WO2022083483A1

WO2022083483A1 - Display control method and apparatus, terminal and storage medium

Info

Publication number: WO2022083483A1
Application number: PCT/CN2021/123548
Authority: WO
Inventors: 汤友科; 鲁威; 罗晨
Original assignee: 北京字节跳动网络技术有限公司
Priority date: 2020-10-20
Filing date: 2021-10-13
Publication date: 2022-04-28
Also published as: CN114385096A; CN114385096B

Abstract

The present invention relates to the technical field of computers, and specifically, to a display control method and apparatus, a terminal and a storage medium. The provided display control method comprises: running an external display system on a terminal device, and projecting a task interface run by the external display system to an external display device to carry out display (S101); saving task information run by the external display system (S102); if an instruction to display the external display system is received after the external display system stops displaying, running the external display system and acquiring task information run when the external display system stops displaying (S103); and on the basis of the task information, displaying a task interface corresponding to the task information by means of the external display device (S104).

Description

Display control method, device, terminal and storage medium

CROSS-REFERENCE TO RELATED APPLICATIONS

This application is based on the Chinese patent application with the application number of 202011128943.4 and the application date of October 20, 2020, entitled "Display Control Method, Device, Terminal and Storage Medium", and claims the priority of the Chinese patent application. The entire contents of the patent application are incorporated herein by reference.

technical field

The present disclosure relates to the field of computer technologies, and in particular, to a display control method, device, terminal, and storage medium.

Background technique

In addition to mirroring and displaying the contents of the mobile phone by connecting the mobile phone to the external display, the related art can also display a PC-like interactive system on the external display. However, after the connection is interrupted due to unstable connection, or the user manually disconnects and then reconnects the external display, the running application windows in the interactive system of this type of PC will be lost, resulting in Loss of windows.

SUMMARY OF THE INVENTION

This Summary is provided to introduce concepts in a simplified form that are described in detail in the Detailed Description section that follows. This summary section is not intended to identify key features or essential features of the claimed technical solution, nor is it intended to be used to limit the scope of the claimed technical solution.

According to one or more embodiments of the present disclosure, a display control method is provided, applied to a terminal device, and the display control method includes:

Running an external display system on the terminal device, and projecting the task interface run by the external display system to the external display device for display;

save the task information of the external display system running;

If an instruction to display the external display system is received after the external display system stops displaying, run the external display system and obtain task information that is run when the external display system stops displaying;

Display a task interface corresponding to the task information through the external display device based on the task information.

According to one or more embodiments of the present disclosure, there is provided a display control device, comprising:

a first running unit, used for running an external display system on the terminal device, and projecting the task interface running by the external display system to the external display device for display;

an information saving unit, used for saving task information of the external display system running;

A second running unit, configured to run the external display system and obtain task information that is run when the external display system stops displaying if an instruction to display the external display system is received after the external display system stops displaying ;

The projection display unit is configured to display a task interface corresponding to the task information through the external display device based on the task information.

According to one or more embodiments of the present disclosure, there is provided a terminal, comprising:

at least one memory and at least one processor;

Wherein, the memory is used for storing program codes, and the processor is used for calling the program codes stored in the memory to make the terminal execute the display control method provided according to one or more embodiments of the present disclosure.

According to one or more embodiments of the present disclosure, there is provided a non-transitory computer storage medium storing program code that, when executed by a computer device, causes the computer device to The display control method provided according to one or more embodiments of the present disclosure is performed.

According to the display control method provided by the present disclosure, by saving the task information of the operation of the external display system when the terminal device is running and projecting the external display system, when the external display system displays again, it can be based on the task information running when the external display system stops displaying. Resume the corresponding task, so as to avoid the loss of the currently running task interface caused by the external display system stopping the display due to reasons such as disconnection of the external display device or switching of the display mode.

Description of drawings

The above and other features, advantages and aspects of various embodiments of the present disclosure will become more apparent when taken in conjunction with the accompanying drawings and with reference to the following detailed description. Throughout the drawings, the same or similar reference numbers refer to the same or similar elements. It should be understood that the drawings are schematic and that the originals and elements are not necessarily drawn to scale.

FIG. 1 is a flowchart of a display control method provided according to an embodiment of the present disclosure;

FIG. 2 is a schematic diagram of an exemplary system architecture provided according to an embodiment of the present disclosure;

3 is a flowchart of a display control method provided according to another embodiment of the present disclosure;

4 is a flowchart of a display control method provided according to another embodiment of the present disclosure;

FIG. 5 is a schematic structural diagram of a display control device provided according to an embodiment of the present disclosure;

FIG. 6 is a schematic structural diagram of a terminal device used to implement an embodiment of the present disclosure.

Detailed ways

Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While certain embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be construed as limited to the embodiments set forth herein, but rather are provided for the purpose of A more thorough and complete understanding of the present disclosure. It should be understood that the drawings and embodiments of the present disclosure are only for exemplary purposes, and are not intended to limit the protection scope of the present disclosure.

It should be understood that the steps described in the embodiments of the present disclosure may be performed in a different order, and/or performed in parallel. Furthermore, embodiments may include additional steps and/or omit performing the illustrated steps. The scope of the present disclosure is not limited in this regard.

As used herein, the term "including" and variations thereof are open-ended inclusions, ie, "including but not limited to". The term "based on" is "based at least in part on." The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments". The term "responsive to" and related terms means that one signal or event is affected to some extent, but not necessarily completely or directly, by another signal or event. If event x occurs "in response to" event y, then x may respond directly or indirectly to y. For example, the occurrence of y may ultimately lead to the occurrence of x, but there may be other intervening events and/or conditions. In other cases, y may not necessarily cause x to occur, and x may occur even if y has not occurred. Furthermore, the term "responsive to" can also mean "responsive at least in part." The term "determining" broadly covers a wide variety of actions, which may include calculating, calculating, processing, deriving, investigating, looking up (eg, in a table, database, or other data structure), finding, and the like, and may also This includes receiving (eg, receiving information), accessing (eg, accessing data in memory), and the like, as well as parsing, selecting, selecting, establishing, and the like, and the like. Relevant definitions of other terms will be given in the description below. Relevant definitions of other terms will be given in the description below.

It should be noted that concepts such as "first" and "second" mentioned in the present disclosure are only used to distinguish different devices, modules or units, and are not used to limit the order of functions performed by these devices, modules or units or interdependence.

It should be noted that the modifications of "a" and "a plurality" mentioned in the present disclosure are illustrative rather than restrictive, and those skilled in the art should understand that unless the context clearly indicates otherwise, they should be understood as "one or a plurality of". multiple".

For the purposes of this disclosure, the phrase "A and/or B" means (A), (B), or (A and B).

The names of messages or information exchanged between multiple devices in the embodiments of the present disclosure are only for illustrative purposes, and are not intended to limit the scope of these messages or information.

The display control method provided according to one or more embodiments of the present disclosure is applied to terminal devices, including but not limited to, such as digital TV, desktop computer, notebook computer, PAD (tablet computer), smart watch, mobile phone, digital broadcast reception mobile terminals and fixed terminals such as PDAs, PDAs (Personal Digital Assistants), and PMPs (Portable Multimedia Players).

Referring to FIG. 1, FIG. 1 shows a flowchart of a display control method 100 provided by an embodiment of the present disclosure, including steps S101-S104:

Step S101: Run an external display system on a terminal device, and project a task interface running by the external display system to an external display device for display.

In this embodiment, the terminal device is configured to project the external display system running on it to the external display device in a wired or wireless manner for display, so that the external display device mirrors the external display system running on the terminal device.

The external display system can be a preset operating system that is run by the terminal device and suitable for the external display device, such as a large-screen display system customized based on the Android system, which can be a multi-window system or a single-window system.

Step S102: Save task information of the external display system running.

In some embodiments, the task information includes application running information, application window information, and application display information. Exemplarily, the application running information includes which applications are being run by the external display system; the application window information includes the window to which each application has jumped; the application display information includes application resolution, application DPI (Dots Per Inch) , dots per inch), etc.

Step S103 : if an instruction to display the external display system is received after the external display system stops displaying, run the external display system and acquire task information that runs when the external display system stops displaying.

The instruction to display the external display system is used to trigger the display of the external display system on the external display device, including but not limited to: establishing a connection between the terminal device and the external display device; or, when the terminal device and the external display device are already connected , switch from other display modes, such as mirror projection display mode, to the external display system display mode. The situation where the external display system stops displaying includes but is not limited to: disconnecting the terminal device from the external display device; or, when the terminal device and the external display device remain connected, switching from the external display system display mode to another display mode, such as Mirror screen display mode.

In this step, when the external display system displays again, the task information that is stored in the preceding steps and that runs when the external display system stops displaying can be acquired.

Step S104: Display a task interface corresponding to the task information through the external display device based on the task information.

In this way, according to the display control method provided by the embodiment of the present disclosure, by saving the task information of the operation of the external display system when the terminal device is running and projecting the external display system, the external display system can be displayed again based on what the external display system stopped displaying when the external display system stopped displaying. The running task information restores the corresponding task, thereby avoiding the loss of the currently running task interface caused by the external display system stopping display due to reasons such as disconnection of the external display device or display mode switching.

In some embodiments, the external display system runs based on a virtual screen; step S102 includes: saving the task information in a data structure corresponding to the virtual screen; step S104 includes: based on the task information in the virtual screen A task interface corresponding to the task information is displayed on the screen; the content displayed on the virtual screen is projected to the external display device, so that the external display device mirrors and displays the content displayed in the virtual screen.

Exemplarily, in the Android platform, a virtual screen can be created by calling the createVirtualDisplay() method of the DisplayManager class.

According to the display control method provided by one or more embodiments of the present disclosure, by running the external display system based on the virtual screen, the tasks run by the external display system are related to the virtual screen, and the task information is stored in the data structure corresponding to the virtual screen , the external display device can mirror and display the content in the virtual screen, so that even when the terminal device is disconnected from the external display device or switched to other display modes, the virtual screen still runs in the terminal device. Therefore, by utilizing the feature that the virtual screen is not affected by the connection state of the external physical screen, the embodiment of the present disclosure saves the task information in the data structure corresponding to the virtual screen, so that when the external screen is disconnected or switched to other display modes, the terminal The device does not lose the current running processes and tasks of the external display system, and can also overcome the problem that the task information running on the external display system is strongly related to the screen display information of the currently connected external screen and cannot be used without the external screen. The above-mentioned saving of the task information executed by the external display system by means of a virtual screen is only an example.

In some embodiments, the terminal device is configured to be able to project the content displayed on the terminal screen to an external display device, so that the external display device mirrors and displays the content on the terminal screen; the method 100 further includes:

Step A1: In response to a preset screen switching instruction, the terminal device projects the content displayed on the screen corresponding to the screen switching instruction to an external display device for display.

The terminal screen is the screen of the terminal device itself, and is used as the default display screen of the terminal device.

Exemplarily, in the Android platform, the screen content projected by the terminal device can be switched by calling the DisplayManager class. Exemplarily, the terminal screen is used to display the internal operating system of the terminal device, including but not limited to an Android operating system, an IOS operating system, and the like.

In some embodiments, step A1 includes:

Step a11: when the preset screen switching display instruction corresponds to the content displayed in the display terminal screen, project the content displayed in the terminal screen to an external display device; or,

Step a21: When the preset screen switching display instruction corresponds to displaying the content displayed on the virtual screen, project the content displayed on the virtual screen to the external display device.

In one or more embodiments of the present disclosure, the terminal device can display the content on the terminal screen through an external display device, and can display the content in the virtual screen through the external display device, and supports the connection between the virtual screen and the terminal screen. Switch the display; the external display device can mirror and display the content projected by the terminal device. In some embodiments, when the user switches from the virtual screen display mode to the terminal screen display mode, since the task information is stored in the data structure corresponding to the virtual screen, it can be used to restore the corresponding data structure when the user switches back to the virtual screen display mode tasks, so as to achieve seamless switching between multiple display modes, without losing the tasks that the external display system has run before switching.

It should be noted that when the terminal device projects the content displayed on the terminal screen to an external display device for mirror display, the terminal screen may simultaneously display the corresponding content or be in a screen-off state, which is not limited in this embodiment.

FIG. 2 shows a schematic diagram of an exemplary system architecture provided according to an embodiment of the present disclosure. In the system shown in FIG. 2 , the terminal device 210 and the external display device 220 may be connected in a wired or wireless manner. Exemplarily, the connection method between the terminal device 210 and the external display device 220 includes, but is not limited to, a wired connection method such as high-definition multimedia interface (HDMI), or a wireless connection method such as Wi-Fi. The terminal device 210 has a terminal screen 211 and a virtual screen 212. The terminal device 210 can project the content displayed on the terminal screen 211 or the virtual screen 212 to the wired connection device 221 or the wireless connection device 222 of the external display device 220, so that the external display device 220 mirrors and displays the content in the terminal screen 211 or the virtual screen 212 .

In some embodiments, in response to an operation instruction of the user, the application corresponding to the operation instruction is displayed on the virtual screen, and the corresponding task information is stored in a data structure corresponding to the virtual screen.

In some embodiments, the method 100 further includes: acquiring an operation instruction of the user; distributing an event corresponding to the operation instruction to the virtual screen, so as to display the virtual screen in response to the event corresponding to the operation instruction The task interface has been updated.

In this embodiment, the user's operation instructions include, but are not limited to, touch operation instructions, voice instructions, gesture instructions, instructions triggered by virtual buttons or physical buttons, etc., which can be triggered based on the user's operation on the terminal device or an external display device. . Exemplarily, if the external display device is a touch-screen display, the user's control instruction may be a touch operation for the touch-screen display, and the terminal device may acquire the corresponding operation instruction and distribute the event corresponding to the operation instruction to the virtual screen. , so that users can manipulate the content on the virtual screen by touching the external display.

In some embodiments, the method 100 further includes: if the instruction to display the external display system is not received within a preset period after the external display system stops displaying, removing the virtual screen and clearing Background processes and/or tasks corresponding to the external display system. In this way, it is possible to prevent related tasks and processes from consuming system resources and power consumption of the mobile device for a long time after the mobile device is disconnected from the external display device.

In some embodiments, the method 100 further includes: acquiring the resolution and/or screen density (Density) of the external display device; step S103 includes:

Step b11: determine whether a virtual screen currently exists in the terminal device; if so, execute step b12;

Step b12: Determine whether the resolution and/or screen density of the virtual screen are consistent with those of the currently connected external display device; if so, execute step b13;

Step b13: Run the external display system based on the virtual screen.

In this embodiment, by determining whether the existing virtual screen of the terminal device is compatible with the currently connected external display device, the tasks and processes running based on the virtual screen can be resumed by reusing the adapted virtual screen.

In some embodiments, the method 100 further includes: if no virtual screen currently exists in the terminal device, creating a new virtual screen based on the resolution and/or screen density of the external display device.

In some embodiments, the method 100 further includes: if it is determined that the resolution and/or screen density of the virtual screen is inconsistent with that of the currently connected external display device, removing the virtual screen, and based on the external display device the resolution and/or screen density to create a new virtual screen.

In some embodiments, the method 100 further includes: in response to the instruction to stop displaying the external display system, freezing at least one process corresponding to the external display system, and placing at least one foreground task corresponding to the external display system Switch to background.

The instruction to stop displaying the external display system is used to trigger the external display device to stop displaying the external display system, including but not limited to: disconnecting the terminal device from the external display device; In the case of maintaining the connection, switch the display mode of the external display system to another display mode, such as the mirroring display mode.

Further, in some embodiments, the method 100 further includes: in response to the instruction to display the external display system, unfreezing at least one process corresponding to the external display system, and thawing at least one process corresponding to the external display system The corresponding background task switches to the foreground.

Referring to FIG. 3, FIG. 3 shows a flowchart of a display control method 300 provided by an embodiment of the present disclosure, including steps S301-S306:

Step S301: Create a virtual screen in response to an instruction to display an external display system.

Step S302: Run an external display system on the terminal device based on the virtual screen, and project a task interface running by the external display system to the external display device for display.

Step S303: Save the task information corresponding to the task interface in the data structure corresponding to the virtual screen.

Step S304: If an instruction to display the external display system is received after the external display system stops displaying, run the external display system on the terminal device based on the virtual screen and obtain the information that the external display system stops displaying. The task information that was run at the time.

Step S305: Display a task interface corresponding to the task information on the virtual screen based on the task information.

Step S306: Project the content displayed on the virtual screen to the external display device.

Referring to FIG. 4, FIG. 4 shows a flowchart of a display control method 400 provided according to an embodiment of the present disclosure, including:

Step S401: obtaining the resolution and screen density of the currently connected external display;

Step S402: determine whether a virtual screen already exists in the current terminal device;

If yes, then perform step S403: determine whether the resolution and screen density of the virtual screen are consistent with those of the currently connected external display device;

If it is determined to be consistent, step S404 is performed: reuse the virtual screen; then steps S405-S407 are performed;

Step S405: run an external display system based on the virtual screen;

Step S406: Thawing the process corresponding to the external display system, and switching the background task corresponding to the external display system to the foreground;

Step S407: project the content displayed on the virtual screen to an external display device;

In step S403, if it is determined that they are inconsistent, steps S414-S417 are executed;

Step S414: remove the virtual screen;

Step S415: Create a new virtual screen based on the resolution and screen density of the currently connected external display;

Step S416: run the external display system based on the new virtual screen;

Step S417: project the content displayed on the new virtual screen to the external display device;

In step S402, if it is determined that the current terminal device does not have a virtual screen, the above steps S415-S417 are also executed.

Correspondingly, as shown in FIG. 5 , an embodiment of the present disclosure provides a display control apparatus 500 , including:

The first running unit 501 is used for running the external display system on the terminal device, and projecting the task interface running by the external display system to the external display device for display;

an information saving unit 502, configured to save task information of the external display system running;

The second running unit 503 is configured to run the external display system and obtain a task to run when the external display system stops displaying after receiving an instruction to display the external display system after the external display system stops displaying information;

The projection display unit 504 is configured to display a task interface corresponding to the task information through the external display device based on the task information.

For the embodiments of the apparatus, since they basically correspond to the method embodiments, reference may be made to the partial descriptions of the method embodiments for related parts. The apparatus embodiments described above are only illustrative, and the modules described as separate modules may or may not be separate. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution in this embodiment. Those of ordinary skill in the art can understand and implement it without creative effort.

In this way, according to the display control device provided by the present disclosure, by saving the task information of the operation of the external display system when the terminal device is running and projecting the external display system, when the external display system is displayed again, it can be based on the operation of the external display system when the external display system stops displaying. The task information restores the corresponding task, thereby avoiding the loss of the currently running task interface caused by the external display system stopping the display due to reasons such as disconnection of the external display device or switching of the display mode.

In some embodiments, the external display system runs based on a virtual screen; the information saving unit 502 is configured to save the task information in a data structure corresponding to the virtual screen; the projection display unit 504 includes:

a virtual display subunit, configured to display a task interface corresponding to the task information on the virtual screen based on the task information;

The projection subunit is used for projecting the content displayed on the virtual screen to the external display device, so that the external display device mirrors and displays the content displayed in the virtual screen.

According to the display control device provided by one or more embodiments of the present disclosure, by running the external display system based on the virtual screen, the tasks run by the external display system are related to the virtual screen, and the task information is stored in the data structure corresponding to the virtual screen , the external display device can mirror and display the content in the virtual screen, so that even when the terminal device is disconnected from the external display device or switched to other display modes, the virtual screen still runs in the terminal device. Therefore, by using the feature that the virtual screen is not affected by the connection state of the external physical screen, the embodiment of the present disclosure saves the task information in the data structure corresponding to the virtual screen, so that when the external screen is disconnected or switched to other display modes, the terminal The device does not lose the current running processes and tasks of the external display system, and can also overcome the problem that the task information running on the external display system is strongly related to the screen display information of the currently connected external screen and cannot be used without the external screen. The above-mentioned saving of the task information executed by the external display system by means of a virtual screen is only an example.

In some embodiments, the terminal device is configured to be able to project the content displayed on the terminal screen to an external display device, so that the external display device mirrors and displays the content on the terminal screen; the display control device 500 further includes:

The switching display unit is used for, in response to a preset screen switching instruction, the terminal device projects the content displayed on the screen corresponding to the screen switching instruction to the external display device for display.

In some embodiments, the switching display unit is configured to project the content displayed on the terminal screen to an external display device when the preset screen switching display instruction corresponds to the content displayed on the display terminal screen; The preset screen switching display instruction corresponds to projecting the content displayed in the virtual screen to the external display device when the content displayed in the virtual screen is displayed.

In one or more embodiments of the present disclosure, the terminal device can display the content on the terminal screen through an external display device, and can display the content in the virtual screen through the external display device, and supports the connection between the virtual screen and the terminal screen. Switch the display; the external display device can mirror and display the content projected by the terminal device. When the user switches from the virtual screen display mode to the terminal screen display mode, since the task information is stored in the data structure corresponding to the virtual screen, it can be used to restore the corresponding task when the user switches back to the virtual screen display mode, thereby realizing various Seamless switching between display modes without losing the tasks already running on the external display system before switching.

In some embodiments, the display control apparatus 500 further includes:

an operation instruction obtaining unit, which is used to obtain the user's operation instruction;

The event distribution unit is configured to distribute the event corresponding to the operation instruction to the virtual screen, so as to update the task interface displayed on the virtual screen in response to the event corresponding to the operation instruction.

In some embodiments, the display control apparatus 500 further includes:

A timeout removal unit for removing the virtual screen and clearing the connection with the external display system if the instruction to display the external display system is not received within a preset period of time after the external display system stops displaying Displays background processes and/or tasks corresponding to the system. In this way, it is possible to prevent related tasks and processes from consuming system resources and power consumption of the mobile device for a long time after the mobile device is disconnected from the external display device.

In some embodiments, the display control apparatus 500 further includes:

The screen parameter acquisition subunit is used to acquire the resolution and/or screen density (Density) of the external display device; the second operation unit 503 includes:

a virtual screen existence determination subunit, configured to determine whether a virtual screen currently exists in the terminal device;

Virtual screen parameter determination subunit: used to determine whether the resolution and/or screen density of the virtual screen are consistent with those of the currently connected external display device if it is determined that a virtual screen exists;

A virtual screen multiplexing subunit, configured to run the external display system based on the virtual screen if it is determined that the resolution and/or screen density of the virtual screen is consistent with that of the currently connected external display device.

In some embodiments, the display control apparatus 500 further includes:

The virtual screen creation subunit is configured to create a new virtual screen based on the resolution and/or screen density of the external display device if no virtual screen currently exists in the terminal device.

In some embodiments, the virtual screen creation subunit is further configured to remove the virtual screen if it is determined that the resolution and/or screen density of the virtual screen are inconsistent with those of the currently connected external display device, and based on the The resolution and/or screen density of the external display device creates a new virtual screen.

In some embodiments, the display control apparatus 500 further includes:

The task freezing unit is configured to freeze at least one process corresponding to the external display system in response to an instruction to stop displaying the external display system, and switch at least one foreground task corresponding to the external display system to the background.

Further, in some embodiments, the display control apparatus 500 further includes:

Any unfreezing unit, configured to unfreeze at least one process corresponding to the external display system in response to the instruction for displaying the external display system, and switch at least one background task corresponding to the external display system to the foreground.

Accordingly, according to one or more embodiments of the present disclosure, a terminal device is provided, including:

at least one memory and at least one processor;

The memory is used for storing program codes, and the processor is used for calling the program codes stored in the memory to execute the display control method provided according to one or more embodiments of the present disclosure.

Accordingly, according to one or more embodiments of the present disclosure, a non-transitory computer storage medium is provided, and the non-transitory computer storage medium stores program codes that, when executed by a computer device, cause the computer device to execute A display control method is provided according to one or more embodiments of the present disclosure.

FIG. 6 shows a schematic structural diagram of a terminal device 800 for implementing an embodiment of the present disclosure. Terminal devices in the embodiments of the present disclosure may include, but are not limited to, mobile terminals such as mobile phones, notebook computers, digital broadcast receivers, PDAs (personal digital assistants), PADs (tablets), PMPs (portable multimedia players), and mobile terminals such as Fixed terminals such as digital TV and desktop computers. The terminal device shown in FIG. 6 is only an example, and should not impose any limitations on the functions and scope of use of the embodiments of the present disclosure.

As shown in FIG. 6, the terminal device 800 may include a processing device (eg, a central processing unit, a graphics processor, etc.) 801, which may be loaded into random access according to a program stored in a read only memory (ROM) 802 or from a storage device 808 Various appropriate actions and processes are executed by the programs in the memory (RAM) 803 . In the RAM 803, various programs and data required for the operation of the terminal device 800 are also stored. The processing device 801, the ROM 802, and the RAM 803 are connected to each other through a bus 804. An input/output (I/O) interface 805 is also connected to bus 804 .

Typically, the following devices may be connected to the I/O interface 805: input devices 806 including, for example, a touch screen, touchpad, keyboard, mouse, camera, microphone, accelerometer, gyroscope, etc.; including, for example, a liquid crystal display (LCD), speakers, vibration An output device 807 of a computer, etc.; a storage device 808 including, for example, a magnetic tape, a hard disk, etc.; and a communication device 809. Exemplarily, the storage device 808 may store a first database and a second database, wherein the first database stores at least one first subprogram identifier of the first program; the second database stores at least one second subprogram of the first program. Program ID. The communication means 809 may allow the terminal device 800 to communicate wirelessly or by wire with other devices to exchange data. Although FIG. 6 shows a terminal device 800 having various means, it should be understood that not all of the illustrated means are required to be implemented or provided. More or fewer devices may alternatively be implemented or provided.

In particular, according to embodiments of the present disclosure, the processes described above with reference to the flowcharts may be implemented as computer software programs. For example, embodiments of the present disclosure include a computer program product comprising a computer program carried on a non-transitory computer readable medium, the computer program containing program code for executing the means illustrated in the flowcharts. In such an embodiment, the computer program may be downloaded and installed from the network via the communication device 809, or from the storage device 808, or from the ROM 802. When the computer program is executed by the processing apparatus 801, the above-mentioned functions defined in the apparatus of the embodiment of the present disclosure are executed.

It should be noted that the computer-readable medium mentioned above in the present disclosure may be a computer-readable signal medium or a computer-readable storage medium, or any combination of the above two. The computer-readable storage medium can be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus or device, or a combination of any of the above. More specific examples of computer readable storage media may include, but are not limited to, electrical connections with one or more wires, portable computer disks, hard disks, random access memory (RAM), read only memory (ROM), erasable Programmable read only memory (EPROM or flash memory), fiber optics, portable compact disk read only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination of the foregoing. In this disclosure, a computer-readable storage medium may be any tangible medium that contains or stores a program that can be used by or in conjunction with an instruction execution system, apparatus, or device. In the present disclosure, however, a computer-readable signal medium may include a data signal propagated in baseband or as part of a carrier wave with computer-readable program code embodied thereon. Such propagated data signals may take a variety of forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the foregoing. A computer-readable signal medium can also be any computer-readable medium other than a computer-readable storage medium that can transmit, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device . Program code embodied on a computer readable medium may be transmitted using any suitable medium including, but not limited to, electrical wire, optical fiber cable, RF (radio frequency), etc., or any suitable combination of the foregoing.

In some embodiments, the client and server can use any currently known or future developed network protocol such as HTTP (HyperText Transfer Protocol) to communicate, and can communicate with digital data in any form or medium Communication (eg, a communication network) interconnects. Examples of communication networks include local area networks ("LAN"), wide area networks ("WAN"), the Internet (eg, the Internet), and peer-to-peer networks (eg, ad hoc peer-to-peer networks), as well as any currently known or future development network of.

The above-mentioned computer-readable medium may be included in the above-mentioned terminal device; or may exist independently without being assembled into the terminal device.

The above-mentioned computer-readable medium carries one or more programs, and when the above-mentioned one or more programs are executed by the terminal device, the terminal device is made to: run an external display system on the terminal device, and run the external display system on the terminal device. Project the task interface of the external display device to display on the external display device; save the task information of the external display system running; if the external display system stops displaying and receives an instruction to display the external display system, run the external display system. and acquire task information that is run when the external display system stops displaying; and display a task interface corresponding to the task information through the external display device based on the task information.

Computer program code for performing operations of the present disclosure may be written in one or more programming languages, including but not limited to object-oriented programming languages—such as Java, Smalltalk, C++, and This includes conventional procedural programming languages - such as the "C" language or similar programming languages. The program code may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer, or entirely on the remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any kind of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computer (eg, using an Internet service provider through Internet connection).

The flowchart and block diagrams in the Figures illustrate the architecture, functionality, and operation of possible implementations of systems, apparatus and computer program products according to various embodiments of the present disclosure. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code that contains one or more logical functions for implementing the specified functions executable instructions. It should also be noted that, in some alternative implementations, the functions noted in the blocks may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It is also noted that each block of the block diagrams and/or flowchart illustrations, and combinations of blocks in the block diagrams and/or flowchart illustrations, can be implemented in dedicated hardware-based systems that perform the specified functions or operations , or can be implemented in a combination of dedicated hardware and computer instructions.

The units involved in the embodiments of the present disclosure may be implemented in a software manner, and may also be implemented in a hardware manner. Wherein, the name of the unit does not constitute a limitation of the unit itself under certain circumstances, for example, the information storage unit may be described as "a unit for storing task information of the operation of the external display system".

The functions described herein above may be performed, at least in part, by one or more hardware logic components. For example, without limitation, exemplary types of hardware logic components that may be used include: Field Programmable Gate Arrays (FPGAs), Application Specific Integrated Circuits (ASICs), Application Specific Standard Products (ASSPs), Systems on Chips (SOCs), Complex Programmable Logical Devices (CPLDs) and more.

In the context of the present disclosure, a machine-readable medium may be a tangible medium that may contain or store a program for use by or in connection with the instruction execution system, apparatus or device. The machine-readable medium may be a machine-readable signal medium or a machine-readable storage medium. Machine-readable media may include, but are not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, devices, or devices, or any suitable combination of the foregoing. More specific examples of machine-readable storage media would include one or more wire-based electrical connections, portable computer disks, hard disks, random access memory (RAM), read only memory (ROM), erasable programmable read only memory (EPROM or flash memory), fiber optics, compact disk read only memory (CD-ROM), optical storage, magnetic storage, or any suitable combination of the foregoing.

According to one or more embodiments of the present disclosure, a display control method is provided, which is applied to a terminal device. The display control method includes: running an external display system on the terminal device, and running an external display system running on the external display system. The task interface is projected to the external display device for display; the task information of the operation of the external display system is saved; if an instruction to display the external display system is received after the external display system stops displaying, the external display system is operated and Acquiring task information that runs when the external display system stops displaying; and displaying a task interface corresponding to the task information through the external display device based on the task information.

According to one or more embodiments of the present disclosure, the external display system runs based on a virtual screen; the saving task information of the external display system running includes: saving the task information in data corresponding to the virtual screen In the structure; the displaying the task interface corresponding to the task information through the external display device based on the task information includes: displaying the task interface corresponding to the task information in the virtual screen based on the task information ; project the content displayed in the virtual screen to the external display device.

According to one or more embodiments of the present disclosure, the terminal device is configured to be able to project the content displayed on the terminal screen to an external display device; the display control method further includes: in response to a preset screen switching display instruction, The terminal device projects the content displayed on the screen corresponding to the screen switching display instruction to the external display device for display.

According to one or more embodiments of the present disclosure, in response to a preset screen switching display instruction, the terminal device projects the content displayed on the screen corresponding to the screen switching display instruction to the external display device Displaying includes: when the preset screen switching display instruction is to display the content displayed on the terminal screen, projecting the content displayed on the terminal screen to an external display device; or, when the preset screen switching display instruction is When the content displayed on the virtual screen is displayed, the content displayed on the virtual screen is projected to the external display device.

The display control method provided according to one or more embodiments of the present disclosure further includes: acquiring an operation instruction of a user; and distributing an event corresponding to the operation instruction to the virtual screen, so as to respond to the operation instruction corresponding to the operation instruction. event to update the task interface displayed on the virtual screen.

The display control method provided according to one or more embodiments of the present disclosure further includes: if the instruction to display the external display system is not received within a preset period after the external display system stops displaying, moving the Remove the virtual screen and clear background processes and/or tasks corresponding to the external display system.

The display control method provided according to one or more embodiments of the present disclosure further includes: in response to the instruction to display the external display system, acquiring the resolution and/or screen density of the currently connected external display device; the Running the external display system includes: determining whether a virtual screen currently exists in the terminal device; if so, determining whether the resolution and/or screen density of the virtual screen are consistent with those of the external display device; if they are consistent, Then the external display system is run based on the virtual screen.

According to one or more embodiments of the present disclosure, if no virtual screen currently exists in the terminal device, a new virtual screen is created based on the resolution and/or screen density of the external display device.

According to one or more embodiments of the present disclosure, if it is determined that the resolution and/or screen density of the virtual screen is inconsistent with that of the currently connected display device, the virtual screen is removed, and based on the external display The resolution and/or screen density of the device creates a new virtual screen.

The display control method provided according to one or more embodiments of the present disclosure further includes: in response to an instruction to stop displaying the external display system, freezing at least one process corresponding to the external display system, and changing at least one process corresponding to the external display system. The foreground task corresponding to the external display system is switched to the background.

The display control method provided according to one or more embodiments of the present disclosure further includes:

In response to the instruction for displaying the external display system, at least one process corresponding to the external display system is thawed, and at least one background task corresponding to the external display system is switched to the foreground.

According to one or more embodiments of the present disclosure, a display control apparatus is provided, and the display control method includes: a first running unit, configured to run an external display system on a terminal device, and run an external display system running on the external display system. The task interface is projected to the external display device for display; the information storage unit is used to save the task information of the operation of the external display system; the second operation unit is used to display the external display system if it is received after the external display system stops displaying display system, then run the external display system and obtain task information that runs when the external display system stops displaying; the projection display unit is used to display the task information through the external display device based on the task information. The task interface corresponding to the information.

According to one or more embodiments of the present disclosure, a terminal is provided, comprising: at least one memory and at least one processor; wherein the memory is used to store program codes, and the processor is used to call the memory stored in the memory The program code is used to make the terminal execute the display control method provided according to one or more embodiments of the present disclosure.

The above description is merely a preferred embodiment of the present disclosure and an illustration of the technical principles employed. Those skilled in the art should understand that the scope of the disclosure involved in the present disclosure is not limited to the technical solutions formed by the specific combination of the above-mentioned technical features, and should also cover, without departing from the above-mentioned disclosed concept, the technical solutions formed by the above-mentioned technical features or Other technical solutions formed by any combination of its equivalent features. For example, a technical solution is formed by replacing the above features with the technical features disclosed in the present disclosure (but not limited to) with similar functions.

Additionally, although operations are depicted in a particular order, this should not be construed as requiring that the operations be performed in the particular order shown or in a sequential order. Under certain circumstances, multitasking and parallel processing may be advantageous. Likewise, although the above discussion contains several implementation-specific details, these should not be construed as limitations on the scope of the present disclosure. Certain features that are described in the context of separate embodiments can also be implemented in combination in a single embodiment. Conversely, various features that are described in the context of a single embodiment can also be implemented in multiple embodiments separately or in any suitable subcombination.

Although the subject matter has been described in language specific to the structural features and/or logical acts of apparatus, it is to be understood that the subject matter defined in the appended claims is not necessarily limited to the specific features or acts described above. Rather, the specific features and acts described above are merely example forms of implementing the claims.

Claims

A display control method, applied to terminal equipment, is characterized in that, comprising:

Running an external display system on the terminal device, and projecting the task interface running by the external display system to the external display device for display;

save the task information of the external display system running;

If an instruction to display the external display system is received after the external display system stops displaying, run the external display system and obtain task information that is run when the external display system stops displaying;

Display a task interface corresponding to the task information through the external display device based on the task information.
The display control method according to claim 1, wherein,

The external display system runs based on a virtual screen;

The storing task information of the external display system operation includes: saving the task information in a data structure corresponding to the virtual screen;

The displaying the task interface corresponding to the task information through the external display device based on the task information includes: displaying the task interface corresponding to the task information on the virtual screen based on the task information; displaying the task interface corresponding to the task information on the virtual screen; The content displayed on the virtual screen is projected to the external display device.
The display control method according to claim 2, wherein,

The terminal device is configured to be able to project the content displayed on the terminal screen to an external display device;

The display control method further includes: in response to a preset screen switching display instruction, the terminal device projects the content displayed on the screen corresponding to the screen switching display instruction to the external display device for display.
The display control method according to claim 3, wherein, in response to a preset screen switching display instruction, the terminal device projects the content displayed on the screen corresponding to the screen switching display instruction to the Displayed on an external display device, including:

When the preset screen switching display instruction corresponds to displaying the content displayed on the terminal screen, project the content displayed on the terminal screen to the external display device; or,

When the preset screen switching display instruction corresponds to displaying the content displayed on the virtual screen, project the content displayed on the virtual screen to the external display device.
The display control method of claim 2, further comprising:

Get the user's operation instructions;

Distributing the event corresponding to the operation instruction to the virtual screen, so as to update the task interface displayed on the virtual screen in response to the event corresponding to the operation instruction.
The display control method of claim 2, further comprising:

If the instruction to display the external display system is not received within a preset period of time after the external display system stops displaying, the virtual screen is removed, and the background processes and processes corresponding to the external display system are cleared. / or task.
The display control method of claim 2, further comprising:

In response to the instruction to display the external display system, obtain the resolution and/or screen density of the currently connected external display device;

The operation of the external display system includes:

determining whether a virtual screen currently exists in the terminal device;

If so, determine whether the resolution and/or screen density of the virtual screen are consistent with those of the external display device;

If they are consistent, the external display system is run based on the virtual screen.
The display control method according to claim 7, wherein,

If no virtual screen currently exists in the terminal device, a new virtual screen is created based on the resolution and/or screen density of the external display device.
The display control method according to claim 7, wherein,

If it is determined that the resolution and/or screen density of the virtual screen is inconsistent with that of the currently connected display device, the virtual screen is removed, and a new screen is created based on the resolution and/or screen density of the external display device virtual screen.
The display control method of claim 1, further comprising:

In response to the instruction to stop displaying the external display system, freeze at least one process corresponding to the external display system, and switch at least one foreground task corresponding to the external display system to the background.
The display control method of claim 10, further comprising:

In response to the instruction for displaying the external display system, at least one process corresponding to the external display system is thawed, and at least one background task corresponding to the external display system is switched to the foreground.
A display control device, characterized in that it includes:

a first running unit, used for running an external display system on the terminal device, and projecting the task interface running by the external display system to the external display device for display;

an information saving unit, used for saving task information of the external display system running;

A second running unit, configured to run the external display system and obtain task information that is run when the external display system stops displaying if an instruction to display the external display system is received after the external display system stops displaying ;

The projection display unit is configured to display a task interface corresponding to the task information through the external display device based on the task information.
A terminal, characterized in that it includes:

at least one memory and at least one processor;

Wherein, the memory is used to store program codes, and the processor is used to call the program codes stored in the memory to make the terminal execute the display control method according to any one of claims 1 to 11.
A non-transitory computer storage medium, characterized in that:

The non-transitory computer storage medium stores program codes, which, when executed by a computer device, cause the computer device to execute the display control method according to any one of claims 1 to 11 .