CN111741372A

CN111741372A - Screen projection method for video call, display device and terminal device

Info

Publication number: CN111741372A
Application number: CN202010651978.XA
Authority: CN
Inventors: 路锋; 高琨; 张磊
Original assignee: Qingdao Hisense Media Network Technology Co Ltd
Current assignee: Qingdao Hisense Media Network Technology Co Ltd; Juhaokan Technology Co Ltd
Priority date: 2020-07-08
Filing date: 2020-07-08
Publication date: 2020-10-02
Anticipated expiration: 2040-07-08
Also published as: CN111741372B

Abstract

The invention discloses a screen projection method, display equipment and terminal equipment for video call, wherein collected audio and video data of a home terminal user are uploaded to a server after the video call is started; responding to the click operation of the screen projection control, and displaying a device list; responding to the selection operation of the target equipment in the equipment list, and sending a screen projection request to the target equipment; in response to screen projection success information sent by the display equipment, stopping receiving audio and video data of each call object from the server, and only displaying a video picture of a home terminal user; the screen projection success information is sent after the target device responds to the screen projection request, accesses the virtual room according to the call ID, receives the audio and video data of each call object from the server according to the device ID, and displays the video picture of each call object. The terminal is used as the audio and video acquisition equipment of the display equipment, and the video call of the terminal is projected into the display equipment to be played, so that the display equipment is not limited by self configuration when the video call is carried out.

Description

Screen projection method for video call, display device and terminal device

Technical Field

The invention relates to the technical field of display equipment, in particular to a screen projection method for video call, display equipment and terminal equipment.

Background

The video call application can be installed in display equipment such as a television, and after the video call is started, a home-end user can join the virtual room and conduct video chat with friends in the virtual room through a large screen. The applicant finds that in the research process, the method is limited by the hardware configuration and the model of the display device, many display devices do not have a camera and a microphone at present, so that the display devices cannot acquire and upload audio and video data of a local user to a server, and friends at opposite ends cannot acquire the audio and video data of the local user from the server.

Disclosure of Invention

In order to solve the technical problem, the invention provides a screen projection method for video call, display equipment and terminal equipment.

A first aspect provides a terminal device, including:

a display;

a sound player;

the communicator is used for being in communication connection with the display device and the server;

a controller connected to the display, the sound player and the communicator, respectively, for performing:

after the video call is started, uploading the collected audio and video data of the home terminal user to a server;

responding to the click operation of the screen projection control, and controlling a display to display a device list;

responding to the selection operation of a target device in the device list, and sending a screen projection request to the target device; the screen projection request carries a call ID and an equipment ID corresponding to each call object in the virtual room;

responding to screen projection success information sent by the display equipment, stopping receiving audio and video data of each call object from the server, and controlling the display to only display a video picture of a home terminal user; and the screen projection success information is sent after the target equipment responds to the screen projection request, accesses a virtual room according to the call ID, receives the audio and video data of each call object from the server according to the equipment ID, and displays the video picture of each call object.

A second aspect provides a display device comprising:

a display;

a sound player;

the communicator is used for being in communication connection with the terminal equipment and the server;

a user interface for receiving an operation input by a user;

a controller respectively connected to the display, the sound player, the communicator, and the user interface, for performing:

receiving a screen projection request sent by terminal equipment, wherein the screen projection request is sent after the terminal equipment uploads collected audio and video data of a local end user to a server after a video call is started, a device list is displayed in response to clicking operation of a screen projection control, and selection operation of target devices in the device list is received; the screen projection request carries a call ID and an equipment ID corresponding to each call object in the virtual room;

accessing the virtual room according to the call ID; receiving audio and video data of each call object from a server according to the equipment ID, controlling a display to display a video picture of each call object, and controlling a sound player to play audio data of each call object;

and sending screen projection success information to the terminal equipment, wherein the screen projection success information is used for indicating the terminal equipment to stop receiving the audio and video data of each call object from the server and only displaying the video picture of the home terminal user.

The screen projection method for the video call provided by the third aspect is used for terminal equipment, and comprises the following steps:

responding to the click operation of the screen projection control, and displaying a device list;

in response to screen projection success information sent by the display equipment, stopping receiving audio and video data of each call object from the server, and only displaying a video picture of a home terminal user; and the screen projection success information is sent after the target equipment responds to the screen projection request, accesses a virtual room according to the call ID, receives the audio and video data of each call object from the server according to the equipment ID, and displays the video picture of each call object.

The screen projection method for the video call provided by the fourth aspect is used for a display device, and comprises the following steps:

accessing the virtual room according to the call ID; receiving audio and video data of each call object from a server according to the equipment ID, displaying a video picture of each call object, and playing the audio data of each call object;

For this reason, in the scheme provided in each embodiment of the present application, a terminal device (such as a mobile phone, a tablet computer, or the like) is used to start a video call, collect audio and video data of a local user, and upload the collected audio and video data to a server, so that the server can forward the audio and video data of the local user to a friend who is in call.

The video call screen projection processing logic is started by clicking the screen projection control, a user selects target equipment from an equipment list as display equipment for video call projected by a terminal, a screen projection request is sent to the target equipment, the target equipment can access a virtual room added by the terminal according to call ID carried in the screen projection request, so that the video call same as the terminal is started, and audio and video streams of all call objects are pulled from a server according to the equipment ID, so that video pictures of all call objects can be displayed on the display equipment, voices of all call objects can be played, and all call objects can synchronously receive audio and video data of a local user from the server. And then the display equipment sends screen projection success information to the terminal, and the terminal can stop pulling the audio and video streams of other call objects because the application of the display equipment terminal successfully pulls the streams, and the video picture of the local terminal user acquired by the terminal is displayed on the call interface.

The application is equivalent to the audio and video acquisition equipment with the terminal as the display equipment, and projects the video call started by the terminal to the application of the display equipment to play, even if the display equipment is not provided with a camera and a microphone, the application of the display equipment can realize the effective video call between the local user and the call object thereof, and the display improves the experience of the video call of the user. According to the method and the device, the function of screen projection is supported only by the display device, the configuration of the display device is not required to be changed, the display device is not limited by self configuration when a video call is carried out, and the application range is wider.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic diagram illustrating an operation scenario between a display device 200 and a control apparatus 100;

fig. 2 is a block diagram illustrating a hardware configuration of the display device 200 in fig. 1;

fig. 3 is a block diagram schematically showing a hardware configuration of the control apparatus 100 in fig. 1;

fig. 4 is a schematic diagram illustrating a software configuration in the display device 200 in fig. 1;

FIG. 5 is a schematic diagram illustrating an icon control interface display of an application on display device 200;

fig. 6 is a schematic diagram illustrating an interface when a terminal device starts a video call;

FIG. 7 is a schematic diagram illustrating a search device interface;

FIG. 8 is a diagram illustrating an exemplary display interface in the event of a timeout to open the device list;

FIG. 9 is an interface diagram illustrating a list of devices;

fig. 10 is a schematic diagram illustrating a video call interface after a terminal device sends a screen projection request;

FIG. 11 is a diagram illustrating a video call interface of a target device after screen projection on a display device;

FIG. 12 is a schematic diagram illustrating a video call interface of a target device after another screen is projected onto a display device;

fig. 13 is a schematic view exemplarily illustrating a video call interface after the terminal device receives the screen-casting success information;

fig. 14 is a schematic diagram illustrating an interface displayed by the terminal device when screen projection fails;

fig. 15 is a schematic diagram illustrating the structure of the terminal device;

FIG. 16 is an interactive logic diagram illustrating screen projection for a first type of video call;

FIG. 17 is an exemplary interactive logic diagram illustrating a second video call screen projection;

FIG. 18 is an interactive logic diagram illustrating a third video call screen shot;

an interactive logic diagram of a fourth video call screen shot is illustrated in fig. 19;

an interactive logic diagram of a fifth video call screen shot is illustrated in fig. 20;

an interactive logic diagram of a sixth video call screen shot is illustrated in fig. 21;

an interactive logic diagram of a seventh video call screen projection is illustrated in fig. 22.

Detailed Description

To make the objects, embodiments and advantages of the present application clearer, the following description of exemplary embodiments of the present application will clearly and completely describe the exemplary embodiments of the present application with reference to the accompanying drawings in the exemplary embodiments of the present application, and it is to be understood that the described exemplary embodiments are only a part of the embodiments of the present application, and not all of the embodiments.

All other embodiments, which can be derived by a person skilled in the art from the exemplary embodiments described herein without inventive step, are intended to be within the scope of the claims appended hereto. In addition, while the disclosure herein has been presented in terms of one or more exemplary examples, it should be appreciated that aspects of the disclosure may be implemented solely as a complete embodiment.

It should be noted that the brief descriptions of the terms in the present application are only for the convenience of understanding the embodiments described below, and are not intended to limit the embodiments of the present application. These terms should be understood in their ordinary and customary meaning unless otherwise indicated.

The terms "first," "second," "third," and the like in the description and claims of this application and in the above-described drawings are used for distinguishing between similar or analogous objects or entities and are not necessarily intended to limit the order or sequence of any particular one, Unless otherwise indicated. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein.

Furthermore, the terms "comprises" and "comprising," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a product or device that comprises a list of elements is not necessarily limited to those elements explicitly listed, but may include other elements not expressly listed or inherent to such product or device.

The term "module," as used herein, refers to any known or later developed hardware, software, firmware, artificial intelligence, fuzzy logic, or combination of hardware and/or software code that is capable of performing the functionality associated with that element.

The term "remote control" as used in this application refers to a component of an electronic device (such as the display device disclosed in this application) that is typically wirelessly controllable over a relatively short range of distances. Typically using infrared and/or Radio Frequency (RF) signals and/or bluetooth to connect with the electronic device, and may also include WiFi, wireless USB, bluetooth, motion sensor, etc. For example: the hand-held touch remote controller replaces most of the physical built-in hard keys in the common remote control device with the user interface in the touch screen.

The term "gesture" as used in this application refers to a user's behavior through a change in hand shape or an action such as hand motion to convey a desired idea, action, purpose, or result.

Fig. 1 is a schematic diagram illustrating an operation scenario between a display device and a control apparatus according to an embodiment. As shown in fig. 1, a user may operate the display device 200 through the mobile terminal 300 and the control apparatus 100.

In some embodiments, the control apparatus 100 may be a remote controller, and the communication between the remote controller and the display device includes an infrared protocol communication or a bluetooth protocol communication, and other short-distance communication methods, etc., and the display device 200 is controlled by wireless or other wired methods. The user may input a user command through a key on a remote controller, voice input, control panel input, etc. to control the display apparatus 200. Such as: the user can input a corresponding control command through a volume up/down key, a channel control key, up/down/left/right moving keys, a voice input key, a menu key, a power on/off key, etc. on the remote controller, to implement the function of controlling the display device 200.

In some embodiments, mobile terminals, tablets, computers, laptops, and other smart devices may also be used to control the display device 200. For example, the display device 200 is controlled using an application program running on the smart device. The application, through configuration, may provide the user with various controls in an intuitive User Interface (UI) on a screen associated with the smart device.

In some embodiments, the mobile terminal 300 may install a software application with the display device 200 to implement connection communication through a network communication protocol for the purpose of one-to-one control operation and data communication. Such as: the mobile terminal 300 and the display device 200 can establish a control instruction protocol, synchronize a remote control keyboard to the mobile terminal 300, and control the display device 200 by controlling a user interface on the mobile terminal 300. The audio and video content displayed on the mobile terminal 300 can also be transmitted to the display device 200, so as to realize the synchronous display function.

As also shown in fig. 1, the display apparatus 200 also performs data communication with the server 400 through various communication means. The display device 200 may be allowed to be communicatively connected through a Local Area Network (LAN), a Wireless Local Area Network (WLAN), and other networks. The server 400 may provide various contents and interactions to the display apparatus 200. Illustratively, the display device 200 receives software program updates, or accesses a remotely stored digital media library, by sending and receiving information, as well as Electronic Program Guide (EPG) interactions. The server 400 may be a cluster or a plurality of clusters, and may include one or more types of servers. Other web service contents such as video on demand and advertisement services are provided through the server 400.

The display device 200 may be a liquid crystal display, an OLED display, a projection display device. The particular display device type, size, resolution, etc. are not limiting, and those skilled in the art will appreciate that the display device 200 may be modified in performance and configuration as desired.

The display apparatus 200 may additionally provide an intelligent network tv function of a computer support function including, but not limited to, a network tv, an intelligent tv, an Internet Protocol Tv (IPTV), and the like, in addition to the broadcast receiving tv function.

A hardware configuration block diagram of a display device 200 according to an exemplary embodiment is exemplarily shown in fig. 2.

In some embodiments, at least one of the controller 250, the tuner demodulator 210, the communicator 220, the detector 230, the input/output interface 255, the display 275, the audio output interface 285, the memory 260, the power supply 290, the user interface 265, and the external device interface 240 is included in the display apparatus 200.

In some embodiments, a display 275 receives image signals originating from the first processor output and displays video content and images and components of the menu manipulation interface.

In some embodiments, the display 275, includes a display component for presenting a picture, and a drive component that drives the display of an image.

In some embodiments, the video content is displayed from broadcast television content, or alternatively, from various broadcast signals that may be received via wired or wireless communication protocols. Alternatively, various image contents received from the network communication protocol and sent from the network server side can be displayed.

In some embodiments, the display 275 is used to present a user-manipulated UI interface generated in the display apparatus 200 and used to control the display apparatus 200.

In some embodiments, a driver assembly for driving the display is also included, depending on the type of display 275.

In some embodiments, display 275 is a projection display and may also include a projection device and a projection screen.

In some embodiments, communicator 220 is a component for communicating with external devices or external servers according to various communication protocol types. For example: the communicator may include at least one of a Wifi chip, a bluetooth communication protocol chip, a wired ethernet communication protocol chip, and other network communication protocol chips or near field communication protocol chips, and an infrared receiver.

In some embodiments, the display apparatus 200 may establish control signal and data signal transmission and reception with the external control device 100 or the content providing apparatus through the communicator 220.

In some embodiments, the user interface 265 may be configured to receive infrared control signals from a control device 100 (e.g., an infrared remote control, etc.).

In some embodiments, the detector 230 is a signal used by the display device 200 to collect an external environment or interact with the outside.

In some embodiments, the detector 230 includes a light receiver, a sensor for collecting the intensity of ambient light, and parameters changes can be adaptively displayed by collecting the ambient light, and the like.

In some embodiments, the detector 230 may further include an image collector, such as a camera, etc., which may be configured to collect external environment scenes, collect attributes of the user or gestures interacted with the user, adaptively change display parameters, and recognize user gestures, so as to implement a function of interaction with the user.

In some embodiments, the detector 230 may also include a temperature sensor or the like, such as by sensing ambient temperature.

In some embodiments, the display apparatus 200 may adaptively adjust a display color temperature of an image. For example, the display apparatus 200 may be adjusted to display a cool tone when the temperature is in a high environment, or the display apparatus 200 may be adjusted to display a warm tone when the temperature is in a low environment.

In some embodiments, the detector 230 may also be a sound collector or the like, such as a microphone, which may be used to receive the user's voice. Illustratively, a voice signal including a control instruction of the user to control the display device 200, or to collect an ambient sound for recognizing an ambient scene type, so that the display device 200 can adaptively adapt to an ambient noise.

In some embodiments, as shown in fig. 2, the input/output interface 255 is configured to allow data transfer between the controller 250 and external other devices or other controllers 250. Such as receiving video signal data and audio signal data of an external device, or command instruction data, etc.

In some embodiments, the external device interface 240 may include, but is not limited to, the following: the interface can be any one or more of a high-definition multimedia interface (HDMI), an analog or data high-definition component input interface, a composite video input interface, a USB input interface, an RGB port and the like. The plurality of interfaces may form a composite input/output interface.

In some embodiments, as shown in fig. 2, the tuning demodulator 210 is configured to receive a broadcast television signal through a wired or wireless receiving manner, perform modulation and demodulation processing such as amplification, mixing, resonance, and the like, and demodulate an audio and video signal from a plurality of wireless or wired broadcast television signals, where the audio and video signal may include a television audio and video signal carried in a television channel frequency selected by a user and an EPG data signal.

In some embodiments, the frequency points demodulated by the tuner demodulator 210 are controlled by the controller 250, and the controller 250 can send out control signals according to user selection, so that the modem responds to the television signal frequency selected by the user and modulates and demodulates the television signal carried by the frequency.

In some embodiments, the broadcast television signal may be classified into a terrestrial broadcast signal, a cable broadcast signal, a satellite broadcast signal, an internet broadcast signal, or the like according to the broadcasting system of the television signal. Or may be classified into a digital modulation signal, an analog modulation signal, and the like according to a modulation type. Or the signals are classified into digital signals, analog signals and the like according to the types of the signals.

In some embodiments, the controller 250 and the modem 210 may be located in different separate devices, that is, the modem 210 may also be located in an external device of the main device where the controller 250 is located, such as an external set-top box. Therefore, the set top box outputs the television audio and video signals modulated and demodulated by the received broadcast television signals to the main body equipment, and the main body equipment receives the audio and video signals through the first input/output interface.

In some embodiments, the controller 250 controls the operation of the display device and responds to user operations through various software control programs stored in memory. The controller 250 may control the overall operation of the display apparatus 200. For example: in response to receiving a user command for selecting a UI object to be displayed on the display 275, the controller 250 may perform an operation related to the object selected by the user command.

In some embodiments, the object may be any one of selectable objects, such as a hyperlink or an icon. Operations related to the selected object, such as: displaying an operation connected to a hyperlink page, document, image, or the like, or performing an operation of a program corresponding to the icon. The user command for selecting the UI object may be a command input through various input means (e.g., a mouse, a keyboard, a touch pad, etc.) connected to the display apparatus 200 or a voice command corresponding to a voice spoken by the user.

As shown in fig. 2, the controller 250 includes at least one of a Random Access Memory 251 (RAM), a Read-Only Memory 252 (ROM), a video processor 270, an audio processor 280, other processors 253 (e.g., a Graphics Processing Unit (GPU), a central Processing Unit 254 (CPU), a Communication Interface (Communication Interface), and a Communication Bus 256(Bus), which connects the respective components.

In some embodiments, RAM251 is used to store temporary data for the operating system or other programs that are running, and in some embodiments, ROM252 is used to store instructions for various system boots.

In some embodiments, the ROM252 is used to store a Basic Input Output System (BIOS). The system is used for completing power-on self-test of the system, initialization of each functional module in the system, a driver of basic input/output of the system and booting an operating system.

In some embodiments, when the power-on signal is received, the display device 200 starts to power up, the CPU executes the system boot instruction in the ROM252, and copies the temporary data of the operating system stored in the memory to the RAM251 so as to start or run the operating system. After the start of the operating system is completed, the CPU copies the temporary data of the various application programs in the memory to the RAM251, and then, the various application programs are started or run.

In some embodiments, CPU processor 254 is used to execute operating system and application program instructions stored in memory. And executing various application programs, data and contents according to various interactive instructions received from the outside so as to finally display and play various audio and video contents.

In some example embodiments, the CPU processor 254 may comprise a plurality of processors. The plurality of processors may include a main processor and one or more sub-processors. A main processor for performing some operations of the display apparatus 200 in a pre-power-up mode and/or operations of displaying a screen in a normal mode. One or more sub-processors for one operation in a standby mode or the like.

In some embodiments, the graphics processor 253 is used to generate various graphics objects, such as: icons, operation menus, user input instruction display graphics, and the like. The display device comprises an arithmetic unit which carries out operation by receiving various interactive instructions input by a user and displays various objects according to display attributes. And the system comprises a renderer for rendering various objects obtained based on the arithmetic unit, wherein the rendered objects are used for being displayed on a display.

In some embodiments, the video processor 270 is configured to receive an external video signal, and perform video processing such as decompression, decoding, scaling, noise reduction, frame rate conversion, resolution conversion, image synthesis, and the like according to a standard codec protocol of the input signal, so as to obtain a signal that can be displayed or played on the direct display device 200.

In some embodiments, video processor 270 includes a demultiplexing module, a video decoding module, an image synthesis module, a frame rate conversion module, a display formatting module, and the like.

The demultiplexing module is used for demultiplexing the input audio and video data stream, and if the input MPEG-2 is input, the demultiplexing module demultiplexes the input audio and video data stream into a video signal and an audio signal.

And the video decoding module is used for processing the video signal after demultiplexing, including decoding, scaling and the like.

And the image synthesis module is used for carrying out superposition mixing processing on the GUI signal input by the user or generated by the user and the video image after the zooming processing by the graphic generator so as to generate an image signal for display.

The frame rate conversion module is configured to convert an input video frame rate, such as a 60Hz frame rate into a 120Hz frame rate or a 240Hz frame rate, and the normal format is implemented in, for example, an interpolation frame mode.

The display format module is used for converting the received video output signal after the frame rate conversion, and changing the signal to conform to the signal of the display format, such as outputting an RGB data signal.

In some embodiments, the graphics processor 253 and the video processor may be integrated or separately configured, and when the graphics processor and the video processor are integrated, the graphics processor and the video processor may perform processing of graphics signals output to the display, and when the graphics processor and the video processor are separately configured, the graphics processor and the video processor may perform different functions, respectively, for example, a GPU + frc (frame Rate conversion) architecture.

In some embodiments, the audio processor 280 is configured to receive an external audio signal, decompress and decode the received audio signal according to a standard codec protocol of the input signal, and perform noise reduction, digital-to-analog conversion, and amplification processes to obtain an audio signal that can be played in a speaker.

In some embodiments, video processor 270 may comprise one or more chips. The audio processor may also comprise one or more chips.

In some embodiments, the video processor 270 and the audio processor 280 may be separate chips or may be integrated together with the controller in one or more chips.

In some embodiments, the audio output, under the control of controller 250, receives sound signals output by audio processor 280, such as: the speaker 286, and an external sound output terminal of a generating device that can output to an external device, in addition to the speaker carried by the display device 200 itself, such as: external sound interface or earphone interface, etc., and may also include a near field communication module in the communication interface, for example: and the Bluetooth module is used for outputting sound of the Bluetooth loudspeaker.

The power supply 290 supplies power to the display device 200 from the power input from the external power source under the control of the controller 250. The power supply 290 may include a built-in power supply circuit installed inside the display apparatus 200, or may be a power supply interface installed outside the display apparatus 200 to provide an external power supply in the display apparatus 200.

A user interface 265 for receiving an input signal of a user and then transmitting the received user input signal to the controller 250. The user input signal may be a remote controller signal received through an infrared receiver, and various user control signals may be received through the network communication module.

In some embodiments, the user inputs a user command through the control apparatus 100 or the mobile terminal 300, the user input interface responds to the user input through the controller 250 according to the user input, and the display device 200 responds to the user input through the controller 250.

In some embodiments, a user may enter user commands on a Graphical User Interface (GUI) displayed on the display 275, and the user input interface receives the user input commands through the Graphical User Interface (GUI). Alternatively, the user may input the user command by inputting a specific sound or gesture, and the user input interface receives the user input command by recognizing the sound or gesture through the sensor.

In some embodiments, a "user interface" is a media interface for interaction and information exchange between an application or operating system and a user that enables conversion between an internal form of information and a form that is acceptable to the user. A commonly used presentation form of the User Interface is a Graphical User Interface (GUI), which refers to a User Interface related to computer operations and displayed in a graphical manner. It may be an interface element such as an icon, window, control, etc. displayed in the display of the electronic device, where the control may include a visual interface element such as an icon, button, menu, tab, text box, dialog box, status bar, navigation bar, Widget, etc.

The memory 260 includes a memory storing various software modules for driving the display device 200. Such as: various software modules stored in the first memory, including: at least one of a basic module, a detection module, a communication module, a display control module, a browser module, and various service modules.

The base module is a bottom layer software module for signal communication between various hardware in the display device 200 and for sending processing and control signals to the upper layer module. The detection module is used for collecting various information from various sensors or user input interfaces, and the management module is used for performing digital-to-analog conversion and analysis management.

For example, the voice recognition module comprises a voice analysis module and a voice instruction database module. The display control module is used for controlling the display to display the image content, and can be used for playing the multimedia image content, UI interface and other information. And the communication module is used for carrying out control and data communication with external equipment. And the browser module is used for executing a module for data communication between browsing servers. And the service module is used for providing various services and modules including various application programs. Meanwhile, the memory 260 may store a visual effect map for receiving external data and user data, images of various items in various user interfaces, and a focus object, etc.

Fig. 3 exemplarily shows a block diagram of a configuration of the control apparatus 100 according to an exemplary embodiment. As shown in fig. 3, the control device 100 includes a controller 110, a communication interface 130, a user input/output interface, a memory, and a power supply.

The control apparatus 100 is configured to control the display device 200 and may receive an input operation instruction of a user and convert the operation instruction into an instruction recognizable and responsive by the display device 200, serving as an interaction intermediary between the user and the display device 200. Such as: the user operates the channel up/down key on the control device 100, and the display device 200 responds to the channel up/down operation.

In some embodiments, the control device 100 may be a smart device. Such as: the control apparatus 100 may install various applications that control the display device 200 according to user demands.

In some embodiments, as shown in fig. 1, a mobile terminal 300 or other intelligent electronic device may function similar to the control apparatus 100 after an application for manipulating the display device 200 is installed. Such as: the user may implement the function of controlling the physical keys of the apparatus 100 by installing an application, various function keys or virtual buttons of a graphical user interface available on the mobile terminal 300 or other intelligent electronic device.

The controller 110 includes a processor 112 and RAM 113 and ROM 114, a communication interface 130, and a communication bus. The controller is used for controlling the operation of the control device 100, as well as the communication cooperation among the internal components and the external and internal data processing functions.

The communication interface 130 enables communication of control signals and data signals with the display apparatus 200 under the control of the controller 110. Such as: the received user input signal is transmitted to the display apparatus 200. The communication interface 130 may include at least one of a WiFi chip 131, a bluetooth module 132, an NFC module 133, and other near field communication modules.

A user input/output interface 140, wherein the input interface includes at least one of a microphone 141, a touch pad 142, a sensor 143, keys 144, and other input interfaces. Such as: the user can realize a user instruction input function through actions such as voice, touch, gesture, pressing, and the like, and the input interface converts the received analog signal into a digital signal and converts the digital signal into a corresponding instruction signal, and sends the instruction signal to the display device 200.

The output interface includes an interface that transmits the received user instruction to the display apparatus 200. In some embodiments, the interface may be an infrared interface or a radio frequency interface. Such as: when the infrared signal interface is used, the user input instruction needs to be converted into an infrared control signal according to an infrared control protocol, and the infrared control signal is sent to the display device 200 through the infrared sending module. The following steps are repeated: when the rf signal interface is used, a user input command needs to be converted into a digital signal, and then the digital signal is modulated according to the rf control signal modulation protocol and then transmitted to the display device 200 through the rf transmitting terminal.

In some embodiments, the control device 100 includes at least one of a communication interface 130 and an input-output interface 140. The control device 100 is configured with a communication interface 130, such as: the WiFi, bluetooth, NFC, etc. modules may transmit the user input command to the display device 200 through the WiFi protocol, or the bluetooth protocol, or the NFC protocol code.

And a memory 190 for storing various operation programs, data and applications for driving and controlling the control apparatus 100 under the control of the controller. The memory 190 may store various control signal commands input by a user.

And a power supply 180 for providing operation power support for each element of the control device 100 under the control of the controller. A battery and associated control circuitry.

In some embodiments, the system may include a Kernel (Kernel), a command parser (shell), a file system, and an application program. The kernel, shell, and file system together make up the basic operating system structure that allows users to manage files, run programs, and use the system. After power-on, the kernel is started, kernel space is activated, hardware is abstracted, hardware parameters are initialized, and virtual memory, a scheduler, signals and interprocess communication (IPC) are operated and maintained. And after the kernel is started, loading the Shell and the user application program. The application program is compiled into machine code after being started, and a process is formed.

Referring to fig. 4, in some embodiments, the system is divided into four layers, which are an Application (Applications) layer (abbreviated as "Application layer"), an Application Framework (Application Framework) layer (abbreviated as "Framework layer"), an Android runtime (Android runtime) and system library layer (abbreviated as "system runtime library layer"), and a kernel layer from top to bottom.

In some embodiments, at least one application program runs in the application program layer, and the application programs can be Window (Window) programs carried by an operating system, system setting programs, clock programs, camera applications and the like; or may be an application developed by a third party developer such as a hi program, a karaoke program, a magic mirror program, or the like. In specific implementation, the application packages in the application layer are not limited to the above examples, and may actually include other application packages, which is not limited in this embodiment of the present application.

The framework layer provides an Application Programming Interface (API) and a programming framework for the application program of the application layer. The application framework layer includes a number of predefined functions. The application framework layer acts as a processing center that decides to let the applications in the application layer act. The application program can access the resources in the system and obtain the services of the system in execution through the API interface.

As shown in fig. 4, in the embodiment of the present application, the application framework layer includes a manager (Managers), a Content Provider (Content Provider), a View System (View System), and the like, where the manager includes at least one of the following modules: an Activity Manager (Activity Manager) is used for interacting with all activities running in the system; the Location Manager (Location Manager) is used for providing the system service or application with the access of the system Location service; a Package Manager (Package Manager) for retrieving various information related to an application Package currently installed on the device; a Notification Manager (Notification Manager) for controlling display and clearing of Notification messages; a window manager (WindowManager) is used to manage the icons, windows, toolbars, wallpapers, and desktop components on the user interface.

In some embodiments, the activity manager is to: managing the life cycle of each application program and the general navigation backspacing function, such as controlling the exit of the application program (including switching the user interface currently displayed in the display window to the system desktop), opening, backing (including switching the user interface currently displayed in the display window to the previous user interface of the user interface currently displayed), and the like.

In some embodiments, the window manager is used to manage all window processes, such as obtaining display size, determining if there is a status bar, locking the screen, intercepting the screen, controlling display window changes (e.g., zooming out, dithering, distorting, etc.) and the like.

In some embodiments, the system runtime layer provides support for the upper layer, i.e., the framework layer, and when the framework layer is used, the android operating system runs the C/C + + library included in the system runtime layer to implement the functions to be implemented by the framework layer.

In some embodiments, the kernel layer is a layer between hardware and software. As shown in fig. 4, the core layer includes at least one of the following drivers: audio drive, display drive, bluetooth drive, camera drive, WIFI drive, USB drive, HDMI drive, sensor drive (such as fingerprint sensor, temperature sensor, touch sensor, pressure sensor, etc.), and so on.

In some embodiments, the kernel layer further comprises a power driver module for power management.

In some embodiments, software programs and/or modules corresponding to the software architecture of fig. 4 are stored in the first memory or the second memory shown in fig. 2 or 3.

In some embodiments, taking the magic mirror application (photographing application) as an example, when the remote control receiving device receives a remote control input operation, a corresponding hardware interrupt is sent to the kernel layer. The kernel layer processes the input operation into an original input event (including information such as a value of the input operation, a timestamp of the input operation, etc.). The raw input events are stored at the kernel layer. The application program framework layer obtains an original input event from the kernel layer, identifies a control corresponding to the input event according to the current position of the focus and uses the input operation as a confirmation operation, the control corresponding to the confirmation operation is a control of a magic mirror application icon, the magic mirror application calls an interface of the application framework layer to start the magic mirror application, and then the kernel layer is called to start a camera driver, so that a static image or a video is captured through the camera.

In some embodiments, for a display device with a touch function, taking a split screen operation as an example, the display device receives an input operation (such as a split screen operation) applied to a display by a user, and the kernel layer may generate a corresponding input event according to the input operation and report the event to the application framework layer. The window mode (such as multi-window mode) corresponding to the input operation, the position and size of the window and the like are set by an activity manager of the application framework layer. And the window management of the application program framework layer draws a window according to the setting of the activity manager, then sends the drawn window data to the display driver of the kernel layer, and the display driver displays the corresponding application interface in different display areas of the display.

In some embodiments, as shown in fig. 5, the application layer containing at least one application may display a corresponding icon control in the display, such as: a live television application icon control, a Video On Demand (VOD) application icon control, a media center application icon control, an application center icon control, a game application icon control, and the like.

In some embodiments, the live television application may provide live television via different signal sources. For example, a live television application may provide television signals using input from cable television, radio broadcasts, satellite services, or other types of live television services. And, the live television application may display video of the live television signal on the display device 200.

In some embodiments, a video-on-demand application may provide video from different storage sources. Unlike live television applications, video on demand provides a video display from some storage source. For example, the video on demand may come from a server side of the cloud storage, from a local hard disk storage containing stored video programs.

In some embodiments, the media center application may provide various applications for multimedia content playback. For example, a media center, which may be other than live television or video on demand, may provide services that a user may access to various images or audio through a media center application.

In some embodiments, an application center may provide storage for various applications. The application may be a game, an application, or some other application associated with a computer system or other device that may be run on the smart television. The application center may obtain these applications from different sources, store them in local storage, and then be operable on the display device 200.

The display device is provided with a sound collector and an image collector, wherein the image collector is used for collecting videos of a local user in real time in a video call process, the sound collector is used for collecting audios of the local user in real time in the video call process, then the audio and video data of the local user are sent to a server, and the audio and video data of each member in a virtual room can be uploaded to the server in such a form, so that the display device obtains the audio and video data of other members from the server to display and play at the local end in the video call process.

However, in practical application, the configuration and model of the display device are limited, and more display devices are not configured with an image collector and a sound collector, so that the display device cannot collect and upload audio and video data of the local user to the server, and the opposite-end friend cannot acquire the audio and video data of the local user from the server. In view of the above, the applicant designs a novel screen projection scheme which takes the terminal device as a sound collector and an image collector of the display device and projects the video call of the terminal to the display device for playing. In this embodiment of the application, the terminal device may be a mobile terminal 300 such as a smart phone and a tablet computer, or may also be a device such as a notebook computer configured with a camera and a microphone, and the display device may be a large-screen display device such as a television not configured with a camera and a microphone. First, the processing logic and UI changes in projecting a video call of a terminal to a display device will be described in detail below from the UI level and the software level.

It should be noted that the video call application needs to be installed in both the terminal device and the target device to be screen-projected, and in the application, the video call application in the terminal device is named as a first application, and the video call application in the target device is named as a second application.

After a user opens a first application installed in the terminal device, a video call can be initiated, or the video call can be answered on an incoming call interface, so that the video call invitation of an initiator is accepted. Fig. 6 is a video call interface displayed in a one-to-one manner, in which a full-screen window displays a video frame of an opposite-end call object, a video frame of a local-end user is displayed in a small-window mode, a sound player in a terminal can play audio data of the opposite-end call object, and the video call interface has a plurality of operation controls, such as a conventional screen switching control, a camera switching control, a first hang-up control, a camera state control, and a microphone state control. The switching picture control can switch video pictures of an opposite-end user and a home-end user, when the user clicks the switching picture control, the video picture of the home-end user can be switched to a full-screen mode, and the video picture of the opposite-end user can be switched to a small-window mode; the switching camera control can switch a front camera and a rear camera on the mobile phone, for example, in fig. 6, the front camera is currently used for collecting a user video, and when the switching camera control is clicked, the switching is switched to the rear camera for collecting the video; the first hang-up control is used for hanging up the current video call when being triggered, and the home terminal user quits from the virtual room; the camera state control is used for opening or closing a camera for currently acquiring a video; the microphone state control is used for opening and closing the microphone. On the basis, the screen projection control is additionally arranged at the designated position of the video call interface, for example, the screen projection control is displayed at the upper left corner of the interface in fig. 6, and when a user clicks the screen projection control, screen projection processing logic of the video call is started. The operation control arranged on the video call interface is not limited to that shown in the embodiment of the application.

When the video calls, the camera and the microphone are both in an open state, the terminal can acquire the audio and video data of the local user and upload the audio and video data to the virtual room of the server, so that other call objects in the virtual room can subscribe and receive the audio and video data of the local user in the virtual room, the video picture of the local user can be seen on the display device/terminal device of the call object, and the voice of the local user can be heard.

After the user clicks the screen projection control, the terminal device searches for the display device which can be used as the screen projection object in the local area network, at this time, a search device interface as shown in fig. 7 can be displayed, the user can be prompted to search for the device in the search device interface, the search device interface can also be provided with a cancel control, the user can stop searching for the device when clicking the cancel control in fig. 7, and the screen projection initiated at this time is invalid. The display device which can be used as the screen projection object is firstly in the same local area network environment with the terminal, secondly, the display device has the function of supporting screen projection, and secondly, the same video call application is also installed in the display device.

In some embodiments, after the user clicks the screen projection control, when the terminal searches for a display device capable of projecting a screen, some abnormal situations may occur: the first method is that if the display device capable of screen projection is not searched within a threshold time (for example, 10 seconds), that is, if the device list is opened overtime, the interface shown in fig. 8 may be displayed to prompt the user that the device capable of screen projection is not found, the interface in fig. 8 may be provided with a retry control and a cancel control, when the user clicks the retry control, the user starts the search device again, and when the user clicks the cancel control in fig. 8, the retry is cancelled, and the screen projection initiated this time is disabled; the second possibility is that in the first case, if the retry number exceeds the threshold number, the terminal determines that there is no display device capable of projecting screen in the local area network, and then, according to the terminal, a corresponding interface may be displayed, for example, AirPlay may be displayed in the device list for the terminal of the ios system, where AirPlay is a wireless screen projection technology adapted to the ios system, and the video or screen image of the ios terminal may be transferred to the display device supporting AirPlay; for another example, after determining that there is no screen-throwable display device in the local area network, a terminal of an Android (Android) system may automatically return to a video call page, or jump to some preset pages, for example, jump to a "screen-throwing assistant" page, where an operation guide for video call screen throwing or contents of some question help, question answering and the like may be displayed, specifically taking actual application as a standard.

By way of an example of WiFi search, a mobile phone initiating screen projection and a television serving as a projected object need to connect the same WiFi, for example, WiFi is measurement _6ABC, the mobile phone can search for a television in the same WiFi network environment, and list the searched television devices capable of establishing screen projection connection in an interface, when no abnormal condition exists in the process of searching for a device, that is, a screen-projectable device can be searched in a local area network, as shown in fig. 9, a device list can be displayed on an upper layer of a video call interface, the relative display position of the device list can be at the bottom of the video call interface, a prompt message such as "select a device to be projected" can be displayed on the top of the interface of the device list to guide the user to operate, two screen-projectable display devices are searched in fig. 9, the device IDs are respectively VIDDA-47DMR and AirPlay, the user selects one of the devices as a projected object according to actual requirements, for example, if the user clicks VIDDA-47DMR, the display device VIDDA-47DMR becomes the projected target device. And a cancel control can be arranged at the bottom of the equipment list, and when the user clicks 'cancel', the target equipment is not selected, and the screen projection is cancelled. In some embodiments, a screen-casting assistant control may be further set on the interface of the device list, and a user may jump to a corresponding page by clicking the "screen-casting assistant", where an operation guide for screen casting in a video call or contents of some question help, question answering, and the like may be displayed in the page, specifically based on actual application.

For example, when the user clicks the VIDDA-47DMR, the display device VIDDA-47DMR becomes a projected target device, and the terminal sends a screen projection request to the display device VIDDA-47DMR, where the screen projection request carries the call ID, the device ID and the device type corresponding to each call object in the virtual room. As shown in fig. 10, after sending a screen-casting request and before receiving screen-casting success information sent by a television, a screen-casting status area starts to be displayed on a video call interface, where the screen-casting status area displays a screen-casting control, a device ID of a target device, and a control for representing screen-casting status information, and the device ID in the screen-casting status area in fig. 10 is displayed as VIDDA-47DMR, and displays a control for representing screen-casting start, so as to prompt a user that the current screen-casting status information is "screen-casting start", which indicates that a screen-casting request has been initiated to the target device, and waits for a target device end to process a corresponding video call after responding to the screen-casting request.

After receiving and responding to a screen projecting request, a display device VIDDA-47DMR analyzes the screen projecting request to obtain information such as a call ID and a device ID corresponding to each call object in a virtual room, wherein the call ID is the ID of the virtual room, the virtual room ID is determined, the corresponding virtual room address is accessed, so that the call ID and the device ID are added into the virtual room for video call, because a terminal is accessed to the video call, when a target device end is projected, the target device end does not need to display an incoming call interface but directly defaults to receive and display the video call interface, the target device end pulls the audio and video stream of each call object to a server according to the device ID of each call object in the virtual room, so that the video picture of each call object is displayed at the target device end, the voice of each call object is played, and simultaneously the server sends the audio and video data uploaded by a user at the local end through a mobile phone to each call, therefore, the effective video call between the local user and each call object is realized. When one-to-one video call is carried out, the target equipment end can display the video picture of the opposite-end call object in a full screen manner; if the number of call objects is greater than or equal to 2, the video frames of each call object may be displayed according to a preset layout, for example, when there are 6 call objects, 6 video windows may be arranged according to an array layout of 2 rows and 3 columns, and each video window has a video frame of a call object, specifically based on an actual application.

It should be noted that the home terminal user described in this application is a user who uses a local terminal device to perform screen projection, and the call object is a call member other than the home terminal user in the virtual room.

As shown in fig. 11, after responding to the screen-casting request, the target device only receives the audio/video data of each call object sent by the server, and only displays the video screen of each call object on the video call interface, and when there is only one call object chatting with the home terminal user video, the target device may display the video screen of the call object in full screen mode. Since the target device end is not provided with the camera and the microphone, but uses the mobile phone as a device for acquiring the audio and video data of the local user by the target device end, the states of the camera and the microphone are adjusted at the terminal, no relevant operation control of the camera and the microphone is arranged on the video call interface of the target device end, and in fig. 11, a second quit screen-throwing control and a second hang-up control can be arranged on the video call interface of the target device end.

In some embodiments, the display device may further request the server to acquire the audio and video data of the local user uploaded by the terminal device according to the ID of the terminal device, as shown in fig. 12, so that the video call interface of the target device end not only displays the video frames of the call objects, but also displays the video frames of the local user, and can play the voice of the local user through the audio player of the target device end. In fig. 12, a one-to-one video call is taken as an example, the target device may display a video frame of an opposite-end call object in a full-screen mode, and a video frame of the local-end user is displayed in a small-window mode. And after the target equipment terminal successfully pulls the audio and video stream of each call object or successfully pulls the audio and video stream of each call object and the local terminal user and displays a corresponding video call interface on the display, the target equipment terminal is considered to successfully screen-cast, and the target equipment terminal sends screen-casting success information to the terminal.

When the terminal displays the interface of fig. 10, if screen-projection success information sent by the target device end is received, in some embodiments, the terminal may switch to the interface shown in fig. 13, at this time, a control representing the screen being projected is displayed in the screen-projection state area, so that the current screen-projection state information is updated to "screen being projected", which is used to prompt the user that the video call has been successfully projected from the terminal to the target device end, and in this state, a display switching device control and a first exit full-screen control may be newly added in the screen-projection state area.

In some embodiments, after the screen projection is successful, the home terminal user may click the switching device control to indicate that the user wants to cancel the video call projected on the display device VIDDA-47DMR, and initiate a screen projection connection again on another display device, at this time, the device list shown in fig. 9 may be called and displayed on the upper layer of the current video call interface of the terminal, the relative position may be at the bottom of the current video call interface for the user to select a new device (named as a first device in this application), after the selection of the first device is completed, the terminal may send a screen projection request to the newly switched first device, and then the terminal and the first device may implement, according to their respective built-in screen projection processing logics, projection of the video call of the terminal into the first device for playing and adaptively displaying UI changes, specifically referring to a screen projection process for a target device, and will not be described in detail herein. When switching the screen-casting device, the target device which originally casts the screen is replaced by the first device, so the target device needs to cancel the screen casting, in the specific implementation, the mobile phone can send first indication information to the target device, the target device receives and responds to the first indication information, the second application is controlled to stop receiving the audio and video data of each call object from the server, namely stopping pulling the audio and video stream of each call object, the current video call is quitted, the target device does not display the video call interface any more, and the screen casting connection is cancelled.

In some embodiments, after the screen projection is successful, the home terminal user can click the first exit screen projection control, that is, cancel the screen projection of the video call to the target device at the terminal side, and then send second indication information to the target device; the target device receives and responds to the second indication information, the second application is required to be controlled to stop acquiring the audio and video data of each call object from the server, namely, the audio and video stream of each call object is stopped to be pulled, the current video call is quitted, the target device does not display a video call interface any more, and first quitting screen throwing information is sent to the terminal when screen throwing connection is successfully cancelled; the terminal receives and responds to the first screen-dropping information, controls the first application to start and receive the audio and video data of each call object from the server, then displays the video pictures of the local user and each call object according to the received audio and video data, and plays the audio data of each call object, so that the terminal is restored to the video call state before screen dropping shown in the figure 6, and the local user can continue to carry out video call on the terminal.

In some embodiments, after the screen is successfully dropped, the user may further click the first hang-up control, that is, the current video call is hung up on the terminal side, and since the terminal has stopped receiving the audio and video data of each call object from the server before, the first application only needs to be controlled to directly quit the current video call, and at this time, the display device end is also required to synchronously hang up the current video call, and in the specific implementation, the terminal sends third indication information to the target device; and the target equipment receives and responds to the third indication information, controls the second application to stop receiving the audio and video data of each call object from the server, and synchronously quits the current video call, so that one end is hung up and the other end is hung up synchronously.

In some embodiments, after screen projection is successful, a home terminal user can click a second screen projection quitting control through a control device such as a remote controller and the like, namely, cancel video call screen projection from a target device side, control a second application to stop receiving audio and video data of each call object from a server, namely, stop pulling audio and video streams of each call object, quitting the current video call, so that the target device does not display a video call interface any more, and send second screen projection quitting information to a terminal when screen projection connection is successfully cancelled; the terminal receives and responds to the second screen projection quitting information, controls the first application to start and receive the audio and video data of each call object from the server, then displays the video pictures of the local user and each call object according to the received audio and video data, and plays the audio data of each call object, so that the terminal is restored to the video call state before screen projection shown in the figure 6, and the local user can continue to carry out video call on the terminal.

In some embodiments, after the screen is successfully dropped, the home terminal user may further click a second hang-up control on the target device, that is, the current video call is hung up on the target device side, the target device side controls the second application to stop receiving the audio and video data of each call object from the server, and hangs up the current video call, and certainly, the terminal also needs to hang up the video call synchronously, so the target device sends hang-up information to the terminal; and the terminal receives and responds to the hang-up information, controls the first application to quit the current video call and realizes that one end is hung up and the other end is hung up synchronously. When a home terminal user clicks the switching device control, the first screen-quitting and screen-throwing control or the first hanging-up control on the terminal, or clicks the second screen-quitting and screen-throwing control or the second hanging-up control on the target device, the target device end closes the video call interface and restores the video call interface to the playing interface before screen throwing.

In some embodiments, after the terminal sends the screen projection request to the target device, the target device may have some abnormal conditions that cause screen projection failure, for example, network connection in the target device is disconnected, so that the target device cannot receive the screen projection request, or for example, after the target device receives the screen projection request, the target device cannot receive audio and video data of each call object from the server, so that stream drawing failure is caused, the display device end cannot start a projected video call, and for example, the target device network is in a connected state, but screen projection cannot be caused by other factors of the device, and so on. If the terminal does not receive screen projection success information sent by the target device within the preset time, or the terminal receives screen projection failure information sent by the target device, as shown in fig. 14, the terminal returns to a video call state before the screen projection control is not clicked, and displays prompt box information on a video call interface, if the prompt box information is ' screen projection failure ', please try again ', after the user sees the prompt box information, the user can click the screen projection control again, then the screen projection process is repeated until the terminal receives screen projection success information fed back by the target device, the screen projection is successful, the terminal controls the first application to stop receiving audio and video data of each call object from a virtual room of the server, the terminal only displays a video picture of a user at the local terminal, and the video picture of the user at the local terminal can be displayed independently in a full-screen mode.

In some embodiments, the terminal device provided in the following application, as shown in fig. 15, includes a controller 310, a display 320, a sound player 330, and a communicator 340, where the communicator 340 is connected to the display 320, the sound player 330, and the communicator 340, respectively, fig. 15 takes the terminal device as a smart phone as an example, and components in the figure are only exemplary and are not limited to an actual installation location and structure in the terminal device. The display 320 is used for displaying a video call interface; the sound player 330 is used for playing the voice of each call object, such as a speaker; the communicator 340 is used to communicatively connect the terminal device with the display device 200 and the server 400, and may include a WiFi module, a bluetooth module, and the like. For the terminal equipment supporting the touch screen, a user can operate the screen through manual touch control or a touch pen, so that the terminal equipment senses, receives and responds to the operation input by the user; for terminal equipment which does not support a touch screen, input operation can be performed through input equipment such as a keyboard and a mouse.

As shown in fig. 16, after the home terminal user initiates or answers the video call, the controller 310 is configured to perform: after the video call is started, uploading the collected audio and video data of the home terminal user to a server; in response to the click operation of the screen projection control, controlling the display 320 to display a device list; responding to the selection operation of a target device in the device list, and sending a screen projection request to the target device; the screen projection request carries a call ID and an equipment ID corresponding to each call object in the virtual room; in response to screen projection success information sent by the display device, stopping receiving audio and video data of each call object from the server, and controlling the display 320 to only display a video picture of the home terminal user; and the screen projection success information is sent after the target equipment responds to the screen projection request, accesses a virtual room according to the call ID, receives the audio and video data of each call object from the server according to the equipment ID, and displays the video picture of each call object.

In the application, the terminal device and the target device to be screen-thrown can perform two-way communication through a local area network Socket, and the screen-throwing request, the screen-throwing success/failure information, and the related information during hanging up and quitting screen throwing can be transmitted in this way. The screen-casting request may be in the form of a JSON (JavaScript Object Notation), and carries the call ID of the current video call of the terminal, the device ID corresponding to each call Object in the virtual room, the device type, and other contents, where the device type is used to identify whether the device used by each call Object is a mobile phone or a television. It should be noted that after receiving the screen-casting success information sent by the target device, the terminal device controls the first application to stop pulling the audio/video stream of each call object in the virtual room, but still collects the audio/video data of the local user in real time and uploads the audio/video data to the server, so that each call object pulls the audio/video stream of the local user from the server.

Referring to the foregoing description, fig. 10, and 13, in some embodiments, as shown in fig. 17, the controller 310 is further configured to perform: after the screen projection request is sent and before screen projection success information is received, controlling the display 320 to display a control representing screen projection start in the screen projection state area; and after receiving the screen projection success information, controlling the display 320 to display a control representing that the screen is being projected in the screen projection state area, and controlling the display 320 to display a switching device control and a first screen quitting projection control. After the screen projection is successful, the screen projection state information in the screen projection state area is changed from ' screen projection starting in the process of ' screen projection to ' screen projection in the process of ' screen projection ', and two operation controls are newly added in the screen projection state area and are respectively a switching device control and a first screen exit projection control.

In some embodiments, referring to fig. 17, the controller 310 is further configured to perform: responding to the click operation of the switching device control, controlling a display 320 to display a device list, and sending first indication information to the target device, wherein the first indication information is used for indicating the target device to control a second application to stop receiving audio and video data of each call object from a server, and quitting the current video call; responding to a selection operation of a first device in the device list, and sending a screen projection request to the first device; the device list includes device IDs of display devices that can be screen-projected objects. And after receiving and responding to the screen projection request, the first equipment processes the projected video call according to the screen projection processing logic built in the first equipment terminal, wherein the screen projection processing logic of the first equipment is the same as that of the target equipment.

In some embodiments, as shown in fig. 18, the controller 310 is further configured to perform: responding to the click operation of the first screen quitting and screen throwing control, sending second indication information to the target equipment, wherein the second indication information is used for indicating the target equipment to control a second application to stop acquiring audio and video data of each call object from a server, quitting the current video call, and sending first screen quitting and screen throwing information to the terminal equipment; and in response to the first screen projection quitting information, controlling the first application to receive the audio and video data of each call object from the server, controlling the display 320 to display the video pictures of the local user and each call object, and controlling the sound player 330 to play the audio data of each call object.

In some embodiments, as shown in fig. 19, the controller 310 is further configured to perform: and responding to the click operation of the first hang-up control, controlling the first application to quit the current video call, and sending third indication information to the target equipment, wherein the third indication information is used for indicating the target equipment to control the second application to stop receiving the audio and video data of each call object from the server and synchronously quit the current video call. And when the current video call is hung up from the terminal equipment side, the target equipment is enabled to be synchronously hung up and quit the current video call through the third indication information.

In some embodiments, as shown in fig. 20, the controller 310 is further configured to perform: in response to receiving the second screen-quitting information sent by the target device, controlling the first application to receive audio and video data of each call object from the server, controlling the display 320 to display video pictures of the local user and each call object, and controlling the sound player 330 to play audio data of each call object; and the second quit screen-throwing information is sent after the target equipment responds to the click operation of the second quit screen-throwing control, controls the second application to stop receiving the audio and video data of each call object from the server and quits the current video call.

In some embodiments, as shown in fig. 21, the controller 310 is further configured to perform: in response to receiving hang-up information sent by the target equipment, controlling the first application to quit the current video call; and the hang-up information is sent after the target device responds to the click operation of the second hang-up control, controls the second application to stop receiving the audio and video data of each call object from the server and quits the current video call.

In some embodiments, as shown in fig. 22, the screen projection request further carries an ID of a terminal device, where the ID of the terminal device is used to enable the target device to receive audio and video data of the local user from a server according to the ID of the terminal device after responding to the screen projection request, so as to simultaneously display video frames of each call object and the local user, and play audio data of each call object and the local user.

After the target device joins the virtual room of the video call, the device ID corresponding to each call object in the virtual room and the ID of the terminal device can be simultaneously sent to the server, then the server sends the audio and video data of the local terminal user uploaded by the terminal device to the target device, and sends the audio and video data of each call object to the target device, so that the target device can simultaneously display the video pictures of the local terminal user and each call object and hear the audio data of the local terminal user and each call object. It should be noted that, in this embodiment, if the target device side quits screen projection or hangs up the video call, or the terminal device side switches the screen projection device and quits screen projection or hangs up the video call, the target device not only needs to stop receiving the audio and video data of each call object from the server, but also needs to stop receiving the audio and video data of the local user from the server, so as to ensure that the pull stream of each video call is completely quitted.

In some embodiments, the display device at least comprises a display 275, a sound player, a communicator 220, a user interface 265 and a controller 250, wherein the controller 250 is connected with the display 275, the sound player, the communicator 220 and the user interface 265 respectively, wherein the sound player can be a loudspeaker 286 or an external sound device, and the user interface 265 is used for receiving the operation input by the user and forwarding the operation input to the controller 250 for responding.

In correspondence with the video call screen projection logic performed on the terminal device side, the controller 250 is configured to perform: receiving a screen projection request sent by terminal equipment, wherein the screen projection request is sent after the terminal equipment uploads collected audio and video data of a local end user to a server after a video call is started, a device list is displayed in response to clicking operation of a screen projection control, and selection operation of target devices in the device list is received; the screen projection request carries a call ID and an equipment ID corresponding to each call object in the virtual room; accessing the virtual room according to the call ID; receiving audio and video data of each call object from the server according to the device ID, controlling the display 275 to display the video picture of each call object, and controlling the sound player to play the audio data of each call object; and sending screen projection success information to the terminal equipment, wherein the screen projection success information is used for indicating the terminal equipment to stop receiving the audio and video data of each call object from the server and only displaying the video picture of the home terminal user.

In some embodiments, the display device has already determined the ID of the local terminal device in the local area network according to communication with the terminal device, and therefore may exclude the ID of the local terminal device from the received device IDs, determine the ID of the peer device, and perform pull streaming according to the ID of the peer device after accessing the virtual room.

In some embodiments, the display device only pulls the audio and video data of the opposite terminal device, and does not pull the audio and video data uploaded by the local terminal device from the server.

In some embodiments, after the screen is successfully projected, the local terminal device uploads the acquired audio and video data, the audio and video data of the opposite terminal device is not pulled from the server, and the locally acquired audio and video data is not sent to the display device.

In some embodiments, the controller 250 is further configured to perform: in response to receiving first indication information sent by the terminal equipment, controlling the second application to stop receiving the audio and video data of each call object from the server and quitting the current video call; the first indication information is sent by the terminal equipment when responding to the click operation of the switching equipment control.

In some embodiments, the controller 250 is further configured to perform: in response to receiving second indication information sent by the terminal equipment, controlling a second application to stop acquiring audio and video data of each call object from the server and quitting the current video call; the second indication information is sent by the terminal equipment when responding to the click operation of the first quit screen-throwing control; and sending first screen quitting information to the terminal equipment, wherein the first screen quitting information is used for indicating the terminal equipment to control the first application to receive the audio and video data of each call object from the server, displaying the video pictures of the local user and each call object, and playing the audio data of each call object.

In some embodiments, the controller 250 is further configured to perform: responding to the click operation of the second screen-quitting projection control, controlling the second application to stop receiving the audio and video data of each call object from the server, and quitting the current video call; and sending second screen quitting and throwing information to the terminal equipment, wherein the second screen quitting and throwing information is used for indicating the terminal equipment to control the first application to receive the audio and video data of each call object from the server, displaying the video pictures of the local user and each call object and playing the audio data of each call object.

In some embodiments, the controller 250 is further configured to perform: in response to receiving third indication information sent by the terminal equipment, controlling the second application to stop receiving the audio and video data of each call object from the server and synchronously quitting the current video call; the third indication information is sent when the terminal device responds to the click operation of the first hang-up control and controls the first application to quit the current video call.

In some embodiments, the controller 250 is further configured to perform: responding to the click operation of the second hang-up control, controlling the second application to stop receiving the audio and video data of each call object from the server, and quitting the current video call; and sending hang-up information to the terminal equipment, wherein the hang-up information is used for indicating the terminal equipment to control the first application to quit the current video call.

In some embodiments, after responding to a screen projection request, audio and video data of the local user is received from a server according to the ID of the terminal equipment; the display 275 is controlled to simultaneously display the video pictures of the call objects and the home terminal user, and the audio player is controlled to play the audio data of the call objects and the home terminal user.

In some embodiments, a screen projection method for a video call is further provided, and the method is used for a terminal device, and includes:

step (A), after a video call is started, uploading collected audio and video data of a home terminal user to a server;

step (B), responding to the click operation of the screen projection control, and displaying a device list;

step (C), responding to the selection operation of the target equipment in the equipment list, and sending a screen projection request to the target equipment; the screen projection request carries a call ID and an equipment ID corresponding to each call object in the virtual room;

step (D), in response to screen projection success information sent by the display equipment, stopping receiving audio and video data of each call object from the server, and only displaying a video picture of a home terminal user; and the screen projection success information is sent after the target equipment responds to the screen projection request, accesses a virtual room according to the call ID, receives the audio and video data of each call object from the server according to the equipment ID, and displays the video picture of each call object.

The method may further include other program steps executed or configured by the controller 310 in the embodiments of the terminal device, which are not described herein again.

In some embodiments, another screen projection method for a video call is provided, where the screen projection method is used for a display device (a target device selected as a screen projection object) which should have a function of supporting a terminal to project the video call, and the method includes:

receiving a screen projection request sent by terminal equipment, wherein the screen projection request is sent after the terminal equipment uploads collected audio and video data of a local terminal user to a server after a video call is started, a device list is displayed in response to clicking operation of a screen projection control, and selection operation of target devices in the device list is received; the screen projection request carries a call ID and an equipment ID corresponding to each call object in the virtual room;

step (F), accessing the virtual room according to the call ID; receiving audio and video data of each call object from a server according to the equipment ID, displaying a video picture of each call object, and playing the audio data of each call object;

and (G) sending screen projection success information to the terminal equipment, wherein the screen projection success information is used for indicating the terminal equipment to stop receiving the audio and video data of each call object from the server and only displaying the video picture of the local user.

The method may further include other program steps executed or configured by the controller 250 in the embodiments of the terminal device, which are not described herein again.

The server 400 in the present application mainly relates to establishing a virtual room when initiating a video call, and receiving and forwarding audio and video data of each call member in the virtual room, and certainly, the functional configuration of the server end in the video call is not limited to that described in the embodiments of the present application. Based on the foregoing embodiments, those skilled in the art can adapt the settings of the processing logic, UI and related operation controls to adapt to other possible application scenarios/usage requirements. In the application, the UI drawings of the terminal devices are drawn by taking a smart phone as an example, the UI of other types of terminal devices are basically similar to the interface display of the smart phone, and the UI drawings in the application are only exemplary and are subject to practical application.

Those skilled in the art will readily appreciate that the techniques of the embodiments of the present invention may be implemented as software plus a required general purpose hardware platform. In a specific implementation, the present invention further provides a computer storage medium, where the computer storage medium may store a program, and when the computer storage medium is located in a terminal device, the program may be executed by a screen projection method of a video call, where the screen projection method is configured to be executed by the controller 310; when the computer storage medium is located in the display apparatus 200, the program when executed may include a screen projection method of a video call that the controller 250 is configured to perform. The computer storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM) or a Random Access Memory (RAM).

The same and similar parts in the embodiments in this specification may be referred to one another, and detailed description of some embodiments is omitted.

Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This invention is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. The specification and examples are to be regarded in an illustrative manner only and are not intended to limit the scope of the present invention. With a true scope and spirit of the invention being indicated by the following claims.

Claims

1. A terminal device, comprising:

a display;

a sound player;

2. The terminal device of claim 1, wherein the controller is further configured to perform:

after sending a screen projection request and before receiving screen projection success information, controlling a display to display a control representing screen projection starting in a screen projection state area;

and after receiving the screen projection success information, controlling the display to display a control representing the screen projection in the screen projection state area, and controlling the display to display a switching equipment control and a first screen quitting control.

3. The terminal device of claim 2, wherein the controller is specifically configured to perform:

responding to the click operation of the switching equipment control, controlling a display to display an equipment list, and sending first indication information to the target equipment, wherein the first indication information is used for indicating the target equipment to control a second application to stop receiving audio and video data of each call object from a server and quit the current video call, and the second application is a video call application in the target equipment;

responding to a selection operation of a first device in the device list, and sending a screen projection request to the first device; the device list includes device IDs of display devices that can be screen-projected objects.

4. The terminal device of claim 2, wherein the controller is further configured to perform:

responding to a click operation of the first screen quitting and throwing control, sending second indication information to the target equipment, wherein the second indication information is used for indicating the target equipment to control a second application to stop acquiring audio and video data of each call object from a server, quitting the current video call, and sending first screen quitting and throwing information to the terminal equipment, wherein the second application is a video call application in the target equipment;

and responding to the first screen quitting and throwing information, controlling a first application to receive audio and video data of each call object from the server, controlling a display to display video pictures of a local user and each call object, and controlling a sound player to play audio data of each call object, wherein the first application is a video call application in the terminal equipment.

5. The terminal device of claim 1, wherein the controller is further configured to perform:

responding to the received second screen quitting information sent by the target equipment, controlling a first application to receive audio and video data of each call object from a server, controlling a display to display video pictures of a local user and each call object, and controlling a sound player to play audio data of each call object, wherein the first application is a video call application in the terminal equipment;

and the second quit screen-throwing information is sent after the target equipment responds to the click operation of a second quit screen-throwing control, controls a second application to stop receiving the audio and video data of each call object from the server and quits the current video call, and the second application is the video call application in the target equipment.

6. The terminal device of claim 1, wherein the controller is further configured to perform:

responding to a click operation of a first hang-up control, controlling a first application to quit a current video call, and sending third indication information to the target device, wherein the third indication information is used for indicating the target device to control a second application to stop receiving audio and video data of all call objects from a server and synchronously quit the current video call, the first application is a video call application in the terminal device, and the second application is a video call application in the target device.

7. The terminal device of claim 1, wherein the controller is further configured to perform:

in response to receiving hang-up information sent by the target equipment, controlling the first application to quit the current video call;

the hang-up information is sent after the target device responds to a click operation of a second hang-up control, controls a second application to stop receiving audio and video data of each call object from the server and quits the current video call, wherein the first application is a video call application in the terminal device, and the second application is a video call application in the target device.

8. The terminal device according to claim 1, wherein the screen projection request further carries an ID of the terminal device, and the ID of the terminal device is used to enable the target device to receive audio and video data of the home terminal user from a server according to the ID of the terminal device after responding to the screen projection request, so as to simultaneously display video pictures of each call object and the home terminal user, and play audio data of each call object and the home terminal user.

9. A display device, comprising:

a display;

a sound player;

a user interface for receiving an operation input by a user;

10. The display device according to claim 9, wherein the controller is further configured to perform:

in response to receiving first indication information sent by the terminal equipment, controlling the second application to stop receiving the audio and video data of each call object from the server and quitting the current video call; the first indication information is sent by the terminal device in response to a click operation on a switching device control, wherein the second application is a video call application in the target device.

11. The display device according to claim 9, wherein the controller is further configured to perform:

in response to receiving second indication information sent by the terminal equipment, controlling a second application to stop acquiring audio and video data of each call object from the server and quitting the current video call; the second indication information is sent by the terminal equipment when responding to the click operation of the first screen quitting and throwing control, wherein the second application is a video call application in the target equipment;

and sending first quit screen throwing information to the terminal equipment, wherein the first quit screen throwing information is used for indicating the terminal equipment to control a first application to receive audio and video data of each call object from the server, display video pictures of a local user and each call object and play audio data of each call object, and the first application is a video call application in the terminal equipment.

12. The display device according to claim 9, wherein the controller is further configured to perform:

responding to the click operation of a second screen-quitting projection control, controlling a second application to stop receiving the audio and video data of each call object from the server, and quitting the current video call, wherein the second application is a video call application in the target equipment;

and sending second screen quitting and throwing information to the terminal equipment, wherein the second screen quitting and throwing information is used for indicating the terminal equipment to control the first application to receive the audio and video data of each call object from the server, display the video pictures of the local user and each call object and play the audio data of each call object, and the first application is the video call application in the terminal equipment.

13. The display device according to claim 9, wherein the controller is further configured to perform:

in response to receiving third indication information sent by the terminal equipment, controlling the second application to stop receiving the audio and video data of each call object from the server and synchronously quitting the current video call; the third indication information is sent when the terminal device responds to the click operation of the first hang-up control and controls the first application to quit the current video call, wherein the first application is a video call application in the terminal device, and the second application is a video call application in the target device.

14. The display device according to claim 9, wherein the controller is further configured to perform:

responding to the click operation of the second hang-up control, controlling the second application to stop receiving the audio and video data of each call object from the server, and quitting the current video call;

and sending hang-up information to the terminal equipment, wherein the hang-up information is used for indicating the terminal equipment to control a first application to quit the current video call, the first application is a video call application in the terminal equipment, and the second application is a video call application in the target equipment.

15. The display device according to claim 9, wherein the screen-casting request further carries an ID of the terminal device, and the controller is further configured to:

after responding to the screen projection request, receiving audio and video data of the home terminal user from a server according to the ID of the terminal equipment;

and controlling a display to simultaneously display the video pictures of each call object and the home terminal user, and controlling a sound player to play the audio data of each call object and the home terminal user.

16. A screen projection method for video call is used for terminal equipment, and is characterized by comprising the following steps:

17. A screen projection method for a video call is used for a display device, and is characterized by comprising the following steps: