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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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 invention relates to the technical field of LED display, in particular to a color maintenance method and system of a display screen.
Background
With the development of visual information communication technology, the application range of the display screen is wider and wider, the requirement of a user on the display effect is higher and higher, and the display effect can be maintained for a long time. The display effect of the display screen is directly determined by the rear projection light machine, and the display effect of the rear projection light machine is mainly determined by the adopted light source. At present, an LED having the advantages of environmental protection, high color saturation, long service life, small size and the like is the most widely applied light source in a rear projection optical machine, and therefore, the display effect of a display screen finally depends on the brightness and chromaticity of the LED serving as the light source of the rear projection optical machine.
However, in the operation process of the rear projection optical machine, the LEDs as the light source inevitably have brightness attenuation and chromaticity drift, and the display parameters such as the brightness and chromaticity of the LEDs also change with the change of the ambient temperature, so that the rear projection optical machine cannot continuously maintain the reference brightness value and the color coordinate, and finally the display brightness and the color of the display screen are inconsistent with the reference brightness and the color, and the display effect is deteriorated.
Disclosure of Invention
Therefore, it is necessary to provide a color maintaining method and system for a display screen to solve the problem that the display brightness and color of the display screen are inconsistent with the reference brightness and color due to the brightness attenuation and chromaticity shift of the LED as the light source of the rear projection light engine.
A color maintenance method of a display screen comprises the following steps:
acquiring current tristimulus values of various single colors of a display unit;
and respectively comparing the current tristimulus values of each single color with the reference tristimulus values, and adjusting the current value of the three-primary-color LED lamp corresponding to the current tristimulus values of each single color according to the comparison result.
A color maintenance system for a display screen, comprising:
the acquisition module is used for acquiring the current tristimulus values of various single colors of the display unit;
and the adjusting module is used for respectively comparing the current tristimulus values of each single color with the reference tristimulus values and adjusting the current values of the three-primary-color LED lamps corresponding to the current tristimulus values of each single color according to the comparison result.
According to the color maintaining method and system of the display screen, the current of the three-primary-color LED lamp corresponding to the current tri-stimulus values of various single colors is adjusted to the reference value, so that each single color of the display unit can be maintained at the reference level, and a better color maintaining effect is obtained.
Drawings
FIG. 1 is a flowchart illustrating a color maintenance method for a display panel according to a first embodiment of the present invention;
FIG. 2 is a flowchart illustrating a color maintenance method for a display panel according to a second embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a color maintenance system of a display panel according to a first embodiment of the present invention.
Detailed Description
Referring to fig. 1, fig. 1 is a schematic flow chart illustrating a color maintenance method for a display panel according to a first embodiment of the present invention.
The color maintaining method of the display screen of the present embodiment includes the steps of:
step 101, obtaining current tristimulus values of various single colors of a display unit.
And 102, respectively comparing the current tristimulus values of each single color with the reference tristimulus values, and adjusting the current values of the three-primary-color LED lamps corresponding to the current tristimulus values of each single color according to the comparison result.
In the color maintenance method of the display screen according to this embodiment, the current of the three-primary-color LED lamp corresponding to the current tristimulus values of the respective single colors is adjusted to the reference value, so that each single color of the display unit can be maintained at the reference level, and a better color maintenance effect can be obtained.
In step 101, the display unit includes a rear projection optical machine, a preset area of a display screen, and the like, and the display screen is preferably a tiled display screen. The single color is any one of seven colors of W (white), R (red), G (green), B (blue), Y (yellow), C (cell) and M (magenta).
Preferably, the current tristimulus values of the various single colors of the display unit can be directly acquired, or the current brightness values and the current color coordinates of the various single colors of the display unit can be firstly acquired, and then the acquired current brightness values and the current color coordinates of the various single colors are converted into the current tristimulus values of the various single colors.
In a specific embodiment, the step of obtaining the current tristimulus values of the various single colors of the display unit comprises the following steps:
the method comprises the steps of acquiring current brightness values and current color coordinates of various single colors of a rear projection optical machine in real time, and converting the acquired current brightness values and current color coordinates of the various single colors into current tristimulus values of the various single colors, wherein the rear projection optical machine is the display unit. Or,
and periodically acquiring current brightness values and current color coordinates of various single colors in a current display picture of the display screen, and converting the acquired current brightness values and current color coordinates of various single colors into current tristimulus values of various single colors.
In this embodiment, the current luminance value and the current color coordinate may be acquired by a module including a color monitoring device, a corresponding driving acquisition circuit board, and software, so that the current luminance value and the current color coordinate of the display unit may be accurately acquired.
The module may obtain the current luminance value and the current color coordinate by: acquiring a current brightness value and a current color coordinate of a rear projection optical machine in an internal illumination system or an imaging light path of the rear projection optical machine; secondly, acquiring a current brightness value and a current color coordinate of the rear projection optical machine in an external light path of the rear projection optical machine and the display screen; and thirdly, acquiring the current brightness value and the current color coordinate of each single color in the current picture of the display screen in front of the display screen.
Further, the period for acquiring and adjusting the color of the display screen can be preset according to the display unit and the acquisition mode. If the brightness value and the color coordinate are obtained through the first two modes, the normal operation of the display screen cannot be influenced, the brightness value and the color coordinate can be obtained in real time, the color of the display screen can be adjusted in real time, and the real-time maintenance of the display effect is realized. If the third mode is adopted, in order to not affect the normal operation and display of the display screen, the external device can be placed on the display screen at intervals for parameter acquisition and color adjustment only a little longer than the set period.
In other embodiments of the present invention, a person skilled in the art can also perform parameter acquisition and color adjustment according to actual needs by using other technical means commonly used in the art. The period for acquiring the current brightness value and the current color coordinate of each single color of the display unit can be set according to actual conditions, can be set to any required time, can be ten minutes, one hour, half a day or every week, and can be set according to the requirement of display effect. The shorter the period, the better the color retention.
In another embodiment, before the step of obtaining the current tristimulus values of the various single colors of the display unit, the method further comprises the following steps:
and acquiring reference brightness values and reference color coordinates of various single colors, and converting the acquired reference brightness values and reference color coordinates of various single colors into reference tristimulus values of various single colors.
For step 102, preferably, the reference tristimulus value of each single color is the initial tristimulus value of each single color, after the initial installation of the display screen is completed and the calibration is completed, the initial brightness value and the initial color coordinate of each single color are stored according to the display effect after the calibration and the acceptance of the display screen, the stored initial brightness value charge initial color coordinate is converted into the initial tristimulus value of each single color, and the subsequent color is kept to be the reference of the value. In actual operation, the reference tristimulus values of various single colors can be reset according to actual conditions.
Preferably, the current tristimulus values correspond one-to-one to three of the three primary color LED lamps (R color LED lamp, G color LED lamp, and B color LED lamp) of the display unit.
In one embodiment, the step of comparing the current tristimulus value of each single color with the reference tristimulus value, respectively, and adjusting the current value of the three primary color LED lamp corresponding to the current tristimulus value according to the comparison result comprises the steps of:
and step 1021, calculating the difference value between each stimulus value in the current tri-stimulus value of each single color and the corresponding stimulus value in the reference tri-stimulus value of each single color.
Step 1022, each time the difference value of one stimulus value of one single color is calculated, the numerical range in which the difference value is located is determined.
And 1023, adjusting the current value of the LED lamp corresponding to the stimulus value in a stepping mode corresponding to the numerical range, wherein the current tristimulus value corresponds to three different LED lamps in the three primary color LED lamps.
For step 1022 and step 1023, the current values of different LED lamps are preferably adjusted in different steps, so that the adjustment times can be reduced and the adjustment speed can be increased. The red LED lamp can correspond to the stimulus value of the X dimension, the green LED lamp can correspond to the stimulus value of the Y dimension, and the blue LED lamp can correspond to the stimulus value of the Z dimension.
In other embodiments, in addition to the above-mentioned manner of adjusting the current value of the LED lamp in a stepping manner, a person skilled in the art may adjust the current value of the three primary color LED lamp corresponding to the tristimulus value according to the comparison result in other manners commonly used in the art, so as to increase the adjustment speed or reduce the adjustment times, thereby reducing the time required for adjusting to be consistent in color and reducing the system loss. Other means customary in the art include slope adjustment, accumulation adjustment, and the like. And during slope adjustment, calculating the current value variation corresponding to the variation of the required tristimulus value according to the difference value between the current value and the nearby current value so as to determine the LED current value required by adjustment to the reference tristimulus value.
In another embodiment, the step of comparing the current tristimulus value of each single color with the reference tristimulus value, respectively, and adjusting the current value of the three primary color LED lamp corresponding to the current tristimulus value of each single color according to the comparison result further comprises the steps of:
and respectively judging whether the current tristimulus values of each single color are within a threshold range, if so, stopping adjusting the current values of the three-primary-color LED lamps corresponding to the current tristimulus values, and if not, continuously and respectively comparing the current tristimulus values of each single color with the reference tristimulus values of each single color.
Referring to fig. 2, fig. 2 is a flowchart illustrating a color maintenance method for a display panel according to a second embodiment of the present invention.
The main differences between the color maintenance method of the display screen according to the present embodiment and the first embodiment are: the step of comparing the current tristimulus value of each single color with the reference tristimulus value respectively and adjusting the current value of the three primary color LED lamp corresponding to the current tristimulus value according to the comparison result may specifically include the steps of:
step 201, respectively judging whether the ratio of each stimulus value in the current tri-stimulus value of each single color to the corresponding stimulus value in the reference tri-stimulus value of each single color is greater than 1.
And 202, if the current value is larger than 1, reducing the current value of the three-primary-color LED lamp corresponding to the stimulus value in a preset step, wherein three stimulus values in the current three stimulus values correspond to three different LED lamps in the three-primary-color LED lamp.
And 203, if the current value of the three-primary-color LED lamp corresponding to the stimulus value is smaller than 1, judging whether the current value of the three-primary-color LED lamp corresponding to the stimulus value is smaller than the maximum current value of the LED lamp, if so, increasing the current value of the three-primary-color LED lamp corresponding to the stimulus value in preset steps, otherwise, taking the current value of the LED lamp as the maximum current value of the LED lamp.
According to the color maintaining method of the display screen, when the current of the corresponding LED lamp is adjusted, the maximum current value of the LED lamp can be adjusted in real time, and the display effect of the display screen is further improved.
For step 202 and step 203, the preset step may be 1 current value unit, or may be other values.
Further, after step 203, the step of comparing the current tristimulus value of each single color with the reference tristimulus value of each single color, respectively, and adjusting the current value of the three primary color LED lamp corresponding to the current tristimulus value according to the comparison result further comprises the steps of:
and 204, counting down times of reducing the current value of the three-primary-color LED lamp corresponding to the stimulus value in preset steps and up times of increasing the current value of the three-primary-color LED lamp corresponding to the stimulus value in preset steps, and stopping adjusting the current value of the three-primary-color LED lamp corresponding to the stimulus value if the down times and the up times are both more than 5 times.
In the operation steps, after the current value of the LED lamp is adjusted for multiple times, when the current tristimulus value does not meet the preset condition, the adjustment step is automatically quitted when the adjustment times are more than 5, and the invalid adjustment process can be effectively terminated to reduce the system loss.
Referring to fig. 3, fig. 3 is a schematic structural diagram of a color maintenance system of a display panel according to a first embodiment of the present invention.
The color maintenance system of the display screen of the present embodiment includes an acquisition module 100 and an adjustment module 200, wherein:
the acquisition module 100 is configured to acquire current tristimulus values of various single colors of the display unit.
And the adjusting module 200 is configured to compare the current tristimulus value of each single color with the reference tristimulus value, and adjust the current value of the three-primary-color LED lamp corresponding to the current tristimulus value of each single color according to the comparison result.
In the color maintenance system of the display panel according to this embodiment, the current of the three-primary-color LED lamp corresponding to the current tristimulus values of the respective single colors is adjusted to the reference value, so that each single color of the display unit can be maintained at the reference level, and a better color maintenance effect can be obtained.
For the acquisition module 100, the display unit includes a rear projection optical machine, a preset area of a display screen, and the like, and the display screen is preferably a tiled display screen. The single color is any one of seven colors of W (white), R (red), G (green), B (blue), Y (yellow), C (cell) and M (magenta).
Preferably, the acquisition module 100 may directly acquire current tristimulus values of various single colors of the display unit, or may first acquire current luminance values and current color coordinates of various single colors of the display unit, and then convert the acquired current luminance values and current color coordinates of various single colors into current tristimulus values of various single colors.
In one particular embodiment, the acquisition module 100 may be configured to:
the method comprises the steps of acquiring current brightness values and current color coordinates of various single colors of a rear projection optical machine in real time, and converting the acquired current brightness values and current color coordinates of the various single colors into current tristimulus values of the various single colors, wherein the rear projection optical machine is the display unit. Or,
and periodically acquiring current brightness values and current color coordinates of various single colors in a current display picture of the display screen, and converting the acquired current brightness values and current color coordinates of various single colors into current tristimulus values of various single colors.
In this embodiment, the collection module 100 may include a color monitoring device, a corresponding driving collection circuit board, and software, and may collect the current brightness value and the current color coordinate to accurately obtain the current brightness value and the current color coordinate of the display unit.
The acquisition module 100 may acquire the current luminance value and the current color coordinate by the following methods: acquiring a current brightness value and a current color coordinate of a rear projection optical machine in an internal illumination system or an imaging light path of the rear projection optical machine; secondly, acquiring a current brightness value and a current color coordinate of the rear projection optical machine in an external light path of the rear projection optical machine and the display screen; and thirdly, acquiring the current brightness value and the current color coordinate of each single color in the current picture of the display screen in front of the display screen.
Further, the period for acquiring and adjusting the color of the display screen can be preset according to the display unit and the acquisition mode. If the brightness value and the color coordinate are obtained through the first two modes, the normal operation of the display screen cannot be influenced, the brightness value and the color coordinate can be obtained in real time, the color of the display screen can be adjusted in real time, and the real-time maintenance of the display effect is realized. If the third mode is adopted, in order to not affect the normal operation and display of the display screen, the external device can be placed on the display screen at intervals for parameter acquisition and color adjustment only a little longer than the set period.
In other embodiments of the present invention, a person skilled in the art can also perform parameter acquisition and color adjustment according to actual needs by using other technical means commonly used in the art. The period for acquiring the current brightness value and the current color coordinate of each single color of the display unit can be set according to actual conditions, can be set to any required time, can be ten minutes, one hour, half a day or every week, and can be set according to the requirement of display effect. The shorter the period, the better the color retention.
In another embodiment, the acquiring module 100 may be further configured to acquire reference luminance values and reference color coordinates of the respective single colors before acquiring current tristimulus values of the respective single colors of the display unit, and convert the acquired reference luminance values and reference color coordinates of the respective single colors into reference tristimulus values of the respective single colors.
For the adjusting module 200, it is preferable that each monochrome reference tristimulus value is an initial tristimulus value of each monochrome, after the initial installation of the display screen is completed and the calibration is completed, the initial brightness value and the initial color coordinate of each monochrome are stored according to the display effect after the calibration and the acceptance of the display screen, the stored initial brightness value charge initial color coordinate is converted into the initial tristimulus value of each monochrome, and the subsequent color is kept as the reference. In actual operation, the reference tristimulus values of various single colors can be reset according to actual conditions.
Preferably, the current tristimulus values correspond one-to-one to three of the three primary color LED lamps (R color LED lamp, G color LED lamp, and B color LED lamp) of the display unit.
In one embodiment, the adjustment module 200 is further configured to:
and respectively calculating the difference value of each stimulus value in the current tri-stimulus value of each single color and the corresponding stimulus value in the reference tri-stimulus value of each single color.
And judging the numerical range of the difference value of each calculated single-color stimulus value.
And adjusting the current value of the LED lamp corresponding to the stimulus value in a stepping way corresponding to the numerical range, wherein the current tristimulus value corresponds to three different LED lamps in the three primary colors of LED lamps.
For the adjusting module 200, preferably, the steps for adjusting the current values of different LED lamps may be different, so that the adjusting times can be reduced and the adjusting speed can be increased. The red LED lamp can correspond to the stimulus value of the X dimension, the green LED lamp can correspond to the stimulus value of the Y dimension, and the blue LED lamp can correspond to the stimulus value of the Z dimension.
In other embodiments, in addition to the above-mentioned manner of adjusting the current value of the LED lamp in a stepping manner, a person skilled in the art may adjust the current value of the three primary color LED lamp corresponding to the tristimulus value according to the comparison result in other manners commonly used in the art, so as to increase the adjustment speed or reduce the adjustment times, thereby reducing the time required for adjusting to be consistent in color and reducing the system loss. Other means customary in the art include slope adjustment, accumulation adjustment, and the like. And during slope adjustment, calculating the current value variation corresponding to the variation of the required tristimulus value according to the difference value between the current value and the nearby current value so as to determine the LED current value required by adjustment to the reference tristimulus value.
In another embodiment, the adjusting module 200 may be further configured to respectively determine whether the current tristimulus value of each single color is within a threshold range, if so, stop adjusting the current value of the three-primary-color LED lamp corresponding to the current tristimulus value, and if not, continue to respectively compare the current tristimulus value of each single color with the reference tristimulus value of each single color.
The following is a second embodiment of the color maintenance system for a display panel of the present invention.
The main differences between the color maintenance system of the display panel according to the present embodiment and the first embodiment are: the adjustment module 200 may be further operable to:
and respectively judging whether the ratio of each stimulus value in the current tri-stimulus value of each single color to the corresponding stimulus value in the reference tri-stimulus value of each single color is more than 1.
And if the current value is larger than 1, reducing the current value of the three-primary-color LED lamp corresponding to the stimulus value in a preset step, wherein three stimulus values in the current three stimulus values correspond to three different LED lamps in the three-primary-color LED lamp.
If the current value of the three-primary-color LED lamp corresponding to the stimulus value is smaller than 1, judging whether the current value of the three-primary-color LED lamp corresponding to the stimulus value is smaller than the maximum current value of the LED lamp, if so, increasing the current value of the three-primary-color LED lamp corresponding to the stimulus value in preset steps, otherwise, taking the current value of the LED lamp as the maximum current value of the LED lamp.
The color maintenance system of the display screen according to the embodiment can adjust the maximum current value of the LED lamp in real time when adjusting the current of the corresponding LED lamp, thereby improving the display effect of the display screen.
For the adjusting module 200, the preset step may be 1 current value unit, or may be other values.
Further, the adjusting module 200 may be further configured to count down times of decreasing the current value of the three primary color LED lamp corresponding to the stimulus value by a preset step and up times of increasing the current value of the three primary color LED lamp corresponding to the stimulus value by a preset step, and stop adjusting the current value of the three primary color LED lamp corresponding to the stimulus value if both the down times and the up times are greater than 5 times.
In the operation, after the current value of the LED lamp is adjusted for multiple times, when the current tristimulus value does not meet the preset condition, the adjusting step is automatically quitted when the adjusting times are more than 5, and the invalid adjusting process can be effectively terminated to reduce the system loss.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (8)
1. A color maintenance method of a display screen is characterized by comprising the following steps:
acquiring current tristimulus values of various single colors of a display unit;
respectively comparing the current tristimulus values of each single color with a reference tristimulus value, and adjusting the current value of the three-primary-color LED lamp corresponding to the current tristimulus values of each single color according to the comparison result;
the step of respectively comparing the current tristimulus value of each single color with the reference tristimulus value and adjusting the current value of the three-primary-color LED lamp corresponding to the current tristimulus value according to the comparison result comprises the following steps:
respectively judging whether the ratio of each stimulus value in the current tri-stimulus value of each single color to the corresponding stimulus value in the reference tri-stimulus value of each single color is more than 1;
if the current value is larger than 1, reducing the current value of the three-primary-color LED lamp corresponding to the stimulus value in a preset step mode, wherein three stimulus values in the current three stimulus values correspond to three different LED lamps in the three-primary-color LED lamp;
if the current value of the three-primary-color LED lamp corresponding to the stimulus value is smaller than 1, judging whether the current value of the three-primary-color LED lamp corresponding to the stimulus value is smaller than the maximum current value of the LED lamp, if so, increasing the current value of the three-primary-color LED lamp corresponding to the stimulus value in preset steps, otherwise, taking the current value of the LED lamp as the maximum current value of the LED lamp.
2. The method for maintaining color of display screen according to claim 1, wherein the step of obtaining the current tristimulus values of various single colors of the display unit comprises the steps of:
the method comprises the steps of acquiring current brightness values and current color coordinates of various single colors of a rear projection optical machine in real time, and converting the acquired current brightness values and current color coordinates of the various single colors into current tristimulus values of the various single colors, wherein the rear projection optical machine is the display unit.
3. The method for maintaining color of display screen according to claim 1, wherein the step of obtaining the current tristimulus values of various single colors of the display unit comprises the steps of:
and periodically acquiring current brightness values and current color coordinates of various single colors in a current display picture of the display screen, and converting the acquired current brightness values and current color coordinates of various single colors into current tristimulus values of various single colors.
4. The method for maintaining color of display screen according to claim 1, wherein before the step of obtaining current tristimulus values of various single colors of the display unit, further comprising the steps of:
and acquiring reference brightness values and reference color coordinates of various single colors, and converting the acquired reference brightness values and reference color coordinates of various single colors into reference tristimulus values of various single colors.
5. The color maintenance method of a display panel according to any one of claims 1 to 4, wherein the step of comparing the current tristimulus value of each single color with the reference tristimulus value of each single color, respectively, and adjusting the current value of the three primary color LED lamp corresponding to the current tristimulus value according to the comparison result further comprises the steps of:
and counting down times of reducing the current value of the three-primary-color LED lamp corresponding to the stimulus value in preset steps and up times of increasing the current value of the three-primary-color LED lamp corresponding to the stimulus value in preset steps, and stopping adjusting the current value of the three-primary-color LED lamp corresponding to the stimulus value if the down times and the up times are both more than 5 times.
6. A color maintenance system for a display screen, comprising:
the acquisition module is used for acquiring the current tristimulus values of various single colors of the display unit;
the adjusting module is used for respectively comparing the current tristimulus values of each single color with the reference tristimulus values and adjusting the current values of the three-primary-color LED lamps corresponding to the current tristimulus values of each single color according to the comparison result;
the adjustment module is further configured to:
respectively judging whether the ratio of each stimulus value in the current tri-stimulus value of each single color to the corresponding stimulus value in the reference tri-stimulus value of each single color is more than 1;
if the current value is larger than 1, reducing the current value of the three-primary-color LED lamp corresponding to the stimulus value in a preset step mode, wherein three stimulus values in the current three stimulus values correspond to three different LED lamps in the three-primary-color LED lamp;
if the current value of the three-primary-color LED lamp corresponding to the stimulus value is smaller than 1, judging whether the current value of the three-primary-color LED lamp corresponding to the stimulus value is smaller than the maximum current value of the LED lamp, if so, increasing the current value of the three-primary-color LED lamp corresponding to the stimulus value in preset steps, otherwise, taking the current value of the LED lamp as the maximum current value of the LED lamp.
7. The color maintenance system of claim 6, wherein the collection module is further configured to obtain a current brightness value and a current color coordinate of each single color of the rear projection light engine in real time, and convert the obtained current brightness value and the obtained current color coordinate of each single color into a current tristimulus value of each single color, wherein the rear projection light engine is the display unit.
8. The color maintenance system of claim 6, wherein the capture module is further configured to periodically obtain current luminance values and current color coordinates of each single color in a current display image of the display screen, and convert the obtained current luminance values and current color coordinates of each single color into current tristimulus values of each single color, wherein the display screen is the display unit.
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| CN105336286A (en) * | 2014-07-29 | 2016-02-17 | 杭州海康威视数字技术股份有限公司 | Spliced screen color adjusting method and device |
| CN104330942A (en) * | 2014-10-30 | 2015-02-04 | 广东威创视讯科技股份有限公司 | Color keeping method and system of laser optical machine |
| 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 |
| CN107945730A (en) * | 2017-11-22 | 2018-04-20 | 田国辉 | A kind of control method of the LED standard screen based on two-level current |
| 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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| JP4887930B2 (en) * | 2006-06-23 | 2012-02-29 | セイコーエプソン株式会社 | Display device and clock |
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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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