CN111681620B - Display control method, display device and computer readable storage medium - Google Patents

Display control method, display device and computer readable storage medium Download PDF

Info

Publication number
CN111681620B
CN111681620B CN202010800037.8A CN202010800037A CN111681620B CN 111681620 B CN111681620 B CN 111681620B CN 202010800037 A CN202010800037 A CN 202010800037A CN 111681620 B CN111681620 B CN 111681620B
Authority
CN
China
Prior art keywords
backlight
target
current frame
display
display parameters
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202010800037.8A
Other languages
Chinese (zh)
Other versions
CN111681620A (en
Inventor
闫晓林
林智远
蔡胜强
谢相伟
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shenzhen TCL High-Tech Development Co Ltd
Original Assignee
Shenzhen TCL High-Tech Development Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shenzhen TCL High-Tech Development Co Ltd filed Critical Shenzhen TCL High-Tech Development Co Ltd
Priority to CN202010800037.8A priority Critical patent/CN111681620B/en
Publication of CN111681620A publication Critical patent/CN111681620A/en
Application granted granted Critical
Publication of CN111681620B publication Critical patent/CN111681620B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • 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
    • G09G3/34—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 by control of light from an independent source
    • G09G3/3406—Control of illumination source
    • 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
    • G09G3/34—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 by control of light from an independent source
    • G09G3/36—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 by control of light from an independent source using liquid crystals
    • 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

Abstract

The application is applicable to the technical field of display, and provides a display control method, a display device and a computer readable storage medium. The embodiment of the application provides a display control method applied to a display device, and the initial display parameters of a backlight unit are obtained according to the initial display parameters of a current frame image; acquiring target display parameters of the backlight unit according to the initial display parameters of the backlight unit; calculating target display parameters of the display unit according to the target display parameters of the backlight unit; driving the backlight unit to emit light according to the target display parameters of the backlight unit; the display unit is driven to display the current frame image according to the target display parameters of the display unit, dynamic backlight driving is carried out on the display device by using different target display parameters respectively, image display is carried out, the dynamic driving effect is good, and the display effect is improved.

Description

Display control method, display device and computer readable storage medium
Technical Field
The present application relates to the field of display technologies, and in particular, to a display control method, a display device, and a computer-readable storage medium.
Background
With the continuous development of display technology, various types of display devices are developed, which brings great convenience to daily production and life of people. The liquid crystal display device generally comprises a screen driving board, a backlight structure and a liquid crystal panel, when a picture is required to be displayed, the screen driving board drives the backlight structure to emit light according to input image data, a light source is provided for the liquid crystal panel, and in order to reduce power consumption and improve contrast, a dynamic backlight driving method can be adopted to drive the backlight structure.
Disclosure of Invention
In view of this, embodiments of the present application provide a display control method, a display device, and a computer readable storage medium, which respectively use different display parameters to perform dynamic backlight driving on the display device and perform image display, so that the dynamic driving effect is better and the display effect is improved.
A first aspect of an embodiment of the present application provides a display control method, where the display control method is applied to a display device, where the display device includes a backlight unit and a display unit, the display unit includes a plurality of pixel regions, each pixel region corresponds to a backlight region of the backlight unit, and the backlight region includes M color light emitting sources, and the display control method includes:
acquiring initial display parameters of the backlight unit according to the initial display parameters of the current frame image;
acquiring target display parameters of the backlight unit according to the initial display parameters of the backlight unit;
calculating target display parameters of the display unit according to the target display parameters of the backlight unit;
driving the backlight unit to emit light according to the target display parameters of the backlight unit;
driving the display unit to display the current frame image according to the target display parameters of the display unit;
the acquiring the target display parameters of the backlight unit according to the initial display parameters of the backlight unit comprises:
for each backlight area, acquiring target display parameters of the backlight area according to the initial display parameters of the backlight area and a second preset relation; the second preset relationship comprises the relationship among the maximum value of the preset target display parameter of the light emitting source of the ith color in the backlight area, the initial display parameter and the target display parameter, wherein i =1,2, …, and M is a positive integer.
A second aspect of embodiments of the present application provides a display apparatus, comprising a backlight unit, a display unit, a memory, a processor, and a computer program stored in the memory and executable on the processor, the processor implementing the steps of the display control method according to the first aspect of embodiments of the present application when executing the computer program.
A third aspect of embodiments of the present application provides a computer-readable storage medium storing a computer program which, when executed by a processor, implements the steps of the display control method according to the first aspect of embodiments of the present application
A first aspect of an embodiment of the present application provides a display control method applied to a display device, which obtains initial display parameters of a backlight unit according to initial display parameters of a current frame image; acquiring target display parameters of the backlight unit according to the initial display parameters of the backlight unit; calculating target display parameters of the display unit according to the target display parameters of the backlight unit; driving the backlight unit to emit light according to the target display parameters of the backlight unit; the display unit is driven to display the current frame image according to the target display parameters of the display unit, dynamic backlight driving is carried out on the display device by using different target display parameters respectively, image display is carried out, the dynamic driving effect is good, and the display effect is improved.
It is understood that, the beneficial effects of the second aspect and the third aspect can be referred to the related description of the first aspect, and are not described herein again.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a first flowchart of a display control method according to an embodiment of the present application;
fig. 2 is a second flowchart of a display control method according to an embodiment of the present application;
FIG. 3 is a first relationship curve between an initial display parameter and a target display parameter of a backlight area provided by an embodiment of the present application;
FIG. 4 is a second relationship curve between the initial display parameter and the target display parameter of the backlight area provided by the embodiment of the present application;
fig. 5 is a third flowchart illustrating a display control method according to an embodiment of the present application;
fig. 6 is a fourth flowchart illustrating a display control method according to an embodiment of the present application;
fig. 7 is a fifth flowchart illustrating a display control method according to an embodiment of the present application;
fig. 8 is a schematic structural diagram of a display device according to an embodiment of the present application.
Detailed Description
In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art without making any creative effort according to the embodiments in the present application shall fall within the protection scope of the present application.
The terms "comprises" and "comprising," and any variations thereof, in the description and claims of this application and the drawings described above, are intended to cover non-exclusive inclusions. For example, a process, method, or system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus. Furthermore, the terms "first," "second," and "third," etc. are used to distinguish between different objects and are not used to describe a particular order.
The embodiment provides a display control method, which is applied to a display device, wherein the display device comprises a backlight unit and a display unit, and the display control method is used for performing dynamic backlight driving on the backlight unit and controlling the display unit to display an image. The display control method may be specifically executed by a processor of the display apparatus.
In application, the Display device is a Liquid Crystal Display device implemented based on Liquid Crystal Display (LCD) technology. The backlight unit is composed of a plurality of Light Emitting sources, the plurality of Light Emitting sources may be arranged in an array form, and the Light Emitting sources may be LEDs (Light Emitting diodes), minileds or micro LEDs. The display unit is composed of a plurality of pixel points, the pixel points can be arranged in an array form, and the pixel points are liquid crystal pixel points. The Processor may be a screen driver board (TCON), a Central Processing Unit (CPU), or other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic device, discrete hardware component, or the like. A general purpose processor may be a microprocessor or any conventional processor or the like.
As shown in fig. 1, the display control method provided in this embodiment includes the following steps S101 to S105:
step S101, acquiring initial display parameters of the backlight unit according to the initial display parameters of the current frame image.
In application, the current frame image refers to a frame image to be displayed by the display device driving the display unit. The initial display parameters of the current frame image comprise initial gray scale values or initial brightness values of all pixel points in the current frame image, the initial display parameters of the current frame image comprise initial display parameters which are required to be reached by all the pixel points in the display unit at the current frame, and the initial display parameters of the backlight unit comprise initial gray scale values or initial brightness values when all the luminous sources in the backlight unit are lighted.
And step S102, acquiring target display parameters of the backlight unit according to the initial display parameters of the backlight unit.
In application, the target display parameters of the backlight unit include a target gray-scale value or a target brightness value that all light-emitting sources in the backlight unit need to reach at the current frame when the display unit is driven to display the current frame image.
And step S103, calculating target display parameters of the display unit according to the target display parameters of the backlight unit.
In application, the target display parameters of the display unit include a target gray-scale value or a target brightness value that all pixel points in the display unit need to reach at a current frame when the display unit is driven to display a current frame image.
Step S104, driving the backlight unit to emit light according to the target display parameters of the backlight unit;
and step S105, driving the display unit to display the current frame image according to the target display parameters of the display unit.
In application, after obtaining the target display parameters of the backlight unit and the target display parameters of the display unit, the backlight unit and the display unit are respectively driven according to the target display parameters of the backlight unit and the target display parameters of the display unit. The display device adopts the display control method provided by the embodiment to dynamically drive the backlight unit to emit light and drive the display unit to display each frame image when the backlight unit emits light for each frame image input by the display device.
In application, each initial display parameter and each target display parameter in the present embodiment may be a gray scale value or a brightness value, and the representation form of each parameter may be selected according to actual needs. The gray scale value and the brightness value can be mutually converted according to a conversion formula between the gray scale value and the brightness value, and if one of the gray scale value and the brightness value is known, the other value can be obtained through calculation of the conversion formula.
In one embodiment, the conversion formula between the gray level value and the brightness value is: l = f (gs), f (x) = x ^ gamma;
where L represents a brightness value, GS represents a gray level value, f () represents a gamma curve function, x represents a variable of the gamma curve function, and gamma represents a gamma value.
In application, gamma may take on a value of 2.2.
In the display control method provided in the embodiment corresponding to fig. 1, the initial display parameters of the backlight unit are obtained according to the initial display parameters of the current frame image; acquiring target display parameters of the backlight unit according to the initial display parameters of the backlight unit; calculating target display parameters of the display unit according to the target display parameters of the backlight unit; driving the backlight unit to emit light according to the target display parameters of the backlight unit; the display unit is driven to display the current frame image according to the target display parameters of the display unit, dynamic backlight driving is carried out on the display device by using different target display parameters respectively, image display is carried out, the dynamic driving effect is good, and the display effect is improved.
As shown in fig. 2, in an embodiment, the display unit includes a plurality of pixel regions, each of the pixel regions corresponds to a backlight region of the backlight unit, and the step S101 includes the following steps S201:
step S201, for each of the backlight areas, obtaining an initial display parameter of the backlight area according to an initial display parameter of a pixel area corresponding to the backlight area in a current frame and a first preset relationship.
In application, the number of the backlight areas included in the backlight unit is the same as the number of the pixel areas included in the display unit, and the backlight unit can be divided into a certain number of backlight areas according to actual needs, and the display unit can be divided into a corresponding number of pixel areas. The structure of each backlight region may be the same, that is, the number of the light emitting sources, the color of the light emitting sources, and the connection structure of the light emitting sources included in each backlight region may be the same. The initial display parameters of the backlight unit include initial display parameters of all backlight areas in the backlight unit in the current frame. Step S201 is repeatedly executed to obtain the initial display parameters of all the backlight areas of the backlight unit in the current frame, that is, the initial display parameters of the backlight unit are obtained. Specifically, the initial display parameters of each backlight area of the backlight unit in the current frame may be sequentially obtained, or the initial display parameters of all the backlight areas of the backlight unit in the current frame may be simultaneously obtained.
In one embodiment, step S101 further comprises the following steps before step S201:
dividing the backlight unit into a preset number of backlight areas;
dividing the display unit into a preset number of pixel areas which are not overlapped with each other according to the position of each backlight area in the backlight unit, wherein each pixel area corresponds to one backlight area;
or, dividing the display unit into a preset number of pixel regions;
and dividing the backlight unit into a preset number of non-overlapped backlight areas according to the position of each pixel area in the display unit, wherein each pixel area corresponds to one backlight area.
In application, when the display unit and the backlight unit are sequentially stacked, the backlight unit may be first divided into a plurality of backlight regions, and then the display unit may be divided into a plurality of pixel regions that do not overlap with each other by using a projection position of an interval region between adjacent backlight regions in the backlight unit in the display unit as a division position; the display unit may be divided into a plurality of pixel regions, and then the backlight unit may be divided into a plurality of non-overlapping backlight regions by using the projection position of the spacing region between adjacent pixel regions in the display unit in the backlight unit as the division position. The number of the light emitting sources included in the backlight unit can be set according to actual needs, the light emitting sources can be monochrome light emitting sources or bicolor light emitting sources, and the bicolor light emitting sources refer to light emitting sources capable of emitting light rays of two colors. Each backlight area comprises at least one luminous source, and each pixel area comprises at least one pixel point. Each luminous source corresponds to at least one pixel point.
In application, when the display device inputs one frame of image, the initial display parameters of all backlight areas in the backlight unit can be calculated according to the initial display parameters of the current frame of image input by the display device, and the initial display parameters of the backlight unit comprise the initial display parameters of all backlight areas in the backlight unit.
As shown in fig. 2, in one embodiment, step S102 includes the following step S202:
step S202, for each backlight area, acquiring target display parameters of the backlight area according to the initial display parameters of the backlight area and a second preset relation.
In application, the target display parameters of the backlight unit include target display parameters of all backlight areas of the backlight unit in the current frame. And step S202 is repeatedly executed to obtain target display parameters of all backlight areas of the backlight unit in the current frame, that is, the target display parameters of the backlight unit are obtained. Specifically, the initial display parameters of each backlight area of the backlight unit in the current frame may be sequentially obtained, or the initial display parameters of all the backlight areas of the backlight unit in the current frame may be simultaneously obtained.
In the embodiment corresponding to fig. 2, the backlight unit and the display unit are partitioned, and then the initial display parameter of a corresponding backlight area is obtained according to the initial display parameter of each pixel area in the current frame and the first preset relationship, so that the partition obtaining of the initial display parameter of the backlight unit can be realized, and the precision of the obtained initial display parameter of the backlight unit can be effectively improved. Furthermore, the target display parameters of each backlight area are obtained according to the initial display parameters of each backlight area and the second preset relation, so that the target display parameters of the backlight unit can be obtained in a partition mode, and the precision of the obtained target display parameters of the backlight unit can be effectively improved.
In one embodiment, the backlight area includes M kinds of light emitting sources, where M is a positive integer, and step S201 includes:
acquiring initial gray-scale values of all pixel points corresponding to the light-emitting sources of the ith color in the pixel region corresponding to the backlight region in the current frame, and forming an ith three-dimensional array as initial display parameters of all pixel points corresponding to the light-emitting sources of the ith color in the pixel region corresponding to the backlight region in the current frame;
acquiring initial display parameters of the light emitting source of the ith color in the current frame according to the ith three-dimensional array and the first preset relation;
the ith three-dimensional array comprises three dimensions of rows, columns and colors, i =1,2 and …, and M is more than or equal to 1 and less than or equal to 3.
In application, since the backlight unit includes a plurality of backlight regions, each of which includes M color light-emitting sources, the initial display parameters of the backlight unit include initial display parameters of all color light-emitting sources in the backlight unit in the current frame. And repeating the steps included in the step S201 to obtain the initial display parameters of the light emitting sources of all colors in the backlight unit in the current frame, that is, to obtain the initial display parameters of the backlight unit. Specifically, the initial display parameters of the light emitting sources of each color in each backlight area in the current frame may be sequentially obtained, or the initial display parameters of the light emitting sources of all colors in each backlight area in the current frame may be simultaneously obtained.
In applications, the backlight area may comprise one color, two colors or three colors of light emitting sources. When the backlight region includes only one color of the light emission sources, i = M =1, and one color may be any one of White (White, W), Red (Red, R), Green (Green, G), and Blue (Blue, B). When the backlight region includes light emitting sources of two colors, i =1,2, M =2, the two colors may include any two of R, G and B. When the backlight region includes three colors of light emitting sources, i =1,2,3, M =3, the three colors may include R, G and B.
In application, after the initial gray-scale values of all pixel points in the current frame in the pixel region corresponding to the light-emitting source with the ith color are obtained, the initial gray-scale values of all the pixel points in the pixel region corresponding to the light-emitting source with the ith color in the current frame can be represented in a three-dimensional array form, and the three dimensions of the row, the column and the color of the pixel points in the display unit are respectively used for representing the row position, the column position and the color of the pixel points in the display unit of the pixel points, namely the row position, the column position and the color of the pixel points in the display unit of the pixel points corresponding to the initial gray-scale values can be uniquely determined according to each initial gray-scale value in the three-dimensional array.
In application, when the backlight area includes two color light emitting sources, the first step included in step S201 may be specifically expressed as the following steps:
acquiring initial gray-scale values of all pixel points corresponding to the luminous sources of the first color in the pixel region corresponding to the backlight region in the current frame, and forming a first three-dimensional array as initial display parameters of all pixel points corresponding to the luminous sources of the first color in the pixel region corresponding to the backlight region in the current frame;
acquiring initial gray-scale values of all pixel points corresponding to the luminous sources of the second color in the pixel region corresponding to the backlight region in the current frame, and forming a second three-dimensional array as initial display parameters of all pixel points corresponding to the luminous sources of the second color in the pixel region corresponding to the backlight region in the current frame;
correspondingly, the second step included in step S201 can be specifically expressed as the following steps:
acquiring initial display parameters of the luminous sources with the first color in the current frame according to the first three-dimensional array and a first preset relation;
and acquiring initial display parameters of the luminous sources with the second color in the current frame according to the second three-dimensional array and the first preset relation.
In application, for a light emitting source of any color in each backlight area, the initial gray-scale values of all pixel points corresponding to the light emitting source of any color in the current frame can be obtained, and a three-dimensional array is formed and used as the initial display parameters of all pixel points corresponding to the light emitting source of any color in the current frame; and then obtaining the initial display parameters of the luminous source with any color in the current frame according to the three-dimensional array and the first preset relation.
In one embodiment, the expression of the first preset relationship is:
f1(GSi)=max(GSi)；
or, f1(GSi)=sum(GSi^2)/sum(GSi)；
Or, f1(GSi)=avg(GSi)；
Or, f1(GSi)=sqrt(sum(GSi^2))；
Wherein f is1(GSi) Initial display parameters, GS, of the luminous sources representing the ith color in the current frameiRepresents the ith three-dimensional array, max () represents a maximum function, sum () represents a summation function, avg () represents an averaging function, and sqrt () represents a square root function.
In application, f1(GSi)=max(GSi) Represents: and acquiring the maximum initial gray-scale value of R, G, B color channels of all pixel points in the pixel region corresponding to the luminous source of the ith color in the initial gray-scale value of the current frame, and assigning the maximum initial gray-scale value to the initial display parameter of the luminous source of the ith color. f. of1(GSi)=sum(GSi^2)/sum(GSi) Represents: respectively obtaining R, G, B color channels of each pixel point in a pixel area corresponding to the luminous source with the ith color, and summing after the square of the initial gray-scale value of the current frame to obtain a first summation result; then, the initial gray-scale values of R, G, B color channels of all pixel points in the pixel region corresponding to the luminous source with the ith color in the current frame are summed to obtain a second summation result; finally, the quotient of the first summation result and the second summation result is calculated and assigned to the initial display parameter of the luminous source of the ith color. f. of1(GSi)=avg(GSi) Represents: and acquiring an average initial gray-scale value of the initial gray-scale values of R, G, B color channels of all pixel points in the pixel region corresponding to the luminous source of the ith color in the current frame, and assigning the average initial gray-scale value to the initial display parameters of the luminous source of the ith color. f. of1(GSi)=sqrt(sum(GSi2)) represents: respectively obtaining R, G, B color channels of each pixel point in a pixel area corresponding to the luminous source with the ith color, and summing after the square of the initial gray-scale value of the current frame to obtain a first summation result; the square root of the first summation result is then calculated and assigned to the initial display parameters of the light emitting source of the ith color. For any color of the light-emitting source in any backlight area, the initial display parameters of the light-emitting source in the current frame can be calculated by using any one of the four first relations. When the initial display parameters of the backlight unit are obtained according to the initial display parameters of the current frame image, there are four first relations usedOne, two or more of the following formulae.
In one embodiment, the backlight area includes M color light emitting sources, the second preset relationship includes a relationship among a maximum value of preset target display parameters of the current frame, initial display parameters and target display parameters of the ith color light emitting source in the backlight area, and i =1,2, …, M is a positive integer.
In an application, the backlight area may include any number of light emitting sources of different colors, and the colors of the light emitting sources may be set to any color according to actual needs, for example, white, red, yellow, blue, green, and so on. The maximum value of the preset target display parameter of the luminous source of each color in the current frame can be set according to actual needs, and the maximum values of the preset target display parameters of the luminous sources of different colors in the current frame can be set to be the same or different.
In one embodiment, the expression of the second preset relationship is:
f2(Si)=Bimax*Si k；
or, f2(Si)= Bimax*(1-e-si/simax)/(1-e-1)；
Or, f2(Si)= Bimax*log(Si+1)/ log(Simax+1)；
Or, when Si≤S0iWhen f is present2(Si)= Bimax*Si/S0i(ii) a When S is0i＜Si≤SimaxWhen f is present2(Si)= Bimax；
Wherein f is2(Si) Target display parameter, S, of light emitting source representing ith color in current frameiInitial display parameters of the light emitting source representing the ith color in the current frame, BimaxMaximum value of target display parameter of preset light-emitting source with i color in current frame, S0iA critical value of an initial display parameter of a preset light emitting source of the ith color in the current frame, SimaxAnd the maximum value of the initial display parameters of the preset light-emitting source of the ith color in the current frame is i =1,2, …, M, 1 is more than or equal to M and less than or equal to 3, and k is more than 0 and less than 1.
In application, the light source of the ith color has initial display parameter S of the current frameiMay be equal to any one of f in the first preset relationship1(GSi). Maximum value B of target display parameter of preset light-emitting source with ith color in current frameimaxThe luminance value of the light source of the ith color may be a maximum target luminance value or a target gray-scale value when the current frame is lit, and specifically may be a maximum target luminance value. Critical value S of initial display parameter of preset light-emitting source of ith color in current frame0iAny value greater than 0 and less than the maximum value of the initial display parameter of the light-emitting source of the ith color can be set according to actual needs. When S isi≤S0iWhen f is present2(Si)= Bimax*Si/S0iRepresents: when the initial display parameter of the light source of the ith color is greater than 0 and less than or equal to the critical value, the target display parameter of the light source of the ith color is in direct proportion to the initial display parameter of the light source of the ith color, and the ratio is equal to Bimax/ S0i. When S is0i＜Si≤SimaxWhen f is present2(Si)= BimaxRepresents: when the initial display parameter of the light source of the ith color is larger than the critical value and smaller than or equal to the maximum value, the display parameter of the light source of the ith color is equal to the maximum value B of the preset target display parameter of the light source of the ith colorimax. For any color of the light-emitting source in any backlight area, the target display parameter of the light-emitting source in the current frame can be calculated by using any one of the four second relational expressions, that is, when the target display parameter of the backlight unit is obtained according to the initial display parameter of the backlight unit, there are cases where one, two or more of the four second relational expressions are used.
As shown in fig. 3, it is exemplarily shown that the backlight region includes only one color of the light emission source, and when i = M =1, the expression is expressed when S1≤S01When f is present2(S1)= B1max*S1/S01(ii) a When S is01＜S1≤S1maxWhen f is present2(S1)= B1maxAnd a first relation curve between the initial display parameter S and the display parameter B of the corresponding backlight area.
As shown in fig. 4, it is exemplarily shown that the backlight region includes only one color of the light emitting sources, and when i = M =1, the expression f is satisfied2(S1)=B1max*S1 k、f2(S1)= B1max*(1-e-s1/s1max)/(1-e-1) Or f2(S1)= B1max*log(S1+1)/ log(S1max+1) the second relation curve between the initial display parameter S and the display parameter B of the corresponding backlight area.
The present embodiment can effectively improve the accuracy of the obtained initial display parameters of the backlight unit by providing a method for obtaining the initial display parameters of the backlight unit including M color light emitting sources, and providing a plurality of calculation formulas that can be used to calculate the initial display parameters of each backlight area of the backlight unit according to the initial display parameters of each pixel area of the display unit; furthermore, the target display parameters of each backlight area are obtained according to the initial display parameters of each backlight area and the second preset relation, so that the target display parameters of the backlight unit can be obtained in a partition mode, and the precision of the obtained target display parameters of the backlight unit can be effectively improved. And the second preset relation reflects the relation among the maximum value of the preset target display parameter of the current frame, the initial display parameter and the target display parameter of each color of the light emitting source in the backlight area, so that the target display parameter of the current frame can be calculated only according to the maximum value of the preset target display parameter of the current frame and the initial display parameter, the display parameter of the previous frame does not need to be stored and called in advance, the calculation speed of the target display parameter of the backlight unit can be effectively improved, and the consumption of the storage space of the display device is effectively reduced.
As shown in fig. 5, in an embodiment, the display unit includes a plurality of pixel regions, each of the pixel regions corresponds to a backlight region of the backlight unit, and after step S102 or S202, the method includes the following steps S501 and S502:
step S501, for each backlight area, comparing the target brightness value of the backlight area in the current frame with the target brightness value of the previous frame, and correcting the target brightness value of the backlight area in the current frame once according to the comparison result;
step S502, updating the target display parameter of the backlight area according to the target brightness value of the backlight area after the primary correction in the current frame to obtain the target display parameter of the backlight area after the primary correction.
Steps S501 and S502 are exemplarily shown in fig. 5 after step S202.
In application, the dividing manner of the backlight area refers to the embodiment corresponding to fig. 2, and is not described herein again. The target display parameters of the backlight unit after the one correction include target display parameters of all backlight areas after the one correction. Repeating the steps S501 and S502, and obtaining the target display parameters of all backlight areas of the backlight unit after the first correction, that is, obtaining the target display parameters of the backlight unit after the first correction. Specifically, the target display parameters of each backlight area after one correction in the current frame may be sequentially acquired, or the target display parameters of all backlight areas after one correction in the current frame may be simultaneously acquired. The target display parameter of the backlight area is specifically a target brightness value of the backlight area in the current frame. Comparing the target brightness value of the backlight area in the current frame with the target brightness value of the previous frame, and correcting (i.e. increasing or decreasing) the target brightness value of the backlight area in the current frame once according to the comparison result, so that the absolute value of the difference between the target brightness value of the backlight area in the current frame after the correction once and the target brightness value of the previous frame is less than or equal to a first preset value. And then, updating the target display parameters of the backlight area to the target brightness value of the backlight area after the primary correction in the current frame. The first preset value can be set according to actual needs.
In application, the target brightness values of the backlight area in the current frame and the previous N (N is greater than or equal to 2) frames may also be compared, a corresponding first preset value is set for each frame in the previous N frames, the target brightness values of the backlight area in the current frame and the previous N frames are respectively compared, an absolute value of a difference between the target brightness values of the backlight area in the current frame and the previous N frames is obtained, and then the absolute value of the difference is compared with the first preset value corresponding to each frame in the previous N frames, and if the absolute value of the difference is greater than the first preset value corresponding to any frame in the previous N frames, the target brightness value of the backlight area in the current frame is corrected once, so that the absolute value of the difference is less than or equal to the first preset value corresponding to each frame in the previous N frames.
In one embodiment, the backlight area includes M color light emitting sources, and step S501 includes:
comparing the target brightness value of the light-emitting source of the ith color in the current frame with the target brightness value of the previous frame, and if the absolute value of the difference between the target brightness value of the light-emitting source of the ith color in the current frame and the target brightness value of the previous frame is greater than the ith brightness value, correcting the target brightness value of the light-emitting source of the ith color in the current frame at one time;
step S502 includes:
updating the target display parameters of the light emitting sources with the ith color according to the target brightness value of the light emitting sources with the ith color after the primary correction at the current frame to obtain the target display parameters of the light emitting sources with the ith color after the primary correction;
wherein i =1,2, …, M, 1 is not less than M and not more than 3.
In application, since the backlight unit includes a plurality of backlight regions, each of which includes M colors of light emitting sources, the target display parameters of the backlight unit after one correction include target display parameters of all colors of light emitting sources in the backlight unit after one correction in the current frame. Repeating the steps included in the steps S501 and S502, and obtaining the target display parameters of the light emitting sources of all colors in the backlight unit after the first correction, that is, obtaining the target display parameters of the backlight unit after the first correction. Specifically, the target display parameters of the light emitting sources of each color in each backlight area after the correction at a time in the current frame may be sequentially obtained, or the target display parameters of the light emitting sources of all colors in each backlight area after the correction at a time in the current frame may be simultaneously obtained. The absolute value of the difference between the target brightness value of the current frame and the target brightness value of the last frame of the lighting source of the ith color after the primary correction is less than or equal to the ith brightness value, and the ith brightness value can be set according to actual needs.
In one embodiment, based on steps S501 and S502, step S103 includes:
and calculating target display parameters of the display unit according to the target display parameters of the backlight area after one correction.
In the embodiment corresponding to fig. 5, the target luminance values of the backlight area in the current frame and the previous frame are compared, and the target luminance value of the backlight area in the current frame is corrected once according to the comparison result, so that the driving effect and the driving precision of the backlight unit can be effectively improved.
As shown in fig. 6, in one embodiment, after step S502, the following steps S601 and S602 are included:
step S601, comparing the target brightness value of the backlight area after primary correction in the current frame with the target brightness value of the first adjacent backlight area of the backlight area after primary correction in the current frame, and secondarily correcting the target brightness value of the backlight area in the current frame according to the comparison result;
step S602, updating the target display parameter of the backlight area after the primary correction according to the target luminance value of the backlight area after the secondary correction in the current frame, to obtain the target display parameter of the backlight area after the secondary correction.
In the application, the target display parameters of the backlight unit after the secondary correction include target display parameters of all backlight areas after the secondary correction in the current frame. Repeating the steps S501, S502, S601 and S602, and obtaining the target display parameters of all backlight areas of the backlight unit after the secondary correction, that is, obtaining the target display parameters of the backlight unit after the secondary correction. Specifically, the target display parameters of each backlight area after the secondary correction in the current frame may be sequentially acquired, or the target display parameters of all backlight areas after the secondary correction in the current frame may be simultaneously acquired. For each backlight area, the first adjacent backlight area includes all or part of the backlight area within a first preset coordinate range around the backlight area, and the first preset coordinate range can be set according to actual needs. Assuming that the first preset coordinate range is set to be other backlight regions differing from the abscissa and ordinate of a certain backlight region by 1~ m (where m ≧ 1 and is an integer), when m =7, the first neighboring backlight region includes any other backlight region among (2m +1) × (2m +1) -1=224 other backlight regions set around the backlight region centering on the backlight region. Specifically, the first adjacent backlight area may include a center area or an edge area within a first preset coordinate range around the backlight area.
In the application, the target brightness value of the backlight area after the primary correction in the current frame is compared with the target brightness value of the backlight area adjacent to the target brightness value of the backlight area after the primary correction in the current frame, and the target brightness value of the backlight area after the secondary correction in the current frame is secondarily corrected (i.e. increased or decreased) according to the comparison result, so that the absolute value of the difference between the target brightness value of the backlight area after the secondary correction in the current frame and the target brightness value of the backlight area after the primary correction in the previous frame is less than or. The second preset value can be set according to actual needs.
In one embodiment, the backlight area includes M color light emitting sources, and step S601 includes:
comparing the target brightness value of the light-emitting source of the ith color after primary correction with the target brightness value of the first adjacent backlight area of the light-emitting source of the ith color after primary correction, and if the absolute value of the difference between the target brightness value of the light-emitting source of the ith color after primary correction and the target brightness value of the first adjacent backlight area of the light-emitting source of the ith color after primary correction is greater than the M + i brightness value, secondarily correcting the target brightness value of the light-emitting source of the ith color in the current frame;
step S602, including:
updating the target display parameters of the light-emitting sources with the ith color after the primary correction according to the target brightness value of the light-emitting sources with the ith color after the secondary correction at the current frame to obtain the target display parameters of the light-emitting sources with the ith color after the secondary correction;
wherein i =1,2, …, M, 1 is not less than M and not more than 3.
In application, since the backlight unit includes a plurality of backlight regions each including the light emission sources of M colors, the target display parameters of the backlight unit after the secondary correction include target display parameters of all the light emission sources in the backlight unit after the secondary correction. Repeating the steps included in the steps S601 and S602, and obtaining the target display parameters of all the light emitting sources of the backlight unit after the secondary correction, that is, obtaining the target display parameters of the backlight unit after the secondary correction. Specifically, the target display parameters of the light emitting sources of each color in the current frame after the secondary correction may be sequentially obtained, or the target display parameters of the light emitting sources of all colors in the current frame after the secondary correction may be simultaneously obtained. The absolute value of the difference between the target brightness value of the light-emitting source of the ith color after the secondary correction in the current frame and the target brightness value of the first adjacent backlight area of the light-emitting source of the ith color after the primary correction in the current frame is less than or equal to the M + i brightness value, and the M + i brightness value can be set according to actual needs.
In one embodiment, based on steps S501, S502, S601 and S602, step S103 further includes:
and calculating target display parameters of the display unit according to the target display parameters of the backlight area after secondary correction.
In the embodiment corresponding to fig. 6, the target luminance value of the backlight area after the first correction in the current frame is compared with the target luminance value of the first neighboring backlight area of the backlight area after the first correction in the current frame, and the target luminance value of the backlight area in the current frame is secondarily corrected according to the comparison result, so that the driving effect and the precision when the backlight unit is driven can be further improved.
As shown in fig. 7, in one embodiment, based on any of the above embodiments, step S103 includes the following steps S701 to S704:
step S701, for each pixel point of the display unit, calculating the total brightness contribution to the pixel area where the pixel point is located when a second adjacent backlight area of the backlight area corresponding to the pixel area where the pixel point is located is lighted.
In application, for each pixel point of the display unit, the second adjacent backlight area includes all or part of the backlight area in a second preset coordinate range around the backlight area corresponding to the pixel area where the pixel point is located, and the second preset coordinate range can be set according to actual needs. And acquiring a first total brightness value generated in the pixel area where the pixel point is located when the second adjacent backlight area illuminates the pixel area where the pixel point is located, and acquiring the contribution of the total brightness value.
In application, it is assumed that the second preset coordinate range is set as other backlight regions having a difference of 1-n (where n is greater than or equal to 1 and is an integer) between the abscissa and the ordinate of the backlight region corresponding to the pixel region where a certain pixel is located, and when n =4, the second adjacent backlight region includes any other backlight region of (2n +1) × (2n +1) -1=80 other backlight regions that are set around the backlight region with the backlight region as the center. Specifically, the second adjacent backlight area may include a center area or an edge area within a second preset coordinate range around the backlight area.
In application, when the second adjacent backlight area includes a central area within a second preset coordinate range around the backlight area corresponding to the pixel area where the pixel point is located for each pixel point of the display unit, the second adjacent backlight area includes (2 n) the backlight area is arranged around the backlight area with the backlight area as the center1+1)×(2n1+1) -1 other backlight areas, where 1 < n1N is not more than n and n1Is an integer; when n =4, n1When =3, the second adjacent backlight region includes 48 other backlight regions of the 80 other backlight regions. The second adjacent backlight area includes the imageWhen the edge area in the second preset coordinate range around the backlight area corresponding to the pixel area where the pixel point is located, the second adjacent backlight area comprises (2n +1) × (2n +1) - (2 n) which is arranged around the backlight area by taking the backlight area as the center2+1)×(2n2+1) other backlight areas, where 1 < n2N is not more than n and n2Is an integer; when n =4, n2When =2, the second adjacent backlight region includes 56 other backlight regions of the 80 other backlight regions.
Step S702, obtaining a ratio between the total luminance value contribution and a total luminance value when all backlight areas of the backlight unit are simultaneously lit.
In application, for each pixel point of the display unit, all backlight areas of the backlight unit are obtained to be lightened at the same brightness value, when the pixel area where the pixel point is located is illuminated, a second total brightness value generated in the pixel area where the pixel point is located is obtained, and then the ratio of the first total brightness value to the second total brightness value is calculated.
And step S703, acquiring the target display parameter of the pixel point in the current frame according to the ratio and the target display parameter of the backlight unit.
In application, the target brightness value of the backlight area corresponding to the pixel area where each pixel point of the display unit is located in the current frame is corrected according to the ratio and the gamma curve function, and the target gray-scale value of each pixel point in the current frame after correction is obtained, namely the target display parameter of each pixel point in the current frame.
In one embodiment, step S703 includes:
calculating the target display parameters of the pixel points in the current frame according to the ratio, the target display parameters of the backlight unit and a gray scale formula, wherein the gray scale formula is as follows:
GS’(x,y)=f3 -1(k(x,y)*f3(GS))；
wherein GS' (x, y) represents the target gray level value of the pixel point in the current frame, f3 -1() Represents an inverse function of a gamma curve function, k (x, y) represents the ratio, and (x, y) represents the pixelCoordinates of points in the display unit, f3() Representing said gamma curve function, f3(GS) represents a target luminance value of the backlight unit at the current frame, and GS represents a target gray-scale value of the backlight unit at the current frame.
Step S704, repeating the above steps, obtaining target display parameters of all pixel points of the display unit in the current frame, and obtaining the target display parameters of the display unit.
In application, the target display parameters of the display unit include target display parameters of all pixel points in the display unit in the current frame. And repeating the steps from S701 to S703 to obtain the target display parameters of all the pixel points of the display unit in the current frame, namely obtaining the target display parameters of the display unit. Specifically, the target display parameters of each pixel point of the display unit in the current frame may be sequentially obtained, or the target display parameters of all the pixel points of the display unit in the current frame may be simultaneously obtained.
In the embodiment corresponding to fig. 7, when the second adjacent backlight area of the backlight area corresponding to the pixel area where each pixel point of the display unit is located is lit, the target display parameter of each pixel point in the current frame is obtained for the total luminance value contribution of the pixel area where the pixel point is located, the ratio between the total luminance value contribution and the total luminance value when all the backlight areas are lit simultaneously, and the target display parameter of the backlight unit, so that a more accurate target display parameter of the display unit can be obtained, and the display effect when the display unit is driven to display an image is effectively improved.
It should be understood that, the sequence numbers of the steps in the foregoing embodiments do not imply an execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present application.
As shown in fig. 8, an embodiment of the present application provides a display device 1000 including: a backlight unit 100, a display unit 200, a processor 300, a memory 400 and a computer program 401, e.g. a driver, stored in said memory 400 and executable on said processor 300. The processor 300, when executing the computer program 401, implements the steps in the various display control method embodiments described above, such as the steps S101 to S105 shown in fig. 1.
Illustratively, the computer program 401 may be partitioned into one or more modules that are stored in the memory 400 and executed by the processor 300 to accomplish the present application. The one or more modules may be a series of computer program instruction segments capable of performing specific functions, which are used to describe the execution of the computer program 401 in the display device 1000. For example, the computer program 401 may be divided into a first obtaining module, a second obtaining module, a calculating module, a backlight driving module, and a display driving module, and the specific functions of each module are as follows:
the first acquisition module is used for acquiring the initial display parameters of the backlight unit according to the initial display parameters of the current frame image;
the second acquisition module is used for acquiring target display parameters of the backlight unit according to the initial display parameters of the backlight unit;
the calculation module is used for calculating target display parameters of the display unit according to the target display parameters of the backlight unit;
the backlight driving module is used for driving the backlight unit to emit light according to the target display parameters of the backlight unit;
and the display driving module is used for driving the display unit to display the current frame image according to the target display parameters of the display unit.
The display device 1000 may be a display device such as a monitor, a mobile phone, a television, and an advertisement machine. The display device may include, but is not limited to, a backlight unit 100, a display unit 200, a processor 300, and a memory 400. Those skilled in the art will appreciate that fig. 8 is merely an example of the display apparatus 1000, and does not constitute a limitation of the display apparatus 1000, and may include more or less components than those shown, or combine some of the components, or different components, for example, the display apparatus may further include an input-output device, a network access device, a bus, etc.
The memory 400 may be an internal storage unit of the display apparatus 1000, such as a hard disk or a memory of the display apparatus 1000. The memory 400 may also be an external storage device of the display apparatus 1000, such as a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), and the like, which are provided on the display apparatus 1000. Further, the memory 400 may also include both an internal storage unit and an external storage device of the display apparatus 1000. The memory 400 is used to store the computer program and other programs and data required by the display device. The memory 400 may also be used to temporarily store data that has been output or is to be output.
It will be clear to those skilled in the art that, for convenience and simplicity of description, the foregoing division of the functional modules is merely illustrated, and in practical applications, the above function distribution may be performed by different functional modules according to needs, that is, the internal structure of the apparatus is divided into different functional modules to perform all or part of the above described functions. Each functional module in the embodiments may be integrated into one processing module, or each module may exist alone physically, or two or more modules are integrated into one module, and the integrated module may be implemented in a form of hardware, or in a form of software functional module. In addition, specific names of the functional modules are only used for distinguishing one functional module from another, and are not used for limiting the protection scope of the application. The specific working process of the modules in the system may refer to the corresponding process in the foregoing method embodiment, and is not described herein again.
In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and reference may be made to the related descriptions of other embodiments for parts that are not described or illustrated in a certain embodiment.
Those of ordinary skill in the art will appreciate that the various illustrative modules and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the modules is merely a logical division, and in actual implementation, there may be other divisions, for example, multiple modules or components may be combined or integrated into another system, or some features may be omitted, or not implemented. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or modules, and may be in an electrical, mechanical or other form.
The modules described as separate parts may or may not be physically separate, and parts displayed as modules may or may not be physical modules, may be located in one place, or may be distributed on a plurality of network modules. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment.
In addition, functional modules in the embodiments of the present application may be integrated into one processing module, or each of the modules may exist alone physically, or two or more modules are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode.
The integrated module, if implemented in the form of a software functional module and sold or used as a stand-alone product, may be stored in a computer readable storage medium. It should be understood that, all or part of the processes in the methods of the embodiments described above may be implemented by a computer program, which may be stored in a computer readable storage medium and executed by a processor, to implement the steps of the embodiments of the methods described above. Wherein the computer program comprises computer program code, which may be in the form of source code, object code, an executable file or some intermediate form, etc. The computer-readable medium may include: any entity or device capable of carrying the computer program code, recording medium, usb disk, removable hard disk, magnetic disk, optical disk, computer Memory, Read-Only Memory (ROM), Random Access Memory (RAM), electrical carrier wave signals, telecommunications signals, software distribution medium, and the like.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present application and are intended to be included within the scope of the present application.

Claims (13)

1. A display control method is applied to a display device, the display device comprises a backlight unit and a display unit, the display unit comprises a plurality of pixel regions, each pixel region corresponds to a backlight region of the backlight unit, the backlight region comprises luminous sources with M colors, and the display control method comprises the following steps:
acquiring initial display parameters of the backlight unit according to the initial display parameters of the current frame image;
acquiring target display parameters of the backlight unit according to the initial display parameters of the backlight unit;
calculating target display parameters of the display unit according to the target display parameters of the backlight unit;
driving the backlight unit to emit light according to the target display parameters of the backlight unit;
driving the display unit to display the current frame image according to the target display parameters of the display unit;
the acquiring the target display parameters of the backlight unit according to the initial display parameters of the backlight unit comprises:
for each backlight area, acquiring target display parameters of the backlight area according to the initial display parameters of the backlight area and a second preset relation; the second preset relationship comprises the relationship among the maximum value of the preset target display parameter of the light emitting source of the ith color in the backlight area, the initial display parameter and the target display parameter, wherein i =1,2, …, and M is a positive integer.
2. The method as claimed in claim 1, wherein the obtaining initial display parameters of the backlight unit according to the initial display parameters of the current frame image comprises:
and for each backlight area, acquiring initial display parameters of the backlight area according to the initial display parameters of the pixel area corresponding to the backlight area in the current frame and a first preset relation.
3. The method as claimed in claim 2, wherein the obtaining of the initial display parameter of the backlight area according to the initial display parameter of the pixel area corresponding to the backlight area in the current frame and a first preset relationship comprises:
acquiring initial gray-scale values of all pixel points corresponding to the light-emitting sources of the ith color in the pixel region corresponding to the backlight region in the current frame, and forming an ith three-dimensional array as initial display parameters of all pixel points corresponding to the light-emitting sources of the ith color in the pixel region corresponding to the backlight region in the current frame;
acquiring initial display parameters of the light emitting source of the ith color in the current frame according to the ith three-dimensional array and the first preset relation;
the ith three-dimensional array comprises three dimensions of rows, columns and colors, i =1,2 and …, and M is more than or equal to 1 and less than or equal to 3.
4. The display control method according to claim 3, wherein the expression of the first preset relationship is:
f1(GSi)=max(GSi)；
or, f1(GSi)=sum(GSi^2)/sum(GSi)；
Or, f1(GSi)=avg(GSi)；
Or, f1(GSi)=sqrt(sum(GSi^2))；
Wherein f is1(GSi) Initial display parameters, GS, of the luminous sources representing the ith color in the current frameiRepresents the ith three-dimensional array, max () represents a maximum function, sum () represents a summation function, avg () represents an averaging function, and sqrt () represents a square root function.
5. The display control method according to any one of claims 1 to 4, wherein the backlight area includes light emission sources of M colors, and the expression of the second preset relationship is:
f2(Si)=Bimax*Si k；
or, f2(Si)= Bimax*(1-e-si/simax)/(1-e-1)；
Or, f2(Si)= Bimax*log(Si+1)/ log(Simax+1)；
Or, when Si≤S0iWhen f is present2(Si)= Bimax*Si/S0i(ii) a When S is0i＜Si≤SimaxWhen f is present2(Si)= Bimax；
Wherein f is2(Si) Watch (A)Target display parameter S of light emitting source with ith color in current frameiInitial display parameters of the light emitting source representing the ith color in the current frame, BimaxMaximum value of target display parameter of preset light-emitting source with i color in current frame, S0iA critical value of an initial display parameter of a preset light emitting source of the ith color in the current frame, SimaxAnd the maximum value of the initial display parameters of the preset light-emitting source of the ith color in the current frame is i =1,2, …, M, 1 is more than or equal to M and less than or equal to 3, and k is more than 0 and less than 1.
6. The method as claimed in claim 1, wherein after obtaining the target display parameter of the backlight unit according to the initial display parameter of the backlight unit, the method comprises:
for each backlight area, comparing the target brightness value of the backlight area in the current frame with the target brightness value of the backlight area in the previous frame, and correcting the target brightness value of the backlight area in the current frame once according to the comparison result;
and updating the target display parameters of the backlight area according to the target brightness value of the backlight area after the primary correction in the current frame to obtain the target display parameters of the backlight area after the primary correction.
7. The method as claimed in claim 6, wherein the comparing the target brightness value of the backlight area in the current frame with the target brightness value of the previous frame, and correcting the target brightness value of the backlight area in the current frame once according to the comparison result comprises:
comparing the target brightness value of the light-emitting source of the ith color in the current frame with the target brightness value of the previous frame, and if the absolute value of the difference between the target brightness value of the light-emitting source of the ith color in the current frame and the target brightness value of the previous frame is greater than the ith brightness value, correcting the target brightness value of the light-emitting source of the ith color in the current frame at one time;
the updating the target display parameter of the backlight area according to the target brightness value of the backlight area after the primary correction in the current frame to obtain the target display parameter of the backlight area after the primary correction includes:
updating the target display parameters of the light emitting sources with the ith color according to the target brightness value of the light emitting sources with the ith color after the primary correction at the current frame to obtain the target display parameters of the light emitting sources with the ith color after the primary correction;
wherein i =1,2, …, M, 1 is not less than M and not more than 3.
8. The method as claimed in claim 6, wherein the step of updating the target display parameter of the backlight area according to the target brightness value of the backlight area after the first modification in the current frame to obtain the target display parameter of the backlight area after the first modification comprises:
comparing the target brightness value of the backlight area after the primary correction in the current frame with the target brightness value of the first adjacent backlight area of the backlight area after the primary correction in the current frame, and secondarily correcting the target brightness value of the backlight area in the current frame according to the comparison result;
updating the target display parameters of the backlight area after the primary correction according to the target brightness value of the backlight area after the secondary correction in the current frame to obtain the target display parameters of the backlight area after the secondary correction;
the calculating the target display parameters of the display unit according to the target display parameters of the backlight unit comprises:
and calculating target display parameters of the display unit according to the target display parameters of the backlight area after secondary correction.
9. The method according to claim 8, wherein the comparing the target luminance value of the backlight region after the first correction in the current frame with the target luminance value of the first neighboring backlight region of the backlight region after the first correction in the current frame, and secondarily correcting the target luminance value of the backlight region in the current frame according to the comparison result comprises:
comparing the target brightness value of the light-emitting source of the ith color after primary correction with the target brightness value of the first adjacent backlight area of the light-emitting source of the ith color after primary correction, and if the absolute value of the difference between the target brightness value of the light-emitting source of the ith color after primary correction and the target brightness value of the first adjacent backlight area of the light-emitting source of the ith color after primary correction is greater than the M + i brightness value, secondarily correcting the target brightness value of the light-emitting source of the ith color in the current frame;
the updating the target display parameter of the backlight area after the primary correction according to the target brightness value of the backlight area after the secondary correction in the current frame to obtain the target display parameter of the backlight area after the secondary correction includes:
updating the target display parameters of the light-emitting sources with the ith color after the primary correction according to the target brightness value of the light-emitting sources with the ith color after the secondary correction at the current frame to obtain the target display parameters of the light-emitting sources with the ith color after the secondary correction;
wherein i =1,2, …, M, 1 is not less than M and not more than 3.
10. The display control method according to any one of claims 1 to 4, wherein the calculating the target display parameter of the display unit according to the target display parameter of the backlight unit includes:
for each pixel point of the display unit, calculating the total brightness contribution to the pixel area where the pixel point is located when a second adjacent backlight area of the backlight area corresponding to the pixel area where the pixel point is located is lighted;
obtaining a ratio between the total luminance value contribution and a total luminance value when all backlight areas of the backlight unit are simultaneously lit;
and acquiring the target display parameters of the pixel points in the current frame according to the ratio and the target display parameters of the backlight unit.
11. The method as claimed in claim 10, wherein said obtaining the target display parameter of the pixel point in the current frame according to the ratio and the target display parameter of the backlight unit comprises:
calculating the target display parameters of the pixel points in the current frame according to the ratio, the target display parameters of the backlight unit and a gray scale formula, wherein the gray scale formula is as follows:
GS’(x,y)=f3 -1(k(x,y)*f3(GS))；
wherein GS' (x, y) represents the target gray level value of the pixel point in the current frame, f3 -1() Represents an inverse function of a gamma curve function, k (x, y) represents the ratio, (x, y) represents coordinates of the pixel points in the display unit, f3() Representing said gamma curve function, f3(GS) represents a target luminance value of the backlight unit at the current frame, and GS represents a target gray-scale value of the backlight unit at the current frame.
12. A display device comprising a backlight unit, a display unit, a memory, a processor and a computer program stored in the memory and executable on the processor, the processor implementing the steps of the display control method according to any one of claims 1 to 11 when executing the computer program.
13. A computer-readable storage medium, in which a computer program is stored which, when being executed by a processor, carries out the steps of the display control method according to any one of claims 1 to 11.
CN202010800037.8A 2020-08-11 2020-08-11 Display control method, display device and computer readable storage medium Active CN111681620B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010800037.8A CN111681620B (en) 2020-08-11 2020-08-11 Display control method, display device and computer readable storage medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010800037.8A CN111681620B (en) 2020-08-11 2020-08-11 Display control method, display device and computer readable storage medium

Publications (2)

Publication Number Publication Date
CN111681620A CN111681620A (en) 2020-09-18
CN111681620B true CN111681620B (en) 2020-11-20

Family

ID=72458233

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010800037.8A Active CN111681620B (en) 2020-08-11 2020-08-11 Display control method, display device and computer readable storage medium

Country Status (1)

Country Link
CN (1) CN111681620B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112951168A (en) * 2021-02-09 2021-06-11 海信视像科技股份有限公司 Display apparatus and backlight control method
CN113990263B (en) * 2021-10-26 2022-11-01 Tcl华星光电技术有限公司 Backlight processing method and device for display screen, storage medium and electronic equipment
CN115657368B (en) * 2022-10-20 2024-01-19 中科芯集成电路有限公司 Display equipment area backlight adjusting method

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW200743067A (en) * 2006-05-05 2007-11-16 Benq Corp Portable electronic apparatus is capable of adjusting backlight automatically and adjusting method of backlight thereof
JP2008158224A (en) * 2006-12-22 2008-07-10 Toshiba Corp Liquid crystal display device and liquid crystal display control method
CN103377636B (en) * 2010-05-25 2015-06-17 友达光电股份有限公司 Method for regulating back light brightness
CN102402970B (en) * 2011-12-21 2014-08-20 Tcl王牌电器(惠州)有限公司 Method and device for adjusting contrast of display screen
CN103413536B (en) * 2013-08-22 2016-03-09 四川长虹电子系统有限公司 display energy-saving control method
CN107845366B (en) * 2016-09-19 2020-06-16 华为技术有限公司 Backlight adjusting method and device
CN106486070B (en) * 2016-11-25 2019-11-05 深圳Tcl新技术有限公司 Adjust the method and device of liquid crystal display screen backlight illumination
CN106710534A (en) * 2017-02-28 2017-05-24 青岛海信电器股份有限公司 Subregion backlight gain coefficient determination method and device and liquid crystal display device
JP2019113653A (en) * 2017-12-22 2019-07-11 キヤノン株式会社 Liquid crystal display device
CN111341275A (en) * 2019-12-31 2020-06-26 Tcl集团股份有限公司 Display control method, display device and storage medium

Also Published As

Publication number Publication date
CN111681620A (en) 2020-09-18

Similar Documents

Publication Publication Date Title
CN111681620B (en) Display control method, display device and computer readable storage medium
US10878762B2 (en) Luminance compensating method, luminance compensating device, display device and storage medium
US10249250B2 (en) Backlight control method, backlight module and display apparatus
CN103080999B (en) For having the self-adaptation color correction of the indicating meter of backlight modulation
CN110945582B (en) Sub-pixel rendering method, driving chip and display device
CN110473502A (en) Control method, device and the terminal device of screen intensity
US10937378B2 (en) Display panel and display method
US20090040243A1 (en) Display Device and Method for Driving Display Member
CN109308868B (en) Display panel driving method and system and display device
JP2010033055A (en) Method of boosting display image, controller unit for performing the method, and display apparatus having the controller unit
CN108122546B (en) Display apparatus and image processing method thereof
CN108962167B (en) Data processing method and device, driving method, display panel and storage medium
CN108596908B (en) LED display screen detection method and device and terminal
US8384731B2 (en) Color transformation method and corresponding color display method
CN111599324A (en) Display device
CN111341275A (en) Display control method, display device and storage medium
US8120627B2 (en) Redistribution of N-primary color input signals into N-primary color output signals
CN108269522B (en) Display device and image display method thereof
CN113823231A (en) Backlight control system of display and display
US10068535B2 (en) Display apparatus and driving method thereof
CN109461419B (en) Display data processing method and system and display device
CN116860143A (en) Image display processing method and device
CN110321907B (en) Data processing sequence determining method, display device and display method thereof
US20190080643A1 (en) Method and Device for Adjusting Uniformity, Apparatus, and Computer Readable Storage Medium
CN113129796B (en) Display device and rendering method thereof

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant