CN113807375A

CN113807375A - Display device

Info

Publication number: CN113807375A
Application number: CN202010538074.6A
Authority: CN
Inventors: 杨鲁明; 王卫明; 王大勇
Original assignee: Hisense Visual Technology Co Ltd
Current assignee: Hisense Visual Technology Co Ltd
Priority date: 2020-06-12
Filing date: 2020-06-12
Publication date: 2021-12-17
Also published as: WO2021248671A1

Abstract

An embodiment of the present application shows a display device, which may include: display, camera and controller. The controller is used for controlling the display to display the visual chart when receiving a starting instruction for vision test, wherein the visual chart at least comprises a first identifier, and the first identifier is an identifier which needs to be identified by a user; when the first identification is displayed on the display, the controller controls the camera to collect a first image, matches the first image with the first identification, and generates a vision test result of the user according to the matching result. The display device shown in the embodiment of the application can help a user to perform vision test, and the user experience is good.

Description

Display device

Technical Field

The application relates to the technical field of social television, in particular to a display device.

Background

Currently, since a display device can provide a user with a play picture such as audio, video, picture, and the like, it is receiving a wide attention of the user. With the development of big data and artificial intelligence, the functional requirements of users on display devices are increasing day by day. For example, a user wants to perform a vision test using the display device. The current display device cannot realize the scene. Therefore, there is a strong need for a display device that can help a user perform vision tests.

Disclosure of Invention

A first aspect of embodiments of the present application shows a display device, including:

a display device is arranged on the base plate,

the camera is used for collecting images;

the controller is used for responding to a received starting instruction and controlling the display to display the visual chart, the visual chart at least comprises a first identifier, and the first identifier is an identifier which needs to be identified by a user;

when the display displays the first identifier, controlling the camera to acquire a first image, wherein the first image is acquired after the display displays the first identifier;

and generating a vision test result according to the matching result of the first identifier and the first image.

A second aspect of embodiments of the present application shows a display device, including:

a display;

receiving a recognition voice input by a user, wherein the recognition voice is the user voice shown by the user according to the first identification;

and generating a vision test result according to the first identification and the matching result of the recognized voice.

A third aspect of embodiments of the present application shows a display device including:

a display;

the camera is used for collecting images;

the first controller is used for responding to the received starting instruction and controlling the camera to be started; when the display displays the first mark, controlling the camera to acquire a first image; transmitting the first image to a second controller;

the second controller is used for responding to the received starting instruction and controlling the display to display the visual chart, the visual chart at least comprises a first identifier, and the first identifier is an identifier which needs to be identified by a user; and generating a vision test result according to the matching result of the first identifier and the first image.

A fourth aspect of the embodiments of the present application shows a display device, including:

a display;

the camera is used for collecting images;

the second controller is used for responding to the received starting instruction and controlling the display to display the visual chart, and the visual chart at least comprises a first identifier; sending the direction information corresponding to the first identifier to a first controller;

the first controller is used for responding to the received starting instruction and controlling the camera to be started; when the display displays the first mark, controlling the camera to acquire a first image; and generating a vision test result according to the direction information and the matching result of the first image.

A fifth aspect of embodiments of the present application shows a display device, including:

a display;

a camera;

the first controller is used for responding to the received starting instruction and sending the visual chart to the second controller, wherein the visual chart at least comprises a first identifier, and the first identifier is an identifier which needs to be identified by a user; when the display displays the first mark, controlling the camera to acquire a first image; generating a vision test result according to the matching result of the first identifier and the first image;

and the second controller controls the display to display the visual chart.

It can be seen from the foregoing technical solutions that the embodiment of the present application illustrates a display device, where the display device may include: the visual testing system comprises a display, a camera and a controller, wherein the camera is used for collecting images, the controller is used for controlling the display to display a visual chart when a starting instruction for visual testing is received, the visual chart at least comprises a first identifier, and the first identifier is an identifier which needs to be identified by a user; when the first identification is displayed on the display, the controller controls the camera to collect the first image, matches the first image with the first identification, and generates a vision test result of the user according to the matching result. The display device shown in the embodiment of the application can help a user to perform vision test, and the user experience is good.

Drawings

In order to more clearly illustrate the embodiments of the present application or the implementation manner in the related art, a brief description will be given below of the drawings required for the description of the embodiments or the related art, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art according to the drawings.

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. 6 is an interaction flow diagram illustrating components of a display device in accordance with one possible embodiment;

FIG. 7A is a schematic diagram of a display interface shown in accordance with one possible embodiment;

FIG. 7B is a schematic diagram of a display interface shown in accordance with one possible embodiment;

FIG. 7C is a schematic diagram of a display interface shown in accordance with one possible embodiment;

FIG. 7D is a schematic diagram of a display interface shown in accordance with one possible embodiment;

FIG. 8A is a schematic diagram illustrating a display interface according to one possible embodiment;

FIG. 8B is a schematic diagram of a display interface shown in accordance with one possible embodiment;

FIG. 9A is a schematic diagram of a display interface shown in accordance with one possible embodiment;

FIG. 9B is a schematic diagram of a display interface shown in accordance with one possible embodiment;

FIG. 10 is a schematic diagram of a display interface shown in accordance with one possible embodiment;

FIG. 11 is a schematic diagram illustrating a prompt interface, according to some embodiments;

FIG. 12 is a simulation diagram illustrating a testing process according to one possible embodiment;

FIG. 13 is a schematic diagram of a display interface shown in accordance with one possible embodiment;

FIG. 14 is a schematic diagram of a display interface shown in accordance with one possible embodiment;

FIG. 15 is a simulation diagram illustrating a testing process according to one possible embodiment;

FIG. 16 is an interaction flow diagram illustrating components of a display device in accordance with one possible embodiment;

FIG. 17 is a block diagram illustrating the structure of a display device according to one possible embodiment;

FIG. 18 is an interaction flow diagram illustrating components of a display device in accordance with one possible embodiment;

FIG. 19 is an interaction flow diagram illustrating components of a display device in accordance with one possible embodiment;

fig. 20 is an interaction flow diagram illustrating components of a display device according to one possible embodiment.

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 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 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, 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.

With the development of big data and artificial intelligence, the functional requirements of users on display devices are increasing day by day. For example, a user wants to perform a vision test using the display device. The current display device cannot realize the scene. Therefore, there is a strong need for a display device that can help a user perform vision tests.

The embodiment of the application shows a display device capable of testing eyesight of a user, and the display device can comprise: fig. 6 shows an interaction process of the camera, the controller and the display, where fig. 6 is an interaction flowchart of each component of the display device according to a feasible embodiment.

In the technical solution shown in the embodiment of the present application, the display is configured to display a corresponding interface based on control of the controller. For example, in an application scenario of video playing, the display may display a video interface based on the control of the controller; in an application scene of the video call, the display can display a related interface of the video call based on the control of the controller; in the application scene of the game, the display can display the relevant interface of the game based on the control of the controller; the display can display the visual chart based on the control of the controller in the vision test scene applicable to the embodiment of the application.

The camera is used for collecting images;

in the technical scheme shown in the embodiment of the application, the camera is configured to start, close or collect images based on the control of the controller. For example, in an application scenario of a video call, the camera may collect a call video based on the control of the controller, and the camera is always in an image collection state during the video call. Particularly, in a "vision test" scenario to which the embodiment of the present application is applied, the camera may acquire a user image (the user image may also be referred to as a first image or a second image in this embodiment) based on the control of the controller.

The controller is configured to execute step S101, in response to receiving a start instruction, to control the display to display an eye chart, where the eye chart includes at least a first identifier, and the first identifier is an identifier that a user needs to identify;

the starting instruction in the application is a starting instruction for pulling up a vision test function of the display device. In some feasible embodiments, the starting instruction may be a starting instruction sent by a user in a form of voice; the sending process of the start instruction may be: the user outputs a wake-up word in advance, then outputs a starting instruction, and establishes connection between the user and the controller based on the wake-up word, so that the controller can make a corresponding response to the starting instruction output by the user. For example, the user inputs a wake word "congregation classmates" and an activation instruction "activate vision test functions". In some feasible embodiments, the starting instruction may be a starting instruction sent by a user through a remote controller; the sending process of the start instruction may be: the user can touch the related control of the remote controller, so that the controller can send a corresponding starting instruction, and the controller can make a corresponding response to the starting instruction. For example, a user may trigger the remote controller to send a start instruction to the controller by touching a control a of the remote controller.

The visual acuity chart shown in the embodiment of the present application is a chart for measuring visual acuity. The visual acuity chart may be any one of an international standard visual acuity chart, a logarithmic visual acuity chart, and a Landolt (Landolt) peripheral visual acuity chart. Typically, the eye chart is composed of a plurality of marks with different sizes and different opening directions, wherein the marks can be 'E' or 'C'. It should be noted that the present embodiment only shows two kinds of identifiers by way of example, and in the process of practical application, the identifiers are not limited to the above two forms.

In a feasible example, the marks with the same volume in the visual chart are positioned in the same row to form a visual line; from top to bottom in the vertical direction, the volume of the displayed marks in each row is gradually reduced, and each vision row corresponds to one vision grade. Specifically, referring to fig. 7A, fig. 7A is a display interface for displaying an eye chart according to one possible embodiment. As can be seen from the eye chart shown in fig. 7A, the marks (E) having the same volume are located in the same row to form the visual line; from top to bottom in the vertical direction, the volume of the marks displayed in each row is gradually reduced; each vision row corresponds to a vision level.

The technical scheme includes that the mark comprises a first mark and a second mark, the first mark is a mark which needs to be recognized by a user, and the second mark is a mark which does not need to be recognized by the user. In the process of displaying, the display mode of the second identifier is different from the display mode of the first identifier. For example, the first identifier may be displayed in a black font, the second identifier may be displayed in a gray font, and specifically, refer to fig. 7A, where identifier 1 in fig. 7A is the first identifier, and the remaining identifiers are the second identifiers. For another example, the first identifier may be determined by a position of a cursor, where an identifier corresponding to the position where the cursor is located is the first identifier, and the remaining identifiers are the second identifiers, specifically, refer to fig. 7B, where identifier 1 in fig. 7B is the first identifier, and the remaining identifiers are the second identifiers. It should be noted that the embodiments of the present application are merely exemplary to show two display manners of the first identifier, and in a practical process, the display manner of the first identifier is not limited to the two display manners.

In a feasible embodiment, only one row of identifiers may be displayed in the eye chart, and specifically, fig. 7C is a display interface for displaying the eye chart, which is shown in fig. 7C according to a feasible embodiment. The technical scheme includes that the mark comprises a first mark and a second mark, the first mark is a mark which needs to be recognized by a user, and the second mark is a mark which does not need to be recognized by the user. In the process of displaying, the display mode of the second identifier is different from the display mode of the first identifier. For example, the first identifier may be displayed in a black font, the second identifier may be displayed in a gray font, and specifically, refer to fig. 7C, where identifier 1 in fig. 7C is the first identifier, and the remaining identifiers are the second identifiers.

In a feasible embodiment, only the first identifier may be displayed in the eye chart, specifically, refer to fig. 7D, and fig. 7D is a display interface for displaying the eye chart according to a feasible embodiment. In the technical scheme shown in the embodiment of the application, only the first identifier is shown in the visual chart.

S102, when the display shows the first identifier, controlling the camera to collect a first image, wherein the first image is an image collected after the display shows the first identifier;

and when the display displays the first mark, controlling the camera to acquire a first image. Specifically, after the controller controls the display to display the preset time after the action of the eye chart is sent out, the controller sends a control signal for controlling the camera to collect the first image to the camera, so that the camera collects the image of the user at the moment. The preset time may be determined according to the rendering time of the visual chart, for example, the preset time may be 0.1ms in a feasibility real-time.

S103, generating a vision test result according to the matching result of the first identifier and the first image.

In the technical scheme shown in the embodiment of the application, the first image at least comprises a direction indicated by a user. The controller identifies the direction indicated by the user in the first image, then calculates the matching degree of the direction indicated by the user and the direction of the first mark, and generates a vision test result according to the matching result.

For the eye charts shown in fig. 7A and 7B, the test procedure may be: the controller selects the identifier with the largest volume as a first identifier; and if the first image is matched with the first identifier, selecting any identifier in the next row of the currently displayed identifier as the first identifier until the first image is not matched with the first identifier, and obtaining a vision test result.

The display interface during the test can be referred to in 8A. The controller determines the identifier with the largest volume in the eye chart as the first identifier, and the corresponding display interface may refer to the interface 11 in fig. 8A. When the display displays the interface 11, the user makes a corresponding action on the content displayed on the interface 11, and the controller sends a collecting instruction to the camera so that the camera collects the corresponding first image at the moment. The controller identifies the user indication direction in the first image, then calculates the matching degree of the user indication direction and the direction of the first identification, if the first image is matched with the first identification, any identification in the next line of the currently displayed identification is selected as the first identification, the corresponding display interface can refer to the interface 12 in the figure 8A, when the display displays the interface 12, the user makes corresponding action on the content displayed by the interface 12, the controller sends a collection instruction to the camera, so that the camera collects the corresponding first image at the moment, and the like until the first image is not matched with the first identification, the vision test result is obtained

In a feasible embodiment, if the vision row in which the first identifier is located includes a plurality of identifiers, the controller may select a plurality of first identifiers (each display interface only displays one first identifier) in the vision row, and only when the first images acquired for multiple times are all matched with the corresponding first identifiers, the controller selects any one identifier in a next row of the currently displayed identifier as the first identifier. For example, the display interface shown by the display is the interface 21 in fig. 8B (in this embodiment, the controller is configured to select two identifiers in each vision row as the first identifier), the controller first selects the identifier 1 as the first identifier, the vision row B where the first identifier is located is the vision row, and the controller recognizes that the direction indicated by the user in the first image matches the first identifier. The controller continues to select any one of the identifiers (identifier 2) in the vision row B as the first identifier, and at this time, the display interface of the display may refer to the interface 22 in fig. 8B, and if the controller recognizes that the user-indicated direction in the first image matches the first identifier, the controller determines any one of the identifiers in the next row of the vision row B as the first identifier.

In a feasible embodiment, if the vision row in which the first identifier is located includes a plurality of identifiers, the controller may select a plurality of first identifiers in the vision row respectively (each display interface only displays one first identifier), and the controller generates the example test result only if the first images acquired for multiple times are not matched with the corresponding first identifiers. For example, the display interface shown by the display is the interface 21 in fig. 8B (in this embodiment, the controller is configured to select two identifiers in each vision row as the first identifier), the controller selects the identifier 1 as the first identifier for the first time, the vision row B where the first identifier is located is the vision row, and the controller recognizes that the direction indicated by the user in the first image is not matched with the first identifier. The controller continues to select any one of the identifiers (identifier 2) in the vision row B as the first identifier, at this time, the display interface of the display may refer to the interface 22 shown in fig. 8B, and if the controller identifies that the direction indicated by the user in the first image is not matched with the first identifier, the controller determines that the vision grade corresponding to the vision row B is the vision grade of the user.

In some embodiments, the controller may control the speaker to play the vision test result, and in other embodiments, the controller may control the display to show the vision test result.

The following describes in detail the operation flow of the displayed device according to the embodiment of the present application with reference to specific examples. In a possible embodiment the user enters the wake-up word "Peclet classmate" and the control instruction "initiate the vision test function". When the controller receives a starting instruction input by a user, the visual acuity chart is called and the identifier with the largest volume is selected from the visual acuity chart to serve as the first identifier, then the controller controls the display to display the visual acuity chart, and at the moment, the display interface of the display can refer to the interface 11 in fig. 8A. When the user sees the interface 11, a "right" gesture is made to the first identifier presented by the interface 11. In the embodiment of the application, the controller acquires the first image after controlling the display to display the visual chart for 0.5s, and the user makes a gesture of 'right' in the first image (the first image is matched with the first identifier). When the controller determines that the first image matches the first identifier, the controller selects any identifier in the line of sight B as the first identifier, and the display interface of the display may refer to the interface 12 in fig. 8A. When the user sees the interface 12, a "left" gesture is made to the first indicia presented by the interface 12. After the controller selects the first identifier in the vision line B for 0.5s, the controller controls the camera to acquire the first image again, and at the moment, a 'leftward' gesture is made in the first image (the first image is matched with the first identifier). When the controller determines that the first image matches the first identifier, the controller selects any identifier in the line of sight C as the first identifier, and the display interface of the display may refer to the interface 13 in fig. 8A. When the user sees interface 13, a "left" gesture is made to the first indicia presented by interface 12. And after the controller selects the first mark 0.5s from the vision line C, the camera of the controller acquires a first image, and the gesture of the user in the first image is leftward at the moment. The controller determines that the first image is not matched with the first identifier at the moment, generates a vision test result that your vision grade is 3, and controls the display to display the vision test result.

In some possible embodiments, the controller is further configured to perform the steps of:

step (11) in response to receiving a user instruction, reading the vision grade of a user carried by the user instruction;

the user instruction may be an instruction issued by the user according to the condition of self vision, and in some feasible embodiments, the user instruction may be a user instruction transmitted by the user in a voice form, for example, the user instruction may be "my vision level is XXX". In some feasible embodiments, the user instruction may be a user instruction sent by a user through a remote controller; the sending process of the user instruction may be that the user touches a related control of the remote controller, so that the controller may send a corresponding user instruction, and further the controller may make a corresponding response to the user instruction. For example, the user may trigger the remote controller to send a user instruction carrying "my eyesight level is XXX" to the controller by touching the control B of the remote controller.

Step (12) screening out a target vision row from the first visual chart, wherein the target vision row is the vision row corresponding to the vision grade of the user; selecting any one mark from the target vision row as a first mark;

in the visual chart shown in the application, the marks with the same volume are positioned in the same row to form a visual line; from top to bottom in the vertical direction, the volume of the marks displayed in each row is gradually reduced; each vision row corresponds to a vision level. And when the controller reads the vision grade of the user carried by the user instruction, selecting a vision row matched with the vision grade of the user in the vision chart as a target vision row. Selecting any one mark from the target vision row as a first mark; fig. 9A and 9B are schematic diagrams illustrating a display interface according to a possible embodiment, wherein the display interface is used for displaying a target visual line, and reference 1 in the figures is a first reference.

Step (13), if the first image is matched with the first identifier, selecting any identifier in the next row of the currently displayed identifier as the first identifier until the first image is not matched with the first identifier;

when the display displays the target vision line, the user makes corresponding action on the content displayed by the target vision line. The controller sends a collection instruction to the camera so that the camera collects the corresponding first image at the moment. The controller identifies the user indication direction in the first image, then calculates the matching degree of the user indication direction and the direction of the first identifier, selects any identifier in the next row of the currently displayed identifier as the first identifier if the first image is matched with the first identifier, and repeats until the first image is not matched with the first identifier.

And (14) if the first image is not matched with the first identifier, selecting any identifier in the last line of the currently displayed identifier as the first identifier until the first image is matched with the first identifier.

When the display displays the target vision line for the first time, the user makes corresponding action on the content displayed by the target vision line. The controller sends a collection instruction to the camera so that the camera collects the corresponding first image at the moment. The controller identifies the user indication direction in the first image, then calculates the matching degree of the user indication direction and the direction of the first identifier, if the first image is not matched with the first identifier, selects any identifier in the last row of the currently displayed identifier as the first identifier, and so on until the first image is matched with the first identifier.

The following describes in detail the operation flow of the displayed device according to the embodiment of the present application with reference to specific examples.

In a possible embodiment the user instruction is "my vision level is 4". The controller receives a user instruction input by a user, reads that the user vision level carried by the user instruction is "my vision level is 4", and determines that the vision row D is the target vision row, and at this time, the display interface of the display may refer to the interface 31 in fig. 9A. When the user sees the interface 31, an "up" gesture is made to the first indicia presented by the interface 31. In the embodiment of the application, the controller acquires the first image 0.5s after the display is controlled to display the visual chart, and the direction information displayed in the first image is 'upward' (the first image is matched with the first mark). When the controller determines that the first image matches the first identifier, the controller selects any identifier in the line of sight E as the first identifier, and the display interface of the display may refer to the interface 32 in fig. 9A. When the user sees the interface 32, a "left" gesture is made to the first indicia presented by the interface 32. After the controller selects the first mark in the vision line E for 0.5s, the controller controls the camera to acquire the first image again, and a left gesture is made in the first image. And if the first image is not matched with the first identifier, the controller generates a vision test result, namely that your vision grade is 4, and controls the display to display the vision test result.

In a possible embodiment the user instruction is "my vision level is 4". The controller receives a user instruction input by a user, reads that the user vision level carried by the user instruction is "my vision level is 4", and determines that the vision row D is the target vision row, and at this time, the display interface of the display may refer to the interface 41 in fig. 9B. When the user sees the interface 41, a "down" gesture is made to the first indicia presented by the interface 41. In the embodiment of the application, the controller acquires the first image 0.5s after the display is controlled to display the visual chart, and the direction information displayed in the first image is downward (the first image is not matched with the first mark). When the controller determines that the first image does not match the first identifier, the controller selects any identifier in the line of sight C as the first identifier, and the display interface of the display may refer to the interface 42 in fig. 9B. When the user sees the interface 42, a "right" gesture is made to the first indicia presented by the interface 42. After the controller selects the first identifier for 0.5s in the vision row E, the controller controls the camera to acquire the first image again, and the user makes a gesture of 'right' in the first image (the first image is matched with the first identifier). And matching the first image with the first identifier, generating a vision test result by the controller, wherein the vision grade of your is 3, and controlling the loudspeaker to broadcast the vision test result.

The visual acuity test chart mentioned in the above embodiment is an international standard visual acuity test chart, which is composed of characters "E" with different sizes and different opening directions; measuring from 0.1 to 1.5 (or from 4.0 to 5.2); each row has a label (vision grade), and the test is started when the tested person is 5 meters away from the visual chart. In some application scenarios, the test distance cannot meet the specification of 5 meters due to the limitation of the display installation space, and thus the vision test result is inaccurate. In order to solve the above technical problem, in an embodiment of the present application, on the basis of the display device shown in the above embodiment, the controller is further configured to perform the following steps:

in the technical scheme shown in the embodiment of the application, the corresponding relation between the visual acuity chart and a first distance is stored in table 1 in advance, wherein the first distance is the distance between the human eyes and the center of the display. The specific corresponding relationship is as follows: and taking the standard visual acuity chart as a reference 1, and determining a scaling value of the standard visual acuity chart according to the proportional relation of the first distance and 5 meters. Fig. 10 is a schematic diagram of a display interface according to a possible embodiment, where the display interface is used to display an eye chart corresponding to different first distances, where the first distance corresponding to the distance 1 is 5 meters, the first distance corresponding to the distance 2 is 4 meters, and the first distance corresponding to the distance 3 is 3 meters.

TABLE 1

Serial number	First distance	Visual chart scaling factor	Remarks for note
				1	5	1	-
2	4	4/5	-
				3	3	3/5	-
……	……	……	-
				N	N	N/5	-

Step (21) is for acquiring a second image in response to receiving a start instruction, the second image being an image acquired before the display shows the first identifier;

the embodiment of the application shows display equipment, and the controller controls the camera to acquire the second image when receiving the starting instruction.

In one implementation, in response to receiving the activation instruction, the controller is further configured to control the display to display a prompt interface (and a guide interface) for instructing the user to enter the predetermined area. A specific prompt interface can be seen in fig. 11. Specifically, fig. 11 is a schematic diagram of a prompt interface according to some embodiments, where a user adjusts a position of the user according to the prompt interface. When the user finishes entering the preset area, the controller controls the display to display the visual chart. The reason is that the acquisition area of the camera is marginal, in order to better acquire local data, the camera acquires a current image (a second image), a floating layer is newly built above a layer displaying the current image in the display process, the optimal acquisition area is determined in the floating layer according to the position and the angle of the camera, and an optimal position frame is displayed in the floating layer according to the optimal acquisition area. The user is guided to move the position, the position in the acquired current image is enabled to coincide with the frame of the optimal position in the floating layer, when the overlapping degree reaches a preset threshold value, the display equipment displays a successful prompt message, cancels the floating layer and jumps to any display interface in the images 7A-7D.

Step (22) calculating a first distance from the second captured image, the first distance being a distance between the human eye and the center of the display;

in a possible embodiment, the calculation of the first distance may be: the controller is further configured to: calculating a first distance from the second image and a pre-stored standard image, please refer to fig. 12, where fig. 12 is a simulation during the testing process according to a feasible embodiment, and the distance between the near vision considered AB in the embodiment shown in fig. 12 is the first distance cd:

wherein cd is a first distance, h is the vertical direction from the human eyes to the camera, and d₁Is the second distance.

(1) The calculation process of the second distance:

it is known that the size of the picture captured by the camera is determined by the length of the object (user) and the distance (second distance) between the object and the camera. The following relationships are generally satisfied: distance (d) is focal length (fl) subject length (B)/image size (a);

distance (d) between object and camera₁) Focal length (fl) subject length (B)₁) Image size of object to be photographed (A)₁)；

Distance (d) between standard and camera₂) Focal length (fl) standard object length (B)₂) Standard image size (A)₂)；

It is known from a large amount of statistical data that the width of the head (or the canthus) of a person, regardless of race, height, should be the least different part. The technical scheme shown in the embodiment of the application adopts the human eye space or the head space as the size for replacing the measured object or the standard object, so that the relation can be approximated as B₁＝B₂And then d is obtained₁＝d₂*A₁/A₂Wherein d is₁Is the distance between the object and the camera, A₁The size of the image of the object, d₂Is the distance between the standard and the camera, A₂Standard image size. In the scheme shown in the embodiment of the application, the image size A of the standard object₂And the distance d between the standard object and the camera₂And storing in advance.

There are several ways to calculate the size of the image of the object:

for example, the human eye distance is used as the measured object length. Size of object image A₁The following method can be used. The controller reads the coordinate value corresponding to the human eye in the second image in the display; and calculating a first eye distance according to the coordinate values, wherein the first eye distance is the distance between two eyes in the second image. Or reading the pixel value of the interval between the two eyes in the second image and determining the size A of the image of the shot object according to the pixel value₁。

For example, the head width is used as the length of the object to be measured, specifically, the image size A of the object to be measured₁The following method can be used. The controller reads the coordinate values of the two ends of the head part in the second image corresponding to the display; and calculating a first width value according to the coordinate values, wherein the first width value is the distance between two sides of the head of the person in the second image. Or reading pixel values of intervals at two sides of the head in the second image, and determining the size A of the image of the object to be shot according to the pixel values₁

Following is a specific embodiment of the method for measuring the distance d between the object and the camera₁The calculation process of (2) is explained in detail:

in a possible embodiment, the controller controls the display to display the second image, and the display interface of the display may construct a rectangular coordinate system with the lower left corner of the display as the origin, referring to fig. 13. In the coordinate system, the coordinate values of the left eye angle of the set object are (X1, Y1), the coordinate values of the right eye angle of the set object are (X2, Y2), and the heights of the two eyes of the person are generally consistent, that is, Y1 is equal to Y2, and the corresponding a is₁X1-X2. The controller gives a standard image with an eye distance A2 in advance, and when the standard image is shot, the distance d between the human eyes and the camera₂From the above data, d can be calculated₁＝d₂*(X1-X2)/A₂。

In a possible embodiment, the controller controls the display to display the second image, and the display interface of the display can refer to fig. 14, and the controller reads the pixel value between the two eyes in the second image, and determines a according to the pixel value₁. The controller gives an eye distance A of the standard image in advance₂When shooting a standard image, the distance d from the human eyes to the camera₂From the above data, d can be calculated₁＝d₂*A₁/A₂。

(2) Calculating the vertical h from the human eyes to the camera;

according to the method and the device, the distance h from the human eyes to the center of the camera can be calculated through the width of the human eyes and the imaging size of the human eye image by acquiring the position coordinates of the human eyes in the imaging image.

Eye-to-camera vertical h-eye angular width a₁Imaging focal length H of camera/width A of human canthus in second image₁；

The method for calculating the imaging focal length H of the camera comprises the following steps: knowing the real object size realobject size, distance from the camera, and pixel size object sizePixel of the real object in the screen image, the imaging focal length H is distance object sizePixel/realObjectSize.

a₁Test ofThe test method can be a conventional test method in the art, and is not described herein.

Width A of human canthus in second image₁The above coordinate method may be used, the pixel method may be used, or a testing method commonly used in the art may be used, which is not described herein.

To improve the accuracy of the test results, the controller may be further configured to:

calculating the distance d from the human eyes to the camera according to the second image and a pre-stored standard image₁；

Calculating the first distance according to the following formula:

specifically, referring to fig. 15, fig. 15 is a simulation diagram in a test process according to a feasible embodiment, where cd is a first distance, h is a distance from a camera to a center of a display, l is a distance from the camera to the center of the display, and d is₁A second distance (the distance of the human eye to the camera).

Wherein d is₁The calculation process can be referred to, and the above embodiment is not described herein again.

The calculation process of h can be referred to, and the above embodiments are not described herein.

l is the distance between the camera and the center of the display, and the data is pre-stored in a memory and can be called according to requirements in the application process.

Step (23) adjusting a prestored visual chart according to the first distance to obtain a first visual chart;

step (24) controls the display to display the first eye chart, the first eye chart comprising at least a first identifier.

In the practical application process, the user may interact with the display device through voice, and in a feasible embodiment, the display device may include: referring to fig. 16, an interaction process of the controller and the display may be described, and fig. 16 is a flowchart illustrating interaction of components of the display device according to a possible embodiment.

Wherein, the controller is configured to execute the following step 201, in response to receiving a user instruction, controlling the display to display an eye chart, wherein the eye chart at least comprises a first identifier, and the first identifier is an identifier which needs to be identified by a user;

s202, receiving a recognition voice input by a user, wherein the recognition voice is the user voice shown by the user according to a first identifier;

the controller of the display device has a radio function, and the corresponding controller can receive user output voice, wherein the voice can be a control instruction, such as 'control the display device to start up'; the voice may also be a play instruction, such as "play a song of Zhou Jieren". In an application scenario of the example test, the speech may be a recognition speech, and the recognition speech is a user speech shown by the user according to the first identifier. For example, when the user sees the first indication "E" presented on the display, the corresponding user shows the recognized speech as "right, or to the right".

S203, generating a vision test result according to the first identification and the matching result of the recognized voice.

The display device shown in this embodiment may include: the visual testing system comprises a display and a controller, wherein when a starting instruction for visual testing is received, the controller controls the display to display a visual chart, the visual chart at least comprises a first identifier, and the first identifier is an identifier which needs to be identified by a user; when the first identification is displayed on the display, the controller receives the recognition voice through the user interface, and the vision test result is generated according to the matching result of the first identification and the recognition voice. The display device shown in the embodiment of the application can help a user to perform vision test, and the user experience is good.

Generally, in order to reduce the data processing amount of one controller, two controllers may be provided in the display device, and the controller in the technical solution shown in the embodiment of the present application may include a first controller and a second controller. Referring to fig. 17, a structural block diagram of a dual-controller display device may be provided with a display, a first controller, a second controller, a camera and a speaker, where an interaction process of the display, the first controller, the second controller and the camera may refer to fig. 18 to 20.

Fig. 18 is a flowchart illustrating an interaction process of components in a display device according to a possible embodiment.

The first controller is configured to execute step S301, in response to receiving a user instruction, controlling the camera to turn on;

the second controller is configured to execute step S302, in response to receiving a user instruction, to control the display to display an eye chart, where the eye chart includes at least a first identifier, and the first identifier is an identifier that needs to be identified by a user;

the manner of displaying the eye chart can refer to the above embodiments, and is not described herein.

When the display shows the first identifier, the first controller is configured to execute step S303 to control the camera to capture a first image:

the process of acquiring the first image may refer to the above embodiments, and is not described herein again.

Step S304 is to transmit the first image to a second controller;

the transmission method of the first image may be a transmission method commonly used in the art, and will not be described herein.

Step S305 generates a vision test result according to the matching result of the first identifier and the first image.

The specific test matching process may refer to the implementation manner of the above embodiment, and the applicant herein does not need to describe any further.

In some feasible embodiments, the second controller can control the loudspeaker to play the vision test result, and in other feasible embodiments, the second controller can control the display to show the vision test result.

In the embodiment of the present application, the second controller is further configured to perform steps (21) - (24) of the above embodiment to ensure the accuracy of the test result of the display device shown in the present application. The parameters involved in the data processing process may be retrieved or calculated according to the above embodiments, and details thereof are not repeated by the applicant herein.

The display device shown in this embodiment may include: the visual acuity test system comprises a display, a camera, a first controller and a second controller, wherein when a starting instruction for a visual acuity test is received, the first controller controls the camera to be started, meanwhile, the second controller controls the display to display a visual acuity chart, the visual acuity chart at least comprises a first identification, and the first identification is an identification which needs to be identified by a user; when the display shows the first mark, the first controller controls the camera to collect the first image and sends the first image to the second controller. And the second controller generates a vision test result according to the matching result of the first identifier and the first image. The display device shown in the embodiment of the application can help to perform vision test, and the user experience is good.

Fig. 19 is a flowchart illustrating an interaction process of components in a display device according to a possible embodiment.

The first controller is configured to execute step S401, in response to receiving a user instruction, to control the camera to turn on;

the second controller is configured to execute step S402, in response to receiving a user instruction, to control the display to show an eye chart, the eye chart including at least a first identifier;

The second controller is configured to execute step S403 to send the direction information corresponding to the first identifier to the first controller;

the transmission method of the direction information may adopt a transmission method commonly used in the art, and will not be described herein.

When the display shows the first identifier, the first controller is configured to execute step S404 to control the camera to capture a first image;

The first controller is configured to perform step S405 to generate a vision test result according to the direction information and the matching result of the first image.

The display device shown in this embodiment may include: the visual acuity test system comprises a display, a camera, a first controller and a second controller, wherein when a starting instruction for a visual acuity test is received, the first controller controls the camera to be started, meanwhile, the second controller controls the display to display a visual acuity chart, the visual acuity chart at least comprises a first identification, and the first identification is an identification which needs to be identified by a user; the second controller is also used for sending the direction information corresponding to the first identifier to the first controller; when the display shows the first identification, the first controller controls the camera to collect the first image and generates a vision test result according to the matching result of the first identification and the first image. The display device shown in the embodiment of the application can help to perform vision test, and the user experience is good.

Fig. 20 is a flowchart illustrating an interaction process of components in a display device according to a possible embodiment.

The first controller is configured to execute step S501, in response to receiving a user instruction, to control the camera to turn on;

the first controller is configured to execute step S502, in response to receiving a user instruction, send an eye chart to the second controller, where the eye chart includes at least a first identifier, and the first identifier is an identifier that the user needs to identify;

the second controller is configured to perform step 503 to control the display to present the eye chart. When the display shows the first identifier, the first controller is further configured to execute step S504 to control the camera to capture a first image;

the first controller is further configured to execute step S505 to generate a vision test result according to the matching result of the first identifier and the first image;

in the embodiment of the present application, the first controller is further configured to perform steps (21) - (24) of the above embodiment to ensure the accuracy of the test result of the display device shown in the present application. The parameters involved in the data processing process may be retrieved or calculated according to the above embodiments, and details thereof are not repeated by the applicant herein.

The display device shown in this embodiment may include: the visual testing system comprises a display, a camera, a first controller and a second controller, wherein when a starting instruction for visual testing is received, the first controller controls the camera to be started, and meanwhile, a visual chart is sent to the second controller, the visual chart at least comprises a first identifier, the first identifier is an identifier which needs to be identified by a user, and the second controller controls the display to display the visual chart; when the display shows the first identification, the first controller controls the camera to collect the first image and generates a vision test result according to the matching result of the first identification and the first image. The display device shown in the embodiment of the application can help to perform vision test, and the user experience is good.

In a 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 method for customizing a control key and the method for starting the control key 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.

Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.

The foregoing description, for purposes of explanation, has been presented in conjunction with specific embodiments. However, the illustrative discussions above are not intended to be exhaustive or to limit the embodiments to the precise forms disclosed above. Many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles and the practical application, to thereby enable others skilled in the art to best utilize the embodiments and various embodiments with various modifications as are suited to the particular use contemplated.

Claims

1. A display device, comprising:

a display device is arranged on the base plate,

the camera is used for collecting images;

2. The display device of claim 1, wherein the eye chart further comprises a second indicator, wherein the second indicator is presented in a manner different from the manner in which the first indicator is presented.

3. The display device according to claim 1 or 2, wherein in the first eye chart, the same-volume identifiers are located in the same row; from top to bottom in the vertical direction, the volume of the marks displayed in each row is gradually reduced;

the controller is further configured to: selecting the mark with the largest volume as a first mark;

and if the first image is matched with the first identifier, selecting any identifier in the next row of the currently displayed identifier as the first identifier until the first image is not matched with the first identifier.

4. The display device according to claim 1 or 2, wherein in the first eye chart, the same-volume identifiers are located in the same row to form a line of sight; from top to bottom in the vertical direction, the volume of the marks displayed in each row is gradually reduced;

the controller is further configured to: reading the vision grade of the user carried by the user instruction in response to receiving the user instruction, wherein the user instruction is used for sending an instruction to the user according to the vision condition of the user;

screening out a target visual line in the first visual chart, wherein the target visual line is matched with the visual grade of the user;

selecting any one mark from the target vision row as a first mark;

if the first image is matched with the first identifier, selecting any identifier in the next row of the currently displayed identifier as the first identifier until the first image is not matched with the first identifier;

and if the first image is not matched with the first identifier, selecting any identifier in the last line of the currently displayed identifier as the first identifier until the first image is matched with the first identifier.

5. The display device of claim 1, wherein in response to receiving a start instruction, the controller is further configured to:

acquiring a second image, wherein the second image is acquired before the first identifier is displayed on a display;

calculating a first distance according to the second collected image, wherein the first distance is the distance between the human eyes and the center of the display;

adjusting a pre-stored visual chart according to the first distance to obtain a first visual chart;

controlling the display to display the first eye chart, wherein the first eye chart at least comprises a first mark.

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

calculating a second distance according to the second image and a pre-stored standard image, wherein the second distance is the distance from the human eyes to the camera;

calculating the first distance according to the following formula:

wherein, cd is a first distance, h is a vertical distance from the human eyes to the camera, and d₁Is the second distance.

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

calculating the distance from the human eyes to the camera according to the second image and a pre-stored standard image;

calculating the first distance according to the following formula:

wherein cd is a first distance, h is a vertical distance from human eyes to the camera, l is a distance from the camera to the center of the display, and d₁Is the second distance.

8. The display device according to claim 6 or 7, wherein the controller is further configured to:

reading coordinate values of the two eyes in the second image corresponding to the display;

calculating a first eye distance according to the coordinate values, wherein the first eye distance is the distance between the eyes of the person in the second image;

a second eye distance and a third distance are taken, wherein the second eye distance is the distance between two eyes of a person in the standard image, and the third distance is the distance from the eyes of the person to the camera when the standard image is shot;

the second distance is calculated according to the following formula:

d₁＝d₂*A₁/A₂wherein d is₁Is a second distance, said A₁At a first eye distance, said A₂Is the second inter-ocular distance, d₂Is the third distance.

9. The display device according to claim 6 or 7, wherein the controller is further configured to:

reading pixel values between two eyes in the second image;

calculating a first eye distance according to the pixel values, wherein the first eye distance is the distance between the eyes of the person in the second image;

the second distance is calculated according to the following formula:

10. A display device, comprising:

a display;

11. A display device, comprising:

a display;

the camera is used for collecting images;

12. A display device, comprising:

a display;

the camera is used for collecting images;

13. A display device, comprising:

a display;

a camera;

and the second controller controls the display to display the visual chart.