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Light-emitting diode screen color and brightness adjustment method and system

A technology of LED display screen and adjustment method, which is applied to static indicators, instruments, etc., can solve the problems of low calibration efficiency, uneven color and brightness, laboriousness, etc., and achieve the effect of improving adjustment efficiency

Inactive Publication Date: 2011-04-27
GUANGDONG VTRON TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to achieve a better calibration effect, this calibration method needs to be carried out in a dark room or in a low-light environment, which has high requirements for the environment and light collection equipment; at the same time, each module needs to be adjusted individually, which is suitable for the factory. In-house operation cannot be performed at the user's site, and it is difficult to quickly complete one-time adjustment when the display area is large, and the calibration efficiency is low
More importantly, with the passage of time, the attenuation characteristics of the LED components of each module on the display screen are different, the display effect of the display screen is significantly lower than that before leaving the factory, and the phenomenon of uneven color and brightness is intensified. Calibration method, can only remove all the modules of the display screen one by one, return to the factory for readjustment to obtain single-point calibration data, time-consuming, laborious, and difficult to implement

Method used

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  • Light-emitting diode screen color and brightness adjustment method and system
  • Light-emitting diode screen color and brightness adjustment method and system
  • Light-emitting diode screen color and brightness adjustment method and system

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Experimental program
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Effect test

Embodiment 1

[0045] LED display screen color brightness adjustment method of the present invention, as figure 2 shown, including:

[0046] Step 101, sending a monochrome picture to the LED display screen, the monochrome being one of the three primary colors of red, green and blue;

[0047] Step 102, shooting a monochrome picture of the LED display screen, the shooting accuracy of the shooting is to be able to distinguish each pixel on the LED display screen;

[0048] Step 103, acquiring the luminance value and color coordinates of each pixel monochrome display from the captured monochrome image;

[0049] Step 104, performing discrete analysis on the luminance value and color coordinate, and selecting the lowest luminance value and the most remote color coordinate value as initial reference values;

[0050] Step 105, calculating the monochrome compensation amount of each pixel with reference to the initial reference value;

[0051] Step 106, using the above steps to calculate the monoch...

Embodiment 2

[0057] When dividing the white display duration corresponding to the monochrome compensation amount in the monochrome display period, since the division process is actually a measurement process, the result after division may not be accurate. This embodiment adds a test for this situation. step and set the tolerance range, such as image 3 As shown, the complete steps of this embodiment are as follows.

[0058] Step 201, sending a monochrome picture to the LED display screen, the monochrome being one of the three primary colors of red, green and blue;

[0059] Step 202, shooting a monochrome picture of the LED display screen, the shooting accuracy of the shooting is to be able to distinguish each pixel on the LED display screen;

[0060] Step 203, acquiring the luminance value and color coordinates of each pixel monochrome display from the captured monochrome image;

[0061] Step 204, performing discrete analysis on the luminance value and color coordinate, and selecting the...

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Abstract

The invention discloses a light-emitting diode (LED) screen color and brightness adjustment method. White display is added in monochrome display to adjust the color and brightness of each pixel at the same time; as only if the difference between the brightness value and color coordinate of each pixel and the minimum brightness value, and the difference between the brightness value and color coordinate of each pixel and the furthest color coordinate value are known, the time length of the added white display can be calculated; as the demand on the shooting precision is not high, the entire LEDscreen picture can be taken, the demand on the environment is not high during shooting and the method is suitable for field adjustment; and as a tolerance range is set, the adjusted brightness and color coordinate are not required to be completely equal to the minimum brightness value and the furthest color coordinate value and the adjustment efficiency is increased. The invention also discloses a system corresponding to the method, and the method and system provided by the invention can be combined to adjust the color and brightness of the LED screen.

Description

technical field [0001] The invention relates to the technical field of LED display screens, in particular to a method and system for adjusting the color brightness of an LED display screen. Background technique [0002] With the rapid development of LED (Light Emitting Diode) technology, video display screens made of LED are more and more widely used in various public places. Compared with the existing liquid crystal display screen and projection display screen, LED display screen has higher brightness and wider color gamut, which can easily meet the high requirements of outdoor display for brightness and color. However, unlike the centralized lighting methods adopted by LCD screens and projection screens, LED displays rely on individual self-luminous LED components to complete the display of the picture. To a large extent, the performance consistency of LED components determines The display effect is good or bad. [0003] When producing LED displays, usually according to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/00G09G3/32
Inventor 徐响林李军明
Owner GUANGDONG VTRON TECH CO LTD
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