CN107909974B - Pixel compensation method and device and television - Google Patents

Pixel compensation method and device and television Download PDF

Info

Publication number
CN107909974B
CN107909974B CN201711166598.1A CN201711166598A CN107909974B CN 107909974 B CN107909974 B CN 107909974B CN 201711166598 A CN201711166598 A CN 201711166598A CN 107909974 B CN107909974 B CN 107909974B
Authority
CN
China
Prior art keywords
pixel
compensation
value
pixel compensation
compensated
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
CN201711166598.1A
Other languages
Chinese (zh)
Other versions
CN107909974A (en
Inventor
赵树斌
张盼涛
亓东欣
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.)
Hisense Visual Technology Co Ltd
Original Assignee
Hisense Visual Technology 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 Hisense Visual Technology Co Ltd filed Critical Hisense Visual Technology Co Ltd
Priority to CN201711166598.1A priority Critical patent/CN107909974B/en
Publication of CN107909974A publication Critical patent/CN107909974A/en
Application granted granted Critical
Publication of CN107909974B publication Critical patent/CN107909974B/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
    • G09G3/36—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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
    • H04N5/57—Control of contrast or brightness
    • 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
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0233—Improving the luminance or brightness uniformity across the screen

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)

Abstract

The embodiment of the invention provides a pixel compensation method, a pixel compensation device and a television, wherein the method comprises the following steps: acquiring a standard pixel compensation value corresponding to a pixel to be compensated in an image to be displayed, wherein the pixel to be compensated is any one pixel in the image to be displayed; acquiring a compensation sequence of pixel compensation of an image to be displayed in a current compensation time interval, wherein the compensation time interval is a time interval for continuously performing the pixel compensation; determining a pixel compensation value of a pixel to be compensated according to the standard pixel compensation value, the compensation sequence and the preset compensation times, wherein when the compensation sequence is less than the preset compensation times, the pixel compensation value is less than the standard pixel compensation value, and when the compensation sequence is greater than or equal to the preset compensation times, the pixel compensation value is equal to the standard pixel compensation value; and adjusting the pixel value of the pixel to be compensated according to the pixel compensation value of the pixel to be compensated. The brightness of the image displayed by the liquid crystal display is prevented from changing suddenly, and the pixel compensation effect is further improved.

Description

Pixel compensation method and device and television
Technical Field
The embodiment of the invention relates to the technical field of liquid crystal display, in particular to a pixel compensation method, a pixel compensation device and a television.
Background
At present, many electronic devices (such as televisions, computers, and the like) have liquid crystal displays, and due to defects in the manufacturing process and backlight design of the liquid crystal displays, the liquid crystal displays generally have a phenomenon of non-uniform brightness during image display, and the phenomenon of non-uniform brightness displayed by the liquid crystal panels is generally referred to as mura phenomenon.
In the prior art, in order to improve the uniformity of the brightness of the liquid crystal display to eliminate the mura phenomenon, demura processing may be performed on the liquid crystal panel or the entire liquid crystal display module to generate a pixel compensation table (demura table) corresponding to the liquid crystal display, and the pixel compensation table may be stored in a nonvolatile memory device, such as a flash chip, in the liquid crystal display. In the practical application process, after the liquid crystal display is started, the pixel compensation table is acquired and the backlight is turned on to display the image, after the pixel compensation table is acquired, the pixel compensation value corresponding to each pixel in the image to be displayed is acquired in the pixel compensation table, and the pixel compensation is performed on each pixel in the image according to the pixel compensation value corresponding to each pixel, so that the brightness of the displayed image is uniform.
However, in practical applications, the pixel compensation table is usually large, and therefore, it is possible that the whole compensation data table can be read only after the backlight is turned on and the image is displayed for a period of time, that is, after the liquid crystal display displays the image for a period of time, the pixel compensation is performed on the displayed image, so that the brightness of the image observed by the user may change suddenly, resulting in poor pixel compensation effect.
Disclosure of Invention
The embodiment of the invention provides a pixel compensation method, a pixel compensation device and a television, which can avoid the sudden change of the brightness of an image displayed by a liquid crystal display and further improve the pixel compensation effect.
In a first aspect, an embodiment of the present invention provides a pixel compensation method, including:
acquiring a standard pixel compensation value corresponding to a pixel to be compensated in an image to be displayed, wherein the pixel to be compensated is any one pixel in the image to be displayed;
acquiring a compensation sequence of pixel compensation on the image to be displayed in a current compensation time period, wherein the compensation time period is a time period for continuously performing the pixel compensation;
determining a pixel compensation value of the pixel to be compensated according to the standard pixel compensation value, the compensation sequence and a preset compensation frequency; wherein the pixel compensation value is less than the standard pixel compensation value when the compensation order is less than the preset compensation times, and the pixel compensation value is equal to the standard pixel compensation value when the compensation order is greater than or equal to the preset compensation times;
and adjusting the pixel value of the pixel to be compensated according to the pixel compensation value of the pixel to be compensated.
In a possible implementation manner, when the compensation order is less than the preset compensation times, the pixel compensation value corresponding to the compensation order N is less than the pixel compensation value corresponding to the compensation order M, and N is less than M.
In another possible implementation manner, when the compensation order is smaller than the preset compensation times, the determining the pixel compensation value of the pixel to be compensated according to the standard pixel compensation value, the compensation order, and the preset compensation times includes:
determining the ratio of the standard pixel compensation value to the preset compensation times as a unit pixel compensation value;
determining a product of the unit pixel compensation value and the compensation order as the pixel compensation value.
In another possible embodiment, the method further comprises:
acquiring the resource occupancy rate in a preset time period before the current time;
if the resource occupancy rate in the preset time period is increased progressively, determining a first moment when the resource occupancy rate is equal to a first threshold value;
and gradually canceling pixel compensation in a compensation canceling period corresponding to the first moment until the pixel compensation value of the image displayed at the first moment is zero.
In another possible embodiment, in a cancellation compensation period corresponding to the first time, cancelling pixel compensation step by step until a pixel compensation value of an image displayed at the first time is zero, further includes:
acquiring resource occupancy rate;
and starting pixel compensation when the resource occupancy rate is determined to be less than a second threshold value.
In another possible implementation manner, the obtaining a standard pixel compensation value corresponding to a pixel to be compensated in an image to be displayed includes:
acquiring a pixel value of the pixel to be compensated, a position of the pixel to be compensated in the image to be displayed and a plurality of pixel compensation tables corresponding to preset gray-scale values, wherein each pixel compensation table comprises a plurality of standard pixel compensation values of preset pixels;
determining a first pixel compensation table and a second pixel compensation table corresponding to the pixel value to be compensated according to the pixel value of the pixel to be compensated, wherein the pixel value corresponding to the first pixel compensation table is smaller than the pixel value of the pixel to be compensated, and the pixel value corresponding to the second pixel compensation table is larger than the pixel value of the pixel to be compensated;
determining a first reference pixel compensation value in the first pixel compensation table according to the position of the pixel to be compensated in the image to be displayed, and determining a first pre-estimated pixel compensation value of the pixel to be compensated according to the position of the pixel to be compensated in the image to be displayed and the first reference pixel compensation value;
determining a second reference pixel compensation value in the second pixel compensation table according to the position of the pixel to be compensated in the image to be displayed, and determining a second pre-estimated pixel compensation value of the pixel to be compensated according to the position of the pixel to be compensated in the image to be displayed and the second reference pixel compensation value;
and determining a standard pixel compensation value corresponding to the pixel to be compensated according to the pixel value of the pixel to be compensated, the pixel value corresponding to the first pixel compensation table, the pixel value corresponding to the second pixel compensation table, the first pre-estimated pixel compensation value and the second pre-estimated pixel compensation value.
In a second aspect, an embodiment of the present invention provides a pixel compensation apparatus, including a first obtaining module, a second obtaining module, a first determining module, and an adjusting module,
the first obtaining module is used for obtaining a standard pixel compensation value corresponding to a pixel to be compensated in an image to be displayed, wherein the pixel to be compensated is any one pixel in the image to be displayed;
the second obtaining module is configured to obtain a compensation sequence of pixel compensation performed on the image to be displayed within a current compensation period, where the compensation period is a period during which pixel compensation is continuously performed;
the first determining module is used for determining the pixel compensation value of the pixel to be compensated according to the standard pixel compensation value, the compensation sequence and the preset compensation times; wherein the pixel compensation value is less than the standard pixel compensation value when the compensation order is less than the preset compensation times, and the pixel compensation value is equal to the standard pixel compensation value when the compensation order is greater than or equal to the preset compensation times;
the adjusting module is used for adjusting the pixel value of the pixel to be compensated according to the pixel compensation value of the pixel to be compensated.
In a possible implementation manner, when the compensation order is less than the preset compensation times, the pixel compensation value corresponding to the compensation order N is less than the pixel compensation value corresponding to the compensation order M, and N is less than M.
In a possible implementation manner, when the compensation order is smaller than the preset compensation times, the first determining module is specifically configured to:
determining the ratio of the standard pixel compensation value to the preset compensation times as a unit pixel compensation value;
determining a product of the unit pixel compensation value and the compensation order as the pixel compensation value.
In another possible embodiment, the apparatus further comprises a third obtaining module and a second determining module, wherein,
the third acquisition module is used for acquiring the resource occupancy rate in a preset time period before the current time;
the second determining module is configured to determine a first moment at which the resource occupancy rate is equal to a first threshold value if the resource occupancy rate is increased within the preset time period;
the adjusting module is further configured to cancel pixel compensation step by step within a cancellation compensation period corresponding to the first time until a pixel compensation value of an image displayed at the first time is zero.
In another possible implementation manner, the third obtaining module is further configured to, within a cancellation compensation period corresponding to the first time, cancel pixel compensation step by step until the pixel compensation value of the image displayed at the first time is zero, and then obtain the resource occupancy rate;
the adjusting module is further configured to start pixel compensation when it is determined that the resource occupancy is less than a second threshold.
In another possible implementation manner, the first obtaining module is specifically configured to:
acquiring a pixel value of the pixel to be compensated, a position of the pixel to be compensated in the image to be displayed and a plurality of pixel compensation tables corresponding to preset gray-scale values, wherein each pixel compensation table comprises a plurality of standard pixel compensation values of preset pixels;
determining a first pixel compensation table and a second pixel compensation table corresponding to the pixel value to be compensated according to the pixel value of the pixel to be compensated, wherein the pixel value corresponding to the first pixel compensation table is smaller than the pixel value of the pixel to be compensated, and the pixel value corresponding to the second pixel compensation table is larger than the pixel value of the pixel to be compensated;
determining a first reference pixel compensation value in the first pixel compensation table according to the position of the pixel to be compensated in the image to be displayed, and determining a first pre-estimated pixel compensation value of the pixel to be compensated according to the position of the pixel to be compensated in the image to be displayed and the first reference pixel compensation value;
determining a second reference pixel compensation value in the second pixel compensation table according to the position of the pixel to be compensated in the image to be displayed, and determining a second pre-estimated pixel compensation value of the pixel to be compensated according to the position of the pixel to be compensated in the image to be displayed and the second reference pixel compensation value;
and determining a standard pixel compensation value corresponding to the pixel to be compensated according to the pixel value of the pixel to be compensated, the pixel value corresponding to the first pixel compensation table, the pixel value corresponding to the second pixel compensation table, the first pre-estimated pixel compensation value and the second pre-estimated pixel compensation value.
In a third aspect, an embodiment of the present invention further provides a television, where the television includes the pixel compensation device according to any one of the second aspects.
According to the pixel compensation method, the device and the television provided by the embodiment of the invention, when pixel compensation needs to be carried out on a pixel to be compensated in an image to be displayed, a standard pixel compensation value corresponding to the pixel to be compensated and a compensation sequence of the pixel compensation carried out on the image to be displayed in a current compensation period are firstly obtained, the pixel compensation value of the pixel to be compensated is determined according to the standard pixel compensation value, the compensation sequence and the preset compensation times, and the pixel value of the pixel to be compensated is adjusted according to the pixel compensation value of the pixel to be compensated, wherein when the compensation sequence is smaller than the preset compensation times, the pixel compensation value is smaller than the standard pixel compensation value, and when the compensation sequence is larger than or equal to the preset compensation times, the pixel compensation value is equal to the standard pixel compensation value. In the above process, the size of the pixel compensation value is gradually adjusted, so that after multiple times of pixel compensation, the pixel compensation value reaches the standard pixel compensation value, rather than directly setting the pixel compensation value as the standard pixel compensation value, that is, after multiple times of pixel compensation, the brightness of the image displayed by the liquid crystal display can be made uniform, the brightness of the image displayed by the liquid crystal display is prevented from being uniform through one time of pixel compensation, so that sudden change of the brightness of the image displayed by the liquid crystal display is avoided, and further the pixel compensation effect is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic view of an application scenario of a pixel compensation method according to an embodiment of the present invention;
FIG. 2 is a schematic flow chart illustrating a pixel compensation method according to an embodiment of the present invention;
FIG. 3 is a flowchart illustrating a method for obtaining a compensation value of a standard pixel according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a pixel of an LCD according to an embodiment of the present invention;
FIG. 5 is a flowchart illustrating a method for controlling pixel compensation turning on and off according to an embodiment of the present invention;
fig. 6 is a first schematic structural diagram of a pixel compensation device according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a pixel compensation device according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 is a schematic view of an application scenario of the pixel compensation method according to the embodiment of the present invention. Referring to fig. 1, the electronic device has a liquid crystal display (the electronic device is shown in the figure), the electronic device can display images through the liquid crystal display, and the electronic device can be a television, a computer, or other devices. After the electronic device obtains the pixel compensation table, in the process of displaying the image on the liquid crystal display, the electronic device gradually performs pixel compensation on the displayed image according to the pixel compensation table, that is, the electronic device performs pixel compensation on the displayed image for multiple times, and after the electronic device performs pixel compensation for multiple times, the brightness of the image displayed by the liquid crystal display is uniform.
For example, referring to fig. 1, assuming that the electronic device obtains the pixel compensation table at time t1, in the time period t1-t2, the electronic device compensates the image frames played in the time period by 30% of the size of the normal compensation data, so that the uniformity of the brightness of the image frames after the pixel compensation is improved, but the brightness of the image frames after the pixel compensation is not uniform yet. In the period t2-t3, the electronic device compensates the image frame played in the period by 60% of the normal compensation data size, so that the uniformity of the brightness of the image frame after pixel compensation is improved, but the brightness of the image frame after pixel compensation is not uniform yet. In the time period from t3 to t4, the electronic device compensates the image frames played in the time period according to the size of the normal compensation data, so that the brightness of the image frames displayed on the liquid crystal display is uniform. In a period after t4, the displayed image frames may be compensated by the normal compensation data size, so that the brightness of the displayed image frames may be uniform. In the process, the pixel compensation is performed on the image step by step, so that the brightness of the image displayed by the liquid crystal display is prevented from changing suddenly, and the pixel compensation effect is improved.
It should be noted that, when the liquid crystal display plays a video, in the present application, in order to compensate for image frames in the video, for convenience of description, the image frames in the video may also be referred to as a frame of image or an image.
The technical means shown in the present application will be described in detail below with reference to specific examples. It should be noted that the following embodiments may be combined with each other, and the description of the same or similar contents in different embodiments is not repeated.
Fig. 2 is a schematic flow chart of a pixel compensation method according to an embodiment of the present invention. Referring to fig. 2, the method may include:
s201, obtaining a standard pixel compensation value corresponding to a pixel to be compensated in an image to be displayed, wherein the pixel to be compensated is any pixel in the image to be displayed.
The execution main body of the embodiment of the invention can be an electronic device, and can also be a pixel compensation device arranged in the electronic device. Alternatively, the pixel compensation device may be implemented by software, or may be implemented by a combination of software and hardware.
The electronic device provided by the embodiment of the invention is provided with the liquid crystal display screen, before the liquid crystal display screen leaves a factory, a display area of the liquid crystal display screen can be photographed through a high-precision Charge Coupled Device (CCD) camera, then an image obtained by photographing is processed to obtain a compensation data table, and the pixel compensation table can comprise pixel compensation values of a plurality of preset pixels in the liquid crystal display screen. Alternatively, the pixel compensation table may be stored in a storage unit of the liquid crystal display, or may be stored in the electronic device.
Alternatively, the pixels spaced between every two adjacent preset pixels may be the same, for example, every two adjacent preset pixels may be spaced by 4 pixels, 8 pixels, and the like. For example, the preset pixels may be 1 st, 8 th, 16 th, 32 th, … … th pixels of the 1 st row, 1 st, 8 th, 16 th, 32 th, … … th pixels of the 8 th row, and the like in the liquid crystal display.
Alternatively, the pixel compensation value may be data in various forms, for example, at least three cases may be included:
the first possible scenario: the pixel compensation value may need to be adjusted to the target pixel value.
In this case, when performing pixel compensation, the pixel value of the corresponding pixel may be adjusted to the target pixel value directly. For example, if the target pixel value is 136, the pixel value of the corresponding pixel may be adjusted to 136 when performing pixel compensation.
The second possible scenario: the pixel compensation value may be a pixel value that needs to be adjusted.
Optionally, the pixel value to be adjusted may be a positive number or a negative number.
In this case, when performing pixel compensation, the pixel value of the corresponding pixel may be added to the pixel value to be adjusted. For example, if the pixel value to be adjusted is 8, 8 may be added to the pixel value of the corresponding pixel when performing pixel compensation.
A third possible scenario: the pixel compensation value may be a pixel ratio.
In this case, when pixel compensation is performed, the pixel value of the corresponding pixel may be multiplied by the pixel ratio. For example, if the pixel ratio is 1.2, the pixel value of the corresponding pixel may be multiplied by 1.2 when performing pixel compensation.
It should be noted that the pixel compensation value may also be other types of values, which is not specifically limited in this embodiment of the present invention.
Optionally, the pixel compensation table corresponding to the liquid crystal display may be generated through the following feasible implementation manners: before the liquid crystal display leaves a factory, a camera is arranged outside the liquid crystal display, and the camera can shoot pictures displayed by the liquid crystal display.
Displaying a gray scale picture corresponding to a first pixel gray scale value (for example, the gray scale value is 32) on the liquid crystal display, then shooting the gray scale picture through a camera, sampling the brightness of a preset gray scale in the gray scale picture, and determining a pixel compensation table corresponding to the first gray scale value according to the brightness of a display area obtained by sampling, wherein the pixel compensation table comprises the pixel compensation value of each preset pixel. For example, if the liquid crystal display includes 2160 × 3840 pixels, and sampling is performed every 8 pixels, the brightness of 271 × 481 sampled pixels is obtained, and accordingly, the pixel compensation value of 271 × 481 pixels is included in the pixel compensation table.
The liquid crystal display may further continue to display a gray scale image corresponding to the second gray scale value (for example, the gray scale value is 64), and the pixel compensation table corresponding to the second gray scale value is obtained by the above method.
Repeating the above process can obtain the pixel compensation table corresponding to a plurality of gray-scale values. For example, in practical application, pixel compensation tables with gray scale values of 32, 64, and 128 may be obtained.
It should be noted that, in the embodiment shown in fig. 3, a process of obtaining the standard pixel compensation value is described in detail.
S202, acquiring a compensation sequence of pixel compensation to be carried out on the image to be displayed in the current compensation period.
In practical applications, the electronic device may intermittently perform the pixel compensation after the electronic device starts to operate, for example, the electronic device may start the pixel compensation at a first time, pause the pixel compensation at a second time, start the pixel compensation at a third time, and so on.
The compensation period refers to a period during which the electronic device performs continuous pixel compensation. For example, assuming that the electronic device starts pixel compensation at 10 o 'clock, pauses pixel compensation at 10 o' clock 40, starts pixel compensation at 10 o 'clock 45, and pauses pixel compensation at 11 o' clock 30, 10 o 'clock to 10 o' clock 40 is a compensation period, and 10 o 'clock 45 to 11 o' clock 30 is a compensation period.
The compensation order means that the pixel compensation to be performed on the image to be displayed is the pixel compensation of the second time in the current compensation period. For example, assuming that the pixel compensation for the image to be displayed is the 5 th pixel compensation within the current compensation time, the compensation order for the pixel compensation for the image to be displayed within the current compensation period is 5.
S203, determining a pixel compensation value of the pixel to be compensated according to the standard pixel compensation value, the compensation sequence and the preset compensation times, wherein the pixel compensation value is smaller than or equal to the standard pixel compensation value.
When the compensation sequence is less than the preset compensation times, the pixel compensation value is less than the standard pixel compensation value, and when the compensation sequence is greater than or equal to the preset compensation times, the pixel compensation value is equal to the standard pixel compensation value.
Optionally, when the compensation sequence is less than the preset compensation times, the pixel compensation value corresponding to the compensation sequence N is less than the pixel compensation value corresponding to the compensation sequence M, and N is less than M.
Optionally, in the embodiment of the present invention, the preset compensation number is greater than or equal to 2, for example, the preset compensation number may be 3, 4, and the like, and in an actual application process, the preset compensation number may be set according to an actual need, which is not specifically limited in the embodiment of the present invention.
Optionally, after the preset compensation times of sub-pixel compensation are continuously performed in one compensation period, the brightness of the image displayed by the liquid crystal display can be made uniform. For example, assuming that the preset compensation time is 4, after the pixel compensation is started, the brightness of the image displayed by the liquid crystal display can be made uniform after the pixel compensation is continuously performed for 4 times.
Optionally, when the compensation order is less than the preset compensation times, the pixel compensation value of the pixel to be compensated may be determined by the following feasible implementation manners: and determining the ratio of the standard pixel compensation value to the preset compensation times as a unit pixel compensation value, and determining the product of the unit pixel compensation value and the compensation sequence as a pixel compensation value.
For example, assuming that the standard pixel compensation value of the pixel to be compensated in the image to be displayed is 8, the preset compensation number of times is 4, and the compensation sequence for performing pixel compensation on the image to be displayed in one compensation period is 3, the pixel compensation value of the pixel to be displayed is: 3 × 8/4 ═ 6.
And S204, adjusting the pixel value of the pixel to be compensated according to the pixel compensation value of the pixel to be compensated.
Optionally, the pixel value of the pixel to be compensated may be adjusted according to the type of the pixel compensation value. And when the pixel compensation value is the target pixel value, adjusting the pixel value of the pixel to be compensated to the target pixel value. And when the pixel compensation value is the pixel value needing to be adjusted, adding the pixel value of the pixel to be compensated with the pixel value needing to be adjusted. And when the pixel compensation value is the pixel ratio, the pixel value of the pixel to be compensated is processed into the pixel ratio.
It should be noted that, for any pixel in any image that needs to be displayed on the liquid crystal display, pixel compensation can be performed by the method shown in the embodiment of fig. 2, and a description thereof is omitted here.
The pixel compensation method provided by the embodiment of the invention includes the steps of when pixel compensation needs to be carried out on a pixel to be compensated in an image to be displayed, firstly obtaining a standard pixel compensation value corresponding to the pixel to be compensated and a compensation sequence of pixel compensation carried out on the image to be displayed in a current compensation period, determining a pixel compensation value of the pixel to be compensated according to the standard pixel compensation value, the compensation sequence and preset compensation times, and adjusting the pixel value of the pixel to be compensated according to the pixel compensation value of the pixel to be compensated, wherein when the compensation sequence is smaller than the preset compensation times, the pixel compensation value is smaller than the standard pixel compensation value, and when the compensation sequence is larger than or equal to the preset compensation times, the pixel compensation value is equal to the standard pixel compensation value. In the above process, the size of the pixel compensation value is gradually adjusted, so that after multiple times of pixel compensation, the pixel compensation value reaches the standard pixel compensation value, rather than directly setting the pixel compensation value as the standard pixel compensation value, that is, after multiple times of pixel compensation, the brightness of the image displayed by the liquid crystal display can be made uniform, the brightness of the image displayed by the liquid crystal display is prevented from being uniform through one time of pixel compensation, so that sudden change of the brightness of the image displayed by the liquid crystal display is avoided, and further the pixel compensation effect is improved.
On the basis of the embodiment shown in fig. 2, optionally, the standard pixel compensation value corresponding to the pixel to be compensated may be obtained through the following feasible implementation manner (S201 in the embodiment shown in fig. 2), specifically, please refer to the embodiment shown in fig. 3.
Fig. 3 is a flowchart illustrating a method for obtaining a standard pixel compensation value according to an embodiment of the present invention. Referring to fig. 3, the method may include:
s301, obtaining a pixel value of a pixel to be compensated, a position of the pixel to be compensated in an image to be displayed, and a pixel compensation table corresponding to a plurality of preset gray-scale values, wherein each pixel compensation table comprises a plurality of standard pixel compensation values of preset pixels.
Optionally, the position of the pixel to be compensated in the image to be displayed may be the pixel coordinate of the pixel to be compensated in the image to be displayed, for example, assuming that the pixel to be compensated is the 23 rd pixel of the 11 th row of the image to be displayed, the position of the pixel to be compensated in the image to be displayed may be (23, 11).
Optionally, the pixel compensation table corresponding to the plurality of preset gray scale values may be: a pixel compensation table corresponding to a gray level value 32, a pixel compensation table corresponding to a gray level value 64, and a pixel compensation table corresponding to a gray level value 128. Of course, in the actual application process, the plurality of preset gray scale values and the pixel compensation table corresponding to the plurality of preset gray scale values may be set according to actual needs.
S302, according to the pixel value of the pixel to be compensated, a first pixel compensation table and a second pixel compensation table corresponding to the pixel value to be compensated are determined, the pixel value corresponding to the first pixel compensation table is smaller than the pixel value of the pixel to be compensated, and the pixel value corresponding to the second pixel compensation table is larger than the pixel value of the pixel to be compensated.
Optionally, the pixel value of the pixel to be compensated is located between the pixel value corresponding to the first pixel compensation table and the pixel value corresponding to the second pixel compensation table.
For example, assuming that the pixel value of the pixel to be compensated is 65 and the plurality of preset gray-scale values are 32, 64 and 128, respectively, the first pixel compensation table is the pixel compensation table corresponding to the gray-scale value 64, and the second pixel compensation table is the pixel compensation table corresponding to the gray-scale value 128.
S303, determining a first reference pixel compensation value in the first pixel compensation table according to the position of the pixel to be compensated in the image to be displayed, and determining a first estimated pixel compensation value of the pixel to be compensated according to the position of the pixel to be compensated in the image to be displayed and the first reference pixel compensation value.
The method for determining the first estimated pixel compensation value will be described in detail with reference to fig. 4.
Fig. 4 is a schematic diagram of a pixel of a liquid crystal display according to an embodiment of the invention. Referring to fig. 4, the lcd includes a plurality of pixels, wherein a square represents a pixel.
It is assumed that the squares with diagonal line filling in the figure are sampled pixels, i.e., the standard pixel compensation values for the pixels are included in the pixel compensation table. Referring to fig. 4, the pixel compensation table includes standard pixel compensation values of pixels with pixel coordinates (0,0), (4,0), (8,0) … … (0,4), (4,4), and so on.
And when the pixel to be compensated is positioned on the pixel row where the sampling pixel is positioned, determining the standard pixel compensation value of two adjacent sampling pixels at the left and the right of the pixel to be compensated as the first reference pixel compensation value. For example, assuming that the coordinate of the pixel to be compensated is (6,0), and the pixel to be compensated is located in the pixel row where the sampling pixel is located, the standard pixel compensation value of the sampling pixels (4,0) and (8,0) is determined as the first reference pixel compensation value, and the first estimated pixel compensation value is determined according to the distance between the pixel to be compensated (6,0) and the sampling pixels (4,0) and (8,0), for example, assuming that the standard pixel compensation value of the sampling pixel (4,0) is 8 and the standard pixel compensation value of the sampling pixel (8,0) is 10, the first estimated pixel compensation value of the pixel to be compensated (6,0) is (8+10)/2 ═ 9.
And when the pixel to be compensated is positioned in the pixel column where the sampling pixel is positioned, determining the standard pixel compensation value of two adjacent sampling pixels above and below the pixel to be compensated as the first reference pixel compensation value. For example, assuming that the coordinate of the pixel to be compensated is (4,6), and the pixel to be compensated is located in the pixel column where the sampling pixel is located, the standard pixel compensation value of the sampling pixels (4,4) and (4,8) is determined as the first reference pixel compensation value, and the first estimated pixel compensation value is determined according to the distance between the pixel to be compensated (4,6) and the sampling pixels (4,4) and (4,8), for example, assuming that the standard pixel compensation value of the sampling pixel (4,4) is 8, and the standard pixel compensation value of the sampling pixel (4,8) is 10, the first estimated pixel compensation value of the pixel to be compensated (4,6) is (8+10)/2 is 9.
And when the pixel to be compensated is not in the pixel row and the pixel column where the sampling pixel is located, determining the standard pixel compensation value of the four sampling pixels closest to the pixel to be compensated as the first reference pixel compensation value. For example, assuming that the coordinate of the pixel to be compensated is (2, 2), the standard pixel compensation value of the sampling pixel (0,0), (4,0), (0,4), (4,4) is determined as the first reference pixel compensation value, and the first estimated pixel compensation value is determined according to the distance between the pixel to be compensated (2, 2) and the sampling pixel (0,0), (4,0), (0,4), (4, 4).
S304, according to the position of the pixel to be compensated in the image to be displayed, a second reference pixel compensation value is determined in a second pixel compensation table, and according to the position of the pixel to be compensated in the image to be displayed and the second reference pixel compensation value, a second pre-estimated pixel compensation value of the pixel to be compensated is determined.
It should be noted that, the process of determining the second predicted pixel compensation value may refer to the process of determining the first predicted pixel compensation value in S303, and details are not repeated here.
S305, determining a standard pixel compensation value corresponding to the pixel to be compensated according to the pixel value of the pixel to be compensated, the pixel value corresponding to the first pixel compensation table, the pixel value corresponding to the second pixel compensation table, the first pre-estimated pixel compensation value and the second pre-estimated pixel compensation value.
Optionally, according to the pixel value of the pixel to be compensated, the pixel value corresponding to the first pixel compensation table, and the pixel value corresponding to the second pixel compensation table, a first distance between the pixel value of the pixel to be compensated and the pixel value corresponding to the first pixel compensation table, and a second distance between the pixel value of the pixel to be compensated and the pixel value corresponding to the second pixel compensation table may be determined, and the standard pixel compensation value may be determined according to the first distance, the second distance, the first estimated pixel compensation value, and the second estimated pixel compensation value.
For example, assuming that the first distance is 100, the second distance is 28, the first predicted pixel compensation value is 8, and the second predicted pixel compensation value is 20, the standard pixel compensation value corresponding to the pixel to be compensated is:
Figure BDA0001476323340000131
in the embodiment shown in fig. 3, it is not necessary to store the pixel compensation table corresponding to each pixel value in advance, and it is also not necessary to include the standard pixel compensation values of all pixels in one pixel compensation table, so that the size of the pixel compensation table stored in advance can be reduced. In the process, the standard pixel compensation value of any pixel can be accurately determined by a difference value method and the standard pixel compensation value of less pixels in the less pixel compensation table.
On the basis of any of the above embodiments, when a counter control Register (TCON) of the electronic device runs more functions at the same time, the resource occupancy rate of a BandWidth (BW) may be too high, and thus a TCON fault may be caused. In the embodiment of the present invention, in order to reduce the probability of the TCON failure, the on and off of the pixel compensation can be flexibly controlled, specifically, please refer to the embodiment shown in fig. 5.
Fig. 5 is a flowchart of a method for controlling pixel compensation turning on and off according to an embodiment of the present invention. Referring to fig. 5, the method may include:
s501, acquiring the resource occupancy rate in a preset time period before the current time.
It is assumed that the electronic device is performing pixel compensation before S501.
Optionally, the resource occupancy may be BW resource occupancy.
Optionally, the preset time period may be 5 seconds, 10 seconds, 1 minute, and the like before the current time, and certainly, in the actual application process, the preset time period may be set according to actual needs, which is not specifically limited in the embodiment of the present invention.
S502, if the resource occupancy rate in the preset time period is increased progressively, determining a first moment when the resource occupancy rate is equal to a first threshold value.
Alternatively, the preset time period may be a time period before the current time. For example, assuming that the current time is t1, the preset time period may be t0-t 1. In the actual application process, the duration of the preset time period can be set according to actual needs.
Optionally, the first threshold may be 90%, 98%, and the like, and in an actual application process, the first threshold may be set according to actual needs, which is not specifically limited in this embodiment of the present invention.
Optionally, the resource occupancy rates of multiple times in the preset time period may be obtained, and whether the resource occupancy rates of the multiple times are increased progressively is determined, if yes, the resource occupancy rates in the preset time period are determined to be increased progressively.
Optionally, the incremental increase of the resource occupancy rate in the preset time period may be: and continuously increasing the resource occupancy rate in the preset time period. For example, for any mth time and nth time within the preset time period, assuming that M is greater than N, the resource occupancy rate at the M time is greater than the resource occupancy rate at the nth time.
Optionally, the incremental increase of the resource occupancy rate in the preset time period may also be: and the resource occupancy rate in the preset time period is increased discontinuously. For example, the resource occupancy rates within the preset period of time are in an overall increasing trend, but there is a decreasing or constant resource occupancy rate at individual times.
Optionally, because the resource occupancy rate in the preset time period is incremented, and it is inferred that the resource occupancy rate is also incremented according to the incrementing rate in the time duration after the current time, the first time at which the resource occupancy rate reaches the first threshold value can be estimated according to the resource occupancy rate and the incrementing rate at the current time.
For example, assume that the current time is t1The preset time period is t0-t1. And then, assuming that the resource occupancy rate in the preset time period is increased progressively, the increasing rate V of the resource occupancy rate in the preset time period, and assuming that the increasing rate V of the resource occupancy rate in the time length after the current time is also V. Then, assume that the resource occupancy rate at the current time is P, and the first threshold is P1The first time t can be determined according to the following formula one2：
Figure BDA0001476323340000141
And S503, gradually canceling pixel compensation in a compensation canceling period corresponding to the first moment until the pixel compensation value of the image displayed at the first moment is zero.
Optionally, the cancellation compensation cycle corresponding to the first time is a time period between the first time and the first time.
For example, assuming that the cancellation compensation period is 1 second, and assuming that the first time is 10 minutes and 11 seconds, the cancellation compensation period corresponding to the first time is 10 minutes and 10 seconds to 10 minutes and 11 seconds.
It should be noted that, the process of gradually canceling pixel compensation in the embodiment of the present invention is an inverse process of the process of gradually performing pixel compensation in the embodiment shown in fig. 2, and details are not repeated here.
And S504, at a second moment after the first moment, if the resource occupancy rate is less than a second threshold value, starting to perform pixel compensation.
After S503, the resource occupancy rate may also be obtained in real time or periodically, and when it is determined that the resource occupancy rate is smaller than the second threshold, pixel compensation is started.
Optionally, the second threshold may be 80%, 75%, and the like, and in an actual application process, the second threshold may be set according to actual needs, which is not specifically limited in this embodiment of the present invention.
The technical solutions shown in the above method embodiments are described in detail below by specific examples.
For example, assuming that the electronic device is a television, after the television is turned on, a backlight in the television is turned on and a picture display is started, and at the same time, the television also acquires a pixel compensation table stored in advance, and performs pixel compensation after acquiring the pixel compensation table.
It is assumed that the preset compensation times is 3 times, that is, after the pixel compensation is continuously performed three times, the brightness of the image displayed by the television can be made uniform.
Assume that the television is acquired at time t1 to obtain the pixel compensation table, and the images to be displayed during the time period t1-t2 are image frame 1-image frame 2. The television compensates the image frames 1-2 by the following method, wherein the method for compensating the image frames 1 and 2 by the television is the same, and the following process of compensating the image frames 1 by the television is taken as an example to be described below: the method comprises the steps that a standard pixel compensation value corresponding to each pixel in an image frame 1 is obtained by a television (the standard pixel compensation value is assumed to be a pixel value required to be adjusted by the television), since the compensation sequence of the image frame 1 in a current compensation period is 1 (less than 3), the standard pixel compensation value corresponding to each pixel is divided by 3 to obtain a pixel compensation value of each pixel in each image frame 1, then the pixel compensation value of each pixel in the image frame 1 is added to the corresponding pixel compensation value to realize the pixel compensation of the image frame 1, after the pixel compensation is carried out on the image frame 1, the uniformity of the brightness of the image frame 1 displayed by the television is improved, but the brightness of the image frame 1 displayed by the television is not uniform.
Assuming that the images to be displayed in the period t2-t3 are image frames 3-5, the television compensates the image frames 3-5 by the following method, wherein the method for compensating the image frames 3-5 by the television is the same, and the following process for compensating the image frames 3 by the television is taken as an example: the method includes the steps that a standard pixel compensation value corresponding to each pixel in an image frame 3 is obtained by a television (assuming that the standard pixel compensation value is a pixel value required to be adjusted by the television), since a compensation sequence of the image frame 3 in a current compensation period is 2 (less than 3), the standard pixel compensation value corresponding to each pixel is divided by 3 and multiplied by 2 to obtain a pixel compensation value of each pixel in each image frame 3, then the pixel compensation value of each pixel in the image frame 3 is added to the corresponding pixel compensation value to realize the pixel compensation of the image frame 3, after the pixel compensation is carried out on the image frame 3, the uniformity of the brightness of the image frame 3 displayed by the television is improved, but the brightness of the image frame 3 displayed by the television is still uneven.
Assuming that the images to be displayed in the period t3-t4 are image frames 6-8, the television compensates the image frames 6-8 by the following method, wherein the method for compensating the image frames 6-8 by the television is the same, and the following process for compensating the image frames 6 by the television is taken as an example: the television acquires a standard pixel compensation value corresponding to each pixel in the image frame 6 (assuming that the standard pixel compensation value is a pixel value required to be adjusted by the television), since the compensation sequence of the image 3 in the current compensation period is 3 (equal to 3), and assuming that the standard pixel compensation value is a pixel value required to be adjusted by the television, the standard pixel compensation value corresponding to each pixel is determined as a pixel compensation value of the corresponding pixel, then the pixel value of each pixel of the image frame 6 is respectively added with the corresponding pixel compensation value to realize pixel compensation on the image frame 6, and after the pixel compensation is performed on the image frame 6, the brightness of the image frame 6 displayed by the television is uniform.
And in a period after the moment 4, if the BW resource occupancy rates are all smaller than a second threshold, performing pixel compensation according to the pixel compensation methods of the image frames 6-8.
Assuming that the BW resource occupancy will reach the first threshold at the time 5 before the time 5, the pixel compensation is cancelled step by step within the cancellation compensation period before the time 5 until the pixel compensation value of the image displayed by the television is zero at the time 5.
After time 5, if the BW resource occupancy is smaller than the second threshold, the pixel compensation is restarted.
In the process, pixel compensation is performed step by step, so that after pixel compensation is performed for multiple times, the brightness of the image displayed by the liquid crystal display is uniform, sudden change of the brightness of the image displayed by the liquid crystal display is avoided, and the pixel compensation effect is improved.
Fig. 6 is a first schematic structural diagram of a pixel compensation device according to an embodiment of the present invention. Referring to fig. 6, the apparatus may include a first obtaining module 11, a second obtaining module 12, a first determining module 13 and an adjusting module 14, wherein,
the first obtaining module 11 is configured to obtain a standard pixel compensation value corresponding to a pixel to be compensated in an image to be displayed, where the pixel to be compensated is any one pixel in the image to be displayed;
the second obtaining module 12 is configured to obtain a compensation sequence of pixel compensation performed on the image to be displayed in a current compensation time period, where the compensation time period is a time period during which pixel compensation is continuously performed;
the first determining module 13 is configured to determine a pixel compensation value of the pixel to be compensated according to the standard pixel compensation value, the compensation sequence, and a preset compensation number; wherein the pixel compensation value is less than the standard pixel compensation value when the compensation order is less than the preset compensation times, and the pixel compensation value is equal to the standard pixel compensation value when the compensation order is greater than or equal to the preset compensation times;
the adjusting module 14 is configured to adjust a pixel value of the pixel to be compensated according to the pixel compensation value of the pixel to be compensated.
The pixel compensation device provided by the embodiment of the present invention can implement the technical solutions shown in the above method embodiments, and the implementation principles and beneficial effects thereof are similar, and are not described herein again.
In a possible implementation manner, when the compensation order is less than the preset compensation times, the pixel compensation value corresponding to the compensation order N is less than the pixel compensation value corresponding to the compensation order M, and N is less than M.
In a possible implementation manner, when the compensation sequence is less than the preset compensation times, the first determining module 13 is specifically configured to:
determining the ratio of the standard pixel compensation value to the preset compensation times as a unit pixel compensation value;
determining a product of the unit pixel compensation value and the compensation order as the pixel compensation value.
Fig. 7 is a schematic structural diagram of a pixel compensation device according to an embodiment of the present invention. On the basis of the embodiment shown in fig. 6, please refer to fig. 7, the apparatus further includes a third obtaining module 15 and a second determining module 16, wherein,
the third obtaining module 15 is configured to obtain a resource occupancy rate in a preset time period before the current time;
the second determining module 16 is configured to determine a first moment at which the resource occupancy rate is equal to a first threshold value if the resource occupancy rate in the preset time period is increased progressively;
the adjusting module 14 is further configured to cancel pixel compensation step by step in a compensation canceling period corresponding to the first time until a pixel compensation value of an image displayed at the first time is zero.
In another possible implementation manner, the third obtaining module 15 is further configured to, within a cancellation compensation period corresponding to the first time, cancel pixel compensation step by the adjusting module 14 until the pixel compensation value of the image displayed at the first time is zero, and then obtain the resource occupancy rate;
the adjusting module 14 is further configured to start pixel compensation when it is determined that the resource occupancy is smaller than a second threshold.
In another possible implementation, the first obtaining module 11 is specifically configured to:
acquiring a pixel value of the pixel to be compensated, a position of the pixel to be compensated in the image to be displayed and a plurality of pixel compensation tables corresponding to preset gray-scale values, wherein each pixel compensation table comprises a plurality of standard pixel compensation values of preset pixels;
determining a first pixel compensation table and a second pixel compensation table corresponding to the pixel value to be compensated according to the pixel value of the pixel to be compensated, wherein the pixel value corresponding to the first pixel compensation table is smaller than the pixel value of the pixel to be compensated, and the pixel value corresponding to the second pixel compensation table is larger than the pixel value of the pixel to be compensated;
determining a first reference pixel compensation value in the first pixel compensation table according to the position of the pixel to be compensated in the image to be displayed, and determining a first pre-estimated pixel compensation value of the pixel to be compensated according to the position of the pixel to be compensated in the image to be displayed and the first reference pixel compensation value;
determining a second reference pixel compensation value in the second pixel compensation table according to the position of the pixel to be compensated in the image to be displayed, and determining a second pre-estimated pixel compensation value of the pixel to be compensated according to the position of the pixel to be compensated in the image to be displayed and the second reference pixel compensation value;
and determining a standard pixel compensation value corresponding to the pixel to be compensated according to the pixel value of the pixel to be compensated, the pixel value corresponding to the first pixel compensation table, the pixel value corresponding to the second pixel compensation table, the first pre-estimated pixel compensation value and the second pre-estimated pixel compensation value.
The pixel compensation device provided by the embodiment of the present invention can implement the technical solutions shown in the above method embodiments, and the implementation principles and beneficial effects thereof are similar, and are not described herein again.
An embodiment of the present invention further provides a television, which includes the pixel compensation device shown in fig. 6 or fig. 7.
Those of ordinary skill in the art will understand that: all or a portion of the steps of implementing the above-described method embodiments may be performed by hardware associated with program instructions. The program may be stored in a computer-readable storage medium. When executed, the program performs steps comprising the method embodiments described above; and the aforementioned storage medium includes: various media that can store program codes, such as ROM, RAM, magnetic or optical disks.
Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the embodiments of the present invention, and are not limited thereto; although embodiments of the present invention have been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the embodiments of the present invention.

Claims (8)

1. A pixel compensation method, comprising:
acquiring a standard pixel compensation value corresponding to a pixel to be compensated in an image to be displayed, wherein the pixel to be compensated is any one pixel in the image to be displayed;
acquiring a compensation sequence of pixel compensation on the image to be displayed in a current compensation time period, wherein the compensation time period is a time period for continuously performing pixel compensation;
determining a pixel compensation value of the pixel to be compensated according to the standard pixel compensation value, the compensation sequence and a preset compensation frequency; wherein the pixel compensation value is less than the standard pixel compensation value when the compensation order is less than the preset compensation times, and the pixel compensation value is equal to the standard pixel compensation value when the compensation order is greater than or equal to the preset compensation times;
adjusting the pixel value of the pixel to be compensated according to the pixel compensation value of the pixel to be compensated;
the method further comprises the following steps:
acquiring the resource occupancy rate in a preset time period before the current time;
if the resource occupancy rate in the preset time period is increased progressively, determining a first moment when the resource occupancy rate is equal to a first threshold value;
and gradually canceling pixel compensation in a compensation canceling period corresponding to the first moment until the pixel compensation value of the image displayed at the first moment is zero.
2. The method of claim 1, wherein when the compensation order is less than the predetermined compensation times, a compensation value of a pixel corresponding to a compensation order N is less than a compensation value of a pixel corresponding to a compensation order M, and the N is less than the M.
3. The method according to claim 1 or 2, wherein when the compensation order is smaller than the preset number of compensation times, the determining the pixel compensation value of the pixel to be compensated according to the standard pixel compensation value, the compensation order, and the preset number of compensation times comprises:
determining the ratio of the standard pixel compensation value to the preset compensation times as a unit pixel compensation value;
determining a product of the unit pixel compensation value and the compensation order as the pixel compensation value.
4. The method according to claim 1, wherein the pixel compensation is gradually cancelled in a cancellation compensation period corresponding to the first time until after a pixel compensation value of an image displayed at the first time is zero, further comprising:
acquiring resource occupancy rate;
and starting pixel compensation when the resource occupancy rate is determined to be less than a second threshold value.
5. A pixel compensation apparatus comprises a first obtaining module, a second obtaining module, a first determining module and an adjusting module, wherein,
the first obtaining module is used for obtaining a standard pixel compensation value corresponding to a pixel to be compensated in an image to be displayed, wherein the pixel to be compensated is any one pixel in the image to be displayed;
the second obtaining module is configured to obtain a compensation sequence of pixel compensation performed on the image to be displayed within a current compensation period, where the compensation period is a period during which pixel compensation is continuously performed;
the first determining module is used for determining the pixel compensation value of the pixel to be compensated according to the standard pixel compensation value, the compensation sequence and the preset compensation times; wherein the pixel compensation value is less than the standard pixel compensation value when the compensation order is less than the preset compensation times, and the pixel compensation value is equal to the standard pixel compensation value when the compensation order is greater than or equal to the preset compensation times;
the adjusting module is used for adjusting the pixel value of the pixel to be compensated according to the pixel compensation value of the pixel to be compensated;
the apparatus further comprises a third obtaining module and a second determining module, wherein,
the third acquisition module is used for acquiring the resource occupancy rate in a preset time period before the current time;
the second determining module is configured to determine a first moment at which the resource occupancy rate is equal to a first threshold value if the resource occupancy rate is increased within the preset time period;
the adjusting module is further configured to cancel pixel compensation step by step within a cancellation compensation period corresponding to the first time until a pixel compensation value of an image displayed at the first time is zero.
6. The apparatus of claim 5, wherein when the compensation order is less than the predetermined compensation times, a compensation value of a pixel corresponding to a compensation order N is less than a compensation value of a pixel corresponding to a compensation order M, and N is less than M.
7. The apparatus according to claim 5 or 6, wherein when the compensation order is smaller than the preset compensation times, the first determining module is specifically configured to:
determining the ratio of the standard pixel compensation value to the preset compensation times as a unit pixel compensation value;
determining a product of the unit pixel compensation value and the compensation order as the pixel compensation value.
8. A television comprising a pixel compensation arrangement according to any one of claims 5 to 7.
CN201711166598.1A 2017-11-21 2017-11-21 Pixel compensation method and device and television Active CN107909974B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201711166598.1A CN107909974B (en) 2017-11-21 2017-11-21 Pixel compensation method and device and television

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201711166598.1A CN107909974B (en) 2017-11-21 2017-11-21 Pixel compensation method and device and television

Publications (2)

Publication Number Publication Date
CN107909974A CN107909974A (en) 2018-04-13
CN107909974B true CN107909974B (en) 2020-09-08

Family

ID=61846683

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201711166598.1A Active CN107909974B (en) 2017-11-21 2017-11-21 Pixel compensation method and device and television

Country Status (1)

Country Link
CN (1) CN107909974B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20210018576A (en) * 2019-08-05 2021-02-18 삼성전자주식회사 Electronic device for compensating pixel value of image
WO2021243562A1 (en) * 2020-06-02 2021-12-09 Qualcomm Incorporated Compensating for pixel decay for a display
CN112102775B (en) * 2020-09-11 2022-01-11 Oppo广东移动通信有限公司 Display device and brightness compensation method thereof
CN113096576B (en) * 2021-04-02 2023-05-26 京东方科技集团股份有限公司 Brightness compensation method and device and display device
CN115691390B (en) * 2022-11-02 2023-09-26 上海傲显科技有限公司 Display panel compensation method and device and display device

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102855842B (en) * 2012-09-04 2015-06-17 京东方科技集团股份有限公司 Method and device for displaying and controlling images
JP6426102B2 (en) * 2012-11-05 2018-11-21 ユニバーシティー オブ フロリダ リサーチ ファウンデーション，インコーポレイテッドＵｎｉｖｅｒｓｉｔｙ Ｏｆ Ｆｌｏｒｉｄａ Ｒｅｓｅａｒｃｈ Ｆｏｕｎｄａｔｉｏｎ，Ｉｎｃ． Brightness compensation in a display
CN103489420A (en) * 2013-09-03 2014-01-01 深圳市华星光电技术有限公司 Method for driving liquid crystal panel, liquid crystal display device and method for compensating light spots
CN104021759A (en) * 2014-05-30 2014-09-03 京东方科技集团股份有限公司 Luminance supplementing method and device for display device, and display device
CN104538005A (en) * 2014-12-16 2015-04-22 深圳市金立通信设备有限公司 Method for adjusting screen brightness
CN104992657B (en) * 2015-07-27 2017-09-22 京东方科技集团股份有限公司 Mura compensating modules and method, display device and method
CN105590606B (en) * 2016-03-09 2018-05-01 深圳市华星光电技术有限公司 Mura phenomenon compensation methodes
CN105741762B (en) * 2016-03-31 2018-01-30 深圳市华星光电技术有限公司 The method for eliminating OLED display panel Mura
CN106448618B (en) * 2016-12-16 2019-08-06 北京小米移动软件有限公司 Luminance compensation method, luminance compensating mechanism and electronic equipment
CN106847157B (en) * 2017-03-24 2020-01-21 上海天马有机发光显示技术有限公司 Brightness compensation method and device of display panel

Also Published As

Publication number Publication date
CN107909974A (en) 2018-04-13

Similar Documents

Publication Publication Date Title
CN107909974B (en) Pixel compensation method and device and television
US10636345B2 (en) Method of compensating in display panel, driving unit and display panel
US9406263B2 (en) Method and apparatus for controlling a backlight brightness according to average grayscales
US10170063B2 (en) Mura compensation method for display panel and display panel
EP3151539A1 (en) Image acquisition device, image acquisition method and terminal
JP2020518863A (en) Display panel unevenness correction method and display panel
CN107203056B (en) Mura processing method for ultrahigh-resolution panel
KR20190052195A (en) Method of compensating for non-uniformity of luminance of a display panel and display device employing the same
US9837011B2 (en) Optical compensation system for performing smear compensation of a display device and optical compensation method thereof
EP3514787A1 (en) Sink device and liquid crystal display device including the same
CN110796979B (en) Driving method and driving device of display panel
US10204577B2 (en) Driving method, driving circuit and display apparatus
JP2010057149A (en) Image correction data generation system, image correction data generation method, image correction data generation program, and image correction circuit
KR102577591B1 (en) Display apparatus and method of driving the same
CN108810318B (en) Image processing method, image processing device, display device and computer storage medium
CN105959584B (en) A kind of image processing method, image processing apparatus and display device
JP2018530776A5 (en)
CN112767891B (en) Mura compensation method, display panel and display device
US20180183947A1 (en) Display apparatus and control method thereof
CN113470581A (en) Method and device for controlling backlight brightness of display, electronic equipment and storage medium
CN111968557A (en) Compensation method and compensation system of backlight module
US20130162698A1 (en) Image processing apparatus, projector and image processing method
CN114495812A (en) Display panel brightness compensation method and device, electronic equipment and readable storage medium
CN110291574B (en) Display device
US20180096640A1 (en) Information outputting method, electronic equipment, and displaying apparatus

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
CB02 Change of applicant information

Address after: 266555 Qingdao economic and Technological Development Zone, Shandong, Hong Kong Road, No. 218

Applicant after: Hisense Visual Technology Co., Ltd.

Address before: 266100 Zhuzhou Road, Laoshan District, Shandong, No. 151, No.

Applicant before: QINGDAO HISENSE ELECTRONICS Co.,Ltd.

CB02 Change of applicant information
GR01 Patent grant
GR01 Patent grant