WO2022188472A1 - 一种图像显示亮度和色差的调整方法及显示设备 - Google Patents

一种图像显示亮度和色差的调整方法及显示设备 Download PDF

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Publication number
WO2022188472A1
WO2022188472A1 PCT/CN2021/134351 CN2021134351W WO2022188472A1 WO 2022188472 A1 WO2022188472 A1 WO 2022188472A1 CN 2021134351 W CN2021134351 W CN 2021134351W WO 2022188472 A1 WO2022188472 A1 WO 2022188472A1
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Prior art keywords
light intensity
brightness
display device
display
value
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PCT/CN2021/134351
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English (en)
French (fr)
Inventor
王兴
Original Assignee
海信视像科技股份有限公司
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Priority claimed from CN202110258419.7A external-priority patent/CN113038215A/zh
Priority claimed from CN202110275517.1A external-priority patent/CN113015017B/zh
Application filed by 海信视像科技股份有限公司 filed Critical 海信视像科技股份有限公司
Publication of WO2022188472A1 publication Critical patent/WO2022188472A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/41—Structure of client; Structure of client peripherals
    • H04N21/422—Input-only peripherals, i.e. input devices connected to specially adapted client devices, e.g. global positioning system [GPS]

Definitions

  • the present application relates to the field of display technology, and in particular, to a method and a display device for adjusting the brightness and color difference of image display.
  • Embodiments of the present application provide a method and a display device for adjusting image display brightness and color difference
  • a display device including:
  • the adaptive image is set to the ON state and is connected to the network, obtain the weather conditions of the current city in real time by means of the network, and obtain the light intensity of the current environment;
  • the brightness value and the color difference value of the image display are adjusted according to the weather condition and the light intensity.
  • FIG. 1 exemplarily shows a usage scenario of a display device according to some embodiments
  • FIG. 2 exemplarily shows a block diagram of the hardware configuration of the control apparatus 100 according to some embodiments
  • FIG. 3 exemplarily shows a block diagram of the hardware configuration of the display device 200 according to some embodiments
  • FIG. 4 exemplarily shows a software configuration diagram in the display device 200 according to some embodiments
  • FIG. 5 exemplarily shows a schematic structural diagram of a display according to some embodiments
  • 6-10 exemplarily show a schematic diagram of a user interface according to some embodiments.
  • FIG. 11 exemplarily shows a flowchart of a method for adjusting image display brightness and color temperature according to some embodiments
  • FIG. 12 exemplarily shows a schematic structural diagram of a display according to some embodiments.
  • FIG. 13 exemplarily shows a schematic diagram of light intensity perception according to some embodiments
  • FIG. 14 exemplarily shows a flow chart of an image quality compensation method according to some embodiments.
  • module refers to any known or later developed hardware, software, firmware, artificial intelligence, fuzzy logic, or combination of hardware or/and software code capable of performing the functions associated with that element.
  • FIG. 1 is a schematic diagram of a usage scenario of a display device according to an embodiment. As shown in FIG. 1 , the display device 200 also performs data communication with the server 400 , and the user can operate the display device 200 through the smart device 300 or the control device 100 .
  • control device 100 may be a remote control, and the communication between the remote control and the display device includes at least one of infrared protocol communication or Bluetooth protocol communication, and other short-range communication methods, and the display is controlled wirelessly or wiredly. device 200.
  • the user can control the display device 200 by inputting user instructions through at least one of keys on the remote control, voice input, and control panel input.
  • the smart device 300 may include any one of a mobile terminal, a tablet computer, a computer, a laptop computer, an AR/VR device, and the like.
  • the display device may not use the above-mentioned smart device or control device to receive instructions, but receive user control through touch or gesture.
  • the smart device 300 may also be used to control the display device 200 .
  • the display device 200 is controlled using an application running on the smart device.
  • the smart device 300 and the display device may also be used to communicate data.
  • the display device 200 can also be controlled in a manner other than the control apparatus 100 and the smart device 300.
  • the module for acquiring voice commands configured inside the display device 200 can directly receive the user's voice command for control.
  • the user's voice command control can also be received through the voice control device provided outside the display device 200 .
  • the display device 200 is also in data communication with the server 400 .
  • the display device 200 may be allowed to communicate via local area network (LAN), wireless local area network (WLAN), and other networks.
  • the server 400 may provide various contents and interactions to the display device 200 .
  • the server 400 may be a cluster or multiple clusters, and may include one or more types of servers.
  • the software steps executed by one step execution body can be migrated to another step execution body that is in data communication with it for execution as required.
  • the software steps executed by the server may be migrated to be executed on the display device with which it is in data communication as required, and vice versa.
  • FIG. 2 exemplarily shows a configuration block diagram of the control apparatus 100 according to an exemplary embodiment.
  • the control device 100 includes a controller 110 , a communication interface 130 , a user input/output interface 140 , a memory, and a power supply.
  • the control device 100 can receive the user's input operation instruction, and convert the operation instruction into an instruction that the display device 200 can recognize and respond to, and play an intermediary role between the user and the display device 200 .
  • the communication interface 130 is used for external communication, including at least one of a WIFI chip, a Bluetooth module, NFC or an alternative module.
  • the user input/output interface 140 includes at least one of a microphone, a touchpad, a sensor, a button, or an alternative module.
  • FIG. 3 is a block diagram showing a hardware configuration of the display apparatus 200 according to an exemplary embodiment.
  • display device 200 includes tuner 210, communicator 220, detector 230, external device interface 240, controller 250, display 260, audio output interface 270, memory, power supply, user interface at least one.
  • the controller includes a central processing unit, a video processing unit, an audio processing unit, a graphics processing unit, a RAM, a ROM, and a first interface to an nth interface for input/output.
  • the display 260 includes a display screen component for presenting a picture, and a driving component for driving the image display, for receiving the image signal output from the controller, for displaying the video content, the image content and the menu manipulation interface Components and user-manipulated UI interfaces, etc.
  • the display 260 may be at least one of a liquid crystal display, an OLED display, and a projection display, and may also be a projection device and a projection screen.
  • the tuner demodulator 210 receives broadcast television signals through wired or wireless reception, and demodulates audio and video signals, such as EPG data signals, from a plurality of wireless or cable broadcast television signals.
  • communicator 220 is a component for communicating with external devices or servers according to various communication protocol types.
  • the communicator may include at least one of a Wifi module, a Bluetooth module, a wired Ethernet module and other network communication protocol chips or near field communication protocol chips, and an infrared receiver.
  • the display device 200 may establish transmission and reception of control signals and data signals with the control apparatus 100 or the server 400 through the communicator 220 .
  • the detector 230 is used to collect signals from the external environment or interaction with the outside.
  • the detector 230 includes a light receiver, a sensor for collecting ambient light intensity; alternatively, the detector 230 includes an image collector, such as a camera, which can be used to collect external environmental scenes, user attributes or user interaction gestures, or , the detector 230 includes a sound collector, such as a microphone, for receiving external sound.
  • the external device interface 240 may include, but is not limited to, the following: High Definition Multimedia Interface (HDMI), Analog or Data High Definition Component Input Interface (Component), Composite Video Input Interface (CVBS), USB Input Interface (USB), Any one or more interfaces such as RGB ports. It may also be a composite input/output interface formed by a plurality of the above-mentioned interfaces.
  • HDMI High Definition Multimedia Interface
  • Component Analog or Data High Definition Component Input Interface
  • CVBS Composite Video Input Interface
  • USB Input Interface USB
  • Any one or more interfaces such as RGB ports. It may also be a composite input/output interface formed by a plurality of the above-mentioned interfaces.
  • the controller 250 and the tuner 210 may be located in different separate devices, that is, the tuner 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 Wait.
  • the controller 250 controls the operation of the display device and responds to user operations.
  • the controller 250 controls the overall operation of the display apparatus 200 .
  • the controller 250 may perform an operation related to the object selected by the user command.
  • the object may be any of the selectable objects, such as hyperlinks, icons, or other operable controls.
  • the operations related to the selected object include: displaying operations connected to hyperlinked pages, documents, images, etc., or executing operations of programs corresponding to the icons.
  • the controller includes a central processing unit (Central Processing Unit, CPU), a video processor, an audio processor, a graphics processor (Graphics Processing Unit, GPU), RAM (Random Access Memory, RAM), ROM (Read- Only Memory, ROM), at least one of the first interface to the nth interface for input/output, a communication bus (Bus), and the like.
  • CPU Central Processing Unit
  • video processor video processor
  • audio processor audio processor
  • graphics processor Graphics Processing Unit, GPU
  • RAM Random Access Memory
  • ROM Read- Only Memory
  • CPU processor It is used to execute the operating system and application program instructions stored in the memory, and to execute various application programs, data and contents according to various interactive instructions received from external input, so as to finally display and play various audio and video contents.
  • CPU processor which can include multiple processors. For example, it includes a main processor and one or more sub-processors.
  • the graphics processor is used to generate various graphic objects, such as at least one of icons, operation menus, and user input instructions to display graphics.
  • the graphics processor includes an operator, which performs operations by receiving various interactive instructions input by the user, and displays various objects according to the display attributes; it also includes a renderer, which renders various objects obtained based on the operator, and the rendered objects are used for rendering. displayed on the display.
  • the video processor is used to decompress, decode, scale, reduce noise, convert frame rate, convert resolution, and synthesize images according to the standard codec protocol of the received external video signal. At least one of the processes can obtain a signal that is directly displayed or played on the displayable device 200 .
  • the video processor includes at least one of 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.
  • the video decoding module is used to process the demultiplexed video signal, including decoding and scaling.
  • the image synthesizing module such as an image synthesizer, is used for superimposing and mixing the GUI signal generated by the graphics generator according to the user's input or itself, and the zoomed video image, so as to generate an image signal that can be displayed.
  • the frame rate conversion module is used to convert the input video frame rate.
  • the display formatting module is used to convert the received frame rate into the video output signal, and change the signal to conform to the display format signal, such as outputting the RGB data signal.
  • the audio processor is configured to receive an external audio signal, perform decompression and decoding according to a standard codec protocol of the input signal, and perform at least one of noise reduction, digital-to-analog conversion, and amplification processing. , to get a sound signal that can be played in the loudspeaker.
  • the user may input user commands on a graphical user interface (GUI) displayed on the display 260, and the user input interface receives the user input commands through the graphical user interface (GUI).
  • GUI graphical user interface
  • the user may input a user command by inputting a specific sound or gesture, and the user input interface recognizes the sound or gesture through a sensor to receive the user input command.
  • a "user interface” is a medium interface for interaction and information exchange between an application program or an operating system and a user, which enables conversion between an internal form of information and a form acceptable to the user.
  • the user interface 280 is an interface that can be used to receive control input (eg, physical buttons on the display device body, or others).
  • control input eg, physical buttons on the display device body, or others.
  • the display device 200 further includes a light sensor 290, the light sensor 290 is connected to the controller 250, and the light sensor 290 can be disposed on the top of the display 260, as shown in FIG. 5 .
  • the light sensor 290 disposed on the top of the display 260 is generally not easy to be blocked, and can be better sensitive.
  • the system of the display device may include a kernel (Kernel), a command parser (shell), a file system and an application program.
  • kernel Kernel
  • shell command parser
  • file system an application program.
  • the kernel, shell, and file system make up the basic operating system structures that allow users to manage files, run programs, and use the system.
  • the kernel starts, activates the kernel space, abstracts hardware, initializes hardware parameters, etc., runs and maintains virtual memory, scheduler, signals and inter-process communication (IPC).
  • IPC inter-process communication
  • the shell and user applications are loaded.
  • An application is compiled into machine code after startup, forming a process.
  • the system is divided into four layers, from top to bottom, they are an application layer (referred to as “application layer”), an application framework layer (referred to as “framework layer”) ”), the Android runtime and the system library layer (referred to as the “system runtime layer”), and the kernel layer.
  • application layer an application layer
  • frame layer an application framework layer
  • Android runtime the Android runtime
  • system library layer the system library layer
  • kernel layer the kernel layer
  • At least one application program runs in the application program layer, and these application programs may be a Window program, a system setting program, or a clock program that comes with the operating system; they may also be developed by third-party developers. s application.
  • the application package in the application layer is not limited to the above examples.
  • the framework layer provides an application programming interface (API) and a programming framework for applications in the application layer.
  • the application framework layer includes some predefined functions.
  • the application framework layer is equivalent to a processing center, which decides to let the applications in the application layer take action.
  • the application program can access the resources in the system and obtain the services of the system during execution through the API interface.
  • the application framework layer in the embodiment of the present application includes managers (Managers), content providers (Content Provider), etc., wherein the manager includes at least one of the following modules: an activity manager (Activity Manager) uses Interacts with all activities running in the system; Location Manager is used to provide system services or applications with access to system location services; Package Manager is used to retrieve files currently installed on the device Various information related to the application package; Notification Manager (Notification Manager) is used to control the display and clearing of notification messages; Window Manager (Window Manager) is used to manage icons, windows, toolbars, wallpapers on the user interface and desktop widgets.
  • an activity manager uses Interacts with all activities running in the system
  • Location Manager is used to provide system services or applications with access to system location services
  • Package Manager is used to retrieve files currently installed on the device Various information related to the application package
  • Notification Manager Notification Manager
  • Window Manager Window Manager
  • the activity manager is used to manage the life cycle of the various applications and general navigation rollback functions, such as controlling the exit, opening, rollback, etc. of the application.
  • the window manager is used to manage all window programs, such as obtaining the size of the display screen, judging whether there is a status bar, locking the screen, taking screenshots, and controlling the change of the display window (such as reducing the display window, shaking display, distorting display, etc.), etc.
  • the system runtime layer provides support for the upper layer, that is, the framework layer.
  • the Android operating system will run the C/C++ library included in the system runtime layer to implement the functions to be implemented by the framework layer.
  • the kernel layer is the layer between hardware and software. As shown in Figure 4, the kernel layer at least includes at least one of the following drivers: audio driver, display driver, Bluetooth driver, camera driver, WIFI driver, USB driver, HDMI driver, sensor driver (such as fingerprint sensor, temperature sensor, pressure sensors, etc.), and power drives, etc.
  • the kernel layer at least includes at least one of the following drivers: audio driver, display driver, Bluetooth driver, camera driver, WIFI driver, USB driver, HDMI driver, sensor driver (such as fingerprint sensor, temperature sensor, pressure sensors, etc.), and power drives, etc.
  • FIGS. 6-10 exemplarily show schematic diagrams of a user interface provided by the display device 200 .
  • the display device may provide a GUI to the display, and the GUI may provide a presentation area of different image contents, in which a plurality of different controls are arranged.
  • the display area 51 includes controls 511-519, and the controls 511-519 are color, hue, definition, TV aspect ratio, adaptive image setting, advanced setting, calibration setting, low blue light and application image setting, respectively.
  • the GUI also includes a selector 52 indicating that any control is selected, and the position of the selector in the GUI or the position of each control in the GUI can be moved by the input of the user operating the control device to change the selection of a different control.
  • selector 52 indicates that control 515 is selected.
  • controls refer to the visual objects displayed in each display area of the GUI in the display device 200 to represent corresponding content such as icons, thumbnails, video clips, links, etc. These controls can provide users with information received through data broadcasting. Various traditional program content, as well as various application and service content set by content manufacturers.
  • the controls may represent image content or video clips of movies, TV series, audio content of music, applications, or other user access content history information.
  • the control when the control is a movie or TV series, the control can be displayed as a movie or TV poster, a video clip animation of a movie or TV series trailer. If the control is music, the poster of the music album can be displayed.
  • the control when the control is an application, it can be displayed as an icon of the application, or a screenshot of the content of the application can be captured when the application is executed recently. If the control is the user access history, it can be displayed as a screenshot of the content during the most recent execution.
  • control may represent an interface or a set of interfaces that the display device 200 is connected to an external device, or may represent the name of an external device connected to the display device, or the like.
  • signal source input interface collection or HDMI interface, USB interface, PC terminal interface, etc.
  • the display forms of controls are usually diversified.
  • the controls may include textual content and/or images for displaying thumbnails related to the textual content, or video clips related to the text.
  • the control may be the text and/or icon of the application.
  • the selector is used to indicate that one of the controls has been selected, such as the focus object.
  • the control can be selected or controlled according to the user's input through the control apparatus 100 to control the movement of the display focus object in the display device 200 .
  • the user can select and control the controls by controlling the movement of the focus object between the controls through the direction keys on the control device 100 .
  • the movement of each control displayed in the display device 200 can be controlled to cause the focus object to select or control the control.
  • the user can control all the controls to move left and right together through the direction keys on the control device 100, so that the focus object can be selected and the controls can be controlled while keeping the position of the focus object unchanged.
  • the identification forms of selectors are usually diverse.
  • the position of the focus object can be realized or identified by enlarging the control
  • the position of the focus object can be realized or identified by setting the background color of the control, or the border line, size, color, transparency and outline of the text or image of the focused control can be changed. and/or font, etc. to identify the location of the focused object.
  • the adaptive image setting is off, and the selector 52 indicates that the adaptive image setting is selected.
  • the adaptive image setting can be changed from an off state to an on state.
  • the adaptive image setting can be changed from an on state to an off state, as shown in FIG. 6 .
  • the switching of the on state and the off state of the adaptive image setting only occurs within a predetermined time, eg, the state of the adaptive image setting can be changed during the time period of 8:00-18:00 of the day. However, from 18:00 on the same day to 8:00 on the next day, the adaptive image setting is set to off by default, and the adaptive image setting is automatically grayed out, as shown in Figure 8, the user cannot change the state of the adaptive image setting.
  • selector 52 indicates that an adaptive image setting is selected.
  • the user interface further includes controls 5151-5153, which are the adaptive image setting state, automatic opening and time setting, respectively.
  • controls 5151-5153 which are the adaptive image setting state, automatic opening and time setting, respectively.
  • the selector 52 indicates that the adaptive image setting state is selected, the user can change the state of the adaptive image setting by pressing the enter key of the control device.
  • the selector 52 indicates that the automatic opening is selected, the user can set whether the automatic opening is on or off by pressing the confirmation key of the control device.
  • the adaptive image setting is automatically set to off, and after 8:00 the next day, the adaptive image setting is still off , unless the user manually changes the Fit Image setting to On after 8:00.
  • the adaptive image setting is automatically changed to on, without the need for the user to manually change it. Since the sun rises and sets at different times depending on the user's geographic location, the user can set the change time to adapt to the image settings based on the sun rise and set at the location.
  • the selector 52 indicates that the time setting is selected, the user can modify the time when the adaptive image setting can be changed by pressing the numeric keys or the up and down keys of the control device.
  • More and more image setting parameters are added to the user interface for interacting with the user, so as to facilitate the user to adjust the parameters of the image quality according to the actual viewing scene.
  • ordinary users are often "confused" when faced with many image setting parameters. The user does not know what these parameters do at all, and how to set these parameters is even more difficult. Therefore, although the current smart TV's user interaction functions on image settings are becoming more and more perfect, users generally do not choose to adjust the parameters of these settings easily, so the effect of image quality may not be good in some viewing environments. ideal.
  • the embodiments of the present application provide a method for adjusting image display brightness and color temperature.
  • the method specifically includes:
  • Step S111 Determine whether the current time is within the first preset time.
  • a first preset time will be set as 08:00-18:00 in this application, and within this time, the user You can change the state of the adaptive image settings.
  • the user can change the first preset time according to the region. For example, if it is relatively early in the day and night at the user's location, the preset time can be set to 07:00-17:00.
  • step S112 is performed.
  • Step S112 judging whether the adaptive image setting is in an open state
  • an adaptive switch for image settings needs to be set in the user interface.
  • This switch is called Adaptive Picture Setting (APS).
  • APS Adaptive Picture Setting
  • This switch has two options: ON (open) and OFF ( Off), the existence of the switch can provide a selectivity for the user (it does not force the user to turn it on).
  • the adaptive image setting switch is in the OFF state, as shown in Figure 6.
  • the image setting parameters at this time are in a "still" state regardless of the ambient light and darkness, weather conditions, and network connection status. Only when the adaptive image setting is in the ON state, the adaptive adjustment of the effect displayed by the display device starts to enter the effective state.
  • step S113 is executed.
  • Step S113 determine whether to connect to the network
  • step S114 If the network is connected, go to step S114;
  • Step S114 Obtain the weather conditions of the current city in real time with the help of the network;
  • the weather conditions of the current city can be acquired in real time through the current web application.
  • the current city can be set by the user in advance, or can be automatically located through the positioning system.
  • the time of the network can also be synchronized by connecting to the network.
  • the brightness and color temperature of the image display can be adjusted through the acquired weather conditions.
  • the obtained weather conditions are divided into the following four categories: sunny, cloudy, overcast, and rain (snow). The characteristics of these four types of weather conditions are different.
  • the level of color temperature, the brightness and darkness of the environment, and the weather will have different effects on the hue of the viewing environment.
  • preset a set of default brightness values and color temperature values (white balance parameters) for each weather condition and then when the display device is in the state of adaptive image settings, the real-time weather conditions are obtained by connecting to the network.
  • the real-time weather conditions of the display device will be refreshed with the brightness value and color temperature value of the display device.
  • Step S115 obtaining the light intensity of the current environment
  • another condition for adjusting the image display brightness and color temperature effect is the light brightness of the viewing environment of the display device, and the measurement of the light brightness of the viewing environment uses a light sensor in this application, and the price of the light sensor is Generally, it is relatively cheap, and it can sense the changes of light in the surrounding environment more quickly and accurately.
  • the location of the light sensor is at the top of the display, as shown in Figure 5.
  • the light-sensing device can sense the brightness and darkness of the surrounding light.
  • we define the indoor light intensity as three levels: high, suitable and low. The definitions of these three levels are shown in Table 2:
  • step S114 and step S115 may be performed simultaneously, or may be performed sequentially.
  • Step S116 Adjust the brightness value and the color difference value of the image display according to the weather conditions and the light intensity.
  • the brightness and color temperature of the display device will be comprehensively judged and adjusted based on the network weather conditions and the brightness of the light. Specifically, the brightness and color temperature of the display device can be adjusted according to Table 3. .
  • step S117 If the network is not connected, go to step S117;
  • Step S117 Acquire the light intensity of the current environment, and adjust the brightness value and the color difference value of the image display according to the light intensity.
  • the brightness and color temperature values of the display device are determined by the brightness and darkness of the viewing environment, and are adjusted adaptively.
  • the light sensor senses changes in the brightness of the surrounding light
  • the brightness and color temperature of the display device will be adjusted accordingly.
  • the brightness of the surrounding viewing light will not only affect the adjustment of the brightness of the display device, but also affect the size of the color temperature value. From the perspective of indoor light brightness, the adjustment relationship between the color temperature value and the brightness value of the viewing environment is shown in Table 4:
  • step S118 is executed.
  • Step S118 Control the brightness and color difference of the image display to be restored to default values.
  • the brightness and chromatic aberration of the image display reverts to default values.
  • step S119 is performed.
  • Step S119 control the adaptive image to be set to an off state
  • a first preset time is set as 08:00-18:00 in this application, and when it is not within this time, The Adaptive Image setting is automatically set to off.
  • the brightness and color temperature of the display device will return to the default values before entering the automatic adjustment mode, and the adaptive image setting switch on the user interface will be automatically grayed out.
  • the user cannot adjust it until the next time period (time at 08: 00-18:00), if the user turns on the adaptive image setting switch again, the image setting parameters will enter the automatic adjustment mode again.
  • the adaptive image setting can also be automatically turned on between 08:00-18:00 according to user needs.
  • Step S118 is performed after step 119 , or step S118 is performed at the same time as step 119 is performed.
  • Step S111 is continued to be performed at a second preset time interval.
  • the adaptive image setting when the adaptive image setting is turned on at the first preset time, the local weather conditions and the light intensity of the current viewing environment are acquired every hour, and the image display is adjusted according to the current weather conditions and light intensity. brightness and color temperature.
  • the weather conditions obtained through the network and the light intensity of the perceived viewing environment can automatically refresh the brightness and color temperature in the image settings, thereby helping the user to adaptively adjust the viewing environment when the viewing environment changes.
  • the display effect ensures that the user can obtain a good viewing effect without manually adjusting the image settings, which is beneficial to improve the user's viewing experience.
  • Embodiments of the present application provide a display device, including:
  • Photosensitive device used to collect the light intensity of the current environment
  • a light-sensing segment interval where the light intensity is located is determined, and an image quality parameter is adjusted according to the deviation value of the light-sensing segment interval.
  • the image quality parameters include brightness, contrast, color saturation and/or white balance parameters.
  • the controller is further configured to adjust the brightness, contrast and/or color saturation of the image display according to the deviation value of the light-sensing segment interval in the following manner:
  • the adjusted color saturation is calculated according to the basic value of the current color saturation and the color saturation deviation value of the light-sensing segment interval.
  • the controller is further configured to adjust the white balance parameter of the image display according to the deviation value of the light-sensing segment interval in the following manner:
  • the adjusted white balance parameter is calculated according to the basic value of the current white balance parameter and several deviation values of the white balance parameter in the light-sensing segment interval.
  • the controller is further configured to obtain the light intensity of the current environment in the following manner:
  • Embodiments of the present application further provide an image quality compensation method, the method comprising:
  • a light-sensing segment interval where the light intensity is located is determined, and an image quality parameter is adjusted according to the deviation value of the light-sensing segment interval.
  • the image quality parameters include brightness, contrast, color saturation and/or white balance parameters.
  • adjusting the brightness, contrast and/or color saturation of the image display according to the deviation value of the light-sensing segment interval specifically including:
  • the adjusted color saturation is calculated according to the basic value of the current color saturation and the color saturation deviation value of the light-sensing segment interval.
  • the controller adjusts the white balance parameter of the image display according to the deviation value of the light-sensing segment interval, specifically including:
  • the adjusted white balance parameter is calculated according to the basic value of the current white balance parameter and several deviation values of the white balance parameter in the light-sensing segment interval.
  • the obtaining the light intensity of the current environment specifically includes:
  • the display device 200 further includes a photosensitive device 290, the photosensitive device 290 is connected to the controller 250, and the photosensitive device 290 can be disposed on the top of the display 260, as shown in FIG. 12 .
  • the light-sensing device 290 disposed on the top of the display 260 is generally not easily blocked, and can better light-sensing. As shown in FIG. 13 , the light sensing device 290 can sense light irradiation in the environment.
  • the light sensing device plays an important role in the backlight adjustment process. It has become a conventional practice to control the backlight by sensing the changes of the ambient light and effectively regulating the backlight output.
  • this solution has a relatively obvious defect, that is, the change of the backlight output caused by the change of the Lux value of the ambient light may also deteriorate its own color, white balance and other effects, and the backlight brightness will be too high. , the low backlight brightness will make the color, contrast, etc. inconspicuous.
  • an embodiment of the present application provides an image quality compensation method.
  • the method specifically includes:
  • Step S701 obtaining the light intensity of the current environment
  • the light intensity of the current environment is measured by the light sensing device.
  • the light sensing device senses the light of the surrounding ambient light
  • the light sensing device converts the abstract ambient light intensity into a quantifiable Lux value, generally The stronger the light, the larger the Lux value, and the weaker the light, the smaller the Lux value.
  • Lux is a unit of illuminance, which is the illumination intensity received at 1 meter away from a light source with a light intensity of 1cd.
  • Step S702 adjusting the backlight output value of the image display according to the light intensity
  • the Lux value corresponds to a Pwm (Pulse-Width Modulation) value
  • Pwm Pulse-Width Modulation
  • the principle of the pulse width modulation technology is to realize the technology of controlling the brightness and darkness of the backlight by controlling the duty ratio of the high level and the low level in a time period.
  • the backlight value on the user interface of the display device is dark, the high level accounts for 5% and the low level accounts for 95% in one cycle (the corresponding Pwm value in the software is 5); if the high level accounts for 95% in one cycle , the low level accounts for 5% (the corresponding Pwm value in the software is 95), at this time, the overall backlight of the display device is relatively high, and the screen is white and bright.
  • Table 5 is a mapping relationship table between ambient light and Pwm. Assuming that the Lux value of ambient light ranges from 0 to 10000, as the Lux value data gradually increases, the value of Pwm also increases, until the output of Pwm increases by 100 (100 is the maximum value). This corresponding relationship is subjectively expressed in that when the backlight (including dynamic backlight) option of the display device remains unchanged, the backlight output of the display device will change with the Lux value of the ambient light. After obtaining the light intensity of the current environment, the backlight output value corresponding to the light intensity can be determined, and the image display can be adjusted to the backlight output value.
  • the present application adopts the method of segmenting the Lux value of ambient light, and correspondingly determines the brightness, contrast, color saturation and white balance value of the display characteristics after the Pwm change in each segment. Offset within the range, thereby reducing the "loss" of image quality and improving the display effect of image quality.
  • the Lux value of ambient light that the photosensitive device can perceive is divided into 8 segments, of which 0, L0, L1, L2, L3, L4, L5, L6, and L7 are 8
  • the boundary value of the interval, the size of these 8 values satisfies the relationship of L7>L6>L5>L4>L3>L2>L1>L0>0.
  • Step S703 Determine the light-sensing segment interval where the light intensity is located
  • the light-sensing segment interval in which it is located may be determined according to the light intensity. For example, if the current light intensity is within the range of L2-L3, the light-sensing segment interval where the current light intensity is located is Level3.
  • Step S704 Adjust the image quality parameter according to the deviation value of the light-sensing segment interval.
  • step S702 and step S704 may be performed simultaneously, or may be performed sequentially.
  • the picture quality parameters include brightness, contrast, color saturation and/or white balance parameters.
  • Table 7 represents a deviation value shift of brightness, contrast, and color saturation relative to the current basic value in 8 light-sensing intervals, and the range of the shift data is -20 to 20 In between, that is to say, when the light-sensing segment interval is determined, the brightness, contrast, and color saturation will be added and subtracted based on the current basic data.
  • the base value of the current brightness is Bri_base
  • the adjusted brightness Bri_after Bri_base+Bri_shift3.
  • the base value of the current contrast is Con_base.
  • the base value of the current color saturation is Sat_base.
  • the adjusted color saturation Sat_after Sat_base+Sat_shift4.
  • Table 8 represents a shift value of the white balance value relative to the current base value in 8 light-sensing intervals, and the range of the shift data is between -50 and 50.
  • the white balance parameter also has 20 levels, and each level corresponds to a value (white balance is composed of 20 levels of data to form a curve), so when the light sensitivity value interval is determined, it needs to be divided into 20 levels. Do a deviation calculation.
  • the current white balance parameter is a curve composed of the base values Gain_base0, Gain_base1, Gain_base2,..., Gain_base17, Gain_base18, Gain_base19.
  • the light-sensing segment interval where the light intensity is detected is Level2
  • Gain_after0 Gain_base0+GainShift20
  • Gain_after1 Gain_base1+ GainShift21
  • Gain_after2 Gain_base2+GainShift22
  • Gain_after17 Gain_base17+GainShift217
  • Gain_after18 Gain_base18+GainShift218,
  • Gain_after219 Gain_base219+GainShift219
  • the white balance parameters after adjustment are based on the base values Gain_after 0, Gain_after 1, Gain_after 2,..., Gain_after Gain_after 18, Gain_after 19 form a curve.
  • the light intensity of the current environment is acquired at a preset time interval, and the backlight output value, brightness, contrast, color saturation, and white balance parameters are adjusted according to the light intensity of the current environment.
  • the light intensity of the current environment is acquired in real time, and the backlight output value, brightness, contrast, color saturation, and white balance parameters are adjusted according to the light intensity of the current environment.
  • the light intensity of the environment can be sensed by the light sensing device, and the light intensity is segmented, and the deviation value of the image quality parameter is set for each segment interval. While adjusting the backlight output according to the light intensity, the image quality parameters are adjusted according to the deviation value of the segment interval where the current light intensity is located to compensate for the lack of image quality effect, which can effectively improve the display effect and enhance the user experience.

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Abstract

本申请公开了一种图像显示亮度和色差的调整方法及显示设备，包括：在第一预设时间内，如果自适应图像设置为开启状态且与已连接网络，借助网络实时获取当前城市的天气状况，获取当前环境的光线强度；根据所述天气状况和所述光线强度调整图像显示的亮度值和色差值。

Description

一种图像显示亮度和色差的调整方法及显示设备
本申请要求在2021年3月10日提交的、申请号为202110258419.7、发明名称为“一种图像显示亮度和色差的调整方法及显示设备”的中国专利申请的优先权，其全部内容通过引用结合在本申请中；申请要求在2021年3月15日提交的、申请号为202110275517.1、发明名称为“一种画质补偿方法及显示设备”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及显示技术领域，尤其涉及一种图像显示亮度和色差的调整方法及显示设备。
背景技术
当前，随着智能液晶电视的发展和4K HDR(High Dynamic Range Imaging，高动态范围成像)技术的普及，用户对于收看电视的需求也已经发生了很大的变化，对高画质的追求已经是不可阻挡的趋势。
发明内容
本申请实施例提供一种图像显示亮度和色差的调整方法及显示设备，
第一方面，提供一种显示设备，包括：
显示器；
控制器，用于执行：
在第一预设时间内，如果自适应图像设置为开启状态且与已连接网络，借助网络实时获取当前城市的天气状况，获取当前环境的光线强度；
根据所述天气状况和所述光线强度调整图像显示的亮度值和色差值。
附图说明
图1示例性示出了根据一些实施例的显示设备的使用场景；
图2示例性示出了根据一些实施例的控制装置100的硬件配置框图；
图3示例性示出了根据一些实施例的显示设备200的硬件配置框图；
图4示例性示出了根据一些实施例的显示设备200中软件配置图；
图5示例性示出了根据一些实施例的显示器的结构示意图；
图6-图10中示例性示出了根据一些实施例的一种用户界面示意图；
图11示例性示出了根据一些实施例的一种图像显示亮度和色温调整方法的流程图；
图12示例性示出了根据一些实施例的显示器的结构示意图；
图13示例性示出了根据一些实施例的一种光线强度感知示意图；
图14示例性示出了根据一些实施例的一种画质补偿方法的流程图。
具体实施方式
为使本申请的目的和实施方式更加清楚，下面将结合本申请示例性实施例中的附图，对本申请示例性实施方式进行清楚、完整地描述，显然，描述的示例性实施例仅是本申请一部分实施例，而不是全部的实施例。
需要说明的是，本申请中对于术语的简要说明，仅是为了方便理解接下来描述的实施方式，而不是意图限定本申请的实施方式。除非另有说明，这些术语应当按照其普通和通常的含义理解。
本申请中说明书和权利要求书及上述附图中的术语“第一”、“第二”、“第三”等是用于区别类似或同类的对象或实体，而不必然意味着限定特定的顺序或先后次序，除非另外注明。应该理解这样使用的用语在适当情况下可以互换。
术语“包括”和“具有”以及他们的任何变形，意图在于覆盖但不排他的包含，例如，包含了一系列组件的产品或设备不必限于清楚地列出的所有组件，而是可包括没有清楚地列出的或对于这些产品或设备固有的其它组件。
术语“模块”是指任何已知或后来开发的硬件、软件、固件、人工智能、模糊逻辑或硬件或/和软件代码的组合，能够执行与该元件相关的功能。
图1为根据实施例中显示设备的使用场景的示意图。如图1所示，显示设备200还与服务器400进行数据通信，用户可通过智能设备300或控制装置100操作显示设备200。
在一些实施例中，控制装置100可以是遥控器，遥控器和显示设备的通信包括红外协议通信或蓝牙协议通信，及其他短距离通信方式中的至少一种，通过无线或有线方式来控制显示设备200。用户可以通过遥控器上按键、语音输入、控制面板输入等至少一种输入用户指令，来控制显示设备200。
在一些实施例中，智能设备300可以包括移动终端、平板电脑、计算机、笔记本 电脑，AR/VR设备等中的任意一种。
在一些实施例中，显示设备可以不使用上述的智能设备或控制设备接收指令，而是通过触摸或者手势等接收用户的控制。
在一些实施例中，也可以使用智能设备300以控制显示设备200。例如，使用在智能设备上运行的应用程序控制显示设备200。
在一些实施例中，也可以使用智能设备300和显示设备进行数据的通信。
在一些实施例中，显示设备200还可以采用除了控制装置100和智能设备300之外的方式进行控制，例如，可以通过显示设备200设备内部配置的获取语音指令的模块直接接收用户的语音指令控制，也可以通过显示设备200设备外部设置的语音控制装置来接收用户的语音指令控制。
在一些实施例中，显示设备200还与服务器400进行数据通信。可允许显示设备200通过局域网(LAN)、无线局域网(WLAN)和其他网络进行通信连接。服务器400可以向显示设备200提供各种内容和互动。服务器400可以是一个集群，也可以是多个集群，可以包括一类或多类服务器。
在一些实施例中，一个步骤执行主体执行的软件步骤可以随需求迁移到与之进行数据通信的另一步骤执行主体上进行执行。示例性的，服务器执行的软件步骤可以随需求迁移到与之数据通信的显示设备上执行，反之亦然。
图2示例性示出了根据示例性实施例中控制装置100的配置框图。如图2所示，控制装置100包括控制器110、通信接口130、用户输入/输出接口140、存储器、供电电源。控制装置100可接收用户的输入操作指令，且将操作指令转换为显示设备200可识别和响应的指令，起用用户与显示设备200之间交互中介作用。
在一些实施例中，通信接口130用于和外部通信，包含WIFI芯片，蓝牙模块，NFC或可替代模块中的至少一种。
在一些实施例中，用户输入/输出接口140包含麦克风，触摸板，传感器，按键或可替代模块中的至少一种。
图3示出了根据示例性实施例中显示设备200的硬件配置框图。
在一些实施例中，显示设备200包括调谐解调器210、通信器220、检测器230、外部装置接口240、控制器250、显示器260、音频输出接口270、存储器、供电电源、用户接口中的至少一种。
在一些实施例中控制器包括中央处理器，视频处理器，音频处理器，图形处理器，RAM，ROM，用于输入/输出的第一接口至第n接口。
在一些实施例中，显示器260包括用于呈现画面的显示屏组件，以及驱动图像显 示的驱动组件，用于接收源自控制器输出的图像信号，进行显示视频内容、图像内容以及菜单操控界面的组件以及用户操控UI界面等。
在一些实施例中，显示器260可为液晶显示器、OLED显示器、以及投影显示器中的至少一种，还可以为一种投影装置和投影屏幕。
在一些实施例中，调谐解调器210通过有线或无线接收方式接收广播电视信号，以及从多个无线或有线广播电视信号中解调出音视频信号，如以及EPG数据信号。
在一些实施例中，通信器220是用于根据各种通信协议类型与外部设备或服务器进行通信的组件。例如：通信器可以包括Wifi模块，蓝牙模块，有线以太网模块等其他网络通信协议芯片或近场通信协议芯片，以及红外接收器中的至少一种。显示设备200可以通过通信器220与控制装置100或服务器400建立控制信号和数据信号的发送和接收。
在一些实施例中，检测器230用于采集外部环境或与外部交互的信号。例如，检测器230包括光接收器，用于采集环境光线强度的传感器；或者，检测器230包括图像采集器，如摄像头，可以用于采集外部环境场景、用户的属性或用户交互手势，再或者，检测器230包括声音采集器，如麦克风等，用于接收外部声音。
在一些实施例中，外部装置接口240可以包括但不限于如下：高清多媒体接口(HDMI)、模拟或数据高清分量输入接口(分量)、复合视频输入接口(CVBS)、USB输入接口(USB)、RGB端口等任一个或多个接口。也可以是上述多个接口形成的复合性的输入/输出接口。
在一些实施例中，控制器250和调谐解调器210可以位于不同的分体设备中，即调谐解调器210也可在控制器250所在的主体设备的外置设备中，如外置机顶盒等。
在一些实施例中，控制器250，通过存储在存储器上中各种软件控制程序，来控制显示设备的工作和响应用户的操作。控制器250控制显示设备200的整体操作。例如：响应于接收到用于选择在显示器260上显示UI对象的用户命令，控制器250便可以执行与由用户命令选择的对象有关的操作。
在一些实施例中，所述对象可以是可选对象中的任何一个，例如超链接、图标或其他可操作的控件。与所选择的对象有关操作有：显示连接到超链接页面、文档、图像等操作，或者执行与所述图标相对应程序的操作。
在一些实施例中控制器包括中央处理器(Central Processing Unit，CPU)，视频处理器，音频处理器，图形处理器(Graphics Processing Unit，GPU)，RAM Random Access Memory，RAM)，ROM(Read-Only Memory,ROM)，用于输入/输出的第一接口至 第n接口，通信总线(Bus)等中的至少一种。
CPU处理器。用于执行存储在存储器中操作系统和应用程序指令，以及根据接收外部输入的各种交互指令，来执行各种应用程序、数据和内容，以便最终显示和播放各种音视频内容。CPU处理器，可以包括多个处理器。如，包括一个主处理器以及一个或多个子处理器。
在一些实施例中，图形处理器，用于产生各种图形对象，如：图标、操作菜单、以及用户输入指令显示图形等中的至少一种。图形处理器包括运算器，通过接收用户输入各种交互指令进行运算，根据显示属性显示各种对象；还包括渲染器，对基于运算器得到的各种对象，进行渲染，上述渲染后的对象用于显示在显示器上。
在一些实施例中，视频处理器，用于将接收外部视频信号，根据输入信号的标准编解码协议，进行解压缩、解码、缩放、降噪、帧率转换、分辨率转换、图像合成等视频处理中的至少一种，可得到直接可显示设备200上显示或播放的信号。
在一些实施例中，视频处理器，包括解复用模块、视频解码模块、图像合成模块、帧率转换模块、显示格式化模块等中的至少一种。其中，解复用模块，用于对输入音视频数据流进行解复用处理。视频解码模块，用于对解复用后的视频信号进行处理，包括解码和缩放处理等。图像合成模块，如图像合成器，其用于将图形生成器根据用户输入或自身生成的GUI信号，与缩放处理后视频图像进行叠加混合处理，以生成可供显示的图像信号。帧率转换模块，用于对转换输入视频帧率。显示格式化模块，用于将接收帧率转换后视频输出信号，改变信号以符合显示格式的信号，如输出RGB数据信号。
在一些实施例中，音频处理器，用于接收外部的音频信号，根据输入信号的标准编解码协议，进行解压缩和解码，以及降噪、数模转换、和放大处理等处理中的至少一种，得到可以在扬声器中播放的声音信号。
在一些实施例中，用户可在显示器260上显示的图形用户界面(GUI)输入用户命令，则用户输入接口通过图形用户界面(GUI)接收用户输入命令。或者，用户可通过输入特定的声音或手势进行输入用户命令，则用户输入接口通过传感器识别出声音或手势，来接收用户输入命令。
在一些实施例中，“用户界面”，是应用程序或操作系统与用户之间进行交互和信息交换的介质接口，它实现信息的内部形式与用户可以接受形式之间的转换。
在一些实施例中，用户接口280，为可用于接收控制输入的接口(如：显示设备本体上的实体按键，或其他等)。
在一些实施例中，显示设备200还包括光线传感器290，光线传感器290与控制器250连接，光线传感器290可设置于显示器260的顶端，如图5所示。光线传感器290设于显示器260的顶端一般不易被遮挡，能更好的感光。
在一些实施例中，显示设备的系统可以包括内核(Kernel)、命令解析器(shell)、文件系统和应用程序。内核、shell和文件系统一起组成了基本的操作系统结构，它们让用户可以管理文件、运行程序并使用系统。上电后，内核启动，激活内核空间，抽象硬件、初始化硬件参数等，运行并维护虚拟内存、调度器、信号及进程间通信(IPC)。内核启动后，再加载Shell和用户应用程序。应用程序在启动后被编译成机器码，形成一个进程。
参见图4，在一些实施例中，将系统分为四层，从上至下分别为应用程序(Applications)层(简称“应用层”)，应用程序框架(Application Framework)层(简称“框架层”)，安卓运行时(Android runtime)和系统库层(简称“系统运行库层”)，以及内核层。
在一些实施例中，应用程序层中运行有至少一个应用程序，这些应用程序可以是操作系统自带的窗口(Window)程序、系统设置程序或时钟程序等；也可以是第三方开发者所开发的应用程序。在具体实施时，应用程序层中的应用程序包不限于以上举例。
框架层为应用程序层的应用程序提供应用编程接口(application programming interface，API)和编程框架。应用程序框架层包括一些预先定义的函数。应用程序框架层相当于一个处理中心，这个中心决定让应用层中的应用程序做出动作。应用程序通过API接口，可在执行中访问系统中的资源和取得系统的服务。
如图4所示，本申请实施例中应用程序框架层包括管理器(Managers)，内容提供者(Content Provider)等，其中管理器包括以下模块中的至少一个：活动管理器(Activity Manager)用与和系统中正在运行的所有活动进行交互；位置管理器(Location Manager)用于给系统服务或应用提供了系统位置服务的访问；文件包管理器(Package Manager)用于检索当前安装在设备上的应用程序包相关的各种信息；通知管理器(Notification Manager)用于控制通知消息的显示和清除；窗口管理器(Window Manager)用于管理用户界面上的括图标、窗口、工具栏、壁纸和桌面部件。
在一些实施例中，活动管理器用于管理各个应用程序的生命周期以及通常的导航回退功能，比如控制应用程序的退出、打开、后退等。窗口管理器用于管理所有的窗口程序，比如获取显示屏大小，判断是否有状态栏，锁定屏幕，截取屏幕，控制显示 窗口变化(例如将显示窗口缩小显示、抖动显示、扭曲变形显示等)等。
在一些实施例中，系统运行库层为上层即框架层提供支撑，当框架层被使用时，安卓操作系统会运行系统运行库层中包含的C/C++库以实现框架层要实现的功能。
在一些实施例中，内核层是硬件和软件之间的层。如图4所示，内核层至少包含以下驱动中的至少一种：音频驱动、显示驱动、蓝牙驱动、摄像头驱动、WIFI驱动、USB驱动、HDMI驱动、传感器驱动(如指纹传感器，温度传感器，压力传感器等)、以及电源驱动等。
第一方面：
图6-图10中示例性示出了显示设备200提供的一个用户界面的示意图。
如图6所示，显示设备可向显示器提供GUI，该GUI可提供不同图像内容的展示区，展示区中布置多个不同控件。例如，展示区51内包括控件511～519，控件511～519分别为颜色、色调、清晰度、电视的长宽比、自适应图像设置、高级设置、校准设定、低蓝光和应用图像设置。以及该GUI还包括指示任一控件被选择的选择器52，可通过用户操作控制装置的输入而移动选择器在GUI中的位置或移动各控件在GUI中的位置，以改变选择不同的控件。例如，选择器52指示控件515被选择。
需要说明的是，控件是指在显示设备200中GUI的各展示区中显示以表示诸如图标、缩略图、视频剪辑、链接等对应内容的视觉对象，这些控件可以为用户提供通过数据广播接收的各种传统节目内容、以及由内容制造商设置的各种应用和服务内容。
一些实施例中，控件可以表示电影、电视剧的图像内容或视频剪辑、音乐的音频内容、应用程序，或其他用户访问内容历史信息。如控件为电影或电视剧时，控件可显示为电影或电视剧的海报、电影或电视剧的预告片的视频剪辑动态画面。如控件为音乐时，可显示音乐专辑的海报。如控件为应用程序时，可显示为应用程序的图标，或当应用程序被执行最近执行时捕捉到应用程序的内容截图。如控件为用户访问历史时，可显示为最近执行过程中内容截图。
一些实施例中，控件可以表示显示设备200与外部设备连接的接口或接口集合，或可表示连接至显示设备的外部设备名称等。如：信号源输入接口集合、或HDMI接口、USB接口、PC端子接口等。
控件的展示形式通常多样化。例如，控件可以包括文本内容和/或用于显示与文本内容相关的缩略图的图像，或与文本相关的视频剪辑。又如，控件可以是应用程序的文本和/或图标。
还需说明的是，选择器用于指示其中任一控件已被选择，如焦点对象。一方面，可根据用户通过控制装置100的输入，控制显示设备200中显示焦点对象的移动来选择或控制控件。如：用户可通过控制装置100上方向键控制焦点对象在控件之间的移动来选择和控制控件。另一方面，可根据用户通过控制装置100的输入，控制显示设备200中显示的各控件的移动来使得焦点对象选择或控制控件。如：用户可通过控制装置100上方向键控制各控件一并进行左右移动，以在保持焦点对象的位置不变时使得焦点对象选择和控制控件。
选择器的标识形式通常多样化。示例的，通过放大控件来实现或标识焦点对象的位置，通过设置控件背景色来实现或标识焦点对象的位置，也可以通过改变聚焦控件的文本或图像的边框线、尺寸、颜色、透明度和轮廓和/或字体等标识焦点对象的位置。
图6中，自适应图像设置是关闭状态，选择器52指示自适应图像设置被选择。当用户通过按压控制装置的确认键后，如图7所示，可将自适应图像设置由关闭状态更改为开启状态。在图7中，如果用户再次按压控制装置的确认键，可将自适应图像设置由开启状态更改为关闭状态，如图6所示。
在一些实施例中，自适应图像设置开启状态和关闭状态的切换只发生在预定时间内，例如当天8:00-18:00的时间段内可更改自适应图像设置的状态。而当天18：00至次日8:00自适应图像设置默认设置为关闭状态，且自适应图像设置自动置灰，如图8所示，用户无法更改自适应图像设置的状态。
在一些实施例中，在图9中，选择器52指示自适应图像设置被选择。当用户通过按压控制装置的确认键或方向右键后，如图10所示，该用户界面还包括控件5151-5153，控件5151-5153分别为自适应图像设置状态、自动开启和时间设置。当选择器52指示自适应图像设置状态被选择，用户可通过按压控制装置的确认键更改自适应图像设置的状态。当选择器52指示自动开启被选择，用户可通过按压控制装置的确认键设置自动开启是开启还是关闭状态。以8:00-18:00为例，自动开启关闭时，当时间到达18:00之后时，适应图像设置自动设置为关闭状态，当第二天8:00以后，适应图像设置仍为关闭状态，除非用户在8:00以后手动将适应图像设置更改为开启状态。自动开启时，当时间到达18:00之后时，适应图像设置自动设置为关闭状态，当第二天8:00以后，适应图像设置自动更改为开启状态，无需用户手动更改。鉴于用户所在的地理位置不同，太阳升起和落下的时间亦不相同，因此，用户可根据所在位置的太阳升起和落下的时间设置适应图像设置的更改时间。当选择器52指示时间设置被选择，用户可通过按压控制装置的数字键或上下键对适应图像设置可更改的时间进行修改。
用户界面上增加了越来越多图像设置参数用于与用户交互，以方便用户根据实际的观看场景去调整画质的参数。然而，普通的用户面对诸多的图像设置参数往往比较“迷茫”，用户根本不清楚这些参数有什么作用，而如何去设置这些参数更是一个难题。所以，虽然当前的智能电视在图像设置上的用户交互功能做地越来越完善，但是用户一般不会轻易地去选择调整这些设置的参数，因此在某些收看环境下画质的效果可能不理想。
为解决上述技术问题，本申请实施例提供一种图像显示亮度和色温的调整方法。
如图11所示，所述方法具体包括：
步骤S111:判断当前时间是否在第一预设时间内。
在一些实施例中，考虑到夜间用户使用显示设备时的亮暗程度不好控制，本申请中会设置一个第一预设时间为08:00-18:00，当处于这个时间之内，用户可更改自适应图像设置的状态。用户可根据所在地域更改第一预设时间。例如，用户所在地天亮和天黑相对比较早，可将预设时间设置为07:00-17:00。
如果当前时间在第一预设时间内，执行步骤S112。
步骤S112：判断自适应图像设置是否是开启状态；
在一些实施例中，在用户界面需要设置一个图像设置的自适应的开关，这个开关称为自适应图像设置(Adaptive Picture Setting，APS)，这个开关有两个选项：ON(开启)和OFF(关闭)，开关的存在可以为用户提供一种选择性(不强制用户一定去开启)。默认情况下，自适应图像设置开关是处于OFF的状态，如图6所示。
当自适应图像设置处于OFF状态时，无论此时的环境亮暗、天气状况、网络连接状态如何，此时的图像设置参数都是处于“静止”的状态。只有当自适应图像设置处于ON状态时，显示设备显示的效果的自适应调整才开始进入有效的状态。
如果自适应图像设置是开启状态，执行步骤S113。
步骤S113：判断是否连接网络；
如果已连接网络，执行步骤S114；
步骤S114：借助网络实时获取当前城市的天气状况；
在一些实施例中，可通过当前网络应用实时获取当前城市的天气状况。当前城市可由用户提前设置，也可通过定位系统自动定位。通过连接网络也可以同步网络的时间。
在一些实施例中，可以通过获取的天气状况对图像显示的亮度和色温进行调整。获取的天气状况分为以下几种：晴朗、多云、阴天、雨(雪)四类。这四类天气状况 的特点各不相同，我们主要从这四类天气对色温和环境光线的亮暗情况进行大概的分类如表1所示：
表1
Figure PCTCN2021134351-appb-000001
根据表1中的数据，在不同的天气状况下色温的高低程度、环境的亮暗程度和天气对观看环境的色调都会有不同的影响。首先为每种天气状况预置一组默认的亮度值和色温值(白平衡参数)，然后当显示设备处于自适应图像设置开启状态时，通过连接网络，获取到实时的天气状况，根据获取到的实时天气状况，将显示设备的亮度值和色温值进行刷新。
步骤S115：获取当前环境的光线强度；
在一些实施例中，调整图像显示亮度和色温效果基于的另一个条件是显示设备观看环境的光线亮度，而对于观看环境的光线亮度的测量在本申请中借助的是光线传感器，光线传感器的价格一般比较便宜，通过它可以较为迅速、准确的感知周围环境中光线的变化。光线传感器的位置位于显示器顶部，如图5所示。
当用户界面上的自适应图像设置开关开启时，光线传感器就开始处于工作状态。光感器件可以感知到周围光线的亮暗变化。本申请中我们将室内的光线强度定义为高、适宜、低三个级别，关于这三个级别的定义，如表2所示：
表2
室内光线强度 室内光线亮暗等级
<＝a 低
>a&&<＝b 适宜
>b 高
在一些实施例中，步骤S114和步骤S115可同时进行，也可以先后进行。
步骤S116：根据天气状况和光线强度调整图像显示的亮度值和色差值。
在一些实施例中，如果显示设备连接网络，那么显示设备的亮度和色温值就会由网络天气状况和光线亮暗来综合判断，并且进行调整，具体可按照表3调整显示设备的亮度和色温。
表3
Figure PCTCN2021134351-appb-000002
如果未连接网络，执行步骤S117；
步骤S117：获取当前环境的光线强度，根据光线强度调整图像显示的亮度值和色差值。
在一些实施例中，未连接网络时，显示设备的亮度和色温值由观看环境的亮暗程度来决定，并进行自适应调整。当光线传感器感知到周围光线的亮暗发生变化时，相应的也会对显示设备的亮度和色温进行调整。周围观看光线的亮暗不仅会影响显示设备亮度的调节，也同样的会影响色温值的大小。从室内光线亮度的角度来说，观看环境的色温值和亮度值的调整关系如表4所示：
表4
光线强度 亮度值调整 色温值调整
高 降低亮度 降低色温值
适宜 保持不变 保持不变
低 增强亮度 增强色温值
如果自适应图像设置不是开启状态，执行步骤S118。
步骤S118：控制图像显示的亮度和色差恢复为默认值。
在一些实施例中，一旦用户将自适应图像设置为关闭状态，图像显示的亮度和色差就会恢复为默认值。
如果当前时间不在第一预设时间内，执行步骤S119。
步骤S119：控制自适应图像设置为关闭状态；
在一些实施例中，考虑到夜间用户使用显示设备时的亮暗程度不好控制，本申请 中会设置一个第一预设时间为08:00-18:00，当不处于这个时间之内，自适应图像设置自动设为关闭状态。显示设备的亮度和色温就会回到进入自动调整模式前的默认值，用户界面上的自适应图像设置开关会自动置灰，此时用户就无法调整，等到下一个时间周期(时间位于08:00-18:00之间时)，如果用户再次开启自适应图像设置开关时，图像的设置参数会再次进入自动调整模式。还可以根据用户需要在08:00-18:00自动开启自适应图像设置。
在步骤119之后执行步骤S118，或在执行步骤119的同时执行步骤S118。
间隔第二预设时间继续执行步骤S111。
在一些实施例中，在第一预设时间且自适应图像设置开启时，每间隔一个小时获取一次当地的天气状况和当前的观看环境的光线强度，根据当前的天气状况和光线强度调整图像显示的亮度和色温。
在上述实施例中，在某一时间段内，可通过网络获取的天气状况以及感知观看环境的光线强度自动刷新图像设置中亮度和色温，从而帮助用户在观看环境发生变化时，自适应地调整显示效果，保证用户可以不用去手动的调整图像设置也可以获得良好的观看效果，有利于提升用户的观看体验。
第二方面：
本申请实施方式提供一种显示设备，包括：
显示器；
光感器件，用于采集当前环境的光线强度；
控制器，用于执行：
获取当前环境的光线强度，根据所述光线强度调整图像显示的背光输出值；
确定所述光线强度所在光感段位区间，根据所述光感段位区间的偏差值调整画质参数。
在本申请一些实施例中，所述画质参数包括亮度、对比度、颜色饱和度和/或白平衡参数。
在本申请一些实施例中，所述控制器，还用于采用以下方式执行根据所述光感段位区间的偏差值调整图像显示的亮度、对比度和/或颜色饱和度：
根据当前亮度的基础值和所述光感段位区间的亮度偏差值计算调整后亮度；和/或，
根据当前对比度的基础值和所述光感段位区间的对比度偏差值计算调整后对比度 值；和/或，
根据当前颜色饱和度的基础值和所述光感段位区间的颜色饱和度偏差值计算调整后颜色饱和度。
在本申请一些实施例中，所述控制器，还用于采用以下方式执行根据所述光感段位区间的偏差值调整图像显示的白平衡参数：
根据当前白平衡参数的基础值和所述光感段位区间的白平衡参数的数个偏差值计算调整后白平衡参数。
在本申请一些实施例中，所述控制器，还用于用以下方式执行获取当前环境的光线强度：
间隔预设时间获取当前环境的光线强度。
本申请实施方式还提供一种画质补偿方法，所述方法包括：
获取当前环境的光线强度，根据所述光线强度调整图像显示的背光输出值；
确定所述光线强度所在光感段位区间，根据所述光感段位区间的偏差值调整画质参数。
在本申请一些实施例中，所述画质参数包括亮度、对比度、颜色饱和度和/或白平衡参数。
在本申请一些实施例中，根据所述光感段位区间的偏差值调整图像显示的亮度、对比度和/或颜色饱和度，具体包括：
根据当前亮度的基础值和所述光感段位区间的亮度偏差值计算调整后亮度；和/或，
根据当前对比度的基础值和所述光感段位区间的对比度偏差值计算调整后对比度值；和/或，
根据当前颜色饱和度的基础值和所述光感段位区间的颜色饱和度偏差值计算调整后颜色饱和度。
在本申请一些实施例中，所述控制器，根据所述光感段位区间的偏差值调整图像显示的白平衡参数，具体包括：
根据当前白平衡参数的基础值和所述光感段位区间的白平衡参数的数个偏差值计算调整后白平衡参数。
在本申请一些实施例中，所述获取当前环境的光线强度，具体包括：
间隔预设时间获取当前环境的光线强度。
在一些实施例中，显示设备200还包括光感器件290，光感器件290与控制器250连接，光感器件290可设置于显示器260的顶端，如图12所示。光感器件290设于显示器260的顶端一般不易被遮挡，能更好的感光。如图13所示，光感器件290可以感应到环境中的光线照射。
光感器件在背光调整过程中发挥着重要作用，通过感知周围环境光的变化，对背光输出进行有效的调控，已经成为控制背光的一个常规的做法。但是这种方案有着一个比较明显的缺陷，那就是环境光Lux值变化带来的背光输出的变化可能使本身的色彩、白平衡等效果也变差，背光亮度过高会使画面浮白现象严重，背光亮度偏低又会使颜色、对比度等变得不明显。
为解决上述技术问题，本申请实施例提供一种画质补偿方法。
如图14所示，所述方法具体包括：
步骤S701:获取当前环境的光线强度；
在一些实施例中，当前环境的光线强度由光感器件测得，当光感器件感知周围环境光的光线时，光感器件会将抽象的环境光线强弱转化为可以量化的Lux值，一般来说光线越强，Lux值越大，光线越弱，Lux值越小。Lux是照度单位，为距离一个光强为1cd的光源，在1米处接受的照明强度。
步骤S702：根据光线强度调整图像显示的背光输出值；
在一些实施例中，Lux值会对应一个Pwm(Pulse-Width Modulation,脉宽调制技术)值，并将Pwm值作为最终背光输出的一个重要判断依据。其中，脉宽调制技术的原理是通过控制一个时间周期内的高电平和低电平的占空比来实现控制背光亮暗的技术。例如：显示设备用户界面上背光值较暗时，一个周期内高电平占5％，低电平占95％(对应软件中的Pwm值为5)；如果一个周期内高电平占95％，低电平占5％(对应软件中的Pwm值为95)，此时显示设备的整体背光比较高，屏幕发白发亮。
如表5所示，表5是环境光和Pwm的一种映射关系表。假设环境光Lux值范围为0-10000，随着Lux值数据的逐渐增大，Pwm的值也随之增大，直到Pwm输出增大的100(100为最大值)。此对应关系表现在主观上则为当显示设备的backlight(包括动态背光)选项保持状态不变时，显示设备的背光输出会随着环境光线的Lux值进行变化。在获取到当前环境的光线强度后，可确定该光线强度对应的背光输出值，并将图像显示调整至该背光输出值。
表5
环境光强度(Lux值) 背光输出(Pwm)
0 20
15 21
40 22
55 23
70 24
…. …
5000 80
……. ……..
10000 100
另外，从表5中也能看出另外一个规律，Pwm的变化在中间的Lux范围内变化幅度会大一些，而在两端Lux范围内变化较小，一般用户很少在环境光线非常非常暗或者环境光线非常非常强的范围内去观看显示设备，也就没有必要在Lux值的两端去对显示设备的背光输出去做大幅度的“调控”。
根据当前光线强度调控背光的两大特点：一是光感对显示设备运行时背光的控制会产生画面“浮白”或者亮度不够的缺点，对画质产生一定的“损耗”；二是光感器件感知环境光线Lux值的变化在中间范围内会使Pwm输出产生大幅度的变化，而在Lux值较大或者较小时变化的幅度相对较小。
基于上述的两个特点，本申请采用对环境光的Lux值进行分段的方法，对每个段位内的Pwm变化后的显示特点相应的对亮度、对比度、颜色饱和度、白平衡值进行一定范围内的偏移，从而减少画质“损耗”，提升画质显示效果。
在一些实施例中，如表6所示，将光感器件可以感知的环境光的Lux值分为8个段位区间，其中0，L0，L1，L2，L3L4，L5，L6，L7是8个区间的边界值，这8个值的大小满足L7>L6>L5>L4>L3>L2>L1>L0>0的关系。
表6
光感段位区间 区间最小值 区间最大值
Level0 0 L0
Level1 L0 L1
Level2 L1 L2
Level3 L2 L3
Level4 L3 L4
Level5 L4 L5
Level6 L5 L6
Level7 L6 L7
步骤S703：确定所述光线强度所在光感段位区间；
在一些实施例中，可根据光线强度确定其所在的光感段位区间。例如，当前光线强度在L2-L3的范围内，则当前光线强度所在光感段位区间为Level3。
步骤S704：根据光感段位区间的偏差值调整画质参数。
在一些实施例中，步骤S702和步骤S704可同时进行，也可以先后进行。
在一些实施例中，画质参数包括亮度、对比度、颜色饱和度和/或白平衡参数。
在一些实施例中，如表7所示，表7代表在8个光感区间内亮度、对比度、颜色饱和度相对于当前基础值的一个偏差值shift，并且shift数据的范围在-20～20之间，也就是说光感段位区间确定的情况下，亮度、对比度、颜色饱和度会在当前基础数据的基础上做一个加减运算。
例如：当前亮度的基础值为Bri_base，当检测到光线强度所在光感段位区间为Level3时，调整后亮度Bri_after＝Bri_base+Bri_shift3。
当前对比度的基础值为Con_base，当检测到光线强度所在光感段位区间为Level1时，调整后对比度Con_after＝Con_base+Con_shift1。
当前颜色饱和度的基础值为Sat_base，当检测到光线强度所在光感段位区间为Level4时，调整后颜色饱和度Sat_after＝Sat_base+Sat_shift4。
表7
Figure PCTCN2021134351-appb-000003
在一些实施例中，如表8所示，表8代表在8个光感区间内白平衡值相对于当前基础值的一个偏差值shift，并且shift数据的范围在-50～50之间，需要特别说明的是白平衡参数也有20个level，每个level下对应一个值(白平衡是由20个level的数据组成一条curve)，因此当光感值区间确定之后还需要在20个level上分别进行做偏差计算。
例如：当前白平衡参数是由基础值Gain_base0，Gain_base1，Gain_base2，…，Gain_base17，Gain_base18，Gain_base19组成一条曲线，当检测到光线强度所在光感段位区间为Level2时，Gain_after0＝Gain_base0+GainShift20，Gain_after1＝Gain_base1+ GainShift21，Gain_after2＝Gain_base2+GainShift22，…，Gain_after17＝Gain_base17+GainShift217，Gain_after18＝Gain_base18+GainShift218，Gain_after219＝Gain_base219+GainShift219，调整后白平衡参数由基础值Gain_after 0，Gain_after 1，Gain_after 2，…，Gain_after 17，Gain_after 18，Gain_after 19组成一条曲线。
表8
Figure PCTCN2021134351-appb-000004
在一些实施例中，间隔预设时间获取一次当前环境的光线强度，根据当前环境的光线强度调整背光输出值、亮度、对比度、颜色饱和度和白平衡参数等。
在另一些实施例中，实时获取当前环境的光线强度，根据当前环境的光线强度调整背光输出值、亮度、对比度、颜色饱和度和白平衡参数等。
在本申请实施例汇总，当环境光线的Lux值发生变化时，需要对显示设备的背光输出进行控制之外，如果环境光线的Lux值跨越了光感段位区间时，还需要对亮度、对比度、颜色饱和度、白平衡数据进行基础数据的偏移，这种方式既保证了Lux值变化时，背光的正常效果，同时又对画质效果进行了校正，减少了背光变化时画质效果的“损耗”。
在上述实施例中，通过光感器件能够感知到环境的光线强度，对光线强度进行分段处理，每个段位区间设置有画质参数的偏差值。在根据光线强度调整背光输出的同时，根据当前光线强度所在段位区间的偏差值对画质参数进行调整，对画质效果的缺失进行补偿，能有效改善显示效果，提升用户体验。
最后应说明的是：以上各实施例仅用以说明本申请的技术方案，而非对其限制；尽管参照前述各实施例对本申请进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分或者全部技 术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本申请各实施例技术方案的范围。
为了方便解释，已经结合具体的实施方式进行了上述说明。但是，上述示例性的讨论不是意图穷尽或者将实施方式限定到上述公开的具体形式。根据上述的教导，可以得到多种修改和变形。上述实施方式的选择和描述是为了更好的解释原理以及实际的应用，从而使得本领域技术人员更好的使用所述实施方式以及适于具体使用考虑的各种不同的变形的实施方式。

Claims (10)

  1. 一种显示设备，包括：
    显示器；
    控制器，用于执行：
    在第一预设时间内，如果自适应图像设置为开启状态且与已连接网络，借助网络实时获取当前城市的天气状况，获取当前环境的光线强度；
    根据所述天气状况和所述光线强度调整图像显示的亮度值和色差值。
  2. 根据权利要求1所述的显示设备，所述控制器，还用于执行：
    在第一预设时间内，如果自适应图像设置为开启状态且与未连接网络，获取当前环境的光线强度；
    根据所述光线强度调整图像显示的亮度值和色差值。
  3. 根据权利要求1所述的显示设备，所述控制器，还用于执行：
    在非第一预设时间内，控制所述自适应图像设置为关闭状态且用户无法开启所述自适应图像设置，控制图像显示的亮度和色差恢复为默认值。
  4. 根据权利要求1所述的显示设备，所述控制器，还用于执行：
    间隔第二预设时间获取当前城市的天气状况；
    间隔第二预设时间获取当前环境的光线强度；
    根据所述天气状况和所述光线强度调整图像显示的亮度值和色差值。
  5. 根据权利要求1所述的显示设备，所述光线强度包括低级别、适宜级别和高级别，所述天气状况包括晴朗、多云、阴天和雨雪。
  6. 一种图像显示亮度和色温的调整方法，所述方法包括：
    在第一预设时间内，如果自适应图像设置为开启状态且与已连接网络，借助网络实时获取当前城市的天气状况，获取当前环境的光线强度；
    根据所述天气状况和所述光线强度调整图像显示的亮度值和色差值。
  7. 根据权利要求6所述的方法，还包括：
    在第一预设时间内，如果自适应图像设置为开启状态且与未连接网络，获取当前环境的光线强度；
    根据所述光线强度调整图像显示的亮度值和色差值。
  8. 根据权利要求6所述的方法，还包括：
    在非第一预设时间内，控制所述自适应图像设置为关闭状态且用户无法开启所述自适应图像设置，控制图像显示的亮度和色差恢复为默认值。
  9. 根据权利要求6所述的方法，还包括：
    间隔第二预设时间获取当前城市的天气状况；
    间隔第二预设时间获取当前环境的光线强度；
    根据所述天气状况和所述光线强度调整图像显示的亮度值和色差值。
  10. 根据权利要求6所述的方法，所述光线强度包括低级别、适宜级别和高级别，所述天气状况包括晴朗、多云、阴天和雨雪。
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