CN112422488A

CN112422488A - Screen projection method and device

Info

Publication number: CN112422488A
Application number: CN201910786482.0A
Authority: CN
Inventors: 刘轶; 楼飞; 吴易明
Original assignee: Nail Holding Cayman Co ltd
Current assignee: Nail Holding Cayman Co ltd; Dingtalk Holding Cayman Ltd
Priority date: 2019-08-23
Filing date: 2019-08-23
Publication date: 2021-02-26

Abstract

One or more embodiments of the present specification provide a screen projection method and apparatus, and the method may include: the method comprises the steps that a server determines a screen projecting terminal corresponding to a device screen projecting code contained in a first screen projecting request according to the first screen projecting request initiated by user equipment; the server pushes a security verification code to the screen projection terminal under the condition that the user equipment has security risk, so that the screen projection terminal displays the security verification code; and the server returns screen projection information aiming at the screen projection terminal to the user equipment according to a second screen projection request which is initiated by the user equipment and contains the security verification code.

Description

Screen projection method and device

Technical Field

One or more embodiments of the present disclosure relate to the field of internet technologies, and in particular, to a screen projection method and apparatus.

Background

By configuring the screen projection terminal for the display equipment such as a projector, a conference panel and a television, a user can realize screen projection operation based on the screen projection terminal. Specifically, by establishing a connection between the user equipment and the screen projection terminal, the user equipment can transmit the display content on its screen to the screen projection terminal, and the screen projection terminal synchronizes the display content to the display equipment, which is equivalent to "projecting" the screen content of the user equipment onto the screen of the display equipment, and therefore the screen projection is called as screen projection. The screen size of the display device is often much larger than that of the user device, which is convenient for the user to share and explain the display content on the user device, and thus the display device is widely applied to scenes such as lectures and conferences.

In the related art, the screen projection operation may include various forms such as local area network screen projection and public network screen projection. For the screen projection of the local area network, the user equipment and the screen projection terminal need to be located in the same local area network, and the user equipment can establish connection with the screen projection terminal and realize the screen projection by inputting the equipment screen projection code provided by the screen projection terminal. For public network screen projection, the user equipment does not need to be located in the same local area network as the screen projection terminal, and can establish connection with the screen projection terminal through a public network (such as the internet) to realize screen projection.

Disclosure of Invention

In view of this, one or more embodiments of the present disclosure provide a screen projection method and apparatus.

To achieve the above object, one or more embodiments of the present disclosure provide the following technical solutions:

according to a first aspect of one or more embodiments of the present specification, there is provided a screen projection method, including:

the method comprises the steps that a server determines a screen projecting terminal corresponding to a device screen projecting code contained in a first screen projecting request according to the first screen projecting request initiated by user equipment;

the server pushes a security verification code to the screen projection terminal under the condition that the user equipment has security risk, so that the screen projection terminal displays the security verification code;

and the server returns screen projection information aiming at the screen projection terminal to the user equipment according to a second screen projection request which is initiated by the user equipment and contains the security verification code.

According to a second aspect of one or more embodiments of the present specification, there is provided a screen projection method, including:

the server pushes a security verification code to the screen projection terminal so that the screen projection terminal can display the security verification code;

According to a third aspect of one or more embodiments of the present specification, there is provided a screen projection method, including:

the screen projection terminal displays a screen projection code of equipment, wherein the screen projection code of the equipment uniquely corresponds to the screen projection terminal, so that a first screen projection request containing the screen projection code of the equipment is initiated to a server by user equipment;

the screen-throwing terminal receives a security verification code pushed by a server, and the security verification code is pushed to the screen-throwing terminal by the server under the condition that the first screen-throwing request is received and the user equipment is determined to have security risks;

the screen projection terminal displays the security verification code, so that the server returns screen projection information aiming at the screen projection terminal to the user equipment under the condition that the server receives a second screen projection request which is initiated by the user equipment and contains the security verification code.

According to a fourth aspect of one or more embodiments of the present specification, there is provided a screen projection method, including:

the screen projection terminal receives a security verification code pushed by a server, and the security verification code is pushed to the screen projection terminal by the server under the condition that the server receives the first screen projection request;

According to a fifth aspect of one or more embodiments of the present specification, there is provided a screen projection method, including:

the method comprises the steps that user equipment initiates a first screen projection request containing a screen projection code of the equipment to a server according to the screen projection code of the equipment displayed by a screen projection terminal, so that the server determines the screen projection terminal based on the screen projection code of the equipment and pushes a safety verification code to the screen projection terminal;

the user equipment initiates a second screen projection request containing the security verification code to the server according to the security verification code displayed by the screen projection terminal;

and the user equipment receives screen projection information which is returned by the server and aims at the screen projection terminal, and the screen projection information is returned by the server in response to the second screen projection request.

According to a sixth aspect of one or more embodiments of the present specification, there is provided a screen projection apparatus, including:

the device comprises a determining unit, a display unit and a display unit, wherein the determining unit enables the server to determine a screen projecting terminal corresponding to a device screen projecting code contained in a first screen projecting request according to the first screen projecting request initiated by user equipment;

the pushing unit is used for pushing a security verification code to the screen projection terminal by the server under the condition that the user equipment has security risk so as to display the security verification code by the screen projection terminal;

and the return unit enables the server to return screen projection information aiming at the screen projection terminal to the user equipment according to a second screen projection request which is initiated by the user equipment and contains the security verification code.

According to a seventh aspect of one or more embodiments of the present specification, there is provided a screen projection apparatus, including:

the pushing unit enables the server to push a security verification code to the screen projection terminal so that the screen projection terminal can display the security verification code;

According to an eighth aspect of one or more embodiments of the present specification, there is provided a screen projection apparatus including:

the screen-casting code display unit enables a screen-casting terminal to display a screen-casting code of equipment, wherein the screen-casting code of the equipment uniquely corresponds to the screen-casting terminal, so that a first screen-casting request containing the screen-casting code of the equipment is initiated to a server by user equipment;

the receiving unit enables the screen-throwing terminal to receive a security verification code pushed by a server, and the security verification code is pushed to the screen-throwing terminal by the server under the condition that the first screen-throwing request is received and the user equipment is determined to have security risk;

and the verification code display unit enables the screen projection terminal to display the security verification code, so that the server returns screen projection information aiming at the screen projection terminal to the user equipment under the condition that the server receives a second screen projection request which is initiated by the user equipment and contains the security verification code.

According to a ninth aspect of one or more embodiments of the present specification, there is provided a screen projection apparatus, including:

the receiving unit enables the screen projection terminal to receive a security verification code pushed by a server, and the security verification code is pushed to the screen projection terminal by the server under the condition that the server receives the first screen projection request;

According to a tenth aspect of one or more embodiments of the present specification, there is provided a screen projection apparatus including:

the first request unit enables user equipment to initiate a first screen projection request containing the screen projection code of the equipment to a server according to the screen projection code of the equipment displayed by the screen projection terminal, so that the server determines the screen projection terminal based on the screen projection code of the equipment and pushes a safety verification code to the screen projection terminal;

the second request unit enables the user equipment to initiate a second screen projection request containing the security verification code to the server according to the security verification code displayed by the screen projection terminal;

and the receiving unit enables the user equipment to receive screen projection information which is returned by the server and aims at the screen projection terminal, and the screen projection information is returned by the server in response to the second screen projection request.

According to an eleventh aspect of one or more embodiments herein, there is provided an electronic device, comprising:

a processor;

a memory for storing processor-executable instructions;

wherein the processor implements the method according to the first aspect or the second aspect by executing the executable instructions.

According to a twelfth aspect of one or more embodiments of the present description, there is provided a computer-readable storage medium having stored thereon computer instructions which, when executed by a processor, implement the steps of the method according to the first or second aspect.

According to a thirteenth aspect of one or more embodiments of the present specification, there is provided an electronic apparatus, including:

a processor;

a memory for storing processor-executable instructions;

wherein the processor implements the method according to the third or fourth aspect by executing the executable instructions.

According to a fourteenth aspect of one or more embodiments of the present specification, a computer-readable storage medium is presented, on which computer instructions are stored, which instructions, when executed by a processor, implement the steps of the method according to the third or fourth aspect.

According to a fifteenth aspect of one or more embodiments herein, there is provided an electronic device comprising:

a processor;

a memory for storing processor-executable instructions;

wherein the processor implements the method according to the fifth aspect by executing the executable instructions.

According to a sixteenth aspect of one or more embodiments of the present description, there is provided a computer-readable storage medium having stored thereon computer instructions which, when executed by a processor, implement the steps of the method according to the fifth aspect.

Drawings

Fig. 1 is a schematic diagram of an architecture of a screen projection system according to an exemplary embodiment.

Fig. 2 is a flowchart of a screen projection method on a server side according to an exemplary embodiment.

Fig. 3 is a flowchart of a screen projection method at a screen projection terminal side according to an exemplary embodiment.

Fig. 4 is a flowchart of another server-side screen projection method provided by an exemplary embodiment.

Fig. 5A is a flowchart of another screen projection method at a screen projection terminal according to an exemplary embodiment.

Fig. 5B is a flowchart of a screen projection method on the user equipment side according to an exemplary embodiment.

FIG. 6 is an interaction diagram for implementing public network screen projection according to an exemplary embodiment.

Fig. 7 is a schematic diagram of a screen projection information presentation interface according to an exemplary embodiment.

Fig. 8 is a schematic structural diagram of a server-side device according to an exemplary embodiment.

Fig. 9 is a block diagram of a server-side screen projection apparatus according to an exemplary embodiment.

Fig. 10 is a schematic structural diagram of a device at a screen projection terminal side according to an exemplary embodiment.

Fig. 11 is a block diagram of a screen projection device at a screen projection terminal according to an exemplary embodiment.

Fig. 12 is a schematic structural diagram of another server-side device according to an exemplary embodiment.

Fig. 13 is a block diagram of another server-side screen projection device provided by an exemplary embodiment.

Fig. 14 is a schematic structural diagram of another device at the screen projection terminal side according to an exemplary embodiment.

Fig. 15 is a block diagram of another screen projection device at a screen projection terminal according to an exemplary embodiment.

Fig. 16 is a schematic structural diagram of a device on the user equipment side according to an exemplary embodiment.

Fig. 17 is a block diagram of a screen projection apparatus on a user equipment side according to an exemplary embodiment.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with one or more embodiments of the present specification. Rather, they are merely examples of apparatus and methods consistent with certain aspects of one or more embodiments of the specification, as detailed in the claims which follow.

It should be noted that: in other embodiments, the steps of the corresponding methods are not necessarily performed in the order shown and described herein. In some other embodiments, the method may include more or fewer steps than those described herein. Moreover, a single step described in this specification may be broken down into multiple steps for description in other embodiments; multiple steps described in this specification may be combined into a single step in other embodiments.

Fig. 1 is a schematic diagram of an architecture of a screen projection system according to an exemplary embodiment. As shown in fig. 1, the system may include a server 11, a network 12, a user device 13, a screen projection terminal 14, and a display device 15.

The server 11 may be a physical server comprising a separate host, or the server 11 may be a virtual server carried by a cluster of hosts. In the operation process, the server 11 may operate a server-side program of a certain application to implement a related service function of the application, for example, when the server 11 operates a program of a mobile group office platform, the server may be implemented as a server of the mobile group office platform.

In this embodiment, the mobile group office platform not only can implement a communication function, but also can be used as an integrated functional platform with many other functions, for example, to process group events such as an approval event (e.g., an approval event such as leave request, office article claim, and finance), an attendance event, a task event, a log event, and a screen projection event, which is not limited in one or more embodiments of the present specification. More specifically, the mobile corporate office platform may be hosted in an Instant Messaging application in the related art, such as an Enterprise Instant Messaging (EIM) application. Certainly, the instant messaging function is only one of the communication functions supported by the mobile group office platform, and the mobile group office platform can also implement more other functions such as those described above, and details thereof are not described here.

The network 12 may include various types of wired or wireless networks. In one embodiment, the Network 12 may include the Public Switched Telephone Network (PSTN) and the Internet. The user equipment 13 can interact with the server 11 through the network 12, the screen projection terminal 14 can interact with the server 11 through the network 12, and the user equipment 13 can interact with the screen projection terminal 14 through the network 12.

The user equipment 13 may comprise electronic equipment of the type such as: tablet devices, notebook computers, Personal Digital Assistants (PDAs), wearable devices (e.g., smart glasses, smart watches, etc.), etc., which are not limited by one or more embodiments of the present disclosure. During the operation, the user device 13 may operate a client-side program of an application to implement a related service function of the application, for example, when the electronic device operates a program of a mobile community office platform, the electronic device may be implemented as a client of the mobile community office platform.

The screen projection terminal 14 may be an Access Point (AP) having an independent network management capability, or the network device 11 may include a Wireless Access Point and a Wireless Access Point Controller (AC) performing management control on the Wireless Access Point, which is not limited in this specification. In the operation process, the screen projection terminal 14 may maintain a local area network, so that the user equipment 13 may establish a connection with the screen projection terminal 14 based on the local area network to implement the screen projection function. Or, during operation, the screen projection terminal 14 and the user equipment 13 may access the network 12 at the same time, and the network 12 may be a public network (e.g., the internet), so that the user equipment 13 may establish a connection with the screen projection terminal 14 based on the network 12 to implement a screen projection function. The screen projection terminal 14 further establishes a connection with the display device 15, where the connection may include a wired connection or a wireless connection, for example, the wireless connection may be implemented based on a bluetooth protocol or a WIFI protocol, so that the screen projection terminal 14 may transmit screen projection content from the user device 13 to the display device 15 to be displayed by the display device 15.

The display device 15 may include a projector, a conference panel, a television, and the like, which is not limited in this specification. In a scene such as a lecture, a meeting, etc., the screen size of the display device 15 is generally larger than the screen size of the user device 13, so that a plurality of users or a user at a remote place can view the display content of the display device 15; however, in some scenarios, the display device 15 may also include user devices such as mobile phones, notebook computers, etc. used by other participants, and the participants may view the screen-shot content directly on their respective user devices.

Fig. 2 is a flowchart of a screen projection method on a server side according to an exemplary embodiment. As shown in fig. 2, the method applied to a server (e.g., the server 11 shown in fig. 1) may include the following steps:

step 202, a server determines a screen projecting terminal corresponding to a screen projecting code of equipment contained in a first screen projecting request according to the first screen projecting request initiated by user equipment.

In an embodiment, a server running a mobile group office platform on a server, a user device and a screen-casting terminal respectively run a client of the mobile group office platform on the server, so that data interaction and other operations can be realized among the server, the user device and the screen-casting terminal based on the mobile group office platform, thereby realizing the screen-casting scheme of the specification.

In one embodiment, the screen projection code of the equipment can be generated by a server and is pre-distributed to each screen projection terminal; or the screen projection code of the equipment can be locally generated by the screen projection terminal according to a preset mode and uploaded to the server. In a word, the server records the one-to-one mapping relation between each screen projection terminal and the screen projection code of the equipment, so that the server can accurately and uniquely determine the corresponding screen projection terminal based on the screen projection code of the equipment contained in the first screen projection request.

In an embodiment, the screen-projecting terminal has a display screen, and the device screen-projecting code can be displayed on the display screen, so that a user of the user equipment can view the device screen-projecting code and input the device screen-projecting code into the user equipment to generate the first screen-projecting request. Besides being displayed on the display screen, the screen-projecting terminal can inform the user of the screen-projecting code of the device through other modes, such as voice broadcast, and the like, which is not limited in this specification. The user equipment can display an input interface for a user to input the screen projection code by the user equipment; or the user equipment can collect input voice of a user and recognize the screen projection code of the equipment from the input voice; alternatively, the user device may provide other ways for the user to complete the input operation of the screen-projected code of the device.

In one embodiment, the user device may maintain a history of all device screen shots entered by the user. Then, if the user has previously input the device screen-casting code, the user does not need to re-input the device screen-casting code, and only needs to search the device screen-casting code in the history maintained by the user device, and the first screen-casting request can be generated accordingly.

And 204, the server pushes a security verification code to the screen projection terminal under the condition that the user equipment has security risk, so that the screen projection terminal displays the security verification code.

In an embodiment, the server may identify whether the user equipment has a security risk in a preset manner, for example, the server may determine that the user equipment has a security risk when the user equipment does not satisfy at least one of the following screen projection conditions: the logged-in user on the user equipment (equivalent to the user of the user equipment) and the screen projection terminal belong to the same group (the group in the specification may include enterprises, schools, hospitals, communities, government offices and the like, and the specification does not limit the group); the logged-in user is not in a screen-throwing blacklist of a group to which the screen-throwing terminal belongs; the logged-in user is in a screen-casting white list of a group to which the screen-casting terminal belongs; the request frequency (the sending frequency of the first screen projection request) of the logged-in user is not more than a first preset frequency; a network (such as a public network or other networks) used by the user equipment is not in a network blacklist of a group to which the screen projection terminal belongs; the network used by the user equipment is in a network white list of a group to which the screen projection terminal belongs, and the like, which is not limited in this specification. For the user equipment with the security risk, the server can further verify the security of the user equipment through the security verification code, so that the screen projection information aiming at the screen projection terminal is prevented from being directly provided to the user equipment under the condition that the security is unknown, and the unsafe user equipment is prevented from projecting the screen through the screen projection terminal at will based on the screen projection information.

In an embodiment, the security verification code is pushed to the screen projection terminal for displaying, so that only a user near the screen projection terminal can check the security verification code, and a second screen projection request is initiated, thereby preventing an illegal user not near the screen projection terminal from initiating the second screen projection request and obtaining screen projection information aiming at the screen projection terminal. For example, after a certain visitor visits a certain enterprise, the visitor may use and record the device screen-projecting code of the screen-projecting terminal in the enterprise, and then after the visitor leaves the enterprise, the visitor may initiate the first screen-projecting request to the server through the device screen-projecting code at any time, but the visitor cannot obtain screen-projecting information for the screen-projecting terminal because the visitor cannot obtain the security verification code, so that the visitor cannot project the screen for the screen-projecting terminal no matter the visitor operates intentionally or unintentionally, and the visitor can be prevented from affecting normal use of the screen-projecting terminal by staff in the enterprise.

In an embodiment, the server may return the local area network screen projection information for the screen projection terminal to the user equipment when determining that the user equipment has a security risk. At this time, if the user equipment joins the local area network where the screen projection terminal is located or the local area network created by the screen projection terminal, the user equipment can utilize the screen projection information of the local area network to realize screen projection operation based on the screen projection terminal; the user equipment and the user thereof are inevitably located near the screen projection terminal due to the limited coverage area of the local area network, so that the user equipment can discover and stop the screen projection in time even if the screen projection happens randomly, namely, the safety risk is in a controllable degree.

In an embodiment, the server may return screen projection information for the screen projection terminal to the user equipment without a security risk of the user equipment. For example, when a logged-in user of the user equipment and the screen projection terminal belong to the same group, it may be determined that the user equipment does not have a security risk, so that the user equipment may implement a screen projection operation based on the screen projection terminal by using the returned screen projection information, without connecting the user equipment to a local area network where the screen projection terminal is located or created.

And step 206, the server returns screen projection information aiming at the screen projection terminal to the user equipment according to a second screen projection request which is initiated by the user equipment and contains the security verification code.

In an embodiment, since the security verification code is displayed on the screen-projection terminal, when the second screen-projection request initiated by the user equipment includes the security verification code, it indicates that the user equipment and the user thereof are in the vicinity of the screen-projection terminal, otherwise, the security verification code cannot be obtained. Therefore, the safety risk of the user equipment can be eliminated or reduced to a controllable degree, and the screen projection information can be timely found and stopped even if the user equipment arbitrarily projects the screen, so that the user equipment can project the screen.

In an embodiment, the server can push a validity period corresponding to the security verification code to the screen projection terminal, so that the screen projection terminal displays the security verification code in the validity period, and terminates displaying the security verification code after the validity period elapses; accordingly, the server may set the security verification code to an invalid state after the validity period elapses, so that the screen-casting request including the security verification code received after the validity period elapses cannot be normally responded (i.e., screen-casting information is not returned). Based on the management of the validity period, a user near the screen projection terminal can be ensured to read the security verification code in time and generate a second screen projection request according to the security verification code, and meanwhile, the security risk is prevented from being increased due to the fact that the security verification code is used for multiple times.

In an embodiment, after receiving the first screen projection request, the server may record initiator information (user equipment and/or a logged-in user) of the first screen projection request; and after receiving a second screen projection request containing the security verification code, the server can acquire initiator information (user equipment and/or logged-in user) of the second screen projection request, and compares the initiator information with the initiator information of the first screen projection request: and if the screen projection information is consistent with the screen projection information, returning the screen projection information, otherwise, not returning. Accordingly, after the user a near the screen projection terminal initiates the first screen projection request, even if the user B also near the screen projection terminal reads the security verification code and provides the security verification code to the user C not near the screen projection terminal, the user C cannot obtain the screen projection information for the screen projection terminal based on the security verification code, that is, the security verification code displayed at this time is exclusive to the user a, so that the risk that the security verification code is stolen is avoided.

In an embodiment, the server may count the frequency of pushing the security verification code to the same screen projection terminal, so as to limit the frequency to be not greater than a second preset frequency. In other words, when the frequency of pushing the security verification code for a certain screen-projecting terminal reaches the second preset frequency, the server will suspend pushing the security verification code for the screen-projecting terminal, for example, enter a cooling state with a preset duration, so as to avoid implementing network attack for the screen-projecting terminal and improve security. Further, after receiving a first screen projection request initiated by a user device used by a certain user, the server frequently (for example, reaching a second preset frequency) pushes a security verification code to the screen projection terminal, and then the server may further extract account information of the user and/or information (such as an IP address, an MAC address, and the like) of the user device used by the user and add the information to a blacklist, so that the server cannot continue to initiate an attack on the screen projection terminal.

In an embodiment, the server responds to a second screen projection request initiated by the user equipment, and can return the public network screen projection information for the screen projection terminal to the user equipment, so that the user equipment can realize the public network screen projection based on the public network screen projection information, and the user equipment can realize the screen projection through the screen projection terminal only by being connected to the public network and not in the same local area network with the screen projection terminal; especially, under the condition that the user equipment is originally connected to the public network, active switching from the public network to the local area network is not needed, and the user operation is facilitated to be simplified. In other embodiments, the server responds to the screen projection information returned to the user equipment by the second screen projection request initiated by the user equipment, and may also be used for screen projection through the screen projection terminal in other network environments, such as a private network or a private network inside an enterprise, in short, the network environment is different from a local area network accessed by the screen projection terminal, and the screen projection can be achieved without switching the user equipment from an accessed network to the local area network accessed by the screen projection terminal.

In an embodiment, after the server has provided the screen projection information to the user equipment, the server may receive a third screen projection request initiated by another device, where the third screen projection request includes a device screen projection code for the screen projection terminal, and when the third screen projection information is from an associated device of the user equipment, the server may determine that the state of the associated device is the same as or similar to that of the user equipment, for example, the associated device and the user equipment are both located near the screen projection terminal, so that the server may directly return the screen projection information for the screen projection terminal to the associated device without returning a security verification code to the associated device.

When a certain device satisfies at least one of the following conditions, it may be determined as a device associated with the user equipment: the registered user of the associated device is consistent with the community attribution information of the registered user of the user device, for example, the registered user and the community attribution information belong to the same enterprise; the geographic positions of the associated device and the user device are close, for example, the server may respectively obtain geographic position information acquired by the two devices based on the built-in positioning chip, and compare the geographic position information and the geographic position information to determine whether the two devices are close (for example, when the geographic positions are not greater than a preset distance, it is determined that the two devices are close); the interval between the initiation time of the third screen-casting request and the initiation time of the second screen-casting request does not exceed a preset time length, and at this time, the user of the user equipment and the user of the associated equipment may be in the same conference. For example, when multiple users in the same enterprise participate in a conference in the same conference room, after a certain user obtains screen projection information for a screen projection terminal based on the technical solution of the present specification, it may be verified that other users are in the same enterprise and in a similar geographical location to the user, and when the other users initiate the third screen projection request to the server, if the initiation time of the third screen projection request is similar to the initiation time of the second screen projection request (if the interval does not exceed the preset time length), the server may determine that the users are in the same conference, and thus may directly return screen projection information to the other users.

Fig. 3 is a flowchart of a screen projection method at a screen projection terminal side according to an exemplary embodiment. As shown in fig. 3, the method applied to a screen projection terminal (such as the screen projection terminal 14 shown in fig. 1) may include the following steps:

step 302, a screen projection terminal displays a screen projection code of equipment, wherein the screen projection code of the equipment uniquely corresponds to the screen projection terminal, so that a first screen projection request containing the screen projection code of the equipment is initiated to a server by user equipment.

Step 304, the screen-casting terminal receives a security verification code pushed by a server, and the security verification code is pushed to the screen-casting terminal by the server under the condition that the first screen-casting request is received and the user equipment is determined to have a security risk.

In an embodiment, the server may identify whether the user equipment has a security risk in a preset manner, for example, the server may determine that the user equipment has a security risk when the user equipment does not satisfy at least one of the following screen projection conditions: the logged-in user on the user equipment (equivalent to the user of the user equipment) and the screen projection terminal belong to the same group (the group in the specification may include enterprises, schools, hospitals, communities, government offices and the like, and the specification does not limit the group); the logged-in user is not in a screen-throwing blacklist of a group to which the screen-throwing terminal belongs; the logged-in user is in a screen-casting white list of a group to which the screen-casting terminal belongs; the request frequency (the sending frequency of the first screen projection request) of the logged-in user is not more than a first preset frequency; a network (such as a public network or other networks) used by the user equipment is not in a network blacklist of a group to which the screen projection terminal belongs; the network used by the user equipment is in a network white list of a group to which the screen projection terminal belongs, and the like, which is not limited in this specification. For the user equipment with the safety risk, the server can further verify the safety of the user equipment through the safety verification code, the screen projection information aiming at the screen projection terminal is prevented from being directly provided to the user equipment under the condition that the safety is unknown, and the unsafe user equipment is prevented from projecting the screen through the screen projection terminal at will based on the public network screen projection information.

Step 306, the screen-projecting terminal displays the security verification code, so that the server returns screen-projecting information for the screen-projecting terminal to the user equipment when receiving a second screen-projecting request which is initiated by the user equipment and contains the security verification code.

In one embodiment, the screen projection terminal can receive a validity period corresponding to the security verification code pushed by the server, display the security verification code in the validity period, and terminate displaying the security verification code after the validity period elapses; accordingly, the server may set the security verification code to an invalid state after the validity period elapses, so that the screen-casting request including the security verification code received after the validity period elapses cannot be normally responded (i.e., screen-casting information is not returned). Based on the management of the validity period, a user near the screen projection terminal can be ensured to read the security verification code in time and generate a second screen projection request according to the security verification code, and meanwhile, the security risk is prevented from being increased due to the fact that the security verification code is used for multiple times.

In an embodiment, the frequency of pushing the security verification code to the same screen projection terminal may be limited by the server to be not greater than a second preset frequency. In other words, when the frequency of pushing the security verification code for a certain screen-projecting terminal reaches the second preset frequency, the server will suspend pushing the security verification code for the screen-projecting terminal, for example, enter a cooling state with a preset duration, so as to avoid implementing network attack for the screen-projecting terminal and improve security. Further, after receiving a first screen projection request initiated by a user device used by a certain user, the server frequently (for example, reaching a second preset frequency) pushes a security verification code to the screen projection terminal, and then the server may further extract account information of the user and/or information (such as an IP address, an MAC address, and the like) of the user device used by the user and add the information to a blacklist, so that the server cannot continue to initiate an attack on the screen projection terminal.

Fig. 4 is a flowchart of another server-side screen projection method provided by an exemplary embodiment. As shown in fig. 4, the method applied to a server (e.g., the server 11 shown in fig. 1) may include the following steps:

step 402, a server determines a screen projecting terminal corresponding to a screen projecting code of equipment contained in a first screen projecting request according to the first screen projecting request initiated by user equipment.

Step 404, the server pushes a security verification code to the screen projection terminal, so that the screen projection terminal displays the security verification code.

In an embodiment, the server always pushes a security verification code to the screen-casting terminal for the received first screen-casting request, so that the security of the user equipment is verified based on the security verification code. The security verification codes are pushed to the screen projection terminal to be displayed, so that only users near the screen projection terminal can check the security verification codes and initiate a second screen projection request, and illegal users not near the screen projection terminal are prevented from initiating the second screen projection request and obtaining screen projection information aiming at the screen projection terminal. For example, after a certain visitor visits a certain enterprise, the visitor may use and record the device screen-projecting code of the screen-projecting terminal in the enterprise, and then after the visitor leaves the enterprise, the visitor may initiate the first screen-projecting request to the server through the device screen-projecting code at any time, but the visitor cannot obtain screen-projecting information for the screen-projecting terminal because the visitor cannot obtain the security verification code, so that the visitor cannot project the screen for the screen-projecting terminal no matter the visitor operates intentionally or unintentionally, and the visitor can be prevented from affecting normal use of the screen-projecting terminal by staff in the enterprise.

In an embodiment, the server can identify whether the user equipment has a security risk or not through a preset mode, so that the security verification code is pushed to the screen projection terminal only when the user equipment has the security risk, and the security verification code does not need to be pushed when the user equipment does not have the security risk. For example, the server may determine that the user equipment is at a security risk if the user equipment does not satisfy at least one of the following screen projection conditions: the logged-in user on the user equipment (equivalent to the user of the user equipment) and the screen projection terminal belong to the same group (the group in the specification may include enterprises, schools, hospitals, communities, government offices and the like, and the specification does not limit the group); the logged-in user is not in a screen-throwing blacklist of a group to which the screen-throwing terminal belongs; the logged-in user is in a screen-casting white list of a group to which the screen-casting terminal belongs; the request frequency (the sending frequency of the first screen projection request) of the logged-in user is not more than a first preset frequency; a network (such as a public network or other networks) used by the user equipment is not in a network blacklist of a group to which the screen projection terminal belongs; the network used by the user equipment is in a network white list of a group to which the screen projection terminal belongs, and the like, which is not limited in this specification. For the user equipment with the security risk, the server can further verify the security of the user equipment through the security verification code, so that the screen projection information aiming at the screen projection terminal is prevented from being directly provided to the user equipment under the condition that the security is unknown, and the unsafe user equipment is prevented from projecting the screen through the screen projection terminal at will based on the screen projection information.

Step 406, the server returns screen projection information for the screen projection terminal to the user equipment according to a second screen projection request which is initiated by the user equipment and contains the security verification code.

Fig. 5A is a flowchart of another screen projection method at a screen projection terminal according to an exemplary embodiment. As shown in fig. 5A, the method applied to a screen projection terminal (such as the screen projection terminal 14 shown in fig. 1) may include the following steps:

step 502A, a screen-casting terminal displays a screen-casting code of equipment, wherein the screen-casting code of the equipment uniquely corresponds to the screen-casting terminal, so that a first screen-casting request containing the screen-casting code of the equipment is initiated to a server by user equipment.

Step 504A, the screen-casting terminal receives a security verification code pushed by a server, and the security verification code is pushed to the screen-casting terminal by the server under the condition that the server receives the first screen-casting request.

Step 506A, the screen-casting terminal displays the security verification code, so that the server returns screen-casting information aiming at the screen-casting terminal to the user equipment under the condition that the server receives a second screen-casting request which is initiated by the user equipment and contains the security verification code.

Fig. 5B is a flowchart of a screen projection method on the user equipment side according to an exemplary embodiment. As shown in fig. 5B, the method applied to a user equipment (e.g. the user equipment 13 shown in fig. 1) may include the following steps:

step 502B, the user equipment initiates a first screen projection request containing the screen projection code of the equipment to a server according to the screen projection code of the equipment displayed by the screen projection terminal, so that the server determines the screen projection terminal based on the screen projection code of the equipment and pushes a security verification code to the screen projection terminal.

When the screen projecting terminal displays the screen projecting code of the equipment, the user equipment can obtain the screen projecting code of the equipment in the following mode: under the condition that the equipment screen projection code is displayed as the two-dimensional code, the user equipment can obtain the equipment screen projection code by identifying the two-dimensional code; or, under the condition that the device screen-projecting code is displayed as a character string, the user equipment can acquire and identify the character string to obtain the device screen-projecting code; alternatively, the user device may present an input interface and obtain the device screen-cast code from user input information received by the input interface.

Step 504B, the user equipment initiates a second screen projection request containing the security verification code to the server according to the security verification code displayed by the screen projection terminal.

Step 506B, the user equipment receives screen projection information which is returned by the server and aims at the screen projection terminal, and the screen projection information is returned by the server in response to the second screen projection request.

Similar to the screen projection code of the device, when the screen projection terminal displays the security verification code, the user device may obtain the security verification code in the following manner: in the case that the security verification code is displayed as a two-dimensional code, the user equipment may obtain the security verification code by recognizing the two-dimensional code; or, in the case that the security verification code is displayed as a character string, the user equipment may acquire and recognize the character string to obtain the security verification code; alternatively, the user device may present an input interface and obtain the security passcode from user input received at the input interface.

Assuming that the user equipment used by the user Ua is a notebook computer, and the screen projection terminal may specifically adopt the product form of a screen projection box, the user Ua may attempt to establish a network connection between the notebook computer and the screen projection box, so as to project the display content on the notebook computer onto the television screen connected to the screen projection box. Taking the instant messaging application T as an example, the client 1 of the instant messaging application T can be operated on the notebook computer, the client 2 of the instant messaging application T can be operated on the screen projection box, and the server of the instant messaging application T can be operated on the server, so that data interaction can be realized among the notebook computer, the screen projection box and the server based on the instant messaging application T, which is described below with reference to fig. 6. Fig. 6 is an interaction diagram for implementing public network screen projection according to an exemplary embodiment. As shown in fig. 6, the interaction process between the laptop, the screen projection box and the server may include the following steps:

step 601, the server distributes screen projection codes to the screen projection boxes.

In an embodiment, the server may generate the screen-casting code in a preset manner, and the screen-casting code is distributed to the screen-casting box, so as to establish a corresponding relationship between the screen-casting box and the screen-casting code. The screen projecting codes corresponding to all the screen projecting boxes are generated and distributed by the server, so that the server can ensure that the screen projecting codes corresponding to all the screen projecting boxes are different from one another, a one-to-one mapping relation is established between the screen projecting boxes and the screen projecting codes, and the mapping relation is maintained at the server.

And step 602, the screen projection box displays the allocated screen projection codes.

In one embodiment, the screen projection box may have a display screen, so that the screen projection box may display the allocated screen projection codes on the display screen. Alternatively, the screen projection box may present the assigned screen projection codes on an attached television or other display device. For example, as shown in fig. 7, in a screen projection information display interface 700 formed by the screen projection box, related prompt information may be displayed in the display area 71 to instruct the user to perform operations of wireless screen projection, meeting room reservation, scanning a code and screen projection, and information such as a screen projection code and a name of the local area network WiFi may be displayed in the display area 721, for example, the screen projection code in fig. 7 is 32562. In addition, the screen-casting information presentation interface 700 may also include other information, such as meeting room name and reservation information shown in the presentation area 722, and two-dimensional code for scanning a screen for screen casting shown in the presentation area 723.

Of course, besides the display mode, the screen projection box may also provide the screen projection code to the user Ua in other modes, such as voice broadcast, and the description does not limit this.

Step 603, the notebook computer uploads the input screen-projecting code to the server.

In one embodiment, the notebook computer may receive the screen-projecting code input by the user Ua and upload the screen-projecting code to the server. For example, a notebook computer may initiate a first screen projection request to the server, and carry a screen projection code input by the user Ua in the first screen projection request.

In one embodiment, the notebook computer may present an interface so that the user Ua may input the screen-cast code into the interface; or the notebook computer can collect the voice of the user Ua and recognize the screen-projecting code from the voice of the user Ua, and the user Ua can also complete the input of the screen-projecting code; or, the notebook computer can collect screen projection code broadcast voice of the screen projection box under the trigger of the user Ua, and recognize the screen projection code from the screen projection code broadcast voice, which is equivalent to the user Ua completing the input of the screen projection code. Similarly, the user Ua can also input the verification code in other manners, which is not described in detail herein.

And step 604, the server determines a corresponding screen projection box according to the received screen projection code.

In an embodiment, based on the mapping relationship maintained on the server as described above, the server may determine the screen box corresponding to the received screen-casting code (uploaded by the user Ua).

In step 605, the server determines the community affiliation of the user Ua and the screen projection box.

In one embodiment, it is assumed that the user Ua and the screen projection box respectively have corresponding community attribution situations. The server maintains organization architecture information of each group (including information of members included in the group and information of intelligent devices such as screen-throwing boxes bound to the group), so that the server can know the group attribution condition of the user Ua and the screen-throwing boxes.

Assuming that the user Ua is an employee of the enterprise AA, and the screen projection box is bound to be an intelligent device of the enterprise AA, so that the server can determine that the user Ua is consistent with the group attribution information of the screen projection box; assume that user Ua is a employee of enterprise AA and the drop box is bound to be a smart device of enterprise BB so that the server can determine that the user Ua is inconsistent with the group affiliation information for the drop box.

When the user Ua is consistent with the group attribution information of the screen projection box, the probability that the user Ua carries out unsafe operation on the screen projection box is relatively low, and the server can judge that the user Ua has high safety; and when the group attribution information of the user Ua and the screen projection box is inconsistent, namely the user Ua is a visitor aiming at the screen projection box, the probability that the user Ua carries out unsafe operation on the screen projection box is relatively high, and the server can judge that the user Ua has low safety.

Of course, the server may also perform security judgment on the user Ua based on other dimensions, and only the community belonging information is taken as an example here.

Step 606a, when the user Ua has high security, the server returns the public network screen projection information to the notebook computer.

In an embodiment, the public network screen projection information may include information, such as a device UID and the like, for establishing a network connection between the notebook computer and the screen projection box and realizing the public network screen projection, which is not limited in this specification. In a word, based on the public network screen projection information provided by the server, the notebook computer and the screen projection box do not need to be in the same local area network, and network connection can be realized through the public network, so that the notebook computer can project a screen through the screen projection box, and screen display contents on the notebook computer are synchronously displayed on a television screen connected with the screen projection box.

And step 606b, when the user Ua has low security, the server issues a verification code to the screen projection box.

In one embodiment, the verification code issued by the server has randomness, so that the verification code cannot be guessed or simulated to be generated, and the security is high.

Step 606c, when the user Ua has low security, the server may also return the local area network screen projection information to the notebook computer.

In one embodiment, if the user Ua is actually near the screen projection box and the laptop and the screen projection box are connected to the same lan, the laptop may project a screen to the screen projection box based on the lan screen projection information.

In step 607, the screen projection box displays the received verification code.

In one embodiment, the screen projection information display interface 700 shown in fig. 7 may further include a verification code display area 73, and the screen projection box may display the verification code in the verification code display area 73, such as the verification code 5839 in fig. 7.

In one embodiment, when a user Ua belongs to a guest, the user Ua may have a security risk in that: in short, if the server directly provides the screen projection information to the user Ua, the user Ua may optionally project the screen to the screen projection box through the public network, thereby causing interference to the inside of the enterprise BB. Therefore, through the secondary verification process based on the verification code, only the user near the screen projection box can know the content of the verification code, when the user Ua is not near the screen projection box, the secondary verification cannot be completed, the public network screen projection information cannot be obtained, interference of the user Ua to an enterprise BB is avoided, when the user Ua is really near the screen projection box, the public network screen projection information can be obtained smoothly, and screen projection operation of the user Ua can be guaranteed to be carried out smoothly.

In step 608, the notebook computer uploads the inputted verification code to the server.

In an embodiment, the input process of the user Ua for the verification code and the process of uploading the verification code to the server by the notebook computer may refer to the related operation for the screen projection code in step 603, which is not described herein again.

In step 609, the server verifies the uploaded content.

In one embodiment, the server verifies whether the received verification code is the same as the verification code issued to the screen projection box, if so, the verification is passed, otherwise, the verification is not passed.

In one embodiment, the server may set a validity period for the verification code, such as valid for 60 seconds from the time of issuance of the verification code; then, when the contents of the verification codes are the same and the receiving time is within the validity period, the server determines that the verification is passed, otherwise, the verification is not passed.

In one embodiment, when the server issues the verification code based on the request of the user Ua, the server may further identify whether the received verification code is uploaded by the user Ua, and if not, the verification is not passed; if the contents of the verification codes uploaded by the user Ua are the same (the validity period described above may be further combined), the server determines that the verification is passed.

And step 610, the server returns the screen projection information of the public network to the notebook computer, so that the notebook computer performs screen projection of the public network to the screen projection box.

In an embodiment, reference may be made to the step 606a, which is not described herein again.

In an embodiment of the present specification, after the user equipment initiates a first screen projection request including a device screen projection code to the server, the server may determine a corresponding screen projection terminal based on the device screen projection code, and may send a security verification code to the screen projection terminal to verify whether the user equipment is near the screen projection terminal, thereby avoiding providing screen projection information for the screen projection terminal to the remote user equipment, and preventing a security problem from occurring.

Assuming that a user of the user equipment is in a conference room at a certain place, the user can realize local screen projection through a screen projection terminal in the conference room. If the conference participant also comprises other people in the other conference room, the user can also throw the screen to the screen throwing terminal in the other conference room through the user equipment, at the moment, the participants in the other conference room can acquire the equipment screen throwing codes on the local screen throwing terminal and inform the user of the equipment screen throwing codes, the user initiates a screen throwing request (equivalent to a first screen throwing request) containing the equipment screen throwing codes to the server, and after the server sends the security verification codes to the screen throwing terminal in the other conference room, the participants in the other conference room can also acquire the security verification codes on the local screen throwing terminal and inform the user of the security verification codes, so that the user initiates a screen throwing request (equivalent to a second screen throwing request) containing the security verification codes to the server to further obtain screen throwing information aiming at the screen throwing terminal in the other conference room. Therefore, a user can respectively project screens to local screen projection terminals and foreign screen projection terminals through the same user equipment, and the teleconference can be carried out smoothly.

In some scenarios, when the security verification code is sent to the screen projection device, the security verification code may be in a state of being easily leaked. Therefore, the server can send the security verification code to the specific object, so that only the specific object can know the security verification code; for example, the first screen-casting request may be pushed to a user device, such as a mobile phone, used by a specific user, which is different from the initiator of the first screen-casting request, and the specific user may decide whether to forward the first screen-casting request to the initiator of the first screen-casting request. For example, in a home scene, when a minor initiates a first screen-casting request, the security verification code is sent to the mobile phone of the parent, so that the parent can reasonably control and manage the screen-casting operation of the minor. For another example, in a large conference scene, when a speaker initiates a first screen projection request, the security verification code is sent to a mobile phone of a conference organizer or a host, so that the security verification code can be prevented from being obtained by a non-speaker, and it is ensured that only the speaker can perform screen projection. Similarly, through reasonable transmission of the security verification code, the exposure range of the security verification code can be limited, so as to improve the security.

Further, the number of the specific objects may be plural. In order to ensure that the specific objects do not screen and conflict at the same time, the sending time of the safety verification code can be controlled, and the time when the specific objects obtain the safety verification code is staggered. For example, when a conference has a plurality of speakers, according to a pre-agreed conference process, when a speaking period corresponding to a speaker arrives or is about to arrive, a security verification code may be provided to the speaker, so as to avoid that a subsequent speaker projects a screen in advance to interfere with a previous speaker.

Besides the implementation based on the security verification code, whether the user equipment is in the vicinity of the screen projection terminal can be verified in other ways. For example, when both the user equipment and the screen projection terminal support the NFC function, the user may approach or touch the user equipment to the screen projection terminal, so that the screen projection terminal may obtain information of the user equipment or a logged-in user thereof based on NFC and provide the information to the server; and when the server judges that the user equipment interacting with the screen projection terminal through NFC is the initiator of the first screen projection request, screen projection information can be returned to the initiator of the first screen projection request. For another example, the user may make a sound near the screen projection terminal, and the screen projection terminal may locally extract voiceprint features and upload the voiceprint features to the server after acquiring the audio data, or upload the audio data to the server and extract the voiceprint features from the server, and the server may determine the identity information of the user based on the voiceprint features: if the identity of the user is the same as that of the initiator of the first screen projection request, the fact that the initiator of the first screen projection request is located near the screen projection terminal is indicated, and the server can return screen projection information to the initiator of the first screen projection request.

For the application scene of screen projection in the meeting room, the screen projection operation of the participants can be controlled by combining the appointment information in the meeting room. For example, the server may obtain reservation information for each conference room, where the reservation information may include a conference room usage period, attendees, and the like, so that when the attendees initiate a first screen-projecting request (including a device screen-projecting code corresponding to a screen-projecting terminal) for the screen-projecting terminal in the conference room to the server within the reserved conference room usage period, the server may directly return screen-projecting information for the screen-projecting terminal; for the temporary attendees not included in the reservation information, if the first screen-throwing request is initiated for the screen-throwing terminal in the conference room, the server may send the security verification code to the screen-throwing terminal based on the technical scheme of the present specification, so that the server may return the screen-throwing information to the temporary attendees only when the temporary attendees initiate the second screen-throwing request including the security verification code again.

For the application scene of screen projection in the meeting room, the screen projection operation of the participants can be controlled by combining the appointment information and the verification operation in the meeting room. For example, the server may obtain reservation information for each conference room, where the reservation information may include a conference room usage period, participants, and the like, so that the server may issue a security verification code to the user equipment of the participants in advance (for example, the security verification code may be issued after the reservation is successful), and the user equipment of the participants may initiate a screen-projection request including the security verification code to the server, so that the server may mark an initiator of the screen-projection request (i.e., the participants) as being verified. Then, when the participant goes to the reserved conference room to participate in the conference, a first screen projection request (including the device screen projection code corresponding to the screen projection terminal) for the screen projection terminal in the conference room can be initiated to the server, and when the server determines that the initiator of the first screen projection request is marked to pass the verification, the server can directly return screen projection information for the screen projection terminal, so that the verification operation is implemented in advance, and the operation of the participant in the actual screen projection process is simplified. When a certain participant is marked as being verified, the server may have timeliness, for example, the participant is valid only in the conference time period indicated in the reservation information, and is marked as being not verified when the conference time period is exceeded (the conference time period is not reached, or the conference time period is ended), so that influence on users using the voting terminal in other time periods is avoided. Of course, for the temporary attendees not included in the reservation information (or attendees that are included in the reservation information but are not verified in advance), if a first screen-casting request (including a screen-casting code of the device of the screen-casting terminal) is initiated for the screen-casting terminal of the conference room, the server may send the security verification code to the screen-casting terminal based on the technical solution of this specification, so that when the temporary attendees (or unverified attendees) initiate a second screen-casting request including the security verification code again, the server may return screen-casting information to the temporary attendees (or unverified attendees).

FIG. 8 is a schematic block diagram of an apparatus provided in an exemplary embodiment. Referring to fig. 8, at the hardware level, the apparatus includes a processor 802, an internal bus 804, a network interface 806, a memory 808, and a non-volatile memory 810, but may also include hardware required for other services. The processor 802 reads a corresponding computer program from the non-volatile memory 810 into the memory 808 and then runs the computer program to form a screen projection device on a logical level. Of course, besides software implementation, the one or more embodiments in this specification do not exclude other implementations, such as logic devices or combinations of software and hardware, and so on, that is, the execution subject of the following processing flow is not limited to each logic unit, and may also be hardware or logic devices.

Referring to fig. 9, in a software implementation, the screen projection apparatus may include:

the determining unit 91, enabling the server to determine, according to a first screen-casting request initiated by the user equipment, a screen-casting terminal corresponding to a device screen-casting code included in the first screen-casting request;

the first pushing unit 92 is configured to enable the server to push a security verification code to the screen projection terminal under the condition that the user equipment has a security risk, so that the screen projection terminal displays the security verification code;

the first returning unit 93 is configured to enable the server to return screen projection information for the screen projection terminal to the user equipment according to a second screen projection request which is initiated by the user equipment and includes the security verification code.

Optionally, the screen projection code of the device is generated by the screen projection terminal; or the screen projection codes of the equipment are pre-distributed to the screen projection terminal by the server.

Optionally, the server determines that the user equipment has a security risk when the user equipment does not satisfy at least one of the following screen projection conditions:

the logged-in user on the user equipment and the screen projection terminal belong to the same group;

the logged-in user is not in a screen throwing blacklist of a group to which the screen throwing terminal belongs;

the logged-in user is in a screen-casting white list of a group to which the screen-casting terminal belongs;

the request frequency of the logged-in user is not more than a first preset frequency;

the network used by the user equipment is not in a network blacklist of a group to which the screen projection terminal belongs;

and the network used by the user equipment is in a network white list of a group to which the screen projection terminal belongs.

Optionally, the method further includes:

a second returning unit 94, configured to cause the server to return, to the user equipment, the local area network screen projection information for the screen projection terminal when the user equipment has a security risk.

Optionally, the method further includes:

the counting unit 95 counts the frequency of pushing the security verification code to the same screen projection terminal by the server, so as to limit the frequency to be not greater than a second preset frequency.

Optionally, the method further includes:

a third returning unit 96, configured to cause the server to return screen projection information for the screen projection terminal to the user equipment when the user equipment does not have a security risk.

Optionally, the method further includes:

the second pushing unit 97 is configured to push the validity period corresponding to the security verification code to the screen-casting terminal by the server, so that the screen-casting terminal displays the security verification code within the validity period.

Optionally, the screen projection information includes public network screen projection information.

Optionally, the method further includes:

a receiving unit 98, configured to enable the server to receive a third screen projection request, where the third screen projection request is from a device associated with the user equipment, and the third screen projection request includes a device screen projection code corresponding to the screen projection terminal;

a fourth returning unit 99, which causes the server to return screen projection information for the screen projection terminal to the associated device.

Optionally, the association device satisfies at least one of the following conditions:

the community attribution information of the logged-in user of the associated equipment is consistent with the community attribution information of the logged-in user of the user equipment;

the associated device is close to the geographical position of the user device;

and the interval between the initiation time of the third screen projection request and the initiation time of the second screen projection request does not exceed the preset time length.

FIG. 10 is a schematic block diagram of an apparatus provided in an exemplary embodiment. Referring to fig. 10, at the hardware level, the apparatus includes a processor 1002, an internal bus 1004, a network interface 1006, a memory 1008, and a non-volatile memory 1010, although it may also include hardware required for other services. The processor 1002 reads a corresponding computer program from the non-volatile memory 1010 into the memory 1008 and then runs the computer program to form a screen projection device on a logical level. Of course, besides software implementation, the one or more embodiments in this specification do not exclude other implementations, such as logic devices or combinations of software and hardware, and so on, that is, the execution subject of the following processing flow is not limited to each logic unit, and may also be hardware or logic devices.

Referring to fig. 11, in a software implementation, the screen projection apparatus may include:

a determining unit 1101, configured to enable a server to determine, according to a first screen projection request initiated by a user equipment, a screen projection terminal corresponding to a device screen projection code included in the first screen projection request;

a pushing unit 1102, which enables the server to push a security verification code to the screen projection terminal so that the screen projection terminal displays the security verification code;

a returning unit 1103, configured to enable the server to return screen projection information for the screen projection terminal to the user equipment according to a second screen projection request that is initiated by the user equipment and includes the security verification code.

FIG. 12 is a schematic block diagram of an apparatus provided in an exemplary embodiment. Referring to fig. 12, at the hardware level, the apparatus includes a processor 1202, an internal bus 1204, a network interface 1206, a memory 1208, and a non-volatile memory 1210, although other hardware required for services may be included. The processor 1202 reads a corresponding computer program from the non-volatile memory 1210 into the memory 1208 and then runs the computer program to form a screen projection device on a logical level. Of course, besides software implementation, the one or more embodiments in this specification do not exclude other implementations, such as logic devices or combinations of software and hardware, and so on, that is, the execution subject of the following processing flow is not limited to each logic unit, and may also be hardware or logic devices.

Referring to fig. 13, in a software implementation, the screen projection apparatus may include:

a screen-casting code display unit 1301, configured to enable a screen-casting terminal to display a screen-casting code of a device, where the device screen-casting code uniquely corresponds to the screen-casting terminal, so that a user device initiates a first screen-casting request including the device screen-casting code to a server;

a receiving unit 1302, configured to enable the screen-casting terminal to receive a security verification code pushed by a server, where the security verification code is pushed to the screen-casting terminal by the server when the first screen-casting request is received and it is determined that the user equipment has a security risk;

and the verification code display unit 1303 is configured to enable the screen projection terminal to display the security verification code, so that the server returns screen projection information for the screen projection terminal to the user equipment when receiving a second screen projection request which is initiated by the user equipment and contains the security verification code.

FIG. 14 is a schematic block diagram of an apparatus provided in an exemplary embodiment. Referring to FIG. 14, at the hardware level, the device includes a processor 1402, an internal bus 1404, a network interface 1406, a memory 1408, and a non-volatile storage 1410, although other hardware required for service may be included. The processor 1402 reads a corresponding computer program from the non-volatile memory 1410 into the memory 1408 and runs the computer program, thereby forming a projection device on a logical level. Of course, besides software implementation, the one or more embodiments in this specification do not exclude other implementations, such as logic devices or combinations of software and hardware, and so on, that is, the execution subject of the following processing flow is not limited to each logic unit, and may also be hardware or logic devices.

Referring to fig. 15, in a software implementation, the screen projection apparatus may include:

a screen-casting code display unit 1501, configured to enable a screen-casting terminal to display a device screen-casting code, where the device screen-casting code uniquely corresponds to the screen-casting terminal, so that a user device initiates a first screen-casting request including the device screen-casting code to a server;

a receiving unit 1502, configured to enable the screen-casting terminal to receive a security verification code pushed by a server, where the security verification code is pushed to the screen-casting terminal by the server when the server receives the first screen-casting request;

the verification code display unit 1503 is configured to enable the screen-projecting terminal to display the security verification code, so that the server returns screen-projecting information for the screen-projecting terminal to the user equipment when receiving a second screen-projecting request that is initiated by the user equipment and includes the security verification code.

Fig. 16 is a schematic block diagram of an apparatus provided in an exemplary embodiment. Referring to fig. 16, at the hardware level, the apparatus includes a processor 1602, an internal bus 1604, a network interface 1606, a memory 1608, and a nonvolatile memory 1610, but may also include hardware required for other services. The processor 1602 reads a corresponding computer program from the non-volatile memory 1610 into the memory 1608 and runs the computer program to form a projection device on a logical level. Of course, besides software implementation, the one or more embodiments in this specification do not exclude other implementations, such as logic devices or combinations of software and hardware, and so on, that is, the execution subject of the following processing flow is not limited to each logic unit, and may also be hardware or logic devices.

Referring to fig. 17, in a software implementation, the screen projection apparatus may include:

a first request unit 1701, configured to enable a user equipment to initiate a first screen projection request including a screen projection code of the user equipment to a server according to the screen projection code of the user equipment displayed by the screen projection terminal, so that the server determines the screen projection terminal based on the screen projection code of the user equipment, and pushes a security verification code to the screen projection terminal;

a second request unit 1702, configured to enable the user equipment to initiate a second screen projection request including the security verification code to the server according to the security verification code displayed by the screen projection terminal;

a receiving unit 1703, configured to enable the user equipment to receive screen projection information, which is returned by the server and is for the screen projection terminal, where the screen projection information is returned by the server in response to the second screen projection request.

Optionally, the first request unit 1701 obtains the device screen projection code by:

under the condition that the equipment screen projection code is displayed as a two-dimensional code, the user equipment is enabled to obtain the equipment screen projection code by identifying the two-dimensional code; or the like, or, alternatively,

under the condition that the equipment screen-casting code is displayed as a character string, acquiring and identifying the character string by the user equipment to obtain the equipment screen-casting code; or the like, or, alternatively,

and displaying an input interface by the user equipment, and acquiring the screen projection code of the equipment from the user input information received by the input interface.

Optionally, the second requesting unit 1702 obtains the security verification code by:

under the condition that the security verification code is displayed as a two-dimensional code, enabling the user equipment to obtain the security verification code by identifying the two-dimensional code; or the like, or, alternatively,

under the condition that the security verification code is displayed as a character string, enabling the user equipment to acquire the security verification code by collecting and identifying the character string; or the like, or, alternatively,

and displaying an input interface by the user equipment, and acquiring the security verification code from user input information received by the input interface.

The systems, devices, modules or units illustrated in the above embodiments may be implemented by a computer chip or an entity, or by a product with certain functions. A typical implementation device is a computer, which may take the form of a personal computer, laptop computer, cellular telephone, camera phone, smart phone, personal digital assistant, media player, navigation device, email messaging device, game console, tablet computer, wearable device, or a combination of any of these devices.

In a typical configuration, a computer includes one or more processors (CPUs), input/output interfaces, network interfaces, and memory.

The memory may include forms of volatile memory in a computer readable medium, Random Access Memory (RAM) and/or non-volatile memory, such as Read Only Memory (ROM) or flash memory (flash RAM). Memory is an example of a computer-readable medium.

Computer-readable media, including both non-transitory and non-transitory, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, 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 disc read only memory (CD-ROM), Digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic disk storage, quantum memory, graphene-based storage media or other magnetic storage devices, or any other non-transmission medium that can be used to store information that can be accessed by a computing device. As defined herein, a computer readable medium does not include a transitory computer readable medium such as a modulated data signal and a carrier wave.

It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

The foregoing description has been directed to specific embodiments of this disclosure. Other embodiments are within the scope of the following claims. In some cases, the actions or steps recited in the claims may be performed in a different order than in the embodiments and still achieve desirable results. In addition, the processes depicted in the accompanying figures do not necessarily require the particular order shown, or sequential order, to achieve desirable results. In some embodiments, multitasking and parallel processing may also be possible or may be advantageous.

The terminology used in the description of the one or more embodiments is for the purpose of describing the particular embodiments only and is not intended to be limiting of the description of the one or more embodiments. As used in one or more embodiments of the present specification and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

It should be understood that although the terms first, second, third, etc. may be used in one or more embodiments of the present description to describe various information, such information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of one or more embodiments herein. The word "if" as used herein may be interpreted as "at … …" or "when … …" or "in response to a determination", depending on the context.

The above description is only for the purpose of illustrating the preferred embodiments of the one or more embodiments of the present disclosure, and is not intended to limit the scope of the one or more embodiments of the present disclosure, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the one or more embodiments of the present disclosure should be included in the scope of the one or more embodiments of the present disclosure.

Claims

1. A screen projection method, comprising:

2. The method of claim 1, wherein the device screen projection code is generated by the screen projection terminal; or the screen projection codes of the equipment are pre-distributed to the screen projection terminal by the server.

3. The method of claim 1, wherein the server determines that the user equipment is at security risk if the user equipment does not satisfy at least one of the following screen projection conditions:

4. The method of claim 1, further comprising:

and the server returns local area network screen projection information aiming at the screen projection terminal to the user equipment under the condition that the user equipment has a security risk.

5. The method of claim 1, further comprising:

and the server counts the frequency of pushing the security verification code to the same screen projection terminal so as to limit the frequency to be not more than a second preset frequency.

6. The method of claim 1, further comprising:

and the server returns screen projection information aiming at the screen projection terminal to the user equipment under the condition that the user equipment does not have security risk.

7. The method of claim 1, further comprising:

and the server pushes the validity period corresponding to the security verification code to the screen projection terminal so that the screen projection terminal can display the security verification code within the validity period.

8. The method of claim 1, wherein the screen projection information comprises public network screen projection information.

9. The method of claim 1, further comprising:

the server receives a third screen projection request, wherein the third screen projection request comes from the associated equipment of the user equipment, and the third screen projection request comprises an equipment screen projection code corresponding to the screen projection terminal;

and the server returns screen projection information aiming at the screen projection terminal to the associated equipment.

10. The method of claim 9, wherein the associated device satisfies at least one of the following conditions:

the associated device is close to the geographical position of the user device;

11. A screen projection method, comprising:

12. A screen projection method, comprising:

13. A screen projection method, comprising:

14. A screen projection method, comprising:

15. The method of claim 14, wherein the user device obtains the device screen-cast code or the security verification code by:

under the condition that the equipment screen-projecting code or the safety verification code is displayed as a two-dimensional code, the user equipment obtains the equipment screen-projecting code or the safety verification code by identifying the two-dimensional code; or the like, or, alternatively,

under the condition that the equipment screen-projecting code or the safety verification code is displayed as a character string, the user equipment acquires and identifies the character string to obtain the equipment screen-projecting code or the safety verification code; or the like, or, alternatively,

the user equipment displays an input interface, and obtains the equipment screen projection code or the safety verification code from user input information received by the input interface.

16. A screen projection apparatus, comprising:

17. A screen projection apparatus, comprising:

18. A screen projection apparatus, comprising:

19. A screen projection apparatus, comprising:

20. A screen projection apparatus, comprising:

21. An electronic device, comprising:

a processor;

a memory for storing processor-executable instructions;

wherein the processor implements the method of any one of claims 1-11 by executing the executable instructions.

22. A computer-readable storage medium having stored thereon computer instructions, which, when executed by a processor, carry out the steps of the method according to any one of claims 1-11.

23. An electronic device, comprising:

a processor;

a memory for storing processor-executable instructions;

wherein the processor implements the method of claim 12 or 13 by executing the executable instructions.

24. A computer-readable storage medium having stored thereon computer instructions, which when executed by a processor, perform the steps of the method of claim 12 or 13.

25. An electronic device, comprising:

a processor;

a memory for storing processor-executable instructions;

wherein the processor implements the method of claim 14 or 15 by executing the executable instructions.

26. A computer-readable storage medium having stored thereon computer instructions, which when executed by a processor, perform the steps of the method of claim 14 or 15.