CN114203086B - Thermal compensation correction method, device and equipment - Google Patents

Thermal compensation correction method, device and equipment Download PDF

Info

Publication number
CN114203086B
CN114203086B CN202111460596.XA CN202111460596A CN114203086B CN 114203086 B CN114203086 B CN 114203086B CN 202111460596 A CN202111460596 A CN 202111460596A CN 114203086 B CN114203086 B CN 114203086B
Authority
CN
China
Prior art keywords
display unit
data
thermal compensation
cold screen
subunit
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
CN202111460596.XA
Other languages
Chinese (zh)
Other versions
CN114203086A (en
Inventor
何国经
欧兴涛
从洪春
杨城
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.)
Xian Novastar Electronic Technology Co Ltd
Original Assignee
Xian Novastar Electronic 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 Xian Novastar Electronic Technology Co Ltd filed Critical Xian Novastar Electronic Technology Co Ltd
Priority to CN202111460596.XA priority Critical patent/CN114203086B/en
Publication of CN114203086A publication Critical patent/CN114203086A/en
Application granted granted Critical
Publication of CN114203086B publication Critical patent/CN114203086B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
    • 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
    • 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
    • G09G2320/04—Maintaining the quality of display appearance
    • G09G2320/041—Temperature compensation

Abstract

The application relates to the technical field of display, and provides a thermal compensation correction method, a thermal compensation correction device and thermal compensation correction equipment, which are applied to a display unit, wherein the display unit comprises a plurality of subunits, each subunit in the plurality of subunits stores a cold screen correction coefficient, and the display effect of the display unit can be improved, and the method comprises the following steps: acquiring a cold screen correction coefficient of each subunit, wherein the cold screen correction coefficient is determined according to initial data and target data of the subunits in a cold screen state, and the initial data comprises at least one of initial brightness, initial chromaticity and initial brightness; acquiring a thermal compensation coefficient of the display unit, wherein the thermal compensation coefficient is obtained based on at least one of target data of the first display unit and data of the first display unit in a cold screen state and data when the first display unit reaches a thermal equilibrium state; and correcting the display unit according to the thermal compensation coefficient of the display unit and the cold screen correction coefficient of each subunit.

Description

Thermal compensation correction method, device and equipment
Technical Field
The present application relates to the field of display technologies, and in particular, to a method, an apparatus, and a device for thermal compensation correction.
Background
With the development of display technology and the popularization of application of display screens, people also put higher and higher demands on the display quality of the display screens. The more uniform the luminosity of the display screen, the higher the display quality of the display screen, and the better the display effect of the display screen. However, in the actual use process, it is not difficult to find that the luminosity of the display screen is easy to be influenced by temperature to change, so that the display effect of the display screen is poor. Therefore, how to improve the uniformity of the luminance of the display screen and the display effect of the display screen become a research hot spot in the field.
Disclosure of Invention
The embodiment of the application aims to provide a thermal compensation correction method, a thermal compensation correction device and thermal compensation correction equipment, which can improve the luminance uniformity of a display screen and the display effect of the display screen.
An embodiment of the present application is achieved by a first aspect, and the embodiment of the present application provides a method for thermal compensation correction, applied to a display unit, where the display unit includes a plurality of sub-units, and each of the plurality of sub-units stores a cold screen correction coefficient, the method including: acquiring a cold screen correction coefficient of each subunit, wherein the cold screen correction coefficient is determined according to initial data and target data of the subunits in a cold screen state, and the initial data comprises at least one of initial brightness, initial chromaticity and initial brightness;
The method comprises the steps of obtaining a thermal compensation coefficient of a display unit, wherein the thermal compensation coefficient is based on at least one of target data of the first display unit and data of the first display unit in a cold screen state and data obtained when the first display unit reaches a thermal equilibrium state, the first display unit is the display unit, or the first display unit is a sample display unit corresponding to the display unit, and the target correction coefficient of the display unit is obtained according to the thermal compensation coefficient of the display unit and the cold screen correction coefficient of each subunit, and is used for correcting the display unit.
In the method for thermal compensation correction provided by the embodiment of the application, after each subunit is spliced into the display unit, the cold screen correction coefficient and the thermal compensation coefficient which are respectively corresponding to each subunit when the whole display unit is in different states are collected, and the data of each subunit are corrected based on the cold screen correction coefficient and the thermal compensation coefficient of each subunit, so that each subunit can be displayed with target data when the whole display unit is in a thermal balance state, and the correction of the whole display unit is realized.
On one hand, in the thermal compensation correction method provided by the application, the cold screen correction coefficient and the thermal compensation coefficient of each subunit are collected when the whole display unit is in a cold screen state and a thermal balance state after the subunits are spliced into the display unit, so that after the respective data are corrected by the respective cold screen correction coefficient and the thermal compensation coefficient of each subunit, each subunit can be displayed by target data when the whole display unit is in the thermal balance state, thereby ensuring the luminosity uniformity of the whole display unit and improving the display effect.
On the other hand, in the method for thermal compensation correction provided by the application, the respective data are corrected by utilizing the respective cold screen correction coefficients and the thermal compensation coefficients of the sub-units, so that each sub-unit can be displayed in target data when the whole display unit is in a thermal balance state no matter how the splicing sequence of the sub-units in the display unit is changed. Therefore, the display units do not need to be spliced according to the fixed templates, and the display units can be flexibly spliced.
In one embodiment, the cold screen correction coefficient is determined according to initial data and target data of the subunit in a cold screen state, and includes:
the cold screen correction coefficient is determined according to initial data and target data of three primary colors of the subunit in a cold screen state;
and/or, the thermal compensation coefficient is obtained based on at least one of target data of the first display unit and data of the first display unit in a cold screen state, and data when the first display unit reaches a thermal equilibrium state, including:
the thermal compensation coefficient is based on at least one of target data of the first display unit and three primary color data of the first display unit in a cold screen state, and the three primary color data when the first display unit reaches a thermal equilibrium state.
The cold screen correction coefficient determined by the initial data and the target data of the three primary colors in the cold screen state and/or the thermal compensation coefficient determined by the target data of the first display unit and the data of the three primary colors when the first display unit reaches the thermal equilibrium state are used for correcting the display unit together, the optical display data of the three primary colors are fully used for correcting the display unit, the influence of a plurality of colors in the three primary colors and a plurality of data in the initial data on the actual display data of the display unit is considered, the display variability of each subunit in the display unit is reduced, and the correction accuracy of the display unit is improved.
In one embodiment, before acquiring the cold screen correction coefficient of each subunit, the method further includes:
determining a cold screen correction coefficient of each subunit according to initial data and target data of each subunit in a cold screen state, and storing the cold screen correction coefficient into each subunit;
acquiring cold screen correction coefficients of each subunit, including:
and respectively acquiring the cold screen correction coefficient of each subunit from each subunit.
In the above embodiment, when the display unit is actually corrected, the cold screen correction coefficient corresponding to each subunit is directly obtained from each subunit, so that the time for obtaining the cold screen correction coefficient of the subunit can be effectively shortened, and the correction efficiency of the display unit is accelerated.
In one embodiment, before obtaining the thermal compensation coefficient of the display unit, the method further comprises:
determining a thermal compensation coefficient of the display unit according to at least one of target data of the first display unit and data of the first display unit in a cold screen state and data when the first display unit reaches a thermal equilibrium state, and storing the thermal compensation coefficient into control equipment corresponding to the display unit;
acquiring a thermal compensation coefficient of a display unit, comprising:
the thermal compensation coefficient of the display unit is obtained from a control device of the display unit.
In the embodiment, the thermal compensation coefficient of the display unit is acquired from the control equipment of the display unit, so that the thermal compensation coefficient of the display unit is conveniently acquired when the display unit is corrected, and the speed of correcting the display unit is increased.
In one embodiment, according to the thermal compensation coefficient of the display unit and the cold screen correction coefficient of each subunit, a target correction coefficient of the display unit is obtained, where the target correction coefficient is used for correcting the display unit, and the method includes:
Obtaining a target correction coefficient according to the product of the thermal compensation coefficient and the cold screen correction coefficient;
and correcting the display unit according to the target correction coefficient.
The target correction coefficients for correcting the display units are determined by acquiring the cold screen correction coefficients and the thermal compensation coefficients corresponding to the display units in different states, and after each subunit in the display units is corrected by the target correction coefficients, the target data can be displayed when the display units are in a thermal balance state no matter how the splicing order of the subunits in the display units changes, so that the display units do not need to be spliced according to a fixed template, and the display units can be flexibly spliced.
In one embodiment, the method for determining the thermal compensation coefficient is as follows: c_h=t_o_h -1 Wherein, C_h represents a thermal compensation coefficient, T represents target data of the first display unit, and O_h represents data when the first display unit reaches a thermal equilibrium state after cold screen correction;
alternatively, c_h=o_c_o_h -1 Wherein c_h represents a thermal compensation coefficient, o_c represents data of the first display unit in a cold screen state, and o_h represents data when the first display unit reaches a thermal equilibrium state without correcting the first display unit.
The embodiment comprises two different methods for determining the thermal compensation coefficient, and the thermal compensation coefficient of the display unit can be obtained by different methods according to different practical application scenes, so that the determination mode of the thermal compensation coefficient is further expanded.
In one embodiment, after obtaining the thermal compensation coefficient of the display unit, the method further comprises:
and preprocessing the thermal compensation coefficient by adopting a noise reduction algorithm or a smoothing algorithm to obtain the preprocessed thermal compensation coefficient. The influence of abnormal data on the thermal compensation coefficient is avoided, the effectiveness of the thermal compensation coefficient is improved, and the accuracy of correcting the display unit is further improved.
In one embodiment, the display unit is a box, and the subunit is a lamp panel;
or the display unit is a bracket, and the subunit is a box body or a lamp panel;
alternatively, the display unit is a thermal cycle unit.
In this embodiment, if the display unit is a box, and the subunit is a lamp panel, after the obtained cold screen correction coefficient of each lamp panel and the thermal compensation coefficient of the box are utilized to correct the data of each lamp panel in the box, each lamp panel can be displayed with target data when the whole box is in a thermal balance state, so that the uniformity of the luminosity of the whole box is effectively ensured, and the display effect of the box is improved.
If the display unit is a bracket, the subunits are the box bodies or the lamp panels, and the acquired cold screen correction coefficients of the box bodies or the lamp panels and the thermal compensation coefficients of the bracket are utilized to correct the data of the box bodies or the lamp panels in the bracket, so that when the whole bracket is in a thermal balance state, each box body or lamp panel can be displayed by target data, the luminance uniformity of the whole bracket is effectively ensured, and the display effect of the bracket is improved.
Similarly, if the display unit is a thermal cycle unit, the obtained target correction coefficient of the thermal cycle unit can be used for correcting the data of each subunit in the thermal cycle unit, so that each subunit in the thermal cycle unit can be displayed by the target data when the whole thermal cycle unit is in a thermal balance state, the luminosity uniformity of the whole thermal cycle unit is ensured, and the display effect of the thermal cycle unit is improved.
In a second aspect, an embodiment of the present application provides a thermal compensation correction device applied to a display unit, where the display unit includes a plurality of sub-units, and each of the plurality of sub-units stores a cold screen correction coefficient, the device includes:
The first acquisition unit is used for acquiring a cold screen correction coefficient of each subunit, wherein the cold screen correction coefficient is determined according to initial data and target data of the subunits in a cold screen state, and the initial data comprises at least one of initial brightness, initial chromaticity and initial brightness;
the second acquisition unit is used for acquiring a thermal compensation coefficient of the display unit, wherein the thermal compensation coefficient is obtained based on at least one of target data of the first display unit and data of the first display unit in a cold screen state and data when the first display unit reaches a thermal equilibrium state, and the first display unit is the display unit or a sample display unit corresponding to the first display unit;
the correction unit is used for obtaining a target correction coefficient of the display unit according to the thermal compensation coefficient of the display unit and the cold screen correction coefficient of each subunit, and the target correction coefficient is used for correcting the display unit.
In a third aspect, embodiments of the present application provide a thermal compensation correction device, the device comprising: a processor and a memory for storing a computer program, the processor for calling and running the computer program from the memory, causing the apparatus to perform the method of any of the first aspects.
In a fourth aspect, embodiments of the present application provide a computer readable storage medium having a computer program stored therein, which when executed by a processor, causes the processor to perform the method of any of the first aspects.
In a fifth aspect, embodiments of the present application provide a computer program product comprising: computer program code which, when run by a computer, causes the computer to perform the method of any of the first aspects.
It will be appreciated that the advantages of the second to fifth aspects may be found in the relevant description of the first aspect, and are not described here again.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a flow chart of a method for thermal compensation correction according to an embodiment of the present application;
FIG. 2 is a schematic diagram of a thermal compensation calibration apparatus according to an embodiment of the present application;
fig. 3 is a schematic structural diagram of a thermal compensation correction device according to an embodiment of the present application.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present application more apparent, the embodiments of the present application will be described in further detail with reference to the accompanying drawings.
With the development of display technology and the popularization of application of display screens, people also put higher and higher demands on the display quality of the display screens. The more uniform the luminosity of the display screen, the higher the display quality of the display screen, and the better the display effect of the display screen. However, in the actual use process, it is not difficult to find that the luminosity of the display screen is easy to be influenced by temperature to change, so that the display effect of the display screen is poor. Therefore, how to improve the luminance uniformity of the display screen and the display effect of the display screen become a research hot spot in the field.
An example is a light emitting diode (Light Emitting Diode, LED) display. The LED display screen is widely applied to various life scenes such as traffic lights, literature assembly and the like because of the characteristics of small power consumption, wide visual range, high resolution and the like. People usually adopt a thermal compensation correction method and a method for establishing a conversion matrix to improve the luminance uniformity of the LED display screen and improve the display effect of the LED display screen.
The thermal compensation correction method is to preheat each lamp panel or box body forming the LED display screen, and correct each lamp panel or box body after the lamp panels or box bodies reach a thermal balance state. The method has the advantages that the preheating time is long, the correction efficiency is low, and after the lamp panels or the box bodies are spliced into the LED display screen, the heating condition of the lamp panels or the box bodies in the heat balance state of the LED display screen can be changed, so that the luminance uniformity of the LED display screen can not reach the expected effect after the lamp panels or the box bodies are spliced into the LED display screen.
The method for establishing the conversion matrix is to establish a conversion matrix between cold screen data and hot screen data of a corresponding established lamp panel (or box), that is, taking a box as an example, the method for establishing the conversion matrix is to firstly collect cold screen data of the box, then collect hot screen data of the box after the box reaches a heat balance state, and establish the conversion matrix between the cold screen data and the hot screen data according to the collected cold screen data of the box and the hot screen data of the box. On the one hand, the method for establishing the corresponding conversion matrix needs to splice the lamp panels or the box bodies according to a fixed sequence, so that the LED display screen cannot be spliced flexibly. On the other hand, if a plurality of cases are used to splice the LED display screen, but the cases are not spliced in the order corresponding to the conversion matrix, the LED display screen spliced by the cases cannot be corrected by using the above-described conversion matrix since the splice order of the cases does not correspond to the conversion matrix. If the sequence of the splicing box body is changed, the corresponding conversion matrix is also changed, and the LED display screen is corrected by using the non-corresponding conversion matrix, so that the corrected LED display screen still cannot achieve the expected correction effect.
In order to improve the uniformity of the luminance of a display screen and improve the display effect of the display screen, after all the subunits are spliced into the display unit, the cold screen correction coefficients and the thermal compensation coefficients respectively corresponding to all the subunits when the whole display unit is in different states are collected, and the data are corrected based on the cold screen correction coefficients and the thermal compensation coefficients respectively of all the subunits, so that each subunit can display target data when the whole display unit is in a thermal balance state, and the correction of the display unit is completed.
On one hand, in the thermal compensation correction method provided by the application, the cold screen correction coefficient and the thermal compensation coefficient of each subunit are collected when the whole display unit is in a cold screen state and a thermal balance state after the subunits are spliced into the display unit, so that after the respective data are corrected by the respective cold screen correction coefficient and the thermal compensation coefficient of each subunit, each subunit can be displayed by target data when the whole display unit is in the thermal balance state, thereby ensuring the luminosity uniformity of the whole display unit and improving the display effect.
On the other hand, in the method for thermal compensation correction provided by the application, the respective data are corrected by utilizing the respective cold screen correction coefficients and the thermal compensation coefficients of the sub-units, so that each sub-unit can be displayed in target data when the whole display unit is in a thermal balance state no matter how the splicing sequence of the sub-units in the display unit is changed. Therefore, the display units do not need to be spliced according to the fixed templates, and the display units can be flexibly spliced.
The method for thermal compensation correction provided by the embodiment of the application can be applied to various application scenes, for example, can be applied to correction scenes of LED display screens on automatic production lines, and can also be applied to correction scenes related to other display units in support of future, and the application is not limited in any way.
It is to be understood that the method of the present application may be used to calibrate a display unit, which may be an LED display unit, a liquid crystal display (Liquid Crystal Display, LCD) display unit, an Organic Light-Emitting Diode (OLED) display unit, or the like.
It should be noted that, the execution main body of the thermal compensation correction method provided by the application may be a terminal device associated with a display unit to be corrected, that is, in a correction scene based on the above automatic production line for an LED display screen, the display unit to be corrected is the LED display screen, and the terminal device associated with the LED display screen may be a notebook computer, a palm computer, a personal computer (Personal Computer, PC), a tablet computer, a mobile phone, and other devices. It should be understood that the application scenario is different, and the display unit to be corrected and the terminal device may be different.
An exemplary method of thermal compensation correction provided by the present application will be described below using an LED display unit as an example.
Before explaining the embodiments of the present application, the related contents about the LED display screen will be described.
Generally, an LED display screen is a screen body formed by splicing a plurality of light panels, where the light panels are the smallest units that form the LED display screen, and one light panel includes a plurality of LED light beads, and the specific number of LED light beads in one light panel is determined according to practical application conditions.
The box body (namely the LED box body) is a screen body formed by splicing a plurality of lamp panels. The number of the lamp panels spliced into the box body can be determined according to actual application requirements. For example, in real life, most LED display screen manufacturers splice 6 light panels to form a box, and some LED display screen manufacturers splice 4 light panels to form a box.
The bracket (namely the LED bracket) is a screen body formed by splicing a plurality of box bodies. The number of the boxes spliced into the LED brackets can be determined according to actual application requirements. For example, according to the actual use requirement, most LED display screen manufacturers splice 2 boxes to form a bracket.
Correspondingly, an LED display screen can be formed by splicing a plurality of brackets, so that the LED display screen can be divided into the lamp panels, the box body, the brackets and the LED display screen from small to large in sequence according to the number of the lamp panels.
It should be noted that a memory device is typically disposed on the lamp panel. For example, the Memory device may be a Flash Memory, that is, flash, which is used for data storage, and the data stored in Flash is not lost due to power failure. In order to ensure the security of the stored data, the Memory devices generally arranged on the lamp panel include, but are not limited to, flash or Read-Only Memory (ROM) nonvolatile Memory devices, and the actual application requirements may be different for different Memory devices arranged in the lamp panel.
Correspondingly, depending on the actual use, a receiving card is usually provided in a carrier or a receiving card is provided in a housing. The receiving card is also called a control card and is used for receiving instructions sent by a personal computer (Personal Computer, PC) or application software and decoding the received instructions to control the on or off of the LEDs in the LED display screen.
The correction process for the LED display screen is essentially to improve the uniformity of the luminosity of the LED display screen, reduce the display variability of each LED in the LED display screen, namely, adjust the display data (namely pixel points) of the lamp beads in each lamp panel on the LED display screen, so that the luminosity of each LED in the LED display screen is more uniform, the image picture displayed by the LED display screen is finer and finer, and the display effect of the LED display screen is improved.
The technical scheme of the application is described in detail below with reference to the accompanying drawings. The embodiments described below by referring to the drawings are illustrative and intended to explain the present application and should not be construed as limiting the application.
In a possible implementation manner, as shown in fig. 1, a flowchart of a method for thermal compensation correction provided by an embodiment of the present application is shown, and referring to fig. 1, the method is applied to a display unit, where the display unit includes a plurality of sub-units, and a cold screen correction coefficient is stored in each of the plurality of sub-units.
For example, when the method is applied to a correction scene of an LED display screen on an automatic production line, the display unit may refer to the LED display screen, and the sub-units may be the lamp panels spliced into the LED display screen.
The thermal compensation correction method comprises the following steps S101-S103.
S101, acquiring a cold screen correction coefficient of each subunit, wherein the cold screen correction coefficient is determined according to initial data and target data of the subunits in a cold screen state, and the initial data comprises at least one of initial brightness, initial chromaticity and initial brightness.
The cold screen state refers to a state when the ambient temperature of the display unit or the subunit is room temperature.
The initial data includes at least one of an initial luminance of the display subunit, an initial chromaticity of the display subunit, and an initial luminance chromaticity of the display subunit.
The target data is data manually preset to make the display effect of each sub-unit in the display unit the same. The target data includes at least one of an initial luminance, an initial chromaticity, and an initial luminance chromaticity corresponding to the initial data. It is to be understood that the target data is data corresponding to the initial data.
It should be noted that the present application is not limited to the expression form of the target data, and the expression form of the target data may be direct target display data according to different practical application scenarios, for example, the display unit displays the target brightness value 5; the representation form of the target data may also be a gray scale value, for example, a gray scale value corresponding to green in the display unit is 128; the expression form of the target data may be other values capable of representing the display brightness of the display unit.
In the embodiment of the application, in order to accurately correct the LED display unit, to improve the display effect of the corrected LED display unit, the cold screen correction coefficient is determined according to the initial data and the target data of the subunit in the cold screen state, and the method comprises the following steps: the cold screen correction coefficient is determined according to the initial data and the target data of the three primary colors of the subunit in the cold screen state.
Wherein the three primary colors refer to red, green and blue. The initial data includes initial luminance and chrominance data corresponding to three colors of the three primary colors, and the corresponding target data includes target luminance and chrominance data corresponding to three colors of the three primary colors.
According to different practical application conditions, the initial data can be initial brightness data of three primary colors corresponding to the display subunit; the initial chromaticity data of the three primary colors corresponding to the display subunit; it may also be the initial luminance and chrominance data of the three primary colors corresponding to the display sub-unit.
In one possible embodiment, the initial data may also be initial data of at least one of any one of three primary colors, any two colors, and three colors. That is, taking initial luminance data in the initial data as an example, the initial data may be initial luminance data corresponding to any one color of the three primary colors of the display subunit, may be initial luminance data corresponding to any two colors of the three primary colors of the display subunit, or may be initial luminance data corresponding to three colors of the three primary colors of the display subunit; taking initial chroma data in the initial data as an example, the initial data can be initial chroma data corresponding to any one color in three primary colors of the display subunit, can be initial chroma data corresponding to any two colors in the three primary colors of the display subunit, and can also be initial chroma data corresponding to three colors in the three primary colors of the display subunit; taking the initial luminance and chrominance data in the initial data as an example, the initial data may be initial luminance and chrominance data corresponding to any one color of the three primary colors of the display subunit, may be initial luminance and chrominance data corresponding to any two colors of the three primary colors of the display subunit, and may also be initial luminance and chrominance data corresponding to three colors of the three primary colors of the display subunit.
Illustratively, taking one pixel point a1 of the sub-unit a in the display unit as an example, the luminance data of green in the target data. Assume that the preset target luminance value of green of the pixel point a1 is 5. Then, according to the actual test, when the luminance initial data corresponding to green of the pixel point a1 is set to 10, the actual display luminance can reach the target luminance value 5 when the pixel point a1 is displaying green in the cold screen state of the display unit. Therefore, when the initial data of green of the pixel a1 is 10, the pixel a1 is displayed with the target luminance value 5 when the display unit is in the cold screen state. Thus, the cold screen correction coefficient corresponding to the pixel point a1 is 0.5.
It is to be understood that the method for acquiring the initial data of the three primary colors of the sub-units in the cold screen state may be to directly acquire the initial data corresponding to each sub-unit in the display unit in the cold screen state through the camera. The initial data of the sub-unit in the cold screen state can also be directly obtained according to the configuration information of the manufacturer in the process of producing the display unit. The initial data of each subunit in the cold-screen state may also be obtained by other means.
For example, in order to avoid the influence on the correction of the display unit to be corrected due to the acquisition of the initial data corresponding to the display unit to be corrected in the cold screen state, the initial data corresponding to each subunit in the display unit to be corrected in the cold screen state can be acquired by performing initial data acquisition on the template display unit corresponding to the display unit to be corrected, wherein parameters such as the type, the production batch, the specification and the like of each subunit in the template display unit are the same as those of the display unit to be corrected.
In one possible implementation manner, in order to shorten the time for obtaining the cold screen correction coefficient of each subunit, speed up the correction efficiency of the display unit, and before obtaining the cold screen correction coefficient of each subunit, the method for thermal compensation correction provided by the embodiment of the application further includes: and determining a cold screen correction coefficient of each subunit according to the initial data and the target data of each subunit in the cold screen state, and respectively storing the cold screen correction coefficient into each subunit. In step S101, obtaining a cold screen correction coefficient of the subunit includes: and respectively acquiring the cold screen correction coefficient of each subunit from each subunit.
That is, when the display unit is corrected, the cold screen correction coefficients corresponding to the respective sub-units are directly obtained from the memory device (for example, flash) corresponding to each sub-unit.
S102, acquiring a thermal compensation coefficient of a display unit, wherein the thermal compensation coefficient is obtained based on at least one of target data of the first display unit and data of the first display unit in a cold screen state and data when the first display unit reaches a thermal equilibrium state, and the first display unit is a display unit or a sample display unit corresponding to the display unit.
It is understood that the thermal equilibrium state refers to a state in which the thermal distribution and the maximum temperature of the display unit are not changed after the display unit is turned on, where sources of temperature include, but are not limited to, heat generated by a lamp bead in the display unit, heat generated by a circuit, heat generated by a driving chip, heat generated by a memory device, and heat generated by a power supply.
The target data is data manually preset to make the display effect of each sub-unit in the display unit or the sample display unit the same. It will be understood that when the first display unit is a display unit, the target data is target data corresponding to the sub-units when the cold screen correction coefficients of the sub-units in the display unit are obtained, that is, data manually preset to make the display effect of each sub-unit in the display unit the same.
It should be noted that, the obtaining mode of the thermal compensation coefficient corresponding to the display unit may be that the target data of the display unit and the data when the display unit reaches the thermal equilibrium state are directly collected for determining; the determination may be performed by acquiring target data of a sample display unit and data when the sample display unit reaches a thermal equilibrium state, wherein the sample display unit is the same as the display unit in terms of various parameters such as type, production lot, specification, and the like, or the display unit is equivalent to the sample display unit within an error allowable range.
Correspondingly, in the embodiment of the present application, in order to accurately correct the LED display unit, to improve the display effect of the corrected LED display unit, the thermal compensation coefficient is obtained based on at least one of target data of the first display unit and data of the first display unit in a cold screen state, and data when the first display unit reaches a thermal equilibrium state, including: the thermal compensation coefficient is based on at least one of target data of the first display unit and three primary color data of the first display unit in a cold screen state, and the three primary color data when the first display unit reaches a thermal equilibrium state.
And (3) correcting the display unit by utilizing the cold screen correction coefficient determined by the initial data and the target data of the three primary colors in the cold screen state and/or utilizing at least one of the target data of the first display unit and the three primary colors data of the first display unit in the cold screen state and the thermal compensation coefficient determined by the data of the three primary colors when the first display unit reaches the thermal balance state, and correcting the display unit by fully utilizing the optical display data of the three primary colors, wherein the influence of a plurality of colors in the three primary colors and a plurality of data in the initial data on the actual display data of the display unit is considered, thereby being beneficial to reducing the display variability of each subunit in the display unit and improving the correction accuracy of the display unit.
Taking a pixel of a subunit in a display unit as an example, the process of obtaining the thermal compensation coefficient includes: assuming that the acquired cold-screen correction coefficient of the pixel is c_c, in the cold-screen state, the initial data (for example, initial brightness) of the pixel is o_c, that is, it may be determined that the target data (for example, target brightness) T corresponding to the pixel corresponds to the following formula (1) according to the cold-screen correction coefficient c_c and the optical data o_c:
T＝C_c*O_c (1)
in the formula (1), when the target data of the pixel includes the bright and chroma data of three colors of the three primary colors, c_c may represent the cold screen correction coefficient corresponding to the pixel by using a matrix of 3*3; o_c may represent the initial data of the pixel by a matrix of 3*3, and the initial data includes the luminance data and the chrominance data of three colors of the three primary colors, that is, the luminance data and the chrominance data representing the three primary colors.
If the data of the pixel in the subunit is o_h and the thermal compensation coefficient corresponding to the pixel is c_h after the display unit is defined to be subjected to cold screen correction by the cold screen correction coefficient, the target data T may be as shown in formula (2):
T＝C_h*O_h (2)
transforming the above formula (2) can obtain:
C_h＝T*O_h -1 (3)
the thermal compensation coefficient c_h corresponding to the pixel when the thermal balance is reached can be determined according to the formula (3).
Based on the above example, it is assumed that one pixel point a1 of the sub-unit a in the display unit is also taken as an example of the luminance data of green in the target data. The target brightness value corresponding to the green of the pixel point a1 is preset to be 5, according to the actual test, when the initial data of the brightness corresponding to the green of the pixel point a1 is 10, when the display unit reaches the thermal balance state, the brightness value actually displayed by the pixel point a1 changes from the initial data 10 to 9 when the pixel point a1 displays the green, which indicates that the pixel point a1 generates thermal attenuation in the process of reaching the thermal balance, and the thermal attenuation amount is 10% according to the test, namely, the thermal attenuation is 90% of the initial configuration value. That is, when the target luminance value corresponding to the pixel point a1 is set to 5, the display luminance value corresponding to the pixel point a1 after the heat balance is reached is correspondingly converted to 90% of the target luminance value 5, that is, to 4.5 under the influence of the temperature factor.
Thus, if the pixel point a1 is still displayed with the target brightness value 5, the corresponding thermal compensation coefficient can be calculated as. Therefore, the thermodynamic compensation coefficient can be obtained according to the target data and the data when the display unit reaches the thermal equilibrium state after the display unit is subjected to cold screen correction.
In the present application, the initial data may include at least one of an initial luminance, an initial chromaticity and an initial luminance chromaticity, and the difficulty level of obtaining three kinds of data in the initial data in the actual application process is different. Since the brightness data in the initial data can be directly acquired by using the camera, and the acquired brightness data corresponds to a specific numerical value, when the initial data is the initial brightness, another possible implementation manner can be used to acquire the thermal compensation coefficient corresponding to the display unit.
Taking a pixel of a subunit in a display unit as an example, another embodiment for obtaining a thermal compensation coefficient of the display unit includes the following formula (4):
C_h＝O_c*o_h -1 (4)
in the above formula (4), c_h represents a thermal compensation coefficient, o_c represents data of the display unit in a cold screen state, and o_h represents data when the display unit reaches a thermal equilibrium state in a case where the display unit is not corrected.
Based on the above example, it is assumed that one pixel point a1 of the sub-unit a in the display unit is also taken as an example of the luminance data of green in the target data. As can be obtained from the actual test, when pixel a1 is to beWhen the initial brightness data corresponding to green is 10, and the display unit is not corrected by thermal compensation, the pixel point a1 reaching the thermal equilibrium state has a brightness value of 9 actually displayed when green is displayed, namely the pixel point a1 has data O_c of 10 and o_h of 9 in the cold screen state, and the thermal compensation coefficient C_h corresponding to the pixel point a1 isTherefore, according to the data of the display unit in the cold screen state and the data when the display unit reaches the thermal equilibrium state without correcting the display unit, the thermal compensation coefficient corresponding to the display unit can be directly determined.
The application comprises two different methods for determining the thermal compensation coefficient, and can obtain the thermal compensation coefficient of the display unit by different methods according to different practical application scenes, so that the determination mode of the thermal compensation coefficient is further expanded, and a richer approach is provided for the application of the correction of the display unit in real life.
In order to facilitate obtaining the thermal compensation coefficient of the display unit and increase the correction speed, in a possible embodiment, before obtaining the thermal compensation coefficient of the display unit, the method further comprises: determining a thermal compensation coefficient of the display unit according to at least one of target data of the first display unit and data of the first display unit in a cold screen state and data when the first display unit reaches a thermal equilibrium state, and storing the thermal compensation coefficient into control equipment corresponding to the display unit; the obtaining of the thermal compensation coefficient of the display unit comprises the following steps: the thermal compensation coefficient of the display unit is obtained from a control device of the display unit.
The control device may be a transmitting card corresponding to the display unit; or a receiving card corresponding to the display unit; the application is not limited to the control device, and the control chip can also be a control chip corresponding to the display unit.
Similarly, when the display unit is corrected, the thermal compensation coefficient corresponding to each subunit is directly obtained from the receiving card corresponding to the display unit, so that the thermal compensation coefficient of the display unit can be quickly obtained when the display unit is corrected, and the correction rate of the display unit is accelerated.
After the cold screen correction coefficients corresponding to the subunits in the display unit and the thermal compensation coefficients corresponding to the display unit are obtained, the display unit can be adjusted according to the obtained cold screen correction coefficients and the thermal compensation coefficients, so that the influence of temperature on the actual display effect of the display unit is fully considered.
S103, obtaining a target correction coefficient of the display unit according to the thermal compensation coefficient of the display unit and the cold screen correction coefficient of each subunit, wherein the target correction coefficient is used for correcting the display unit.
It will be understood that the display unit is affected by factors such as temperature during the display process, and the correction of the display unit is to make the display unit still display with the target data under the influence of the factors.
In one embodiment, the target correction coefficient of the display unit is obtained according to the thermal compensation coefficient of the display unit and the cold screen correction coefficient of each subunit, where the target correction coefficient is used for correcting the display unit, and the method further includes: obtaining a target correction coefficient according to the product of the thermal compensation coefficient and the cold screen correction coefficient; and correcting the display unit according to the target correction coefficient.
Based on the above example of one pixel of the sub-unit in the display unit, the target correction coefficient corresponding to the pixel may be determined according to formula (5):
C＝C_h*C_c (5)
in the above formula (5), C represents a target correction coefficient, c_h represents a thermal compensation coefficient, c_c represents a cold screen correction coefficient, and the target correction coefficient C may be determined according to the product of the thermal compensation coefficient c_h and the cold screen correction coefficient c_c to correct the display unit.
It is noted that, in order to accurately correct the LED display unit, the display effect of the corrected LED display unit is improved, the initial data includes initial luminance data corresponding to three colors of the three primary colors, and the corresponding target data includes target luminance data corresponding to three colors of the three primary colors. Thus, represents a matrix multiplication.
Based on the above example, the cold screen correction coefficient of the pixel point a1 is obtained to be 0.5, and the thermal compensation coefficient of the pixel point a1 is obtained to beMultiplying the thermal compensation coefficient of the pixel point a1 by the cold screen correction coefficient to obtain a target correction coefficient of +.>. That is, it is determined that the target correction coefficient corresponding to the pixel point a1 is +.>When the pixel a1 is lit up to the thermal equilibrium, the pixel a1 is actually displayed with the target luminance value 5. In the practical application process, different target data can be set manually, and the pixel point a1 is according to the target correction coefficient +.>The display thereof is corrected so that the pixel point a1 can be displayed with the target data after the thermal balance is reached. />
In order to avoid the influence of the abnormal data on the thermal compensation coefficient, the utilization rate of the thermal compensation coefficient is improved, and the accuracy of the correction of the display unit is further improved, in a possible embodiment, after the thermal compensation coefficient of the display unit is obtained, the method further includes: and preprocessing the thermal compensation coefficient by adopting a noise reduction algorithm or a smoothing algorithm to obtain the preprocessed thermal compensation coefficient. Multiplying the cold screen correction coefficient by the preprocessed thermal compensation coefficient to obtain a target correction coefficient; and correcting the display unit by using the target correction coefficient.
Of course, other algorithms may be used to pre-process the thermal compensation coefficient in embodiments of the present application, which is not limited in any way.
It should be noted that, in the embodiment of the present application, the display unit is a box body, and the subunit is a lamp panel. If the display unit is a box body, the subunits are lamp panels, and the obtained cold screen correction coefficients of all the lamp panels and the obtained thermal compensation coefficients of the box body are utilized to correct the data of all the lamp panels in the box body, so that when the whole box body is in a thermal balance state, each lamp panel can be displayed by target data, the luminance uniformity of the whole box body is effectively ensured, and the display effect of the box body is improved.
Or the display unit is a bracket, and the subunit is a box body or a lamp panel. If the display unit is a bracket, the subunits are the box bodies or the lamp panels, and the acquired cold screen correction coefficients of the box bodies or the lamp panels and the thermal compensation coefficients of the bracket are utilized to correct the data of the box bodies or the lamp panels in the bracket, so that when the whole bracket is in a thermal balance state, each box body or lamp panel can be displayed by target data, the luminance uniformity of the whole bracket is effectively ensured, and the display effect of the bracket is improved.
Alternatively, the display unit is a thermal cycle unit. The thermal cycle unit is a physical heat dissipation structure formed by splicing a plurality of repeated units and capable of generating thermal regularity change.
Taking an LED display unit as an example, the thermal cycle unit is a physical heat dissipation structure capable of generating thermal regularity change in the LED display unit, and the physical heat dissipation structure is formed by splicing a plurality of repeating units.
Alternatively, in general, the thermal change (i.e., thermal effect) of the LED display unit is generated by heating components such as the lamp bead, the circuit, the driving chip, the memory device, and the power supply, so the thermal cycle unit corresponding to the LED display unit may also be a repeating unit including components such as the lamp bead, the circuit, the driving chip, the memory device, and the power supply. For example, the thermal cycle unit may be a box or a bracket formed by splicing a plurality of boxes. The present application does not limit the scope of the display unit in any way.
If the display unit is a thermal cycle unit, the obtained target correction coefficient of the thermal cycle unit can be used for correcting the data of each subunit in the thermal cycle unit, so that each subunit in the thermal cycle unit can be displayed by the target data when the whole thermal cycle unit is in a thermal balance state, the luminosity uniformity of the whole thermal cycle unit is ensured, and the display effect of the thermal cycle unit is improved.
If the rule of the pixel point along with the temperature change is trans based on the definition that the display unit reaches the thermal balance in the process, when the display unit reaches the thermal balance state, the data o_h of the display unit in the thermal balance state can be determined according to the target data T and the rule trans along with the temperature change by referring to the formula (6).
O_h＝trans.*T (6)
The following formula (7) can be obtained according to the formula (3) and the formula (6):
C_h＝T(trans·*T) -1 (7)
since a receiving card is usually disposed in one bracket, or a receiving card is disposed in one box, when the thermal compensation coefficient corresponding to the display unit is directly obtained from the receiving card of the bracket or the box, it can be known from the above formula (6) and formula (7) that if the target data T of the same display unit is kept unchanged and the regular trans of the pixel point at the same position in different display units (for example, the lamp panel, the box or the bracket) along with the temperature change is the same, the thermal compensation coefficient obtained from the same position in different display units is the same.
Therefore, under the condition that the target data T is kept unchanged, when a plurality of lamp panels are spliced into a box body, the thermodynamic change rule of pixel points at the same position on different lamp panels is the same, and when the thermodynamic compensation coefficient corresponding to each pixel on one of the lamp panels is obtained, the obtained thermodynamic compensation coefficient can be applied to other lamp panels spliced into the box body. Therefore, even if the splicing sequence of the lamp panels spliced into the box body is changed, the display effect of the box body can be corrected by using the thermal compensation correction method provided by the embodiment of the application.
Or when a plurality of boxes or lamp panels are spliced into a bracket, and the thermal change rules of the pixels at the same position on different boxes or lamp panels are the same, the obtained thermal compensation coefficients can be applied to other boxes or lamp panels spliced into the same bracket when the thermal compensation coefficients corresponding to the pixels on one box or lamp panel are obtained. Likewise, even if the splicing sequence of the boxes or the lamp panels spliced into the bracket is changed, the display effect of the bracket can be corrected by using the thermal compensation correction method provided by the embodiment of the application.
Therefore, after the subunits are spliced into the display unit, the cold screen correction coefficients and the thermal compensation coefficients respectively corresponding to the subunits when the whole display unit is in different states are collected, and the data of the subunits are corrected based on the cold screen correction coefficients and the thermal compensation coefficients respectively, so that when the whole display unit is in a thermal balance state, each subunit can be displayed with target data, and the correction of the whole display unit is realized.
On one hand, in the thermal compensation correction method provided by the application, the cold screen correction coefficient and the thermal compensation coefficient of each subunit are collected when the whole display unit is in a cold screen state and a thermal balance state after the subunits are spliced into the display unit, so that after the respective data are corrected by the respective cold screen correction coefficient and the thermal compensation coefficient of each subunit, each subunit can be displayed by target data when the whole display unit is in the thermal balance state, thereby ensuring the luminosity uniformity of the whole display unit and improving the display effect.
On the other hand, in the method for thermal compensation correction provided by the application, the respective data are corrected by utilizing the respective cold screen correction coefficients and the thermal compensation coefficients of the sub-units, so that each sub-unit can be displayed in target data when the whole display unit is in a thermal balance state no matter how the splicing sequence of the sub-units in the display unit is changed. Therefore, the display units do not need to be spliced according to the fixed templates, and the display units can be flexibly spliced.
As shown in fig. 2, an embodiment of the present application provides a thermal compensation correction device applied to a display unit, the display unit including a plurality of sub-units, each of the plurality of sub-units storing a cold-screen correction coefficient, the thermal compensation correction device 200 including:
A first obtaining unit 201, configured to obtain a cold screen correction coefficient of each subunit, where the cold screen correction coefficient is determined according to initial data and target data of the subunit in a cold screen state, and the initial data includes at least one of an initial luminance, an initial chromaticity, and an initial luminance chromaticity;
a second obtaining unit 202, configured to obtain a thermal compensation coefficient of the display unit, where the thermal compensation coefficient is obtained based on at least one of target data of the first display unit and data of the first display unit in a cold screen state, and data when the first display unit reaches a thermal equilibrium state, and the first display unit is a display unit, or the first display unit is a sample display unit corresponding to the display unit;
and the correction unit 203 is configured to obtain a target correction coefficient of the display unit according to the thermal compensation coefficient of the display unit and the cold screen correction coefficient of each subunit, where the target correction coefficient is used for correcting the display unit.
In one embodiment, the cold screen correction coefficient is determined according to initial data and target data of the subunit in a cold screen state, and includes: the cold screen correction coefficient is determined according to initial data and target data of three primary colors of the subunit in a cold screen state;
And/or, the thermal compensation coefficient is obtained based on at least one of target data of the first display unit and data of the first display unit in a cold screen state, and data when the first display unit reaches a thermal equilibrium state, including: the thermal compensation coefficient is based on at least one of target data of the first display unit and three primary color data of the first display unit in a cold screen state, and the three primary color data when the first display unit reaches a thermal equilibrium state.
In one embodiment, before the first obtaining unit 201 obtains the cold screen correction coefficient of each subunit, the apparatus further includes: determining a cold screen correction coefficient of each subunit according to initial data and target data of each subunit in a cold screen state, and storing the cold screen correction coefficient into each subunit;
the first acquisition unit 201 is further configured to: and respectively acquiring the cold screen correction coefficient of each subunit from each subunit.
In one embodiment, the second obtaining unit 202 obtains the thermal compensation coefficient of the display unit before the device further includes: determining a thermal compensation coefficient of the display unit according to at least one of target data of the first display unit and data of the first display unit in a cold screen state and data when the first display unit reaches a thermal equilibrium state, and storing the thermal compensation coefficient into control equipment corresponding to the display unit;
The second acquisition unit 202 is further configured to: the thermal compensation coefficient of the display unit is obtained from a control device of the display unit.
In one embodiment, the correction unit 203 is further configured to: obtaining a target correction coefficient according to the product of the thermal compensation coefficient and the cold screen correction coefficient; and correcting the display unit according to the target correction coefficient.
In one embodiment, the method for determining the thermal compensation coefficient is as follows: c_h=t_o_h -1 Wherein, C_h represents a thermal compensation coefficient, T represents target data of the first display unit, and O_h represents data when the first display unit reaches a thermal equilibrium state after cold screen correction;
alternatively, c_h=o_c_o_h -1 Wherein c_h represents a thermal compensation coefficient, o_c represents data of the first display unit in a cold screen state, and o_h represents data when the first display unit reaches a thermal equilibrium state without correcting the first display unit.
In one embodiment, the second obtaining unit 202 obtains the thermal compensation coefficient of the display unit, and then the apparatus further includes: and preprocessing the thermal compensation coefficient by adopting a noise reduction algorithm or a smoothing algorithm to obtain the preprocessed thermal compensation coefficient.
In one embodiment, the display unit is a box, and the subunit is a lamp panel; or the display unit is a bracket, and the subunit is a box body or a lamp panel; alternatively, the display unit is a thermal cycle unit.
Based on the same inventive concept, the embodiment of the application further provides a thermal compensation correction device, where the thermal compensation correction device 300 may be a device such as a notebook computer, a palm computer, a PC, a tablet computer, a mobile phone, a device such as a robot, a desktop computer, a server, or other devices capable of performing thermal compensation correction on a display unit. The thermal compensation correction device 300 is shown in fig. 3.
As shown in fig. 3, the thermal compensation correction apparatus 300 of this embodiment includes: a processor 301, a memory 302 and a computer program 303 stored in the memory 302 and executable on the processor 301. The computer program 303 may be executed by the processor 301 to generate instructions, and the processor 301 may implement the steps of the various embodiments of the rights authentication method described above according to the instructions. Alternatively, the processor 301, when executing the computer program 303, performs the functions of the modules/units in the above-described apparatus embodiments.
By way of example, the computer program 303 may be divided into one or more modules/units, which are stored in the memory 302 and executed by the processor 301 to accomplish the present application. One or more of the modules/units may be a series of computer program instruction segments capable of performing a specific function for describing the execution of the computer program 303 in the thermal compensation correction device 300.
It will be appreciated by those skilled in the art that fig. 3 is merely an example of a thermal compensation correction device 300 and is not meant to be limiting of the thermal compensation correction device 300, and may include more or fewer components than shown, or may combine certain components, or different components, e.g., the thermal compensation correction device 300 may also include input and output devices, network access devices, buses, etc.
The processor 301 may be a central processing unit (Central Processing Unit, CPU), but may also be other general purpose processors, digital signal processors (Digital Signal Processor, DSP), application specific integrated circuits (Application Specific Integrated Circuit, ASIC), field programmable gate arrays (Field-Programmable Gate Array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
The memory 302 may be an internal storage unit of the thermal compensation correction device 300, such as a hard disk or a memory of the thermal compensation correction device 300. The memory 302 may also be an external storage device of the thermal compensation correction device 300, such as a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash Card (Flash Card) or the like, which are provided on the thermal compensation correction device 300. Further, the memory 302 may also include both internal and external memory units of the thermal compensation correction device 300. The memory 302 is used to store a computer program as well as other programs and data required by the thermal compensation correction device 300. The memory 302 may also be used to temporarily store data that has been output or is to be output.
The thermal compensation correction device provided in this embodiment may perform the above method embodiment, and its implementation principle is similar to that of the technical effect, and will not be described herein again.
The embodiment of the application also provides a computer readable storage medium, on which a computer program is stored, which when being executed by a processor, implements the method of the above-mentioned method embodiment.
The present application also provides a computer program product which, when run on a thermal compensation correction device, causes the thermal compensation correction device to perform the method of the above method embodiments.
The integrated units described above, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer readable storage medium. Based on such understanding, the present application may implement all or part of the flow of the method of the above embodiments, and may be implemented by a computer program to instruct related hardware, where the computer program may be stored in a computer readable storage medium, and when the computer program is executed by a processor, the computer program may implement the steps of each of the method embodiments described above. Wherein the computer program comprises computer program code which may be in source code form, object code form, executable file or some intermediate form etc. The computer readable storage medium may include at least: any entity or device capable of carrying computer program code to the photographing apparatus/thermal compensation correction device, recording medium, computer Memory, read-Only Memory (ROM), random access Memory (Random Access Memory, RAM), electrical carrier signals, telecommunications signals, and software distribution media. Such as a U-disk, removable hard disk, magnetic or optical disk, etc.
Reference in the specification to "one embodiment" or "some embodiments" or the like means that a particular feature, structure, or characteristic described in connection with the embodiment is included in one or more embodiments of the application. Thus, appearances of the phrases "in one embodiment," "in some embodiments," "in other embodiments," and the like in the specification are not necessarily all referring to the same embodiment, but mean "one or more but not all embodiments" unless expressly specified otherwise. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless expressly specified otherwise.
In the description of the present application, it should be understood that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature.
Furthermore, in the present application, unless explicitly specified and limited otherwise, the terms "connected," "coupled," and the like are to be construed broadly and may be, for example, mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, unless otherwise specifically defined, the meaning of the terms in this disclosure is to be understood by those of ordinary skill in the art.
The above embodiments are only for illustrating the technical solution of the present application, and not for limiting the same; although the application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the application.

Claims (9)

1. The thermal compensation correction method is characterized by being applied to a display unit, wherein the display unit comprises a plurality of subunits, each subunit of the plurality of subunits stores a cold screen correction coefficient, the display unit is a box body, and the subunits are lamp panels; or the display unit is a bracket, and the subunit is a box body or a lamp panel; alternatively, the display unit is a thermal cycle unit; the method comprises the following steps:
acquiring a cold screen correction coefficient of each subunit, wherein the cold screen correction coefficient is determined according to initial data and target data of the subunits in a cold screen state, and the initial data comprises at least one of initial brightness, initial chromaticity and initial brightness;
Acquiring a thermal compensation coefficient of the display unit, wherein the thermal compensation coefficient is obtained based on at least one of target data of a first display unit and data of the first display unit in a cold screen state and data when the first display unit reaches a thermal equilibrium state, and the first display unit is the display unit or a sample display unit corresponding to the display unit;
the method for determining the thermodynamic compensation coefficient comprises the following steps: c_h=t_o_h -1 Wherein C_h represents the thermal compensation coefficient, T represents the target data of the first display unit, and O_h represents theThe first display unit is corrected by the cold screen, and then the data in the state of heat balance is obtained;
alternatively, c_h=o_c_o_h -1 Wherein c_h represents the thermal compensation coefficient, o_c represents the data of the first display unit in a cold screen state, and o_h represents the data when the first display unit reaches a thermal equilibrium state without correcting the first display unit;
and obtaining a target correction coefficient of the display unit according to the thermal compensation coefficient of the display unit and the cold screen correction coefficient of each subunit, wherein the target correction coefficient is used for correcting the display unit.
2. The method of claim 1, wherein the cold screen correction factor is determined based on initial data and target data of the subunit in a cold screen state, comprising: the cold screen correction coefficient is determined according to initial data and target data of three primary colors of the subunit in a cold screen state;
and/or, the thermal compensation coefficient is obtained based on at least one of target data of a first display unit and data of the first display unit in a cold screen state, and data when the first display unit reaches a thermal equilibrium state, and the thermal compensation coefficient comprises: the thermal compensation coefficient is obtained based on at least one of target data of a first display unit and three primary color data of the first display unit in a cold screen state, and the three primary color data when the first display unit reaches a thermal equilibrium state.
3. The method of claim 1, wherein prior to the obtaining the cold screen correction coefficients for each subunit, the method further comprises:
determining a cold screen correction coefficient of each subunit according to the initial data and the target data of each subunit in the cold screen state, and storing the cold screen correction coefficient into each subunit;
The obtaining the cold screen correction coefficient of each subunit includes:
and respectively acquiring the cold screen correction coefficient of each subunit from each subunit.
4. A method according to claim 1 or 3, wherein prior to said obtaining the thermal compensation coefficient of the display unit, the method further comprises:
determining a thermal compensation coefficient of the display unit according to at least one of target data of the first display unit and data of the first display unit in a cold screen state and data when the first display unit reaches a thermal equilibrium state, and storing the thermal compensation coefficient into control equipment corresponding to the display unit;
the obtaining the thermal compensation coefficient of the display unit includes:
the thermal compensation coefficient of the display unit is obtained from the control device of the display unit.
5. The method of claim 1, wherein the obtaining the target correction factor of the display unit according to the thermal compensation factor of the display unit and the cold-screen correction factor of each subunit, the target correction factor being used for correcting the display unit, comprises:
Obtaining a target correction coefficient according to the product of the thermal compensation coefficient and the cold screen correction coefficient;
and correcting the display unit according to the target correction coefficient.
6. The method of claim 4, wherein after the obtaining the thermal compensation coefficient of the display unit, the method further comprises:
and preprocessing the thermal compensation coefficient by adopting a noise reduction algorithm or a smoothing algorithm to obtain the preprocessed thermal compensation coefficient.
7. The thermal compensation correction device is characterized by being applied to a display unit, wherein the display unit comprises a plurality of subunits, each subunit in the plurality of subunits stores a cold screen correction coefficient, the display unit is a box body, and the subunits are lamp panels; or the display unit is a bracket, and the subunit is a box body or a lamp panel; alternatively, the display unit is a thermal cycle unit and the apparatus comprises:
a first obtaining unit, configured to obtain a cold screen correction coefficient of each subunit, where the cold screen correction coefficient is determined according to initial data and target data of the subunit in a cold screen state, and the initial data includes at least one of initial brightness, initial chromaticity, and initial luminance chromaticity;
The second acquisition unit is used for acquiring a thermal compensation coefficient of the display unit, wherein the thermal compensation coefficient is obtained based on at least one of target data of a first display unit and data of the first display unit in a cold screen state and data when the first display unit reaches a thermal equilibrium state, and the first display unit is the display unit or a sample display unit corresponding to the first display unit;
the method for determining the thermodynamic compensation coefficient comprises the following steps: c_h=t_o_h -1 Wherein, C_h represents the thermal compensation coefficient, T represents the target data of the first display unit, and O_h represents the data when the first display unit reaches a thermal equilibrium state after cold screen correction;
alternatively, c_h=o_c_o_h -1 Wherein c_h represents the thermal compensation coefficient, o_c represents the data of the first display unit in a cold screen state, and o_h represents the data when the first display unit reaches a thermal equilibrium state without correcting the first display unit;
and the correction unit is used for obtaining a target correction coefficient of the display unit according to the thermal compensation coefficient of the display unit and the cold screen correction coefficient of each subunit, and the target correction coefficient is used for correcting the display unit.
8. A thermal compensation correction device, the device comprising: a processor and a memory for storing a computer program, the processor being adapted to call and run the computer program from the memory, to cause the apparatus to perform the method of any one of claims 1 to 6.
9. A computer readable storage medium, characterized in that the computer readable storage medium has stored therein a computer program which, when executed by a processor, causes the processor to perform the method of any of claims 1 to 6.
CN202111460596.XA 2021-12-01 2021-12-01 Thermal compensation correction method, device and equipment Active CN114203086B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202111460596.XA CN114203086B (en) 2021-12-01 2021-12-01 Thermal compensation correction method, device and equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202111460596.XA CN114203086B (en) 2021-12-01 2021-12-01 Thermal compensation correction method, device and equipment

Publications (2)

Publication Number Publication Date
CN114203086A CN114203086A (en) 2022-03-18
CN114203086B true CN114203086B (en) 2023-10-20

Family

ID=80650209

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202111460596.XA Active CN114203086B (en) 2021-12-01 2021-12-01 Thermal compensation correction method, device and equipment

Country Status (1)

Country Link
CN (1) CN114203086B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115019721A (en) * 2022-05-31 2022-09-06 京东方科技集团股份有限公司 Tiled display device, control method thereof, control device and storage medium
WO2024065668A1 (en) * 2022-09-30 2024-04-04 京东方科技集团股份有限公司 Tiled display screen and display method therefor, parameter determination method, and control system

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102645403A (en) * 2012-04-16 2012-08-22 中国科学院等离子体物理研究所 Device for measuring friction coefficients under low-temperature, vacuum and strong electromagnetic environment
CN108831380A (en) * 2018-06-11 2018-11-16 深圳市华星光电半导体显示技术有限公司 Oled panel temperature compensation system and oled panel temperature-compensation method
CN111179817A (en) * 2020-02-21 2020-05-19 卡莱特（深圳）云科技有限公司 Method and device for eliminating brightness difference of display screen
CN111951696A (en) * 2020-07-30 2020-11-17 深圳市艾比森光电股份有限公司 Correction method and related device for LED display screen
CN112634819A (en) * 2020-12-23 2021-04-09 深圳市艾比森光电股份有限公司 Correction method and related device for LED display screen
CN113257144A (en) * 2021-05-13 2021-08-13 长春希达电子技术有限公司 Method for improving splicing brightness consistency among box bodies of LED display screen after single-box correction

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6737639B2 (en) * 2002-03-27 2004-05-18 Raytheon Company Display uniformity calibration system and method for a staring forward looking infrared sensor
US11062675B2 (en) * 2019-01-29 2021-07-13 Ignis Innovation Inc. Compensation for display degradation with temperature normalization

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102645403A (en) * 2012-04-16 2012-08-22 中国科学院等离子体物理研究所 Device for measuring friction coefficients under low-temperature, vacuum and strong electromagnetic environment
CN108831380A (en) * 2018-06-11 2018-11-16 深圳市华星光电半导体显示技术有限公司 Oled panel temperature compensation system and oled panel temperature-compensation method
CN111179817A (en) * 2020-02-21 2020-05-19 卡莱特（深圳）云科技有限公司 Method and device for eliminating brightness difference of display screen
CN111951696A (en) * 2020-07-30 2020-11-17 深圳市艾比森光电股份有限公司 Correction method and related device for LED display screen
CN112634819A (en) * 2020-12-23 2021-04-09 深圳市艾比森光电股份有限公司 Correction method and related device for LED display screen
CN113257144A (en) * 2021-05-13 2021-08-13 长春希达电子技术有限公司 Method for improving splicing brightness consistency among box bodies of LED display screen after single-box correction

Also Published As

Publication number Publication date
CN114203086A (en) 2022-03-18

Similar Documents

Publication Publication Date Title
CN114203086B (en) Thermal compensation correction method, device and equipment
CN106415697B (en) Display device, electronic apparatus including the same, and method of operating the electronic apparatus
US10657905B2 (en) Method and apparatus for compensating for brightness of display device
TWI342002B (en) Apparatus and method for display backlight control
US9949342B2 (en) Backlight, control method thereof and display device
US20180342224A1 (en) Electronic device, and display panel device correction method and system thereof
CN112116894B (en) Brightness compensation method and device of display panel, display panel and storage medium
CN112927654B (en) Backlight control method and device and terminal equipment
CN109147707A (en) Gamma value adjusting method, device and the display equipment of display panel
CN109410839B (en) Correction optimization method and device for display screen, electronic equipment and storage medium
TWI529693B (en) Display apparatus and method for transforming color thereof
CN111862880B (en) Method for acquiring multi-color gamma correction table and display control method, device and system
WO2023005867A1 (en) Backlight compensation method, device and system, and storage medium
CN109658862B (en) LED box brightness and chrominance correction method and system
CN112634819A (en) Correction method and related device for LED display screen
CN111951696B (en) Correction method and related device for LED display screen
CN113495709A (en) Color correction method, AP chip, terminal and storage medium
CN111199715B (en) Display device and driving method thereof
CN107465961B (en) Peak brightness improving method, storage medium and smart television
CN112071257B (en) LED screen correction method and device, storage medium and LED screen
CN115398521A (en) System, method and device for image processing
WO2019239914A1 (en) Control device, display device, and control method
CN107742503A (en) Demura method and system based on slr camera
TW202204865A (en) Display panel checking method, checking device, and storage medium
CN117854429A (en) Thermal compensation correction method and device and display control equipment

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