CN103489411B - The color of display screen maintains method and system - Google Patents
The color of display screen maintains method and system Download PDFInfo
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- CN103489411B CN103489411B CN201310439938.9A CN201310439938A CN103489411B CN 103489411 B CN103489411 B CN 103489411B CN 201310439938 A CN201310439938 A CN 201310439938A CN 103489411 B CN103489411 B CN 103489411B
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Abstract
The color that the invention discloses a kind of display screen maintains method and system, and the method comprising the steps of: the current tristimulus values obtaining the various monochrome of display unit; More often kind of monochromatic current tristimulus values and benchmark tristimulus values respectively, and according to the current value of comparative result adjustment with often kind of monochromatic corresponding primitive colours LED lamp of current tristimulus values.The color of display screen of the present invention maintains method and system, by adjusting the electric current of the primitive colours LED lamp corresponding with the current tristimulus values of various monochrome, the current tristimulus values of each monochrome is adjusted to reference value, often kind of monochrome of display unit can be made to be maintained at datum-plane, to obtain better color and keep effect.
Description
Technical field
The present invention relates to technical field of LED display, the color particularly relating to a kind of display screen maintains method and system.
Background technology
Along with the development of visual information alternating-current technique, the range of application of display screen is also more and more extensive, and the requirement of user to its display effect is also more and more higher, requires that its display effect can keep for a long time.The display effect of display screen directly depends on rear-projection ray machine, and the display effect of rear-projection ray machine determines primarily of adopted light source.The LED possessing the advantages such as environmental protection, color saturation is high, long service life, volume are little is at present the light source be most widely used in rear-projection ray machine, and therefore, the display effect of display screen finally depends on brightness as the LED of rear-projection ray machine light source and colourity.
But, in rear-projection ray machine operational process, as LED inevitably brightness decay, the color-coordinate shift of light source, and also can change along with the display parameter such as brightness and colourity of the change LED of environment temperature, above-mentioned factor makes rear-projection ray machine cannot continue to maintain Benchmark brightness value and chromaticity coordinates, and finally causes the display brightness of display screen and color and Benchmark brightness and color is inconsistent, display effect is deteriorated.
Summary of the invention
Based on this, be necessary to there is brightness decay, color-coordinate shift for the above-mentioned LED as rear-projection ray machine light source, cause the problem that the display brightness of display screen and color and Benchmark brightness and color are inconsistent, provide a kind of color of display screen to maintain method and system.
A kind of color maintenance method of display screen, comprises the following steps:
Obtain the current tristimulus values of the various monochrome of display unit;
More often kind of monochromatic current tristimulus values and benchmark tristimulus values respectively, and according to the current value of comparative result adjustment with often kind of monochromatic corresponding primitive colours LED lamp of current tristimulus values.
The color of display screen maintains a system, comprising:
Acquisition module, for obtaining the current tristimulus values of the various monochrome of display unit;
Adjusting module, for more often kind of monochromatic current tristimulus values and benchmark tristimulus values respectively, and according to the current value of comparative result adjustment with often kind of monochromatic corresponding primitive colours LED lamp of current tristimulus values.
The color of above-described display screen maintains method and system, by adjusting the electric current of the primitive colours LED lamp corresponding with the current tristimulus values of various monochrome, the current tristimulus values of each monochrome is adjusted to reference value, often kind of monochrome of display unit can be made to be maintained at datum-plane, to obtain better color and keep effect.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of color maintenance method first embodiment of display screen of the present invention;
Fig. 2 is the schematic flow sheet of color maintenance method second embodiment of display screen of the present invention;
Fig. 3 is the structural representation of color maintenance system first embodiment of display screen of the present invention.
Embodiment
Refer to Fig. 1, Fig. 1 is the schematic flow sheet of color maintenance method first embodiment of display screen of the present invention.
The color maintenance method of the described display screen of present embodiment comprises the following steps:
Step 101, obtains the current tristimulus values of the various monochrome of display unit.
Step 102, respectively more often kind of monochromatic current tristimulus values and benchmark tristimulus values, and according to the current value of comparative result adjustment with often kind of monochromatic corresponding primitive colours LED lamp of current tristimulus values.
The color maintenance method of the display screen described in present embodiment, by adjusting the electric current of the primitive colours LED lamp corresponding with the current tristimulus values of various monochrome, the current tristimulus values of each monochrome is adjusted to reference value, often kind of monochrome of display unit can be made to be maintained at datum-plane, to obtain better color and keep effect.
Wherein, for step 101, described display unit comprises the predeterminable area etc. of rear-projection ray machine, display screen, and described display screen is preferably mosaic display screen.Described monochrome is any one in W (white), R (red), G (green), B (blue), Y (yellow), C (cyan) and this seven look of M (magenta).
Preferably, directly can gather the current tristimulus values of the various monochrome of display unit, also first can obtain present intensity value and the current color coordinate of the various monochrome of display unit, be then the current tristimulus values of various monochrome by the present intensity value of the various monochromes obtained and current color coordinate conversion.
In a specific embodiment, the step of the current tristimulus values of the various monochrome of described acquisition display unit comprises the following steps:
The present intensity value of the various monochromes of Real-time Obtaining rear-projection ray machine and current color coordinate, and the current tristimulus values by the present intensity value of various monochromes obtained and current color coordinate conversion being various monochrome, wherein, described rear-projection ray machine is described display unit.Or,
Cycle obtains present intensity value and the current color coordinate of various monochrome in display screen current display frame, and is the current tristimulus values of various monochrome by the present intensity value of the various monochromes obtained and current color coordinate conversion.
In the present embodiment, comprise present intensity value and described current color coordinate described in color watch-dog, the corresponding module acquires driving collecting circuit board and software by one, can the present intensity value of Obtaining Accurate display unit and current color coordinate.
Above-mentioned module is by obtaining present intensity value and current color coordinate with under type: in the inner lighting system or imaging optical path of rear-projection ray machine, one, obtain rear-projection ray machine present intensity value and current color coordinate; Two, in the external circuits of rear-projection ray machine and display screen, obtain present intensity value and the current color coordinate of rear-projection ray machine; Three, before display screen, obtain present intensity value and the current color coordinate of various monochrome in display screen current picture.
Further, according to display unit and obtain manner, the cycle obtaining and adjust display screen color can be preset.If obtained by first two mode, the normal operation of display screen can not be affected, can the color of Real-time Obtaining brightness value and chromaticity coordinates and adjustment display screen in real time, realize the real-time maintenance of display effect.If by the third mode, in order to not affect normal operation and the display of display screen, by the length of periodically setting a bit, at set intervals external device can only be positioned over display screen advance line parameter and obtain and color adjustment.
In other embodiments of the present invention, those skilled in the art also can according to actual needs, adopt other conventional techniques means of this area to carry out parameter acquiring and color adjustment pointedly.The present intensity value of various monochromes and the cycle of current color coordinate that obtain display unit can set according to actual conditions, the time needed arbitrarily can be set as, can be ten minutes, one hour, half a day or weekly, can set according to the requirement of display effect.Cycle is shorter, and color keeps effect relatively better.
In another embodiment, before the step of current tristimulus values performing the various monochrome of described acquisition display unit, further comprising the steps of:
Obtain Benchmark brightness value and the reference color coordinates of various monochrome, and the Benchmark brightness value of the various monochromes obtained and reference color coordinates are converted to the benchmark tristimulus values of various monochrome.
For step 102, preferably, often kind of monochromatic benchmark tristimulus values is the initial tristimulus values of each monochrome, after the first installation of display screen, calibration, calibrate according to it and pass through the display effect after checking and accepting, preserve often kind of monochromatic initial luma values and initial color coordinates, and the initial luma values electric charge initial color coordinates of preservation be converted to the initial tristimulus values of each monochrome, follow-up color keep can this value as benchmark.In actual motion, also can reset the benchmark tristimulus values of various monochrome according to actual conditions.
Preferably, three kinds of (R look LED, G look LED and B look LED) one_to_one corresponding in the primitive colours LED lamp of current tristimulus values and display unit.
In one embodiment, described more often kind of monochromatic current tristimulus values and benchmark tristimulus values respectively, and comprise the following steps according to the step of the current value of comparative result adjustment primitive colours LED lamp corresponding to described current tristimulus values:
Step 1021, calculates the difference of each values and corresponding values in often kind of monochromatic benchmark tristimulus values in often kind of monochromatic current tristimulus values respectively.
Step 1022, often calculates a kind of described difference of a values of monochrome, judges the numerical range residing for described difference.
Step 1023, with the current value of the step by step modulating corresponding with the described numerical range LED corresponding with described values, wherein, three kinds of different LED in the corresponding primitive colours LED lamp of current tristimulus values.
For step 1022 and step 1023, preferably, the stepping of the current value of adjustment different LED lamp can be different, and can reduce adjustment number of times like this, raising is regulated the speed.Red LED lamp may correspond to the values of X dimension, and green LED lamp may correspond to the values of Y dimension, and blue led lamp may correspond to the values of Z dimension.
In other embodiments, except the above-mentioned mode adjusted with the current value of stepping to LED, those skilled in the art can also pass through other usual modes of this area, the current value of the primitive colours LED lamp corresponding with tristimulus values is adjusted according to comparative result, to accelerate regulate the speed or reduce adjustment number of times, and then the color consistent required time is adjusted in minimizing, reduces system loss.Usual other modes in this area comprise slope adjustment, cumulative adjustment etc.The current value variable quantity that during slope adjustment, the variable quantity of tristimulus values is corresponding needed for the mathematic interpolation of present current value and neighbouring current value, to determine the LED electrical flow valuve be adjusted to needed for benchmark tristimulus values.
In another embodiment, described more often kind of monochromatic current tristimulus values and benchmark tristimulus values respectively, and further comprising the steps of with the step of the current value of often kind of monochromatic current tristimulus values corresponding primitive colours LED lamp according to comparative result adjustment:
Judge whether often kind of monochromatic current tristimulus values is in threshold range respectively, if, then stop the current value of the adjustment primitive colours LED lamp corresponding with described current tristimulus values, if not, then continue more often kind of monochromatic current tristimulus values respectively and often kind of monochromatic benchmark tristimulus values.
Refer to Fig. 2, Fig. 2 is the schematic flow sheet of color maintenance method second embodiment of display screen of the present invention.
The color maintenance method of display screen described in present embodiment is with the key distinction of the first embodiment: described more often kind of monochromatic current tristimulus values and benchmark tristimulus values respectively, and can specifically comprise the following steps according to the step of the current value of comparative result adjustment primitive colours LED lamp corresponding to described current tristimulus values:
Step 201, judges whether each values in often kind of monochromatic current tristimulus values is greater than 1 with the ratio of corresponding values in often kind of monochromatic benchmark tristimulus values respectively.
Step 202, if be greater than 1, reduces the current value of the primitive colours LED lamp corresponding with described values with default stepping, wherein, and three kinds of different LED in three values correspondence primitive colours LED lamps in described current tristimulus values.
Step 203, if be less than 1, judge whether the present current value of the primitive colours LED lamp corresponding with described values is less than the maximum current value of described LED, if be less than, the current value of the primitive colours LED lamp corresponding with described values is increased with default stepping, otherwise, using the maximum current value of the present current value of described LED as described LED.
The color maintenance method of the display screen described in present embodiment, when adjusting the electric current of corresponding LED, the maximum current value of the LED that can adjust in real time, and then the display effect improving display screen.
Wherein, for step 202 and step 203, default stepping can be 1 current value unit, also can be other values.
Further, after step 203, described more often kind of monochromatic current tristimulus values respectively and often kind of monochromatic benchmark tristimulus values, and further comprising the steps of with the step of the current value of described current tristimulus values corresponding primitive colours LED lamp according to comparative result adjustment:
Step 204, add up and reduce the downward number of times of the current value of the primitive colours LED lamp corresponding with described values with default stepping and increase the rise number of times of current value of the primitive colours LED lamp corresponding with described values with default stepping, if described downward number of times and described rise number of times are all greater than 5 times, then the current value of the primitive colours LED lamp stopping adjustment corresponding with described values.
Aforesaid operations step, after the current value repeatedly adjusting LED, when current tristimulus values does not meet pre-conditioned, then adjust number of times meet be greater than preset times 5 time, automatically exit set-up procedure, can effectively stop invalid adjustment process, to reduce system loss.
Refer to Fig. 3, Fig. 3 is the structural representation of color maintenance system first embodiment of display screen of the present invention.
The color of the described display screen of present embodiment maintains system and comprises acquisition module 100 and adjusting module 200, wherein:
Acquisition module 100, for obtaining the current tristimulus values of the various monochrome of display unit.
Adjusting module 200, for more often kind of monochromatic current tristimulus values and benchmark tristimulus values respectively, and according to the current value of comparative result adjustment with often kind of monochromatic corresponding primitive colours LED lamp of current tristimulus values.
The color of the display screen described in present embodiment maintains system, by adjusting the electric current of the primitive colours LED lamp corresponding with the current tristimulus values of various monochrome, the current tristimulus values of each monochrome is adjusted to reference value, often kind of monochrome of display unit can be made to be maintained at datum-plane, to obtain better color and keep effect.
Wherein, for acquisition module 100, described display unit comprises the predeterminable area etc. of rear-projection ray machine, display screen, and described display screen is preferably mosaic display screen.Described monochrome is any one in W (white), R (red), G (green), B (blue), Y (yellow), C (cyan) and this seven look of M (magenta).
Preferably, acquisition module 100 directly can gather the current tristimulus values of the various monochrome of display unit, also first can obtain present intensity value and the current color coordinate of the various monochrome of display unit, be then the current tristimulus values of various monochrome by the present intensity value of the various monochromes obtained and current color coordinate conversion.
In a specific embodiment, acquisition module 100 can be used for:
The present intensity value of the various monochromes of Real-time Obtaining rear-projection ray machine and current color coordinate, and the current tristimulus values by the present intensity value of various monochromes obtained and current color coordinate conversion being various monochrome, wherein, described rear-projection ray machine is described display unit.Or,
Cycle obtains present intensity value and the current color coordinate of various monochrome in display screen current display frame, and is the current tristimulus values of various monochrome by the present intensity value of the various monochromes obtained and current color coordinate conversion.
In the present embodiment, acquisition module 100 can comprise color watch-dog, corresponding driving collecting circuit board and software, can gather described present intensity value and described current color coordinate, with the present intensity value of Obtaining Accurate display unit and current color coordinate.
Above-mentioned acquisition module 100 is by obtaining present intensity value and current color coordinate with under type: in the inner lighting system or imaging optical path of rear-projection ray machine, one, obtain rear-projection ray machine present intensity value and current color coordinate; Two, in the external circuits of rear-projection ray machine and display screen, obtain present intensity value and the current color coordinate of rear-projection ray machine; Three, before display screen, obtain present intensity value and the current color coordinate of various monochrome in display screen current picture.
Further, according to display unit and obtain manner, the cycle obtaining and adjust display screen color can be preset.If obtained by first two mode, the normal operation of display screen can not be affected, can the color of Real-time Obtaining brightness value and chromaticity coordinates and adjustment display screen in real time, realize the real-time maintenance of display effect.If by the third mode, in order to not affect normal operation and the display of display screen, by the length of periodically setting a bit, at set intervals external device can only be positioned over display screen advance line parameter and obtain and color adjustment.
In other embodiments of the present invention, those skilled in the art also can according to actual needs, adopt other conventional techniques means of this area to carry out parameter acquiring and color adjustment pointedly.The present intensity value of various monochromes and the cycle of current color coordinate that obtain display unit can set according to actual conditions, the time needed arbitrarily can be set as, can be ten minutes, one hour, half a day or weekly, can set according to the requirement of display effect.Cycle is shorter, and color keeps effect relatively better.
In another embodiment, acquisition module 100 is before the current tristimulus values obtaining the various monochrome of display unit, also can be used for the Benchmark brightness value and the reference color coordinates that obtain various monochrome, and the Benchmark brightness value of the various monochromes obtained and reference color coordinates are converted to the benchmark tristimulus values of various monochrome.
For adjusting module 200, preferably, often kind of monochromatic benchmark tristimulus values is the initial tristimulus values of each monochrome, after the first installation of display screen, calibration, calibrate according to it and pass through the display effect after checking and accepting, preserve often kind of monochromatic initial luma values and initial color coordinates, and the initial luma values electric charge initial color coordinates of preservation be converted to the initial tristimulus values of each monochrome, follow-up color keep can this value as benchmark.In actual motion, also can reset the benchmark tristimulus values of various monochrome according to actual conditions.
Preferably, three kinds of (R look LED, G look LED and B look LED) one_to_one corresponding in the primitive colours LED lamp of current tristimulus values and display unit.
In one embodiment, adjusting module 200 also for:
Calculate the difference of each values and corresponding values in often kind of monochromatic benchmark tristimulus values in often kind of monochromatic current tristimulus values respectively.
Often calculate a kind of described difference of a values of monochrome, judge the numerical range residing for described difference.
With the current value of the step by step modulating corresponding with the described numerical range LED corresponding with described values, wherein, three kinds of different LED in the corresponding primitive colours LED lamp of current tristimulus values.
For adjusting module 200, preferably, the stepping of the current value of adjustment different LED lamp can be different, and can reduce adjustment number of times like this, raising is regulated the speed.Red LED lamp may correspond to the values of X dimension, and green LED lamp may correspond to the values of Y dimension, and blue led lamp may correspond to the values of Z dimension.
In other embodiments, except the above-mentioned mode adjusted with the current value of stepping to LED, those skilled in the art can also pass through other usual modes of this area, the current value of the primitive colours LED lamp corresponding with tristimulus values is adjusted according to comparative result, to accelerate regulate the speed or reduce adjustment number of times, and then the color consistent required time is adjusted in minimizing, reduces system loss.Usual other modes in this area comprise slope adjustment, cumulative adjustment etc.The current value variable quantity that during slope adjustment, the variable quantity of tristimulus values is corresponding needed for the mathematic interpolation of present current value and neighbouring current value, to determine the LED electrical flow valuve be adjusted to needed for benchmark tristimulus values.
In another embodiment, described adjusting module 200 also can be used for judging respectively whether often kind of monochromatic current tristimulus values is in threshold range, if, the current value of the primitive colours LED lamp then stopping adjustment corresponding with described current tristimulus values, if not, then more often kind of monochromatic current tristimulus values respectively and often kind of monochromatic benchmark tristimulus values is continued.
The following stated is that the color of display screen of the present invention maintains system second embodiment.
The color maintenance system of display screen described in present embodiment and the key distinction of the first embodiment are: adjusting module 200 also can be further used for:
Judge whether each values in often kind of monochromatic current tristimulus values is greater than 1 with the ratio of corresponding values in often kind of monochromatic benchmark tristimulus values respectively.
If be greater than 1, reduce the current value of the primitive colours LED lamp corresponding with described values with default stepping, wherein, three kinds of different LED in three values correspondence primitive colours LED lamps in described current tristimulus values.
If be less than 1, judge whether the present current value of the primitive colours LED lamp corresponding with described values is less than the maximum current value of described LED, if be less than, the current value of the primitive colours LED lamp corresponding with described values is increased with default stepping, otherwise, using the maximum current value of the present current value of described LED as described LED.
The color of the display screen described in present embodiment maintains system, when adjusting the electric current of corresponding LED, and the maximum current value of the LED that can adjust in real time, and then the display effect improving display screen.
Wherein, for adjusting module 200, default stepping can be 1 current value unit, also can be other values.
Further, adjusting module 200 also can be used for adding up and reduces the downward number of times of the current value of the primitive colours LED lamp corresponding with described values with default stepping and increase the rise number of times of current value of the primitive colours LED lamp corresponding with described values with default stepping, if described downward number of times and described rise number of times are all greater than 5 times, then the current value of the primitive colours LED lamp stopping adjustment corresponding with described values.
Aforesaid operations, after the current value repeatedly adjusting LED, when current tristimulus values does not meet pre-conditioned, then adjust number of times meet be greater than preset times 5 time, automatically exit set-up procedure, can effectively stop invalid adjustment process, to reduce system loss.
The above embodiment only have expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (8)
1. the color maintenance method of a display screen, is characterized in that, comprise the following steps:
Obtain the current tristimulus values of the various monochrome of display unit;
More often kind of monochromatic current tristimulus values and benchmark tristimulus values respectively, and according to the current value of comparative result adjustment with often kind of monochromatic corresponding primitive colours LED lamp of current tristimulus values;
Described more often kind of monochromatic current tristimulus values and benchmark tristimulus values respectively, and comprise the following steps according to the step of the current value of comparative result adjustment primitive colours LED lamp corresponding to described current tristimulus values:
Judge whether each values in often kind of monochromatic current tristimulus values is greater than 1 with the ratio of corresponding values in often kind of monochromatic benchmark tristimulus values respectively;
If be greater than 1, reduce the current value of the primitive colours LED lamp corresponding with described values with default stepping, wherein, three kinds of different LED in three values correspondence primitive colours LED lamps in described current tristimulus values;
If be less than 1, judge whether the present current value of the primitive colours LED lamp corresponding with described values is less than the maximum current value of described LED, if be less than, the current value of the primitive colours LED lamp corresponding with described values is increased with default stepping, otherwise, using the maximum current value of the present current value of described LED as described LED.
2. the color maintenance method of display screen according to claim 1, is characterized in that, the step of the current tristimulus values of the various monochrome of described acquisition display unit comprises the following steps:
The present intensity value of the various monochromes of Real-time Obtaining rear-projection ray machine and current color coordinate, and the current tristimulus values by the present intensity value of various monochromes obtained and current color coordinate conversion being various monochrome, wherein, described rear-projection ray machine is described display unit.
3. the color maintenance method of display screen according to claim 1, is characterized in that, the step of the current tristimulus values of the various monochrome of described acquisition display unit comprises the following steps:
Cycle obtains present intensity value and the current color coordinate of various monochrome in display screen current display frame, and is the current tristimulus values of various monochrome by the present intensity value of the various monochromes obtained and current color coordinate conversion.
4. the color maintenance method of display screen according to claim 1, is characterized in that, before the step of current tristimulus values performing the various monochrome of described acquisition display unit, further comprising the steps of:
Obtain Benchmark brightness value and the reference color coordinates of various monochrome, and the Benchmark brightness value of the various monochromes obtained and reference color coordinates are converted to the benchmark tristimulus values of various monochrome.
5. the color maintenance method of display screen as claimed in any of claims 1 to 4, it is characterized in that, described more often kind of monochromatic current tristimulus values respectively and often kind of monochromatic benchmark tristimulus values, and further comprising the steps of with the step of the current value of described current tristimulus values corresponding primitive colours LED lamp according to comparative result adjustment:
Add up and reduce the downward number of times of the current value of the primitive colours LED lamp corresponding with described values with default stepping and increase the rise number of times of current value of the primitive colours LED lamp corresponding with described values with default stepping, if described downward number of times and described rise number of times are all greater than 5 times, then the current value of the primitive colours LED lamp stopping adjustment corresponding with described values.
6. the color of display screen maintains a system, it is characterized in that, comprising:
Acquisition module, for obtaining the current tristimulus values of the various monochrome of display unit;
Adjusting module, for more often kind of monochromatic current tristimulus values and benchmark tristimulus values respectively, and according to the current value of comparative result adjustment with often kind of monochromatic corresponding primitive colours LED lamp of current tristimulus values;
Described adjusting module also for:
Judge whether each values in often kind of monochromatic current tristimulus values is greater than 1 with the ratio of corresponding values in often kind of monochromatic benchmark tristimulus values respectively;
If be greater than 1, reduce the current value of the primitive colours LED lamp corresponding with described values with default stepping, wherein, three kinds of different LED in three values correspondence primitive colours LED lamps in described current tristimulus values;
If be less than 1, judge whether the present current value of the primitive colours LED lamp corresponding with described values is less than the maximum current value of described LED, if be less than, the current value of the primitive colours LED lamp corresponding with described values is increased with default stepping, otherwise, using the maximum current value of the present current value of described LED as described LED.
7. the color of display screen according to claim 6 maintains system, it is characterized in that, described acquisition module is also for present intensity value and the current color coordinate of the various monochromes of Real-time Obtaining rear-projection ray machine, and be the current tristimulus values of various monochrome by the present intensity value of various monochromes obtained and current color coordinate conversion, wherein, described rear-projection ray machine is described display unit.
8. the color of display screen according to claim 6 maintains system, it is characterized in that, described acquisition module also obtains present intensity value and the current color coordinate of various monochrome in the current display frame of display screen for the cycle, and be the current tristimulus values of various monochrome by the present intensity value of various monochromes obtained and current color coordinate conversion, wherein, described display screen is described display unit.
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| CN106782347B (en) * | 2016-12-30 | 2018-12-18 | 南昌黑鲨科技有限公司 | Correct the method and device of LED backlight display white point |
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| CN108417175B (en) * | 2018-02-24 | 2019-09-13 | 深圳市晶台股份有限公司 | A kind of LED display realizes the display methods of adjustable colour gamut |
| CN115424577B (en) * | 2022-11-03 | 2023-01-13 | 永林电子股份有限公司 | LED uniform light emitting control method and system based on full-color intelligent controller |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1460393A (en) * | 2001-03-29 | 2003-12-03 | 皇家菲利浦电子有限公司 | System for RGB based LED luminary |
| CN1668157A (en) * | 2004-03-11 | 2005-09-14 | 安捷伦科技公司 | Method and apparatus for controlling an LED based light system |
| CN101217840A (en) * | 2007-12-29 | 2008-07-09 | 友达光电股份有限公司 | Color controlling method of LED light source system |
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