CN113781957B - Method for preventing screen burn of display device and display device - Google Patents

Method for preventing screen burn of display device and display device Download PDF

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Publication number
CN113781957B
CN113781957B CN202111053596.8A CN202111053596A CN113781957B CN 113781957 B CN113781957 B CN 113781957B CN 202111053596 A CN202111053596 A CN 202111053596A CN 113781957 B CN113781957 B CN 113781957B
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display
equipment
preset time
display device
brightness
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CN113781957A (en
Inventor
陈相涛
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Hisense Visual Technology Co Ltd
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Hisense Visual Technology Co Ltd
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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
    • G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/06—Adjustment of display parameters
    • G09G2320/0626—Adjustment of display parameters for control of overall brightness
    • G09G2320/064—Adjustment of display parameters for control of overall brightness by time modulation of the brightness of the illumination source
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Controls And Circuits For Display Device (AREA)

Abstract

The application provides a method for preventing screen burn of display equipment and the display equipment, which can detect the equipment state change of the display equipment and adjust the display brightness of the display equipment according to the equipment state change condition. If the display device displays still images or pages for a long time without other operations, the display brightness is required to be adjusted from a relatively bright first brightness to a relatively dark second brightness, so that the display device is prevented from displaying still contents with high brightness for a long time, the problem of screen burning of the OLED display screen is prevented, and the service life of the OLED display screen is prolonged.

Description

Method for preventing screen burn of display device and display device
Technical Field
The application relates to the technical field of display, in particular to a method for preventing screen burn of display equipment and the display equipment.
Background
OLED (Organic Light-Emitting Diode) display screen has characteristics such as self-luminous, frivolous, response time is fast. The display equipment using the OLED display screen has high color expression capability, contrast ratio, response speed, visual angle and other core indexes.
However, the material of the OLED display screen itself determines that it cannot be displayed for a long time, and if it is displayed for a long time, a burn-in problem occurs. The so-called burn-in is that after the OLED display continuously emits light for a long time to display a certain still image, the aging speed is increased, the display brightness is reduced, the afterimage of the image is left, the afterimage cannot be eliminated, the afterimage exists all the time, and the watching of a user is further affected. In addition, after the problem of screen burning appears, the service life of the OLED display screen can be greatly shortened.
Disclosure of Invention
The application provides a method for preventing screen burn of display equipment and the display equipment, and aims to solve the problem that screen burn is easily caused by long-time display of still images by the existing display equipment with an OLED display screen.
In a first aspect, the present application provides a method for preventing burn-in of a display device, the method comprising the steps of: determining whether the device state of the display device changes within a first preset time when the display device is at a first brightness; if the state of the equipment changes within the first preset time, controlling the display equipment to be still at the first brightness, and starting to count time again from the moment when the state of the equipment changes; if the state of the equipment is not changed within the first preset time, controlling the display equipment to be at the second brightness; wherein the first luminance is greater than the second luminance.
The method can detect the equipment state change of the display equipment and adjust the display brightness of the display equipment according to the equipment state change condition. If the display device displays still images or pages for a long time without other operations, the display brightness is required to be adjusted from a relatively bright first brightness to a relatively dark second brightness, so that the display device is prevented from displaying still contents with high brightness for a long time, the problem of screen burning of the OLED display screen is prevented, and the service life of the OLED display screen is prolonged.
In some implementations, when the display device is at the second brightness, it may also be determined whether a device state of the display device has changed; if the state of the device changes, controlling the display device to be at the first brightness; if the device state does not change, the display device is controlled to be still at the second brightness.
In some implementations, when the display device is at the second brightness, it may also be determined whether the device state of the displayed device changes within a second preset time; if the state of the equipment changes within the second preset time, controlling the display equipment to be at the first brightness; and if the device state is not changed within the second preset time, controlling the display device to be still at the second brightness, and controlling the display to display a screen saver picture.
It is understood that the above device states include a display state and an execution state of the display device.
In some implementations, when the display device is at the first brightness, whether the display state and the execution state of the display device change within a first preset time can also be detected; if any one of the display state and the execution state changes within the first preset time, determining that the equipment state changes within the first preset time; if the display state and the execution state are unchanged within the first preset time, determining that the equipment state is unchanged within the first preset time.
In some implementations, when the display device is at the first brightness, whether the picture content displayed by the display changes within a first preset time can also be detected; if the picture content changes within the first preset time, determining that the display state changes within the first preset time; and if the picture content is not changed within the first preset time, determining that the display state is not changed within the first preset time.
In some implementations, when the display device is at the first brightness, whether the display device receives a control instruction input by a user within a first preset time can also be detected; if the display equipment receives a control instruction input by a user within the first preset time, determining that the execution state changes within the first preset time; if the display device does not receive the control instruction input by the user within the first preset time, determining that the execution state is not changed within the first preset time.
In some implementations, if the display device receives a control instruction input by a user within a first preset time, the display device is controlled to execute a corresponding action or the display is controlled to display a corresponding page.
In some implementations, when the display device is at the first brightness, it may also be detected whether the display device is connected to an external device within a first preset time; if the display device is connected with the external device within the first preset time, determining that the execution state changes within the first preset time; if the display device is not connected with the external device within the first preset time, determining that the execution state is not changed within the first preset time.
In some implementations, if the display device is connected to the external device within a first preset time, the display is controlled to display a prompt page for connecting to the external device.
In a second aspect, the present application provides a display device, comprising:
a display; a controller coupled to the display, the controller configured to: determining whether the device state of the display device changes within a first preset time when the display device is at a first brightness; if the state of the equipment changes within the first preset time, controlling the display equipment to be still at the first brightness, and starting to count time again from the moment when the state of the equipment changes; if the state of the equipment is not changed within the first preset time, controlling the display equipment to be at the second brightness; wherein the first luminance is greater than the second luminance.
The method for preventing the screen burn of the display device in the first aspect of the present application may be applied to the display device in the second aspect, and further the beneficial effects that can be achieved in the second aspect are the same as those of the first aspect, which are not described herein.
Drawings
In order to more clearly illustrate the technical solutions of the present application, the drawings that are needed in the embodiments will be briefly described below, and it will be obvious to those skilled in the art that other drawings can be obtained from these drawings without inventive effort.
FIG. 1 illustrates a schematic diagram of an operational scenario between a display device and a control apparatus 100 according to some embodiments;
fig. 2 shows a hardware configuration block diagram of the control apparatus 100 according to some embodiments;
fig. 3 illustrates a hardware configuration block diagram of a display device 200 according to some embodiments;
FIG. 4 illustrates a software configuration diagram in a display device 200 according to some embodiments;
FIG. 5 illustrates a method flow diagram for preventing burn-in of a display device, according to some embodiments;
fig. 6 shows a schematic diagram of still images while pausing playing video on a display device 200 according to some embodiments;
Fig. 7 shows a schematic diagram of a display of still images on a display device 200 according to some embodiments;
fig. 8 shows another schematic diagram of a display of still images on a display device 200 according to some embodiments;
FIG. 9 illustrates a schematic diagram of a video on a display device 200 that is paused for continued playback in accordance with some embodiments;
fig. 10 shows a schematic diagram of a person image displayed first and then an animal image displayed on a display device 200 according to some embodiments;
FIG. 11 shows a schematic diagram of a detection hint page displayed on display device 200 according to some embodiments;
FIG. 12 illustrates a flow diagram of brightness adjustment after the display device 200 is at a second brightness, in accordance with some embodiments;
FIG. 13 illustrates another flow diagram of brightness adjustment after the display device 200 is at a second brightness in accordance with some embodiments;
fig. 14 shows a schematic diagram of a pairing request page displayed on the display device 200 according to some embodiments.
Detailed Description
For purposes of clarity and implementation of the present application, the following description will make clear and complete descriptions of exemplary implementations of the present application with reference to the accompanying drawings in which exemplary implementations of the present application are illustrated, it being apparent that the exemplary implementations described are only some, but not all, of the examples of the present application.
It should be noted that the brief description of the terms in the present application is only for convenience in understanding the embodiments described below, and is not intended to limit the embodiments of the present application. Unless otherwise indicated, these terms should be construed in their ordinary and customary meaning.
The terms "first," second, "" third and the like in the description and in the claims and in the above-described figures are used for distinguishing between similar or similar objects or entities and not necessarily for limiting a particular order or sequence, unless otherwise indicated. It is to be understood that the terms so used are interchangeable under appropriate circumstances.
The terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a product or apparatus that comprises a list of elements is not necessarily limited to all elements explicitly listed, but may include other elements not expressly listed or inherent to such product or apparatus.
The term "module" refers to any known or later developed hardware, software, firmware, artificial intelligence, fuzzy logic, or combination of hardware or/and software code that is capable of performing the function associated with that element.
Fig. 1 illustrates a schematic diagram of an operational scenario between a display device and a control apparatus 100 according to some embodiments. As shown in fig. 1, a user may operate the display device 200 through the smart device 300 or 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 infrared protocol communication or bluetooth protocol communication, and other short-range communication modes, and the display device 200 is controlled by a wireless or wired mode. The user may control the display device 200 by inputting user instructions through keys on a remote control, voice input, control panel input, etc.
In some embodiments, a smart device 300 (e.g., mobile terminal, tablet, computer, notebook, etc.) may also be used to control the display device 200. For example, the display device 200 is controlled using an application running on a smart device.
In some embodiments, the display device 200 may also perform control in a manner other than the control apparatus 100 and the smart device 300, for example, the voice command control of the user may be directly received through a module configured inside the display device 200 device for acquiring voice commands, or the voice command control of the user may be received through a voice control device configured outside the display device 200 device.
In some embodiments, the display device 200 is also in data communication with a server 400. The display device 200 may be permitted to make communication connections via 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 device 200. The server 400 may be a cluster, or may be multiple clusters, and may include one or more types of servers.
Fig. 2 shows a hardware configuration block diagram of the control apparatus 100 according to some embodiments. As shown in fig. 2, 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 apparatus 100 may receive an input operation instruction of a user and convert the operation instruction into an instruction recognizable and responsive to the display device 200, and function as an interaction between the user and the display device 200.
Fig. 3 illustrates a hardware configuration block diagram of a display device 200 according to some embodiments.
In some embodiments, display apparatus 200 includes at least one of a modem 210, a communicator 220, a detector 230, an external device interface 240, a controller 250, a display 260, an audio output interface 270, memory, a power supply, a user interface.
In some embodiments, the controller includes a processor, a video processor, an audio processor, a graphics processor, RAM, ROM, a first interface for input/output to an nth interface.
In some embodiments, the display 260 includes a display screen component for presenting a picture, and a driving component for driving an image display, for receiving image signals from the controller output, for displaying video content, image content, and a menu manipulation interface, and for manipulating a UI interface by a user.
In some embodiments, the display 260 may be a liquid crystal display, an OLED display, a projection device, and a projection screen.
In some embodiments, communicator 220 is a component for communicating with external devices or servers according to various communication protocol types. For example: the communicator may include at least one of a Wifi module, a bluetooth module, a wired ethernet module, or other network communication protocol chip or a near field communication protocol chip, and an infrared receiver. The display device 200 may establish transmission and reception of control signals and data signals with the external control device 100 or the server 400 through the communicator 220.
In some embodiments, the user interface may be configured to receive control signals from the control device 100 (e.g., an infrared remote control, etc.).
In some embodiments, the detector 230 is used to collect signals of the external environment or interaction with the outside. For example, detector 230 includes a light receiver, a sensor for capturing the intensity of ambient light; alternatively, the detector 230 includes an image collector such as a camera, which may be used to collect external environmental scenes, user attributes, or user interaction gestures, or alternatively, the detector 230 includes a sound collector such as a microphone, or the like, which is used to receive external sounds.
In some embodiments, 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), RGB port, etc. The input/output interface may be a composite input/output interface formed by a plurality of interfaces.
In some embodiments, the modem 210 receives broadcast television signals via wired or wireless reception and demodulates audio-video signals, such as EPG data signals, from a plurality of wireless or wired broadcast television signals.
In some embodiments, the controller 250 and the modem 210 may be located in separate devices, i.e., the modem 210 may also be located in an external device to the main device in which the controller 250 is located, such as an external set-top box or the like.
In some embodiments, the controller 250 controls the operation of the display device and responds to user operations through various software control programs stored on the memory. The controller 250 controls the overall operation of the display apparatus 200. For example: in response to receiving a user command to select a UI object to be displayed on the display 260, 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, an icon, or other operable control. The operations related to the selected object are: displaying an operation of connecting to a hyperlink page, a document, an image, or the like, or executing an operation of a program corresponding to the icon.
In some embodiments, the controller includes at least one of 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), a first interface to an nth interface for input/output, a communication Bus (Bus), and the like.
And the CPU processor is used for executing the operating system and application program instructions stored in the memory and executing various application programs, data and contents according to various interaction instructions received from the outside so as to finally display and play various audio and video contents. The CPU processor may include a plurality of processors. Such as one main processor and one or more sub-processors.
In some embodiments, a graphics processor is used to generate various graphical objects, such as: icons, operation menus, user input instruction display graphics, and the like. The graphic processor comprises an arithmetic unit, which is used for receiving various interactive instructions input by a user to operate and displaying various objects according to display attributes; the device also 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 is configured to receive an external video signal, perform video processing such as decompression, decoding, scaling, noise reduction, frame rate conversion, resolution conversion, image composition, etc., according to a standard codec protocol of an input signal, and may obtain a signal that is displayed or played on the directly displayable device 200.
In some embodiments, the video processor 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 the video decoding module is used for processing the demultiplexed video signal, including decoding, scaling and the like. And an image synthesis module, such as an image synthesizer, for performing superposition mixing processing on the graphic generator and the video image after the scaling processing according to the GUI signal input by the user or generated by the graphic generator, so as to generate an image signal for display. And the frame rate conversion module is used for converting the frame rate of the input video. And the display formatting module is used for converting the received frame rate into a video output signal and changing the video output signal to be in accordance with a display format, such as outputting RGB data signals.
In some embodiments, the audio processor is configured to receive an external audio signal, decompress and decode the audio signal according to a standard codec protocol of an input signal, and perform noise reduction, digital-to-analog conversion, and amplification processing to obtain a sound signal that can be played in a speaker.
In some embodiments, a user may input a user command through a Graphical User Interface (GUI) displayed on the display 260, and the user input interface receives the user input command 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 recognizes the sound or gesture through the sensor to receive the user input command.
In some embodiments, a "user interface" is a media interface for interaction and exchange of information between an application or operating system and a user that enables conversion between an internal form of information and a form acceptable to the user. A commonly used presentation form of the user interface is a graphical user interface (Graphic User Interface, GUI), which refers to a user interface related to computer operations that is displayed in a graphical manner. It may be an interface element such as an icon, a window, a control, etc. displayed in a 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.
In some embodiments, a system of display devices may include a Kernel (Kernel), a command parser (shell), a file system, and an application program. The kernel, shell, and file system together form the basic operating system architecture that allows users to manage files, run programs, and use the system. After power-up, the kernel is started, the kernel space is activated, hardware is abstracted, hardware parameters are initialized, virtual memory, a scheduler, signal and inter-process communication (IPC) are operated and maintained. After the kernel is started, shell and user application programs are loaded again. The application program is compiled into machine code after being started to form a process.
Referring to FIG. 4, in some embodiments, the system is divided into four layers, from top to bottom, an application layer (referred to as an "application layer"), an application framework layer (Application Framework layer) (referred to as a "framework layer"), a An Zhuoyun row (Android run) and a system library layer (referred to as a "system runtime layer"), and a kernel layer, respectively.
In some embodiments, at least one application program is running in the application program layer, and these application programs may be a Window (Window) program of an operating system, a system setting program, a clock program, or the like; or may be an application developed by a third party developer. In particular implementations, the application packages in the application layer are not limited to the above examples.
The framework layer provides an application programming interface (application programming interface, API) and programming framework for the application. The application framework layer includes a number of predefined functions. The application framework layer corresponds to a processing center that decides to let the applications in the application layer act. Through the API interface, the application program can access the resources in the system and acquire the services of the system in the execution.
As shown in fig. 4, the application framework layer in the embodiment of the present application includes a manager (manager), a Provider or 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 to interact with all activities that are running in the system; a Location Manager (Location Manager) is used to provide system services or applications with access to system Location services; a Package Manager (Package Manager) for retrieving various information about an application Package currently installed on the device; a notification manager (Notification Manager) for controlling the display and clearing of notification messages; a Window Manager (Window Manager) is used to manage bracketing icons, windows, toolbars, wallpaper, and desktop components on the user interface.
In some embodiments, the activity manager is used to manage the lifecycle of the individual applications as well as the usual navigation rollback functions, such as controlling the exit, opening, fallback, etc. of the applications. The window manager is used for managing all window programs, such as obtaining the size of the display screen, judging whether a status bar exists or not, locking the screen, intercepting the screen, controlling the change of the display window (for example, reducing the display window to display, dithering display, distorting display, etc.), etc.
In some embodiments, the system runtime layer provides support for the upper layer, the framework layer, and when the framework layer is in use, the android operating system runs the C/C++ libraries contained 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 kernel layer contains at least one of the following drivers: audio drive, display drive, bluetooth drive, camera drive, WIFI drive, USB drive, HDMI drive, sensor drive (e.g., fingerprint sensor, temperature sensor, pressure sensor, etc.), and power supply drive, etc.
OLED (Organic Light-Emitting Diode) display screen has characteristics such as self-luminous, frivolous, response time is fast. The display device 200 using the OLED display screen has high color representation capability, contrast ratio, response speed, viewing angle, and other core indexes.
However, the material of the OLED display screen itself determines that it cannot be displayed for a long time, and if it is displayed for a long time, a burn-in problem occurs. The burn-in refers to that after the OLED display screen continuously emits light for a long time to display a certain still image, the aging speed is increased, the display brightness is reduced, the image is left, the image is not eliminated, and the image is always present, so that the watching of a user is affected. In addition, after the problem of screen burning appears, the service life of the OLED display screen can be greatly shortened.
The display device 200 with an OLED display screen in the embodiment of the present application has a device state such as a display state and an execution state. The display state refers to a state in which the display device 200 displays content, and the display content may include video, images, pictures, or functional pages provided by the display device 200 itself, or the like. The execution state refers to a state in which the display device 200 actively or passively performs an action. The display device 200 may passively perform an action according to a user's operation, for example, the user presses a key of a remote controller, and the display device 200 may perform a corresponding action or display a corresponding page after receiving a key message. The display device 200 may also actively perform actions by actively detecting messages sent by other devices, for example, if the display device 200 detects a connection request sent by some external device, the display device 200 may actively display a connection prompt page, etc.
In connection with the above, it is understood that the display device 200 always displays a still image, and it may mean that the content displayed on the display device 200 is unchanged and the display device 200 does not perform other actions. At this time, it can be regarded that the device state of the display device 200 has not changed. The above-described problem of the OLED display screen burning easily occurs when the device state of the display device 200 is always unchanged. To solve this problem, the present embodiment provides a method of preventing the display device 200 from burning, which may be applied to the display device 200 having the OLED display screen, and specifically performed by the controller 250 in the display device 200.
For convenience of explanation in the embodiments, the display devices 200 in the following embodiments each refer to a display device 200 having an OLED display screen.
As shown in fig. 5, the method for preventing the screen burn of the display device may specifically include the following steps:
in step S101, when the display apparatus 200 is at the first brightness, it is determined whether the apparatus state of the display apparatus 200 is changed within the first preset time.
In this embodiment, the display device 200 is set to the first brightness, which includes at least two cases.
The first case is that after the display apparatus 200 is turned on, the display apparatus 200 needs to be displayed with a relatively bright brightness, i.e., a first brightness. So that the user operates the display device 200 after it is powered on. For example, after the display device 200 is turned on, the user may control the display device 200 to display corresponding content by clicking a certain function control, or the user may connect an external device to the display device 200 after the display device 200 is turned on.
The second case is that the display apparatus 200 needs to be displayed at the first brightness in order to facilitate the operation of the user and to provide the display content to the user during the normal operation of the display apparatus 200. For example, the display apparatus 200 needs to be at the first brightness during the operation of the display apparatus 200 by the user; alternatively, the display device 200 may be at the first brightness when the display device 200 is playing video content for the user.
As described in the foregoing embodiments, if a user leaves the display apparatus 200 for a while in the process of using the display apparatus 200 in a sudden event requiring processing, the user may pause the video content to leave again if the display apparatus 200 is playing dynamic video content, and the paused still image may be as shown in fig. 6. Alternatively, if the display device 200 displays only one still image, such as that shown in fig. 7, the user may leave directly. In any way, the user cannot operate the display device 200 any more after leaving, and the display device 200 also always displays the content displayed when the user leaves.
In order to avoid the burn-in problem caused by the display device 200 displaying a certain still image for a long time and no other action, in the embodiment of the present application, the first preset time may be set to determine whether the brightness of the display device 200 needs to be dimmed, i.e. adjusted to the second brightness.
In this embodiment, a timing device such as a timer may be set in the display device 200, and the timing may be started while the display device 200 is turned on. The first preset time may be a period of time after starting the timer.
As described in the foregoing, the device states of the display device 200 include a display state and an execution state. Only when neither the display state nor the execution state changes, it can be determined that the device state does not change. Therefore, in step S101, when the display apparatus 200 is at the first brightness, it is also detected whether the display state and the execution state change within the first preset time.
If either or both of the display state and the execution state change within a first preset time, determining that the device state changes within the first preset time, e.g., only the display state changes and the execution state does not change within the first preset time, determining that the device state changes; or, in the first preset time, only the execution state changes, but the display state does not change, and the equipment state is determined to change; or, in the first preset time, the display state and the execution state are changed, and the equipment state is determined to be changed.
And if the display state and the execution state are not changed within the first preset time, determining that the equipment state is not changed within the first preset time.
In step S101, when the display apparatus 200 is at the first brightness and it is required to determine whether the display state is changed, it may be first detected that the screen content displayed by the display 260 is changed within the first preset time. The screen content displayed on the display device 200 may be a still image, a dynamic video, or a function page, a setting page, or the like provided by the display device 200 itself.
Taking the still image shown in fig. 7 as an example of the screen content, if the display device 200 always displays the still image in fig. 7 for the first preset time, it may be determined that the screen content of the display device 200 has not changed for the first preset time, and thus it may be determined that the display state of the display device 200 has not changed.
And if the display apparatus 200 displays different still images, respectively, within the first preset time, it may be determined that the picture content of the display apparatus 200 has changed within the first preset time, and thus it may be determined that the display state of the display apparatus 200 has changed. For example, when the display apparatus 200 starts counting at the first preset time, the still image shown in fig. 7 is displayed, and another still image shown in fig. 8 is displayed at a certain time within the first preset time, it may be determined that the display state of the display apparatus 200 has changed within the first preset time.
Taking the example of the video image shown in fig. 6 as the picture content, if the user selects pause while watching the video, the display device 200 will also display a still video image, and if the display device 200 is paused for the first preset time, the still image will not change, so that it can be determined that the display state of the display device 200 does not change in the first preset time. If the user selects to continue playing the video within the first preset time, the still video image on the display device 200 will continue to display the next frame, as shown in fig. 9, and at this time, it may be determined that the display state of the display device 200 has changed within the first preset time.
In step S101, when the display apparatus 200 is at the first brightness and it is necessary to determine whether the execution state is changed, it may be first detected whether the display apparatus 200 receives a control instruction input by the user within the first preset time. The control instruction here includes, but is not limited to, a key instruction input by a user through a remote controller, a voice instruction input by a user through input voice content, and the like.
Taking the example that the user inputs a key instruction to the display device 200 through the remote controller, the key instruction is a control instruction. If the display device 200 receives the key instruction within the first preset time, determining that the execution state of the display device 200 is changed within the first preset time; if the display apparatus 200 does not receive the key instruction within the first preset time, it is determined that the execution state of the display apparatus 200 is not changed within the first preset time.
Taking the example that the user inputs voice commands to the display device 200 by inputting voice contents, the voice commands are control commands. If the display device 200 receives the voice command within the first preset time, determining that the execution state of the display device 200 is changed within the first preset time; if the display apparatus 200 does not receive the voice command within the first preset time, it is determined that the execution state of the display apparatus 200 is not changed within the first preset time.
In addition, the display device 200 may also be connected to external devices, such as a bluetooth speaker, a bluetooth remote controller, a usb disk, and the like. When the display device 200 is connected to an external device, the display device 200 detects that there is a device access, and also changes the execution state, so that the user can use the external device conveniently. Therefore, in step S101, when the display apparatus 200 is at the first brightness and it is necessary to determine whether the execution state is changed, it may be first detected whether the display apparatus 200 is connected to an external apparatus within the first preset time.
Taking the example that the display device 200 is connected with a bluetooth speaker and other devices, if the display device 200 is connected with the bluetooth speaker within a first preset time, determining that the execution state of the display device 200 is changed within the first preset time; if the display device 200 is not connected with the bluetooth speaker within the first preset time, it is determined that the execution state of the display device 200 is not changed within the first preset time.
Taking an example that the display device 200 is inserted into a device such as a usb disk by a user, if the display device 200 is manually connected to an external device such as the usb disk by the user within a first preset time, it is determined that an execution state of the display device 200 is changed within the first preset time; if the display apparatus 200 is not manually connected to an external apparatus such as a usb disk by a user within the first preset time, it is determined that the execution state of the display apparatus 200 is not changed within the first preset time.
Either or both of the display state and the execution state are changed within the first preset time, it may be determined that the device state of the display device 200 is changed within the first preset time.
In step S102, if the device state of the display device 200 changes within the first preset time, the display device 200 is controlled to be still at the first brightness, and the re-timing is started from the time when the device state changes.
The device state changes within the first preset time, indicating that the user may continue to use the display device 200. In order to provide a better display effect to the user, it is necessary to still control the display device 200 to be at a brighter luminance, i.e. the first luminance. However, the time needs to be recalculated in order to restart the calculation of the next first preset time. In the next first preset time, it is necessary to continuously determine whether the device state of the display device 200 has changed.
For example, the display apparatus 200 displays a character image while starting the timer and displays it at a first brightness, and the display apparatus 200 displays an animal image again for a first preset time, as shown in fig. 10. Then, in step S102, it may be determined that the display state of the display apparatus 200 has changed within the first preset time, and thus the display apparatus 200 may display the animal image still with the first brightness, and restart timing while starting to display the animal image, and start calculating the next first preset time.
For another example, the display device 200 displays a character image while starting timing and displays the character image with a first brightness, and in a first preset time, since the user inserts the usb device on the display device 200, the display device 200 performs an action of detecting the usb device. Then in step S102, it may be determined that the execution state of the display apparatus 200 has changed within the first preset time, and thus the display apparatus 200 may display the current content on the display apparatus 200 still at the first brightness.
It should be noted that, when the display device 200 is inserted into an external device such as a usb disk by a user, the content displayed on the display device 200 may still be the original content in the process of detecting the usb disk by the display device 200, but a detection prompt page may also be displayed on the display page of the original content, so as to remind the user that the external device is currently being detected. For example, when displaying a person image as shown in fig. 10, the display device 200 may display a detection prompt page, such as shown in fig. 11, on top of the person image.
In step S103, if the device status does not change within the first preset time, the display device 200 is controlled to be at the second brightness.
As can be seen from the foregoing, the display apparatus 200 has a problem of burn-in when a still image is displayed with high brightness for a long time. Therefore, in step S103, if it is detected that the device state of the display device 200 does not change for the first preset time, the display brightness of the display device 200 needs to be dimmed, so that the display device 200 is prevented from being always displayed with high brightness, and the problem of burn-in is avoided.
After step S103, when the display apparatus 200 is at the second brightness, it may also be continued to determine whether the apparatus state of the display apparatus 200 has changed. As shown in fig. 12, in step S201, if the device state changes, indicating that the user starts to continue using the display device 200, the display brightness of the display device 200 may be controlled to be turned high so as to be at the first brightness again. And in step S202, if the device status has not changed, the current display brightness of the display device 200 is continuously maintained so as to be still at the second brightness.
In some embodiments, the display device 200 itself may also be provided with a screen saver function, i.e., if the device state of the display device 200 does not change for a period of time, the display device 200 will display a screen saver screen. Accordingly, after the above step S103, a second preset time may also be set to determine whether the display apparatus 200 needs to display a screen saver screen while at the second brightness. In this way, it is possible to ensure that the display device 200 displays a screen saver image, and also that the display brightness of the display device 200 is relatively dark.
The second preset time may refer to a period of time counted from when the display apparatus 200 is at the second brightness. As shown in fig. 13, in step S301, if the device state of the display device 200 changes within the second preset time, which indicates that the user may continue to use the display device 200, the display brightness of the display device 200 may be turned on, thereby controlling the display device 200 to be at the first brightness; in step S302, if the device state of the display device 200 does not change within the second preset time, the display 260 may be controlled to display a screen saver, where the display device 200 is still in the second brightness and the brightness is not turned high because the display device 200 is still in a state where the user is not using, etc.
In this embodiment of the present application, the first preset time and the second preset time may be set differently according to the actual application situation of the display device 200 or the requirement situation of the user. The first preset time and the second preset time may be preset to unchangeable time values before shipment of the display apparatus 200; a number of time values may also be preconfigured on the display device 200 so that the user may choose at will when using the display device 200.
After step S103, if the display device 200 receives a pairing request or a connection request or the like actively transmitted by another bluetooth device, it may also be regarded that the display device 200 has received a control instruction, in which case the display device 200 may be controlled to be at the first brightness, and the display device 200 may further continue to perform a corresponding action or display a corresponding page or the like on the display 260 in response to the control instruction.
For example, the external bluetooth headset actively scans to the display device 200 and transmits a pairing request to the display device 200, and then the display device 200 needs to display with a first brightness and display a pairing request page after receiving the pairing request, as shown in fig. 14.
Or, after the external bluetooth headset actively scans the display device 200 and detects that the bluetooth headset has been paired with the display device 200, the bluetooth headset may directly send a connection request to the display device 200, and after the display device 200 receives the connection request, the bluetooth headset needs to display with a first brightness and perform a connection action with the bluetooth headset.
As can be seen from the above, the method for preventing the screen burn-in of the display device according to the embodiment of the present application may be applied to the display device 200 and executed by the controller 250. The method detects a device state change of the display device 200 itself and adjusts the display brightness of the display device 200 according to the device state change. If the display device displays still images or pages, etc., for a long time without other operations, it is necessary to adjust the display brightness from a relatively bright first brightness to a relatively dark second brightness, thereby avoiding the display device 200 to display still contents with high brightness for a long time, preventing the problem of burn-in of the OLED display screen, and extending the life of the OLED display screen.
In addition, in the display device 200 of the embodiment of the present application, a monitoring module, a status module, a timer module, a status processing module, a brightness processing module, and the like may also be specifically provided. The monitoring module monitors the equipment state of the display equipment 200 in real time after the display equipment 200 is started, and sends the equipment state to the state module; the timer module is used for timing and accumulating a first preset time; when the state of the equipment changes within the first preset time, the state processing module controls the timer module to restart timing and to accumulate the first preset time again; the brightness processing module decides whether to adjust the current brightness of the display device 200 according to the device status and the current brightness of the display device 200.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution 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 scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the corresponding technical solutions 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 (9)

1. A display device, characterized by comprising:
a display;
a controller coupled to the display, the controller configured to:
when the display equipment is at first brightness, determining whether the equipment state of the display equipment changes within a first preset time;
if the equipment state changes within the first preset time, controlling the display equipment to be still at the first brightness, and starting to recime from the moment of the equipment state change, wherein the equipment state change comprises the step of receiving a pairing request or a connection request actively sent by other Bluetooth equipment;
If the equipment state is not changed within the first preset time, controlling the display equipment to be at a second brightness; the first brightness is greater than the second brightness;
determining whether a device state of the display device changes when the display device is at a second brightness;
if the device state changes, controlling the display device at a first brightness includes:
receiving pairing requests or connection requests actively sent by other Bluetooth devices, controlling the display device to display a pairing request page, and displaying the pairing request page with first brightness;
receiving a pairing request or a connection request actively sent by other Bluetooth equipment, and when detecting that the other Bluetooth equipment is paired with a display equipment, directly sending the connection request to the display equipment by the other Bluetooth equipment, and controlling the display equipment to display with a first brightness;
and if the device state is not changed, controlling the display device to be still at the second brightness.
2. The display device of claim 1, wherein the controller is further configured to:
determining whether the device state of the display device changes within a second preset time when the display device is at a second brightness;
If the equipment state changes within the second preset time, controlling the display equipment to be at first brightness;
and if the equipment state is not changed within the second preset time, controlling the display equipment to be still at the second brightness, and controlling a display to display a screen saver picture.
3. The display device of claim 1, wherein the controller is further configured to:
detecting whether the display state and the execution state of the display device change within a first preset time when the display device is at a first brightness;
if any one of the display state and the execution state changes within the first preset time, determining that the equipment state changes within the first preset time;
and if the display state and the execution state are not changed within the first preset time, determining that the equipment state is not changed within the first preset time.
4. The display device of claim 3, wherein the controller is further configured to:
detecting whether the picture content displayed by a display changes within a first preset time when the display equipment is at a first brightness;
If the picture content changes within the first preset time, determining that the display state changes within the first preset time;
and if the picture content is not changed within the first preset time, determining that the display state is not changed within the first preset time.
5. The display device of claim 3, wherein the controller is further configured to:
detecting whether the display equipment receives a control instruction input by a user in a first preset time when the display equipment is at first brightness;
if the display equipment receives a control instruction input by a user within the first preset time, determining that the execution state changes within the first preset time;
and if the display equipment does not receive the control instruction input by the user within the first preset time, determining that the execution state is not changed within the first preset time.
6. The display device of claim 5, wherein the controller is further configured to:
and if the display equipment receives the control instruction input by the user within the first preset time, controlling the display equipment to execute corresponding actions or controlling the display to display corresponding pages.
7. The display device of claim 3, wherein the controller is further configured to:
detecting whether the display equipment is connected with external equipment within a first preset time when the display equipment is at first brightness;
if the display device is connected with an external device within the first preset time, determining that the execution state changes within the first preset time;
and if the display equipment is not connected with external equipment within the first preset time, determining that the execution state is not changed within the first preset time.
8. The display device of claim 7, wherein the controller is further configured to:
and if the display equipment is connected with the external equipment within the first preset time, controlling a display to display a prompt page connected with the external equipment.
9. A method for preventing burn-in of a display device, comprising:
when the display equipment is at first brightness, determining whether the equipment state of the display equipment changes within a first preset time;
if the equipment state changes within the first preset time, controlling the display equipment to be still at the first brightness, and starting to recime from the moment of the equipment state change, wherein the equipment state change comprises the step of receiving a pairing request or a connection request actively sent by other Bluetooth equipment;
If the equipment state is not changed within the first preset time, controlling the display equipment to be at a second brightness; the first brightness is greater than the second brightness;
determining whether a device state of the display device changes when the display device is at a second brightness;
if the device state changes, controlling the display device at a first brightness includes:
receiving a pairing request or a connection request actively sent by other Bluetooth equipment, and when detecting that the other Bluetooth equipment is paired with a display equipment, directly sending the connection request to the display equipment by the other Bluetooth equipment, and controlling the display equipment to display with a first brightness;
when a pairing request or a connection request actively sent by other Bluetooth equipment is received and the fact that the other Bluetooth equipment is not paired with display equipment is detected, the display equipment is controlled to display a pairing request page and display the pairing request page with first brightness;
and if the device state is not changed, controlling the display device to be still at the second brightness.
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