CN102136265A - Method for controlling display array - Google Patents
Method for controlling display array Download PDFInfo
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- CN102136265A CN102136265A CN201110062595XA CN201110062595A CN102136265A CN 102136265 A CN102136265 A CN 102136265A CN 201110062595X A CN201110062595X A CN 201110062595XA CN 201110062595 A CN201110062595 A CN 201110062595A CN 102136265 A CN102136265 A CN 102136265A
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- display
- output valve
- brightness
- brightness output
- brilliance control
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Abstract
The invention relates to a method for controlling a display array. In order to solve the technical problem, the method for controlling the display array is provided. The display array comprises a plurality of displays; and the method for controlling the display array comprises the following steps of: controlling each display in the display array to generate a first brightness output value respectively according to a plurality of first brightness control value; controlling each display in the display array to generate a second brightness output value respectively according to a plurality of second brightness control value, wherein the first brightness control value and the second brightness control value which control the same display are different; determining a characteristic relation corresponding to each display respectively according to the plurality of first brightness output values and the plurality of second brightness output values; and controlling each corresponding display in the display array according to each characteristic relation.
Description
[technical field]
The invention relates to a kind of control method of display array, particularly about a kind of control method of brightness uniformity of the output picture of keeping display array.
[background technology]
In outdoor occasion or displaying occasion, display can splice the video wall that is commonly called as to carry out the output of image, to be with array way.This display array can provide and be several times as much as the indication range that the single display device can provide, the display array 100 that its synoptic diagram such as Fig. 1 illustrated.In order to ensure the homogeneity and the consistance of display frame, display array is logical to be made up of the display with identical display characteristic (as: contrast, brightness, color range etc.).Although include the inborn property difference of display in consideration in the original design, in practical application, still have following problem.
At first, because the difference on making, even if display is that prerequisite designs with identical display characteristic, even if but the display of final institute output receives identical image signal, still have the difference on brightness or the color.Yet this can be by just removing flat middle difference slightly by the image processing controller do adjustment at the beginning of the assembled display array.Other problem is exactly, display array is in follow-up use, still can face the problem (as: backlight module) aging to the display interior assembly, and cause output brightness decay, but the degree of display ages also has uneven phenomenon, for instance, is positioned at the middle display B of display array, owing to receive more used heat, aging degree also is tending towards obvious.Therefore, the brightness that display B can export obviously can be lower than the brightness that display A can export.Thus, can make the image output of display array 100 that brightness and the uneven phenomenon of color are arranged.
[summary of the invention]
The object of the present invention is to provide a kind of control method of display array, this display array comprises a plurality of displays, and this control method comprises: each display of controlling respectively in this display array according to a plurality of first brilliance control values produces the first brightness output valve respectively; Each display of controlling respectively in this display array according to a plurality of second brilliance control values produces the second brightness output valve respectively, and this first brilliance control value and this second brilliance control value of wherein controlling same display are inequality; Come definite respectively pairing characteristic relation of each display according to a plurality of first brightness output valves and a plurality of second brightness output valve: and control corresponding each display in this display array according to each characteristic relation.
As optional technical scheme, determine that the step of pairing this characteristic relation of each display includes: at each display: first difference of determining this first brightness output valve and this second brightness output valve; Determine second difference of this first brilliance control value and this second brilliance control value; And determine this characteristic relation according to the proportionate relationship of this first difference and this second difference.
As optional technical scheme, the step of controlling corresponding each display in this display array according to each characteristic relation comprises: control each display in this display array according to each characteristic relation, so that these a plurality of displays all can have same brightness output valve under same video signal input.
As optional technical scheme, the step of controlling corresponding each display in this display array according to each characteristic relation comprises: select a certain luminance output valve in these a plurality of first brightness output valves certainly; Determine each display each brilliance control corrected value when this certain luminance output valve according to each characteristic relation; And proofread and correct corresponding each display according to each brilliance control corrected value.
As further alternative technical scheme, this certain luminance output valve is the minimum value in these a plurality of first brightness output valves.
As further alternative technical scheme, brilliance control corrected value CX
iComputing formula as follows:
CX
i＝C1
i-(O1
i-O1
min)/Δλ
i；
Wherein, C1
iIt is the first brilliance control value; O1
iIt is the first brightness output valve; O1
MinBe when the first brilliance control value, the minimum brightness output valve in each display; Δ λ
iIt is characteristic relation.
As optional technical scheme, these a plurality of first brilliance control values are respectively the highest brightness value that each display is supported.
As optional technical scheme, these a plurality of second brilliance control values are respectively half of these a plurality of first brilliance control values.
As optional technical scheme, determine that the step of this first brightness output valve that each display produces comprises: capture this display array and produce first image based on the first shown output picture of these a plurality of first brilliance control values; And analyze this first brightness output valve that this first image determines that each display produced; And the step of determining this second brightness output valve that each display is produced comprises: capture this display array and produce second image based on the second shown output picture of these a plurality of second brilliance control values; And analyze this second brightness output valve that this second image determines that each display produced.
Compared with prior art, control method of the present invention can be in order to the brightness uniformity of the output picture of guaranteeing display array.
[description of drawings]
Fig. 1 illustrates that the brightness of display array exports uneven problem.
Fig. 2 is for using a display array of control method of the present invention.
Fig. 3 is the process flow diagram of an embodiment of control method of the present invention.
Fig. 4 illustrates that the present invention determines the mode of the characteristic relation of each display.
Fig. 5 illustrates that the present invention determines the mode of the brilliance control corrected value that each display is required.
[embodiment]
In the middle of instructions and claim, used some vocabulary to censure specific assembly.Those skilled in the art should understand, and hardware manufacturer may be called same assembly with different nouns.This specification and claims are not used as distinguishing the mode of assembly with the difference of title, but the criterion that is used as distinguishing with the difference of assembly on function.Be an open term mentioned " comprising " in instructions and the claim in the whole text, so should be construed to " comprise but be not limited to ".In addition, " couple " speech and comprise any indirect means that are electrically connected that directly reach at this.Therefore, be coupled to second device, then represent this first device can directly be electrically connected in this second device, or be electrically connected to this second device indirectly by other device or connection means if describe first device in the literary composition.
Please refer to Fig. 2, it is the synoptic diagram of display array.As shown in the figure, display array 200 includes display M
1～M
9, distinctly demonstrate the part of a complete picture.Can be used for controlling as shown in Figure 2 display array about control method of the present invention, its process flow diagram please refer to Fig. 3.Should be noted in the discussion above that the display array that control method of the present invention can be controlled might not be consistent with the display quantity in display 200 arrays, or be that identical arrangement mode is arranged, the display array of any other type all belongs to application category of the present invention.Moreover the inventive method includes step 310～340.In each step, the operation of being carried out is as follows:
Step 310: according to a plurality of first brilliance control value C1
1～C1
9Control each the display M in this display array respectively
1～M
9Produce the first brightness output valve O1 respectively
1～O1
9
Step 320: according to a plurality of second brilliance control value C2
1～C2
9Control each the display M in this display array respectively
1～M
9Produce the second brightness output valve O2 respectively
1～O2
9
Step 330: according to a plurality of first brightness output valve O1
1～O1
9With a plurality of second brightness output valve O2
1～O2
9Come to determine respectively the pairing characteristic relation Δ λ of each display
1～Δ λ
9: and
Step 340: according to each characteristic relation Δ λ
1～Δ λ
9Control corresponding each display M in the display array 200
1～M
9
At first, in step 310, a plurality of first brilliance control value C1
1～C1
9Can be input to each the display M in the display array
1～M
9, make display M
1～M
9Produce corresponding brightness relatively, and then determine each display M
1～M
9The output picture is with respect to the first brilliance control value C1
1～C1
9The first brightness output valve O1
1～O1
9Such operation can be reached by relevant luminance detection mode, and in order to promote efficient, in an embodiment, the present invention can utilize specific mode to make every display (for example: numeral shown in Figure 2) show different patterns on its indication range, then, just can in a luminance detection operation, determine the O1 of each display according to the pairing brightness of different digital
1～O1
9Similarly, every display M
1～M
9The second brightness output valve O2
1～O2
9Also being based on such mode of operation determines (but based on a plurality of second brilliance control value C2
1～C2
9Institute produces relatively).Should be noted in the discussion above that to determining each display M
iCharacteristic relation Δ λ
iSo, control the first brilliance control value C1 of same display
iWith the second brilliance control value C2
iMust be inequality, reason is asked for an interview following.
Decision display M
iCharacteristic relation Δ λ
iThe detail with reference Fig. 4 and the following explanation of step 330.At first, determined first and second brightness output valve O1 in abovementioned steps 310 and 320
iWith O2
iCan be used to calculation display M
iPairing one first difference S1
iThen, correspond respectively to first and second brightness output valve O1
iWith O2
iThe first brilliance control value C1
iWith the second brilliance control value C2
iCan be used to calculation display M
iPairing one second difference S2
iAt last, display M
iCharacteristic relation Δ λ
iWill be according to the second difference S2
iWith the first difference S1
iBetween a ratio (S1
i/ S2
i) concern and decide.According to such mode, the pairing characteristic relation of each display can be determined.That is to say characteristic relation Δ λ
iRepresenting be the brilliance control of display and brightness output between the slope of possible linear relationship, therefore, having only ought the first brilliance control value C1
iWith the second brilliance control value C2
iUnder the situation inequality, way is just arranged according to first and second brightness output valve O1
iWith O2
iDetermine the slope of linear relationship.
At last, in step 340, the inventive method is according to each characteristic relation (Δ λ
i) control each the display M in the display array 200
1～M
9, so that display M
1～M
9Under same video signal input, all can have same brightness output valve.That is to say, and though display between because of characteristic gap that brightness decay caused has muchly, control method of the present invention can be based on display M
1～M
9Pairing characteristic relation is adjusted its final brightness of exporting, and exports the consistance of the brightness of pictures to keep display array 200.And in an embodiment, step 340 includes following substep again:
Step 342: from a plurality of first brightness output valve O1
1～O1
9In select a certain luminance output valve
Step 344: according to each characteristic relation Δ λ
1～Δ λ
9Decide each display M
1～M
9Required each brilliance control corrected value when producing this certain luminance output valve; And
Step 346: control corresponding each display according to each brilliance control corrected value.
Please refer to Fig. 5 about clearer explanation.Note that to asking clear Fig. 5 is only in the linear relationship of brightness output to part display shown in the brilliance control curve map, and and not shown all display linear relationships.At first, in step 342, control method of the present invention is in the first brightness output valve O1
1～O1
9In select a certain luminance output valve, for example: graphic in display M
5The first brightness output valve O1
5Then, in step 344, further according to each characteristic relation Δ λ
iDecide each display in this certain luminance output valve O1
5The brilliance control corrected value CX of Shi Suoxu
i, for example: display M in graphic
4According to its characteristic relation Δ λ
4As can be known in this certain luminance output valve O1
5The brilliance control corrected value CX of Shi Suoxu
4, display M
6According to its characteristic relation Δ λ
6As can be known in this certain luminance output valve O1
5The brilliance control corrected value CX of Shi Suoxu
6At last, in step 346, control method of the present invention is just controlled corresponding each display according to each brilliance control corrected value, for example: with brilliance control corrected value CX
4Control display M
4, with brilliance control corrected value CX
6Control display M
6, make each display reach identical certain luminance output valve O1
5
In simple terms, display M
iBrilliance control corrected value CX
iCan calculate according to following formula:
CX
i＝C1
i-(O1
i-O1
min)/Δλ
i
Wherein, O1
MinFor when the first brilliance control value, the minimum brightness output valve in each display is as O1
5
In the preferred embodiment of the present invention, selected certain luminance output valve is a plurality of first brightness output valve O1 in step 342
1～O1
9In a minimum value, as brightness output valve O1
5And corresponding to the first brightness output valve O1
1～O1
9A plurality of first brilliance control value C1
1～C1
9Then be display M
1～M
9The maximal value of the brilliance control value of supporting.This is because the notion of control method of the present invention is to make the brightness output of all displays to have consistance, in order to take into account the most tangible display of brightness decay, so must find out the most tangible display of brightness decay earlier (as display M
5), and come other display of strangulation to carry out brightness output based on the high-high brightness output valve that this display can produce.And the high-high brightness output valve in order to determine that this display can produce then must be imported with its high-high brightness controlling value that can support, to obtain the high-high brightness output valve that this display can produce.At last, be benchmark just with this value, determine the brilliance control corrected value of other display.In addition, in one embodiment of the invention, the second brilliance control value C2
1～C2
9Be respectively the first brilliance control value C1
1～C1
9Half.
In addition, determine display M
1～M
9The first brightness output valve O1 that is produced
1～O1
9Step comprise: the acquisition display array 200 based on a plurality of first brilliance control value C1
1～C1
9One first shown output picture produces one first image; And analyze this first image and determine each display M
1～M
9The first brightness output valve O1 that is produced
1～O1
9For instance, when display array 200 based on a plurality of first brilliance control value C1
1～C1
9Shown one first output picture, this moment control method of the present invention can pass through an image capture unit (as: digital camera), capture this first image, in the middle of include display M
1～M
9The optional network specific digit that shows respectively, as: 1～9.And according to first image, determine numeral 1～9 pairing brightness value respectively, can determine each display M
1～M
9Based on the first brilliance control value C1
1～C1
9The first brightness output valve O1 that produces respectively
1～O1
9In like manner, determine display M
1～M
9The second brightness output valve O2 that is produced
1～O2
9Step comprise: the acquisition display array 200 based on these a plurality of second brilliance control value C2
1～C2
9One second shown output picture produces one second image; And analyze this second brightness output valve that this second image determines that each display produced.
Moreover control method of the present invention may be put into practice with following method, as: carry out a software or pass through pure hardware circuit by a processor.In the middle of, this processor may be the processor of multi-usage or special-purpose, as: the processor of Intel (R) the x86 framework that company produced, or the reduced instruction set computer type processor of ARM framework.Moreover, then may include programmed logic, instruction and data in this software, in the middle of include the pairing program code of control method of the present invention.This software may be stored in a computer-readable media, carry out for this processor, for example: ROM (read-only memory) (read-only memory, ROM), random access memory (random-access memory, RAM), flash memory various forms of storage devices such as (flash memory).
Comprehensive, control method of the present invention can avoid the brightness of display array or color to export uneven problem.And because control method of the present invention is to be benchmark with the brightness that the display in the display array can export, so can momentarily carry out the correction that integral body is exported based on the present state of display, with the consistance of guaranteeing to export.
Though the present invention discloses as above with embodiment, so it is not that protection scope of the present invention is when being as the criterion with claims in order to qualification the present invention.
Claims (9)
1. the control method of a display array, this display array comprises a plurality of displays, it is characterized in that this control method comprises:
Each display of controlling respectively in this display array according to a plurality of first brilliance control values produces the first brightness output valve respectively;
Each display of controlling respectively in this display array according to a plurality of second brilliance control values produces the second brightness output valve respectively, and this first brilliance control value and this second brilliance control value of wherein controlling same display are inequality;
Come to determine respectively the pairing characteristic relation of each display according to a plurality of first brightness output valves and a plurality of second brightness output valve: and
Control corresponding each display in this display array according to each characteristic relation.
2. control method as claimed in claim 1 is characterized in that the step of determining pairing this characteristic relation of each display includes:
At each display:
Determine first difference of this first brightness output valve and this second brightness output valve;
Determine second difference of this first brilliance control value and this second brilliance control value; And
Proportionate relationship according to this first difference and this second difference is determined this characteristic relation.
3. control method as claimed in claim 1 is characterized in that the step of controlling corresponding each display in this display array according to each characteristic relation comprises:
Control each display in this display array according to each characteristic relation, so that these a plurality of displays all can have same brightness output valve under same video signal input.
4. control method as claimed in claim 1 is characterized in that the step of controlling corresponding each display in this display array according to each characteristic relation comprises:
In these a plurality of first brightness output valves, select a certain luminance output valve;
Determine each display each brilliance control corrected value when this certain luminance output valve according to each characteristic relation; And
Proofread and correct corresponding each display according to each brilliance control corrected value.
5. control method as claimed in claim 4 is characterized in that this certain luminance output valve is the minimum value in these a plurality of first brightness output valves.
6. control method as claimed in claim 4 is characterized in that brilliance control corrected value CX
iComputing formula as follows:
CX
i＝C1
i-(O1
i-O1
min)/Δλ
i；
Wherein, C1
iIt is the first brilliance control value; O1
iIt is the first brightness output valve; O1
MinBe when the first brilliance control value, the minimum brightness output valve in each display; Δ λ
iIt is characteristic relation.
7. control method as claimed in claim 1 is characterized in that these a plurality of first brilliance control values are respectively the highest brightness value that each display is supported.
8. control method as claimed in claim 1 is characterized in that these a plurality of second brilliance control values are respectively half of these a plurality of first brilliance control values.
9. control method as claimed in claim 1 is characterized in that the step of this first brightness output valve that definite each display is produced comprises:
Capture this display array and produce first image based on the first shown output picture of these a plurality of first brilliance control values; And
Analyze this first brightness output valve that this first image determines that each display produced; And the step of determining this second brightness output valve that each display is produced comprises:
Capture this display array and produce second image based on the second shown output picture of these a plurality of second brilliance control values; And
Analyze this second brightness output valve that this second image determines that each display produced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110062595XA CN102136265B (en) | 2011-03-16 | 2011-03-16 | Method for controlling display array |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110062595XA CN102136265B (en) | 2011-03-16 | 2011-03-16 | Method for controlling display array |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102136265A true CN102136265A (en) | 2011-07-27 |
| CN102136265B CN102136265B (en) | 2013-11-27 |
Family
ID=44296027
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110062595XA Active CN102136265B (en) | 2011-03-16 | 2011-03-16 | Method for controlling display array |
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| Country | Link |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105308671A (en) * | 2013-06-14 | 2016-02-03 | Eizo株式会社 | Multi-monitor system, and computer program and display device used in multi-monitor system |
| WO2019033801A1 (en) * | 2017-08-18 | 2019-02-21 | 中兴通讯股份有限公司 | Method and device for controlling screen backlight, method and device for setting screen backlight, and multi-screen terminal |
| CN114765017A (en) * | 2021-01-13 | 2022-07-19 | 辉达公司 | Pixel degradation tracking and compensation for display technology |
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|---|---|---|---|---|
| JP2003274319A (en) * | 2002-03-13 | 2003-09-26 | Astro Design Inc | System and method for video correction, program, and recording medium |
| US20080064590A1 (en) * | 2006-09-07 | 2008-03-13 | Leonard Edward Bogan | Activated mixed metal oxide oxidation catalysts |
| CN101814272A (en) * | 2009-02-20 | 2010-08-25 | 纬创资通股份有限公司 | Display device and brightness adjusting method thereof |
-
2011
- 2011-03-16 CN CN201110062595XA patent/CN102136265B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003274319A (en) * | 2002-03-13 | 2003-09-26 | Astro Design Inc | System and method for video correction, program, and recording medium |
| US20080064590A1 (en) * | 2006-09-07 | 2008-03-13 | Leonard Edward Bogan | Activated mixed metal oxide oxidation catalysts |
| CN101814272A (en) * | 2009-02-20 | 2010-08-25 | 纬创资通股份有限公司 | Display device and brightness adjusting method thereof |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105308671A (en) * | 2013-06-14 | 2016-02-03 | Eizo株式会社 | Multi-monitor system, and computer program and display device used in multi-monitor system |
| WO2019033801A1 (en) * | 2017-08-18 | 2019-02-21 | 中兴通讯股份有限公司 | Method and device for controlling screen backlight, method and device for setting screen backlight, and multi-screen terminal |
| US11257441B2 (en) * | 2017-08-18 | 2022-02-22 | Xi'an Zhongxing New Software Co., Ltd | Method and device for controlling screen backlight, method and device for setting screen backlight, and multi-screen terminal |
| CN114765017A (en) * | 2021-01-13 | 2022-07-19 | 辉达公司 | Pixel degradation tracking and compensation for display technology |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102136265B (en) | 2013-11-27 |
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