CN104091566A - Display screen bright color degree adjustment method and LED display control method and system - Google Patents
Display screen bright color degree adjustment method and LED display control method and system Download PDFInfo
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- CN104091566A CN104091566A CN201410345471.6A CN201410345471A CN104091566A CN 104091566 A CN104091566 A CN 104091566A CN 201410345471 A CN201410345471 A CN 201410345471A CN 104091566 A CN104091566 A CN 104091566A
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Abstract
The invention relates to a display screen bright color degree adjustment method and an LED display control method and system. The adjustment method is applied to an LED display screen with multiple boxes, the multiple boxes are electrically connected with a control system, and bright color degree correct coefficients of the boxes are stored in the control system. Specifically, the method includes the steps that current local bright color degree of each of the boxes is collected, a public bright color degree value of the boxes is calculated according to the collected current bright color degree information of each box, bright color degree adjustment target values of the boxes are set according to the public bright color degree value, a bright color degree correction matrix of each box is calculated according to the difference between the current bright color degree information of each box and the corresponding bright color degree adjustment target value, and the bright color degree correct matrix of each box is uploaded to the control system. The adjustment method can save a large amount of time, reduces cost and is simple, practical and suitable for bright color degree consistence adjustment of different boxes in lease occasions.
Description
Technical field
The present invention relates to show and proofread and correct and control technology field, be specifically related to a kind of display screen light tone degree control 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 of decorating, due to its have quick for installation, mobility is strong, cheap, the provisional feature such as strong, can meet the demand of many special occasions.LED screen lessor is difficult to only have the casing of same batch of abundant light tone degree, therefore generally the multiple batches of casing of purchasing at times, consists of.When buying casing, casing has generally all passed through the bright chromaticity correction of pointwise, and its box house light tone degree consistance is better.
But, singularity due to lease, the lease screen of different customer requirements varies in size, the casing number that each lease uses is also not quite similar, and in use there is brightness decay and chroma offset in LED, this will cause different casing property of there are differences in brightness decay value, chroma offset amount service time, affects brightness, the colourity consistance of lease screen; The luminance difference of different batches casing, color gamut space difference etc. also will cause full screen image quality decrease.By these service times of different casing, or the lease box body splicing of different batches gets up, and there will be box house homogeneity better and the phenomenon that between casing, light tone degree differs greatly.
Therefore, a kind of simple and practical LED display light tone degree control method is proposed, fast and effeciently to solve that lease exists brightness and/or colourity difference between casing and the conforming problem of whole light tone degree that affects lease screen is one of technology at present urgently to be resolved hurrily.
Summary of the invention
The technological deficiency existing for overcoming prior art, the embodiment of the present invention proposes a kind of display screen light tone degree control method, a kind of LED display control method and a kind of LED display control program.
Particularly, a kind of display screen light tone degree control method that the embodiment of the present invention proposes, be applied to comprise the LED display of a plurality of casings, described a plurality of casings are electrically connected to control system, and in described control system, store the light tone degree correction coefficient of described a plurality of casings.Wherein, described display screen light tone degree control method comprises step: the current bright chrominance information that gathers each body partial of described a plurality of casings; The described current bright chrominance information of each casing that utilization gathers calculates the public bright chromatic value of described a plurality of casings; The light tone degree of setting described a plurality of casings according to described public bright chromatic value regulates desired value; Utilize the described current bright chrominance information of each casing and the light tone degree correction matrix that the difference between described light tone degree adjusting desired value calculates each casing; And the described light tone degree correction matrix of each casing is uploaded to described control system.
In one embodiment of the invention, the current bright chrominance information of each body partial of the described a plurality of casings of above-mentioned collection is to realize by light gun.
In one embodiment of the invention, the above-mentioned light tone degree of setting described a plurality of casings according to described public bright chromatic value regulates the step of desired value to comprise: directly as described light tone degree, regulate the colourity in desired value to regulate desired value the public chromatic value of described a plurality of casings; Or the corresponding cie color coordinate of colour gamut after the setting that common color gamut corresponding to the public chromatic value of described a plurality of casings sacrificed to number percent because of public brightness value is changed accordingly regulates the colourity in desired value to regulate desired value as described light tone degree.
In one embodiment of the invention, the above-mentioned step that the described light tone degree correction matrix of each casing is uploaded to described control system comprises: the light tone degree correction coefficient of the corresponding casing of storing in the described light tone degree correction matrix of each casing and described control system is uploaded to described control system after forming new light tone degree correction coefficient.
In one embodiment of the invention, above-mentioned the light tone degree correction coefficient of the corresponding casing of storing in the described light tone degree correction matrix of each casing and described control system is comprised in conjunction with forming the step that is uploaded to described control system after new light tone degree correction coefficient: by the described light tone degree correction matrix of each casing with described in the light tone degree correction coefficient called the light tone degree correction coefficient of each the LED pixel in a plurality of LED pixels of corresponding described casing calculate respectively to obtain described new light tone degree correction coefficient.
In addition, a kind of LED display control method that the embodiment of the present invention proposes, is applied to comprise a plurality of casings and the LED display system of the control system that is electrically connected to described a plurality of casings.Wherein, described LED display control method comprises step: receive raw display data; Call light tone degree correction coefficient and light tone degree correction matrix and calculate new light tone degree correction coefficient; Utilize described new light tone degree correction coefficient to enter line brightness/chrominance correction to described raw display data and obtain proofreading and correct rear demonstration data; And will after correction, show that data are sent to described a plurality of casing and show.
In one embodiment of the invention, above-mentioned LED display control method is executed in the programming device of the receiving card of described control system.
In one embodiment of the invention, the above-mentioned step of calling light tone degree correction coefficient and light tone degree correction matrix and calculating new light tone degree correction coefficient comprises: by light tone degree correction matrix with described in corresponding to the light tone degree correction coefficient of each the LED pixel in a plurality of LED pixels, calculate respectively to obtain described new light tone degree correction coefficient in the light tone degree correction coefficient called.
In addition, a kind of LED display control program that the embodiment of the present invention proposes, comprising: raw display data receiver module, light tone degree correction coefficient correcting module, demonstration Data correction module and display module.Wherein, raw display data receiver module is with receiving raw display data; Light tone degree correction coefficient correcting module is used for calling light tone degree correction coefficient and correction matrix and calculates new light tone degree correction coefficient; Show that Data correction module is used for utilizing described new light tone degree correction coefficient to enter line brightness/chrominance correction to described raw display data and obtains proofreading and correct rear demonstration data; And display module is for showing after correction that data are sent to LED display and show.
In one embodiment of the invention, above-mentioned light tone degree correction coefficient correcting module comprise for by described light tone degree correction matrix with described in the light tone degree correction coefficient called corresponding to the light tone degree correction coefficient of each the LED pixel in a plurality of LED pixels of described LED display, calculate respectively to obtain described new light tone degree correction coefficient.
As from the foregoing, the display screen light tone degree control method that the embodiment of the present invention proposes, without staff at the scene all LED lamps of each casing of Resurvey light chrominance information and calculate new light tone degree correction coefficient, only need the current bright chrominance information that gathers each body partial just can calculate simply light tone degree correction matrix, utilize this light tone degree correction matrix to come corresponding original light tone degree correction coefficient to revise, thereby can reach the object that solves light tone degree difference between casing.The method can save the plenty of time, light tone degree consistance cost-saving, simple and practical, that be applicable to lease the different casings of occasion regulates.
By the detailed description below with reference to accompanying drawing, it is obvious that other side of the present invention and feature become.But it should be known that the only object design for explaining of this accompanying drawing, rather than as the restriction of scope of the present invention, this is because it should be with reference to additional claim.Should also be appreciated that, unless otherwise noted, the unnecessary accompanying drawing of drawing to scale, they only try hard to illustrate conceptually structure described herein and flow process.
Accompanying drawing explanation
Fig. 1 is the steps flow chart schematic diagram of a kind of display screen light tone degree 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.
Embodiment
For above-mentioned purpose of the present invention, feature and advantage can be become apparent more, below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail.
Refer to Fig. 1, it is the steps flow chart schematic diagram of a kind of display screen light tone degree control method of embodiment of the present invention proposition.The display screen light tone degree control method of the present embodiment is suitable for being applied in the LED display that comprises a plurality of casings, and described a plurality of casings are electrically connected to control system, and in described control system, stores the light tone degree correction coefficient of described a plurality of casings.Wherein, LED display is for example monochromatic LED display screen, dual-colored LED display screen or full-color LED display screen; Single casing is the LED lamp plate of a LED lamp plate or a plurality of cascades for example; Single led lamp plate drives chip and a plurality of LED pixel by comprising LED, and single led pixel comprises color LED chip/LED lamp or a plurality of color LED chip/LED lamp.The LED lamp plate that control system is mainly used in video source signal to carry out delivering to after Data Format Transform, gray scale layout and bright chromaticity correction in each LED casing of LED display shows, it for example comprises sending card and receiving card, even some LED display can be by sending card Function Integration Mechanism to receiving card, but the present invention is not as limit.
Hold above-mentionedly, the display screen light tone degree control method of the present embodiment mainly comprises step S11 to S19 as shown in Figure 1, specific as follows:
Step S11: gather the bright chrominance information of each body partial of a plurality of casings in LED display, this acquisition operations can realize by light gun, can certainly carry out with other light tone degree collecting devices.
Step S13: the current bright chrominance information of each body partial that utilization gathers calculates the public bright chromatic value of a plurality of casings.In the present embodiment, the computing method of public bright chromatic value are as follows: (1) can be the various same color LED monochrome information data in the current bright chrominance information of a plurality of casings are minimized respectively for the calculating of public brightness value, and using these minimum value respectively as the public brightness value of the various same color LED of described a plurality of casings, or for example, after these minimum value are suitably adjusted certain percentage (raise 0～20% or lower certain percentage) respectively as the public brightness value of the various same color LED of described a plurality of casings.(2) for the calculating of public chromatic value, can be according to the chrominance information data in the current bright chrominance information of a plurality of casings and draw respectively the colour gamut that it is corresponding, obtain again the common color gamut (being also a plurality of leg-of-mutton public triangle in CIE colour gamut coordinate diagram) of these colour gamuts, and CIE coordinate corresponding to this common color gamut is the public chromatic value of described a plurality of casings.So far, the public brightness value of described a plurality of casings and public chromatic value form the public bright chromatic value of described a plurality of casings.
Step S15: the light tone degree of setting described a plurality of casings according to the public bright chromatic value of described a plurality of casings regulates desired value.In the present embodiment, for how according to described public bright chromatic value set described a plurality of casings light tone degree regulate desired value, can adopt following two kinds of situations (a) and (b): (a) the public bright chromatic value of described a plurality of casings is directly regulated to desired value as described light tone degree; (b) set a brightness and sacrifice number percent, also sacrifice the certain percentage of public brightness value; The setting of sacrificing number percent corresponding to this brightness, public chromatic value also can be done corresponding variation; Suppose that the colour gamut that public chromatic value is corresponding is CG1, when setting brightness sacrifice number percent, be 8% (being also that public brightness value sacrifices 8%), the scope that colour gamut CG2 and colour gamut CG2 are positioned at colour gamut CG1 is changed in the mutually deserved meeting of colour gamut CG1, and the corresponding cie color coordinate of colour gamut CG2 after changing is revised public chromatic value; The light tone degree of revised public brightness value and the described a plurality of casings of public chromatic value formation can be regulated to desired value afterwards.
Step S17: utilize the described current bright chrominance information of each casing and the light tone degree correction matrix that the difference between described light tone degree adjusting desired value calculates each casing.For example, for the casing of full-color LED display screen, its single led pixel generally includes R, G, and B three-color LED (the LED lamp of LED chip or encapsulation), the light tone degree correction coefficient of single led pixel is generally 3 * 3 matrixes; Therefore in the present embodiment, take full-color LED display screen as example, the light tone degree correction matrix of the single casing calculating is also for example 3 * 3 matrixes, for the light tone degree correction coefficient of each the LED pixel in this casing, revises respectively.
Step S19: the described light tone degree correction matrix of each casing is uploaded to described control system.In the present embodiment, can adopt following two kinds of modes: (1) is directly uploaded to control system by the light tone degree correction matrix of each casing; (2) the light tone degree correction matrix of each casing is uploaded to control system with the light tone degree correction coefficient of the corresponding casing of storing in control system again in conjunction with after calculating new light tone degree correction coefficient, for example, replaces the light tone degree correction coefficient of previously stored corresponding casing.In addition, for mode (2), it specifically can be the light tone degree correction coefficient of each LED pixel of the light tone degree correction matrix of this casing and this casing is carried out respectively to corrected Calculation to obtain the revised new light tone degree correction coefficient of single led pixel, and the set of the revised new light tone degree correction coefficient of each LED pixel is the new light tone degree correction coefficient of this casing.Afterwards, control system just can be utilized light tone degree correction matrix in conjunction with the light tone degree correction coefficient of storage or directly utilize new light tone degree correction coefficient to enter line brightness/chrominance to the raw display data receiving and proofread and correct, and improves whereby the show uniformity of a plurality of casings in LED display.
Refer to Fig. 2, the steps flow chart schematic diagram of its a kind of LED display control method that is the embodiment of the present invention.The LED display control method of the present embodiment is suitable for being applied in the LED display system of the control system that comprises a plurality of casings and be electrically connected to described a plurality of casings.Particularly, this LED display control method is for example carried out at the programming device of the receiving card of control system for example in FPGA, but the present invention is not as limit.The LED display control method of the present embodiment for example comprises the step S21 to S27 shown in Fig. 2.
Step S21: receive raw display data.
Step S23: call light tone degree correction coefficient and light tone degree correction matrix and calculate new light tone degree correction coefficient; Light tone degree correction coefficient and light tone degree correction matrix are for example stored in the nonvolatile memory in control system herein, and the method for calculating new light tone degree correction coefficient can be: the light tone degree correction coefficient of each the LED pixel in light tone degree correction matrix and a plurality of LED pixel is calculated respectively to obtain new light tone degree correction coefficient.In the present embodiment, the corresponding light tone degree correction matrix of each casing for example, and different casings can have identical or different light tone degree correction matrixs.
Step S25: utilize described new light tone degree correction coefficient to enter line brightness/chrominance correction to described raw display data and obtain proofreading and correct rear demonstration data.
Step S27: will show after correction that data are sent to described a plurality of casing and show.In the present embodiment, show that data finally can be sent on the LED lamp plate of corresponding casing to show after proofreading and correct, so LED display can reach preferably whole light tone degree consistance.
Refer to Fig. 3, the steps flow chart schematic diagram of its a kind of LED display control program that is the embodiment of the present invention.The LED display control program of the present embodiment is for example realized by the slave computer software being provided with in control system, and the slave computer software for example specifically can be on the receiving card being installed in control system is realized.
As shown in Figure 3, the LED display control program 30 of the present embodiment comprises raw display data receiver module 31, light tone degree correction coefficient correcting module 33, shows Data correction module 35 and display module 35.Wherein, raw display data receiver module is with receiving raw display data; Light tone degree correction coefficient correcting module is used for calling light tone degree correction coefficient and correction matrix and calculates new light tone degree correction coefficient; Show that Data correction module is used for utilizing described new light tone degree correction coefficient to enter line brightness/chrominance correction to described raw display data and obtains proofreading and correct rear demonstration data; And display module is for showing after correction that data are sent to LED display and show.It is worth mentioning that, the method for calculating new light tone degree correction coefficient can be: the light tone degree correction coefficient of each the LED pixel in light tone degree correction matrix and a plurality of LED pixel is calculated respectively to obtain new light tone degree correction coefficient.
In sum, the display screen light tone degree control method of the embodiment of the present invention, without staff at the scene all LED lamps of each casing of Resurvey light chrominance information and calculate new light tone degree correction coefficient, only need the current bright chrominance information that gathers each body partial just can calculate simply light tone degree correction matrix, utilize this light tone degree correction matrix to come corresponding original light tone degree correction coefficient to revise, thereby can reach the object that solves light tone degree difference between casing.The method can save the plenty of time, light tone degree consistance cost-saving, simple and practical, that be applicable to lease the different casings of occasion regulates.
Applied specific case herein principle and the embodiment of display screen light tone degree control method of the present invention, LED display control method and LED display control program are set forth, the explanation of above embodiment is just for helping to understand method of the present invention and core concept thereof; Meanwhile, for one of ordinary skill in the art, according to thought of the present invention; all will change in specific embodiments and applications; in sum, this description should not be construed as limitation of the present invention, and protection scope of the present invention should be as the criterion with appended claim.
Claims (10)
1. a LED light tone degree control method, is applied to comprise the LED display of a plurality of casings, and described a plurality of casings are electrically connected to control system, and in described control system, store the light tone degree correction coefficient of described a plurality of casings; It is characterized in that, described LED display light tone degree control method comprises step:
Gather the current bright chrominance information of each body partial of described a plurality of casings;
The described current bright chrominance information of each casing that utilization gathers calculates the public bright chromatic value of described a plurality of casings;
The light tone degree of setting described a plurality of casings according to described public bright chromatic value regulates desired value;
Utilize the described current bright chrominance information of each casing and the light tone degree correction matrix that the difference between described light tone degree adjusting desired value calculates each casing; And
The described light tone degree correction matrix of each casing is uploaded to described control system.
2. display screen light tone degree control method as claimed in claim 1, is characterized in that, the current bright chrominance information that gathers each body partial of described a plurality of casings is to realize by light gun.
3. the display screen light tone degree control method as described in right 1, is characterized in that, the light tone degree of setting described a plurality of casings according to described public bright chromatic value regulates the step of desired value to comprise:
Directly as described light tone degree, regulate the colourity in desired value to regulate desired value the public chromatic value of described a plurality of casings; Or
The corresponding cie color coordinate of colour gamut after the setting that common color gamut corresponding to the public chromatic value of described a plurality of casings sacrificed to number percent because of public brightness value is changed accordingly regulates the colourity in desired value to regulate desired value as described light tone degree.
4. LED display light tone degree control method as claimed in claim 1, is characterized in that, the step that the described light tone degree correction matrix of each casing is uploaded to described control system comprises:
The light tone degree correction coefficient of the corresponding casing of storing in the described light tone degree correction matrix of each casing and described control system is uploaded to described control system after forming new light tone degree correction coefficient.
5. LED display light tone degree control method as claimed in claim 4, it is characterized in that, described the light tone degree correction coefficient of the corresponding casing of storing in the described light tone degree correction matrix of each casing and described control system is comprised in conjunction with forming the step that is uploaded to described control system after new light tone degree correction coefficient:
By the described light tone degree correction matrix of each casing with described in the light tone degree correction coefficient called the light tone degree correction coefficient of each the LED pixel in a plurality of LED pixels of corresponding described casing calculate respectively to obtain described new light tone degree correction coefficient.
6. a LED display control method, is applied to comprise a plurality of casings and the LED display system of the control system that is electrically connected to described a plurality of casings, it is characterized in that, comprises step:
Receive raw display data;
Call light tone degree correction coefficient and light tone degree correction matrix and calculate new light tone degree correction coefficient;
Utilize described new light tone degree correction coefficient to enter line brightness/chrominance correction to described raw display data and obtain proofreading and correct rear demonstration data; And
To after correction, show that data are sent to described a plurality of casing and show.
7. LED display control method as claimed in claim 6, is characterized in that, described LED display control method is executed in the programming device of the receiving card of described control system.
8. LED display control method as claimed in claim 6, is characterized in that, described in the step calling light tone degree correction coefficient and light tone degree correction matrix and calculate new light tone degree correction coefficient comprise:
By light tone degree correction matrix with described in corresponding to the light tone degree correction coefficient of each the LED pixel in a plurality of LED pixels, calculate respectively to obtain described new light tone degree correction coefficient in the light tone degree correction coefficient called.
9. a LED display control program, is characterized in that, comprising:
Raw display data receiver module, for receiving raw display data;
Light tone degree correction coefficient correcting module, for calling light tone degree correction coefficient and correction matrix and calculating new light tone degree correction coefficient;
Show Data correction module, for utilizing described new light tone degree correction coefficient to enter line brightness/chrominance correction to described raw display data, obtain proofreading and correct rear demonstration data;
Display module; For demonstration data after proofreading and correct being sent to a plurality of casings of LED display, show.
10. LED display control program as claimed in claim 9, it is characterized in that, described light tone degree correction coefficient correcting module comprise for by described light tone degree correction matrix with described in the light tone degree correction coefficient called corresponding to the light tone degree correction coefficient of each the LED pixel in a plurality of LED pixels of described LED display, calculate respectively to obtain described new light tone degree correction coefficient.
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| CN109658862A (en) * | 2018-12-28 | 2019-04-19 | 卡莱特（深圳）云科技有限公司 | A kind of LED box bright chroma bearing calibration and correction system |
| 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 |
| CN111145686A (en) * | 2020-02-28 | 2020-05-12 | 厦门天马微电子有限公司 | Pixel driving circuit, display panel and driving method |
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| CN112543969A (en) * | 2020-07-07 | 2021-03-23 | 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 |
| 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 |
| CN112542132A (en) * | 2020-11-17 | 2021-03-23 | 长春希达电子技术有限公司 | LED display screen single-box correction optical parameter consistency correction method |
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