CN104091566B - Display screen bright chroma control method, LED display control method and system - Google Patents
Display screen bright chroma control method, LED display control method and system Download PDFInfo
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- CN104091566B CN104091566B CN201410345471.6A CN201410345471A CN104091566B CN 104091566 B CN104091566 B CN 104091566B CN 201410345471 A CN201410345471 A CN 201410345471A CN 104091566 B CN104091566 B CN 104091566B
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Abstract
The present invention relates to display screen bright chroma control method, LED display control method and system.Wherein, this control method is applied to include that the LED display of multiple casing, the plurality of casing electrically connect with control system, and in control system, storage has the bright chroma correction coefficient of multiple casing.Specifically, it includes step: gather the current bright chroma information of each body partial of multiple casing；The current bright chroma information utilizing each casing gathered calculates the public light tone angle value of multiple casing；The bright chroma regulation desired value of multiple casings is set according to public light tone angle value；The difference between the current bright chroma information of each casing and bright chroma regulation desired value is utilized to calculate the bright chroma correction matrix of each casing；And the bright chroma correction matrix of each casing is uploaded to control system.This control method can save the plenty of time, cost-effective, simple and practical, be applicable to lease occasion difference casing bright chroma uniformity regulation.
Description
Technical field
The present invention relates to display correction and control technical field, being specifically related to a kind of display screen bright chroma regulation side
Method, a kind of LED display control method and a kind of LED display control program.
Background technology
LED lease screen is variety show or holds some large-scale recreational activities occasions, temporarily with the form of lease
Be used for the LED display screen dedicated decorated, due to its have quick for installation, mobility is strong, cheap,
The provisional feature such as by force, can meet the demand of many special occasions.LED screen lessor is difficult to only have foot
The casing of enough same batch bright chroma, is therefore typically made up of the multiple batches of casing purchased at times.?
During buying casing, casing the most all have passed through the correction of pointwise bright chroma, and its box house bright chroma uniformity is relatively
Good.
But, due to the particularity of lease, the lease screen of different customer requirements varies in size, and lease makes every time
The casing number used also is not quite similar, and LED in use exists brightness decay and colourity is inclined
Moving, this may result in use time different casing property of there are differences in brightness decay value, chroma offset amount,
Affect the brightness of lease screen, colourity uniformity；The luminance difference of different batches casing, color gamut space difference etc.
Also lead to full screen image quality decrease.These are used the casing that the time is different, or different batches
Lease box body splicing get up, then there will be box house uniformity preferably and between casing, bright chroma difference is relatively
Big phenomenon.
It is therefore proposed that a kind of simple and practical LED display bright chroma control method, fast and effeciently to solve
Certainly there is brightness and/or colourity difference between lease casing and affect that the overall bright chroma of lease screen is conforming asks
Topic is one of technology the most urgently to be resolved hurrily.
Summary of the invention
For the technological deficiency overcoming prior art to exist, the embodiment of the present invention proposes a kind of display screen bright chroma and adjusts
Joint method, a kind of LED display control method and a kind of LED display control program.
Specifically, a kind of display screen bright chroma control method that the embodiment of the present invention proposes, it is applied to include many
The LED display of individual casing, the plurality of casing electrically connects with control system, and deposits in described control system
Contain the bright chroma correction coefficient of the plurality of casing.Wherein, described display screen bright chroma control method includes
Step: utilize each body partial the brightest of the bright chroma the plurality of casing of collecting device collection in worksite
Chrominance information rather than the current bright chroma information of each casing all LED pixel point；Utilize each of collection
The current bright chroma information of the described local of individual casing calculates the public light tone angle value of the plurality of casing；Root
The bright chroma regulation desired value of the plurality of casing is set according to described public light tone angle value；Utilize each casing
The current bright chroma information of described local and described bright chroma regulation desired value between difference calculate each
The bright chroma correction matrix of individual casing, the corresponding bright chroma correction matrix of each of which casing is for right
The bright chroma correction coefficient of each the LED pixel point in multiple LED pixel of described casing is modified；
And the described bright chroma correction matrix of each casing is uploaded to described control system.
In one embodiment of the invention, each body partial of the plurality of casing of above-mentioned collection work as
Front bright chroma information is to be realized by light gun.
In one embodiment of the invention, above-mentioned according to the described public light tone angle value the plurality of casing of setting
Bright chroma regulation desired value step include: by the public chromatic value of the plurality of casing directly as described
Colourity regulation desired value in bright chroma regulation desired value；Or by the public chromatic value pair of the plurality of casing
The common color gamut answered be changed accordingly because public brightness value sacrifices the setting of percentage after colour gamut corresponding to
Cie color coordinate is as the colourity regulation desired value in described bright chroma regulation desired value.
In one embodiment of the invention, above-mentioned the described bright chroma correction matrix of each casing is uploaded
Step to described control system includes: by described bright chroma correction matrix and the described control of each casing
In system, the bright chroma correction coefficient of the corresponding casing of storage is uploaded after combining and forming new bright chroma correction coefficient
To described control system.
In one embodiment of the invention, the above-mentioned described bright chroma correction matrix by each casing and institute
After stating the bright chroma correction coefficient combination new bright chroma correction coefficient of formation of the corresponding casing of storage in control system
The step being uploaded to described control system includes: by the described bright chroma correction matrix of each casing with described
In control system storage bright chroma correction coefficient in corresponding described casing multiple LED pixel points in each
The bright chroma correction coefficient of individual LED pixel point is respectively calculated to obtain described new bright chroma correction coefficient.
Additionally, a kind of LED display control method that the embodiment of the present invention proposes, it is applied to include multiple casing
And the LED display screen system of the control system electrically connected with the plurality of casing.Wherein, described LED shows
Control method includes step: receive raw display data；From the nonvolatile memory of described control system
Call bright chroma correction coefficient and bright chroma correction matrix and be calculated new bright chroma correction coefficient；Utilize institute
State new bright chroma correction coefficient to carry out described raw display data showing number after bright chroma is corrected
According to；And will show after correction that data are sent to the plurality of casing and show.
In one embodiment of the invention, above-mentioned LED display control method is implemented in described control system
The programming device of receiving card.
In one embodiment of the invention, above-mentioned bright chroma correction coefficient and bright chroma correction matrix are called also
The step being calculated new bright chroma correction coefficient includes: by bright chroma correction matrix and the described light tone called
Corresponding to the bright chroma correction coefficient of each the LED pixel point in multiple LED pixel points in degree correction coefficient
It is respectively calculated to obtain described new bright chroma correction coefficient.
It addition, a kind of LED display control program that the embodiment of the present invention proposes, including: raw display data
Receiver module, bright chroma correction coefficient correcting module, display Data correction module and display module.Wherein,
Raw display data receiver module is with receiving raw display data；Bright chroma correction coefficient correcting module for from
Nonvolatile memory calls bright chroma correction coefficient and bright chroma correction matrix and is calculated new bright chroma
Correction coefficient；Display Data correction module is used for utilizing described new bright chroma correction coefficient to described original display
Data carry out showing data after bright chroma is corrected；And display module will be for showing number after correction
Show according to being sent to LED display.
In one embodiment of the invention, above-mentioned bright chroma correction coefficient correcting module includes for by described
Bright chroma correction matrix and the described bright chroma correction coefficient called correspond to the multiple of described LED display
The bright chroma correction coefficient of each the LED pixel point in LED pixel point is respectively calculated to obtain described
New bright chroma correction coefficient.
From the foregoing, it will be observed that the display screen bright chroma control method that the embodiment of the present invention proposes, it is not necessary to staff exists
All LED of on-the-spot each casing of Resurvey light chrominance information to calculate new bright chroma correction
Number, only need to gather the current bright chroma information of each body partial and just can calculate bright chroma simply and repair
Positive matrices, utilizes this bright chroma correction matrix to carry out corresponding original bright chroma correction coefficient and is modified, thus can
Reach to solve the purpose of bright chroma difference between casing.The method can save the plenty of time, cost-effective,
Simple and practical, be applicable to lease occasion difference casing bright chroma uniformity regulation.
By the detailed description below with reference to accompanying drawing, the other side of the present invention and feature become obvious.But
It should be known that this accompanying drawing is only the purpose design rather than the restriction as the scope of the present invention explained,
This is because it should refer to appended claims.It should also be noted that unless otherwise noted, it is not necessary to depend on
Ratio draws accompanying drawing, and they only try hard to structure described herein and flow process are described conceptually.
Accompanying drawing explanation
Fig. 1 is the steps flow chart schematic diagram of a kind of display screen bright chroma control method of the embodiment of the present invention.
Fig. 2 is the steps flow chart schematic diagram of a kind of LED display control method of the embodiment of the present invention.
Fig. 3 is the module diagram of a kind of LED display control program of the embodiment of the present invention.
Detailed description of the invention
Understandable for enabling the above-mentioned purpose of the present invention, feature and advantage to become apparent from, the most right
The detailed description of the invention of the present invention is described in detail.
Refer to Fig. 1, the step stream of its a kind of display screen bright chroma control method proposed for the embodiment of the present invention
Journey schematic diagram.The display screen bright chroma control method of the present embodiment is suitable for application in including the LED of multiple casing
Display screen, the plurality of casing electrically connects with control system, and in described control system, storage has the plurality of
The bright chroma correction coefficient of casing.Wherein, LED display for example, monochromatic LED display screen, dual-colored LED
Display screen or full-color LED display screen；Such as one LED lamp panel of single casing or the LED of multiple cascade
Plate；Single led lamp plate is by including LED drive chip and multiple LED pixel point, and single led picture
Vegetarian refreshments includes a color LED chip/LED or multiple color LED chip/LED.Control system
Deliver to after being mainly used in video source signal carries out Data Format Transform, gray scale layout and bright chroma correction
LED lamp panel in each LED box of LED display shows, it such as includes sending card and connects
Receiving card, even some LED display can be by sending card Function Integration Mechanism to receiving card, but the present invention is not with this
It is limited.
Holding above-mentioned, the display screen bright chroma control method of the present embodiment mainly includes step S11 as shown in Figure 1
To S19, specific as follows:
Step S11: the bright chroma information of each body partial of the multiple casings in collection LED display,
This acquisition operations can be realized by light gun, naturally it is also possible to uses other bright chroma collecting devices to carry out.
Step S13: utilize the current bright chroma information of each body partial gathered to calculate the public affairs of multiple casing
Light tone angle value altogether.In the present embodiment, the computational methods of public light tone angle value are as follows: (1) is for public brightness value
Calculating can be that the various same color LED luminance information data in the current bright chroma information of multiple casings is divided
Do not minimize, and public using these minimum of a values as various same color LED of the plurality of casing
Brightness value, or these minimum of a values are suitably adjusted certain percentage (such as raise 0～20% or lower one
Determine percentage) after respectively as the public brightness value of various same color LED of the plurality of casing.(2) for
The calculating of public chromatic value can be according to the chrominance information data in the current bright chroma information of multiple casings respectively
Draw the colour gamut of its correspondence, then obtain common color gamut (namely multiple in CIE colour gamut coordinate diagram of these colour gamuts
The public triangle of triangle), and CIE coordinate corresponding to this common color gamut is the public of the plurality of casing
Chromatic value.So far, public brightness value and the public chromatic value of the plurality of casing i.e. constitutes the plurality of casing
Public light tone angle value.
Step S15: the bright chroma setting the plurality of casing according to the public light tone angle value of the plurality of casing is adjusted
Program scale value.In the present embodiment, for how to set the plurality of casing according to described public light tone angle value
Bright chroma regulation desired value, then can use the following two kinds situation (a) and (b): (a) is by the plurality of casing
Public light tone angle value regulates desired value directly as described bright chroma；B () sets a brightness and sacrifices percentage, also
I.e. sacrifice the certain percentage of public brightness value；The setting of percentage, public colourity is sacrificed corresponding to this brightness
Value also can do corresponding change；Assume that the colour gamut that public chromatic value is corresponding is CG1, sacrifice hundred when setting brightness
Proportion by subtraction be 8% (namely public brightness value sacrifice 8%), then the mutually the most deserved meeting of colour gamut CG1 change into colour gamut CG2,
And colour gamut CG2 is positioned in the range of colour gamut CG1, and the cie color corresponding to colour gamut CG2 after changing
Coordinate is revised public chromatic value；The most then can be by revised public brightness value and public chromatic value
Constitute the bright chroma regulation desired value of the plurality of casing.
Step S17: utilize described current bright chroma information and the described bright chroma regulation desired value of each casing
Between difference calculate the bright chroma correction matrix of each casing.Such as, for full-color LED display screen
Casing, its single led pixel generally includes R, G, B three-color LED (LED chip or the LED of encapsulation
Lamp), the bright chroma correction coefficient of single led pixel is then usually 3 × 3 matrixes；Therefore this enforcement
In example, as a example by full-color LED display screen, the bright chroma correction matrix of calculated single casing is the most also
It is 3 × 3 matrixes, for the bright chroma correction coefficient difference to each LED pixel point in this casing
It is modified.
Step S19: the described bright chroma correction matrix of each casing is uploaded to described control system.This reality
Execute in example, can be to use the following two kinds mode: the bright chroma correction matrix of each casing is directly uploaded by (1)
To control system；(2) by the bright chroma correction matrix of each casing and the corresponding casing of storage in control system
Bright chroma correction coefficient combine be calculated new bright chroma correction coefficient after be uploaded to control system again, such as
Replace the bright chroma correction coefficient of previously stored corresponding casing.Additionally, for mode (2), it specifically may be used
For the bright chroma correction coefficient by the bright chroma correction matrix of this casing He each LED pixel point of this casing
It is modified respectively calculating to obtain the revised new bright chroma correction coefficient of single led pixel, each
The set of the revised new bright chroma correction coefficient of LED pixel point is the new bright chroma correction of this casing
Number.Afterwards, control system just can utilize bright chroma correction matrix combine storage bright chroma correction coefficient or
Directly utilize new bright chroma correction coefficient and the raw display data received is carried out bright chroma correction, improve whereby
The show uniformity of the multiple casings in LED display.
Refer to Fig. 2, its be the embodiment of the present invention a kind of LED display control method steps flow chart signal
Figure.The LED display control method of the present embodiment be suitable for application in including multiple casing and with the plurality of casing
The LED display screen system of the control system of electrical connection.Specifically, this LED display control method such as performs
In the programming device such as FPGA of the receiving card of control system, but the present invention is not limited thereto.This
The LED display control method of embodiment such as includes the step S21 to S27 shown in Fig. 2.
Step S21: receive raw display data.
Step S23: call bright chroma correction coefficient and bright chroma correction matrix and be calculated the correction of new bright chroma
Coefficient；What bright chroma correction coefficient and bright chroma correction matrix such as stored in the controls herein is non-volatile
In property memory, and the method calculating new bright chroma correction coefficient can be: by bright chroma correction matrix with multiple
The bright chroma correction coefficient of each the LED pixel point in LED pixel point is respectively calculated to obtain the brightest
Chromaticity correction coefficient.In the present embodiment, the corresponding bright chroma correction matrix of such as each casing, and not
With casing can have identical or different bright chroma correction matrixs.
Step S25: utilize described new bright chroma correction coefficient that described raw display data is carried out bright chroma correction
Data are shown after being corrected.
Step S27: will show after correction that data are sent to the plurality of casing and show.In the present embodiment,
Showing data to be eventually sent in the LED lamp panel of corresponding casing after correction to show, such LED shows
Screen can reach preferably overall bright chroma uniformity.
Refer to Fig. 3, its be the embodiment of the present invention a kind of LED display control program steps flow chart signal
Figure.The LED display control program of the present embodiment is such as come real by the slave computer software being provided with in control system
Existing, the slave computer software being the most concretely installed on the receiving card in control system realizes.
As it is shown on figure 3, the LED display control program 30 of the present embodiment includes raw display data receiver module
31, bright chroma correction coefficient correcting module 33, display Data correction module 35 and display module 35.Its
In, raw display data receiver module is with receiving raw display data；Bright chroma correction coefficient correcting module is used
In calling bright chroma correction coefficient and correction matrix and being calculated new bright chroma correction coefficient；Display data school
Positive module is used for utilizing described new bright chroma correction coefficient that described raw display data is carried out bright chroma and corrects
Data are shown after correction；And display module is for showing after correction that data are sent to LED display and enter
Row display.It is noted that the method calculating new bright chroma correction coefficient can be: by bright chroma correction square
Battle array and the bright chroma correction coefficient of each the LED pixel point in multiple LED pixel points be respectively calculated with
Obtain new bright chroma correction coefficient.
In sum, the display screen bright chroma control method of the embodiment of the present invention, it is not necessary to staff is at the scene
All LED of each casing of Resurvey light chrominance information to calculate new bright chroma correction coefficient,
The current bright chroma information that only need to gather each body partial just can calculate bright chroma correction square simply
Battle array, utilizes this bright chroma correction matrix to carry out corresponding original bright chroma correction coefficient and is modified, thus can reach
Solve the purpose of bright chroma difference between casing.The method can save plenty of time, cost-effective, simple
Practical, be applicable to lease the bright chroma uniformity regulation of occasion difference casing.
Specific case used herein shows controlling party to display screen bright chroma control method of the present invention, LED
Method and the principle of LED display control program and embodiment are set forth, and the explanation of above example is only
It is the method and core concept thereof being adapted to assist in and understanding the present invention；General technology people simultaneously for this area
Member, according to the thought of the present invention, the most all will change, to sum up
Described, this specification content should not be construed as limitation of the present invention, and protection scope of the present invention should be with appended
Claim be as the criterion.
Claims (8)
1. a display screen bright chroma control method, is applied to include that the LED display of multiple casing, the plurality of casing electrically connect with control system, and in described control system, storage has the bright chroma correction coefficient of the plurality of casing；It is characterized in that, described display screen bright chroma control method includes step:
Utilize the current bright chroma information of each body partial of the bright chroma the plurality of casing of collecting device collection in worksite rather than the current bright chroma information of each casing all LED pixel point；
The current bright chroma information utilizing the described local of each casing gathered calculates the public light tone angle value of the plurality of casing；
The bright chroma regulation desired value of the plurality of casing is set according to described public light tone angle value；
Utilizing the difference between the current bright chroma information of the described local of each casing and described bright chroma regulation desired value to calculate the bright chroma correction matrix of each casing, the corresponding bright chroma correction matrix of each of which casing is modified for the bright chroma correction coefficient of each the LED pixel point in the multiple LED pixel to described casing；And
The described bright chroma correction matrix of each casing is uploaded to described control system.
2. display screen bright chroma control method as claimed in claim 1, it is characterised in that the current bright chroma information utilizing each body partial of the bright chroma the plurality of casing of collecting device collection in worksite is to be realized by light gun.
3. display screen bright chroma control method as claimed in claim 1, it is characterised in that include according to the step of the bright chroma regulation desired value of the described public light tone angle value the plurality of casing of setting:
By the public chromatic value of the plurality of casing directly as the colourity regulation desired value in described bright chroma regulation desired value；Or
The cie color coordinate corresponding to colour gamut after common color gamut corresponding for the public chromatic value of the plurality of casing being changed accordingly because of the setting of public brightness value sacrifice percentage is as the colourity regulation desired value in described bright chroma regulation desired value.
4. display screen bright chroma control method as claimed in claim 1, it is characterised in that the step that the described bright chroma correction matrix of each casing is uploaded to described control system is included:
The bright chroma correction coefficient of the corresponding casing of storage in the described bright chroma correction matrix of each casing and described control system is combined and after forming new bright chroma correction coefficient, is uploaded to described control system.
5. display screen bright chroma control method as claimed in claim 4, it is characterized in that, the step being uploaded to described control system in the described described bright chroma correction matrix by each casing and described control system after the bright chroma correction coefficient combination new bright chroma correction coefficient of formation of the corresponding casing of storage includes:
It is respectively calculated to obtain described new bright chroma correction coefficient by the bright chroma correction coefficient of the described bright chroma correction matrix of each casing with each the LED pixel point in multiple LED pixel points of corresponding described casing in the bright chroma correction coefficient of storage in described control system.
6. a LED display control method, is applied to include multiple casing and the LED display screen system of control system electrically connected with the plurality of casing, it is characterised in that include step:
Receive raw display data；
From the nonvolatile memory of described control system, call bright chroma correction coefficient and bright chroma correction matrix and be calculated new bright chroma correction coefficient；
Described new bright chroma correction coefficient is utilized to carry out described raw display data showing data after bright chroma is corrected；And
To show after correction that data are sent to the plurality of casing and show；
Wherein, call bright chroma correction coefficient and bright chroma correction matrix described in and be calculated the step of new bright chroma correction coefficient and include:
It is respectively calculated to obtain described new bright chroma correction coefficient by the bright chroma correction coefficient corresponding to each the LED pixel point in multiple LED pixel points in bright chroma correction matrix and the described bright chroma correction coefficient called.
7. LED display control method as claimed in claim 6, it is characterised in that described LED display control method is implemented in the programming device of the receiving card of described control system.
8. a LED display control program, it is characterised in that including:
Raw display data receiver module, is used for receiving raw display data；
Bright chroma correction coefficient correcting module, for calling bright chroma correction coefficient and bright chroma correction matrix and being calculated new bright chroma correction coefficient from nonvolatile memory；
Display Data correction module, is used for utilizing described new bright chroma correction coefficient to carry out described raw display data showing data after bright chroma is corrected；
Display module；For showing that data are sent to multiple casings of LED display and show after correction；
Wherein, described bright chroma correction coefficient correcting module is specifically for being respectively calculated to obtain described new bright chroma correction coefficient by the bright chroma correction coefficient of each the LED pixel point in the multiple LED pixel points corresponding to described LED display in described bright chroma correction matrix and the described bright chroma correction coefficient called.
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| CN104464633B (en) * | 2014-12-25 | 2017-05-31 | 西安诺瓦电子科技有限公司 | The bearing calibration of LED display unit and means for correcting |
| CN104599636B (en) * | 2015-02-10 | 2017-03-01 | 西安诺瓦电子科技有限公司 | LED display bright chroma bearing calibration and bright chroma correction coefficient generating means |
| CN105355167B (en) * | 2015-11-13 | 2018-04-06 | 西安诺瓦电子科技有限公司 | LED correction coefficient data merging methods |
| CN106531060B (en) * | 2016-11-16 | 2019-02-26 | 西安诺瓦电子科技有限公司 | The bearing calibration of LED display bright chroma and device |
| CN106782429B (en) * | 2016-12-30 | 2019-09-17 | 上海顺久电子科技有限公司 | Eliminate the method and device of screen inhomogeneities |
| CN109658862B (en) * | 2018-12-28 | 2021-11-02 | 卡莱特云科技股份有限公司 | LED box brightness and chrominance correction method and system |
| CN111640391A (en) * | 2019-03-01 | 2020-09-08 | 杭州海康威视数字技术股份有限公司 | Display screen display adjusting method and system |
| CN111145686B (en) * | 2020-02-28 | 2021-08-17 | 厦门天马微电子有限公司 | Pixel driving circuit, display panel and driving method |
| CN113450687A (en) * | 2020-03-24 | 2021-09-28 | 西安诺瓦星云科技股份有限公司 | Color management correction method, device and system |
| CN112543969B (en) * | 2020-07-07 | 2021-10-29 | 北京凯视达科技股份有限公司 | Brightness and chrominance correction method, device and system, storage medium and display |
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