactive tablets corresponding to the multiple ultrasonic communications is displayed, and the target interactive tablet is confirmed according to the user operation. When there are multiple interactive tablets in the same space, for multiple screen projection codes received through ultrasonic communication, the target interactive tablet can be quickly confirmed by manual selection. The specific user operation can be the operation of entering the screen projection code for secondary screening as described above, or it can be the operation of directly selecting.

[0142] In another specific embodiment, the screen projection connection information includes a device identification; filtering reference information is obtained based on the screen projection connection information, specifically, when the screen projection connection information is obtained, the meeting reservation information is obtained, and the device identification is extracted from the screen projection connection information, and the meeting reservation information and the device identification are used as filtering reference information; the meeting reservation information includes reservation time information and reservation space information; after obtaining the meeting reservation information, when the system time and the reservation time information are adapted, the device identification in the filtering reference information is matched with the reservation space information; when there is a match between the target device identification and the reservation space information in the filtering reference information, the interactive tablet corresponding to the target device identification is used as the target interactive tablet.

[0143] When organizing a multi-person communication activity, the time and venue are usually reserved in advance. In the embodiment of the present application, the time and venue of the reservation are defined as the reservation time information and the reservation space information, respectively. The reservation time information and the reservation space information are collectively referred to as the meeting reservation information. Before the meeting starts, the user carries the terminal device into the reserved space (such as a conference room). In some multi-person communication spaces, the device identifier of the interactive tablet arranged in the space corresponds to the space in which it is located, for example, the name of the interactive tablet is the same as the number of the conference room. If the terminal device detects an interactive tablet that matches the reserved conference room at the meeting reservation time, it can be confirmed that the terminal device enters the space on time, and the interactive tablet that matches the conference room can be quickly confirmed as the target interactive tablet. The system time is adapted to the reservation time information, which does not necessarily mean that the system time is within the time period corresponding to the reservation time information, but can be within a certain range (for example, within 10 minutes) before the time period corresponding to the reservation time information. In addition, the acquisition of the meeting reservation information is usually obtained from the conference reservation platform or conference software, that is, the corresponding application for screen projection needs to synchronize information with the conference reservation platform (or conference software), or the corresponding application for screen projection itself is a sub-function of the conference reservation platform (or conference software).

[0144] It should also be noted that in the above embodiments, confirming the target interactive tablet based on the projection code, device identification or wireless communication method is not a mutually exclusive solution, but the target interactive tablet can be confirmed in multiple dimensions according to priority. When the target interactive tablet is not confirmed in the first method, the target interactive tablet is confirmed in the second method. When the target interactive tablet is not confirmed in the second method, the target interactive tablet is confirmed in the third method. In the specific implementation process, considering that the wireless communication method and the device identification have obvious judgment precision, one of the first method and the second method is based on the wireless communication method, the other is based on the device identification, and the third method is based on the projection code.

[0145] In the above-mentioned screen projection connection method, the terminal device receives the screen projection connection information broadcast by the interactive tablet through at least one wireless communication method; obtains filtering reference information based on the screen projection connection information; filters the interactive tablet according to the filtering reference information, and confirms the target interactive tablet to be connected; and establishes a screen projection connection with the target interactive tablet according to the screen projection connection information corresponding to the target interactive tablet. The screen projection connection information broadcast by the interactive tablet is received through various wireless communication methods, and the received screen projection connection information is filtered according to various filtering reference information and preset filtering conditions to directly determine the target interactive tablet for connection. The screen projection connection information received based on various wireless communication methods can be filtered based on various dimensions. While minimizing user operations as much as possible, convenient and accurate screen projection connections can be achieved as much as possible in a universal manner on various devices.

[0146] Figure 5 This is a schematic diagram of the structure of a screen projection connection device provided in an embodiment of the present application. Figure 5 As shown, the screen projection connection device includes an information receiving unit 310, an information acquisition unit 320, a target screening unit 330 and a connection establishing unit 340.

[0147] Among them, the information receiving unit 310 is used to receive the screen projection connection information broadcast by the interactive tablet through at least one wireless communication method; the information acquisition unit 320 is used to obtain filtering reference information based on the screen projection connection information; the target filtering unit 330 is used to filter the interactive tablets according to the filtering reference information and confirm the target interactive tablet to be connected; the connection establishment unit 340 is used to establish a screen projection connection with the target interactive tablet according to the screen projection connection information corresponding to the target interactive tablet.

[0148] Based on the above embodiment, the screen projection connection information includes a screen projection code;

[0149] Accordingly, the information acquisition unit 320 includes:

[0150] A first acquisition module is used to obtain a screen projection code from the screen projection connection information as screening reference information;

[0151] Accordingly, the target screening unit 330 includes:

[0152] An information display module is used to display all screen projection codes and screen projection code input windows extracted from the screen projection connection information;

[0153] A character receiving module, used for receiving screen projection code characters through the screen projection code input window;

[0154] A matching display module is used to filter and highlight the screen projection code that matches the screen projection code character during the process of receiving the screen projection code character;

[0155] The first confirmation module is used to confirm the interactive tablet corresponding to the target screen projection code as the target interactive tablet when receiving a confirmation operation acting on any target screen projection code among the displayed screen projection codes.

[0156] Based on the above embodiment, the wireless communication method includes ultrasonic communication;

[0157] Accordingly, the information acquisition unit 320 includes:

[0158] The second acquisition module is used to obtain the wireless communication method corresponding to the screen projection connection information as screening reference information;

[0159] Accordingly, the target screening unit 330 includes:

[0160] The second confirmation module is used to confirm the target interactive tablet among the interactive tablets corresponding to the ultrasonic communication when there is ultrasonic communication in the screening reference information.

[0161] Based on the above embodiment, the second confirmation module includes:

[0162] A first confirmation submodule is used to confirm the interactive tablet corresponding to the ultrasonic communication as a target interactive tablet when there is an ultrasonic communication in the screening reference information;

[0163] The second confirmation submodule is used to display device information of interactive tablets corresponding to multiple ultrasonic communications when there are multiple ultrasonic communications in the screening reference information, and confirm the target interactive tablet according to the user operation.

[0164] Based on the above embodiment, the screen projection connection information includes a device identifier;

[0165] Accordingly, the information acquisition unit 320 includes:

[0166] The reservation information acquisition module is used to obtain the conference reservation information when the projection connection information is obtained, and extract the device identification from the projection connection information, and use the conference reservation information and the device identification as screening reference information; the conference reservation information includes the reservation time information and the reservation space information;

[0167] Accordingly, the target screening unit 330 includes:

[0168] An information matching module, used to match the device identification in the screening reference information with the reservation space information when the system time and the reservation time information are adapted;

[0169] The third confirmation module is used to use the interactive tablet corresponding to the target device identifier as the target interactive tablet when the target device identifier in the screening reference information matches the reserved space information.

[0170] Based on the above embodiment, the connection establishing unit 340 includes:

[0171] A verification display module is used to send a screen projection connection request to the target interactive tablet and display a verification code input window;

[0172] The verification connection module is used to receive verification code characters through the verification code input window, and to establish a screen projection connection with the target interactive tablet based on the screen projection connection information when the verification code characters are consistent with the verification code displayed by the target interactive tablet. The verification code is displayed after the target interactive tablet receives the screen projection connection request.

[0173] On the basis of the above embodiment, the screen projection connection device further includes:

[0174] The network switching unit is used to switch the currently connected network according to a preset switching rule when the currently connected network type is inconsistent with the preset target network type.

[0175] Based on the above embodiment, the information acquisition unit 320 includes:

[0176] The decryption acquisition module is used to decrypt the screen projection connection information based on a preset encryption algorithm and obtain the screening reference information from the decrypted screen projection connection information.

[0177] The screen projection connection device provided in the embodiment of the present application is included in the terminal device and can be used to execute the corresponding screen projection connection method provided in the above embodiment, and has corresponding functions and beneficial effects.

[0178] It is worth noting that in the embodiment of the above-mentioned screen projection connection device, the various units and modules included are only divided according to functional logic, but are not limited to the above-mentioned division, as long as the corresponding functions can be achieved; in addition, the specific names of the functional units are only for the convenience of distinguishing each other, and are not used to limit the scope of protection of the present invention.

[0179] Figure 6 This is a schematic diagram of the structure of an electronic device provided in an embodiment of the present application. Figure 6 As shown, the electronic device includes a processor 410 and a memory 420. The interactive tablet and the conference control device mentioned above are both electronic devices in terms of hardware architecture. In a common product form of an electronic device, an input device 430, an output device 440 and a communication device 450 may also be included. The number of processors 410 in the electronic device may be one or more. Figure 6 A processor 410 is taken as an example; the processor 410, the memory 420, the input device 430, the output device 440 and the communication device 450 in the electronic device can be connected via a bus or other means. Figure 6 The example of connecting through bus is taken in the following.

[0180] The memory 420, as a computer-readable storage medium, can be used to store software programs, computer executable programs and modules, such as program instructions / modules corresponding to the screen projection connection method in the embodiment of the present application. The processor 410 executes various functional applications and data processing of the electronic device by running the software programs, instructions and modules stored in the memory 420, that is, realizing the above-mentioned screen projection connection method.

[0181] The memory 420 may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application required for at least one function; the data storage area may store data created according to the use of the electronic device, etc. In addition, the memory 420 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one disk storage device, a flash memory device, or other non-volatile solid-state storage device. In some instances, the memory 420 may further include a memory remotely arranged relative to the processor 410, and these remote memories may be connected to the electronic device via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0182] The input device 430 may be used to receive network configuration information. The output device 440 may include a display device such as a display screen.

[0183] The above-mentioned electronic device can be used to execute any screen projection connection method and has corresponding functions and beneficial effects.

[0184] An embodiment of the present invention also provides a storage medium containing computer executable instructions. When the computer executable instructions are executed by a computer processor, they are used to perform relevant operations in the screen projection connection method provided in any embodiment of the present application, and have corresponding functions and beneficial effects.

[0185] Those skilled in the art should understand that the embodiments of the present application may be provided as methods, systems, or computer program products.

[0186] Therefore, the present application may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present application may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code. The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the functions in the process. Figure 1 A process or multiple processes and / or boxes Figure 1 These computer program instructions can also be stored in a computer-readable memory that can guide a computer or other programmable data processing device to work in a specific way, so that the instructions stored in the computer-readable memory produce a product including an instruction device, which implements the functions specified in the process. Figure 1 A process or multiple processes and / or boxes Figure 1 These computer program instructions can also be loaded onto a computer or other programmable data processing device, so that a series of operation steps are executed on the computer or other programmable device to produce a computer-implemented process, so that the instructions executed on the computer or other programmable device provide for implementing the process in the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0187] In a typical configuration, a computing device includes one or more processors (CPU), input / output interfaces, network interfaces, and memory. The memory may include non-permanent memory in a computer-readable medium, random access memory (RAM) and / or non-volatile memory in the form of read-only memory (ROM) or flash RAM. The memory is an example of a computer-readable medium.

[0188] Computer readable media include permanent and non-permanent, removable and non-removable media that can be used to store information by any method or technology. Information can be computer readable instructions, data structures, program modules or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technology, compact disk read-only memory (CD-ROM), digital versatile disk (DVD) or other optical storage, magnetic cassettes, magnetic disk storage or other magnetic storage devices or any other non-transmission media that can be used to store information that can be accessed by a computing device. As defined herein, computer readable media does not include temporary computer readable media (transitory media), such as modulated data signals and carrier waves.

[0189] It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, commodity or device. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the process, method, commodity or device including the elements.

[0190] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. Screen projection connection method, It is characterized in that include: Receiving screen projection connection information broadcast by the interactive tablet through at least one wireless communication method; Acquire screening reference information based on the screen projection connection information; Screening the interactive tablets according to the screening reference information to confirm a target interactive tablet to be connected; According to the projection connection information corresponding to the target interactive tablet, a projection connection is established with the target interactive tablet.

2. The screen projection connection method according to claim 1, It is characterized in that The screen projection connection information includes a screen projection code; Correspondingly, the obtaining of the screening reference information based on the screen projection connection information includes: Acquire a screen projection code from the screen projection connection information as screening reference information; Accordingly, screening the interactive tablet according to the screening reference information to confirm the target interactive tablet to be connected includes: Display all screen projection codes and screen projection code input windows extracted from the screen projection connection information; Receiving screen projection code characters through the screen projection code input window; In the process of receiving the screen projection code character, screening the screen projection code matching the screen projection code character and highlighting it; When a confirmation operation is received for any target screen projection code among the displayed screen projection codes, the interactive tablet corresponding to the target screen projection code is confirmed as the target interactive tablet.

3. The screen projection connection method according to claim 1, It is characterized in that The wireless communication method includes ultrasonic communication; Correspondingly, the obtaining of the screening reference information based on the screen projection connection information includes: Obtaining a wireless communication method corresponding to the screen projection connection information as screening reference information; Accordingly, screening the interactive tablet according to the screening reference information to confirm the target interactive tablet to be connected includes: In a case where ultrasonic communication exists in the screening reference information, a target interactive tablet is confirmed among the interactive tablets corresponding to the ultrasonic communication.

4. The screen projection connection method according to claim 3, It is characterized in that In the case where ultrasonic communication exists in the screening reference information, confirming a target interactive tablet among the interactive tablets corresponding to the ultrasonic communication includes: In the case that there is an ultrasonic communication in the screening reference information, the interactive tablet corresponding to the ultrasonic communication is identified as a target interactive tablet; In the case that there are multiple ultrasonic communications in the screening reference information, device information of the interactive tablets corresponding to the multiple ultrasonic communications is displayed, and a target interactive tablet is confirmed according to a user operation.

5. The screen projection connection method according to claim 1, It is characterized in that The screen projection connection information includes a device identifier; Correspondingly, the obtaining of the screening reference information based on the screen projection connection information includes: When the projection connection information is obtained, the conference reservation information is obtained, and the device identification is extracted from the projection connection information, and the conference reservation information and the device identification are used as screening reference information; the conference reservation information includes reservation time information and reservation space information; Accordingly, screening the interactive tablet according to the screening reference information to confirm the target interactive tablet to be connected includes: In the case where the system time is adapted to the reservation time information, matching the device identifier in the screening reference information with the reservation space information; When there is a target device identifier in the screening reference information that matches the reserved space information, the interactive tablet corresponding to the target device identifier is used as the target interactive tablet.

6. The screen projection connection method according to any one of claims 1 to 5, It is characterized in that The establishing a screen projection connection with the target interactive tablet according to the screen projection connection information corresponding to the target interactive tablet includes: Sending a screen projection connection request to the target interactive tablet and displaying a verification code input window; Verification code characters are received through the verification code input window, and when the verification code characters are consistent with the verification code displayed by the target interactive tablet, a screen projection connection is established with the target interactive tablet based on the screen projection connection information. The verification code is displayed after the target interactive tablet receives the screen projection connection request.

7. The screen projection connection method according to any one of claims 1 to 5, It is characterized in that After establishing a screen projection connection with the target interactive tablet according to the screen projection connection information corresponding to the target interactive tablet, the method further includes: When the type of the currently connected network is inconsistent with the preset target network type, the currently connected network is switched according to the preset switching rule.

8. The screen projection connection method according to any one of claims 1 to 5, It is characterized in that The obtaining the screening reference information based on the screen projection connection information includes: The screen projection connection information is decrypted based on a preset encryption algorithm, and the screening reference information is obtained from the decrypted screen projection connection information.

9. Screen projection connection device, It is characterized in that include: An information receiving unit, configured to receive screen projection connection information broadcast by an interactive tablet via at least one wireless communication method; An information acquisition unit, configured to acquire screening reference information based on the screen projection connection information; A target screening unit, configured to screen the interactive tablets according to the screening reference information, and confirm a target interactive tablet to be connected; The connection establishing unit is used to establish a screen projection connection with the target interactive tablet according to the screen projection connection information corresponding to the target interactive tablet.

10. Electronic equipment, It is characterized in that include: one or more processors; a memory for storing one or more computer programs; When the one or more computer programs are executed by the one or more processors, the electronic device implements the screen projection connection method as described in any one of claims 1-8.

11. A computer-readable storage medium having a computer program stored thereon, It is characterized in that When the computer program is executed by a processor, it implements the screen projection connection method as described in any one of claims 1-8.

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