阅读说明：本技术 一种显示设备开启屏幕保护的方法及显示设备 (Method for starting screen protection of display equipment and display equipment ) 是由 曹圆圆 于 2020-03-26 设计创作，主要内容包括：本发明实施例涉及显示技术领域,尤其涉及一种显示设备开启屏幕保护的方法及显示设备,获取在显示器上将要显示的待显示图像对应的多个分区图像,根据各所述分区图像中各像素的灰度值,确定各所述分区图像的亮度信息；针对各所述分区图像,当确定预设比例的分区图像的亮度信息未发生变化的时长超过预设时长时,控制显示器显示屏幕保护。本申请实施例中,利用屏幕保护可以避免出现显示界面长时间亮度信息未发生变化而造成的烧屏现象,延长了显示器的使用寿命。(The embodiment of the invention relates to the technical field of display, in particular to a method for starting screen protection of display equipment and the display equipment, wherein a plurality of subarea images corresponding to an image to be displayed on a display are obtained, and the brightness information of each subarea image is determined according to the gray value of each pixel in each subarea image; and for each subarea image, controlling a display to display screen protection when the duration that the brightness information of the subarea images with the preset proportion is unchanged exceeds the preset duration. In the embodiment of the application, the screen burning phenomenon caused by the fact that the brightness information of the display interface is not changed for a long time can be avoided by utilizing the screen protection, and the service life of the display is prolonged.)

1. A display device, comprising:

a display;

the user interface is used for receiving instructions input by a user;

a controller for performing:

acquiring a plurality of subarea images corresponding to an image to be displayed on a display, and determining the brightness information of each subarea image according to the gray value of each pixel in each subarea image;

and for each subarea image, controlling a display to display screen protection when the duration that the brightness information of the subarea images with the preset proportion is unchanged exceeds the preset duration.

2. The display device of claim 1, wherein the display is controlled to exit the screen saver when the user input is detected.

3. The display device of claim 1, wherein the screen saver is configured to automatically play a group of pictures or videos for a certain duration.

4. The display device according to claim 1, wherein the preset proportion is 90% to 95%.

5. The display device according to claim 1, wherein the luminance information of the divisional image is obtained by: the average gray-scale value of all pixels in the subarea image, or the maximum gray-scale value of all pixels, or the root mean square of all pixel gray-scale values.

6. A method for opening a screen saver of a display device is characterized by comprising the following steps:

acquiring a plurality of subarea images corresponding to an image to be displayed on a display, and determining the brightness information of each subarea image according to the gray value of each pixel in each subarea image;

and for each subarea image, controlling a display to display screen protection when the duration that the brightness information of the subarea images with the preset proportion is unchanged exceeds the preset duration.

7. The method of claim 6, wherein the display is controlled to exit the screen saver when the user input is detected.

8. The method according to claim 6, characterized in that said preset proportion is 90% -95%.

9. The method of claim 6, wherein the screen saver is configured to automatically play a group of pictures or videos for a certain duration.

10. The method of claim 6, wherein the luminance information of the segmented image is obtained by: the average gray-scale value of all pixels in the subarea image, or the maximum gray-scale value of all pixels, or the root mean square of all pixel gray-scale values.

Technical Field

The invention relates to the technical field of display, in particular to a method for starting screen protection of display equipment and the display equipment.

Background

The O L ED display technology has the advantages of self-luminescence, wide viewing angle, almost infinite contrast, low power consumption, extremely high response speed and the like, in recent years, various manufacturers at home and abroad continuously provide high-end televisions with O L ED screens, and although the O L ED has the advantages, the O L ED has the fatal defect of screen burning.

The phenomenon of 'afterimage' can occur in a display of a self-luminous type, no matter a picture tube, plasma or O L ED, when an image is unchanged for a long time and the contrast of the picture is strong, a part of original bright parts can be shaded and remained in the picture after the picture is switched, which is caused by the display technology limitation of O L ED, because the luminous efficiencies of blue-red-green three-color light sources are inconsistent, blue pixels are easy to decline, red pixels are second, and green pixels are difficult to decline.

Disclosure of Invention

The application provides a method for starting a screen saver of a display device and the display device, so as to avoid permanent damage to an O L ED display.

In a first aspect, there is provided a display device comprising:

a display;

the user interface is used for receiving instructions input by a user;

a controller for performing:

acquiring a plurality of subarea images corresponding to an image to be displayed on a display, and determining the brightness information of each subarea image according to the gray value of each pixel in each subarea image;

and for each subarea image, controlling a display to display screen protection when the duration that the brightness information of the subarea images with the preset proportion is unchanged exceeds the preset duration.

Further, when the user input is detected, the display is controlled to exit the screen saver.

Further, the screen saver is to automatically play a group of pictures or videos according to a certain time length.

Further, the preset proportion is 90% -95%.

Further, the luminance information of the divisional image is obtained by: the average gray-scale value of all pixels in the subarea image, or the maximum gray-scale value of all pixels, or the root mean square of all pixel gray-scale values.

In a second aspect, a method for a display device to open a screen saver is provided, which includes:

acquiring a plurality of subarea images corresponding to an image to be displayed on a display, and determining the brightness information of each subarea image according to the gray value of each pixel in each subarea image;

and for each subarea image, controlling a display to display screen protection when the duration that the brightness information of the subarea images with the preset proportion is unchanged exceeds the preset duration.

Further, when the user input is detected, the display is controlled to exit the screen saver.

Further, the preset proportion is 90% -95%.

Further, the screen saver is to automatically play a group of pictures or videos according to a certain time length.

Further, the luminance information of the divisional image is obtained by: average gray-scale value of all pixels in the subarea image, or maximum gray-scale value of all pixels, or root-mean-square of gray-scale values of all pixels

In the above embodiment, the controller is configured to perform: acquiring a plurality of subarea images corresponding to an image to be displayed on a display, and determining the brightness information of each subarea image according to the gray value of each pixel in each subarea image; and for each subarea image, controlling a display to display screen protection when the duration that the brightness information of the subarea images with the preset proportion is unchanged exceeds the preset duration. In the embodiment of the application, the screen burning phenomenon caused by the fact that the brightness information of the display interface is not changed for a long time can be avoided by utilizing the screen protection, and the service life of the display is prolonged.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

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

fig. 1B is a block diagram schematically illustrating a configuration of the control apparatus 100 in fig. 1A;

fig. 1C is a block diagram schematically illustrating a configuration of the display device 200 in fig. 1A;

FIG. 1D is a block diagram illustrating an architectural configuration of an operating system in memory of display device 200;

FIG. 2 is a schematic diagram illustrating an example GUI provided by display device 200;

a schematic diagram of yet another GUI provided by the display device 200 is exemplarily shown in fig. 3;

FIG. 4 is a flow chart illustrating a method of a display device opening a screen saver;

FIG. 5 is a flow chart illustrating yet another method for a display device to open a screen saver;

a flow chart of yet another method for a display device to open a screen saver is illustrated in fig. 6.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The term "user interface" in this application is a media interface for interaction and information exchange between an application or operating system and a user that enables conversion between an internal form of information and a form acceptable to the user. A common presentation form of a user interface is a Graphical User Interface (GUI), which refers to a user interface related to computer operations and displayed in a graphical manner. It may be an interface element such as an icon, a window, a control, etc. displayed in the display screen of the display 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.

Fig. 1A is a schematic diagram illustrating an operation scenario between a display device and a control apparatus. As shown in fig. 1A, the control apparatus 100 and the display device 200 may communicate with each other in a wired or wireless manner.

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

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

The control device 100 may also be an intelligent device, such as a mobile terminal 100B, a tablet computer, a notebook computer, and the like. For example, the display device 200 is controlled using an application program running on the smart device. The application program may provide various controls to a user through an intuitive User Interface (UI) on a screen associated with the smart device through configuration.

For example, the mobile terminal 100B may install a software application with the display device 200 to implement connection communication through a network communication protocol for the purpose of one-to-one control operation and data communication. Such as: the mobile terminal 100B may be caused to establish a control instruction protocol with the display device 200 to implement the functions of the physical keys as arranged in the remote control 100A by operating various function keys or virtual buttons of the user interface provided on the mobile terminal 100B. The audio and video content displayed on the mobile terminal 100B may also be transmitted to the display device 200, so as to implement a synchronous display function.

The display apparatus 200 may provide a network television function of a broadcast receiving function and a computer support function. The display device may be implemented as a digital television, a web television, an Internet Protocol Television (IPTV), or the like.

The display device 200 may be a liquid crystal display, an organic light emitting display, a projection device. The specific display device type, size, resolution, etc. are not limited.

The display device 200 may also be in data communication with the server 300 via a variety of communication means, such as a local area network (L AN), a wireless local area network (W L AN), and other networks, where the server 300 may provide various content and interactions to the display device 200, the display device 200 may send and receive information, such as receiving Electronic Program Guide (EPG) data, receiving software program updates, or accessing a remotely stored digital media library, for example, the server 300 may be a group or groups of servers, one or more types of servers, and other network service content such as video-on-demand and advertising services provided via the server 300.

Fig. 1B is a block diagram illustrating the configuration of the control device 100. As shown in fig. 1B, the control device 100 includes a controller 110, a memory 120, a communicator 130, a user input interface 140, an output interface 150, and a power supply 160.

The controller 110 includes a Random Access Memory (RAM)111, a Read Only Memory (ROM)112, a processor 113, a communication interface, and a communication bus. The controller 110 is used to control the operation of the control device 100, as well as the internal components of the communication cooperation, external and internal data processing functions.

Illustratively, when an interaction of a user pressing a key disposed on the remote controller 100A or an interaction of touching a touch panel disposed on the remote controller 100A is detected, the controller 110 may control to generate a signal corresponding to the detected interaction and transmit the signal to the display device 200.

And a memory 120 for storing various operation programs, data and applications for driving and controlling the control apparatus 100 under the control of the controller 110. The memory 120 may store various control signal commands input by a user.

The communicator 130 enables communication of control signals and data signals with the display apparatus 200 under the control of the controller 110. Such as: the control apparatus 100 transmits a control signal (e.g., a touch signal or a button signal) to the display device 200 via the communicator 130, and the control apparatus 100 may receive the signal transmitted by the display device 200 via the communicator 130. The communicator 130 may include an infrared signal interface 131 and a radio frequency signal interface 132. For example: when the infrared signal interface is used, the user input instruction needs to be converted into an infrared control signal according to an infrared control protocol, and the infrared control signal is sent to the display device 200 through the infrared sending module. The following steps are repeated: when the rf signal interface is used, a user input command needs to be converted into a digital signal, and then the digital signal is modulated according to the rf control signal modulation protocol and then transmitted to the display device 200 through the rf transmitting terminal.

The user input interface 140 may include at least one of a microphone 141, a touch pad 142, a sensor 143, a key 144, and the like, so that a user can input a user instruction regarding controlling the display apparatus 200 to the control apparatus 100 through voice, touch, gesture, press, and the like.

Here, the output interface 150 may include L ED interface 151, vibration interface 152 generating vibration, sound output interface 153 outputting sound, display 154 outputting images, and the like, for example, the remote controller 100A may receive an output signal such as audio, video, or data from the output interface 150, and display the output signal as an image on the display 154, as an audio on the sound output interface 153, or as a vibration on the vibration interface 152.

And a power supply 160 for providing operation power support for each element of the control device 100 under the control of the controller 110. In the form of a battery and associated control circuitry.

A hardware configuration block diagram of the display device 200 is exemplarily illustrated in fig. 1C. As shown in fig. 1C, the display apparatus 200 may include a tuner demodulator 210, a communicator 220, a detector 230, an external device interface 240, a controller 250, a memory 260, a user interface 265, a video processor 270, a display 275, an audio processor 280, an audio output interface 285, and a power supply 290.

The tuner demodulator 210 receives the broadcast television signal in a wired or wireless manner, may perform modulation and demodulation processing such as amplification, mixing, and resonance, and is configured to demodulate, from a plurality of wireless or wired broadcast television signals, an audio/video signal carried in a frequency of a television channel selected by a user, and additional information (e.g., EPG data).

The tuner demodulator 210 is responsive to the user selected frequency of the television channel and the television signal carried by the frequency, as selected by the user and controlled by the controller 250.

The tuner demodulator 210 can receive a television signal in various ways according to the broadcasting system of the television signal, such as: terrestrial broadcasting, cable broadcasting, satellite broadcasting, internet broadcasting, or the like; and according to different modulation types, a digital modulation mode or an analog modulation mode can be adopted; and can demodulate the analog signal and the digital signal according to the different kinds of the received television signals.

In other exemplary embodiments, the tuning demodulator 210 may also be in an external device, such as an external set-top box. In this way, the set-top box outputs a television signal after modulation and demodulation, and inputs the television signal into the display apparatus 200 through the external device interface 240.

The communicator 220 is a component for communicating with an external device or an external server according to various communication protocol types. For example, the display apparatus 200 may transmit content data to an external apparatus connected via the communicator 220, or browse and download content data from an external apparatus connected via the communicator 220. The communicator 220 may include a network communication protocol module or a near field communication protocol module, such as a WIFI module 221, a bluetooth communication protocol module 222, and a wired ethernet communication protocol module 223, so that the communicator 220 may receive a control signal of the control device 100 according to the control of the controller 250 and implement the control signal as a WIFI signal, a bluetooth signal, a radio frequency signal, and the like.

The detector 230 is a component of the display apparatus 200 for collecting signals of an external environment or interaction with the outside. The detector 230 may include a sound collector 231, such as a microphone, which may be used to receive a user's sound, such as a voice signal of a control instruction of the user to control the display device 200; alternatively, ambient sounds may be collected that identify the type of ambient scene, enabling the display device 200 to adapt to ambient noise.

In some other exemplary embodiments, the detector 230, which may further include an image collector 232, such as a camera, a video camera, etc., may be configured to collect external environment scenes to adaptively change the display parameters of the display device 200; and the function of acquiring the attribute of the user or interacting gestures with the user so as to realize the interaction between the display equipment and the user.

In some other exemplary embodiments, the detector 230 may further include a light receiver for collecting the intensity of the ambient light to adapt to the display parameter variation of the display device 200.

In some other exemplary embodiments, the detector 230 may further include a temperature sensor, such as by sensing an ambient temperature, and the display device 200 may adaptively adjust a display color temperature of the image. For example, when the temperature is higher, the display apparatus 200 may be adjusted to display a color temperature of an image that is cooler; when the temperature is lower, the display device 200 may be adjusted to display a warmer color temperature of the image.

The external device interface 240 is a component for providing the controller 250 to control data transmission between the display apparatus 200 and an external apparatus. The external device interface 240 may be connected to an external apparatus such as a set-top box, a game device, a notebook computer, etc. in a wired/wireless manner, and may receive data such as a video signal (e.g., moving image), an audio signal (e.g., music), additional information (e.g., EPG), etc. of the external apparatus.

The external device interface 240 may include: a High Definition Multimedia Interface (HDMI) terminal 241, a Composite Video Blanking Sync (CVBS) terminal 242, an analog or digital Component terminal 243, a Universal Serial Bus (USB) terminal 244, a Component terminal (not shown), a red, green, blue (RGB) terminal (not shown), and the like.

The controller 250 controls the operation of the display device 200 and responds to the operation of the user by running various software control programs (such as an operating system and various application programs) stored on the memory 260. For example, the controller may be implemented as a Chip (SOC).

As shown in fig. 1C, the controller 250 includes a Random Access Memory (RAM)251, a Read Only Memory (ROM)252, a graphics processor 253, a CPU processor 254, a communication interface 255, and a communication bus 256. The RAM251, the ROM252, the graphic processor 253, and the CPU processor 254 are connected to each other through a communication bus 256 through a communication interface 255.

The ROM252 stores various system boot instructions. When the display apparatus 200 starts power-on upon receiving the power-on signal, the CPU processor 254 executes a system boot instruction in the ROM252, copies the operating system stored in the memory 260 to the RAM251, and starts running the boot operating system. After the start of the operating system is completed, the CPU processor 254 copies the various application programs in the memory 260 to the RAM251 and then starts running and starting the various application programs.

And a graphic processor 253 for generating various graphic objects such as icons, operation menus, and user input instruction display graphics, etc. The graphic processor 253 may include an operator for performing an operation by receiving various interactive instructions input by a user, and further displaying various objects according to display attributes; and a renderer for generating various objects based on the operator and displaying the rendered result on the display 275.

A CPU processor 254 for executing operating system and application program instructions stored in memory 260. And according to the received user input instruction, processing of various application programs, data and contents is executed so as to finally display and play various audio-video contents.

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

The communication interface 255 may include a first interface to an nth interface. These interfaces may be network interfaces that are connected to external devices via a network.

The controller 250 may control the overall operation of the display apparatus 200. For example: in response to receiving a user input command for selecting a GUI object displayed on the display 275, the controller 250 may perform an operation related to the object selected by the user input command. For example, the controller may be implemented as an SOC (System on Chip) or an MCU (Micro Control Unit).

Where the object may be any one of the selectable objects, such as a hyperlink or an icon. The operation related to the selected object is, for example, an operation of displaying a link to a hyperlink page, document, image, or the like, or an operation of executing a program corresponding to the object. The user input command for selecting the GUI object may be a command input through various input means (e.g., a mouse, a keyboard, a touch panel, etc.) connected to the display apparatus 200 or a voice command corresponding to a voice spoken by the user.

A memory 260 for storing various types of data, software programs, or applications for driving and controlling the operation of the display device 200. The memory 260 may include volatile and/or nonvolatile memory. And the term "memory" includes the memory 260, the RAM251 and the ROM252 of the controller 250, or a memory card in the display device 200.

In some embodiments, the memory 260 is specifically used for storing an operating program for driving the controller 250 of the display device 200; storing various application programs built in the display apparatus 200 and downloaded by a user from an external apparatus; data such as visual effect images for configuring various GUIs provided by the display 275, various objects related to the GUIs, and selectors for selecting GUI objects are stored.

In some embodiments, memory 260 is specifically configured to store drivers for tuner demodulator 210, communicator 220, detector 230, external device interface 240, video processor 270, display 275, audio processor 280, etc., and related data, such as external data (e.g., audio-visual data) received from the external device interface or user data (e.g., key information, voice information, touch information, etc.) received by the user interface.

In some embodiments, memory 260 specifically stores software and/or programs representing an Operating System (OS), which may include, for example: a kernel, middleware, an Application Programming Interface (API), and/or an application program. Illustratively, the kernel may control or manage system resources, as well as functions implemented by other programs (e.g., the middleware, APIs, or applications); at the same time, the kernel may provide an interface to allow middleware, APIs, or applications to access the controller to enable control or management of system resources.

A block diagram of the architectural configuration of the operating system in the memory of the display device 200 is illustrated in fig. 1D. The operating system architecture comprises an application layer, a middleware layer and a kernel layer from top to bottom.

The application layer may include a plurality of applications, such as a setup application, a post application, a media center application, etc. these applications may be implemented as Web applications that are executed based on a WebKit engine, and in particular may be developed and executed based on HTM L5, Cascading Style Sheets (CSS), and JavaScript.

Here, the HTM L, which is called HyperText Markup language (HyperText Markup L anguage) is a standard Markup language for creating web pages, and describes the web pages by Markup tags, the HTM L tags are used to describe characters, graphics, animation, sound, tables, links, etc., and the browser reads the HTM L document, interprets the contents of the tags in the document, and displays them in the form of web pages.

CSS, known as Cascading Style Sheets (Cascading Style Sheets), is a computer language used to represent the Style of HTM L files, and can be used to define the Style structure, such as the language of font, color, location, etc.

JavaScript, which is a language applied to Web page programming, can be inserted into the HTM L page and interpreted and executed by a browser, wherein the interaction logic of the Web application is realized by the JavaScript, the JavaScript can be used for encapsulating a JavaScript extension interface by the browser to realize the communication with a kernel layer,

for example, the middleware layer may be implemented as multimedia and hypermedia information coding experts group (MHEG) middleware associated with data broadcasting, D L NA middleware that is middleware associated with communication with external devices, middleware that provides a browser environment in which applications run within the display device, and the like.

The kernel layer can be implemented as a kernel based on various operating systems, for example, a kernel based on L inux operating system.

The kernel layer also provides communication between system software and hardware, and provides device driver services for various hardware, such as: provide display driver for the display, provide camera driver for the camera, provide button driver for the remote controller, provide wiFi driver for the WIFI module, provide audio driver for audio output interface, provide power management drive for Power Management (PM) module etc..

A user interface 265 receives various user interactions. Specifically, it is used to transmit an input signal of a user to the controller 250 or transmit an output signal from the controller 250 to the user. For example, the remote controller 100A may transmit an input signal, such as a power switch signal, a channel selection signal, a volume adjustment signal, etc., input by the user to the user interface 265, and then the input signal is transferred to the controller 250 through the user interface 265; alternatively, the remote controller 100A may receive an output signal such as audio, video, or data output from the user interface 265 via the controller 250, and display the received output signal or output the received output signal in audio or vibration form.

In some embodiments, a user may enter user commands on a Graphical User Interface (GUI) displayed on the display 275, and the user interface 265 receives the user input commands through the GUI. Specifically, the user interface 265 may receive user input commands for controlling the position of a selector in the GUI to select different objects or items.

Alternatively, the user may input a user command by inputting a specific sound or gesture, and the user interface 265 receives the user input command by recognizing the sound or gesture through the sensor.

The video processor 270 is configured to receive an external video signal, and perform video data processing such as decompression, decoding, scaling, noise reduction, frame rate conversion, resolution conversion, and image synthesis according to a standard codec protocol of the input signal, so as to obtain a video signal that is directly displayed or played on the display 275.

Illustratively, the video processor 270 includes a demultiplexing module, a video decoding module, an image synthesizing module, a frame rate conversion module, a display formatting module, and the like.

The demultiplexing module is configured to demultiplex an input audio/video data stream, where, for example, an input MPEG-2 stream (based on a compression standard of a digital storage media moving image and voice), the demultiplexing module demultiplexes the input audio/video data stream into a video signal and an audio signal.

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

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

The frame rate conversion module is configured to convert a frame rate of an input video, for example, convert a frame rate of an input 60Hz video into a frame rate of 120Hz or 240Hz, where a common format is implemented by using, for example, an interpolation frame method.

And a display formatting module for converting the signal output by the frame rate conversion module into a signal conforming to a display format of a display, such as converting the format of the signal output by the frame rate conversion module to output an RGB data signal.

A display 275 for receiving the image signal from the video processor 270 and displaying the video content, the image and the menu manipulation interface. The display video content may be from the video content in the broadcast signal received by the tuner-demodulator 210, or from the video content input by the communicator 220 or the external device interface 240. The display 275, while displaying a user manipulation interface UI generated in the display apparatus 200 and used to control the display apparatus 200.

And, the display 275 may include a display screen assembly for presenting a picture and a driving assembly for driving the display of an image. Alternatively, a projection device and projection screen may be included, provided display 275 is a projection display.

The audio processor 280 is configured to receive an external audio signal, decompress and decode the received audio signal according to a standard codec protocol of the input signal, and perform audio data processing such as noise reduction, digital-to-analog conversion, and amplification processing to obtain an audio signal that can be played by the speaker 286.

Illustratively, audio processor 280 may support various audio formats. Such as MPEG-2, MPEG-4, Advanced Audio Coding (AAC), high efficiency AAC (HE-AAC), and the like.

The audio output interface 285 is used for receiving an audio signal output by the audio processor 280 under the control of the controller 250, and the audio output interface 285 may include a speaker 286 or an external sound output terminal 287, such as an earphone output terminal, for outputting to a generating device of an external device.

In other exemplary embodiments, video processor 270 may comprise one or more chips. Audio processor 280 may also comprise one or more chips.

And, in other exemplary embodiments, the video processor 270 and the audio processor 280 may be separate chips or may be integrated with the controller 250 in one or more chips.

And a power supply 290 for supplying power supply support to the display apparatus 200 from the power input from the external power source under the control of the controller 250. The power supply 290 may be a built-in power supply circuit installed inside the display apparatus 200, or may be a power supply installed outside the display apparatus 200.

It should be noted that, when the display device adopts an O L ED display screen, a "burn-in" may occur due to the defect of the O L ED display screen, and in order to avoid the occurrence of the "burn-in" phenomenon, the purpose of prolonging the service life of the display is achieved.

Such as the one shown in fig. 2, the display interface 41 is unchanged for a long time, and the display is controlled to display a screen saver, such as the one shown in fig. 3, which includes the screen saver 42.

When the user needs to make the display device quit the screen saver, an instruction for stopping the display screen saver can be triggered through any key input on the control device, and the display is controlled not to display the screen saver any more. While the display screen displays the display interface before the screen saver appears, for example, when the user inputs an instruction to increase the volume by pressing the volume + key on the control device, the display may be changed from displaying the GUI as shown in fig. 3 to displaying the GUI as shown in fig. 2.

The application provides a method for starting screen protection of display equipment, in the embodiment of the application, image brightness information is processed by a chip driving layer, and a VIDEO layer and an OSD layer (a homepage of UI, Netflix application and the like belong to the OSD layer and an interface of a picture layer picture) can be simultaneously covered, and meanwhile, the method does not depend on the static/playing state of a multimedia player (a local multimedia U disk, various APP application occasions such as Netflix and the like) or a decoder (resources such as TV/HDMI and the like), does not depend on the state of UI, and covers the working condition of the scheme widely.

The method, as shown in fig. 4, includes:

s100, acquiring a plurality of subarea images corresponding to the to-be-displayed image to be displayed on the display.

Taking the example of a 4K display, the user interface includes 3840 × 2160 pixels, which can be divided into 64 (rows) × 36 (columns) divided images, where each divided image is a pixel block of 60 × 60 pixels; it can also be divided into 128 (columns) 72 (rows) of segmented images, where each segmented image is a block of 30 x 30 pixels. In the embodiment of the application, how to divide the display is not limited, and the smaller the area of the partitioned image is, the more accurate the judgment on whether the display interface is unchanged for a long time is.

And S200, determining the brightness information of each subarea image according to the gray value of each pixel in each subarea image.

Specifically, if the acquired pixel data is an RGB signal, the RGB signal is first converted into a gray-scale value, and then other calculations are performed.

In some embodiments, the luminance information of the partitioned image is obtained by: the average gray-scale value of all pixels in the subarea image, or the maximum gray-scale value of all pixels, or the root mean square of all pixel gray-scale values. In the embodiment of the present application, the manner of calculating the average grayscale value has better noise immunity than the manner of taking the maximum value, and has higher efficiency than the manner of taking the root mean square.

S300, judging whether the duration of the unchanged brightness information of the subarea images with the preset proportion exceeds the preset duration or not according to each subarea image.

S400, when the duration that the brightness information of the subarea images with the preset proportion is not changed is determined to exceed the preset duration, controlling the display to display screen protection.

Specifically, in the embodiment of the present application, a plurality of partition images corresponding to an image to be displayed on a display are acquired at intervals, luminance information of the partition images is calculated, and if a duration in which the luminance information of the partition images in a preset proportion does not change exceeds a preset duration, a display screen of the display is controlled to be protected. And if the preset time length is not exceeded, repeatedly acquiring a plurality of subarea images corresponding to the to-be-displayed image to be displayed on the display.

As shown in fig. 5, the specific steps of the method for determining the time length during which the brightness information of the partition image with the preset ratio is not changed include:

s301, counting the number of the subarea images of the change of the brightness information of the current subarea image and the brightness information of each subarea image obtained by the last calculation.

S302, judging whether the proportion of the number of the subarea images without brightness information change to the total subarea images reaches a preset proportion.

And S303, if the preset proportion is reached, accumulating for 5S by an accumulator, and repeatedly acquiring a plurality of subarea images corresponding to the to-be-displayed image to be displayed on the display. And when the time length recorded by the accumulator is 2min, controlling the display to display the screen protection.

And S304, if the preset proportion is not reached, clearing the accumulator.

In some embodiments, the predetermined proportion is 90% -95%. It should be noted that the preset ratio can be set as required, because the display device can be applied to different scenes, and the preset ratio setting is different in different scenes, for example, a background in a KTV lyric mode is a constant picture, only lyrics change, and in order to avoid a screen burn phenomenon, the preset ratio can be set to 90% -95%.

In some embodiments, the screen saver is to automatically play a group of pictures or videos for a certain length of time. And controlling the display to display the screen saver in order to avoid the screen burn-in. The screen protection can enable the display interface to continuously change, and further avoid the situation that the service life of the display is shortened due to the fact that the display interface is not changed for a long time.

S500, in some embodiments, determining whether a user input is detected.

And S600, when the user input is detected, controlling the display to exit the screen saver. In particular, when the user desires to view other content using the display, the display screen saver may be terminated. The user can input an instruction for stopping displaying the screen saver through the keys on the control device, and the display is controlled to exit the screen saver.

In the embodiment of the present application, the segmented image may be obtained in two ways, including the first way mentioned above, which is a segmented image obtained by direct segmentation;

in addition, the second mode is to divide the user interface into small-partition images, combine the small-partition images according to rows or columns to obtain large-partition images, and determine the large-partition images as partition images. Specifically, the display interface is divided to obtain a plurality of small-partition images, for example, pixel blocks of 60 × 60 pixels may be used as the small-partition images. In some embodiments, the small subarea images are combined by rows to obtain subarea images.

Taking a 4K display as an example, the display interface is firstly divided into 64 (lines) × 36 (columns) small partition images, the small partition images are pixel blocks of 60 × 60 pixels, and at this time, the small partition images of each line are combined into partition images to obtain 64 partition images, and each partition image is a pixel block of 3840 × 60 pixels.

In some embodiments, the small-partition images are combined according to columns to obtain partition images, and also taking a 4k display as an example, the display interface is firstly divided into 64 (rows) × 36 (columns) small-partition images, the small-partition images are pixel blocks of 60 × 60 pixels, at this time, the small-partition images of each column are combined into partition images to obtain 36 partition images, and each partition image is a pixel block of 60 × 2160 pixels.

In addition, instead of combining the small-divided images into the divided images by rows or columns, the small-divided images may be combined in other forms, for example, the display interface may be finally divided into 6 (rows) × 6 (columns) by combining them, thereby obtaining 36 divided images.

For example, when the partition image is a large partition image, the specific steps of the method for determining the duration during which the brightness information of the partition image with the preset ratio is not changed are as shown in fig. 6, and the method includes:

s305, determining the brightness information of the small subarea image according to the gray value of each pixel in the small subarea image.

S306, if the brightness information of the small-partition image changes, the brightness information of the corresponding large-partition image is determined to change.

S307, counting the number of the large-partition images with the brightness information changed.

And S308, judging whether the ratio of the number of the large-region images with the changed brightness information to the total number of the large-region images reaches a preset ratio or not.

S309, if the proportion of the number of the large-partition images with the brightness information change to the total number of the large-partition images reaches a preset proportion, the accumulator is increased by 5S, and then the acquisition of the plurality of partition images corresponding to the to-be-displayed image to be displayed on the display is repeatedly executed. And when the time length recorded by the accumulator is 2min, controlling the display to display the screen protection.

And S310, if the preset proportion is not reached, clearing the accumulator.

While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.