CN108257579B - Screen calibration method and device and terminal - Google Patents
Screen calibration method and device and terminal Download PDFInfo
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- CN108257579B CN108257579B CN201810043403.2A CN201810043403A CN108257579B CN 108257579 B CN108257579 B CN 108257579B CN 201810043403 A CN201810043403 A CN 201810043403A CN 108257579 B CN108257579 B CN 108257579B
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- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
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- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
- G09G5/02—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the way in which colour is displayed
- G09G5/024—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the way in which colour is displayed using colour registers, e.g. to control background, foreground, surface filling
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
- G09G5/02—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the way in which colour is displayed
- G09G5/022—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the way in which colour is displayed using memory planes
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
- G09G5/10—Intensity circuits
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/04—Maintaining the quality of display appearance
- G09G2320/043—Preventing or counteracting the effects of ageing
- G09G2320/048—Preventing or counteracting the effects of ageing using evaluation of the usage time
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/06—Adjustment of display parameters
- G09G2320/0666—Adjustment of display parameters for control of colour parameters, e.g. colour temperature
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Abstract
The embodiment of the invention discloses a method, a device and a terminal for screen calibration, wherein the method comprises the following steps: counting the working brightness and working duration of a screen; and according to the working brightness and the working duration of the screen, determining that the color difference drift of the screen is greater than or equal to a color difference threshold, and calibrating the color coordinate of the screen. In the embodiment of the invention, when the color difference drift of the screen is more than or equal to the color difference threshold, the color coordinate of the screen can be automatically calibrated without external equipment such as a color analyzer and the like, the implementation is simple and convenient, and the user experience is improved.
Description
Technical Field
The present application relates to a screen calibration technology, and more particularly, to a method, an apparatus and a terminal for screen calibration.
Background
Before the terminal leaves the factory, the screen of the terminal generally needs to be calibrated, for example, the color coordinates of the terminal screen can be detected by a colorimetric instrument, and the color coordinates of the terminal screen can be adjusted according to the target color coordinates.
However, this screen calibration is performed before the terminal is shipped from a factory, and as the terminal is used, the terminal screen may have a color difference drift phenomenon, which changes the color of the terminal screen and affects the visual effect. Such an effect is particularly serious for a terminal with more than two screens, for example, a dual-screen mobile phone, because the color difference of the main screen and the secondary screen has different drift degrees, the color of the two screens is different, and the user experience is poor.
Disclosure of Invention
The embodiment of the invention provides a method, a device and a terminal for screen calibration.
The embodiment of the invention provides a method for calibrating a screen, which comprises the following steps:
counting the working brightness and working duration of a screen;
and according to the working brightness and the working duration of the screen, determining that the color difference drift of the screen is greater than or equal to a color difference threshold, and calibrating the color coordinate of the screen.
The embodiment of the invention also provides a device for calibrating the screen, which comprises:
the statistical module is used for counting the working brightness and the working duration of the screen;
and the calibration module is used for determining that the color difference drift of the screen is greater than or equal to a color difference threshold value according to the working brightness and the working duration of the screen and calibrating the color coordinates of the screen.
An embodiment of the present invention further provides a terminal, including:
a processor;
a memory for storing the processor-executable instructions;
one or more screens;
wherein the processor is configured to perform the following operations:
counting the working brightness and the working duration of the screen;
and according to the working brightness and the working duration of the screen, determining that the color difference drift of the screen is greater than or equal to a color difference threshold, and calibrating the color coordinate of the screen.
The embodiment of the invention also provides a computer-readable storage medium, which stores computer-executable instructions, wherein the computer-executable instructions are used for executing the screen calibration method.
The embodiment of the invention comprises the following steps: counting the working brightness and working duration of a screen; and according to the working brightness and the working duration of the screen, determining that the color difference drift of the screen is greater than or equal to a color difference threshold, and calibrating the color coordinate of the screen. In the embodiment of the invention, when the color difference drift of the screen is more than or equal to the color difference threshold, the color coordinate of the screen can be automatically calibrated without external equipment such as a color analyzer and the like, the implementation is simple and convenient, and the user experience is improved.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the example serve to explain the principles of the invention and not to limit the invention.
FIG. 1 is a schematic illustration of color coordinates;
FIG. 2 is a diagram illustrating color difference drift of a screen;
FIG. 3 is a flow chart of a method of screen calibration according to an embodiment of the present invention;
FIG. 4 is a diagram illustrating a relationship between a working brightness and a working duration according to an embodiment of the present invention;
FIG. 5 is a schematic view of color coordinate characteristic data of a screen;
FIG. 6 is a schematic diagram of color coordinate changes of a first screen;
FIG. 7 is a schematic diagram of color coordinate changes of a second screen;
FIG. 8 is a flowchart of a method of screen calibration according to an exemplary embodiment of the present invention;
FIG. 9 is a diagram illustrating an apparatus for screen calibration according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.
The steps illustrated in the flow charts of the figures may be performed in a computer system such as a set of computer-executable instructions. Also, while a logical order is shown in the flow diagrams, in some cases, the steps shown or described may be performed in an order different than here.
As shown in fig. 1, which is a schematic diagram of color coordinates, the color coordinates (chromaticity coordinates) are coordinates of colors, also called a color system, and different colors correspond to one point in the diagram, for example, the point D65 in fig. 1 corresponds to white. For a white point, the center value of its color coordinates may be set to (0.30.0.32).
The color coordinates of the terminal screen refer to a designated position and color coordinates of a designated color in the screen, and in the embodiment of the present invention, if not specifically described, the color coordinates of the terminal screen are color coordinates of a point white in the screen, but the embodiment of the present invention is not limited thereto, and the designated position may be another position, and the designated color may be another color, for example, red, blue, green, and the like.
The color difference drift of the screen is the variation of the color coordinates of the screen, and is Δ x + Δ y. For the terminal, the color difference drift of the screen gradually increases as the time of use increases. As shown in fig. 2, the abscissa is the maximum luminance use time of the white screen, and the ordinate is the color difference drift Δ x + Δ y in hours.
The influence of the color difference drift of the screen on the dual-screen or multi-screen terminal is particularly serious, for example, in the case of the dual-screen terminal, since the use frequencies of the primary screen and the secondary screen are different, and the attenuation drift of the primary screen and the secondary screen are different, even when a production line leaves a factory, the color difference of the two screens is calibrated to be within the color difference threshold, and along with the use time, as shown in fig. 2, for example, after the use time exceeds 100 hours, the color difference drift of the screens may exceed the color difference threshold, and the user experience is seriously influenced.
As shown in fig. 3, an embodiment of the present invention provides a method for screen calibration, including:
In one embodiment, the counting the working brightness and the working duration of the screen includes: and counting the working brightness and the corresponding working time of each time period of the screen.
For example, the statistical operating time is t1, t 2.., tn, l1, l 2.., ln is the operating brightness corresponding to the operating time of t1, t 2.., tn, n is the number of time segments and is an integer greater than or equal to 1, and t1, t 2.., tn is the operating time corresponding to each time segment. The working brightness and the corresponding working time of each time period can be recorded in a persistence partition of the terminal in a file mode, data can be updated after the terminal is turned on and turned off and restarted, and the data cannot be erased when factory settings are restored.
The color difference drift of the screen working under the maximum brightness is the most serious, and the color difference drift is reduced along with the reduction of the working brightness in the same working time.
Prior to step 101, the method may further comprise: and acquiring the relation between the working brightness and the working duration of the screen and the color difference drift.
The relationship between the working brightness and working duration of the screen and the color difference drift may be: when the color difference drift of the screen is equal to the color difference threshold, fitting the working brightness and the working time according to the multiple groups of working brightness and the corresponding working timeFor example, the time length relationship curve is set to operate at the maximum brightness (i.e. the brightness is 255) of the screen, and the test is performed, and the operating time t corresponding to the exceeding of the color difference threshold (e.g. the color difference threshold is 3 ‰) is measuredmax120 hours; setting the screen to work at a mid brightness (i.e. brightness of 128), exceeding the color difference threshold corresponds to the working time tmid190 hours; by fitting the relation curve between the working brightness and the working duration, the relation between the working brightness and the working duration of the screen and the color difference drift is obtained, as shown in fig. 4.
Because the two groups of working brightness and corresponding working duration (maximum brightness and intermediate brightness) are fitted in the above example, the relation curve between the working brightness and the working duration can be a straight line, and when more groups of working brightness and corresponding working duration are selected for testing, the relation curve between the working brightness and the working duration obtained by fitting is more accurate.
And 102, determining that the color difference drift of the screen is greater than or equal to a color difference threshold value according to the working brightness and the working duration of the screen, and calibrating the color coordinate of the screen.
In an embodiment, the determining that the color difference drift of the screen is greater than or equal to a color difference threshold according to the working brightness and the working duration of the screen includes:
obtaining total working time and weighted average working brightness corresponding to the total working time according to the working brightness of each time period of the screen and the corresponding working time, comparing the weighted average working brightness and the total working time with a preset relation, and determining that the color difference drift corresponding to the weighted average working brightness and the total working time is greater than or equal to a color difference threshold; the preset relationship is the relationship between the working brightness and the working duration of the screen and the color difference drift.
Wherein, the total working time t is:
t1+ t2+ ·+ tn, wherein t1, t2,. and tn are working time corresponding to each time period, and n is an integer greater than or equal to 1.
The weighted average working brightness L corresponding to the total working time length is as follows:
wherein l1, l2, ln are working brightness corresponding to t1, t2, tn working time respectively.
When the total working duration t is greater than or equal to the working duration corresponding to the weighted average working brightness L in the relation curve, determining that the color difference drift corresponding to the total working duration t and the weighted average working brightness L is greater than or equal to a color difference threshold;
and the relation curve is a relation curve of the working brightness and the working duration of the screen when the color difference drift is equal to the color difference threshold.
When the relationship curve between the working brightness and the working duration of the screen when the color difference drift is equal to the color difference threshold is obtained by fitting the two groups of working brightness and the corresponding working duration, the relationship curve can be represented by the following formula:
wherein, tLThe total working time length of the screen when the color difference drift is equal to the color difference threshold value under the weighted average working brightness L is L1And t1Respectively a first working brightness and a corresponding first working duration L of the screen when the color difference drift is equal to the color difference threshold2And t2Respectively, a second working brightness and a corresponding second working duration of the screen when the color difference drift is equal to the color difference threshold.
Accordingly, the total working time t is more than or equal to tLI.e. by
And then determining that the color difference drift corresponding to the total working time t and the weighted average working brightness L is greater than or equal to a color difference threshold.
Referring to fig. 4, if the first operating brightness is the maximum brightness 255 and the second operating brightness is the middle brightness 128, the relationship can be expressed as follows:
that is to say
In this example, t1＝tmax,t2＝tmid。
That is, the working brightness is L and the working time is tLAnd then triggering one-time dynamic calibration when the color difference drift is larger than or equal to the color difference threshold.
In the embodiment of the present invention, the screen may be one or more, wherein,
wherein, the screen is a plurality of screens which can be: a plurality of separate screens or a single screen is divided into a plurality of sections.
That is, the embodiment of the present invention is applicable not only to a plurality of different physical display screens, but also to different display areas of the same display screen.
For the same screen, especially for the common OLED (Organic Light-Emitting Diode) screen at present, the requirements of various functions can be divided into displaying in different display areas, and the color difference drift of different areas of the screen gradually increases with the increase of the use time.
Such as edge Display, fixed time, motion parameters, etc., usually Always on Display (Always on Display), and other parts as areas used by normal users. Compared with a normally used area, the normally used area has longer working time, the color coordinate drift loss of the normally used area of the screen is serious along with the continuous increase of time, and the screen can be calibrated by the embodiment of the invention, so that the color difference of different display areas of the same screen is reduced, and the user experience of different display areas of the same screen is improved.
When the number of the screens is one or more, the color difference drift of the screen is determined to be greater than or equal to a color difference threshold value, and the calibration of the color coordinates of the screen comprises the following steps:
determining that the color difference drift of any one screen is greater than or equal to a color difference threshold, and calibrating the color coordinate of each screen; or
And determining that the color difference drift of any one screen is greater than or equal to a color difference threshold, and calibrating the color coordinates of the screen with the color difference drift greater than or equal to the color difference threshold.
When the number of the screens is multiple, a calibration object can be set, and under the condition of triggering calibration, all the screens are calibrated or only the screens with the color difference drift larger than or equal to the color difference threshold value are calibrated.
In an embodiment, before step 101, before the terminal leaves the factory, the terminal is calibrated, including the following steps:
entering a calibration mode, and controlling a chromaticity instrument to detect the color coordinates of the screen; receiving the color coordinate of the screen, and comparing the color coordinate of the screen with a target color coordinate; judging whether calibration is needed or not; and when calibration is needed, adjusting the color coordinates of the screen according to the target color coordinates.
And after the calibration is finished, calibrating the original color coordinate data of the screen and recording the data into the equipment memory.
The color coordinate characteristic data of the screen is obtained by measuring through a colorimetric instrument when the screen is delivered from a factory, and is stored in a memory of the terminal when the screen is delivered from the factory. As shown in fig. 5, the color coordinate register-related setting values are on the left and the corresponding color coordinates (x, y) are on the right.
The r1, r2, r255 may be one color coordinate register or a group of color coordinate registers according to different screens. The Color coordinate register is also called a CTA (Color Temperature Adjust) register. In this example, the color coordinate register has 255 levels, and in other embodiments, the color coordinate register may have 64 levels, 32 levels, or other number of levels. Each screen corresponds to the grade of a color coordinate register, and the numerical value of the corresponding color coordinate and the setting value of the register can be obtained according to the grade. The default set at the time of screen shipment is typically an intermediate level. For example, the color coordinate register of the LCD has 255 levels, and the factory default level is 128, i.e., r 128. Of the 255 levels of the color coordinate register, level r1 corresponds to the coldest tone, and level r255 corresponds to the warmest tone. In the embodiment of the invention, the color coordinate of the screen and the setting value of the register are correspondingly adjusted by adjusting the color coordinate register level corresponding to the color coordinate of the screen. For example, after the screen is calibrated by the method of the embodiment of the present invention, the level is changed from r100 to r120, and it is known that the value of the color coordinate and the setting value of the register are changed.
As shown in fig. 6 and fig. 7, taking the terminal as an example, assuming that the color difference between the two screens is already smaller than the color difference threshold after static calibration by the colorimetric instrument at the time of factory shipment, the color coordinate register level setting value for the first screen is r100, and the corresponding color coordinate is (xp100, yp 100); the color coordinate register level setting value for the second screen is r160, and the corresponding color coordinates are (xp160, yp 160).
After the first screen operation total time period t1, average brightness L1, the register sets the corresponding shifted color coordinates as shown in fig. 6. Where Δ xl1 is the color coordinate shift of the x-axis of the first screen, and Δ yl1 is the color coordinate shift of the y-axis of the first screen.
After the second display screen has been operated for a total duration t2 and an average brightness L2, the register sets the corresponding shifted color coordinates as shown in fig. 7. Where Δ xl2 is the color coordinate shift of the x-axis of the second screen, and Δ yl2 is the color coordinate shift of the y-axis of the second screen.
In the embodiment of the present invention, the calibration of the color coordinates of the screen may be divided into three ways:
the first mode is as follows: the calibration mode is suitable for the condition that the terminal has one screen and also suitable for the condition that the terminal has a plurality of screens, namely the number of the screens is more than or equal to 1.
This way of calibration may include: according to the drift amount of the color coordinate of the screen, adjusting the color coordinate of the screen to at least one of the following:
the color difference from the target color coordinate is minimum;
the color difference with the target color coordinate is less than a color difference threshold.
The amount of drift of the color coordinates of the screen is a known amount as described above. Taking two screens as an example, Δ xl1 is the color coordinate shift of the x-axis of the first screen, and Δ yl1 is the color coordinate shift of the y-axis of the first screen; Δ xl2 is the color coordinate shift of the x-axis of the second screen, and Δ yl2 is the color coordinate shift of the y-axis of the second screen.
Assuming that the color coordinate value of the target color coordinate is (x0, y0), the ending condition of the dynamic calibration is converted into a condition that the distances between two points (x1, y1) and (x2, y2) on the judgment plane and the target color coordinate are minimum, that is, the color difference is minimum, or a condition that the color difference is smaller than the color difference threshold is satisfied. The following formula is adopted:
the formula I is as follows:
the formula II is as follows:
the color coordinates after the shift
The calculation is performed by substituting the formula one above to obtain new color coordinate values after dynamic calibration, and assuming that (xp120- Δ xl1, yp120- Δ yl1) satisfies the above conditions, the first screen r120 is recorded and set to the register of the first screen.
The color coordinates after the shift
The new color coordinate values after dynamic calibration are obtained by substituting the formula II, and the second screen r150 is recorded and set into the register of the second screen on the assumption that (xs150- Δ xl1, ys150- Δ yl1) satisfies the above conditions.
In this embodiment, the screen is calibrated to the same fixed target color coordinates, which may be set to the color coordinates (0.30,0.32) of the white point.
In practical applications, priority may be set, for example, a color coordinate having the smallest color difference with the target color coordinate and having a color difference with the target color coordinate smaller than a color difference threshold is preferentially selected, if not, a color coordinate having a color difference with the target color coordinate smaller than a color difference threshold is selected, and if still not, a corresponding color coordinate having the smallest color difference with the target color coordinate is selected.
The second mode is as follows: the calibration mode is suitable for the condition that the terminal has a plurality of (at least two) screens, namely the number of the screens is more than or equal to 2.
This way of calibration may include: according to the drift amount of the color coordinate of each screen, adjusting the color coordinate of the screen to at least one of the following:
the color difference of the color coordinates between the at least two screens is minimal;
the color difference between the at least two screens is less than a color difference threshold.
Taking two screens as an example, the amount of drift of the color coordinates of the screens is a known amount as described above. Δ xl1 is the color coordinate shift of the x-axis of the first screen, and Δ yl1 is the color coordinate shift of the y-axis of the first screen; Δ xl2 is the color coordinate shift of the x-axis of the second screen, and Δ yl2 is the color coordinate shift of the y-axis of the second screen.
The ending condition of the dynamic calibration is converted into a condition that the distance between two points (x1, y1), (x2, y2) of the plane is minimum, namely the color difference is minimum, or the condition that the color difference is smaller than a color difference threshold value is met. The following formula is adopted:
the color coordinates after the shift
Calculated by substituting the above formula, new color coordinate values after dynamic calibration are obtained, and assuming that (xp120- Δ xl1, yp120- Δ yl1) and (xs150- Δ xl1, ys150- Δ yl1) satisfy the above conditions, the first screen r120 and the second screen r150 are recorded and set in registers of the first screen and the second screen, respectively.
Taking three screens as an example, Δ xl1 is the color coordinate shift of the x-axis of the first screen, and Δ yl1 is the color coordinate shift of the y-axis of the first screen; Δ xl2 is the color coordinate shift of the x-axis of the second screen, and Δ yl2 is the color coordinate shift of the y-axis of the second screen; Δ xl3 is the color coordinate shift of the x-axis of the second screen, and Δ yl3 is the color coordinate shift of the y-axis of the second screen.
The ending condition of the dynamic calibration is converted into a condition that the distance between three points (x1, y1), (x2, y2), (x3, y3) of the plane is minimum, namely the color difference is minimum, or the condition that the color difference is smaller than a color difference threshold value is met. Firstly, the following formula is adopted to obtain the nearest point between two screens
The color coordinates after the shift
The calculation is carried out by substituting the formula to obtain new color coordinate values after the dynamic calibration, and assuming that (xp 120-delta xl1, yp 120-delta yl1) and (xs 160-delta xl1, ys 160-delta yl1) satisfy the above conditions, the first screen r120 and the second screen r160 are recorded, and a plurality of points between the two screens may satisfy the condition that the color difference is smaller than the color difference threshold value, and assuming (the first screen r120, the second screen r160) and (the first screen r122, the second screen r 162). Then, the second display screen and the third display screen are taken as objects to carry out searching calculation, and the nearest point between the two screens is also adopted
The color coordinates after the shift
And
substituting the formula for calculation to obtain new color coordinate value after dynamic calibration.
The second display screen (x2, y2) is a point that satisfies the condition that the color difference between the first display screen and the second display screen is smaller than the color difference threshold, for example, at this time, the value of the second display screen is r160 or r162, and the calculation is carried out by substituting (xs160- Δ xl1, ys160- Δ yl1) or (xs162- Δ xl1, ys162- Δ yl 1). Assuming that (xs160- Δ xl1, ys160- Δ yl1) and (xt100- Δ xl3, yt100- Δ yl3) satisfy the above conditions, the second screen r160 and the third screen r100 are recorded.
And r100 set to the first screen r120 and the second screen r160 and the third display screen, respectively, is set to the corresponding register.
In practical applications, priority may be set, for example, the color coordinate with the smallest color difference between the plurality of screens and the color coordinate with the smallest color difference between the plurality of screens is preferentially selected, if not, the color coordinate with the smallest color difference between the plurality of screens is preferentially selected, and if not, the color coordinate with the smallest color difference between the plurality of screens is preferentially selected.
A third mode: the calibration mode is suitable for the condition that the terminal has a plurality of (at least two) screens, namely the number of the screens is more than or equal to 2.
This way of calibration may include: according to the drift amount of the color coordinate of each screen, adjusting the color coordinate of the screen to at least one of the following:
the color difference between the color coordinates of the at least two screens and the target color coordinates is minimum;
the color difference between the color coordinates of the at least two screens and the target color coordinate is less than a color difference threshold;
the color difference of the color coordinates between the at least two screens is minimal;
the color difference between the at least two screens is less than a color difference threshold.
This embodiment is a combination of the first and second embodiments, and can be implemented with reference to the first and second embodiments, and in practical applications, the priority may be set, for example, by preferentially selecting a color coordinate having a minimum color difference from the target color coordinate and having a color difference with the target color coordinate smaller than a color difference threshold, if not, selecting a color coordinate having a color difference with the target color coordinate smaller than the color difference threshold, if not, selecting a color coordinate having a minimum color difference from the color coordinates between the plurality of screens and having a color difference with the plurality of screens smaller than the color difference threshold, if not, selecting a color coordinate having a color difference with the plurality of screens smaller than the color difference threshold, and if not, selecting a color coordinate having a color difference with the color coordinates between the plurality of screens smaller than the color difference threshold.
In an embodiment, the method further comprises: and updating the information of the adjusted color coordinate register grade and storing the information into a color difference calibration file.
The information of the adjusted color coordinate register level, such as the register setting value, may be updated to a new calibration file. The new color difference calibration file can be stored in the persistence partition, and data cannot be erased when factory settings are restored. And loading the latest color difference calibration file every time the computer is started, and loading and setting the latest color difference calibration file into a register.
In the embodiment of the invention, when the color difference drift of the screen is more than or equal to the color difference threshold, the color coordinate of the screen can be automatically calibrated without external equipment such as a color analyzer and the like, the implementation is simple and convenient, and the user experience is improved.
The following is a description of an application example.
Taking a dual-screen terminal as an example, since the use frequencies of the primary and secondary screens are different and the attenuation drifts of the primary and secondary screens are different, even when the production line leaves a factory, the color difference between the two screens is calibrated to be within the color difference threshold, and the color difference of the screens may exceed the color difference threshold along with the use time, for example, after the use time exceeds 100 hours.
In this example, the main screen is used as the first screen, the sub-screen is used as the second screen, and the color difference threshold is 3 ‰.
As shown in fig. 8, the method for calibrating the screen of the present application example includes the following steps:
Wherein, the weighted average working brightness L corresponding to the total working duration is:
wherein l1, l2, ln are working brightness corresponding to t1, t2, tn working time respectively.
The color difference drift relationship of the maximum brightness and the intermediate brightness along with the working time is a known color difference drift relationship, as shown in fig. 4.
Wherein, according to the weighted average working brightness L, the total working time t is more than or equal to
Determining that the color difference drift corresponding to the total working time t and the weighted average working brightness L is greater than or equal to a color difference threshold value;
wherein, tmaxThe working time, t, corresponding to the chromatic aberration drift exceeding 3 per mill when the screen works under the maximum brightnessmidAnd the color difference drift exceeds 3 per mill of corresponding working time when the screen works under the intermediate brightness.
And step 205, calibrating the color coordinates of the screen by adjusting the color coordinate register level corresponding to the color coordinates of the screen, so that the color difference of the color coordinates after the two screens are shifted is minimum or less than 3 per thousand.
And step 206, updating the information of the adjusted color coordinate register grade and storing the information into a color difference calibration file.
Information of the adjusted color coordinate register level, e.g. register settings, may be updated to a new calibration file. The new color difference calibration file can be stored in the persistence partition, and data cannot be erased when factory settings are restored. And loading the latest color difference calibration file every time the computer is started, and loading and setting the latest color difference calibration file into a register.
The embodiment of the present invention further provides a device for screen calibration, which is used to implement the foregoing embodiments and implementation manners, and the description of the device is omitted here. As used below, the term "module" may be a combination of software and/or hardware that implements a predetermined function. Although the means described in the following embodiments may be implemented in software, an implementation in hardware, or a combination of software and hardware is also possible and contemplated.
As shown in fig. 9, an embodiment of the present invention provides a device for screen calibration, including:
the counting module 31 is used for counting the working brightness and the working duration of the screen;
and the calibration module 32 is configured to determine that the color difference drift of the screen is greater than or equal to a color difference threshold according to the working brightness and the working duration of the screen, and calibrate the color coordinate of the screen.
In one embodiment, the method further comprises:
and the acquisition module is used for acquiring the relation between the working brightness and the working duration of the screen and the color difference drift.
In one embodiment, the relationship between the operating brightness and the operating duration of the screen and the color difference drift is as follows: and when the color difference drift of the screen is equal to the color difference threshold, fitting a relation curve between the working brightness and the working duration according to the plurality of groups of working brightness and the corresponding working duration.
In an embodiment, the statistic module 31 is configured to:
and counting the working brightness and the corresponding working time of each time period of the screen.
In one embodiment, the calibration module 32 is configured to:
obtaining total working time and weighted average working brightness corresponding to the total working time according to the working brightness of each time period of the screen and the corresponding working time, comparing the weighted average working brightness and the total working time with a preset relation, and determining that the color difference drift corresponding to the weighted average working brightness and the total working time is greater than or equal to a color difference threshold; the preset relationship is the relationship between the working brightness and the working duration of the screen and the color difference drift.
In one embodiment, the calibration module 32 is configured to:
calculating the total working time length t, wherein t is t1+ t2+.. + tn, t1, t2,. wherein tn is the working time corresponding to each time period, and n is an integer greater than or equal to 1;
calculating the weighted average working brightness L corresponding to the total working time length,
wherein l1, l2, ln are working brightness corresponding to t1, t2, tn working time respectively.
In one embodiment, the calibration module 32 is configured to:
when the total working duration t is greater than or equal to the working duration corresponding to the weighted average working brightness L in the relation curve, determining that the color difference drift corresponding to the total working duration t and the weighted average working brightness L is greater than or equal to a color difference threshold;
and the relation curve is a relation curve of the working brightness and the working duration of the screen when the color difference drift is equal to the color difference threshold.
In one embodiment, the calibration module 32 is configured to:
according to the weighted average working brightness L, the total working time t is more than or equal to
Determining that the color difference drift corresponding to the total working time t and the weighted average working brightness L is greater than or equal to a color difference threshold value;
wherein L is1And t1Respectively a first working brightness and a corresponding first working duration L of the screen when the color difference drift is equal to the color difference threshold2And t2Respectively, a second working brightness and a corresponding second working duration of the screen when the color difference drift is equal to the color difference threshold.
In one embodiment, the screen is one or more, and the calibration module 32 is configured to:
determining that the color difference drift of any one screen is greater than or equal to a color difference threshold, and calibrating the color coordinate of each screen; or
And determining that the color difference drift of any one screen is greater than or equal to a color difference threshold, and calibrating the color coordinates of the screen with the color difference drift greater than or equal to the color difference threshold.
In one embodiment, the calibration module 32 is configured to: according to the drift amount of the color coordinate of the screen, adjusting the color coordinate of the screen to at least one of the following:
the color difference from the target color coordinate is minimum;
the color difference with the target color coordinate is less than a color difference threshold.
In one embodiment, when the number of screens is at least two, the calibration module 32 is configured to: according to the drift amount of the color coordinate of each screen, adjusting the color coordinate of the screen to at least one of the following:
the color difference between the color coordinates of the at least two screens and the target color coordinates is minimum;
the color difference between the color coordinates of the at least two screens and the target color coordinate is less than a color difference threshold;
the color difference of the color coordinates between the at least two screens is minimal;
the color difference between the at least two screens is less than a color difference threshold.
In one embodiment, the calibration module 32 is configured to: adjusting the color coordinate register level corresponding to the color coordinate of the screen;
the device further comprises: and the recording module is used for updating the information of the adjusted color coordinate register grade and storing the information into the color difference calibration file.
In the embodiment of the invention, when the color difference drift of the screen is more than or equal to the color difference threshold, the color coordinate of the screen can be automatically calibrated without external equipment such as a color analyzer and the like, the implementation is simple and convenient, and the user experience is improved.
An embodiment of the present invention further provides a terminal, including:
a processor;
a memory for storing the processor-executable instructions;
one or more screens;
wherein the processor is configured to perform the following operations:
counting the working brightness and the working duration of the screen;
and according to the working brightness and the working duration of the screen, determining that the color difference drift of the screen is greater than or equal to a color difference threshold, and calibrating the color coordinate of the screen.
In an embodiment, the processor is further configured to:
and determining that the color difference drift of the screen is greater than or equal to a color difference threshold according to the working brightness and the working duration of the screen, and acquiring the relation between the working brightness and the working duration of the screen and the color difference drift before calibrating the color coordinates of the screen.
In one embodiment, the relationship between the operating brightness and the operating duration of the screen and the color difference drift is as follows: and when the color difference drift of the screen is equal to the color difference threshold, fitting a relation curve between the working brightness and the working duration according to the plurality of groups of working brightness and the corresponding working duration.
In one embodiment, the processor is configured to: and counting the working brightness and the corresponding working time of each time period of the screen.
In one embodiment, the processor is configured to:
obtaining total working time and weighted average working brightness corresponding to the total working time according to the working brightness of each time period of the screen and the corresponding working time, comparing the weighted average working brightness and the total working time with a preset relation, and determining that the color difference drift corresponding to the weighted average working brightness and the total working time is greater than or equal to a color difference threshold;
the preset relationship is the relationship between the working brightness and the working duration of the screen and the color difference drift.
In one embodiment, the processor is configured to:
calculating the total working time length t, wherein t is t1+ t2+.. + tn, t1, t2,. wherein tn is the working time corresponding to each time period, and n is an integer greater than or equal to 1;
calculating the weighted average working brightness L corresponding to the total working time length,
wherein l1, l 2.. and ln are respectively the working brightness corresponding to the working time of t1, t 2.. and tn, and n is an integer greater than or equal to 1.
In one embodiment, the processor is configured to:
when the total working duration t is greater than or equal to the working duration corresponding to the weighted average working brightness L in the relation curve, determining that the color difference drift corresponding to the total working duration t and the weighted average working brightness L is greater than or equal to a color difference threshold;
and the relation curve is a relation curve of the working brightness and the working duration of the screen when the color difference drift is equal to the color difference threshold.
In one embodiment, the processor is configured to:
according to the weighted average working brightness L, the total working time t is more than or equal to
Determining that the color difference drift corresponding to the total working time t and the weighted average working brightness L is greater than or equal to a color difference threshold value;
wherein L is1And t1Respectively a first working brightness and a corresponding first working duration L of the screen when the color difference drift is equal to the color difference threshold2And t2Respectively, the second work of the screen when the color difference drift is equal to the color difference threshold valueAnd making the brightness and the corresponding second working time length.
In one embodiment, the processor is configured to:
determining that the color difference drift of any one screen is greater than or equal to a color difference threshold, and calibrating the color coordinate of each screen; or
And determining that the color difference drift of any one screen is greater than or equal to a color difference threshold, and calibrating the color coordinates of the screen with the color difference drift greater than or equal to the color difference threshold.
In one embodiment, the processor is configured to: according to the drift amount of the color coordinate of the screen, adjusting the color coordinate of the screen to at least one of the following:
the color difference from the target color coordinate is minimum;
the color difference with the target color coordinate is less than a color difference threshold.
In one embodiment, the processor is configured to: according to the drift amount of the color coordinate of each screen, adjusting the color coordinate of the screen to at least one of the following:
the color difference between the color coordinates of the at least two screens and the target color coordinates is minimum;
the color difference between the color coordinates of the at least two screens and the target color coordinate is less than a color difference threshold;
the color difference of the color coordinates between the at least two screens is minimal;
the color difference between the at least two screens is less than a color difference threshold.
In an embodiment, the processor is further configured to:
adjusting the color coordinate register level corresponding to the color coordinate of the screen;
and updating the information of the adjusted color coordinate register grade and storing the information into a color difference calibration file.
The embodiment of the invention also provides a computer-readable storage medium, which stores computer-executable instructions, wherein the computer-executable instructions are used for executing the screen calibration method.
In this embodiment, the storage medium may include, but is not limited to: a U-disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic or optical disk, and other various media capable of storing program codes.
It will be apparent to those skilled in the art that the modules or steps of the embodiments of the present invention described above may be implemented by a general purpose computing device, they may be centralized on a single computing device or distributed across a network of multiple computing devices, and alternatively, they may be implemented by program code executable by a computing device, such that they may be stored in a storage device and executed by a computing device, and in some cases, the steps shown or described may be performed in an order different from that described herein, or they may be separately fabricated into integrated circuit modules, or multiple ones of them may be fabricated into a single integrated circuit module. Thus, embodiments of the invention are not limited to any specific combination of hardware and software.
Although the embodiments of the present invention have been described above, the above description is only for the convenience of understanding the present invention, and is not intended to limit the present invention. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (16)
1. A method of screen calibration, comprising:
counting the working brightness and the working duration of the screen, wherein the working brightness and the corresponding working time of each time period of the screen are counted;
obtaining the relation between the working brightness and the working duration of the screen and the color difference drift, wherein the relation between the working brightness and the working duration of the screen and the color difference drift is as follows: when the color difference drift of the screen is equal to the color difference threshold, fitting a relation curve between the working brightness and the working duration according to the plurality of groups of working brightness and the corresponding working duration; according to the working brightness and the working duration of the screen, determining that the color difference drift of the screen is greater than or equal to a color difference threshold value, and calibrating the color coordinate of the screen;
the determining that the color difference drift of the screen is greater than or equal to a color difference threshold according to the working brightness and the working duration of the screen comprises the following steps: obtaining total working time and weighted average working brightness corresponding to the total working time according to the working brightness and the corresponding working time of each time period of the screen, comparing the weighted average working brightness and the total working time with a preset relation, and determining that color difference drift corresponding to the weighted average working brightness and the total working time is greater than or equal to a color difference threshold value, wherein the preset relation is the relation between the working brightness and the working time of the screen and the color difference drift;
the calibrating the color coordinates of the screen includes: according to the drift amount of the color coordinate of the screen, adjusting the color coordinate of the screen to at least one of the following:
the color difference from the target color coordinate is minimum;
the color difference with the target color coordinate is less than a color difference threshold.
2. The method of claim 1, wherein obtaining the total operating time and the weighted average operating brightness corresponding to the total operating time according to the operating brightness and the corresponding operating time of each time segment of the screen comprises:
calculating the total working time length t, wherein t is t1+ t2+.. + tn, t1, t2,. wherein tn is the working time corresponding to each time period, and n is an integer greater than or equal to 1;
calculating the weighted average working brightness L corresponding to the total working time length,
wherein l1, l 2.. and ln are respectively the working brightness corresponding to the working time of t1, t 2.. and tn, and n is an integer greater than or equal to 1.
3. The method of claim 2, wherein comparing the weighted average operating brightness and the total operating duration with a predetermined relationship to determine that a color difference drift corresponding to the weighted average operating brightness and the total operating duration is greater than or equal to a color difference threshold comprises:
when the total working duration t is greater than or equal to the working duration corresponding to the weighted average working brightness L in the relation curve, determining that the color difference drift corresponding to the total working duration t and the weighted average working brightness L is greater than or equal to a color difference threshold;
and the relation curve is a relation curve of the working brightness and the working duration of the screen when the color difference drift is equal to the color difference threshold.
4. The method of claim 3, wherein comparing the weighted average operating brightness and the total operating duration with a predetermined relationship to determine that a color difference drift corresponding to the weighted average operating brightness and the total operating duration is greater than or equal to a color difference threshold comprises:
according to the weighted average working brightness L, the total working time t is more than or equal to
Determining that the color difference drift corresponding to the total working time t and the weighted average working brightness L is greater than or equal to a color difference threshold value;
wherein L is1And t1Respectively a first working brightness and a corresponding first working duration L of the screen when the color difference drift is equal to the color difference threshold2And t2Respectively, a second working brightness and a corresponding second working duration of the screen when the color difference drift is equal to the color difference threshold.
5. The method of claim 1, wherein the screen is one or more, wherein determining that the color difference drift of the screen is greater than or equal to a color difference threshold, and wherein calibrating the color coordinates of the screen comprises:
determining that the color difference drift of any one screen is greater than or equal to a color difference threshold, and calibrating the color coordinate of each screen; or
And determining that the color difference drift of any one screen is greater than or equal to a color difference threshold, and calibrating the color coordinates of the screen with the color difference drift greater than or equal to the color difference threshold.
6. The method of claim 1, wherein when the screen includes at least two, the calibrating the color coordinates of the screen comprises: according to the drift amount of the color coordinate of each screen, adjusting the color coordinate of the screen to at least one of the following:
the color difference between the color coordinates of the at least two screens and the target color coordinates is minimum;
the color difference between the color coordinates of the at least two screens and the target color coordinate is less than a color difference threshold;
the color difference of the color coordinates between the at least two screens is minimal;
the color difference between the at least two screens is less than a color difference threshold.
7. The method of claim 1 or 6,
the adjusting the color coordinates of the screen includes: adjusting the color coordinate register level corresponding to the color coordinate of the screen;
the method further comprises the following steps: and updating the information of the adjusted color coordinate register grade and storing the information into a color difference calibration file.
8. An apparatus for screen calibration, comprising:
the counting module is used for counting the working brightness and the working duration of the screen and counting the working brightness and the corresponding working time of each time period of the screen;
the acquisition module is used for acquiring the relation between the working brightness and the working duration of the screen and the color difference drift, and the relation between the working brightness and the working duration of the screen and the color difference drift is as follows: when the color difference drift of the screen is equal to the color difference threshold, fitting a relation curve between the working brightness and the working duration according to the plurality of groups of working brightness and the corresponding working duration; the calibration module is used for determining that the color difference drift of the screen is greater than or equal to a color difference threshold value according to the working brightness and the working duration of the screen, and calibrating the color coordinate of the screen according to the drift amount of the color coordinate of the screen;
the calibration module is configured to: obtaining total working time and weighted average working brightness corresponding to the total working time according to the working brightness of each time period of the screen and the corresponding working time, comparing the weighted average working brightness and the total working time with a preset relation, and determining that the color difference drift corresponding to the weighted average working brightness and the total working time is greater than or equal to a color difference threshold;
the preset relation is the relation between the working brightness and the working duration of the screen and the color difference drift;
the calibration module is configured to: according to the drift amount of the color coordinate of the screen, adjusting the color coordinate of the screen to at least one of the following:
the color difference from the target color coordinate is minimum;
the color difference with the target color coordinate is less than a color difference threshold.
9. The apparatus of claim 8, wherein the calibration module is to:
calculating the total working time length t, wherein t is t1+ t2+.. + tn, t1, t2,. wherein tn is the working time corresponding to each time period, and n is an integer greater than or equal to 1;
calculating the weighted average working brightness L corresponding to the total working time length,
wherein l1, l 2.. and ln are respectively the working brightness corresponding to the working time of t1, t 2.. and tn, and n is an integer greater than or equal to 1.
10. The apparatus of claim 9, wherein the calibration module is to:
when the total working duration t is greater than or equal to the working duration corresponding to the weighted average working brightness L in the relation curve, determining that the color difference drift corresponding to the total working duration t and the weighted average working brightness L is greater than or equal to a color difference threshold;
and the relation curve is a relation curve of the working brightness and the working duration of the screen when the color difference drift is equal to the color difference threshold.
11. The apparatus of claim 9, wherein the calibration module is to:
according to the weighted average working brightness L, the total working time t is more than or equal to
Determining that the color difference drift corresponding to the total working time t and the weighted average working brightness L is greater than or equal to a color difference threshold value;
wherein L is1And t1Respectively a first working brightness and a corresponding first working duration L of the screen when the color difference drift is equal to the color difference threshold2And t2Respectively, a second working brightness and a corresponding second working duration of the screen when the color difference drift is equal to the color difference threshold.
12. The apparatus of claim 10, wherein the screen is one or more, the calibration module to:
determining that the color difference drift of any one screen is greater than or equal to a color difference threshold, and calibrating the color coordinate of each screen; or
And determining that the color difference drift of any one screen is greater than or equal to a color difference threshold, and calibrating the color coordinates of the screen with the color difference drift greater than or equal to the color difference threshold.
13. The apparatus of claim 8, wherein the calibration module, when the screen is at least two, is to: according to the drift amount of the color coordinate of each screen, adjusting the color coordinate of the screen to at least one of the following:
the color difference between the color coordinates of the at least two screens and the target color coordinates is minimum;
the color difference between the color coordinates of the at least two screens and the target color coordinate is less than a color difference threshold;
the color difference of the color coordinates between the at least two screens is minimal;
the color difference between the at least two screens is less than a color difference threshold.
14. The apparatus of claim 8 or 13,
the calibration module is configured to: adjusting the color coordinate register level corresponding to the color coordinate of the screen;
the device further comprises: and the recording module is used for updating the information of the adjusted color coordinate register grade and storing the information into the color difference calibration file.
15. A terminal, comprising:
a processor;
a memory for storing the processor-executable instructions;
one or more screens;
wherein the processor is configured to perform the following operations:
counting the working brightness and the working duration of the screen, and counting the working brightness and the corresponding working time of each time period of the screen;
obtaining the relation between the working brightness and the working duration of the screen and the color difference drift, wherein the relation between the working brightness and the working duration of the screen and the color difference drift is as follows: when the color difference drift of the screen is equal to the color difference threshold, fitting a relation curve between the working brightness and the working duration according to the plurality of groups of working brightness and the corresponding working duration;
according to the working brightness and the working duration of the screen, determining that the color difference drift of the screen is greater than or equal to a color difference threshold, and calibrating the color coordinate of the screen according to the drift amount of the color coordinate of the screen;
determining that the color difference drift of the screen is greater than or equal to a color difference threshold according to the working brightness and the working duration of the screen, wherein the determining comprises the following steps: obtaining total working time and weighted average working brightness corresponding to the total working time according to the working brightness and the corresponding working time of each time period of the screen, comparing the weighted average working brightness and the total working time with a preset relation, and determining that color difference drift corresponding to the weighted average working brightness and the total working time is greater than or equal to a color difference threshold value, wherein the preset relation is the relation between the working brightness and the working time of the screen and the color difference drift;
the calibrating the color coordinates of the screen includes: according to the drift amount of the color coordinate of the screen, adjusting the color coordinate of the screen to at least one of the following:
the color difference from the target color coordinate is minimum;
the color difference with the target color coordinate is less than a color difference threshold.
16. A computer-readable storage medium storing computer-executable instructions for performing the method of screen calibration of any of claims 1-7.
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| CN110875021A (en) * | 2018-08-29 | 2020-03-10 | 中兴通讯股份有限公司 | Screen display control method, device, equipment and readable storage medium |
| CN109814827B (en) * | 2019-01-28 | 2022-05-13 | Oppo广东移动通信有限公司 | Display control method and device of equipment, electronic equipment and storage medium |
| WO2020177124A1 (en) * | 2019-03-07 | 2020-09-10 | 深圳市柔宇科技有限公司 | Display control method, display device and electronic device |
| CN109976450B (en) * | 2019-03-15 | 2020-12-22 | Oppo广东移动通信有限公司 | Screen calibration method and device, electronic equipment and storage medium |
| CN109872705A (en) * | 2019-04-22 | 2019-06-11 | 深圳创维－Rgb电子有限公司 | Display color temperature adjusting method, device, terminal and storage medium |
| CN110277048A (en) * | 2019-06-10 | 2019-09-24 | 惠州市华星光电技术有限公司 | Display device and the method for adjusting display device color difference |
| CN110808003B (en) | 2019-09-06 | 2021-01-15 | 华为技术有限公司 | Compensation method and electronic equipment |
| CN112185317A (en) * | 2020-08-17 | 2021-01-05 | 深圳市广和通无线股份有限公司 | Color calibration method, device, computer equipment and storage medium |
| CN117524090B (en) * | 2023-12-08 | 2024-06-21 | 广州卓奥科技有限公司 | LED display color self-calibration method and system based on artificial intelligence |
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| CN104485068B (en) * | 2014-12-02 | 2017-02-01 | 西安诺瓦电子科技有限公司 | Luminance-chrominance correction method and system of LED (Light Emitting Diode) display screen |
| CN105989795A (en) * | 2015-02-03 | 2016-10-05 | 联想(北京)有限公司 | Screen color adjustment method and device |
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| CN107507579A (en) * | 2017-08-18 | 2017-12-22 | 上海中兴软件有限责任公司 | A kind of screen backlight control and method to set up, device, multi-screen terminal and storage medium |
| CN108257579B (en) * | 2018-01-17 | 2020-06-05 | 中兴通讯股份有限公司 | Screen calibration method and device and terminal |
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