CN118538184A

CN118538184A - Brightness adjusting method and device and display equipment

Info

Publication number: CN118538184A
Application number: CN202410361465.3A
Authority: CN
Inventors: 曹中涛
Original assignee: Wuhan Tianma Microelectronics Co Ltd
Current assignee: Wuhan Tianma Microelectronics Co Ltd
Priority date: 2024-03-27
Filing date: 2024-03-27
Publication date: 2024-08-23

Abstract

The application relates to a brightness adjusting method, a brightness adjusting device and display equipment. The method comprises the following steps: determining a brightness requirement level and an average pixel level of an image to be displayed; under the condition that the brightness demand level is in a preset level range, determining a maximum digital brightness interval in a highlight mode as a first target maximum brightness interval; according to the average pixel level, determining a target digital brightness value corresponding to the average pixel level from the first target maximum brightness interval; and displaying the image to be displayed according to the target digital brightness value. By adopting the method, the distortion problem caused by intercepting the gamma curve in the related technology can be avoided.

Description

Brightness adjusting method and device and display equipment

Technical Field

The present application relates to the field of display technologies, and in particular, to a brightness adjustment method, a brightness adjustment device, and a display device.

Background

The screen brightness can not be continuously improved when the screen brightness reaches a certain value under the load limit of the display panel.

The related art further improves the brightness of the display screen by: and gamma (gamma) debugging is carried out by taking the minimum brightness of the APL (Average Pixel Level ) as a target value to obtain a gray-scale brightness gamma curve, and then a part of the curve is intercepted according to the size of the APL, so that the larger the APL is, the smaller the intercepted part is.

However, the related art uses gamma curve for clipping, which easily causes distortion problem.

Disclosure of Invention

Accordingly, in view of the above-mentioned problems, it is desirable to provide a brightness adjustment method, apparatus and display device capable of avoiding distortion caused by clipping a gamma curve in the related art.

In a first aspect, the present application provides a brightness adjustment method. The method comprises the following steps:

determining a brightness requirement level and an average pixel level of an image to be displayed;

under the condition that the brightness demand level is in a preset level range, determining a maximum digital brightness interval in a highlight mode as a first target maximum brightness interval;

According to the average pixel level, determining a target digital brightness value corresponding to the average pixel level from the first target maximum brightness interval;

And displaying the image to be displayed according to the target digital brightness value.

In one embodiment, the method further comprises:

Determining a maximum digital brightness interval in a highlight mode as a second target maximum brightness interval under the condition that the brightness demand level is larger than the maximum level in the preset level range;

According to the average pixel level, determining a target digital brightness value corresponding to the average pixel level from the second target maximum brightness interval; the maximum value in the second target maximum brightness interval is greater than the maximum value in the first target maximum brightness interval.

In one embodiment, the determining of the first target maximum brightness interval and the second target maximum brightness interval includes:

Obtaining reference display brightness;

Determining a digital brightness value corresponding to the reference display brightness from a first brightness curve corresponding to the brightness demand level, taking the digital brightness value as a minimum value of the first target maximum brightness interval, and taking the maximum value of the digital brightness value in the first brightness curve as the maximum value of the first target maximum brightness interval;

And determining a digital brightness value corresponding to the reference display brightness from a second brightness curve corresponding to the brightness demand level, taking the digital brightness value as a minimum value of the second target maximum brightness interval, and taking the maximum value of the digital brightness value from the second brightness curve corresponding to the brightness demand level as the maximum value of the second target maximum brightness interval.

In one embodiment, the determining, according to the average pixel level, a target digital luminance value corresponding to the average pixel level from the first target maximum luminance interval includes:

And determining a target digital brightness value corresponding to the average pixel level from the first target maximum brightness interval according to the inverse relation between the average pixel level and the digital brightness value.

In one embodiment, the generating of the second brightness curve includes:

Acquiring a preset number of brightness binding points, wherein the preset number of brightness binding points comprise all brightness binding points in a first brightness curve and at least one brightness binding point with a digital brightness value larger than the maximum value of the digital brightness values in the first brightness curve;

And generating the second brightness curve according to the preset number of brightness binding points.

In one embodiment, the determining the brightness requirement level includes:

and responding to the brightness adjustment instruction, and acquiring the brightness requirement level in the brightness adjustment instruction.

In one embodiment, the determining the brightness requirement level includes:

And determining a corresponding brightness demand level of the ambient brightness according to the ambient brightness of the display equipment.

In one embodiment, the determining the average pixel level of the image to be displayed includes:

acquiring a brightness value and the total number of pixels corresponding to each pixel in an image to be displayed;

And calculating the average pixel level of the image to be displayed according to the brightness value corresponding to each pixel in the image to be displayed and the total number of pixels.

In a second aspect, the present application also provides a brightness adjustment device. The device comprises:

The first determining module is used for determining a brightness requirement level and an average pixel level of an image to be displayed;

The second determining module is used for determining that the maximum digital brightness interval in the highlight mode is the first target maximum brightness interval under the condition that the brightness demand level is in the preset level range;

a third determining module, configured to determine, according to the average pixel level, a target digital luminance value corresponding to the average pixel level from the first target maximum luminance interval;

And the display module is used for displaying the image to be displayed according to the target digital brightness value.

In a third aspect, the present application also provides a display apparatus. The display device comprises a memory storing a computer program and a processor which when executing the computer program performs the steps of:

The brightness adjusting method, the brightness adjusting device and the display equipment determine the brightness requirement level and the average pixel level of the image to be displayed; under the condition that the brightness demand level is in a preset level range, determining a maximum digital brightness interval in a highlight mode as a first target maximum brightness interval; according to the average pixel level, determining a target digital brightness value corresponding to the average pixel level from a first target maximum brightness interval; according to the target digital brightness value, displaying the image to be displayed, by determining the maximum digital brightness interval in the highlight mode and determining the target digital brightness value corresponding to the average pixel level from the first target maximum brightness interval according to the average pixel level, the image to be displayed is displayed, and the distortion problem caused by gamma curve interception in the related technology is avoided. Also, in the case where the brightness demand level is within the preset level range, the determination of the maximum digital brightness interval in the highlight mode is performed, ensuring that there is a sufficient brightness range to display an image under the high brightness demand.

Drawings

FIG. 1 is a schematic diagram of different APL curves in one embodiment;

FIG. 2 is a flow chart of a brightness adjustment method according to an embodiment;

FIG. 3 is a flow diagram of determining an average pixel level in one embodiment;

FIG. 4 is a diagram illustrating a first target maximum brightness interval according to one embodiment;

FIG. 5 is a flow chart of determining a target digital luminance value in one embodiment;

FIG. 6 is a diagram illustrating a second target maximum brightness interval according to one embodiment;

FIG. 7 is a flow chart of determining a first target maximum brightness interval and a second target maximum brightness interval according to one embodiment;

FIG. 8 is a flow chart illustrating generation of a second luminance profile in one embodiment;

FIG. 9 is a flowchart of a brightness adjustment method according to another embodiment;

FIG. 10 is a block diagram showing a structure of a brightness adjusting device according to an embodiment;

fig. 11 is an internal structural view of the display device in one embodiment.

Detailed Description

The present application will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present application more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application.

As described in the background section, the screen brightness cannot be further increased when the screen brightness reaches a certain value due to the load limitation of the display panel. The related art further improves the brightness of the display screen by: and gamma (gamma) debugging is carried out by taking the minimum brightness of the APL (Average Pixel Level ) as a target value to obtain a gray-scale brightness gamma curve, and then a part of the curve is intercepted according to the size of the APL, so that the larger the APL is, the smaller the intercepted part is. In particular, referring to FIG. 1, a schematic diagram of different APL curves is shown in one embodiment. APL1, APL2, and APL3 increase in order. Wherein, the smaller the APL, the longer the corresponding truncated gamma curve.

However, the gamma curve obtained by gamma debugging has certain distortion, if only a part is cut out as a new gamma curve, the distortion is more serious, and the less the cut-out is, the more serious the distortion is.

Based on the technical problems, the inventor further researches the technical scheme of the embodiment of the application. Determining a brightness requirement level and an average pixel level of an image to be displayed; under the condition that the brightness demand level is in a preset level range, determining a maximum digital brightness interval in a highlight mode as a first target maximum brightness interval; according to the average pixel level, determining a target digital brightness value corresponding to the average pixel level from a first target maximum brightness interval; and displaying the image to be displayed according to the target digital brightness value so as to avoid the distortion problem caused by intercepting the gamma curve in the related art. Also, the method can provide a more accurate and personalized brightness experience for the user.

The foregoing is the core idea of the present application, and the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. All other embodiments obtained by those skilled in the art based on the embodiments of the present application without making any inventive effort are intended to fall within the scope of the present application.

In one embodiment, as shown in fig. 2, there is provided a brightness adjustment method, which is exemplified as the method applied to a display device, including the steps of:

Step 202, determining a brightness requirement level and an average pixel level of an image to be displayed.

Wherein the brightness requirement level may be determined based on user settings, ambient light conditions, or image content. The brightness demand level may be a value or range describing the required brightness level. Specifically, the brightness demand level may receive a brightness level input by a user through a display interface, or automatically detect ambient light through a sensor and adjust the brightness demand level.

The average pixel level may be used to reflect the overall brightness level of the image. Specifically, pixel data of an image to be displayed may be analyzed, and an average pixel level of the image to be displayed may be obtained.

Step 204, determining the maximum digital brightness interval in the highlight mode as the first target maximum brightness interval when the brightness demand level is within the preset level range.

The preset level range may be set according to characteristics of the display device, user preference, or application requirements. The preset level range in the present embodiment may be a luminance level range displayed in the preliminary highlighting mode.

The first target maximum brightness interval is the maximum digital brightness interval which can be displayed under the condition that the brightness demand level is in the preset level range. The digital brightness is DBV (Digital Brightness Value). Related to the number of DBV bits that the display device is capable of supporting display. For example: an 8bit DBV may provide 256 different brightness levels (from 0 to 255) and a 10bit DBV may provide 1024 different brightness levels (from 0 to 1023). This means that the display device can adjust luminance more precisely, reduce the stepped feeling of luminance variation, and make the image smoother and more natural using a DBV of high bit.

For example, the DDIC in the display device may acquire the brightness demand level and determine whether the brightness demand level is within a preset level range, and in case the brightness demand level is within the preset level range, determine the maximum digital brightness interval in the highlight mode as the first target maximum brightness interval.

And step 206, determining a target digital brightness value corresponding to the average pixel level from the first target maximum brightness interval according to the average pixel level.

The target digital brightness value is the maximum digital brightness value which can be displayed by the image to be displayed under the average pixel level.

Illustratively, the corresponding target digital luminance value is determined from the maximum digital luminance interval in the highlight mode according to the average pixel level of the image to be displayed. In particular, the conversion from the average pixel level to the target digital luminance value may be achieved by a linear mapping or a look-up table.

And step 208, displaying the image to be displayed according to the target digital brightness value.

For example, a driving chip in a display device may display an image to be displayed based on a target digital luminance value. Specifically, the target digital luminance value is the maximum digital luminance value at which the image to be displayed can be displayed at the average pixel level.

In particular practice, the brightness demand level and environmental conditions may be continuously monitored and the brightness settings adjusted as needed during the display of the image with the target digital brightness value.

In the brightness adjustment method, the brightness demand level and the average pixel level of the image to be displayed are determined; under the condition that the brightness demand level is in a preset level range, determining a maximum digital brightness interval in a highlight mode as a first target maximum brightness interval; according to the average pixel level, determining a target digital brightness value corresponding to the average pixel level from a first target maximum brightness interval; according to the target digital brightness value, displaying the image to be displayed, by adopting the method, the target digital brightness value corresponding to the average pixel level is determined from the first target maximum brightness interval by determining the maximum digital brightness interval under the highlight mode and according to the average pixel level, so that the distortion problem caused by intercepting the gamma curve in the related technology is avoided. Also, in the case where the brightness demand level is within the preset level range, the determination of the maximum digital brightness interval in the highlight mode is performed, ensuring that there is a sufficient brightness range to display an image under the high brightness demand.

In one embodiment, the determining the brightness requirement level includes:

Illustratively, the display device may input a brightness adjustment command through a display interface (such as a button, a slider, a touch screen, etc.), where the brightness adjustment command may include a specific brightness value, a brightness increment amount, or a relative indication (such as "brighter" or "darker") of brightness adjustment, so as to obtain a corresponding brightness requirement level.

In the above embodiment, the corresponding brightness demand level is obtained by the brightness adjustment instruction, so as to ensure that the display device can adjust the display brightness according to the user's desire.

In one embodiment, the determining the brightness requirement level includes:

For example, an ambient light sensor (e.g., a photoresistor or light sensor) may be used to detect the intensity of light surrounding the display device. The ambient light sensor is typically disposed below a bezel or screen of the display device to timely inform of ambient brightness.

Specifically, the ambient brightness range may be mapped to the corresponding brightness requirement level through a pre-established mapping table. In the display panel production stage, the mapping table may be set according to characteristics of the display device, user preferences, and actual application scenarios. The mapping table may be a linear or nonlinear correspondence, for example, the brightness demand level may be lower at low ambient brightness and higher at high ambient brightness.

In specific practice, there may be a case where the display brightness adjusted according to the ambient brightness is not satisfied because the user uses the display device. The mapping relation of the brightness demand level can be continuously optimized and adjusted according to the feedback and the use habit of the user so as to provide more accurate automatic brightness adjustment.

In the above-described embodiments, the luminance output of the display device is adjusted according to the ambient brightness, thereby saving energy and reducing unnecessary luminance loss.

In one embodiment, referring to FIG. 3, a flow diagram of determining an average pixel level in one embodiment is shown. The determining of the average pixel level of the image to be displayed comprises the following steps:

step 302, obtaining a brightness value and a total number of pixels corresponding to each pixel in the image to be displayed.

For example, the display device may include an image processing unit. The brightness value corresponding to each pixel in the image to be displayed can be obtained through the image processing unit. Each pixel is typically composed of three sub-pixels of RGB (red green blue), each having a luminance value.

Step 304, calculating an average pixel level of the image to be displayed according to the brightness value and the total number of pixels corresponding to each pixel in the image to be displayed.

The average pixel level of the image to be displayed is calculated according to the brightness value corresponding to each pixel in the image to be displayed and the total number of pixels. Specifically, the luminance values of all pixels in the image to be displayed are summed and then divided by the total number of pixels to obtain the average pixel level of the image to be displayed.

In the above embodiment, the average pixel level is calculated by obtaining the brightness value of each pixel in the image to be displayed and the total number of pixels, and the corresponding target digital brightness value is determined for the subsequent average pixel level, so as to avoid the distortion problem caused by intercepting the gamma curve in the related art.

In one embodiment, step 206 includes: and determining a target digital brightness value corresponding to the average pixel level from the first target maximum brightness interval according to the inverse relation between the average pixel level and the digital brightness value.

Wherein the inverse relationship between the average pixel level and the digital luminance value is such that when the average pixel level increases, the target digital luminance value decreases and vice versa. The target digital luminance value is the maximum digital luminance value corresponding to the average pixel level in the first target maximum luminance interval.

In specific practice, the first target maximum brightness interval may be an interval value preset corresponding to a preset brightness level, which represents a maximum digital brightness interval that can be used in the highlight mode. The first target maximum brightness interval is obtained by debugging based on a brightness dimming curve when the display panel is produced. Specifically, based on the user demand, a corresponding display luminance value in the highlight mode is acquired. When the display brightness of the display panel is regulated and controlled, a display brightness value corresponding to the highlight mode is obtained, so that the upper limit and the lower limit of the first target maximum brightness interval are determined.

In particular, referring to FIG. 4, a schematic diagram of a first target maximum luminance interval in one embodiment is shown. Wherein the first target maximum brightness interval is。The corresponding digital brightness value is the minimum digital brightness value corresponding to the preset grade range. When APL is minimum, the corresponding maximum digital brightness value is; When APL is maximum, the corresponding maximum digital brightness value is。

In specific practice, the screen brightness cannot be further increased when reaching a certain value, limited by the load of the display panel. Through the inverse relation between the average pixel level and the digital brightness value, when the average pixel level of the image to be displayed is lower, namely the overall brightness of the image to be displayed is darker, a higher target digital brightness value can be determined based on the first target maximum brightness interval; when the average pixel level of the image to be displayed is higher, that is, the overall brightness of the image to be displayed is brighter, a lower target digital brightness value can be determined based on the first target maximum brightness interval, so that the visibility of the continuously displayed images can be in a relatively stable degree when multi-frame image display is performed, and the display effect of the display panel is improved.

In the above embodiment, according to the inverse relation between the average pixel level and the digital luminance value, the target digital luminance value corresponding to the average pixel level is determined from the first target maximum luminance interval, so that the distortion problem caused by intercepting the gamma curve in the related art is avoided.

In one embodiment, referring to FIG. 5, a flow chart of determining a target digital luminance value in another embodiment is shown. The method further comprises the steps of:

Step 502, determining a maximum digital brightness interval in the highlight mode as a second target maximum brightness interval when the brightness demand level is greater than the maximum level in the preset level range.

The second target maximum brightness interval may be a preset brightness interval value corresponding to a higher level than the preset level range, and represents a maximum digital brightness interval that can be used in the highest brightness display mode.

In specific practice, the second target maximum brightness interval is obtained by debugging based on a brightness dimming curve when the second target maximum brightness interval is produced on the display panel. Specifically, based on the user demand, the corresponding display luminance value in the highest display mode is acquired. And starting the DBV function of high bit capable of being supported by the display equipment. And when the display brightness of the display panel is regulated and controlled, obtaining a display brightness value corresponding to the highest brightness display mode so as to determine the upper limit and the lower limit of the second target maximum brightness interval. For example, in the case where the high bit supported by the display device is 12 bits, the DBV of the corresponding dimming curve is 0 to 4095.

For example, the brightness demand level may be obtained, and it may be determined whether the brightness demand level is within a preset level range, and in the case where the brightness demand level is greater than the maximum level in the preset level range, the maximum digital brightness interval in the highlight mode is determined as the second target maximum brightness interval.

Step 504, determining a target digital brightness value corresponding to the average pixel level from the second target maximum brightness interval according to the average pixel level; the maximum value in the second target maximum brightness interval is greater than the maximum value in the first target maximum brightness interval.

The maximum value in the second target maximum brightness interval is larger than the maximum value in the first target maximum brightness interval, so that the range of dynamic brightness adjustment of the display device is widened, and the display device can process wider brightness requirements, so that the display device is suitable for more different environments and application scenes.

Illustratively, from the second target maximum luminance interval, a target digital luminance value corresponding to the average pixel level is determined from the average pixel level. Specifically, a target digital luminance value corresponding to the average pixel level is determined from the second target maximum luminance interval according to an inverse relationship between the average pixel level and the digital luminance value.

In particular, referring to fig. 6, a schematic diagram of a second target maximum brightness interval in another embodiment is shown. Wherein the second target maximum brightness interval is；The corresponding digital luminance value is the minimum digital luminance value corresponding to the highest display mode. For the second target brightness interval, when the APL is minimum, the corresponding maximum digital brightness value is; When APL is maximum, the corresponding maximum digital brightness value is。

In specific practice, the screen brightness cannot be further increased when reaching a certain value, limited by the load of the display panel. At this time, the function of the highest bit DBV of the display device can be started. Through the inverse relation between the average pixel level and the digital brightness value, when the average pixel level of the image to be displayed is lower, namely the overall brightness of the image to be displayed is darker, a higher target digital brightness value can be determined based on the second target maximum brightness interval; when the average pixel level of the image to be displayed is higher, that is, the overall brightness of the image to be displayed is brighter, a lower target digital brightness value can be determined based on the second target maximum brightness interval, so that the visibility of the continuously displayed images can be in a relatively stable degree when multi-frame image display is performed, and the display effect of the display panel is improved.

In the above-described embodiment, the automatic switching to the higher-brightness mode is performed according to the brightness demand level, ensuring that sufficient brightness is provided under various illumination conditions, thereby maintaining the visibility and definition of the image. And determining a target digital brightness value corresponding to the average pixel level from the second target maximum brightness interval according to the average pixel level, so as to avoid the distortion problem caused by intercepting the gamma curve in the related art.

In one embodiment, referring to FIG. 7, a flow diagram of determining a first target maximum brightness interval and a second target maximum brightness interval in one embodiment is shown; the determining process of the first target maximum brightness interval and the second target maximum brightness interval comprises the following steps:

Step 702, obtaining a reference display luminance.

Wherein the reference display brightness value may be determined according to a default setting of the display device, a user preference or some criterion. In particular practice, the size to which the reference display brightness corresponds may be determined based on customer requirements. As shown in FIG. 4 or FIG. 6, the reference display luminance can be usedAnd (3) representing.

And step 704, determining a digital brightness value corresponding to the reference display brightness from a first brightness curve corresponding to the brightness demand level, taking the digital brightness value as a minimum value of the first target maximum brightness interval, and taking the maximum value of the digital brightness value in the first brightness curve as the maximum value of the first target maximum brightness interval.

Wherein the abscissa of the first brightness curve is a digital brightness value, and the corresponding interval is; The ordinate is the display brightness value, and the corresponding interval is。

Illustratively, according to the current brightness demand level, a digital brightness value corresponding to the reference display brightness is determined from a preset first brightness curve, and the value is taken as the minimum value of the first target maximum brightness interval. And taking the maximum value of the digital brightness value in the first brightness curve as the maximum value of the first target maximum brightness interval.

In specific practice, the display brightness corresponding to the maximum value of the digital brightness values in the first brightness curve may be determined by a preset gain value. The preset gain value may be determined based on customer demand. Specifically, as shown in fig. 4, the abscissa of the first brightness curve is a digital brightness value, and the corresponding interval is; The ordinate is the display brightness value, and the corresponding interval is. Reference display brightness can be usedA representation; the preset gain value may be represented by a being greater than 1; the display brightness corresponding to the maximum value of the digital brightness values in the first brightness curve can pass throughAnd (3) representing. The corresponding first target maximum brightness interval is. In the display mode corresponding to the preset level range, when APL changes, the corresponding HBM adjustable interval is in the range ofTo the point ofDynamic change, wherein when APL is minimum, the corresponding DBV value is DBV1, and the brightness reaches the peak brightness。

Specifically, in the production stage of the display panel, a certain number of binding points can be selected, and a binding point exists in the binding points correspondingly, wherein the corresponding digital brightness value is the current maximum digital brightness value. And debugging each binding point to obtain a digital brightness value and a display brightness value corresponding to each binding point, so that the binding points are fitted to obtain a first brightness curve.

And step 706, determining a digital brightness value corresponding to the reference display brightness from the second brightness curve corresponding to the brightness demand level, and taking the maximum value of the digital brightness value from the second brightness curve corresponding to the brightness demand level as the maximum value of the second target maximum brightness interval as the minimum value of the second target maximum brightness interval.

Illustratively, according to the current brightness demand level, a digital brightness value corresponding to the reference display brightness is determined from a preset second brightness curve, and the digital brightness value is taken as the minimum value of the second target maximum brightness interval. And taking the maximum value of the digital brightness value in the second brightness curve as the maximum value of the second target maximum brightness interval.

In specific practice, the display luminance value corresponding to the maximum value of the digital luminance values in the second luminance curve is determined based on the customer demand, and the display luminance value corresponding to the maximum value of the digital luminance values in the second luminance curve is greater than the maximum value of the display luminance values in the first luminance curve. Specifically, as shown in fig. 6, the abscissa of the second brightness curve is a digital brightness value, and the corresponding interval is; The ordinate is the display brightness value, and the corresponding interval is. Wherein,Greater than；Greater than; Reference display brightness can be usedA representation; the second target maximum brightness interval is. In the case where the brightness demand level is greater than the maximum level in the preset level range, when the APL is changed, the corresponding HBM (High Brightness Mode, highlight mode) adjustable section is inTo the point ofDynamic change, wherein when APL is minimum, the corresponding DBV value is DBV0, and the brightness reaches the peak brightness。

In the above embodiment, the maximum value of the second target maximum luminance section is larger than the maximum value of the first target maximum luminance section, which means that in the highlight mode, a higher luminance output can be provided to accommodate a stronger luminance demand.

In one embodiment, referring to FIG. 8, a flow diagram of the generation of a second luminance profile is shown. The generation process of the second brightness curve comprises the following steps:

Step 802, obtaining a preset number of brightness binding points, wherein the preset number of brightness binding points comprise all brightness binding points in a first brightness curve and at least one brightness binding point with a digital brightness value larger than the maximum value of the digital brightness values in the first brightness curve;

step 804, generating the second brightness curve according to the preset number of brightness binding points.

Wherein the second luminance profile is typically used for higher luminance modes. The second luminance curve is generated based on a preset number of luminance binding points. At least one brightness binding point with a digital brightness value larger than the maximum value of the digital brightness values in the first brightness curve exists in the preset number of brightness binding points. For each luminance binding point, a corresponding digital luminance value and display luminance value are included. Specifically, the size of the preset number may be determined based on the actual situation.

Illustratively, the generating of the second luminance profile may include: acquiring a preset number of brightness binding points; and generating a second brightness curve by adopting a mathematical interpolation or fitting algorithm according to the preset number of brightness binding points. In particular, a smooth transition of the second luminance curve should be ensured by interpolation or fitting algorithms.

In the above embodiment, the second luminance profile can provide a higher luminance output in the higher luminance mode by adding the binding point where the digital luminance value is larger than the maximum value of the first luminance profile.

For a better understanding of the brightness adjustment process, an example is described, referring to fig. 9, which shows a schematic flow chart of yet another brightness adjustment method.

Step 902, responding to a brightness adjustment instruction, and obtaining a brightness demand level in the brightness adjustment instruction; or determining a corresponding brightness demand level of the ambient brightness according to the ambient brightness of the display device.

Step 904, obtaining a brightness value and a total number of pixels corresponding to each pixel in the image to be displayed; and calculating the average pixel level of the image to be displayed according to the brightness value corresponding to each pixel in the image to be displayed and the total number of pixels.

Step 906, determining the maximum digital brightness interval in the highlight mode as the first target maximum brightness interval when the brightness demand level is within the preset level range.

And determining a digital brightness value corresponding to the reference display brightness from a first brightness curve corresponding to the brightness demand level, taking the digital brightness value as a minimum value of a first target maximum brightness interval, and taking the maximum value of the digital brightness value in the first brightness curve as the maximum value of the first target maximum brightness interval.

Step 908, determining a target digital luminance value corresponding to the average pixel level from the first target maximum luminance interval according to an inverse relationship between the average pixel level and the digital luminance value.

In step 910, in the case that the brightness requirement level is greater than the maximum level in the preset level range, the maximum digital brightness interval in the highlight mode is determined as the second target maximum brightness interval.

And determining a digital brightness value corresponding to the reference display brightness from the second brightness curve corresponding to the brightness demand level, taking the digital brightness value as the minimum value of the second target maximum brightness interval, and taking the maximum value of the digital brightness value from the second brightness curve corresponding to the brightness demand level as the maximum value of the second target maximum brightness interval.

Specifically, a preset number of brightness binding points are obtained, wherein the preset number of brightness binding points comprise all brightness binding points in a first brightness curve and at least one brightness binding point with a digital brightness value larger than the maximum value of the digital brightness values in the first brightness curve; and generating a second brightness curve according to the preset number of brightness binding points.

In step 912, a target digital luminance value corresponding to the average pixel level is determined from the second target maximum luminance interval according to the inverse relationship between the average pixel level and the digital luminance value.

Wherein the maximum value in the second target maximum luminance section is greater than the maximum value in the first target maximum luminance section.

Step 914, displaying the image to be displayed according to the target digital brightness value.

In this embodiment, a brightness requirement level and an average pixel level of an image to be displayed are determined; under the condition that the brightness demand level is in a preset level range, determining a maximum digital brightness interval in a highlight mode as a first target maximum brightness interval; according to the average pixel level, determining a target digital brightness value corresponding to the average pixel level from a first target maximum brightness interval; according to the target digital brightness value, displaying the image to be displayed, by adopting the method, the target digital brightness value corresponding to the average pixel level is determined from the first target maximum brightness interval by determining the maximum digital brightness interval under the highlight mode and according to the average pixel level, so that the distortion problem caused by intercepting the gamma curve in the related technology is avoided. Also, in the case where the brightness demand level is within the preset level range, the determination of the maximum digital brightness interval in the highlight mode is performed, ensuring that there is a sufficient brightness range to display an image under the high brightness demand.

It should be understood that, although the steps in the flowcharts related to the embodiments described above are sequentially shown as indicated by arrows, these steps are not necessarily sequentially performed in the order indicated by the arrows. The steps are not strictly limited to the order of execution unless explicitly recited herein, and the steps may be executed in other orders. Moreover, at least some of the steps in the flowcharts described in the above embodiments may include a plurality of steps or a plurality of stages, which are not necessarily performed at the same time, but may be performed at different times, and the order of the steps or stages is not necessarily performed sequentially, but may be performed alternately or alternately with at least some of the other steps or stages.

Based on the same inventive concept, the embodiment of the application also provides a brightness adjusting device for realizing the brightness adjusting method. The implementation of the solution provided by the device is similar to that described in the above method, so the specific limitation of one or more embodiments of the brightness adjustment device provided below may be referred to the limitation of the brightness adjustment method hereinabove, and will not be repeated here.

In one embodiment, as shown in fig. 10, there is provided a brightness adjusting apparatus comprising: a first determination module 1002, a second determination module 1004, a third determination module 1006, and a display module 1008, wherein:

A first determining module 1002 is configured to determine a brightness requirement level and an average pixel level of an image to be displayed.

The second determining module 1004 is configured to determine, when the brightness requirement level is within a preset level range, a maximum digital brightness interval in the highlight mode as a first target maximum brightness interval.

A third determining module 1006, configured to determine, according to the average pixel level, a target digital luminance value corresponding to the average pixel level from the first target maximum luminance interval.

And the display module 1008 is used for displaying the image to be displayed according to the target digital brightness value.

In some embodiments, the brightness adjustment device further comprises:

A fourth determining module, configured to determine, when the brightness demand level is greater than the maximum level in the preset level range, a maximum digital brightness interval in the highlight mode as a second target maximum brightness interval;

A fifth determining module, configured to determine, according to the average pixel level, a target digital luminance value corresponding to the average pixel level from the second target maximum luminance interval; the maximum value in the second target maximum brightness interval is greater than the maximum value in the first target maximum brightness interval.

In some embodiments, the brightness adjustment device further comprises:

the reference acquisition module is used for acquiring reference display brightness;

The first section determining module is used for determining a digital brightness value corresponding to the reference display brightness from a first brightness curve corresponding to the brightness demand level, taking the digital brightness value as a minimum value of the first target maximum brightness section, and taking the maximum value of the digital brightness value in the first brightness curve as the maximum value of the first target maximum brightness section;

and the second section determining module is used for determining a digital brightness value corresponding to the reference display brightness from a second brightness curve corresponding to the brightness demand level, taking the digital brightness value as a minimum value of the second target maximum brightness section, and taking the maximum value of the digital brightness value from the second brightness curve corresponding to the brightness demand level as the maximum value of the second target maximum brightness section.

In some embodiments, the third determination module 1006 includes:

And the determining unit is used for determining a target digital brightness value corresponding to the average pixel level from the first target maximum brightness interval according to the inverse relation between the average pixel level and the digital brightness value.

In some embodiments, the brightness adjustment device further comprises:

The binding point acquisition module is used for acquiring a preset number of brightness binding points, wherein the preset number of brightness binding points comprise all brightness binding points in a first brightness curve and at least one brightness binding point with a digital brightness value larger than the maximum value of the digital brightness values in the first brightness curve;

and the curve generation module is used for generating the second brightness curve according to the preset number of brightness binding points.

In some embodiments, the first determining module 1002 is configured to obtain, in response to a brightness adjustment instruction, a brightness requirement level in the brightness adjustment instruction.

In some embodiments, the first determining module 1002 is configured to determine, according to an ambient brightness of the display device, a brightness requirement level corresponding to the ambient brightness.

In some embodiments, the first determining module 1002 includes:

The pixel acquisition unit is used for acquiring a brightness value and the total number of pixels corresponding to each pixel in the image to be displayed;

and the pixel level calculating unit is used for calculating the average pixel level of the image to be displayed according to the brightness value corresponding to each pixel in the image to be displayed and the total number of pixels.

The respective modules in the above-described brightness adjustment device may be implemented in whole or in part by software, hardware, and combinations thereof. The above modules may be embedded in hardware or may be independent of a processor in the display device, or may be stored in software in a memory in the display device, so that the processor may call and execute operations corresponding to the above modules.

In one embodiment, a display device is provided, which may be a server, and an internal structure thereof may be as shown in fig. 11. The display device includes a processor, a memory, an Input/Output interface (I/O) and a communication interface. The processor, the memory and the input/output interface are connected through a system bus, and the communication interface is connected to the system bus through the input/output interface. Wherein the processor of the display device is configured to provide computing and control capabilities. The memory of the display device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, computer programs, and a database. The internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage media. The database of the display device is used for storing a first brightness curve, a second brightness curve and a reference display brightness. The input/output interface of the display device is used to exchange information between the processor and the external device. The communication interface of the display device is used for communicating with an external terminal through a network connection. The computer program is executed by a processor to implement a brightness adjustment method.

The display unit of the display device is used for forming a visual picture, and can be a display screen, a projection device or a virtual reality imaging device. The display screen can be a liquid crystal display screen or an electronic ink display screen, and the input device of the display device can be a touch layer covered on the display screen, can also be keys, a track ball or a touch pad arranged on the shell of the display device, and can also be an external keyboard, a touch pad or a mouse and the like.

It will be appreciated by those skilled in the art that the structure shown in fig. 11 is merely a block diagram of a portion of the structure associated with the present inventive arrangements and is not limiting of the display device to which the present inventive arrangements are applied, and that a particular display device may include more or fewer components than shown, or may combine some of the components, or have a different arrangement of components.

In one embodiment, a display device is provided comprising a memory and a processor, the memory having stored therein a computer program, the processor when executing the computer program performing the steps of:

In one embodiment, the processor when executing the computer program further performs the steps of:

Obtaining reference display brightness;

It should be noted that, the user information (including but not limited to user equipment information, user personal information, etc.) and the data (including but not limited to data for analysis, stored data, presented data, etc.) related to the present application are information and data authorized by the user or sufficiently authorized by each party, and the collection, use and processing of the related data need to comply with the related laws and regulations and standards of the related country and region.

Those skilled in the art will appreciate that implementing all or part of the above described methods may be accomplished by way of a computer program stored on a non-transitory computer readable storage medium, which when executed, may comprise the steps of the embodiments of the methods described above. Any reference to memory, database, or other medium used in embodiments provided herein may include at least one of non-volatile and volatile memory. The nonvolatile Memory may include Read-Only Memory (ROM), magnetic tape, floppy disk, flash Memory, optical Memory, high density embedded nonvolatile Memory, resistive random access Memory (ReRAM), magneto-resistive random access Memory (Magnetoresistive Random Access Memory, MRAM), ferroelectric Memory (Ferroelectric Random Access Memory, FRAM), phase change Memory (PHASE CHANGE Memory, PCM), graphene Memory, and the like. Volatile memory can include random access memory (Random Access Memory, RAM) or external cache memory, and the like. By way of illustration, and not limitation, RAM can be in various forms such as static random access memory (Static Random Access Memory, SRAM) or dynamic random access memory (Dynamic Random Access Memory, DRAM), etc. The databases referred to in the embodiments provided herein may include at least one of a relational database and a non-relational database. The non-relational database may include, but is not limited to, a blockchain-based distributed database, and the like. The processor referred to in the embodiments provided in the present application may be a general-purpose processor, a central processing unit, a graphics processor, a digital signal processor, a programmable logic unit, a data processing logic unit based on quantum computing, or the like, but is not limited thereto.

The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The foregoing examples illustrate only a few embodiments of the application and are described in detail herein without thereby limiting the scope of the application. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of the application should be assessed as that of the appended claims.

Claims

1. A method of brightness adjustment, the method comprising:

2. The method according to claim 1, wherein the method further comprises:

3. The method of claim 2, wherein the determining of the first target maximum brightness interval and the second target maximum brightness interval comprises:

Obtaining reference display brightness;

4. A method according to claim 3, wherein said determining, from said first target maximum luminance interval, a target digital luminance value corresponding to said average pixel level from said average pixel level comprises:

5. A method according to claim 3, wherein the generation of the second luminance profile comprises:

6. The method of claim 1, wherein the determining of the brightness demand level comprises:

7. The method of claim 1, wherein the determining of the brightness demand level comprises:

8. The method of claim 1, wherein the determining of the average pixel level of the image to be displayed comprises:

9. A brightness adjustment device, the device comprising:

10. A display device comprising a memory and a processor, the memory storing a computer program, characterized in that the processor implements the steps of the method of any of claims 1 to 8 when the computer program is executed.