CN105976789B - A method of automatic adjustment brightness of display screen - Google Patents
A method of automatic adjustment brightness of display screen Download PDFInfo
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- CN105976789B CN105976789B CN201610398270.1A CN201610398270A CN105976789B CN 105976789 B CN105976789 B CN 105976789B CN 201610398270 A CN201610398270 A CN 201610398270A CN 105976789 B CN105976789 B CN 105976789B
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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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Abstract
The present invention disclose it is a kind of automatic adjustment brightness of display screen method can be with on-line measurement, by passing through connection color analysis instrument on the display screen of brightness irregularities, obtain the related data of brightness irregularities, and pass through the analysis to uneven data on the ends PC, obtain adjusting information, and inserted information is adjusted in the call function of liquid crystal drive board, to allow liquid crystal display automatic regulating lightness.The present invention is adjusted in real time, need not be artificial go access according to calculating again；And it for the randomness of liquid crystal display brightness irregularities characteristic, can individually adjust one by one；It is directly adjusted, is directly deposited in flash using liquid crystal drive board；The side of such automatic adjustment brightness of display screen can change image quality, improve user experience, accelerate the universal of 4k2k high-resolution pictures.
Description
Technical field
The present invention relates to display screen technology field more particularly to a kind of methods of automatic adjustment brightness of display screen.
Background technology
With the continuous development of electronic technology, display can be all used in various equipment, people are in daily life and work
In work, display almost can be all touched daily, and quality, color and the brightness of display directly affect the product to be shown letter
The visual effect of breath also directly affects the eyesight of people.With the arriving in liquid crystal display epoch, in order to adapt to the mankind to picture
Experience requirements it is growing, successively there is the high definition picture of the resolution ratio such as FHD, QHD, UHD.The workmanship of liquid crystal display is got over
Come finer, the resolution ratio of support is also higher and higher.But manufacturing firm's technique of liquid crystal display is irregular, causes in the market
Liquid crystal display different properties, irregularity in brightness is universal.Solving liquid crystal display brightness irregularities sex chromosome mosaicism becomes one
The key for changing image quality, improving user experience.Currently, it is of less demanding to image quality in public field, it does not need generally
It solves；The fields such as show in medical treatment, optics, it is more demanding to image quality, generally select that high-quality, irregularity in brightness is small
Liquid crystal display.And brightness irregularities be since back light distributional difference makes brightness over the display not uniform enough, by
In the difference of each liquid crystal display manufacturer manufacture craft, brightness irregularities distributed areas are also random, general backlight
In the left and right sides, the reason of light synthesizes, keeps intermediate brightness higher, and the brightness at both ends is relatively low, aobvious in medical treatment display, optics
Show equal fields, cause the erroneous judgement of experimental study, generates ill effect.
Invention content
Shortcoming present in view of the above technology, the present invention provide a kind of burned program of USB interface, with color point
The method for the quick adjustment liquid crystal display brightness irregularities that analyzer measures in real time.
In order to achieve the above object, the present invention provides a kind of method of automatic adjustment brightness of display screen, can quickly adjust
The method of liquid crystal display brightness irregularities, including following steps：
Step 1, installation driving：Color analysis instrument is connected on the ends PC, and the driving of color analysis instrument is installed on the ends PC
And software；
Step 2：Attachment device establishes testing engineering：The screen for opening a brightness irregularities, display board is clamped
Debugging board simultaneously connects the ends PC, establishes the survey engineering of color analysis instrument；It adjusts the brightness of viewfmder image and observation on one side is found a view
The image of device adjusts the position of measurement object object on one side, and rotating lens focuses to color analysis instrument, adjusts exposure rate；
Step 3：Emulation testing obtains data：It carries out simulated measurement and confirms the degree of irregularity in brightness；Complete color
Color analyzer is to the measurement of irregularity in brightness and obtains data：
Step 4：Analyze data：A tables of data is generated after color analysis instrument collects liquid crystal display brightness data, is examined
Consider the huge problem of data, only take 9 liquid crystal display regions luminance information (Y1, Y2, Y3, Y4, Y5, Y6, Y7, Y8,
Y9) and average brightness is taken：△ Y=(Y1+Y2+Y3+Y4+Y5+Y6+Y7+Y8+Y9)/9.
In order to only describe luminance information, R=G=B is enabled；It is expressed as follows：
△ Y1=Y1-Y=△ R1；△ Y2=Y2-Y=△ R2；△ Y3=Y3-Y=△ R3；△ Y4=Y4-Y=△ R4；
△ Y5=Y5-Y=△ R5；△ Y6=Y6-Y=△ R6；△ Y7=Y7-Y=△ R7；△ Y8=Y8-Y=△ R8；△ Y9=Y9-
Y=△ R9；
By calculating：The brightness uniformity of entire liquid crystal display at Y, the numerical value of RGB is reduced into △ R1 at 1；At 2
The numerical value of RGB is reduced into △ R2；When △ R2 are less than zero, i.e., the numerical value of RGB increase △ R2 are similarly calculated into the △ R at 9
Numerical value；
Step 5：It is communicated with the IIC of liquid crystal drive board using the ends PC, the calling letter of information filling liquid crystal drive board will be adjusted
In number, which is superimposed with the RGB regulated values of liquid crystal drive board and is output to liquid crystal display jointly.
Step 6：Liquid crystal drive board brightness irregularities are directly presented on liquid crystal display after adjusting, according to liquid crystal display
Screen feeds back to the luminance information of color analysis instrument, passes to the ends PC and is calculated, liquid crystal drive board is adjusted again, until meeting
Until measurement accuracy.
Wherein, after the completion of the step 2 and step 3, it is also necessary to which the dedicated ends PC software completes the algorithm of step 4.
Wherein, after the completion of the step 4, by USB interface by ISPtool directly control liquid crystal drive board output it is bright
Angle value forms effective negative-feedback regu- lation to liquid crystal display.
Wherein, in the step 1 to step 6, essence of the brightness irregularities degree in continuous close brightness disproportionation evenness
Angle value.The beneficial effects of the invention are as follows：
Compared with prior art, a kind of method of automatic adjustment brightness of display screen of the present invention can in real time be adjusted with on-line measurement
Section, need not be artificial go access according to calculating again；It, can and for the randomness of liquid crystal display brightness irregularities characteristic
Individually to adjust one by one；It is directly adjusted, is directly deposited in flash using liquid crystal drive board；Such automatic adjustment is aobvious
The side of display screen brightness can change image quality, improve user experience, accelerate the universal of 4k2k high-resolution pictures.
Description of the drawings
Fig. 1 is a kind of automatic adjustment brightness of display screen schematic diagram in the embodiment of the present invention；
The step of Fig. 2 is a kind of automatic adjustment brightness of display screen in the embodiment of the present invention is schemed.
Major components symbol description is as follows：
1, liquid crystal display 2, two-dimensional color analyzer CA2500 instruments
3, the ends PC 4, liquid crystal drive board.
Specific implementation mode
In order to more clearly state the present invention, the present invention is further described below in conjunction with the accompanying drawings.
The present invention provides a kind of method of automatic adjustment brightness of display screen, can quickly adjust liquid crystal display brightness disproportionation
Even method, in the present embodiment, the color analyzer that uses is the two-dimensional color analysis that is produced due to Konica Minolta company
Instrument CA-2500, can be with pinpoint accuracy to various products (such as tv display screen, computer display and automobile instrument panel, hand
The light-emitting zone of switch disk etc.) it carries out surface (two dimension) luminance deviation and chromaticity distortion assessment and is illuminating scene into line light source
With the assessment of Luminance Distribution.And the mainboard of this liquid crystal display uses MST9U01V1 mainboards, therefore in the present embodiment, change automatic
The method for adjusting brightness of display screen includes following steps：
Step 1, installation driving：Two-dimensional color analyzer CA-2500 instruments 2 are connected on the ends PC 3, and are pacified on the ends PC 3
The driving of dress installation two-dimensional color analyzer CA-2500 instruments 2 and software；
Step 2：Attachment device establishes testing engineering：The liquid crystal display 1 of a brightness irregularities is opened, it will
MST9U01V1 mainboards connect debugging board and connect the ends PC 3, establish the survey engineering of two-dimensional color analyzer CA2500 instruments 2；It adjusts
It saves the brightness of viewfmder image and observes the image of view finder on one side, adjust the position of measurement object object, rotating lens pair on one side
The CA2500 focusings of two-dimensional color analyzer, adjust exposure rate；
Step 3：Emulation testing obtains data：It carries out simulated measurement and confirms the degree of irregularity in brightness；Complete two
Color analysis instrument CA2500 instruments 2 are tieed up to the measurement of irregularity in brightness and obtain data：
Step 4 analyzes data：After two-dimensional color analyzer CA2500 instruments 2 collect 1 brightness data of liquid crystal display
Generate a tables of data, it is contemplated that the huge problem of data, only take 91 regions of liquid crystal display luminance information (Y1, Y2,
Y3, Y4, Y5, Y6, Y7, Y8, Y9) and take average brightness：△ Y=(Y1+Y2+Y3+Y4+Y5+Y6+Y7+Y8+Y9)/9.
In order to only describe luminance information, R=G=B is enabled；It is expressed as follows：
△ Y1=Y1-Y=△ R1；△ Y2=Y2-Y=△ R2；△ Y3=Y3-Y=△ R3；△ Y4=Y4-Y=△ R4；
△ Y5=Y5-Y=△ R5；△ Y6=Y6-Y=△ R6；△ Y7=Y7-Y=△ R7；△ Y8=Y8-Y=△ R8；△ Y9=Y9-
Y=△ R9；
By calculating：The brightness uniformity of entire liquid crystal display at Y, the numerical value of RGB is reduced into △ R1 at 1；At 2
The numerical value of RGB is reduced into △ R2；When △ R2 are less than zero, i.e., the numerical value of RGB is increased into △ R2.Similarly, the △ R at 9 are calculated
Numerical value；This algorithm is completed, needs to complete above-mentioned data by being built-in with the program of above-mentioned operation method in the installation of the ends PC
Analytic process；After the completion of the step 4, liquid crystal drive board is directly controlled by ISPtool by USB interface and export brightness value
To liquid crystal display, effective negative-feedback regu- lation is formed.
Step 5 is provided with liquid crystal drive board 4 on liquid crystal display 1, and the ends PC 3 are communicated with the IIC of liquid crystal drive board 4, will
In the call function for adjusting information filling liquid crystal drive board 4, the call function and the RGB regulated values of liquid crystal drive board 4 are folded jointly
Add and is output to liquid crystal display 1.
Step 6,1 brightness irregularities of liquid crystal drive board are directly presented on after adjusting on liquid crystal display 1, according to liquid crystal
Display screen 1 feeds back to the luminance information of two-dimensional color analyzer CA2500 instruments 2, passes to the ends PC 3 and is calculated, is adjusted again
Liquid crystal drive board 4, until coincidence measurement precision.Precision of the brightness irregularities degree in continuous close brightness disproportionation evenness
Value.
Advantage of the invention is that：
1, on-line measurement adjusts in real time, need not be artificial go access according to calculating again；
2, it for the randomness of liquid crystal display brightness irregularities characteristic, can individually adjust one by one；
3, it is directly adjusted, is directly deposited in flash using liquid crystal drive board；
4, the present invention can change image quality, improve user experience, accelerate the universal of 4k2k high-resolution pictures.
Disclosed above is only several specific embodiments of the present invention, but the present invention is not limited to this, any ability
What the technical staff in domain can think variation should all fall into protection scope of the present invention.
Claims (4)
1. a kind of method of automatic adjustment brightness of display screen, which is characterized in that including following steps：
Step 1, installation driving：It connects color analysis instrument on the ends PC, and the driving of color analysis instrument and soft is installed on the ends PC
Part；
Step 2：Attachment device establishes testing engineering：The screen for opening a brightness irregularities, display board is clamped and is debugged
Plate simultaneously connects the ends PC, establishes the survey engineering of color analysis instrument；It adjusts the brightness of viewfmder image and observes view finder on one side
Image adjusts the position of measurement object object on one side, and rotating lens focuses to color analysis instrument, adjusts exposure rate；
Step 3：Emulation testing obtains data：It carries out simulated measurement and confirms the degree of irregularity in brightness；Complete color point
Analyzer is to the measurement of irregularity in brightness and obtains data；
Step 4：Analyze data：A tables of data is generated after color analysis instrument collects liquid crystal display brightness data, it is contemplated that
The huge problem of data only takes the luminance information (Y1, Y2, Y3, Y4, Y5, Y6, Y7, Y8, Y9) in 9 liquid crystal display regions simultaneously
Take average brightness：△ Y=(Y1+Y2+Y3+Y4+Y5+Y6+Y7+Y8+Y9)/9；
In order to only describe luminance information, R=G=B is enabled；It is expressed as follows：
△ Y1=Y1-Y=△ R1；△ Y2=Y2-Y=△ R2；△ Y3=Y3-Y=△ R3；△ Y4=Y4-Y=△ R4；△Y5
=Y5-Y=△ R5；△ Y6=Y6-Y=△ R6；△ Y7=Y7-Y=△ R7；△ Y8=Y8-Y=△ R8；△ Y9=Y9-Y=
△R9；
By calculating：The brightness uniformity of entire liquid crystal display at Y, the numerical value of RGB is reduced into △ R1 at 1；It will at 2
The numerical value of RGB reduces △ R2；When △ R2 are less than zero, i.e., the numerical value of RGB increase △ R2 are similarly calculated the △ R's at 9
Numerical value；
Step 5：It is communicated with the IIC of liquid crystal drive board using the ends PC, the call function of information filling liquid crystal drive board will be adjusted
In, which is superimposed with the RGB regulated values of liquid crystal drive board and is output to liquid crystal display jointly；
Step 6：Liquid crystal drive board brightness irregularities are directly presented on liquid crystal display after adjusting, anti-according to liquid crystal display
It feeds the luminance information of color analysis instrument, passes to the ends PC and calculated, liquid crystal drive board is adjusted again, until coincidence measurement
Until precision.
2. a kind of method of automatic adjustment brightness of display screen according to claim 1, which is characterized in that in the step 2
After the completion of step 3, it is also necessary to which the dedicated ends PC software completes the algorithm of step 4.
3. a kind of method of automatic adjustment brightness of display screen according to claim 1, which is characterized in that in the step 4
After the completion, liquid crystal drive board is directly controlled by ISPtool by USB interface and export brightness value to liquid crystal display, formed effective
Negative-feedback regu- lation.
4. a kind of method of automatic adjustment brightness of display screen according to claim 1, which is characterized in that in the step 1
Into step 6, accuracy value of the brightness irregularities degree in continuous close brightness disproportionation evenness.
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| CN106782422A (en) * | 2017-03-23 | 2017-05-31 | 南京巨鲨显示科技有限公司 | A kind of full frame digital brightness balanced device of liquid crystal display and its bearing calibration |
| CN110349553B (en) * | 2019-06-28 | 2021-08-20 | 苏州佳世达电通有限公司 | Positioning method for color correction module built in display device |
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| CN202584681U (en) * | 2012-04-11 | 2012-12-05 | 南京巨鲨显示科技有限公司 | Display with brightness adjustment |
| CN104809974A (en) * | 2015-04-22 | 2015-07-29 | 信利（惠州）智能显示有限公司 | Automatic gamma and white balance correction method and device for display device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006047603A (en) * | 2004-08-04 | 2006-02-16 | Sony Corp | Image display device |
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|---|---|---|---|---|
| CN201015215Y (en) * | 2007-01-23 | 2008-01-30 | 珠海石头电子有限公司 | Color-brightness consistency regulating system |
| CN102237074A (en) * | 2010-04-21 | 2011-11-09 | 瀚宇彩晶股份有限公司 | Display device capable of automatically adjusting brightness and operation method thereof |
| CN102348126A (en) * | 2010-08-02 | 2012-02-08 | 厦门华侨电子股份有限公司 | Method for realizing automatic adjustment of Gamma curve of television through computer |
| CN202584681U (en) * | 2012-04-11 | 2012-12-05 | 南京巨鲨显示科技有限公司 | Display with brightness adjustment |
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