CN116798355A - Display device, display device brightness adjustment method, electronic equipment and storage medium - Google Patents
Display device, display device brightness adjustment method, electronic equipment and storage medium Download PDFInfo
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- CN116798355A CN116798355A CN202310797699.8A CN202310797699A CN116798355A CN 116798355 A CN116798355 A CN 116798355A CN 202310797699 A CN202310797699 A CN 202310797699A CN 116798355 A CN116798355 A CN 116798355A
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/2007—Display of intermediate tones
- G09G3/2074—Display of intermediate tones using sub-pixels
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/06—Adjustment of display parameters
- G09G2320/0626—Adjustment of display parameters for control of overall brightness
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Abstract
The application discloses a display device, a display device brightness adjusting method, electronic equipment and a computer readable storage medium, wherein the display device brightness adjusting method comprises the following steps: determining the brightness of each sub-pixel of the target pixel according to the gray scale of the target pixel in the display device; acquiring a predetermined power consumption coefficient, and determining the brightness of a target pixel according to the brightness of each sub-pixel and the power consumption coefficient, wherein the power consumption coefficient corresponds to the actual power consumption of the sub-pixel under gray scale; and determining a brightness adjustment ratio based on the brightness sum and a preset mapping relation, and adjusting the brightness of the display device according to the brightness adjustment ratio, wherein the brightness sum is the sum of the brightness determined by each target pixel in the display device, and the preset mapping relation is the corresponding relation between the brightness sum and the brightness adjustment ratio. The calculated brightness of the display device and the actual brightness sum of the calculated brightness are smaller, and the deviation of the determined brightness adjustment proportion is smaller, so that the brightness adjustment effect of the display device is improved.
Description
Technical Field
The present application relates to a display device brightness adjustment technology, and more particularly, to a display device, a display device brightness adjustment method, an electronic apparatus, and a computer-readable storage medium.
Background
The display device is a device for displaying images and colors, and is widely applied to devices with image or text display functions such as mobile phones, computers, monitors, televisions and the like.
Taking a display device as an example of a screen, the brightness of the screen can influence the power consumption of the screen, the larger the brightness is, the larger the power consumption is, the brightness of the screen is required to be regulated, in the related technology, firstly, the brightness sum obtained by adding the brightness of all the pixels of the full screen is calculated, then the regulation proportion (Ratio) of the brightness sum is determined through the calculated brightness sum and a preset mapping relation, wherein the preset mapping relation refers to the brightness sum and the preset corresponding relation of the Ratio, finally, the brightness sum of all the pixels of the full screen is regulated through the determined Ratio, one pixel in the screen usually has the combination of four types of sub-pixels such as red sub-pixel (R), green sub-pixel (G), blue sub-pixel (B) and white sub-pixel (W), the brightness of one pixel is obtained by adding the brightness of all the sub-pixels, the brightness of the sub-pixels is obtained by converting the gray scales of the sub-pixels, the same gray scales correspond to the same brightness, namely, under the pixels of the same gray scales are converted according to the same gray scales, and the actual brightness of the same gray scales is different from the actual brightness of the full screen, and the brightness difference is larger than the actual brightness of the full-screen is calculated, and the difference between the brightness of the gray scales is larger.
Disclosure of Invention
In view of the above technical problems, the present application provides a display device, a brightness adjustment method for the display device, an electronic apparatus, and a computer readable storage medium, wherein the technical scheme is as follows:
according to a first aspect of the present application, there is provided a display device comprising a brightness adjustment assembly for adjusting the brightness of the display device;
the brightness adjustment assembly is used for: determining the brightness of each sub-pixel of a target pixel in the display device according to the gray scale of the target pixel, wherein the target pixel is any pixel in the display device; acquiring a predetermined power consumption coefficient, and determining the brightness of the target pixel according to the brightness of each sub-pixel and the power consumption coefficient, wherein the power consumption coefficient corresponds to the actual power consumption of the sub-pixel under the gray scale; and determining a brightness adjustment ratio based on a brightness sum and a preset mapping relation, and adjusting the brightness of the display device according to the brightness adjustment ratio, wherein the brightness sum is the sum of the brightness determined by each target pixel in the display device, the brightness determined by each target pixel is the brightness of the same frame, and the preset mapping relation is the corresponding relation between the brightness sum and the brightness adjustment ratio.
According to a second aspect of the present application, there is provided a display device brightness adjustment method, the method comprising:
determining the brightness of each sub-pixel of a target pixel in a display device according to the gray scale of the target pixel, wherein the target pixel is any pixel in the display device;
acquiring a predetermined power consumption coefficient, and determining the brightness of the target pixel according to the brightness of each sub-pixel and the power consumption coefficient, wherein the power consumption coefficient corresponds to the actual power consumption of the sub-pixel under the gray scale;
and determining a brightness adjustment ratio based on a brightness sum and a preset mapping relation, and adjusting the brightness of the display device according to the brightness adjustment ratio, wherein the brightness sum is the sum of the brightness determined by each target pixel in the display device, the brightness determined by each target pixel is the brightness of the same frame, and the preset mapping relation is the corresponding relation between the brightness sum and the brightness adjustment ratio.
According to a third aspect of the present application, there is provided an electronic device comprising:
a processor;
a memory for storing processor-executable instructions;
wherein the processor is configured to implement the method as described in the second aspect.
According to a fourth aspect of the present application there is provided a computer readable storage medium having stored thereon a computer program which when executed by a processor performs the steps of the method according to the second aspect.
According to the technical scheme provided by the application, after the brightness of each sub-pixel obtained by conversion according to the same gray level is determined under the target pixel of the same gray level, the power consumption coefficient corresponding to the actual power consumption of each sub-pixel under the gray level is obtained, so that the brightness of the target pixel is determined under the same gray level through the brightness of each sub-pixel obtained by conversion according to the gray level and the power consumption coefficient corresponding to each sub-pixel, and the corresponding actual power consumption is different because the actual brightness of each sub-pixel under the same gray level is different, when the brightness sum of each target pixel of the display device is calculated, the different power consumption coefficients of different types of sub-pixels under the same gray level are introduced, so that the calculated brightness of the display device and the actual brightness sum of the difference of the calculated brightness and the calculated difference of the calculated brightness of the calculated display device are smaller, and the determined brightness adjustment proportion deviation is smaller, and the brightness adjustment effect of the display device is improved.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application as claimed.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the related art, the drawings required for the embodiments or the related technical descriptions will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments described in the present application, and other drawings may be obtained according to the drawings for those skilled in the art.
FIG. 1 is a schematic diagram of a related art screen pixel scene;
FIG. 2 is a flow chart of a method for adjusting brightness of a display device according to the present application;
FIG. 3 is a schematic diagram of a preset mapping relationship according to an embodiment of the present application;
FIG. 4 is a schematic diagram of a preset mapping relationship according to an embodiment of the present application;
fig. 5 is a schematic structural view of a display device according to an embodiment of the present application;
fig. 6 is a schematic structural diagram of an electronic device according to an embodiment of the present application.
Detailed Description
In order that those skilled in the art will better understand the technical solutions of the present application, the following detailed description of the technical solutions of the embodiments of the present application will be given with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which are derived by a person skilled in the art based on the embodiments of the application, shall fall within the scope of protection of the application.
Referring to fig. 1, taking a display device as an example of a screen, firstly, an exemplary description is given of a screen pixel scene, where the screen is a device for displaying images and colors, and is widely applied to devices with image or text display functions such as mobile phones, computers, monitors, televisions, and the like.
The larger the brightness is, the larger the power consumption is, the brightness of the screen is required to be regulated, in the related technology, the brightness sum obtained by adding the brightness of all the pixels of the whole screen is calculated, then the regulation proportion (Ratio) of the brightness sum is determined through the calculated brightness sum and a preset mapping relation, wherein the preset mapping relation refers to the preset corresponding relation between the brightness sum and the Ratio, finally the brightness sum of all the pixels of the whole screen is regulated through the determined Ratio, one pixel in the screen usually has the combination of four types of sub-pixels such as red sub-pixel (R), green sub-pixel (G), blue sub-pixel (B) and white sub-pixel (W), for example, an OLED display device is adopted, the brightness of one pixel is obtained by adding the brightness of all the sub-pixels, the brightness of the sub-pixels is obtained by converting the gray scale of the sub-pixels, the same gray scale corresponds to the same brightness, namely, the brightness of all the sub-pixels are the same according to the gray scale of the same gray scale, however, the brightness difference between the brightness of all the sub-pixels is larger than the actual brightness difference between the brightness of the full screen is calculated according to the actual brightness difference between the gray scale and the gray scale of the same gray scale, and the actual brightness difference is larger.
Taking fig. 1 as an example, assuming that there are 6 pixels (pixel 1, pixel 2, pixel 3, pixel 4, pixel 5, and pixel 6) in a screen, in the related art, when the brightness of the screen needs to be adjusted, the brightness sum obtained by adding the brightness of each pixel of the full screen (for example, adding the brightness of the pixels 1-6 in fig. 1) is calculated first, then the adjustment Ratio (Ratio) of the brightness sum is determined through the calculated brightness sum and a preset mapping relationship, where the preset mapping relationship refers to the brightness sum and the preset mapping relationship of the Ratio, finally, the brightness sum of each pixel of the full screen (for example, the pixels 1-6 in fig. 1) is adjusted through the determined Ratio, and there is often a combination of four types of sub-pixels, such as a red sub-pixel (R), a green sub-pixel (G), a blue sub-pixel (B) and a white sub-pixel (W), taking pixel 1 in fig. 1 as an example, assuming that two sub-pixels exist in each pixel, for example, sub-pixel 11, sub-pixel 12 exist in pixel 1, sub-pixel 21, sub-pixel 22 exist in pixel 2, sub-pixel 31, sub-pixel 32 exist in pixel 3, sub-pixel 41, sub-pixel 42 exist in pixel 4, sub-pixel 51, sub-pixel 52 exist in pixel 5, sub-pixel 61, sub-pixel 62 exist in pixel 6, taking pixel 1 as an example, sub-pixel 11, sub-pixel 12 may be a combination of any two types of sub-pixels of four types of red sub-pixel (R), green sub-pixel (G), blue sub-pixel (B) and white sub-pixel (W), for example, the sub-pixel 11 is of a red sub-pixel (R) type, the sub-pixel 12 is of a blue sub-pixel (B) type, or the sub-pixel 11 is of a blue sub-pixel (B) type, the sub-pixel 12 is of a white sub-pixel (W) type, etc., the pixels 2 to 6 are also similar to the pixel 1, wherein the sub-pixel of any one pixel may be a combination of any two of the four types of sub-pixels of the red sub-pixel (R), the green sub-pixel (G), the blue sub-pixel (B) and the white sub-pixel (W), and the luminance of one pixel is obtained by adding the luminances of the respective sub-pixels (for example, the luminance of the pixel 1 is obtained by adding the luminances of the sub-pixel 11 and the sub-pixel 12), the luminance of the sub-pixels is obtained by converting the gray levels of the sub-pixels, and the same gray levels correspond to the same luminance, that is, the luminance obtained by converting each sub-pixel according to the same gray level is the same in the pixels of the same gray level (for example, the luminance of the sub-pixels 11 and 12 is obtained by converting the gray levels of the pixels 1, the luminance of the sub-pixels 11 and 12 is the same), however, the actual luminance of each sub-pixel is different in the same gray level (for example, the luminance of the sub-pixels 11 and 12 is different in practice), the difference between the full-screen luminance calculated according to the above related art and the sum of the actual luminance of the full-screen is large, the determined Ratio deviation is large, and the screen luminance adjusting effect is poor. In an actual scene, the number of pixels included in the screen is not limited to 6 in fig. 1, and in practice, the number of pixels included in the screen may be far more than 6, and the number of sub-pixels included in each pixel is not limited to two, but may be 1, 3, 4, or the like, which is not particularly limited.
It should be noted that, the description of the screen pixel scene is only exemplary, and in practical application, other application scenes are not excluded, and the display device is not limited to the screen, which is not limited to the specific example.
In view of the above problems, the present application provides a method for adjusting brightness of a display device, which can make the calculated brightness sum of the display device and the actual brightness sum of the display device smaller, and the determined brightness adjustment ratio deviation smaller, thereby improving the brightness adjustment effect of the display device. As shown in fig. 2, the method comprises the steps of:
s201, determining the brightness of each sub-pixel of a target pixel in a display device according to the gray scale of the target pixel, wherein the target pixel is any pixel in the display device;
as an example, the display device may be a screen.
As an example, the display device may be an Organic Light-Emitting Diode (OLED) screen.
As an example, when the display device is an OLED screen, it may be a 95 inch 8K OLED screen, and it should be noted that the description of the types of display devices is only exemplary, and in practical applications, other types of display devices are not excluded, and the types of display devices are not particularly limited.
As an example, the target pixel may include 1 or more sub-pixels, such as 2, 3, or 4 sub-pixels, which is not particularly limited.
The gray level of the target pixel is the same gray level where each sub-pixel of the target pixel is located.
It should be noted that when the sub-pixels of different types are at the same gray level, the brightness values obtained by converting the gray levels of the sub-pixels are the same.
S202, acquiring a predetermined power consumption coefficient, and determining the brightness of the target pixel according to the brightness of each sub-pixel and the power consumption coefficient, wherein the power consumption coefficient corresponds to the actual power consumption of the sub-pixel under the gray scale;
the actual power consumption described above may be obtained in a variety of ways, one of which may include, as an example: the actual power consumption is obtained by testing the actual power consumption of different types of sub-pixels under different gray scales.
The above-described power consumption coefficient may be determined in various ways, and one of the ways may include, as an example: determining a gray scale range to be tested, and determining a target number of gray scale nodes in the gray scale range to be tested; dividing the gray scale range to be tested into the gray scale segments of the target number based on the gray scale nodes, wherein the gray scale segments correspond to the gray scale nodes; and determining a group of power consumption coefficients corresponding to each gray scale segment based on the actual power consumption of the sub-pixels of different types under each gray scale node, wherein different gray scale values in each gray scale segment correspond to the same group of power consumption coefficients, and each group of power consumption coefficients corresponds to the actual power consumption of the sub-pixels of different types.
The types of the sub-pixels may be various, and examples thereof include a red sub-pixel (R), a green sub-pixel (G), a blue sub-pixel (B), and a white sub-pixel (W), and the types of the sub-pixels are not particularly limited.
The above-described determination method of the actual power consumption and the power consumption coefficient is exemplified as follows:
firstly, determining a Gray Level (GL) range to be tested, for example, the gray level range to be tested may be GL0 to GL1023, determining a target number of gray level nodes in the range of GL0 to GL1023, and assuming that the target number is 12, determining 12 gray level nodes: the gray scale range to be tested, GL 0-GL 1023, is divided into a target number (i.e. the 12 gray scale segments) based on the 12 gray scale node gray scale nodes of GL128, GL256, GL384, GL512, GL576, GL640, GL704, GL768, GL832, GL896, GL960, GL 1023: GL 0-GL 128, GL 128-GL 256, GL 256-GL 384, GL 384-GL 512, GL 512-GL 576, GL 576-GL 640, GL 640-GL 704, GL 704-GL 768, GL 768-GL 832, GL 832-GL 896, GL 896-GL 960, GL 960-GL 1023, i.e. 12 gray scale segments correspond to the 12 gray scale nodes, a set of power consumption coefficients corresponding to each of the gray scale segments is determined based on the actual power consumption of the different types of sub-pixels under each gray scale node, e.g. the actual power consumption of each of the four different types of sub-pixels, red sub-pixel (R), green sub-pixel (G), blue sub-pixel (B) and white sub-pixel (W), is tested under GL128 for the gray scale node, determining power consumption coefficients a0, a1, a2 and a3 corresponding to the four different types of sub-pixels, namely the red sub-pixel (R), the green sub-pixel (G), the blue sub-pixel (B) and the white sub-pixel (W), respectively, taking the a0, a1, a2 and a3 as a group of power consumption coefficients corresponding to the gray scale segments GL 0-GL 128, wherein different gray scale values in the GL 0-GL 128 correspond to the same group of power consumption coefficients (namely the a0, a1, a2 and a 3), and each group of power consumption coefficients corresponds to the actual power consumption of the sub-pixels of different types, such as the actual power consumption of the sub-pixels of the four different types, namely the red sub-pixel (R), the green sub-pixel (G), the blue sub-pixel (B) and the white sub-pixel (W); similarly, for the gray-scale node GL512, the actual power consumption of the four different types of sub-pixels of red sub-pixel (R), green sub-pixel (G), blue sub-pixel (B) and white sub-pixel (W) is tested under GL512, and then the actual power consumption of the four different types of sub-pixels of red sub-pixel (R), green sub-pixel (G), blue sub-pixel (B) and white sub-pixel (W) is determined based on the actual power consumption, and the power consumption coefficients B0, B1, B2 and B3 corresponding to the four different types of sub-pixels of red sub-pixel (R), green sub-pixel (G), blue sub-pixel (B2) and white sub-pixel (W) are respectively determined, and B0, B1, B2 and B3 are used as a group of power consumption coefficients corresponding to the gray-scale segments GL384 to GL512, and the different gray-scale values in GL384 to GL512 correspond to the same group of power consumption coefficients (i.e. B0, B1, B2 and B3), and the group of power consumption coefficients correspond to the actual power consumption of the different types of sub-pixels of the sub-pixels, such as B0, B1, B2 and B3; for the rest gray scale nodes and the gray scale segments, the power consumption coefficients are determined in the same way, and finally 12 groups of power consumption coefficients can be obtained. Assuming that the actual power consumption of the sub-pixel W is the smallest under GL512, a3=1 may be determined, and if the actual power consumption is ranked as red sub-pixel (R) > green sub-pixel (G) > blue sub-pixel (B) > white sub-pixel (W) under GL512, the power consumption coefficient ranking may be determined as a0> a1> a2>1 according to the ratio.
It should be noted that the foregoing description of the determination manner of the actual power consumption and the power consumption coefficient is merely an exemplary illustration, and in practical application, other determination manners are not excluded, which is not limited in particular.
There are various ways of determining the luminance of the target pixel according to the luminance of each sub-pixel of the target pixel and a predetermined power consumption coefficient, and one way may include, as an example: the brightness of each sub-pixel of the target pixel is multiplied by the power consumption coefficient corresponding to the sub-pixel, and then the sum is carried out, and the sum result is taken as the brightness of the target pixel. Illustrating: let the luminance of one target pixel be sum_p, sum_p can be determined by the following formula:
Sum_p＝b0* Lr_sub +b1* Lg_sub+b2* Lb_sub+b3* Lw_sub (1)
wherein, B0, B1, B2, B3 may be power coefficients corresponding to different types of sub-pixels (e.g., red sub-pixel (R), green sub-pixel (G), blue sub-pixel (B), and white sub-pixel (W)) under the same gray scale segment (e.g., GL384 to GL 512) in the above embodiment; the lr_sub, lg_sub, lb_sub, and lw_sub may correspond to luminance values of the 4 different types of sub-pixels, that is, the red sub-pixel (R), the green sub-pixel (G), the blue sub-pixel (B), and the white sub-pixel (W), converted by the same gray scale, respectively, and the lr_sub, lg_sub, lb_sub, and lw_sub may be equal.
It should be noted that the foregoing description of the determination manner of the brightness of the target pixel is merely an exemplary illustration, and in practical application, other determination manners are not excluded, which is not limited in particular.
S203, determining a brightness adjustment ratio based on brightness sums and a preset mapping relation, and adjusting the brightness of the display device according to the brightness adjustment ratio, wherein the brightness sums are the sum of the brightness determined by each target pixel in the display device, the brightness determined by each target pixel is the brightness of the same frame, and the preset mapping relation is the corresponding relation between the brightness sums and the brightness adjustment ratio.
As an example, the luminance sum may be normalized to match the luminance sum with the luminance sum range in the preset mapping relation. Distance description: assuming that the luminance sum in the preset mapping relationship is 0-1023 and the luminance sum is 2026, the luminance sum may be normalized so as to fall within the range of 0-1023, so that the corresponding luminance adjustment ratio is found according to the preset mapping relationship.
The above-mentioned preset mapping relationship may be determined in various manners, and one manner may include, as an example: in the preset mapping relation, the brightness sum is in a range smaller than or equal to the first brightness and the threshold value, and the corresponding brightness adjustment proportion is a fixed value; when the brightness sum is in the range between the first brightness sum threshold and the maximum brightness sum, the corresponding brightness adjustment proportion is reduced along with the increase of the brightness sum, and the corresponding brightness adjustment proportion is smaller than the fixed value; wherein the first rate of change of the corresponding luminance adjustment ratio is less than the second rate of change when the luminance sum is in the range between the second luminance sum threshold and the maximum luminance sum, the second rate of change being the rate of change of the corresponding luminance adjustment ratio when the luminance sum is in the range between the first luminance sum threshold and the second luminance sum threshold, the second luminance sum threshold being greater than the first luminance sum threshold.
Referring to fig. 3 and 4, the following illustrates the preset mapping relationship:
in fig. 3 and fig. 4, taking a display device as an example of a screen, the preset mapping relationship may be represented by a Ratio (Ratio) curve, an abscissa x is a Sum of brightness sum_l of a full screen, sum_l is a Sum of brightness sum_p of each target pixel in the screen, an ordinate y is a Ratio, the first brightness and the threshold may be an abscissa corresponding to a B point in fig. 3-4 (e.g., sum_l0 in fig. 3-4), a maximum brightness and may be an abscissa corresponding to a D point in fig. 3-4 (e.g., 1023 in fig. 3-4), a second brightness and the threshold may be an abscissa corresponding to a C point in fig. 3-4 (e.g., 512 in fig. 3-4), the fixed value may be an ordinate corresponding to an a-B segment of the curve in fig. 3-4, the ordinate may be a ratio=1, that is, brightness Sum of full screen and smaller in the a-B segment, and brightness is required to be ensured to be less than brightness in a range of sum_l0. The abscissa of the curves in fig. 3-4 corresponds to the full-screen sum of brightness of color mixture or single color, the abscissa of the curves in fig. 3-4 corresponds to the full-screen sum of brightness of color mixture, the color mixture means that the target pixel may contain a plurality of different types of sub-pixels, and the single color means that the target pixel may contain only one type of sub-pixels; the brightness and the power consumption are both higher, and the curve change needs to be slow, namely the Ratio change rate corresponding to the C-D sections needs to be smaller than the Ratio change rate corresponding to the B-C sections, so that the Ratio curve can achieve full-screen brightness and high-time change slowly (to meet the sense of normal human eyes as much as possible), the screen brightness requirement in low power consumption can be guaranteed, and the user watching experience is guaranteed to the greatest extent.
For fig. 3, the formulas corresponding to the curves of the B to D segments can be as follows, as an example:
according to the difference between k and ratio_min, the degree of the downward convexity of the curve is different, and k=3.5 and ratio_min=0.6 can be set corresponding to the curve shown in fig. 3, and the specific value is not limited and can be designed as required.
The luminance sum may be varied in a plurality of ways within a range between the first luminance and the threshold value and the second luminance and the threshold value, and as an example, the luminance sum may be varied linearly within a range between the first luminance and the threshold value and the second luminance and the threshold value. Illustrating: as shown in fig. 4, the sections B to C may be straight sections, that is, the Ratio of the sections B to C may be changed linearly, so that the low gray scale, that is, the low brightness and the linear change under the circumstance can be ensured, and the viewing experience of the user is further improved.
It should be noted that the foregoing description of the determination manner of the preset mapping relationship is merely an exemplary illustration, and in practical application, other determination manners are not excluded, which is not limited in particular.
According to the technical scheme provided by the embodiment of the application, after the brightness of each sub-pixel converted according to the same gray level is determined under the target pixel of the same gray level, the power consumption coefficient corresponding to the actual power consumption of each sub-pixel under the gray level is acquired, so that the brightness of the target pixel is determined under the same gray level through the brightness of each sub-pixel converted according to the gray level and the power consumption coefficient corresponding to each sub-pixel, and because the actual brightness of each sub-pixel under the same gray level is different, the corresponding actual power consumption is also different, and when the brightness sum of each target pixel of a display device is calculated, the different power consumption coefficients of different types of sub-pixels under the same gray level are introduced, so that the calculated brightness sum of the display device is smaller than the actual brightness sum of the display device, the deviation of the determined brightness adjustment proportion is smaller, and the brightness adjustment effect of the display device is improved.
Corresponding to the above-mentioned method embodiment, as a specific application, the above-mentioned embodiment may be applied to a display device, and thus, the present application further provides a display device, as shown in fig. 5, the display device 501 may include a brightness adjustment component 502, where the brightness adjustment component 502 is used to adjust the brightness of the display device 501;
the brightness adjustment assembly 502 is configured to: determining the brightness of each sub-pixel of a target pixel in the display device 501 according to the gray scale of the target pixel, wherein the target pixel is any pixel in the display device 501; acquiring a predetermined power consumption coefficient, and determining the brightness of the target pixel according to the brightness of each sub-pixel and the power consumption coefficient, wherein the power consumption coefficient corresponds to the actual power consumption of the sub-pixel under the gray scale; and determining a brightness adjustment ratio based on a brightness sum and a preset mapping relation, and adjusting the brightness of the display device 501 according to the brightness adjustment ratio, wherein the brightness sum is the sum of the brightness determined by each target pixel in the display device 501, the brightness determined by each target pixel is the brightness of the same frame, and the preset mapping relation is the corresponding relation between the brightness sum and the brightness adjustment ratio.
As an example, the luminance sum is normalized so that the luminance sum matches the luminance sum range in the preset mapping relation.
As an example, the actual power consumption is obtained by testing the actual power consumption of different types of sub-pixels at different gray levels.
As an example, the brightness adjustment component 502 is further configured to determine the power consumption coefficient by:
determining a gray scale range to be tested, and determining a target number of gray scale nodes in the gray scale range to be tested;
dividing the gray scale range to be tested into the gray scale segments of the target number based on the gray scale nodes, wherein the gray scale segments correspond to the gray scale nodes;
and determining a group of power consumption coefficients corresponding to each gray scale segment based on the actual power consumption of the sub-pixels of different types under each gray scale node, wherein different gray scale values in each gray scale segment correspond to the same group of power consumption coefficients, and each group of power consumption coefficients corresponds to the actual power consumption of the sub-pixels of different types.
The types of the subpixels include, as examples, a red subpixel (R), a green subpixel (G), a blue subpixel (B), and a white subpixel (W).
As an example, in the preset mapping relationship, the brightness sum is within a range smaller than or equal to the first brightness and the threshold value, and the corresponding brightness adjustment ratio is a fixed value; when the brightness sum is in the range between the first brightness sum threshold and the maximum brightness sum, the corresponding brightness adjustment proportion is reduced along with the increase of the brightness sum, and the corresponding brightness adjustment proportion is smaller than the fixed value; wherein the first rate of change of the corresponding luminance adjustment ratio is less than the second rate of change when the luminance sum is in the range between the second luminance and the threshold value and the maximum luminance sum, the second rate of change being the rate of change of the corresponding luminance adjustment ratio when the luminance sum is in the range between the first luminance and the threshold value and the second luminance and the threshold value, the second luminance and the threshold value being greater than the first luminance and the threshold value.
As an example, the luminance sum is in a range between the first luminance and the threshold value and the second luminance and the threshold value, and the corresponding luminance adjustment ratio is linearly changed.
It should be noted that the above embodiments of the method for adjusting brightness of a display device may be applied to the process of adjusting the brightness of the display device 501 by the brightness adjusting component 502 according to the brightness adjusting ratio.
The present application also provides an electronic device, as shown in fig. 6, including:
a processor 601;
a memory 602 for storing processor-executable instructions;
wherein the processor 601 is configured to implement the display device brightness adjustment method described in any of the embodiments above.
The present application also provides a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the display device brightness adjustment method described in any of the above embodiments.
The foregoing is merely illustrative of the embodiments of this application and it will be appreciated by those skilled in the art that variations and modifications may be made without departing from the principles of the application, and it is intended to cover all modifications and variations as fall within the scope of the application.
Claims (16)
1. A display device, comprising a brightness adjustment assembly for adjusting the brightness of the display device;
the brightness adjustment assembly is used for: determining the brightness of each sub-pixel of a target pixel in the display device according to the gray scale of the target pixel, wherein the target pixel is any pixel in the display device; acquiring a predetermined power consumption coefficient, and determining the brightness of the target pixel according to the brightness of each sub-pixel and the power consumption coefficient, wherein the power consumption coefficient corresponds to the actual power consumption of the sub-pixel under the gray scale; and determining a brightness adjustment ratio based on a brightness sum and a preset mapping relation, and adjusting the brightness of the display device according to the brightness adjustment ratio, wherein the brightness sum is the sum of the brightness determined by each target pixel in the display device, the brightness determined by each target pixel is the brightness of the same frame, and the preset mapping relation is the corresponding relation between the brightness sum and the brightness adjustment ratio.
2. The display device according to claim 1, wherein the luminance sum is normalized so as to match the luminance sum with a luminance sum range in the preset map.
3. The display device of claim 1, wherein the actual power consumption is obtained by testing actual power consumption of different types of sub-pixels at different gray levels.
4. A display device as claimed in claim 3, characterized in that the brightness adjustment component is further adapted to determine the power consumption coefficient by:
determining a gray scale range to be tested, and determining a target number of gray scale nodes in the gray scale range to be tested;
dividing the gray scale range to be tested into the gray scale segments of the target number based on the gray scale nodes, wherein the gray scale segments correspond to the gray scale nodes;
and determining a group of power consumption coefficients corresponding to each gray scale segment based on the actual power consumption of the sub-pixels of different types under each gray scale node, wherein different gray scale values in each gray scale segment correspond to the same group of power consumption coefficients, and each group of power consumption coefficients corresponds to the actual power consumption of the sub-pixels of different types.
5. The display device of claim 4, wherein the types of subpixels include a red subpixel, a green subpixel, a blue subpixel, and a white subpixel.
6. The display device according to claim 1, wherein in the preset mapping relationship, the sum of the brightness is within a range of less than or equal to the first brightness and the threshold value, and the corresponding brightness adjustment ratio is a fixed value; when the brightness sum is in the range between the first brightness sum threshold and the maximum brightness sum, the corresponding brightness adjustment proportion is reduced along with the increase of the brightness sum, and the corresponding brightness adjustment proportion is smaller than the fixed value; wherein the first rate of change of the corresponding luminance adjustment ratio is less than the second rate of change when the luminance sum is in the range between the second luminance and the threshold value and the maximum luminance sum, the second rate of change being the rate of change of the corresponding luminance adjustment ratio when the luminance sum is in the range between the first luminance and the threshold value and the second luminance and the threshold value, the second luminance and the threshold value being greater than the first luminance and the threshold value.
7. The display device according to claim 6, wherein a luminance sum is linearly changed in a corresponding luminance adjustment ratio in a range between the first luminance and a threshold value and the second luminance and a threshold value.
8. A method for adjusting brightness of a display device, comprising:
determining the brightness of each sub-pixel of a target pixel in a display device according to the gray scale of the target pixel, wherein the target pixel is any pixel in the display device;
acquiring a predetermined power consumption coefficient, and determining the brightness of the target pixel according to the brightness of each sub-pixel and the power consumption coefficient, wherein the power consumption coefficient corresponds to the actual power consumption of the sub-pixel under the gray scale;
and determining a brightness adjustment ratio based on a brightness sum and a preset mapping relation, and adjusting the brightness of the display device according to the brightness adjustment ratio, wherein the brightness sum is the sum of the brightness determined by each target pixel in the display device, the brightness determined by each target pixel is the brightness of the same frame, and the preset mapping relation is the corresponding relation between the brightness sum and the brightness adjustment ratio.
9. The method of claim 8, wherein the luminance sum is normalized to match the luminance sum to a luminance sum range in the predetermined mapping.
10. The method of claim 8, wherein the actual power consumption is obtained by testing actual power consumption of different types of subpixels at different gray scales.
11. The method of claim 10, wherein the power consumption coefficient is determined by:
determining a gray scale range to be tested, and determining a target number of gray scale nodes in the gray scale range to be tested;
dividing the gray scale range to be tested into the gray scale segments of the target number based on the gray scale nodes, wherein the gray scale segments correspond to the gray scale nodes;
and determining a group of power consumption coefficients corresponding to each gray scale segment based on the actual power consumption of the sub-pixels of different types under each gray scale node, wherein different gray scale values in each gray scale segment correspond to the same group of power consumption coefficients, and each group of power consumption coefficients corresponds to the actual power consumption of the sub-pixels of different types.
12. The method of claim 11, wherein the types of subpixels include a red subpixel, a green subpixel, a blue subpixel, and a white subpixel.
13. The method of claim 8, wherein in the preset mapping relationship, the sum of the brightness is within a range smaller than or equal to the first brightness and the threshold value, and the corresponding brightness adjustment ratio is a fixed value; when the brightness sum is in the range between the first brightness sum threshold and the maximum brightness sum, the corresponding brightness adjustment proportion is reduced along with the increase of the brightness sum, and the corresponding brightness adjustment proportion is smaller than the fixed value; wherein the first rate of change of the corresponding luminance adjustment ratio is less than the second rate of change when the luminance sum is in the range between the second luminance and the threshold value and the maximum luminance sum, the second rate of change being the rate of change of the corresponding luminance adjustment ratio when the luminance sum is in the range between the first luminance and the threshold value and the second luminance and the threshold value, the second luminance and the threshold value being greater than the first luminance and the threshold value.
14. The method of claim 13, wherein the luminance sum is linearly varied within a range between the first luminance and the threshold value and the second luminance and the threshold value.
15. An electronic device, comprising:
a processor;
a memory for storing processor-executable instructions;
wherein the processor is configured to implement the method of any one of claims 8 to 14.
16. A computer readable storage medium, on which a computer program is stored, characterized in that the computer program, when being executed by a processor, implements the steps of the method of any of claims 8 to 14.
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