CN112954425A

CN112954425A - Display device and camera control method

Info

Publication number: CN112954425A
Application number: CN202110156378.0A
Authority: CN
Inventors: 刘晋; 姜俊厚; 司洪龙; 李保成
Original assignee: Hisense Visual Technology Co Ltd
Current assignee: Hisense Visual Technology Co Ltd
Priority date: 2020-08-21
Filing date: 2021-02-04
Publication date: 2021-06-11

Abstract

The application discloses display device and camera control method, when the display device controller receives the instruction that the camera is closed to the application and the instruction that the camera is opened to the application in succession, control the camera and maintain at present angle of locating to avoid because the application switches to and leads to meaningless descending and rising control. The continuous reception of the command for closing the camera and the command for opening the camera means that the time interval for receiving the two commands is less than the preset time.

Description

Display device and camera control method

The present application claims priority from chinese patent application, entitled "display device and camera control method," filed on 21/8/2020 by the chinese patent office, application number 202010851738.4, the entire contents of which are incorporated herein by reference.

Technical Field

The application relates to the technical field of display equipment, in particular to display equipment and a camera control method.

Background

The display device may provide a user with a play screen such as audio, video, pictures, and the like. Nowadays, display devices can provide users with not only live television program content received through data broadcasting, but also various applications and service content such as network video, network games, and the like.

In order to further meet the personalized requirements of users, in the related art, a camera is configured on display equipment, local image data acquired by the camera is acquired through a controller of the display equipment, and is processed and displayed, and functions of video chatting, photographing, video recording and the like are realized on the display equipment.

Disclosure of Invention

The application provides a display device and a camera control method, which aim to solve the problem of controlling the angle of a camera.

In a first aspect, the present application provides a display device comprising:

a display for displaying a user interface;

the camera is used for collecting images, and the angle of the camera can be adjusted;

a controller connected to the camera for:

when an instruction for closing the camera by the application and an instruction for opening the camera by the application are continuously received, the camera is controlled to be maintained at the current angle, and the continuous reception of the instruction for closing the camera by the application and the instruction for opening the camera by the application means that the time interval for receiving the two instructions is less than the preset time length.

In a second aspect, the present application also provides a display device, comprising:

a display for displaying a user interface;

the controller, the controller is connected with cloud platform camera, the controller is used for:

when an instruction for closing the camera by the application and an instruction for opening the camera by the application are continuously received, the camera is controlled to be maintained at the current angle, and the continuous reception of the instruction for closing the camera by the application and the instruction for opening the camera by the application means that the time interval for receiving the two instructions is less than the preset time length. In a third aspect, the present application further provides a display device, comprising:

a display for displaying a user interface;

a controller connected to the camera for:

responding to an instruction of starting the camera by the first application, and adjusting the angle of the camera from a first preset angle to a second preset angle;

responding to an instruction of closing the camera by the first application, and monitoring whether the instruction of starting the camera by the first application or the second application is received within a preset time length;

if an instruction that the first application or the second application starts the camera is received within a preset time length, maintaining the camera at the second preset angle;

and if the instruction that the first application or the second application starts the camera is not received within the preset time length, adjusting the angle of the camera to a first preset angle from a second preset angle.

In a fourth aspect, the present application further provides a camera control method, where the method includes:

In a fifth aspect, the present application further provides a camera control method, where the method includes:

According to the technical scheme, when the command of closing the camera by the application and the command of opening the camera by the application are continuously received, the camera is controlled to be maintained at the current angle, and therefore the situation that the application is switched to cause meaningless falling and rising control is avoided. The continuous reception of the command for closing the camera and the command for opening the camera means that the time interval for receiving the two commands is less than the preset time.

Drawings

In order to more clearly explain the technical solution of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious to those skilled in the art that other drawings can be obtained according to the drawings without any creative effort.

Fig. 1 is a schematic diagram illustrating an operational scenario between a display device and a control apparatus according to some embodiments;

a block diagram of a hardware configuration of a display device 200 according to some embodiments is illustrated in fig. 2;

a block diagram of the hardware configuration of the control device 100 according to some embodiments is illustrated in fig. 3;

a schematic diagram of a software configuration in a display device 200 according to some embodiments is illustrated in fig. 4;

FIG. 5 illustrates an icon control interface display diagram of an application in the display device 200, according to some embodiments;

FIG. 6a is a schematic view of a display device shown in some embodiments of the present application;

FIG. 6b is a schematic view of a display device shown in some embodiments of the present application;

fig. 7a to 7f are schematic views of the camera shown in some embodiments of the present application in different angles;

fig. 8 is a flowchart illustrating a camera control method provided by the present application;

fig. 9 is a flowchart illustrating a camera control method provided by the present application.

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, the display apparatus 200 includes at least one of a controller 250, a tuner demodulator 210, a communicator 220, a detector 230, input/output interfaces (first to nth interfaces 255), a display 275, an audio output interface 285, a memory 260, a power supply 290, a user interface 265, and an external device interface 240.

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 screen assembly for presenting a picture, and a driving assembly 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 apparatus 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 interfaces (first to nth interfaces 255) are configured to enable data transmission between the controller 250 and an external other device or other controller 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, RAM 251 is used to store temporary data for the operating system or other programs that are running

In some embodiments, ROM 252 is used to store instructions for various system boots.

In some embodiments, the ROM 252 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 ROM 252, and copies the temporary data of the operating system stored in the memory to the RAM 251 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 RAM 251, 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, a window, a control, etc. displayed in the display screen of the electronic device, where the control may include a visual interface element such as an icon, a button, a menu, a tab, a text box, a dialog box, a status bar, a navigation bar, a 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 apparatus 100 includes a controller 110, a communication interface 130, a user input/output interface, a memory, and a power supply source.

The control device 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 responds to the channel up and down operation by operating the channel up and down keys on the control device 100.

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 apparatus 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 device 100 after installing an application that manipulates the display device 200. Such as: the user may implement the functions of controlling the physical keys of the device 100 by installing applications, 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 to control the operation of the control device 100, as well as the communication cooperation between 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 provided 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.

A memory 190 for storing various operation programs, data and applications for driving and controlling the control apparatus 200 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 operational power support to the various elements 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 resource in the system and obtain the service 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), 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 (Window Manager) is used to manage the icons, windows, toolbars, wallpapers, and desktop components on a 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 configured to manage all window processes, such as obtaining a display size, determining whether a status bar is available, locking a screen, intercepting a screen, controlling a display change (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) that a user acts on a display screen, 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 screen.

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: the system comprises a live television application icon control, a video on demand 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 angle at which the camera is located, such as its pitch angle in the vertical direction or its angle in the horizontal direction, is related to the field of view of the camera. The tripod head is a supporting device for mounting and fixing the camera, and is divided into a fixed tripod head and an electric tripod head, wherein the electric tripod head is suitable for large-range scanning and shooting, and the field range of the camera can be enlarged. The electric pan-tilt can be a horizontal rotating pan-tilt which can only rotate left and right, and also can be an omnibearing pan-tilt which can rotate left and right and can rotate up and down. Generally, two motors are installed in the omni-directional pan/tilt head, and are respectively used for driving the pan/tilt head to rotate in the horizontal direction and the vertical direction so as to change the angle of the camera. The camera mounted on the electric pan-tilt is also called pan-tilt camera.

As shown in fig. 2, the display device 200 comprises a detector 230, the detector 230 comprising a camera, which may be a pan-tilt-camera 231 as shown in fig. 6 a.

As shown in fig. 2, the display apparatus 200 includes an external device interface 240, and an external device can access the display apparatus 200 through the external device interface 240. As shown in fig. 6b, the external pan/tilt head camera 231 may be connected to the controller 220 of the display apparatus through the external device interface 240.

To built-in or external display device who has the cloud platform camera, utilize the display device controller to control the cloud platform, can make the camera shoot under a plurality of angles.

The camera can be designed according to the requirement at the rotatable limit angle of the horizontal direction and/or the vertical direction. Illustratively, the rotatable angle range of the camera in the horizontal direction may be 0 ° to 120 °, where 0 ° and 120 ° are respectively the limit angles corresponding to the two rotational directions (leftward and rightward) in the horizontal direction; the rotatable angle of the camera in the vertical direction may be 0 ° to 180 °, where 0 ° and 180 ° are respectively the limit angles corresponding to the two rotational directions (upward and downward) in the vertical direction.

Fig. 7a to 7f are schematic angle diagrams of the camera exemplarily shown in the present application, where fig. 7a exemplarily shows a state where a pitch angle of the camera in a vertical direction is 0 °, fig. 7b exemplarily shows a state where a pitch angle of the camera in a vertical direction is 90 °, fig. 7c exemplarily shows a state where a pitch angle of the camera in a vertical direction is 105 °, fig. 7d exemplarily shows a state where a horizontal angle of the camera in a horizontal direction is 0 °, fig. 7e exemplarily shows a state where a horizontal angle of the camera in a horizontal direction is 60 °, and fig. 7f exemplarily shows a state where a horizontal angle of the camera in a horizontal direction is 120 °.

It should be noted that the cameras referred to in the following embodiments of the present application are all pan-tilt cameras unless otherwise specified.

In some embodiments, the camera is tilted up, which means that the tilt angle of the camera in the vertical direction is greater than a preset minimum angle; the camera falls, which means that the pitching angle of the camera in the vertical direction is smaller than a preset maximum angle. The preset minimum angle and the preset maximum angle may be the same angle value or different angle values. For example, the state when the camera is tilted up may be as shown in fig. 7b, and the state when the camera is dropped may be as shown in fig. 7 a.

Referring to fig. 7b, in a time period when the user does not use the camera, if the camera is always in a tilt-up state, this is easy to cause an illusion that the camera is working for the user in the user experience angle, thereby bringing trouble to the user. In addition, when the user operates the camera by mistake or the system is wrong, the camera can be started by mistake under the condition that the user does not know the camera, the privacy of the user is easy to leak, and the user experience is not facilitated.

In some solutions that may solve the above problem, when an application associated with a camera is switched to a foreground application, or when the foreground application calls an interface for starting the camera, the camera is controlled to tilt up; and when the display equipment is powered off or the application related to the camera exits from the foreground, controlling the camera to land.

That is, the camera can be raised only when it is needed and then dropped after use. In this implementation, a meaningless landing and lifting occurs for foreground applications when switching between applications that are both associated with the camera. Particularly, when the foreground application is switched into the second application by the first application, because the first application withdraws from the foreground application, the camera is controlled to descend, and then, because the second application enters the foreground application, the camera is controlled to ascend, so that the camera is controlled to ascend, and therefore, the ascending process after descending is meaningless, the working times of the motor can be increased, the service life of the motor is prolonged, the waiting time of a user can be prolonged, and the user experience is not facilitated.

In order to avoid the occurrence of meaningless elevation and descent control, an embodiment of the present application provides a display device, as shown in fig. 2 and fig. 6a or 6b, including a display 275 for displaying a user interface, a camera 231 for capturing a local image, and a controller 220 connected to the camera, wherein the controller 220 is configured to perform: and when an instruction for closing the camera by the application and an instruction for opening the camera by the application are continuously received, controlling the camera to be maintained at the current angle, wherein the continuous reception of the instruction for closing the camera by the application and the instruction for opening the camera by the application means that the time interval for receiving the two instructions is less than the preset time length. For example, an instruction for opening the camera by the first application or the second application is received within a preset time after an instruction for closing the camera by the first application is received. For another example, the instruction that the first application closes the camera is received within a preset time period after the instruction that the first application opens the camera is received. Wherein the first application and the second application are different applications associated with the camera.

In some embodiments, when an instruction that the first application or the second application opens the camera is received within a preset time period after the instruction that the first application closes the camera is received, the camera is controlled to be maintained at a second preset angle. When the instruction that the first application or the second application opens the camera is not received within the preset time after the instruction that the first application closes the camera is received, the angle of the camera is adjusted to a first preset angle.

In particular implementation, the controller 220 is configured to perform the steps shown in fig. 8:

step 801, when the camera is in a closed state, receiving an instruction of a first application to start the camera.

And step 802, responding to an instruction of the first application to start the camera, starting the camera, and adjusting the angle of the camera from a first preset angle to a second preset angle.

The first preset angle is a pitching angle of the camera after landing, and the second preset angle is a pitching angle of the camera after pitching up.

And 803, receiving an instruction of closing the camera by the first application when the camera is in an open state. And sending an instruction for closing the camera when the first application is closed or exits from the foreground.

Step 804, responding to an instruction of closing the camera by the first application, closing the camera, and monitoring whether the instruction of opening the camera by the first application or the second application is received within a preset time length;

step 805, if an instruction for the first application or the second application to start the camera is received within the preset time length, the camera is started, and the camera is maintained at the second preset angle. And after the first application or the second application is started or switched to a foreground, sending an instruction for starting the camera.

Step 806, if the instruction for the first application or the second application to start the camera is not received within the preset time, adjusting the angle of the camera to a first preset angle. In some implementation scenarios, when the first application is started, an instruction for instructing to start a camera is sent to a Cameraservice service of the system; after receiving the instruction of starting the camera by the first application, the CameraService calls a method resettorecordided () provided by the CameraControl service and used for controlling the camera to tilt up to a second preset angle.

Then, in one case, if the first application is closed or exits from the foreground, the first application sends an instruction indicating to close the camera to the CameraService; the Camera service starts timing after receiving an instruction of closing the camera by the first application, and simultaneously monitors whether the instruction of opening the camera by the first application or the second application is received; if the first application or the second application is started or enters a foreground, the first application or the second application sends an instruction for instructing to start a camera to a Cameraservice service; if an instruction for starting the camera by the first application or the second application is received before the timing duration reaches a preset duration (such as 3s), the process is ended; if the instruction of starting the camera by the first application or the second application is not received before the timing duration reaches the preset duration, stopping timing after the timing duration reaches the preset duration, and calling a method reset () provided by the Camera control service and used for controlling the camera to fall to a first preset angle to control the camera to fall.

In one example, the "magic mirror" application and the "chat" application are both camera-associated applications. After a user opens the magic mirror application or switches the magic mirror application to a foreground for running through operation, the magic mirror application sends an instruction for instructing to start a camera to a Cameraservice service of the system; after receiving the instruction, the CameraService calls a method resettorcade () provided by the CameraControl service and used for controlling the camera to tilt up to a second preset angle. The user switches the magic mirror application to the foreground to run through operation, and switches the chat application to the foreground to run, wherein the magic mirror application sends an instruction for instructing to close the camera to the CameraServer service, the chat application sends an instruction for instructing to open the camera to the CameraServer service, and the CameraServer service closes the camera and starts to time after receiving the closing instruction of the magic mirror application. If the starting instruction of the magic mirror application is received before the timing duration reaches a preset duration (such as 3s), the camera is kept to be started, and the camera is kept at a second preset angle; if the opening instruction of the magic mirror application is not received before the timing duration reaches the preset duration, the camera is closed, and meanwhile the camera is controlled to fall to a first preset angle.

As can be seen from the embodiment shown in fig. 8, if the CameraService receives an instruction for the first application or the second application to start the camera within the preset time period for the first application to close the camera, the camera is not controlled to fall, but the camera is maintained at the second preset angle, so that the situation that the camera is switched to the second preset angle is avoided.

In other embodiments, when the camera service receives an instruction of closing the camera by the first application, a landing task is generated and added to a task queue, wherein the landing task refers to a task of adjusting the angle of the camera to a first preset angle; when the waiting time of the landing task to be executed in the task queue reaches a preset time, reading and executing the landing task, namely adjusting the angle of the camera to the first preset angle; and when the Cameraservice receives an instruction of opening the camera by the first application or the second application, deleting the to-be-executed landing task in the task queue.

In these embodiments, since the waiting time of the landing task to be executed in the task queue reaches the preset time, the landing task to be executed will be read and executed by the CameraService, so that if the landing task to be executed still exists in the task queue when the CameraService receives the instruction for opening the camera by the first application or the second application, the waiting time of the landing task to be executed is necessarily shorter than the preset time, and the landing task to be executed in the task queue is deleted, so that the landing task to be executed can be prevented from being read and executed when the waiting time reaches the preset time. That is, if the CameraService receives an instruction that the first application or the second application starts the camera within the preset time length for the first application to close the camera, the camera is not controlled to fall, but the camera is maintained at the second preset angle, so that meaningless falling and pitching control caused by switching of the application is avoided.

It should be understood that when the CameraService receives an instruction of an application to start the camera in the case that there is no landing task to be executed in the task queue, the camera is started, and the angle of the camera is adjusted from a first preset angle to a second preset angle.

In some embodiments, when an instruction for closing the camera by the first application is received within a preset time period after the instruction for opening the camera by the first application is received, the camera is controlled to be maintained at a first preset angle. When the command that the first application closes the camera is not received within the preset time after the command that the first application opens the camera is received, the angle of the camera is adjusted to a second preset angle.

In particular implementation, the controller 220 is further configured to perform the steps shown in fig. 9:

step 901, when the camera is in an open state, receiving an instruction of a first application to close the camera.

And step 902, responding to an instruction of closing the camera by the first application, closing the camera, and adjusting the angle of the camera from a second preset angle to a first preset angle.

Step 903, when the camera is in a closed state, receiving an instruction of the first application to open the camera. And when the first application enters into foreground operation, sending an instruction for opening the camera.

Step 904, responding to an instruction of a first application to open a camera, opening the camera, and monitoring whether the instruction of the first application to close the camera is received within a preset time length;

step 905, if an instruction of closing the camera by the first application is received within a preset time, closing the camera, and maintaining the camera at a first preset angle. And when the first application is closed or exits from the foreground, sending an instruction for closing the camera.

Step 906, if an instruction for closing the camera by the first application is not received within the preset time length, adjusting the angle of the camera to a second preset angle.

As can be seen from the embodiment shown in fig. 9, if the instruction for closing the camera by the first application is received within the preset time period for opening the camera by the first application, the camera is not controlled to tilt up, but the camera is maintained at the first preset angle, so as to avoid meaningless falling and tilt up control.

In some embodiments, when the camera service receives an instruction of opening a camera by a first application, a tilt task is generated and added to a task queue, wherein the tilt task refers to a task of adjusting the angle of the camera to a second preset angle; when the waiting time of the pitching task to be executed in the task queue reaches a preset time, reading and executing the pitching task, namely adjusting the angle of the camera to the second preset angle; and when the Cameraservice receives the instruction of closing the camera by the first application, deleting the to-be-executed overhead task in the task queue.

In these embodiments, since the waiting time of the tilt task to be executed in the task queue reaches the preset time, the tilt task to be executed will be read and executed by the CameraService, so that if the tilt task to be executed still exists in the task queue when the CameraService receives the instruction that the first application closes the camera, the waiting time of the tilt task to be executed is necessarily less than the preset time, and the tilt task to be executed in the task queue is deleted, so that the tilt task to be executed can be prevented from being read and executed when the waiting time reaches the preset time. That is, if the CameraService receives the command that the first application closes the camera within the preset duration that the first application opens the camera, the camera is not controlled to tilt up, but the camera is maintained at the first preset angle, so that meaningless falling and tilt up control are avoided.

In specific implementation, the present invention further provides a computer storage medium, where the computer storage medium may store a program, and the program may include some or all of the steps in each embodiment of the camera control method provided by the present invention when executed. The storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM) or a Random Access Memory (RAM).

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. Based on such understanding, the technical solutions in the embodiments of the present invention may be essentially or partially implemented in the form of a software product, which may be stored in a storage medium, such as ROM/RAM, magnetic disk, optical disk, etc., and includes several instructions for enabling a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the method according to the embodiments or some parts of the embodiments.

The same and similar parts in the various embodiments in this specification may be referred to each other. In particular, for the embodiments, since they are substantially similar to the method embodiments, the description is simple, and the relevant points can be referred to the description in the method embodiments.

The above-described embodiments of the present invention should not be construed as limiting the scope of the present invention.

Claims

1. A display device, comprising:

a display for displaying a user interface;

a controller connected to the camera for:

2. The display device according to claim 1, wherein the controlling the camera to be maintained at the current angle when the instruction for closing the camera by the application and the instruction for opening the camera by the application are continuously received comprises:

and when an instruction of opening the camera by the first application or the second application is received within a preset time after the instruction of closing the camera by the first application is received, controlling the camera to be maintained at a second preset angle.

3. The display device of claim 2, wherein the controller is further configured to:

when the instruction that the first application or the second application opens the camera is not received within the preset time after the instruction that the first application closes the camera is received, the angle of the camera is adjusted to a first preset angle.

4. The display device according to any one of claims 1 to 3, wherein the controlling the camera to be maintained at the current angle when the instruction to turn off the camera and the instruction to turn on the camera are continuously received comprises:

when an instruction of closing the camera by the first application is received within a preset time after the instruction of opening the camera by the first application is received, the camera is controlled to be maintained at a first preset angle.

5. The display device of claim 4, wherein the controller is further configured to:

when the command that the first application closes the camera is not received within the preset time after the command that the first application opens the camera is received, the angle of the camera is adjusted to a second preset angle.

6. The display device according to claim 1, wherein the controlling the camera to be maintained at the current angle when the instruction for closing the camera by the application and the instruction for opening the camera by the application are continuously received comprises:

when an instruction of closing the camera by the first application is received, adding a landing task into a task queue, wherein the landing task is used for adjusting the angle of the camera to a first preset angle;

reading the landing task and executing the landing task when the waiting time of the landing task to be executed in the task queue reaches a preset time;

and when an instruction of opening the camera by the first application or the second application is received, deleting the to-be-executed landing task in the task queue.

7. The display device according to claim 6, wherein the controller is further configured to, before adding the drop task to the task queue upon receiving the instruction of the first application to close the camera:

and when an instruction of a first application to start the camera is received under the condition that the to-be-executed landing task does not exist in the task queue, adjusting the angle of the camera from the first preset angle to a second preset angle.

8. The display device according to claim 6, wherein the controlling the camera to maintain the current angle when the instruction to close the camera and the instruction to open the camera are continuously received, further comprises:

when an instruction of opening a camera by a first application is received, adding a pitching task into a task queue, wherein the pitching task is used for adjusting the angle of the camera to a second preset angle;

reading the pitching task and executing the pitching task when the waiting time of the pitching task to be executed in the task queue reaches a preset time;

and when an instruction of closing the camera by the first application is received, deleting the to-be-executed tilt-up task in the task queue.

9. A display device, comprising:

a display for displaying a user interface;

10. A display device, comprising:

a display for displaying a user interface;

a controller connected to the camera for:

11. A camera control method, comprising:

12. A camera control method, comprising: