WO2023040524A1 - Multi-device screen projection or content continuation method, electronic devices and apparatus - Google Patents

Abstract

Embodiments of the present application disclose a screen projection continuation method, which is applied to a system comprising a mobile terminal, a first electronic device, and a second electronic device. The method comprises: the mobile terminal establishes a first screen projection connection with the first electronic device, and sends first screen projection information to the first electronic device, so that the first electronic device displays first screen projection content according to the first screen projection information; the second electronic device acquires a trigger event for continuous screen projection, wherein the trigger event for continuous screen projection is used to trigger the second electronic device to perform continuous screen projection; and the second electronic device discovers the first electronic device that is currently projecting a screen, and acquires the first screen projection information from the first electronic device, so that the second electronic device displays the first screen projection content according to the first screen projection information. Multi-device screen projection or content continuation may be achieved.

Description

Multi-device projection or content connection method, electronic equipment and device

Cross References to Related Applications

This application claims the priority of the Chinese patent filed on September 18, 2021 with the application number 202111101585.2 and the application name "Multi-device screen projection or content connection method, electronic equipment and device" submitted to the China Patent Office, the entire contents of which are incorporated by reference incorporated in this application.

technical field

The embodiments of the present application relate to the field of communication technology, and in particular, to a multi-device screen projection or content connection method, an electronic device, and a computer-readable storage medium.

Background technique

With the development of smart home, there are a variety of smart audio-visual devices used in the home. Among them, the terminal devices used to play content or run content are becoming more and more diverse. Among them, video playback between multiple terminal devices through screen projection has become a common way for users. . In addition, when the user switches the activity scene at home, it is necessary to screen projection or content continuation and switching of projection control between multiple terminal devices corresponding to multiple activity scenes, so as to achieve multi-terminal device projection through one screen projection operation Or the effect of content continuation. At present, corresponding to the switching of screen projection or content connection and projection control, when switching terminal device projection, it is necessary to disconnect the current projection control connection, identify the current projection or content, obtain the status of projection or content, The tedious steps of re-scanning and establishing projection control, re-acquiring projection or content, etc., have not yet optimized the power consumption and operation time of each terminal device, which has brought a certain degree of poor user experience.

Contents of the invention

Embodiments of the present application provide a screen projection or content continuation method, an electronic device, and a computer-readable storage medium. Using the embodiments of the present application, multi-device screen projection or automatic content continuation can be realized.

In the first aspect, the embodiment of the present application provides a screen projection connection method, which is applied to a system including a mobile terminal, a first electronic device, and a second electronic device, and the method includes the mobile terminal and the first electronic device The device establishes a first screen projection connection, and sends first screen projection information to the first electronic device, so that the first electronic device displays the first screen projection content according to the first screen projection information; the second electronic device The device acquires a trigger event for continuous screen projection, wherein the trigger event for continuous screen projection is used to trigger the second electronic device to perform continuous screen projection; the second electronic device discovers the first electronic device that is casting a screen , and acquire the first screen projection information from the first electronic device, so that the second electronic device displays the first screen projection content according to the first screen projection information. Using the screen projection connection method of the embodiment of the present application, the second electronic device can automatically or according to the user's operation trigger the continuous screen projection, and automatically find the first electronic device that is projecting the screen, and can also automatically obtain the screen projection from the first electronic device Information, so as to realize the automatic continuous projection of the screen, without the need to obtain the projection information through the mobile terminal, which simplifies the process of automatic continuous projection of the screen; in addition, the user does not need to realize the automatic continuous projection of the second electronic device by operating the mobile terminal screen, which greatly facilitates users.

According to the first aspect, in a possible implementation manner, the mobile terminal, the first electronic device, and the second electronic device are in the same local area network, and the second electronic device discovers all The first electronic device includes: the first electronic device broadcasts a first message in the local area network, so that the second electronic device determines according to the first message that the first electronic device is a screen-casting device ; In this way, the first electronic device realizes that the second electronic device discovers the first electronic device that is casting the screen through active notification. In a possible implementation manner, the first message may include screen casting information. Based on this design, the first electronic device actively broadcasts the screen-casting information, and the second electronic device determines that the first electronic device is the screen-casting device, so that the second electronic device does not need to perform discovery-related operations, which simplifies discovery process, improving efficiency.

Or, the second electronic device broadcasts a second message in the local area network; the first electronic device sends a third message to the second electronic device in response to the second message, so that the second electronic device According to the third message, it is determined that the first electronic device is the device that is projecting the screen; in this way, the second electronic device realizes that the second electronic device discovers the first electronic device that is projecting the screen by means of query and discovery. In a possible implementation manner, the second message may include a discovery request; the third message may include an existence notification. Based on such a design, the second electronic device can discover the first electronic device that is projecting the screen through an active notification method or a query discovery method, and communication can be quickly established.

According to the first aspect, in a possible implementation manner, obtaining the first screen projection information from the first electronic device by the second electronic device includes: sending a screen projection information acquisition request by the second electronic device ; The first electronic device sends the first screen projection information to the second electronic device in response to the screen projection information acquisition request, so that the second electronic device obtains the first screen projection information; or The first electronic device carries the first screen projection information in the first message or the third message, so that the second electronic device acquires the first screen projection information. In a possible implementation manner, the second message may include a screen projection information acquisition request, or the screen projection information acquisition request may be a message different from the second message. Based on this design, the second electronic device can acquire the first screen projection information from the first electronic device in multiple ways, without re-obtaining the screen projection information through the mobile terminal, which simplifies the communication process between multiple terminal devices, Improve the efficiency of screen projection connection.

According to the first aspect, in a possible implementation manner, the trigger event of the continuous screen projection includes one or more of the following items: the second electronic device is turned on; the second electronic device detects that the user Entering the detection range; the second electronic device obtains other detection or sensing devices to detect that the user enters the detection range; the second electronic device obtains other devices with wireless positioning functions to detect the mobile terminal enter the detection range; the second electronic device determines that the user has the intention to watch the second electronic device; the second electronic device determines that the user enters the room where the second electronic device is installed; the second The electronic device receives an instruction message instructing the second electronic device to continue screen projection. Based on this design, the ways of triggering continuous screen projection can include active triggering or passive triggering, among which the user can make the second electronic device perform continuous screen projection through passive triggering according to personal wishes, providing user options and Operation; the second electronic device can also detect the user's behavior or posture through active triggering, and automatically perform continuous screen projection, so that the user does not need to operate, and can automatically perform continuous screen projection according to the user's dynamics, which improves the user experience. user experience.

According to the first aspect, in a possible implementation manner, the first screen projection information includes first screen projection resource information and first screen projection state information, and the first electronic device according to the first screen projection information Displaying the first screen projection content includes: the first electronic device obtains the first screen projection content from a server according to the first screen projection resource information, so that the first electronic device uses the first screen projection The screen projection state indicated by the state information displays the first screen projection content; the second electronic device displays the first screen projection content according to the first screen projection information, including: the second electronic device according to the The first screen projection resource information is to obtain the first screen projection content from a server, so that the second electronic device displays the first screen projection content in a screen projection state indicated by the first screen projection state information. Based on this design, the first electronic device and the second electronic device can obtain the content of the screen projection based on the implementation of DLNA, and the second electronic device does not need to obtain the content of the first screen projection from the mobile terminal, which simplifies the communication process and improves the Communication efficiency; in addition, the second electronic device can automatically obtain the first screen projection content from the server according to the first screen projection resource information, without the need for the user to operate the mobile terminal, the first electronic device and the second electronic device, which is convenient for the user; moreover, The second electronic device displays the content of the first screen projection in the first screen projection state, so that the second electronic device can have better continuity with the first electronic device when the screen projection is continued, and the user does not need to re-operate to continue Watching the first screencast content provides an excellent user experience.

According to the first aspect, in a possible implementation manner, the first screen projection resource information includes a Uniform Resource Identifier URI, and the first screen projection state information includes one of playback progress, playback volume, and playback status. or more, the playback state includes one or more of play, pause, double speed, full screen, and split screen. Based on this design, the second electronic device can continue to cast the first screen projection content according to the specific screen projection state, so that the user can obtain a better continuous experience when switching electronic devices to continue browsing or watching the first screen projection content .

According to the first aspect, in a possible implementation manner, the terminal device obtains the networking information of the second electronic device; the terminal device disconnects the first electronic device from the first electronic device. Screen projection connection, and establish a second screen projection connection with the second electronic device according to the networking information. Based on this design, after the second electronic device realizes the screen projection connection, the screen projection control link between the mobile terminal and the first electronic device can be transferred to the second electronic device, and a new screen projection is established between the mobile terminal and the second electronic device The control link, so that the user can control the screen projection content displayed by the second electronic device through the mobile terminal, or the user can directly operate the second electronic device to control the screen projection content displayed, thus providing the user with various Control mode to enhance user experience.

According to the first aspect, in a possible implementation manner, after the terminal device establishes the second screen projection connection with the second electronic device, the method further includes: sending the second electronic device to the The first electronic device sends the second screen projection information, where the second screen projection information is different from the first screen projection information. In a possible implementation manner, the second screen projection information may include: second screen projection resource information different from the first screen projection resource information, and/or, different from the first screen projection state Information about the second screen projection status information. Based on this design, after the screen projection control link is transferred to the second electronic device, the second electronic device can synchronize the screen projection information to the first electronic device or to the mobile terminal; when the second screen projection information is sent by the mobile terminal Triggered by the terminal, the second electronic device can only synchronize the screen projection information to the first electronic device, so as to keep the screen projection status synchronization between multiple terminal devices and provide users with continuity of browsing and viewing among multiple terminal devices.

According to the first aspect, in a possible implementation manner, the first electronic device sends second screen projection information to the second electronic device, where the second screen projection information is different from the first projection screen information. screen information. Based on this design, after the second electronic device realizes the screen projection connection, the mobile terminal can maintain the screen projection control link with the first electronic device, and the mobile terminal can update the screen projection content, or When the first electronic device updates the screen projection content, the first electronic device is synchronized to the second electronic device, so as to keep the screen projection status synchronization between multiple terminal devices and provide users with browsing and Continuity of viewing.

According to the first aspect, in a possible implementation manner, the displaying the first screen projection content by the second electronic device according to the first screen projection information includes: the second electronic device sends whether to continue projection If an affirmative response is received in response to the inquiry message, the second electronic device displays the first screen projection content according to the first screen projection information. Based on such a design, the second electronic device can interact with the user to determine whether to display the first screen projection content, the second electronic device actively asks the user, and the user can choose whether to continue the screen projection by operating the electronic device according to his wishes, thereby Provide users with a real-time sense of participation, and provide users with more choices to improve user participation and experience.

According to the first aspect, in a possible implementation manner, the first screen projection information includes the first screen projection content. In a possible implementation, when the mirroring screen projection mode is used between multiple terminal devices, the first screen projection information may include the first screen projection content, and the mobile terminal may directly upload the first electronic device and the second electronic device Provide screencast content. Based on such a design, the first electronic device and the second electronic device can obtain the screen projection content based on the realization of the mirror data stream, without extracting the screen projection content from the server, thereby simplifying the communication process and improving communication efficiency.

In the second aspect, the embodiment of the present application also provides a screen projection connection method, which is applied to the first electronic device, and the method includes: the first electronic device establishes a first screen projection connection with the mobile terminal, and the mobile terminal Acquire the first screen projection information, so that the first electronic device displays the first screen projection content according to the first screen projection information; the first electronic device provides the first screen projection information to the second electronic device, so The first screen projection information is used by the second electronic device to display the first screen projection content.

With reference to the second aspect, in a possible implementation manner, the mobile terminal, the first electronic device, and the second electronic device are in the same local area network, and when the first electronic device communicates with the second electronic device Before providing the first screen projection information, the method further includes: the first electronic device broadcasts a first message in the local area network, and the first message carries an indication that the first electronic device is casting a screen information;

The first electronic device providing the first screen projection information to the second electronic device includes: the first electronic device responds to the screen projection information acquisition request sent by the second electronic device, and provides the second electronic device with The device sends the first screen projection information.

With reference to the second aspect, in a possible implementation manner, the mobile terminal, the first electronic device, and the second electronic device are in the same local area network, and the first electronic device provides The first screen projection information includes: the first electronic device broadcasting the first screen projection information in the local area network.

With reference to the second aspect, in a possible implementation manner, the mobile terminal, the first electronic device, and the second electronic device are in the same local area network, and when the first electronic device communicates with the second electronic device Before providing the first screen projection information, the method further includes: the first electronic device receiving a second message broadcast by the second electronic device in the local area network.

With reference to the second aspect, in a possible implementation manner, the first screen projection information includes first screen projection resource information and first screen projection status information, and the first electronic device Displaying the first screen projection content includes: the first electronic device obtains the first screen projection content from a server according to the first screen projection resource information, so that the first electronic device uses the first screen projection The screen projection state indicated by the state information displays the first screen projection content.

With reference to the second aspect, in a possible implementation manner, the first screen projection resource information includes a uniform resource identifier URI, and the first screen projection state information includes one of playback progress, playback volume, and playback status. or more, the playback state includes one or more of play, pause, double speed, full screen, and split screen.

With reference to the second aspect, in a possible implementation manner, the method further includes: the first electronic device acquires networking information of the second electronic device, and sends the networking information to the terminal device .

With reference to the second aspect, in a possible implementation manner, the method further includes: the first electronic device sending second screen projection information to the second electronic device, where the second screen projection information is different from on the first screen projection information.

With reference to the second aspect, in a possible implementation manner, the first screen projection information includes first screen projection content.

In the third aspect, the embodiment of the present application also provides an electronic device, the electronic device includes a memory and a processor, and the processor is used to implement the screen projection connection as described above when executing the computer program stored in the memory method.

In a fourth aspect, the embodiments of the present application further provide a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the screen projection connection method as described above is implemented.

In the fifth aspect, the embodiments of the present application further provide a method for continuing screen projection, which is applied to a second electronic device, and the method includes: the second electronic device acquires a trigger event for continuing screen projection, wherein the continuous projection The trigger event of the screen is used to trigger the second electronic device to perform continuous screen projection; the second electronic device finds the first electronic device that is casting the screen; the second electronic device obtains the first screen projection information, so that the second electronic device displays the first screen projection content according to the first screen projection information.

With reference to the fifth aspect, in a possible implementation manner, the second electronic device, the mobile terminal, and the first electronic device are in the same local area network, and the second electronic device discovers that all The first electronic device includes: the second electronic device obtains the first message broadcast by the first electronic device in the local area network, so that the second electronic device determines the first message according to the first message The electronic device is a device that is casting a screen; or, the second electronic device broadcasts a second message in the local area network, and acquires a third message sent by the first electronic device in response to the second message, so that The second electronic device determines, according to the third message, that the first electronic device is a device that is currently projecting a screen.

With reference to the fifth aspect, in a possible implementation manner, obtaining the first screen projection information from the first electronic device by the second electronic device includes: sending a screen projection information acquisition request by the second electronic device ; The second electronic device receives the first screen projection information sent by the first electronic device to the second electronic device in response to the screen projection information acquisition request; or, the second electronic device carries The first screen projection information is obtained from the first message containing the first screen projection information; or, the second electronic device obtains the first screen projection information from the third message carrying the first screen projection information The first screen projection information.

With reference to the fifth aspect, in a possible implementation manner, the trigger event of the continuous screen projection includes one or more of the following items: the second electronic device is turned on; the second electronic device detects that the user Entering the detection range; the second electronic device obtains other detection or sensing devices to detect that the user enters the detection range; the second electronic device obtains other devices with wireless positioning functions to detect the mobile terminal enter the detection range; the second electronic device determines that the user has the intention to watch the second electronic device; the second electronic device determines that the user enters the room where the second electronic device is installed; the second The electronic device receives an instruction message instructing the second electronic device to continue screen projection.

With reference to the fifth aspect, in a possible implementation manner, the first screen projection information includes first screen projection resource information and first screen projection state information, and the second electronic device Displaying the first screen projection content includes: the second electronic device obtaining the first screen projection content from a server according to the first screen projection resource information, so that the second electronic device uses the first screen projection content The screen projection state indicated by the screen projection state information displays the first screen projection content.

With reference to the fifth aspect, in a possible implementation manner, the first screen projection resource information includes a uniform resource identifier URI, and the first screen projection state information includes one of playback progress, playback volume, and playback status. or more, the playback state includes one or more of play, pause, double speed, full screen, and split screen.

With reference to the fifth aspect, in a possible implementation manner, the method further includes: sending, by the second electronic device, networking information of the second electronic device to the first electronic device; The device establishes a second screen projection connection with the terminal device; the second electronic device acquires second screen projection information different from the first screen projection information from the terminal device through the second screen projection connection, so that The second electronic device displays second screen projection content according to the second screen projection information.

With reference to the fifth aspect, in a possible implementation manner, the method further includes: the second electronic device sending the second screen projection information to the first electronic device.

With reference to the fifth aspect, in a possible implementation manner, the method further includes: the second electronic device acquires second screen projection information sent by the first electronic device, where the second screen projection information It is different from the first screen projection information.

With reference to the fifth aspect, in a possible implementation manner, the second electronic device displays the first screen projection content according to the first screen projection information, including: the second electronic device sends whether to continue projection If an affirmative response is received in response to the inquiry message, the second electronic device displays the first screen projection content according to the first screen projection information.

With reference to the fifth aspect, in a possible implementation manner, the first screen projection information includes the first screen projection content.

In the sixth aspect, the embodiments of the present application also provide an electronic device, the electronic device includes a memory and a processor, and the processor is configured to implement the screen projection connection method as described when executing the computer program stored in the memory .

In a seventh aspect, the embodiments of the present application further provide a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the above-mentioned screen projection connection method is implemented.

In addition, the technical effect brought by any possible design method in the second aspect to the seventh aspect can be referred to the technical effect brought by different design methods related to the screen projection connection method, and will not be repeated here.

In the eighth aspect, the embodiments of the present application also provide a content connection method, which is applied to a system including a first electronic device and a second electronic device, and the method includes: the first electronic device runs and displays the first content The second electronic device acquires a trigger event of content connection, wherein the content connection trigger event is used to trigger the second electronic device to perform content connection; the second electronic device finds that all the first electronic device, and acquire first running information from the first electronic device, so that the second electronic device runs and displays the first content according to the first running information. In a possible implementation manner, the first content run by the first electronic device may include running an application program (Application program, APP). By adopting the screen projection connection method of the embodiment of the present application, the second electronic device can automatically or according to the user operation trigger content connection, and automatically find the first electronic device that is running the first content, and can also automatically obtain the running content from the first electronic device. Information, so as to realize the automatic content connection, provide the user with the continuity of browsing or watching the first content, and improve the user experience; in addition, the user does not need to operate to realize the automatic content connection of the second electronic device, which greatly facilitates the user.

With reference to the eighth aspect, in a possible implementation manner, the first electronic device and the second electronic device are in the same local area network, and the second electronic device discovers that the first electronic device that is running the first content The electronic device includes: the first electronic device broadcasts a first message in the local area network, so that the second electronic device determines according to the first message that the first electronic device is a device running the first content; In this way, the first electronic device enables the second electronic device to discover the first electronic device that is running the first content through active notification. In a possible implementation manner, the first message may include running information. Based on this design, the first electronic device actively broadcasts the running information, and the second electronic device determines that the first electronic device is running the first content, so that the second electronic device does not need to perform related operations of discovery, which simplifies The discovery process improves efficiency.

Or, the second electronic device broadcasts a second message in the local area network; the first electronic device sends a third message to the second electronic device in response to the second message, so that the second electronic device According to the third message, it is determined that the first electronic device is the device running the first content; thus, the second electronic device discovers the first electronic device running the first content by querying and discovering. In a possible implementation manner, the second message may include a discovery request; the third message may include an existence notification. Based on such a design, the second electronic device can discover the first electronic device running the first content through an active notification method or a query discovery method, and communication can be quickly established.

With reference to the eighth aspect, in a possible implementation manner, the second electronic device acquiring first running information from the first electronic device includes: the second electronic device sending a running information acquisition request; An electronic device sends the first running information to the second electronic device in response to the running information acquisition request, so that the second electronic device acquires the first running information; or, the first electronic device The first running information is carried in the first message or the third message, so that the second electronic device acquires the first running information. Based on such a design, the second electronic device can acquire the first running information from the first electronic device in multiple ways, without user operation to obtain the running information, which simplifies the user operation process and improves user experience.

With reference to the eighth aspect, in a possible implementation manner, the content connection trigger event includes one or more of the following items: the second electronic device is turned on; the second electronic device detects that a user enters Detection range; the second electronic device obtains other detection or sensing equipment to detect that the user enters the detection range; the second electronic device obtains other devices with wireless positioning functions to detect that the mobile terminal enters The detection range; the second electronic device determines that the user has the intention to watch the second electronic device; the second electronic device determines that the user enters the room where the second electronic device is installed; the second electronic device The device receives an indication message instructing the second electronic device to continue content. Based on this design, the ways of triggering content continuation may include active triggering or passive triggering and other ways, wherein the user can make the second electronic device carry out content continuation through passive triggering according to personal wishes, providing user selection and operation; The second electronic device can also detect the user's behavior or posture through active triggering, and automatically perform content connection, so that the user does not need to operate, and can automatically perform continuous screen projection according to the user's dynamics, which improves user experience.

With reference to the eighth aspect, in a possible implementation manner, the first running information includes the first content information, the first display interface, and the first running state information, and the second electronic device Running and displaying the first content with the running information includes: the second electronic device runs in the running state indicated by the first running state information corresponding to the first content information according to the first content information and the first running state information the first content, and display a first display interface corresponding to the first content. Based on this design, the second electronic device can continue to run the first content according to the specific operating state of the first electronic device, so that the second electronic device can have a better continuation of the content with the first electronic device. It is flexible and does not require users to re-operate to continue browsing or watching the first content, providing an excellent user experience.

With reference to the eighth aspect, in a possible implementation manner, the first content information includes a running application, the first display interface includes an interface of the application, and the first running status information includes running of the application. state. Based on this design, the second electronic device can continue to run the first content according to the specific operating state of the first electronic device in accordance with the first content, so that the second electronic device can at least run the application program, the interface of the application program, and the interface of the application program. Realize content continuation in running state.

With reference to the eighth aspect, in a possible implementation manner, after the second electronic device runs and displays the first content according to the first running information, the first electronic device continues to run and display the the first content; or, the first electronic device stops running and displays the first content. Based on such a design, after the second electronic device performs content connection, the first electronic device can continue or stop running the first content, so as to provide users with selective operations among multiple devices.

Description of drawings

FIG. 1 is an application environment architecture diagram of a method for screen projection and connection provided by an embodiment of the present application.

FIG. 2 is a flow chart of a screen projection connection method provided by an embodiment of the present application.

FIG. 3 is a schematic diagram of an application scenario of a screen projection connection method provided by an embodiment of the present application.

Fig. 4 is a schematic diagram of an interface of an electronic device provided by an embodiment of the present application.

FIG. 5 is a schematic diagram of an application scenario of a screen projection connection method provided by another embodiment of the present application.

FIG. 6 is a schematic diagram of an application scenario of screen projection control transfer provided by a screen projection connection method according to an embodiment of the present application.

FIG. 7 is a schematic diagram of an application scenario of synchronous screen projection information of a screen projection continuation method provided by an embodiment of the present application.

Fig. 8 is a flow chart of a content continuation method provided by an embodiment of the present application.

Fig. 9 is a schematic diagram of an electronic device provided by an embodiment of the present application.

Description of main component symbols

first space	12
second space	14
mobile terminal	20
First Electronics	30
second electronic device	40
UI	42
dialog box	44
first icon	46
second icon	48
server	50
Electronic equipment	60
memory	61
processor	62
display module	63
communication module	64
Computer program	65

The following specific embodiments will further illustrate the present application in conjunction with the above-mentioned drawings.

Detailed ways

In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments It is a part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

The term "and/or" in this application is an association relationship describing associated objects, indicating that there may be three relationships, for example, A and/or B, which may mean: A exists alone, A and B exist simultaneously, and There are three cases of B. The symbol "/" in this document indicates that the associated object is an or relationship, for example, A/B indicates A or B.

In the embodiment of the present application, terms such as "first" and "second" are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance, nor can they be understood as indicating or implying order. For example, the first application, the second application, etc. are used to distinguish different applications, rather than to describe the specific order of applications, and the features defined as "first" and "second" may explicitly or implicitly include one or More of this feature.

In the description of the embodiments of the present application, words such as "exemplary" or "for example" are used as examples, illustrations or descriptions. Any embodiment or design scheme described as "exemplary" or "for example" in the embodiments of the present application shall not be interpreted as being more preferred or more advantageous than other embodiments or design schemes. Rather, the use of words such as "exemplary" or "such as" is intended to present related concepts in a concrete manner.

Please refer to FIG. 1 , which is a schematic diagram of an application environment architecture of a screen projection and connection method provided by an embodiment of the present application.

The screen projection connection method can be applied in an environment composed of multiple terminal devices. For example, a home floor plan as shown in FIG. 1 may include a plurality of separated spaces/rooms, for example, a first space 12 and a second space 14 . In some embodiments, the first space 12 can be but not limited to a living room, and the second space 14 can be but not limited to a bedroom. It can be understood that the home environment also includes more separated spaces. , such as balconies, kitchens, bathrooms, etc., are not listed here.

The screen projection connection method can be based on the Digital Living Network Alliance (Digital Living Network Alliance, DLNA) projection technology, and is applied between multiple terminal devices. In some implementation manners, the multiple terminal devices include at least a mobile terminal 20 , a first electronic device 30 and a second electronic device 40 . The mobile terminal 20 may be, but not limited to, a smart phone, a tablet computer, a portable computer, a personal digital assistant (Personal Digital Assistant, PDA), a game console, a smart wearable device or other mobile electronic devices with wireless communication functions. The first electronic device 30 and the second electronic device 40 may be, but not limited to, a television, an interactive network television (Internet Protocol Television, IPTV), a video player, a display, a smart TV, a large-screen device, a tablet computer or Other electronic devices with video playback function. In some implementations, the first electronic device 30 can be placed in the first space 12, and the second electronic device 40 can be placed in the second space 14. It can be understood that the first electronic device 30 and the second electronic device 40 may have larger display screens than the mobile terminal 20, so as to provide users with a better visual experience.

In some embodiments, the mobile terminal 20, the first electronic device 30 and the second electronic device 40 can communicate with each other through a network, for example, communicate with each other through a local area network (Local Area Network, LAN). The servers 50 communicate with each other. The network may be, but not limited to, one or a combination of data transmission methods of WiFi, optical fiber communication or cellular communication. In some embodiments, the server 50 may be, but not limited to, a cloud database, providing resource or data query and acquisition.

In some embodiments, in order to realize the screen projection connection, that is, after the mobile terminal 20 establishes a screen projection connection with the first electronic device 30, the mobile terminal 20 provides screen projection content or provides screen projection resource information, and the first electronic device 30 to display or play the projection content corresponding to the projection content or the projection resource information, switch to the second electronic device 40 to continue to display or play the projection content or the projection content corresponding to the projection resource information, the user needs to first disconnect the mobile Screen projection connection between the terminal 20 and the first electronic device 30, and then re-find the screen projection content and locate the progress of the screen projection content through the mobile terminal 20, and then re-scan the terminal equipment that can be connected through the mobile terminal 20, and the mobile terminal 20 selects and The second electronic device 40 establishes a screen projection connection, and finally provides the screen projection content or screen projection resource information through the mobile terminal 20, and the second electronic device 40 displays or plays the screen projection content corresponding to the screen projection content or screen projection resource information. Screencasting can be completed. The mobile terminal 20, the first electronic device 30 and the second electronic device 40 may be different terminal devices. The implementation of the screen projection and connection method has a complicated operation process, and the power consumption of each terminal device and the duration of the operation process are not optimized enough, resulting in poor user experience.

In view of this, the embodiment of the present application provides a screen projection connection method, the mobile terminal 20 establishes a first screen projection connection with the first electronic device 30, and sends the first screen projection information to the first electronic device 30, so that the first electronic device 30 The device 30 displays the content of the first screen projection according to the first screen projection information; the second electronic device 40 obtains a trigger event of the continuous screen projection, wherein the trigger event of the continuous screen projection is used to trigger the second electronic device 40 Perform continuous screen projection; the second electronic device 40 finds the first electronic device 30 that is projecting the screen, and obtains the first screen projection information from the first electronic device 30, so that the second electronic device 40 according to the first screen projection The information displays the content of the first screen projection, so as to realize continuous screen projection between multiple terminal devices, so that the user can switch between multiple terminal devices for continuous screen projection, which is convenient for the user to control the screen projection when the scene is switched. The screen projection information is synchronized between multiple terminal devices, and the playback of the screen projection content is automatically continued, providing users with a better viewing experience.

Next, the screen projection connection method provided by the embodiment of the present application will be described in detail with reference to the accompanying drawings.

Please refer to FIG. 2 , which is a flowchart of a screen projection connection method provided by an embodiment of the present application. Exemplarily, the screen projection continuation method may include the following steps.

Step S211 : the mobile terminal 20 establishes a first screen projection connection with the first electronic device 30 .

In some embodiments, the mobile terminal 20 provides the first screen projection information to the first electronic device 30, and the first screen projection information may include first screen projection resource information, and the first electronic device 30 may A screen projection resource information acquires the screen projection content, and can display the screen projection content, and the mobile terminal 20 can control the screen projection content of the first electronic device 30 . For example, when the user uses the mobile terminal 20 to browse content in the first space 12, such as playing video content, the mobile terminal 20 provides the first screen projection resource information corresponding to the screen projection content, and the first electronic device 30 according to the first A screen projection resource information acquires the screen projection content and displays or plays the screen projection content. For example, the mobile terminal 20 provides the first screen projection resource information corresponding to the video content, and the first electronic device 30 obtains the screen projection resource information according to the first screen projection resource information. The video content and play the video content, so as to obtain a better visual experience. In another embodiment, the screen projection content is not limited to playing video content, and may also be playing audio content or other displayable browsing content.

In some implementation manners, the mobile terminal 20 can establish a screen projection connection with the first electronic device 30 through DLNA, and the mobile terminal 20 can send the first screen projection resource information to the first electronic device 30, so The first screen projection resource information includes at least the network address of the playing content, such as a Uniform Resource Identifier (Uniform Resource Identifier, URI) address, and the first electronic device 30 can obtain the content from the server 50 according to the network address. play content, so that the first electronic device 30 and the mobile terminal 20 can display the play content (that is, screen projection content) synchronously, or, after the first electronic device 30 starts to display the play content, the The mobile terminal 20 stops displaying the playing content. Optionally, the mobile terminal 20 can perform screen projection control on the first electronic device 30, for example, the mobile terminal 20 can perform, for example, play, pause, stop, fast Forward/rewind, adjust volume, full screen display, split screen display, adjust display ratio and other screen projection controls. Therefore, the user can conveniently use the mobile terminal 20 that is easy to carry and operate to remotely control the projected content of the first electronic device 30 to obtain a better operating experience. In some embodiments, the first screen projection resource information may also include first screen projection state information, which is used to carry the above screen projection control information generated by the mobile terminal 20, so that the first electronic device 30 according to the first screen projection state The information displays the playing content. In some implementation manners, the screen projection control can be realized through a control link established by a Simple Object Access Protocol (SOAP) connected to a DLNA-based Transmission Control Protocol (Transmission Control Protocol, TCP).

In addition, the first electronic device 30 can also directly obtain user operations to control the content on the screen, such as playing, pausing, stopping, fast forward/rewind, adjusting volume, full-screen display, split-screen display, and adjusting the display ratio. wait. In some implementations, the user can directly operate the first electronic device 30 to control the projected content, such as operating the display interface of the first electronic device 30 or operating a remote control matched with the first electronic device 30 .

Step S212: Trigger the screen projection connection.

In some implementations, when the user moves from the first space 12 where the first electronic device 30 is located to another space, such as the second space 14 where the second electronic device 40 is located, the second electronic device 40 acquires a trigger event . The triggering event may include, but not limited to, any one or more of the following methods: starting the second electronic device 40, the second electronic device 40 detecting that the user enters the detection range, a device with detection or sensing function detecting It is detected that the user enters the detection range, the device with wireless positioning function detects that the mobile terminal 20 enters the detection range, the second electronic device 40 determines that the user has the intention to watch the second electronic device 40, the second electronic device 40 determines The user enters a room (such as the second space 14 ) where the second electronic device 40 is installed, and the second electronic device 40 receives an instruction message instructing the second electronic device 40 to continue screen projection.

In some implementations, when the user activates the second electronic device 40 by switching the power supply, etc., the second electronic device 40 detects a trigger event for screen projection connection; or, the second electronic device 40 is equipped with a camera or When the sensor element detects that the user enters the detection range (such as the shooting range of the camera, or the sensor element detects that the user enters the range of the second space 14), the second electronic device 40 detects it as a trigger event for the screen projection connection; and Or, when a device with a detection or sensing function, such as an infrared sensor, a photoelectric sensor, a thermal detector, a camera device, a millimeter-wave radar, etc., detects that the user enters the detection range (such as the range of the second space 14) A trigger event; or, when a device with a wireless positioning function, such as an indoor wireless base station, a wireless positioning tag, etc., detects that the user carries the mobile terminal 20 into the detection range (such as the range of the second space 14), it is a trigger event, Wherein the wireless positioning function can locate the mobile terminal 20 through positioning technology, such as ultra wide band (UWB) positioning technology; video, sensor data, etc.), judging that the user currently has the intention to watch the second electronic device 40 is a trigger event for continuous screen projection; or, the second electronic device 40 or other electronic devices are installed with map applications. When the terminal 20 enters the room where the second electronic device 40 is installed (such as the second space 14), the second electronic device 40 or other electronic devices can recognize that the position of the mobile terminal 20 is in the second space 14 as a trigger event; or The user actively triggers the continuous screen projection operation through the interface of the second electronic device 40 to form an instruction message to the second electronic device 40, and when the second electronic device 40 receives the instruction message for continuous screen projection, it is a trigger event.

In some implementations, the device with detection or sensing function or the device with wireless positioning function sends the trigger event to the second electronic device 40, and the second electronic device 40 obtains the trigger event of screen projection connection , and continue screen projection in response to the trigger event. There are many ways to trigger the screen projection connection. The user can actively trigger the screen projection connection by starting the second electronic device 40, or the second electronic device 40 is equipped with a camera or a sensor element to detect the user's entry into the detection mode. or the device with detection or sensing function detects that the user enters the detection range and triggers the screen projection connection, or the device with wireless positioning function detects that the mobile terminal 20 enters the detection range and triggers The screen projection is continued, or the second electronic device 40 determines that the user has the intention to watch the second electronic device 40, or the second electronic device 40 determines that the user enters the room where the second electronic device 40 is installed, so that the user does not need any operation. Perform screen projection and connection to provide user convenience. In other implementation manners, the triggering event may also include other triggering manners, which are not listed here. In some embodiments, the user enters the bedroom (second space 14) from the living room (first space 12), and wishes to continue playing the large screen in the living room (first electronic device 30) through the large screen in the bedroom (second electronic device 40). The played screen projection content can trigger the screen projection continuation, so that the user can continue to watch the same projection screen content through the large screen in the bedroom after entering the bedroom, so that the user can obtain a better visual experience.

Optionally, in some implementations, the above-mentioned triggering conditions are, for example, the second electronic device 40 detects that it is activated, the second electronic device 40 detects that the user enters the detection range, a device with a detection or sensing function detects It is detected that the user enters the detection range or/and the device with the wireless positioning function detects that the mobile terminal 20 enters the detection range. During implementation, one or more trigger conditions in these trigger conditions are combined as The trigger condition for screencasting connection.

Please refer to FIG. 3 , which is a schematic diagram of an application scenario of a screen projection connection method provided by an embodiment of the present application. The mobile terminal 20 establishes a screen projection connection with the first electronic device 30, and establishes a control link. The mobile terminal 20 provides resource information of the screen projection content, and the first electronic device 30 obtains the resource information of the screen projection content, and according to The resource information of the screen projection content is acquired from the server 50, and the screen projection content is displayed or played. When the mobile terminal 20 moves to the space corresponding to the second electronic device 40 and triggers the screen projection connection, a new screen projection connection can be established between the mobile terminal 20 and the second electronic device 40, and the second electronic device 40 can perform projection. screen continues.

Step S213: discovering the device that is casting the screen.

In some implementation manners, the discovery of the device that is casting the screen may include active notification and inquiry of a discovery method.

Wherein, the active notification method may be that the first electronic device 30 accepting screen projection broadcasts its screen projection information through a local area network. In some implementations, the first electronic device 30 can extend the preset message field through the underlying discovery protocol of DLNA, such as Simple Service Discovery Protocol (SSDP), for example, expand the message that is being projected field, broadcasting the screencasting information on the LAN. Other electronic devices that acquire the trigger event, such as the second electronic device 40, receive the screen-casting information broadcast by the first electronic device 30 to learn that the first electronic device 30 is screen-casting. In some implementation manners, the message after expanding the field of the message being projected can be:

NOTIFY*HTTP/1.1

HOST:239.255.255.250:1900

CACHE-CONTROL:max-age=seconds until advertisement expires

LOCATION: URL for UPnP description for root device

NT: search target

NTS:ssdp:alive

USN: advertisement UUID

ISPLAYING: YES/NO

Among them, HOST can be the message field that is set to reserve the multicast address and port for the protocol; CACHE-CONTROL can be the message field that formulates the survival time of the notification message; LOCATION can be the message field that indicates the URL address that contains the root device description; NT can be the message field indicating the service type; NTS can be the message field indicating the existence notification message; USN can be the uniform service name indicating different services, and the message field indicating the same type of service capability; the ISPLAYING field can be extended In the message field of screen casting, when the ISPLAYING field is YES, it can indicate that the device is currently casting a screen, and when the ISPLAYING field is NO, it can indicate that the device is not currently casting a screen.

The query discovery method may be that the second electronic device 40 that acquires the trigger event finds whether there is a device that is casting a screen in the local area network. In some implementations, the second electronic device 40 can extend the preset message field through the underlying discovery protocol of DLNA, such as SSDP, for example, expand the message field of the screen being projected, and broadcast a discovery request in the local area network to discover the current The device that is casting the screen, when there is a device that is casting the screen, such as the first electronic device 30, the device that is casting the screen (such as the first electronic device 30) sends an existence notification to the broadcast address, that is, the second electronic device 40 , the second electronic device 40 obtains the presence notification to know that the first electronic device 30 is casting a screen. In some implementation manners, the message after expanding the field of the message being projected can be:

M-SEARCH*HTTP/1.1

HOST:239.255.255.250:1900

MAN:ssdp:discover

MX:seconds to delay response

ST: search target

ISPLAYING: YES/NO

Among them, HOST is the message field that is set to reserve the multicast address and port for the protocol; MAN is the message field that sets the type of protocol query; MX is the message field that sets the longest waiting time for the device to respond; ST is the content and meaning and Query the message field with the same field as the corresponding field in the request; the ISPLAYING field can be an extended message field that is currently casting a screen. When the ISPLAYING field is YES, it can indicate that the device is currently casting a screen. When the ISPLAYING field is NO, It can indicate that the device is not currently casting a screen.

The second electronic device 40 and the first electronic device 30 can discover the device that is projecting the screen through an active notification method or a query discovery method, and communication can be quickly established.

Step S214: Interact with the first screen projection information.

In some implementation manners, the first electronic device 30 may send the first screen projection information to the second electronic device 40 . In some implementations, the first screen projection information may also include first screen projection resource information and first screen projection status information, and the first screen projection status information may include but not limited to playback progress, playback volume, and playback Status (may include but not limited to play, pause, multiplier, full screen, split screen), etc. In addition, the first electronic device 30 may also send the networking information of the first electronic device 30 to the second electronic device 40 at the same time, such as IP address and network port. In some implementations, the first electronic device 30 can transmit the message field by extending the message field of the continuous casting protocol of DLNA, such as expanding the message field corresponding to the network address, playback progress, playback volume, and playback status of the projected screen content. Casting information. The first electronic device 30 interacts with the second electronic device 40 with the first screen projection information, so that the second electronic device 40 can obtain the first screen projection resource information (which can correspond to the projection content) and the first screen projection state information (can correspond to obtain the current screen projection state of the first electronic device 30), without reacquiring the screen projection content and identifying the current state of the screen projection content through the mobile terminal 20, which simplifies the communication process between multiple terminal devices and improves the screen projection process. Successive efficiency.

In some implementations, when a device that is casting a screen is found through the active notification method, the second electronic device 40 may request the current screen projection information from the first electronic device 30, and the first electronic device 30 may respond to the The above request sends screen projection information to the second electronic device 40 . Wherein, the message for the second electronic device 40 to request screen projection information from the first electronic device 30 may be:

GET/ContinuePlay.xml HTTP/1.1

Accept: text/xml, application/xml

User-Agent: Mozilla/4.0 (compatible; UPnP/1.0; Windows NT/5.1)

Host: 192.168.1.1:2800

Connection: Keep-Alive

Cache-Control: no-cache

Pragma: no-cache

The message in which the first electronic device 30 sends screen projection information to the second electronic device 40 in response to the request may be:

HTTP/1.1200 OK

Server:Unknown/0.0 UPnP/1.0 Conexant-EmWeb/R6_1_0

Connection:closeContent-Type:text/xml

Expires: Thu,01 Jan 1970 00:00:00 GMT

Cache-Control: no-cache Pragma: no-cache

<s:Envelope>

<s:Body>

<u:ContinuePlay>

<ContinueURI>Continue video link address</ContinueURI>

<ContinueSeek>Continue video progress</ContinueSeek>

<ContinueVolume>Continue Video Volume</ContinueVolume>

<ContinueState>Continue state, including but not limited to play, pause, multiple, full screen, split screen</ContinueState>

</u:ContinuePlay>

</s:Body></s:Envelope>

In some implementations, when a device that is casting a screen is found through the query discovery method, the first electronic device 30 may add a message of screen projection information to the existence notification sent to the second electronic device 40, the The message of screencasting information can be:

HTTP/1.1 200 OK

CACHE-CONTROL:max-age=seconds until advertisement expires

DATE: when response was generated

EXT:

LOCATION: URL for UPnP description for root device

SERVER:OS/Version UPNP/1.0 product/version

ST: search target

USN: advertisement UUID

ContinueURI: URL of the video link for the continuation video

ContinueSeek: Continue Seek video progress

ContinueVolume: Continue video volume

ContinueState: Continue state, including but not limited to play, pause, multiple, full screen, split screen.

In some implementations, when the screen-casting device is found through the active notification method, the first electronic device 30 broadcasts a screen-casting message through the local area network to carry the screen-casting information. In some embodiments, the first electronic device 30 can expand the message field of the screen projection information through the underlying discovery protocol of DLNA, such as the Simple Service Discovery Protocol (SSDP), and broadcast the screen projection in the local area network News and screencast information. Other electronic devices that acquire the trigger event, such as the second electronic device 40, receive the screen-casting message and the screen-casting information broadcast by the first electronic device 30, and while knowing that the first electronic device 30 is screen-casting, can Get screencast information.

Step S215: Screen projection continues.

In some implementations, the second electronic device 40 may start the screen projection sequence according to the screen projection information received from the first electronic device 30 . In some implementations, the second electronic device 40 may obtain the screen projection content from the server 50 according to the network address of the screen projection content in the screen projection information, and obtain the screen projection content according to the screen projection status in the screen projection information. Information, such as playback progress, playback volume, and playback status (which may include but not limited to play, pause, multiplier, full screen, split screen), etc., to continue playing the screen projection content. Therefore, the second electronic device 40 and the first electronic device 30 synchronously play the same screen projection content with the same play progress, play volume and play state. In some implementations, the second electronic device 40 can display or play the screen projection content according to the screen projection resource information corresponding to the screen projection content acquired from the first electronic device 30 and the current state of the screen projection content, so that the second The second electronic device 40 can continue the display or playback status of the first electronic device 30 on the screen projection content, without the need for the mobile terminal 20 to identify the screen projection information of the screen projection content, and then feed it back to the second electronic device 40, simplifying the communication between multiple terminal devices. The communication process improves the efficiency of screen projection connection.

In some implementations, after the second electronic device 40 triggers the screen projection connection and finds that the device is casting the screen, it further includes asking the user whether to continue the screen projection. In some implementation manners, please also refer to FIG. 4 , the second electronic device 40 displays a dialog box 44 through a display interface 42 , asking whether to continue the screen projection, and receives a user's operation. When receiving the user's affirmative operation, such as detecting the user's operation on the first icon 46 in the dialog box 44, the second electronic device 40 immediately performs the screen projection connection; when receiving the user's negative operation, such as detecting When the user's operation on the second icon 48 in the dialog box 44 is detected, the second electronic device 40 does not perform the screen projection connection. In some implementations, the first icon 46 is a positive icon, and the second icon 48 is a negative icon.

Optionally, in some embodiments, please also refer to FIG. 5 , the first electronic device 30 and the second electronic device 40 may also use other ways to interact and project screen information, for example, the first electronic device 30 may send a message to the second electronic device 40 transmits the mirrored screen projection data stream, that is, the mirrored screen projection is established between the first electronic device 30 and the second electronic device 40, then the second electronic device 40 and the first electronic device 30 synchronously display or play the screencast content, and the second electronic device 30 The second electronic device 40 does not need to obtain screen projection content from the server 50, which simplifies the screen projection connection steps and improves efficiency.

Optionally, in some embodiments, please also refer to FIG. 5 , the first electronic device 30 and the second electronic device 40 may also use other ways to interact and project screen information, for example, the first electronic device 30 may send a message to the second electronic device 40 transmits the mirrored screen projection data stream, that is, a mirrored screen projection connection is established between the first electronic device 30 and the second electronic device 40, and the mobile terminal 20 and the first electronic device 30 can also be a mirrored screen projection connection, then the mobile terminal 20 The screen mirroring data stream can be transmitted to the first electronic device 30 , and the first electronic device 30 can transmit the screen mirroring data stream to the second electronic device 40 . That is, the screen projection content of the second electronic device 40 can be provided by the mobile terminal 20 without obtaining the screen projection content from the server 50 , which simplifies screen projection connection steps and improves efficiency.

Step S216: Feedback that the screen projection has been continued.

In some implementations, the second electronic device 40 may send the screen projection connection information and the networking information of the second electronic device to the first electronic device 30 to inform the first electronic device 30 that the projection has been completed. screen continues. In some implementations, the networking information of the second electronic device 40 may include but not limited to the IP address and network port of the second electronic device 40 .

Step S217: Notify the control transfer.

The first electronic device 30 may send a control transfer notification to the mobile terminal 20 . In some implementation manners, the control transfer notification sent by the first electronic device 30 includes the connection information of the screen projected by the second electronic device 40 and the networking information of the second electronic device. Wherein, the networking information of the second electronic device 40 may include but not limited to the IP address and network port of the second electronic device 40 . Since the second electronic device 40 has established communication with the first electronic device 30 and the first electronic device 30 has established communication with the mobile terminal 20, the second electronic device 40 can convey the second electronic device 40 to the mobile terminal 20 through the first electronic device 30. The networking information of the electronic device 40 enables the mobile terminal 20 to obtain the networking information of the second electronic device 40 , and then the mobile terminal 20 can establish communication with the second electronic device 40 according to the networking information of the second electronic device 40 .

Step S218: Re-establish the screen projection control to complete the control transfer.

In some embodiments, the mobile terminal 20 establishes a second screen projection connection with the second electronic device 40 according to the received networking information of the second electronic device 40, and at the same time, the mobile terminal 20 can disconnect from the The first screen projection connection of the first electronic device 30 . In some embodiments, the screen projection connection may be a control link established by Simple Object Access Protocol (SOAP) based on DLNA Transmission Control Protocol (Transmission Control Protocol, TCP) connection. Thus, the user can control (for example, play, pause, stop, fast forward/rewind, adjust volume, full-screen display, split-screen display, and adjust display ratio) the screen projection of the second electronic device 40 through the mobile terminal 20 content. Thus, the user can conveniently use the mobile terminal 20 that is easy to carry and operate to remotely control the projected screen content of the second electronic device 40 to obtain a better operating experience.

Please also refer to FIG. 6 , which is a schematic diagram of an application scenario of the screen projection control transfer of the screen projection connection method provided by an embodiment of the present application. The mobile terminal 20 is disconnected from the first screen projection control of the first electronic device 30 , and the mobile terminal 20 establishes a second screen projection control connection with the second electronic device 40 .

In addition, the second electronic device 40 can also directly obtain user operations to control the content of the screen projection, such as play, pause, stop, fast forward/rewind, adjust volume, full screen display, split screen display, and adjust the display ratio wait. In some implementations, the user can directly operate the second electronic device 40 to control the projected content, for example, operate the display interface of the second electronic device 40 or operate a remote control matched with the second electronic device 40 .

Optionally, in some embodiments, when the mobile terminal 20 and the second electronic device 40 can establish a second screen projection control connection and disconnect the first screen projection control connection with the first electronic device 30 , the user can also turn off the first electronic device 30, or the first electronic device 30 can also be automatically turned off, and at this time only the second electronic device 40 is used to display or play the projected content. It can be understood that when the user moves from the living room to the bedroom, the projected screen content can only be watched through the second electronic device 40 in the bedroom, and the first electronic device 30 in the living room is no longer required to watch, and the first electronic device 30 can be turned off to Save power.

Optionally, in some embodiments, the first screen projection connection between the mobile terminal 20 and the first electronic device 30 may not be transferred, that is, the mobile terminal 20 and the second electronic device 40 do not need to establish a second screen projection connection, then The mobile terminal 20 maintains a control link with the first electronic device 30, the first electronic device 30 receives the control information of the mobile terminal 20, and forwards the control information to the second electronic device 40, so as to achieve the purpose of controlling the second electronic device 40 . In this way, steps S216-S218 can be ignored and not executed, thereby simplifying the screen projection connection steps and improving efficiency.

Optionally, in some embodiments, please refer to FIG. 5 together. When the first electronic device 30 and the second electronic device 40 are mirroring the screen, the projection between the mobile terminal 20 and the first electronic device 30 Screen control may not be transferred, that is, there is no need to establish a screen projection connection between the mobile terminal 20 and the second electronic device 40, and steps S216-S218 may be ignored, thereby simplifying the screen projection connection steps and improving efficiency.

Optionally, in some implementations, when the first electronic device 30 and the second electronic device 40 are mirrored for screen projection, the mobile terminal 20 can establish a second screen projection control connection with the second electronic device 40, and The first screen projection control connection is disconnected from the first electronic device 30 , so as to realize the transfer of the screen projection control link, and realize the screen projection control of the second electronic device 40 by the mobile terminal 20 .

Step S219: Synchronize screen projection information.

In some embodiments, when the mobile terminal 20 can establish a second screen projection control connection with the second electronic device 40 and disconnect the first screen projection control connection with the first electronic device 30, and the second When an electronic device 30 is not turned off and continues to play the projected content, the second electronic device 40 establishes information synchronization with the first electronic device 30 .

In some implementations, when the second electronic device 40 detects that the user operates the screen-cast content, or when the mobile terminal 20 detects that the user operates the screen-cast content, and the second electronic device 40 obtains the mobile When the terminal 20 detects the user's operation on the projected content, for example, changing the playback state (play/pause), changing the playback progress, adjusting the playback volume, adjusting the playback multiplier, adjusting the display ratio, etc., the second electronic device 40 can set the The first electronic device 30 and the mobile terminal 20 are notified of information about the status change of the projected screen content. Thus, the second electronic device 40 can synchronize screen projection information to the mobile terminal 20 and the first electronic device 30 in real time, maintaining the synchronization of multiple terminal devices. In some implementation manners, the second electronic device 40 may notify the first electronic device 30 of the status change of the projected screen content based on the Notify method of the General Event Notification Architecture (GENA) protocol. And the mobile terminal 20.

In some embodiments, the second electronic device 40 establishing a screen projection control connection with the mobile terminal 20 serves as the main screen device, and other terminal devices, such as the first electronic device 30 serve as the secondary screen device. When the information of the main screen device changes, the secondary screen device is automatically notified, thereby realizing synchronization of screen projection information of multiple terminal devices. It can be understood that the first electronic device 30 and the second electronic device 40 installed in different spaces synchronously play the projected content, so that multiple users in different spaces can watch the projected content through the first electronic device 30 and the second electronic device 40 respectively. Screen content, convenient for multiple people to watch at the same time.

Please also refer to FIG. 7 , which is a schematic diagram of an application scenario of synchronous screen projection information of a screen projection continuation method provided by an embodiment of the present application. The mobile terminal 20 establishes a screen projection control connection with the second electronic device 40, the second electronic device 40 serves as the main screen device, and the first electronic device 30 serves as the secondary screen device. When the information of the second electronic device 40 changes, the second The electronic device 40 automatically notifies the first electronic device 30 , so that the screen projection information of the second electronic device 40 and the first electronic device 30 are synchronized.

Optionally, in some embodiments, after the mobile terminal 20 can establish a screen projection control connection with the second electronic device 40 and disconnects the screen projection control connection with the first electronic device 30, and the first When the electronic device 30 is turned off, the second electronic device 40 may only synchronize screen projection information to the mobile terminal 20 .

Optionally, in some implementations, the user can preset whether the second electronic device 40 synchronizes the screen projection information through the mobile terminal 20 or the second electronic device 40, and when it is set to not synchronize the screen projection information, the step S219 may be ignored and not executed. If step S219 is not executed and the first electronic device 30 is not turned off, then the first electronic device 30 can obtain the last time before the mobile terminal 20 disconnects the screen projection control connection with the first electronic device 30 to continue displaying or playing the screencasting content.

Step S220: Respond to the synchronous screen projection information.

Optionally, in some implementations, the first electronic device 30 may respond to the synchronous screen projection information received from the second electronic device 40 . For example, the second electronic device 40 changes the playing state (pause), and synchronizes the screen projection information to the first electronic device 30 and the mobile terminal 20, and the first electronic device 30 responds to the screen projection information to pause the playback of the screencast content. Thus, the first electronic device 30 and the second electronic device 40 keep playing synchronously. Optionally, in another embodiment, the first electronic device 30 may not respond to the synchronous screen projection information received from the second electronic device 40 .

For example, the second electronic device 40 changes the playing state (pause), and synchronizes screen projection information to the first electronic device 30 and the mobile terminal 20, and the first electronic device 30 does not respond to the screen projection information. information, and continue to play the content on the screen. Thus, the first electronic device 30 and the second electronic device 40 play separately, which can respectively meet the viewing needs of users in different spaces. It can be understood that the mobile terminal 20 or the first electronic device 30 may preset whether to respond to the synchronous screen projection information. It can be understood that, when the mobile terminal 20 or the first electronic device 30 presets not to respond to the synchronous screen projection information, step S220 can be ignored and not executed.

The screen projection connection method of the present application provides screen projection connection between multiple terminal devices, so that users can switch between multiple terminal devices and screen projection connections, which is convenient for users to control projection screens in the case of scene switching, and multiple terminal devices The screen projection information is synchronized between the screens, and the playback of the screen projection content is automatically continued, providing users with a better visual experience. At the same time, it saves multiple tedious steps of re-finding the screen projection content, locating the playback progress, and re-projecting the screen, providing a convenient and fast screen projection connection experience.

The comparison of the main steps of the screen projection continuation method in the embodiment of the present application with the current screen projection continuation method can be referred to in Table 1 as follows:

Compared with the current screen projection connection method, the screen projection connection method of the present application greatly simplifies the screen projection connection process, and saves the mobile terminal from searching for the screen projection content, locating the projection content progress, and re-projecting the screen. The process and operation simplifies the communication process between multiple terminal devices, improves the efficiency of screen projection and connection, and also provides users with a better experience.

Please refer to FIG. 8 , which is a flow chart of a method for connecting content based on multiple devices according to an embodiment of the present application. Exemplarily, the synchronous display method may include the following steps.

Step S811, the first electronic device 30 executes the content.

In some implementations, the first electronic device 30 can run an application program (Application program, APP) and display an APP interface. The first electronic device 30 can receive user operations through the APP interface and implement control over the APP. It can be understood that the APP interface may include multiple pages, and the APP interface may switch multiple pages when receiving user operations. In some implementations, the user can browse and operate the APP through the first electronic device 30 in the first space 12 , for example, control the APP through the APP interface or a remote controller paired with the first electronic device 30 . In addition, the first electronic device 30 may also exchange APP information with the server 50, for example, interacting with pushed content or network content of the APP.

Step S812, triggering content continuation.

In some implementations, when the user moves from the first space 12 where the first electronic device 30 is located to another space, such as the second space 14 where the second electronic device 40 is located, the second electronic device 40 acquires a content continuation trigger event. The content connection triggering event may include, but not limited to, any one or more of the following methods: starting the second electronic device 40, the second electronic device 40 detecting that the user enters the detection range, a device with a detection or sensing function The device detects that the user enters the detection range or the device with the wireless positioning function detects that the mobile terminal 20 enters the detection range, the second electronic device 40 determines that the user has the intention to watch the second electronic device 40, the second electronic device 40. It is determined that the user enters the room where the second electronic device 40 is installed (such as the second space 14), and the second electronic device 40 receives an instruction message instructing the second electronic device 40 to continue screen projection. For the implementation process of the content continuation trigger event, reference may be made to the aforementioned step S212.

Step S813, discovering the device running the APP.

In some implementation manners, the discovery of the device running the APP may include active notification and query of the discovery method. The active notification method may be that the first electronic device 30 running the APP broadcasts the running APP information through the local area network. The query discovery method may be that the second electronic device 40 that acquires the trigger event finds whether there is a device running APP in the local area network. For the implementation process of the proactive notification and query discovery method, reference may be made to the aforementioned step S213.

Step S814, exchanging running information.

In some implementations, the first electronic device 30 can send its operation information to the second electronic device 40 . The running information may include, but not limited to, the running APP of the first electronic device 30 , the currently displayed APP interface and running status, and the like. In some implementations, the first electronic device 30 can transmit the running information by extending the message field of the content connection protocol of DLNA, for example, extending the message field corresponding to the running APP and the currently displayed APP interface.

In some implementations, the message field of the extended DLNA content may include:

ContinueAPP: the name of the application that needs to be continued

APPContent: continue the current running content of the application (such as the interface where it is located, running status, etc.)

It can be understood that the rest of the message information of the interactive running information can refer to the message field of the aforementioned step S214.

In some implementations, when a running device is found through the active notification method, the second electronic device 40 can request the current running information from the first electronic device 30, and the first electronic device 30 can respond to the request to the second electronic device 40. Device 40 sends operational information. In some implementations, when a running device is found through the query discovery method, the first electronic device may add a message of running information to the existence notification sent to the second electronic device 40 .

In step S815, the content continues to run.

In some implementations, the second electronic device 40 may start a continuous operation according to the operation information received from the first electronic device 30 . In some implementations, the second electronic device 40 can continue to run the same APP according to the running APP in the running information, and can continue to display the same APP interface according to the currently displayed APP interface in the running information. Thus, the user can continue to browse and operate the running APP and the displayed APP interface of the first electronic device 30 through the second electronic device 40 in the second space 14 , which is convenient for the user and improves the user experience.

In some implementations, the second electronic device 40 can receive user operations through the APP interface and implement control over the APP. It can be understood that the APP interface may include multiple pages, and the APP interface may switch multiple pages when receiving user operations. In some implementations, the user can browse and operate the APP through the second electronic device 40 in the second space 14 , for example, control the APP through the APP interface or a remote controller paired with the second electronic device 40 . In addition, the second electronic device 40 can also exchange APP information with the server 50, for example, push content or network content of the interactive APP.

In some implementations, after the second electronic device 40 continues to run the APP, the first electronic device 30 can continue to run the APP and display the APP interface, and can receive operations from other users through the APP interface. In some implementations, after the second electronic device 40 continues to run the APP, the first electronic device 30 can be turned off to save power.

In the method for connecting content between multiple devices, when the user runs the APP and displays the APP interface through the first electronic device 30 in the first space 12, and the user switches from one space to another space, for example, switching from the first space 12 When arriving at the second space 14, the second electronic device 40 can automatically run and display the same APP and APP interface as the user's first electronic device 30 in the first space 12 before, so that the user can obtain a better continuous experience of use.

Please refer to FIG. 9 , which is a schematic structural diagram of an electronic device provided by an embodiment of the present application. The structure of the electronic device is applicable to the first electronic device 30 and the second electronic device 40 . In one embodiment, the electronic device 60 may at least include a memory 61 , at least one processor 62 , a display module 63 and a communication module 64 .

Those skilled in the art should understand that the structure of the electronic device 60 shown in FIG. 3 does not constitute a limitation of the embodiment of the present application, and the electronic device 60 may also include more or less other hardware or software than shown in the illustration, or Different component arrangements. It should be noted that the electronic device 60 is only an example, and other existing or future electronic products that can be adapted to this application should also be included within the scope of protection of this application.

In some embodiments, the electronic device 60 includes a terminal capable of automatically performing numerical calculations and/or information processing according to preset or stored instructions, and its hardware includes but not limited to microprocessors, application-specific integrated circuits ( Specific Integrated Circuit, ASIC), programmable gate array (Field-Programmable Gate Array, FPGA), digital processor (Digital Signal Processor, DSP), embedded devices, etc.

In some embodiments, the memory 61 is used to store program codes and various data. Described memory 61 can comprise read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), programmable read-only memory (Programmable Read-Only Memory, PROM), erasable programmable read-only memory Memory (Erasable Programmable Read-Only Memory, EPROM), One-time Programmable Read-Only Memory (OTPROM), Electronically Erasable Programmable Read-Only Memory (Electrically-Erasable Programmable Read-Only Memory, EEPROM), CD-ROM (Compact Disc Read-Only Memory, CD-ROM) or other optical disk storage, magnetic disk storage, tape storage, or any other computer-readable medium that can be used to carry or store data.

In some embodiments, the at least one processor 62 may be composed of an integrated circuit, for example, may be composed of a single packaged integrated circuit, or may be composed of multiple integrated circuits with the same function or different functions packaged, including a Or a combination of multiple central processing units (Central Processing unit, CPU), microprocessors, digital processing chips, graphics processors, and various control chips. The at least one processor 62 is the control core (Control Unit) of the first electronic device, by running or executing programs or modules stored in the memory 61, and calling data stored in the memory 61, To perform various functions of the electronic device 60 and process data, for example, perform data processing functions.

The above-mentioned integrated units implemented in the form of software function modules can be stored in a computer-readable storage medium. The above-mentioned software functional modules are stored in a storage medium, and include several instructions to enable a computer device (which may be a personal computer, a terminal, or a network device, etc.) or a processor (processor) to execute the methods described in the various embodiments of the present application. part.

Computer programs 65 such as program codes are stored in the memory 61 , and the at least one processor 62 can invoke the program codes stored in the memory 61 to perform related functions. In an embodiment of the present application, the memory 61 stores a plurality of instructions, and the plurality of instructions are executed by the at least one processor 62 to implement the screen projection continuation method.

The display module 63 is used for displaying screen projection content and providing an operation interface. In some implementations, the display module 63 detects the user's operation through the operation interface, and executes the instruction corresponding to the operation, for example, displays a dialog box, asks whether to continue the screen projection, and receives the user's operation. In some implementations, the display module 63 may be, but not limited to, a touch screen and a display screen for receiving commands through a remote controller.

The communication module 64 is used to establish a communication connection with other terminal devices and realize data interaction. In some implementations, the communication module 64 can be connected to a network, and exchange data with other terminal devices through the network.

The present application also provides a computer-readable storage medium, where a computer program is stored in the computer-readable storage medium, and when the computer program is executed by a processor, it is used to implement the steps of any one of the screen projection continuation methods described above .

In the above embodiments, the DLNA screen projection protocol is used as an example for description. Those skilled in the art should understand that the screen projection protocol is not limited to DLNA technology. With the evolution of technology, if the screen projection protocol that appears in the future is applicable to this application, If it does not exceed the scope covered by the embodiments of the present application, it shall also belong to the protection scope of the present application.

In each embodiment of the present application, each functional module of the electronic device or server may be integrated into one processing unit, each unit may exist separately physically, or two or more units may be integrated into one unit. The above-mentioned integrated units can be implemented in the form of hardware, or in the form of hardware plus software function modules.

It will be apparent to those skilled in the art that the present application is not limited to the details of the exemplary embodiments described above, but that the present application can be embodied in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, as long as it is within the spirit and spirit of the present application, appropriate changes and changes made to the above embodiments should fall within the protection scope of the present application.

Claims (42)

1. A screen projection connection method applied to a system including a mobile terminal, a first electronic device, and a second electronic device, wherein the method includes:

   The mobile terminal establishes a first screen projection connection with the first electronic device, and sends first screen projection information to the first electronic device, so that the first electronic device displays the first screen projection information according to the first screen projection information. One projection content;

   The second electronic device acquires a trigger event for continuous screen projection, wherein the trigger event for continuous screen projection is used to trigger the second electronic device to perform continuous screen projection;

   The second electronic device discovers the first electronic device that is projecting a screen, and obtains the first screen projection information from the first electronic device, so that the second electronic device according to the first screen projection information Displaying the first projected screen content.
2. The method according to claim 1, wherein the mobile terminal, the first electronic device and the second electronic device are in the same local area network,

   The second electronic device discovers the first electronic device that is casting a screen, including:

   The first electronic device broadcasts a first message in the local area network, so that the second electronic device determines, according to the first message, that the first electronic device is a device that is projecting a screen;

   or,

   The second electronic device broadcasts a second message in the local area network; the first electronic device sends a third message to the second electronic device in response to the second message, so that the second electronic device transmits a third message according to the The third message determines that the first electronic device is a device that is casting a screen.
3. The method according to claim 2, characterized in that,

   The acquisition of the first screen projection information by the second electronic device from the first electronic device includes:

   The second electronic device sends a screen projection information acquisition request; the first electronic device sends the first screen projection information to the second electronic device in response to the screen projection information acquisition request, so that the second The electronic device acquires the first screen projection information;

   or,

   The first electronic device carries the first screen projection information in the first message or the third message, so that the second electronic device acquires the first screen projection information.
4. The method according to any one of claims 1-3, characterized in that, the trigger event of the continuous screen projection includes one or more of the following items:

   the second electronic device is turned on;

   The second electronic device detects that the user enters the detection range;

   The second electronic device acquires that other detection or sensing devices detect that the user enters the detection range;

   The second electronic device obtains that other devices with a wireless positioning function detect that the mobile terminal enters the detection range;

   The second electronic device determines that the user has intent to watch the second electronic device;

   The second electronic device determines that the user enters a room where the second electronic device is installed;

   The second electronic device receives an indication message instructing the second electronic device to perform continuous screen projection.
5. The method according to any one of claims 1-4, wherein the first screen projection information includes first screen projection resource information and first screen projection state information,

   The displaying of the first screen projection content by the first electronic device according to the first screen projection information includes:

   The first electronic device obtains the first screen projection content from a server according to the first screen projection resource information, so that the screen projection state indicated by the first electronic device information displays the first screen projection content;

   The second electronic device displays the first screen projection content according to the first screen projection information, including:

   The second electronic device acquires the first screen projection content from a server according to the first screen projection resource information, so that the second electronic device displays the screen projection status indicated by the first screen projection status information. Describe the content of the first screen projection.
6. The method according to claim 5, wherein the first screen projection resource information includes a Uniform Resource Identifier (URI), and the first screen projection status information includes one or more of playback progress, playback volume, and playback status. Various, the playing state includes one or more of play, pause, double speed, full screen, and split screen.
7. The method according to any one of claims 1-6, wherein the method further comprises:

   The terminal device acquires networking information of the second electronic device;

   The terminal device disconnects the first screen projection connection with the first electronic device, and establishes a second screen projection connection with the second electronic device according to the networking information.
8. The method according to claim 7, wherein after the terminal device establishes the second screen projection connection with the second electronic device, the method further comprises:

   The second electronic device sends the second screen projection information to the first electronic device, where the second screen projection information is different from the first screen projection information.
9. The method according to any one of claims 1-6, wherein the method further comprises:

   The first electronic device sends second screen projection information to the second electronic device, wherein the second screen projection information is different from the first screen projection information.
10. The method according to any one of claims 1-9, wherein the second electronic device displays the first screen projection content according to the first screen projection information, comprising:

    The second electronic device sends an inquiry message whether to perform continuous screen projection, and if an affirmative response is received in response to the inquiry message, the second electronic device displays the first screen projection information according to the first screen projection information. One screen content.
11. The method according to any one of claims 1-4, wherein the first screen projection information includes the first screen projection content.
12. A screen projection connection method applied to a first electronic device, characterized in that the method includes:

    The first electronic device establishes a first screen projection connection with the mobile terminal, and acquires first screen projection information from the mobile terminal, so that the first electronic device displays first screen projection content according to the first screen projection information;

    The first electronic device provides the first screen projection information to the second electronic device, and the first screen projection information is used for the second electronic device to display the first screen projection content.
13. The method according to claim 12, wherein the mobile terminal, the first electronic device and the second electronic device are in the same local area network,

    Before the first electronic device provides the first screen projection information to the second electronic device, the method further includes:

    The first electronic device broadcasts a first message in the local area network, and the first message carries indication information that the first electronic device is projecting a screen;

    The first electronic device provides the first screen projection information to the second electronic device, including:

    The first electronic device sends the first screen projection information to the second electronic device in response to the screen projection information acquisition request sent by the second electronic device.
14. The method according to claim 12, wherein the mobile terminal, the first electronic device and the second electronic device are in the same local area network,

    The first electronic device provides the first screen projection information to the second electronic device, including:

    The first electronic device broadcasts the first screen projection information in the local area network.
15. The method according to claim 12, wherein the mobile terminal, the first electronic device and the second electronic device are in the same local area network,

    Before the first electronic device provides the first screen projection information to the second electronic device, the method further includes:

    The first electronic device receives the second message broadcast by the second electronic device in the local area network.
16. The method according to any one of claims 12-15, wherein the first screen projection information includes first screen projection resource information and first screen projection state information,

    The displaying of the first screen projection content by the first electronic device according to the first screen projection information includes:

    The first electronic device obtains the first screen projection content from a server according to the first screen projection resource information, so that the first electronic device displays the screen projection status indicated by the first screen projection status information. Describe the content of the first screen projection.
17. The method according to claim 16, wherein the first screen projection resource information includes a Uniform Resource Identifier (URI), and the first screen projection status information includes one or more of playback progress, playback volume, and playback status. Various, the playing state includes one or more of play, pause, double speed, full screen, and split screen.
18. The method according to any one of claims 12-17, further comprising:

    The first electronic device acquires the networking information of the second electronic device, and sends the networking information to the terminal device.
19. The method according to any one of claims 12-17, further comprising:

    The first electronic device sends second screen projection information to the second electronic device, wherein the second screen projection information is different from the first screen projection information.
20. The method according to any one of claims 12-15, wherein the first screen projection information includes the first screen projection content.
21. An electronic device, characterized in that the electronic device includes a memory and a processor, and the processor is used to implement the screen projection according to any one of claims 12 to 20 when executing the computer program stored in the memory Continuation method.
22. A computer-readable storage medium, on which a computer program is stored, wherein, when the computer program is executed by a processor, the screen projection continuation method according to any one of claims 12 to 20 is implemented.
23. A screen projection connection method applied to a second electronic device, characterized in that the method includes:

    The second electronic device acquires a trigger event for continuous screen projection, wherein the trigger event for continuous screen projection is used to trigger the second electronic device to perform continuous screen projection;

    The second electronic device discovers the first electronic device that is projecting;

    The second electronic device acquires first screen projection information from the first electronic device, so that the second electronic device displays the first screen projection content according to the first screen projection information.
24. The method according to claim 23, wherein the second electronic device, the mobile terminal and the first electronic device are in the same local area network,

    The second electronic device discovers the first electronic device that is casting a screen, including:

    The second electronic device obtains the first message broadcast by the first electronic device in the local area network, so that the second electronic device determines that the first electronic device is a device that is casting a screen according to the first message ;

    or,

    The second electronic device broadcasts a second message in the local area network, and acquires a third message sent by the first electronic device in response to the second message, so that the second electronic device broadcasts a second message according to the third message The message determines that the first electronic device is a device that is casting a screen.
25. The method of claim 24, wherein,

    The acquisition of the first screen projection information by the second electronic device from the first electronic device includes:

    The second electronic device sends a screen projection information acquisition request; the second electronic device receives the first screen projection sent by the first electronic device to the second electronic device in response to the screen projection information acquisition request information;

    or,

    The second electronic device obtains the first screen projection information from the first message carrying the first screen projection information;

    or,

    The second electronic device acquires the first screen projection information from the third message carrying the first screen projection information.
26. The method according to any one of claims 23-25, characterized in that, the trigger event of the continuous screen projection includes one or more of the following items:

    the second electronic device is turned on;

    The second electronic device detects that the user enters the detection range;

    The second electronic device acquires that other detection or sensing devices detect that the user enters the detection range;

    The second electronic device obtains that other devices with a wireless positioning function detect that the mobile terminal enters the detection range;

    The second electronic device determines that the user has intent to watch the second electronic device;

    The second electronic device determines that the user enters a room where the second electronic device is installed;

    The second electronic device receives an indication message instructing the second electronic device to perform continuous screen projection.
27. The method according to any one of claims 23-26, wherein the first screen projection information includes first screen projection resource information and first screen projection state information,

    The second electronic device displays the first screen projection content according to the first screen projection information, including:

    The second electronic device acquires the first screen projection content from a server according to the first screen projection resource information, so that the second electronic device displays the screen projection status indicated by the first screen projection status information. Describe the content of the first screen projection.
28. The method according to claim 27, wherein the first screen projection resource information includes a Uniform Resource Identifier (URI), and the first screen projection status information includes one or more of playback progress, playback volume, and playback status. Various, the playing state includes one or more of play, pause, double speed, full screen, and split screen.
29. The method according to any one of claims 23-28, further comprising:

    The second electronic device sends the networking information of the second electronic device to the first electronic device;

    The second electronic device establishes a second screen projection connection with the terminal device;

    The second electronic device acquires second screen projection information different from the first screen projection information from the terminal device through the second screen projection connection, so that the second electronic device Information displays the content of the second screen projection.
30. The method according to claim 29, further comprising:

    The second electronic device sends the second screen projection information to the first electronic device.
31. The method according to any one of claims 23-28, further comprising:

    The second electronic device acquires second screen projection information sent by the first electronic device, where the second screen projection information is different from the first screen projection information.
32. The method according to any one of claims 23-31, wherein the second electronic device displays the first screen projection content according to the first screen projection information, comprising:

    The second electronic device sends an inquiry message whether to perform continuous screen projection, and if an affirmative response is received in response to the inquiry message, the second electronic device displays the first screen projection information according to the first screen projection information. One screen content.
33. The method according to any one of claims 23-26, wherein the first screen projection information includes the first screen projection content.
34. An electronic device, characterized in that the electronic device includes a memory and a processor, and the processor is used to implement the screen projection according to any one of claims 23 to 33 when executing the computer program stored in the memory Continuation method.
35. A computer-readable storage medium, on which a computer program is stored, wherein, when the computer program is executed by a processor, the screen projection continuation method according to any one of claims 23 to 33 is implemented.
36. A content continuation method applied to a system including a first electronic device and a second electronic device, characterized in that the method includes:

    The first electronic device runs and displays first content;

    The second electronic device acquires a trigger event of content connection, wherein the content connection trigger event is used to trigger the second electronic device to perform content connection;

    The second electronic device discovers the first electronic device that is running the first content, and obtains first running information from the first electronic device, so that the second electronic device runs and The first content is displayed.
37. The method according to claim 36, wherein the first electronic device and the second electronic device are in the same local area network,

    The second electronic device discovering the first electronic device that is running the first content includes:

    The first electronic device broadcasts a first message in the local area network, so that the second electronic device determines that the first electronic device is a device running the first content according to the first message;

    or,

    The second electronic device broadcasts a second message in the local area network; the first electronic device sends a third message to the second electronic device in response to the second message, so that the second electronic device transmits a third message according to the The third message determines that the first electronic device is a device running the first content.
38. The method of claim 37, wherein,

    The second electronic device acquires first running information from the first electronic device, including:

    The second electronic device sends an operation information acquisition request; the first electronic device sends the first operation information to the second electronic device in response to the operation information acquisition request, so that the second electronic device obtains the first running information;

    or,

    The first electronic device carries the first running information in the first message or the third message, so that the second electronic device acquires the first running information.
39. The method according to any one of claims 36-38, wherein the trigger event of the content connection includes one or more of the following items:

    the second electronic device is turned on;

    The second electronic device detects that the user enters the detection range;

    The second electronic device acquires that other detection or sensing devices detect that the user enters the detection range;

    The second electronic device obtains that other devices with a wireless positioning function detect that the mobile terminal enters the detection range;

    The second electronic device determines that the user has intent to watch the second electronic device;

    The second electronic device determines that the user enters a room where the second electronic device is installed;

    The second electronic device receives an indication message instructing the second electronic device to continue content.
40. The method according to any one of claims 36-39, wherein the first running information includes the first content information, the first display interface and the first running state information,

    The second electronic device runs and displays the first content according to the first operation information, including:

    The second electronic device runs the first content corresponding to the first content information in the running state indicated by the first running state information according to the first content information and the first running state information, and displays the The first display interface.
41. The method according to claim 40, wherein the first content information includes the running application program, the first display interface includes the interface of the application program, and the first running status information includes the running status of the application program .
42. The method according to any one of claims 36-40, characterized in that, after the second electronic device runs according to the first running information and displays the first content,

    The first electronic device continues to run and display the first content;

    or,

    The first electronic device stops running and displays the first content.

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