CN115083342A - Display device and screen brightness adjusting method - Google Patents

Abstract

The disclosure relates to a display device and a screen brightness adjusting method, and relates to the technical field of display devices. Wherein, a display device includes: a display; a controller configured to: determining a plurality of screen partitions, and acquiring gray scale parameters of each screen partition within a target duration; determining a target screen partition from a plurality of screen partitions according to the gray scale parameters of each screen partition; determining a target white balance parameter according to the gray scale parameter of the target screen partition; and adjusting the white balance parameter of the screen to be the target white balance parameter. The embodiment of the disclosure improves the efficiency of screen brightness adjustment and avoids the screen burning phenomenon.

Description

Display device and screen brightness adjusting method

Technical Field

The present disclosure relates to the field of display device technologies, and in particular, to a display device and a screen brightness adjusting method.

Background

The Organic Light-Emitting Diode (OLED) 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, manufacturers at home and abroad successively launch high-end televisions with OLED screens. When the brightness of the OLED screen is adjusted, the related technology processes based on each pixel point, the problem of large data calculation amount exists, the adjustment efficiency of the brightness of the screen is low, the brightness adjustment is gradual, the use degree and the aging speed of each pixel point are different, the screen burning phenomenon can occur, and the display effect of the picture is influenced.

Disclosure of Invention

In order to solve the above technical problem or at least partially solve the above technical problem, the present disclosure provides a display device and a screen brightness adjustment method, which can improve the screen brightness adjustment efficiency, avoid the screen burning phenomenon, and improve the display effect of the picture.

In order to achieve the above purpose, the technical solutions provided by the embodiments of the present disclosure are as follows:

in a first aspect, the present disclosure provides a display device comprising:

a controller configured to: determining a plurality of screen partitions, and acquiring gray scale parameters of each screen partition within a target duration;

determining a target screen partition from a plurality of screen partitions according to the gray scale parameters of each screen partition, wherein the target screen partition is a screen partition with the gray scale parameters in a target gray scale range within a target duration;

determining a target white balance parameter according to the gray scale parameter of the target screen partition;

and adjusting the white balance parameter of the screen to be the target white balance parameter.

In some embodiments, a controller configured to: determining a weight coefficient of each screen partition in the plurality of screen partitions according to the position information of the plurality of screen partitions and/or historical display duration, wherein the historical display duration is the historical duration of each screen partition in a target gray scale range; and determining a target white balance parameter according to the gray scale parameter of the target screen partition and the weight coefficient of each screen partition.

In some embodiments, the controller is further configured to: and respectively determining the white balance parameters of each screen partition according to the gray scale parameters of the target screen partition and the weight coefficients of each screen partition.

In some embodiments, the target duration and the target gray scale range are determined according to the type of content to be displayed for the plurality of screen partitions.

In some embodiments, the controller is further configured to: acquiring an ambient light parameter;

a controller configured to: and determining a target white balance parameter according to the gray scale parameter of the target screen partition and the ambient light parameter.

In some embodiments, the target gray scale range is a first gray scale range, and the first gray scale range is a range greater than a first preset gray scale threshold and smaller than a second preset gray scale threshold;

a controller configured to: and determining a target white balance parameter according to the first scale coefficient and the gray scale parameter of the target screen partition, wherein the first scale coefficient corresponds to the first gray scale range.

In some embodiments, the target gray scale range is a second gray scale range, and the second gray scale range is a range greater than or equal to a second preset gray scale threshold;

a controller configured to: and determining a target white balance parameter according to a second scale coefficient and the gray scale parameter of the target screen partition, wherein the second scale coefficient corresponds to a second gray scale range.

In some embodiments, the gray scale parameter of the target screen partition is the highest gray scale parameter in the respective screen partition.

In some embodiments, the target gray scale range is a second gray scale range, the second gray scale range includes at least two sub gray scale ranges, the target screen partition includes m screen partitions, the m screen partitions are at least two screen partitions of the plurality of screen partitions;

a controller configured to: determining a first screen partition from the m screen partitions, wherein the first screen partition is a screen partition in a target sub-gray scale range in the m screen partitions; the number of the screen partitions of the gray scale parameter in the target sub-gray scale range is greater than the number of the screen partitions in other sub-gray scale ranges, and the other sub-gray scale ranges are sub-gray scale ranges in at least two sub-gray scale ranges except the target sub-gray scale range; and determining a target white balance parameter according to the second scale factor and the gray scale parameter of the first screen partition.

In a second aspect, a method for adjusting screen brightness is provided, including:

determining a plurality of screen partitions, and acquiring gray scale parameters of each screen partition within a target duration;

determining a target screen partition from a plurality of screen partitions according to the gray scale parameters of each screen partition, wherein the target screen partition is a screen partition in which the gray scale parameters are continuously in a target gray scale range within a target duration;

determining a target white balance parameter according to the gray scale parameter of the target screen partition;

and adjusting the white balance parameter of the screen to be the target white balance parameter.

In some embodiments, determining the target white balance parameter based on the gray scale parameter of the target screen partition comprises: determining a weight coefficient of each screen partition in the plurality of screen partitions according to the position information of the plurality of screen partitions and/or historical display duration, wherein the historical display duration is the historical duration of each screen partition in a target gray scale range; and determining a target white balance parameter according to the gray scale parameters of the target screen partition and the weight coefficient of each screen partition.

In some embodiments, after determining the weighting factor of each screen partition in the plurality of screen partitions according to the position information of the plurality of screen partitions and/or the historical display duration, the method further includes: and respectively determining the white balance parameters of each screen partition according to the gray scale parameters of the target screen partition and the weight coefficients of each screen partition.

In some embodiments, the target duration and the target gray scale range are determined according to the type of content to be displayed for the plurality of screen partitions.

In some embodiments, before determining the target white balance parameter according to the gray scale parameter of the target screen partition, the method further includes: acquiring an ambient light parameter;

determining a target white balance parameter according to the gray scale parameter of the target screen partition, comprising: and determining a target white balance parameter according to the gray scale parameter of the target screen partition and the ambient light parameter.

In some embodiments, the target gray scale range is a first gray scale range, and the first gray scale range is a range greater than a first preset gray scale threshold and smaller than a second preset gray scale threshold; determining a target white balance parameter according to the gray scale parameter of the target screen partition, comprising: and determining a target white balance parameter according to the first scale coefficient and the gray scale parameter of the target screen partition, wherein the first scale coefficient corresponds to the first gray scale range.

In some embodiments, the target gray scale range is a second gray scale range, and the second gray scale range is a range greater than or equal to a second preset gray scale threshold;

determining a target white balance parameter according to the gray scale parameter of the target screen partition, comprising:

and determining a target white balance parameter according to a second proportionality coefficient and the gray scale parameter of the target screen partition, wherein the second proportionality coefficient corresponds to a second gray scale range.

In some embodiments, the gray scale parameter of the target screen partition is the highest gray scale parameter in the respective screen partition.

In some embodiments, the target gray scale range is a second gray scale range, the second gray scale range includes at least two sub gray scale ranges, the target screen partition includes m screen partitions, the m screen partitions are at least two screen partitions of the plurality of screen partitions;

determining a target white balance parameter according to the second scale factor and the gray scale parameter of the target screen partition, comprising:

determining a first screen partition from the m screen partitions, wherein the first screen partition is a screen partition in a target sub-gray scale range in the m screen partitions;

the number of the screen partitions of the gray scale parameter in the target sub-gray scale range is greater than the number of the screen partitions in other sub-gray scale ranges, and the other sub-gray scale ranges are sub-gray scale ranges except the target sub-gray scale range in at least two sub-gray scale ranges;

and determining a target white balance parameter according to the second scale factor and the gray scale parameter of the first screen partition.

In a third aspect, a computer-readable storage medium is provided, comprising: the computer-readable storage medium stores thereon a computer program which, when executed by a processor, implements the screen brightness adjustment method according to the second aspect or any one of its alternative embodiments.

In a fourth aspect, a computer program product is provided, comprising: when the computer program product runs on a computer, the computer is caused to implement the screen brightness adjustment method according to the second aspect or any one of its alternative embodiments.

Compared with the related technology, the technical scheme provided by the embodiment of the disclosure has the following beneficial effects:

the method comprises the steps of dividing a screen of display equipment to obtain a plurality of screen partitions, obtaining gray scale parameters of each screen partition within a target time length, and then determining a target screen partition from the plurality of screen partitions according to the gray scale parameters of each screen partition, wherein the target screen partition is a screen partition in which the gray scale parameters within the target time length are within a target gray scale range; the screen is partitioned, real-time detection is carried out on a plurality of screen partitions, so that the screen partition in a certain brightness state for a long time is determined to be used as a target screen partition, the possibility of screen burning exists in the target screen partition, a target white balance parameter is determined according to a gray scale parameter corresponding to the target screen partition, and finally the white balance parameter of the screen is adjusted to be the target white balance parameter, so that the screen brightness is adjusted, the screen burning phenomenon of display equipment is prevented, and the display effect of a picture is improved.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.

In order to more clearly illustrate the embodiments of the present disclosure or technical solutions in the related art, the drawings used in the description of the embodiments or related art will be briefly described below, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.

Fig. 1 is a schematic view of an operation scenario between a display device and a control apparatus in an embodiment of the present disclosure;

fig. 2 is a block diagram of a hardware configuration of a display device according to an embodiment of the present disclosure;

fig. 3A is a schematic view of an application scenario of a method for adjusting screen brightness according to an embodiment of the present disclosure;

fig. 3B is a schematic view of an application scenario of a method for adjusting screen brightness according to an embodiment of the present disclosure;

fig. 4 is a schematic flowchart of a method for adjusting screen brightness according to an embodiment of the present disclosure;

FIG. 5A is a first diagram of a plurality of screen partitions provided in an embodiment of the present disclosure;

FIG. 5B is a second diagram of multiple screen partitions provided in embodiments of the present disclosure;

FIG. 6 is a first diagram of a target screen partition provided in an embodiment of the present disclosure;

FIG. 7 is a second schematic diagram of a target screen partition provided in an embodiment of the present disclosure;

FIG. 8 is a third schematic diagram of a target screen partition provided in an embodiment of the present disclosure;

FIG. 9 is a first schematic diagram illustrating adjusting screen brightness according to an embodiment of the present disclosure;

fig. 10 is a second schematic diagram of adjusting the screen brightness according to the embodiment of the disclosure.

Detailed Description

In order that the above objects, features and advantages of the present disclosure may be more clearly understood, aspects of the present disclosure will be further described below. It should be noted that the embodiments and features of the embodiments of the present disclosure may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present disclosure, but the present disclosure may be practiced in other ways than those described herein; it is to be understood that the embodiments disclosed in the specification are only a few embodiments of the present disclosure, and not all embodiments.

The terms "first," "second," "third," and the like in the description and claims of this application and in the foregoing drawings are used for distinguishing between different elements and not for describing a particular sequential order. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art. Further, in the description of the present application, "a plurality" means two or more unless otherwise specified. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.

In order to more clearly illustrate the technical solutions in the embodiments or related technologies of the present disclosure, the following will briefly introduce the technical terms used in the description of the embodiments or related technologies:

the OLED and OLED Display technologies are different from the conventional Liquid Crystal Display (LCD) Display modes, and require no backlight, and use a very thin organic material coating and a glass substrate or a special plastic substrate, and when a current flows through the organic material coating, the organic material emits light.

Burn-in, the correct statement of burn-in should be called "residual". As long as the display is self-luminous, no matter a picture tube, plasma or OLED, the phenomenon of image retention can occur. When the image is unchanged for a long time and the contrast of the image is strong, a part of shadow of the originally bright part remains in the image after the image is switched. This is caused by the display technology limitation of the OLED, because the light emitting efficiency of the three-color light source of blue, red and green is not uniform, and the blue pixel is most susceptible to degradation, the red pixel is second, and the green pixel is least susceptible to degradation. Generally, such "afterimages" will fade gradually when the picture is still for a short time, but if the still picture is played for an excessively long time or accumulated for a long time, permanent damage to the display will result, i.e., the "afterimages" will not fade.

In order to solve the technical problem, the embodiment of the present disclosure provides a display device and a screen brightness adjusting method. Wherein, the display device includes: display, controller. The method comprises the steps that a controller divides a screen of display equipment to obtain a plurality of screen partitions, gray scale parameters of each screen partition within a target time length are obtained, then a target screen partition is determined from the plurality of screen partitions according to the gray scale parameters of each screen partition, and the target screen partition is a screen partition with the gray scale parameters within the target time length within a target gray scale range; the screen is partitioned, real-time detection is carried out on a plurality of screen partitions, so that the screen partition in a certain brightness state for a long time is determined to be used as a target screen partition, the possibility of screen burning exists in the target screen partition, a target white balance parameter is determined according to a gray scale parameter corresponding to the target screen partition, and finally the white balance parameter of the screen is adjusted to be the target white balance parameter, so that the screen brightness is adjusted, the screen burning phenomenon of display equipment is prevented, and the display effect of a picture is improved.

Fig. 1 is a schematic view of an operation scenario between a display device and a control apparatus in an embodiment of the present disclosure.

In some embodiments, the user may operate the display apparatus 200 through the smart device 300 or the control device 100, and the display apparatus 200 performs data communication with the server 400.

As shown in fig. 1, an application scenario of the display device provided by the present disclosure will be described by taking an example in which the control device 100 operates the display device 200. In an application scenario, when a user wants to play a video on the display device 200, the display device is operated by the control apparatus 100. In the process of playing a video by the display device 200, if the screen is in high brightness for a long time, a screen burn-in phenomenon occurs, which results in a shortened service life of the screen. In order to prevent the screen from being burned, the controller in the display device 200 divides the screen into a plurality of screen partitions, obtains the gray scale parameter of each screen partition within the target time length, and then determines a target screen partition from the plurality of screen partitions according to the gray scale parameter of each screen partition, where the target screen partition is a screen partition in which the gray scale parameter is continuously in the target gray scale range within the target time length; further, a target white balance parameter is determined according to the gray scale parameter corresponding to the target screen partition, and finally, the screen brightness is adjusted according to the white balance parameter. The screen is partitioned to adjust the brightness, the efficiency of adjusting the brightness of the screen is improved, the brightness of the screen in the target time length is monitored to adjust the brightness in time, the screen burning phenomenon of the display equipment is prevented, and the display effect of the picture is improved.

In some embodiments, the control apparatus 100 may be a remote controller, and the communication between the remote controller and the terminal device includes infrared protocol communication or bluetooth protocol communication, and other short-distance communication methods, and controls the display device 200 in a wireless or 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.

In some embodiments, the smart device 300 (e.g., mobile terminal, tablet, computer, laptop, etc.) may also be used to control the display device 200. For example, the display device 200 is controlled using an application program running on the smart device.

In some embodiments, the display device 200 may also receive the user's control through touch or gesture, etc., instead of using the smart device or control device described above to receive instructions.

In some embodiments, the display device 200 may also be controlled 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 by a module configured inside the display device 200 to obtain a voice command, or may be received by a voice control device provided outside the display device 200.

In some embodiments, the display device 200 may be allowed to communicatively connect through a Local Area Network (LAN), a Wireless Local Area Network (WLAN), and other networks. The server 400 may provide various contents and interactions to the display apparatus 200. The server 400 may be a cluster or a plurality of clusters, and may include one or more types of servers. Or a cloud server. The above is merely an example, and this is not limited in this embodiment.

Fig. 2 is a block diagram of a hardware configuration of a display device according to an embodiment of the present disclosure. The display apparatus as shown in fig. 2 includes at least one of a tuner demodulator 210, a communicator 220, a detector 230, an external device interface 240, a controller 250, a display 260, an audio output interface 270, a memory, a power supply, and a user interface 280. The controller includes a central processing unit, a video processor, an audio processor, a graphic processor, a Random Access Memory (RAM), a Read-Only Memory (ROM), and first to nth interfaces for input/output. The display 260 may be at least one of a liquid crystal display, an OLED display, a touch display, and a projection display, and may also be a projection device and a projection screen. The tuner demodulator 210 receives a broadcast television signal through a wired or wireless reception manner, and demodulates an audio/video signal, such as an Electronic Program Guide (EPG) data signal, from a plurality of wireless or wired broadcast television signals. The detector 230 is used to collect signals of the external environment or interaction with the outside. The controller 250 and the tuner-demodulator 210 may be located in different separate devices, that is, the tuner-demodulator 210 may also be located in an external device of the main device where the controller 250 is located, such as an external set-top box.

In some embodiments, the controller 250 controls the operation of the display device and responds to user operations through various software control programs stored in memory. The controller 250 controls the overall operation of the display apparatus 500. The User may enter User commands in a Graphical User Interface (GUI) displayed on display 260, and the User input Interface receives the User input commands through the GUI. Alternatively, the user may input the user command by inputting a specific sound or gesture, and the user input interface receives the user input command by recognizing the sound or gesture through the sensor.

In some embodiments, a "user interface" is a media interface for interaction and information exchange between an application or operating system and a user that enables conversion between an internal form of information and a form that is acceptable to the user. A common presentation form of a user interface is a graphical user interface, which refers to a user interface displayed in a graphical manner and related to computer operations. The interface element may be an icon, a window, a control, or the like, displayed in a display screen of the electronic device, where the control may include at least one of 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, and a Widget (Web Widget).

In some embodiments, the controller includes at least one of a Central Processing Unit (CPU), a video processor, an audio processor, a Graphic Processing Unit (GPU), a RAM Random Access Memory (RAM), a ROM (Read-Only Memory), a first interface to an nth interface for input/output of a Digital Signal Processor (DSP), a communication Bus (Bus), and the like.

A CPU processor. For executing operating system and application program instructions stored in the memory, and executing various application programs, data and contents according to various interactive instructions receiving external input, so as to finally display and play various audio-video contents. The CPU processor may include a plurality of processors. E.g. comprising a main processor and one or more sub-processors.

The present disclosure provides a display apparatus 200, including:

a display 260;

a controller 250 configured to: determining a plurality of screen partitions, and acquiring gray scale parameters of each screen partition within a target duration;

determining a target screen partition from a plurality of screen partitions according to the gray scale parameters of each screen partition, wherein the target screen partition is a screen partition with the gray scale parameters in a target gray scale range within a target duration;

determining a target white balance parameter according to the gray scale parameter of the target screen partition;

and adjusting the screen brightness based on the white balance parameter of the screen.

Above-mentioned display device realizes the regulation of luminance through carrying out the subregion to the screen, has promoted screen brightness control's efficiency to monitor the luminance of screen in the target length of time and realize in time adjusting luminance, thereby prevent that display device from appearing burning the screen phenomenon, promoted the display effect of picture.

In some embodiments, display device 200 further comprises an ambient light sensor configured to: detecting an ambient light parameter;

a controller 250 configured to: acquiring an ambient light parameter detected by an ambient light sensor;

and determining a target white balance parameter according to the gray scale parameter of the target screen partition and the ambient light parameter.

Above-mentioned display device 200 considers the ambient light influence, needs in time adjust screen brightness under the circumstances that ambient light changes to adapt to current environment, when having realized guaranteeing under brighter environment that the screen is visual, reduced screen brightness and prevented that the screen from appearing burning the screen phenomenon.

As shown in fig. 3A, fig. 3A is a schematic view of an application scenario of a screen brightness adjusting method according to an embodiment of the present disclosure, where fig. 3A includes a display device 200. For convenience of illustration, a control 201 for adjusting the white balance parameter is displayed on the display device 200, and the brightness control is used for showing the brightness of the current screen, that is, the white balance parameter. The white balance parameter of the display device 200 corresponding to (a) in fig. 3A is 80%, which indicates that the screen brightness is in a high brightness state, and the screen is damaged by the high brightness state for a long time, so that the brightness is to be reduced. The method comprises the steps of dividing a screen of the display device 200 to obtain a plurality of screen partitions, obtaining gray scale parameters of each screen partition within a target time length, and then determining a target screen partition from the plurality of screen partitions according to the gray scale parameters of each screen partition, wherein the target screen partition is a screen partition in which the gray scale parameters within the target time length are continuously within a target gray scale range; further, a target white balance parameter is determined according to the gray scale parameter corresponding to the target screen partition, and finally, the screen brightness is adjusted according to the white balance parameter. If the white balance parameter in fig. 3A (b) is adjusted from 80% to 60%, the brightness of the current screen is in a safe state, and the brightness of the screen is reduced. The screen is partitioned to adjust the brightness, the efficiency of adjusting the brightness of the screen is improved, the brightness of the screen in the target time length is monitored to adjust the brightness in time, the screen burning phenomenon of the display equipment is prevented, and the display effect of the picture is improved.

As shown in fig. 3B, fig. 3B is a schematic view of an application scenario of a screen brightness adjustment method according to an embodiment of the present disclosure, where fig. 3B includes a display device 200. For convenience of illustration, a control 201 for adjusting the white balance parameter is displayed on the display device 200, and the brightness control is used for showing the brightness of the current screen, that is, the white balance parameter. In fig. 3A, (a) the corresponding display device 200 has a white balance parameter of 40%, which indicates that the screen brightness is in a low brightness state, and detects a historical white balance parameter of the screen to determine that the historical white balance parameter is 60%. The method comprises the steps of dividing a screen of the display device 200 to obtain a plurality of screen partitions, obtaining gray scale parameters of each screen partition within a target time length, and then determining a target screen partition from the plurality of screen partitions according to the gray scale parameters of each screen partition, wherein the target screen partition is a screen partition in which the gray scale parameters within the target time length are continuously within a target gray scale range; further, a target white balance parameter is determined according to the gray scale parameter corresponding to the target screen partition, and finally, the screen brightness is adjusted according to the white balance parameter. If the white balance parameter in fig. 3A (b) is adjusted from 40% to 60%, the brightness of the current screen is in a safe state, and the brightness of the screen is improved, thereby ensuring good viewing experience of the user. The screen is partitioned to adjust the brightness, the efficiency of adjusting the brightness of the screen is improved, the brightness of the screen in the target time length is monitored to adjust the brightness in time, the screen burning phenomenon of the display equipment is prevented, and the display effect of the picture is improved.

It should be noted that a screen brightness adjusting method provided by the present disclosure may be a non-sensory adjustment, that is, the control 201 for adjusting the white balance parameter is not displayed on the display device 200, and the change of the brightness is processed in the background of the display device. For the convenience of explaining the result of adjusting the brightness, the following description still uses the brightness control.

The screen brightness adjusting method provided in the embodiment of the present disclosure may be implemented by a computer device, where the computer device includes, but is not limited to, a server, a personal computer, a notebook computer, a tablet computer, a smart television, a vehicle-mounted device, and the like.

It should be noted that the protection range of the screen brightness adjustment method described in the embodiment of the present disclosure is not limited to the execution sequence of the steps listed in this embodiment, and all the solutions implemented by the steps increase, decrease, and step replacement in the related art according to the principle of the present disclosure are included in the protection range of the present disclosure.

As shown in fig. 4, fig. 4 is a flowchart illustrating a method for adjusting screen brightness according to an embodiment of the present disclosure, where the method may be executed by a screen brightness adjusting apparatus, where the apparatus may be implemented by software and/or hardware, and may be generally integrated in an electronic device, such as the display device described above. As shown in fig. 4, the method mainly includes the following steps S401 to S404:

s401, determining a plurality of screen partitions, and acquiring gray scale parameters of each screen partition in a target duration.

The gray scale parameter is an average gray scale value of the pixel points of each screen partition, or a maximum gray scale value of all the pixel points, or a mean square gray scale value of all the pixel points. In the embodiments of the present disclosure, the manner of calculating the average gray scale value has better interference resistance than the manner of taking the maximum value, and has higher efficiency than the manner of the root mean square. It can be understood that the gray scale parameter is a gray scale known by those skilled in the art, and the gray scale is a luminance variation between the brightest and darkest, which is divided into several parts, so as to facilitate the control of the screen luminance corresponding to the signal input.

The target time length is determined according to the types of the contents to be displayed of the plurality of screen partitions, and the target time length is different when the types of the contents to be displayed are different. The type of content to be displayed refers to the luminance dynamic range, which includes but is not limited to: standard Dynamic Range (SDR), High Dynamic Range (HDR). For example, if the type of the content to be displayed is SDR, the target duration is 5 minutes; if the type of the content to be displayed is HDR, the target duration is 1 minute. The above-mentioned numerical values set for the target time length are merely exemplary illustrations, and the present disclosure does not limit this.

The embodiment of the present disclosure provides an implementation manner, in which grayscale parameters of multiple screen partitions are detected according to a preset time, and the grayscale parameters of the multiple screen partitions within a target duration are obtained when a number of times reaches a preset threshold.

For example, the preset time is 5s, the preset threshold is 60, and the target time duration is 5 minutes. And 5s, detecting the gray scale parameters of the multiple screen partitions at one time until the detection times reach 60 times, and obtaining the gray machine parameters of the multiple screen partitions within 5 minutes.

Among them, SDR images do not have more comprehensive details and do not have a wider color range. The image is over-exposed, and the information of the brighter part of the image is lost; similarly, when an image is underexposed, information on the darker portions of the image is lost. The HDR can provide more color ranges and image details, improve the contrast of image brightness, greatly restore the real environment and present high image quality. The screen partition which is in high brightness and easy to cause screen burning can be detected more accurately by setting different target time lengths aiming at different brightness dynamic ranges.

The following will describe the determination process of the plurality of screen sections:

it will be appreciated by those skilled in the art that the screen of the display device is made up of a number of pixels. For example, the resolution of the 4K super-resolution lcd is 3840 × 2160, and the screen of the 4K super-resolution lcd has 829400 pixels. Among them, 4K resolution (4KResolution) is an emerging resolution standard for digital cinema and digital content, and the name of 4K is derived from its horizontal resolution of about 4000 pixels (pixels).

The large number of pixels results in a large amount of corresponding calculations, which burdens the controller of the display device. To take into account functionality and performance, the present disclosure provides for partitioning a screen into multiple screen partitions. In the embodiment of the present disclosure, an implementation manner is provided, in which a screen is divided into M rows and N columns, and M × N screen partitions are determined. Taking the example of a 4K screen, the screen includes 3840 × 2160 pixels, and can be divided into 64 (rows) × 36 (columns) divisional images, where each divisional image is a pixel block of 60 × 60 pixels; it is also possible to divide the image into 128 (columns) × 72 (rows) divisional images, each divisional image being a pixel block of 30 × 30 pixels. In the embodiment of the present disclosure, how to divide the screen is not limited, and the smaller the area of the partitioned image is, the more accurate the judgment on whether the screen brightness is unchanged within the target duration is.

As shown in fig. 5A, fig. 5A is a schematic diagram of a plurality of screen partitions provided in the embodiment of the present disclosure, where a screen is divided into 3 rows and 3 columns to obtain 9 screen partitions, which are respectively S1, S2, S3, S4, S5, S6, S7, S8, and S9.

As shown in fig. 5B, fig. 5B is a schematic diagram of a plurality of screen partitions provided in the embodiment of the present disclosure, and in another embodiment provided in the embodiment of the present disclosure, a central area of a screen is determined first, and then areas outside the center are divided to determine a plurality of screen partitions. In fig. 5B, a central region C1 is first determined, and then regions other than the central region C1 are divided into regions C2, C3, C4, and C5, so that 5 screen partitions are determined: c1, C2, C3, C4, C5. It should be emphasized that the present disclosure does not specifically limit the dividing manner of the screen, and the above-mentioned fig. 5A and 5B are only exemplary illustrations.

In some embodiments, the display device may determine a plurality of screen partitions according to the input of the user, so as to meet the diversified needs of the user. In the embodiment of the present disclosure, an implementation manner is provided, where a parameter input by a user is first obtained, where the parameter may be the number of screen partitions, and may also be an area value of each screen partition. Then, a plurality of screen partitions are determined according to the parameters input by the user, for example, the resolution of the display device is 3840 × 2160, and the obtained parameters input by the user are the number of screen partitions: 2304, then 2304 screen partitions are determined, and for example, the parameters input by the user are the area values of the screen partitions: 64 x 36, then 2304 screen partitions are determined.

In some embodiments, after determining the plurality of screen partitions, the gray scale parameters for each screen partition within the target duration are obtained. Each screen partition comprises a certain number of pixel points, and the screen partitions are used as a whole for calculation, so that gray scale parameters of a large number of pixel points are prevented from being calculated at one time, and the processing burden of a display device controller is reduced. The embodiment of the present disclosure provides an implementation manner, which first obtains gray scale parameters of all pixel points in each screen partition, and then performs averaging to obtain gray scale parameters of each screen partition.

According to the embodiment, the screen is divided into the plurality of screen partitions, the screen is divided into the whole to be calculated, the calculation amount can be reduced, the processing load of the display device controller is reduced, and therefore the brightness of the screen can be adjusted more accurately.

S402, determining a target screen partition from the multiple screen partitions according to the gray scale parameters of the screen partitions.

And the target screen partition is a screen partition in which the gray scale parameters are in the target gray scale range within the target duration. It is understood that the number of the target screen partitions may be one or more, and the present disclosure does not limit this.

As mentioned above, the target duration is determined according to the type of the content to be displayed, and correspondingly, the target gray scale range is also determined according to the type of the content to be displayed. For example, if the type of the content to be displayed is SDR, the target gray scale range is greater than or equal to 90%; if the type of the content to be displayed is HDR, the target gray scale range is greater than or equal to 80%.

The embodiment of the present disclosure provides an implementation manner, in which gray scale parameters of a plurality of screen partitions are detected according to a preset time, a counter is incremented by one when the gray scale parameters are within a target gray scale range, and the screen partition is determined as a target screen partition when the counter accumulates to a preset number of times.

Illustratively, the preset time is 5s, the preset times are 60, and the target time duration is 5 minutes. And 5s, detecting the gray-scale parameters of a plurality of screen partitions at a time, adding one to a counter when the gray-scale parameters of the screen partitions are detected to be in a range of more than or equal to 90%, and adding 60 times to the counter to indicate that the gray-scale parameters of the screen partitions are continuously in the range of more than or equal to 90% in 5 minutes, wherein the possibility of screen burning exists, and the screen partitions are determined as target screen partitions.

In general, gray scale parameters of each pixel point on a screen of display equipment are continuously changed, and according to the embodiment provided by the disclosure, the brightness condition of the screen is comprehensively detected by processing the screen partition in which the gray scale parameters are changed within a target gray scale range within target duration, so that the screen partition with high brightness and screen burning possibility is accurately determined.

Exemplarily, as shown in fig. 6, fig. 6 is a first schematic diagram of a target screen partition provided in an embodiment of the present disclosure. The target gray scale range is greater than or equal to 90%, the gray scale parameter of the screen partition S5 changes from 91% to 93% to 92% within the target time period, and the gray scale parameter of the visible screen partition S5 is continuously within the target gray scale range within the target time period, so that the screen partition S5 can be determined as the target screen partition. And the screen section S9 has changed the gray scale parameter from 94% to 90% and to 83% within the target duration, then the screen section S9 is not the target screen section.

In some embodiments, different gray scale ranges are set according to the gray scale parameters of the respective screen partitions, so as to determine the target screen partition more finely, first, a number of screen partitions with gray scale parameters greater than 60% are determined from a plurality of screen partitions with gray scale parameters greater than a second preset gray scale threshold, for example, the second preset gray scale threshold is 60%.

Under the normal condition, the screen burning phenomenon may occur under the condition that the gray scale parameter of the screen is greater than the second preset gray scale threshold value, through the above embodiment, the screen partitions with the gray scale parameter less than or equal to the second preset gray scale threshold value are removed, and the screen partitions are in the safe range of brightness without reducing the brightness, so that the unnecessary calculation amount is reduced, and the processing efficiency of the display device controller is improved.

Exemplarily, as shown in fig. 7, fig. 7 is a schematic diagram two of a target screen partition provided in the embodiment of the present disclosure. In fig. 7, the second predetermined grayscale threshold is 60%, the grayscale range of the screen partition C1 is 90% to 95%, the grayscale range of the screen partition C2 is 85% to 90%, the grayscale range of the screen partition C3 is 50% to 60%, the grayscale range of the screen partition C4 is 85% to 90%, and the grayscale range of the screen partition C5 is 50% to 60%. According to the second preset gray level threshold of 60%, it is determined that the screen partitions C3 and C5 are in the safe range of brightness without reducing the brightness. Further, according to the target gray scale range being greater than or equal to 90%, the target screen division is determined from the screen divisions C1, C2, C4, resulting in a target screen division of C1.

In some embodiments, the target gray scale range includes a first gray scale range and a second gray scale range, wherein the first gray scale range is a range greater than a first preset gray scale threshold and less than a second preset gray scale threshold; the second gray scale range is a range greater than or equal to a second preset gray scale threshold. For example, the first predetermined gray level threshold is 60% and the second predetermined gray level threshold is 80%, and the target gray level range includes two gray level ranges of 60% -80% and more than 80%.

Exemplarily, as shown in fig. 8, fig. 8 is a third schematic diagram of a target screen partition provided in the embodiment of the present disclosure. As shown in Table 1, Table 1 shows the gray scale parameters for each screen partition in FIG. 8.

Screen partitioning	Gray scale parameter
		S1	70％～75％
S2
		80％～85％
S3			70％～75％
	S4
		80％～85％
	S5
		90％～95％
	S6
		80％～85％
	S7		70％～75％
S8
		80％～85％
S9			70％～75％

TABLE 1

Since the target gray scale range includes the gray scale ranges of the two stages of 60% to 80% and more than 80%, the gray scale parameters of the screen partitions S1, S2, S3, S4, S5, S6, S7, S8 and S9 are determined to be the target screen partitions according to the gray scale parameters of the screen partitions S1, S2, S3, S4, S5, S6, S7, S8 and S9 in fig. 8 shown in table 1, and the gray scale parameters of the screen partitions S2, S4, S5, S6 and S8 are more than 80%, and are the target screen partitions of the second gray scale range, and the gray scale parameters of the screen partitions S1, S3, S7 and S9 are within 60% to 80%, and are the target screen partitions of the first gray scale range.

The following description will be made with respect to the classification of the target screen partition:

A. target screen partition one

And the first target screen partition is a screen partition in which the gray scale parameters are continuously in the first gray scale range within the target time length. For example, the screen sections S1, S3, S7, S9 described above.

B. Target screen partition two

And the second target screen partition is a screen partition in which the gray scale parameters are continuously in a second gray scale range within the target time length. For example, the screen sections S2, S4, S5, S6, S8 described above.

a. And the gray scale parameters in the target duration are continuously in the screen partitions of the target sub-gray scale range.

In some embodiments, the second gray scale range includes at least two sub gray scale ranges, and the target screen partition includes m screen partitions, where m is a positive integer greater than 2. And determining a first screen partition from the m screen partitions, wherein the first screen partition is a screen partition in the target sub-gray scale range in the m screen partitions. The number of the screen partitions of the gray scale parameter in the target sub-gray scale range is larger than the number of the screen partitions in other sub-gray scale ranges, and the other sub-gray scale ranges are sub-gray scale ranges except the target sub-gray scale range in at least two sub-gray scale ranges.

Illustratively, as shown in table 1, the second gray scale range includes at least two sub gray scale ranges of 90% -95% and 80% -85%, and the target screen division includes S2, S4, S5, S6, S8. Determining first screen partitions S2, S4, S6 and S8 from the 5 target screen partitions, wherein the gray scale parameters of the first screen partitions S2, S4, S6 and S8 are all in 80% -85%, and 80% -85% of the first screen partitions can be determined as a target sub-gray scale range.

b. And the gray scale parameters in the target duration are continuously in a second gray scale range, and the number ratio of the gray scale parameters is larger than the preset number ratio of the gray scale parameters. For example, the preset number proportion is 60%, the second gray scale range is 80% to 85%, the gray scale parameters of S2, S4, S6 and S8 in the screen partitions S2, S4, S5, S6 and S8 are all 80% to 85%, the gray scale parameters of 4 screen partitions in 5 screen partitions are in the second gray scale range, the proportion is 80%, and the preset number proportion is more than 60%, and the target screen partition is determined to be the screen partition S2, S4, S6 or S8.

c. And within the target time length, the gray scale parameters are continuously in the second gray scale range, and the screen partition with the highest gray scale parameters is formed. For example, the grayscale parameters of S2, S4, S6 and S8 in the screen partitions S2, S4, S5, S6 and S8 are all 80% -85%, and the grayscale parameters of the screen partition S5 are 90% -95%, so that the screen partition S5 is determined to be the target screen partition.

In the embodiment, the target screen partition is refined, so that the white balance parameter which is more accurate and meets the brightness adjustment requirement is determined according to the target screen partition in the following.

And S403, determining a target white balance parameter according to the gray scale parameter of the target screen partition.

The white balance parameter is known to those skilled in the art, and is an index describing the accuracy of white color generated by mixing three primary colors of red, green and blue in a display.

In some embodiments, if the target screen partition is a screen partition in which the target gray scale range is determined according to the type of the content to be displayed, the target white balance parameter is determined according to the gray scale parameter of the target screen partition.

For example, as mentioned above, when the type of the content to be displayed is SDR and the target screen partition is a screen partition whose gray scale range is greater than or equal to 90%, the target white balance parameter may be determined to be 80% of the current white balance parameter according to the gray scale parameter 91% of the target screen partition; when the type of the content to be displayed is HDR and the target screen partition is a screen partition whose gray scale range is greater than or equal to 80%, the target white balance parameter may be determined to be 70% of the current white balance parameter according to 91% of the gray scale parameter of the target screen partition.

In practical application, the use conditions of each screen partition of the screen of the display device are different, and even at the same time, the gray scale parameters of each screen partition are different, so that the aging degrees of the screen partitions are different, and the screen burn-in phenomenon is easy to occur. In order to prolong the service life of the screen, the target white balance parameter can be determined according to the gray scale parameter of the screen partition with the highest use frequency or the most serious aging degree.

The position information of each screen partition can represent the aging degree of the screen partition, for example, the aging degree of the screen partition at the center is higher, the aging degree of the screen partition close to the center is lower, and the aging degree of the screen partition at the edge is lowest under the normal condition. The historical display duration of each screen partition can represent the use frequency of the screen partition, the historical display duration is the historical duration of each screen partition in the target gray scale range, and it can be understood that the longer the historical display duration is, the longer the time for representing that the screen partition is in the high-brightness state is, and the use frequency is higher.

In some embodiments, the weighting factor of each screen partition is determined according to the position information of the plurality of screen partitions. Wherein the weight coefficient is positively correlated with the position information of the screen partition. The closer the position information of the screen partition is to the central area, the larger the weight coefficient is, the higher the degree of aging of the screen partition is represented.

Illustratively, taking fig. 5B as an example, the weighting coefficients of the screen partitions are determined according to the position information of the screen partitions, and then the weighting coefficient of the screen partition C1 is greater than the weighting coefficients of the screen partitions C2, C3, C4 and C5.

In some embodiments, the weighting factor of each screen partition is determined according to the historical display duration of the screen partitions. Wherein the weight coefficient is positively correlated with the history display time length. The longer the history display time is, the larger the weight coefficient is, and the higher the aging degree of the screen partition is represented.

For example, taking fig. 5B as an example, the history display duration of the screen partition C1 is t1, the history display duration of the screen partition C2 is t2, and t1> t2, then the weight coefficient a of the screen partition C1 is greater than the weight coefficient B of the screen partition C2.

In some embodiments, the weighting factor of each screen partition is determined according to the position information and the historical display duration of the plurality of screen partitions.

Illustratively, taking fig. 5B as an example, the weighting factor x is obtained according to the position information of the screen partition C1, and the weighting factor y is obtained according to the position information of the screen partition C2. And obtaining a weight coefficient a according to the historical display time length t1 of the screen partition C1, and obtaining a weight coefficient b according to the historical display time length t2 of the screen partition C1, wherein the weight coefficient of the screen partition C1 is ax, and the weight coefficient of the screen partition C2 is by.

According to the embodiment, the aging degree and the use frequency of the screen partition are determined according to the position information and/or the historical display duration of the screen partitions, so that the weight coefficient required by determining the white balance parameter is obtained, the screen partition with the highest burning possibility can be focused on to determine the white balance parameter, and the screen brightness can be adjusted more accurately.

After the weight coefficients of all screen partitions are obtained, the target white balance parameters are determined according to the gray scale parameters of the target screen partitions, so that the brightness is adjusted according to the screen partition with the maximum aging degree and/or the highest use frequency, the screen is protected to the maximum degree, and the screen burning phenomenon is prevented.

In some embodiments, the target white balance parameter is determined according to the weighting factor of each screen partition and the gray scale parameter of the target screen partition, it can be understood that the white balance parameters of each screen partition are the same, that is, the screen realizes brightness adjustment of the whole screen according to one white balance parameter.

In some embodiments, the white balance parameters of each screen partition are respectively determined according to the weight coefficients of each screen partition and the gray scale parameters of the target screen partition, and it can be understood that the corresponding white balance parameters are determined for each screen partition, so that the brightness adjustment of the screen partitions can be realized according to the white balance parameters, the diversified requirements of users can be met, and the user experience can be improved.

In addition, the target white balance parameters can be determined according to the white balance parameters of each screen partition to obtain the final whole target white balance parameters, so that the brightness of the whole screen is adjusted, and the uniformity of the brightness of the picture is improved.

As mentioned above, the target gray scale range can be a two-stage gray scale range, so that the brightness of the screen partitions with different gray scale degrees can be adjusted in a targeted manner, and the accuracy of the brightness adjustment of the screen is improved. The following will describe the process of determining the target white balance parameter for the target screen partition corresponding to the first gray scale range and the target screen partition corresponding to the second gray scale range:

(1) the target screen partition is a screen partition in which the gray scale parameter is continuously in the first gray scale range within the target time length

And if the target screen partition is a screen partition in which the gray scale parameters are continuously in the first gray scale range within the target duration, determining the target white balance parameters according to the first proportional coefficient. The first scale coefficient is inversely related to the first gray scale range, and it can be understood that the larger the gray scale parameter of the first gray scale range is, the higher the brightness of the target screen partition is, the larger the adjustment degree is, and accordingly, the smaller the first scale coefficient is.

Illustratively, the first gray scale range is 60% to 80%, and the first scale factor is set to 90%, which means that the white balance parameter of the screen is adjusted to 90% of the current white balance parameter.

(2) The target screen partition is a screen partition in which the gray scale parameter is continuously in a second gray scale range within the target time length

And if the target screen partition is the screen partition in which the gray scale parameters are continuously in the second gray scale range within the target duration, determining the target white balance parameters according to the second scale coefficient. The second scale factor is in negative correlation with the second gray scale range, and it can be understood that the larger the gray scale parameter of the second gray scale range is, the higher the brightness of the target screen partition is, the larger the adjustment degree is, and correspondingly, the smaller the second scale factor is.

Illustratively, the second gray scale range is greater than 80%, and the second scale factor is set to 80%, which means that the white balance parameter of the screen is adjusted to 80% of the current white balance parameter.

In some embodiments, the number of the target screen partitions is multiple, in order to better prevent the screen burn-in phenomenon, the target screen partition is a screen partition in which the gray scale parameter is continuously in the second gray scale range within the target duration, and the screen partition with the highest gray scale parameter needs to determine the white balance parameter for the target screen partition in which the gray scale parameter is highest and the screen burn-in phenomenon is most likely to occur. And determining a target white balance parameter according to a second proportionality coefficient and the gray scale parameter of the target screen partition.

In some embodiments, to ensure uniformity of screen brightness adjustment, the gray scale parameter within the target duration is continuously within a target sub-gray scale range, the target sub-gray scale range includes the largest number of first screen partitions, and then the target white balance parameter is determined according to the second scale factor and the gray scale parameter of the target screen partition. The number proportion of the target screen partition in the multiple screen partitions can also be preset, for example, the screen partition with the number proportion larger than the preset number proportion and the gray scale parameter continuously in the second gray scale range in the target duration is used as the target screen partition.

In some embodiments, considering the influence of ambient light, the screen brightness needs to be adjusted in time under the condition of ambient light change to obtain the ambient light parameter, and then the target white balance parameter is determined according to the ambient light parameter and the gray scale parameter corresponding to the target screen partition.

Illustratively, the ambient light parameter indicates that the current environment is brighter, the screen is already in a high-brightness state within a target duration, brightness needs to be reduced, the ambient light parameter is acquired, and the target white balance parameter is determined in combination with the gray scale parameter of the screen partition so as to adapt to the current environment.

According to the embodiment, the brightness of the screen is adjusted more accurately by aiming at the target screen partitions in different gray scale ranges and adjusting according to different scale coefficients.

And S404, adjusting the white balance parameter of the screen to be the target white balance parameter.

In some embodiments, the brightness of the entire screen is adjusted after the target white balance parameter is obtained. For example, adjusting the target white balance parameter to 80% of the current white balance parameter decreases the screen luminance to 80% of the current luminance.

In some embodiments, after obtaining the white balance parameters of the screen partitions, the brightness of the whole screen is adjusted according to the white balance parameters of each screen partition. As shown in fig. 9, fig. 9 is a first schematic diagram of adjusting the screen brightness according to the present disclosure. In fig. 9, after determining that the white balance parameter of the screen partitions S1, S3, S7, S9 is 90%, the luminances of the screen partitions S1, S3, S7, S9 are adjusted to 90% of the current luminance as shown in (a) of fig. 9, and the current white balance parameter is 90% to 81% as shown in (b) of fig. 9. After determining that the white balance parameter of the screen sections S2, S4, S5, S6, S8 is 80%, the current white balance parameter is 100% as shown in (a) of fig. 9, and then is adjusted to 80% as shown in (b) of fig. 9, thereby implementing the split screen brightness adjustment.

In addition, adjusting the screen brightness further includes improving the screen brightness, and the target gray scale range provided in the embodiment of the present disclosure may be smaller than 60%, for example, the target gray scale range is 40% to 60%, and the viewing experience of the user is affected by the brightness for a long time.

In some embodiments, similar to the above-mentioned improvement of the screen brightness, the white balance parameter of each screen partition can be determined according to the gray scale parameter of the target screen partition and the weighting factor of each screen partition.

Illustratively, as shown in fig. 10, fig. 10 is a schematic diagram two of adjusting the screen brightness according to the present disclosure. In fig. 10, after determining that the white balance parameter of the screen sections S1, S3, S7, S9 is 40%, and determining that the white balance parameter of the screen sections S1, S3, S7, S9 is 60% before the target duration, the white balance parameter of the screen sections S1, S3, S7, S9 is adjusted to 60%, as in (a) of fig. 10, and the current white balance parameter is 40% adjusted to 60% as in (b) of fig. 10. After determining that the white balance parameter of the screen division S2, S4, S5, S6, S8 is 50%, determining that the white balance parameter of the screen division S2, S4, S5, S6, S8 is 60% before the target duration, adjusting the current white balance parameter to be 50% as shown in (a) of fig. 10 to be 60% as shown in (b) of fig. 10, and implementing the split screen restoration brightness.

In summary, the present disclosure provides a screen brightness adjusting method, which divides a screen of a display device to obtain a plurality of screen partitions, obtains a gray scale parameter of each screen partition within a target time length, and then determines a target screen partition from the plurality of screen partitions according to the gray scale parameter of each screen partition, where the target screen partition is a screen partition in which the gray scale parameter is within a target gray scale range within the target time length; further, a target white balance parameter is determined according to the gray scale parameter corresponding to the target screen partition, and finally, the screen brightness is adjusted according to the white balance parameter. The screen is partitioned to adjust the brightness, the efficiency of adjusting the brightness of the screen is improved, the brightness of the screen in the target time length is monitored to adjust the brightness in time, the screen burning phenomenon of the display equipment is prevented, and the display effect of the picture is improved.

The embodiment of the present disclosure provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the computer program implements each process of the screen brightness adjustment method in the foregoing method embodiments, and can achieve the same technical effect, and is not described herein again to avoid repetition.

The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.

It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The foregoing are merely exemplary embodiments of the present disclosure, which will enable those skilled in the art to understand or practice the present disclosure. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the disclosure. Thus, the present disclosure is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. A display device, comprising:

a display;

a controller configured to: determining a plurality of screen partitions, and acquiring gray scale parameters of each screen partition within a target duration;

determining a target screen partition from the plurality of screen partitions according to the gray scale parameters of the screen partitions, wherein the target screen partition is a screen partition with the gray scale parameters in a target gray scale range in the target duration;

determining a target white balance parameter according to the gray scale parameter of the target screen partition;

and adjusting the white balance parameter of the screen to be the target white balance parameter.

2. The display device according to claim 1, wherein the controller is configured to:

determining a weight coefficient of each screen partition in the plurality of screen partitions according to the position information of the plurality of screen partitions and/or historical display duration, wherein the historical display duration is the historical duration of each screen partition in the target gray scale range;

and determining the target white balance parameters according to the gray scale parameters of the target screen partitions and the weight coefficients of all the screen partitions.

3. The display device of claim 2, wherein the controller is further configured to: and respectively determining the white balance parameters of each screen partition according to the gray scale parameters of the target screen partition and the weight coefficients of each screen partition.

4. The display device according to claim 1, wherein the target time length and the target gray scale range are determined according to types of contents to be displayed of the plurality of screen partitions.

5. The display device of claim 1, wherein the controller is further configured to: acquiring an ambient light parameter;

the controller configured to: and determining the target white balance parameter according to the gray scale parameter of the target screen partition and the ambient light parameter.

6. The display device according to claim 1, wherein the target grayscale range is a first grayscale range, and the first grayscale range is a range greater than a first preset grayscale threshold and less than a second preset grayscale threshold;

the controller configured to:

and determining the target white balance parameter according to a first scale coefficient and the gray scale parameter of the target screen partition, wherein the first scale coefficient corresponds to the first gray scale range.

7. The display device according to claim 1, wherein the target grayscale range is a second grayscale range, and the second grayscale range is a range greater than or equal to a second preset grayscale threshold;

the controller configured to:

and determining the target white balance parameter according to a second scale coefficient and the gray scale parameter of the target screen partition, wherein the second scale coefficient corresponds to the second gray scale range.

8. The display device according to claim 1, wherein the grayscale parameter of the target screen section is the highest grayscale parameter in the respective screen sections.

9. The display device of claim 7, wherein the target gray scale range is a second gray scale range, the second gray scale range comprising at least two sub gray scale ranges, the target screen partition comprising m screen partitions, the m screen partitions being at least two of the plurality of screen partitions;

the controller configured to:

determining a first screen partition from the m screen partitions, wherein the first screen partition is a screen partition in a target sub-gray scale range in the m screen partitions;

the number of the screen partitions of the gray scale parameter in the target sub-gray scale range is greater than the number of the screen partitions in other sub-gray scale ranges, and the other sub-gray scale ranges are sub-gray scale ranges in the at least two sub-gray scale ranges except the target sub-gray scale range;

and determining the target white balance parameter according to the second scale factor and the gray scale parameter of the first screen partition.

10. A screen brightness adjusting method is characterized by comprising the following steps:

determining a plurality of screen partitions, and acquiring gray scale parameters of each screen partition within a target duration;

determining a target screen partition from the plurality of screen partitions according to the gray scale parameters of each screen partition, wherein the target screen partition is a screen partition in which the gray scale parameters are continuously in a target gray scale range within the target duration;

determining a target white balance parameter according to the gray scale parameter of the target screen partition;

and adjusting the screen brightness based on the white balance parameter of the screen.

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