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LED display white balance adjustment system

A technology of LED display and adjustment system, applied in static indicators, instruments, etc., can solve the problem of low white balance adjustment efficiency, and achieve the effects of high accuracy, improved accuracy and high reliability

Inactive Publication Date: 2015-10-28
苏州南光电子科技有限公司
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AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide a white balance adjustment system for LED display screens, which solves the problem of low white balance adjustment efficiency in the prior art

Method used

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specific Embodiment

[0033] The system adjusts the white balance of an outdoor P20 full-color LED display. Each pixel of the LED display includes a red light, a green light, and a blue light. The white balance adjustment method includes the following steps:

[0034] Step 1. Obtain the brightness parameters of the red light, green light and blue light of the LED display. The brightness of the red light is 900mcd, the brightness of the green light is 1800mcd, the brightness of the blue light is 300mcd, the wavelength of the red light is 625nm, and the wavelength of the green light is 525nm The wavelength of the blue light is 470nm; the maximum brightness of each pixel is 3000mcd, and one square meter contains 2500 pixels, so the maximum brightness of the entire screen is 7500cd;

[0035] Step 2. According to the preset brightness parameters of the entire screen, the preset maximum brightness of the entire screen cannot be greater than 7500cd. Generally, 80% of the maximum brightness is used as the se...

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Abstract

The invention discloses an LED display white balance adjustment system which comprises a controller, an image processing device, a luminance chrominance parameter acquisition device, an adjustable resistor and a current detection device. The adjustable resistor and the current detection device are sequentially connected in series with a constant current pin of an LED display drive chip. The control end of the adjustable resistor is connected with the controller. The image processing device, the luminance chrominance parameter acquisition device and the current detection device are connected with the controller. The controller adjusts an adjustable resistance value according to the luminance chrominance information of an LED display and the current value of the constant current pin of the drive chip, and adjusts the white balance parameter of the LED display in real time. By acquiring the luminance chrominance of the LED display and the current value of the constant current pin of the drive chip, the system automatically adjusts the white balance of the display. The work efficiency and the white balance accuracy are effectively improved.

Description

technical field [0001] The invention belongs to the application field of electronic products, and in particular relates to an LED display screen white balance adjustment system. Background technique [0002] The white balance effect is one of the most important indicators of the display. In terms of color science, when the ratio of the three primary colors of red, green and blue is 1:4.6:0.16, pure white will be displayed. If there is a slight deviation in the actual ratio, there will be a deviation in white balance. Generally, it is necessary to pay attention to whether the white is blue or yellowish. green phenomenon. The quality of the white balance is mainly determined by the control system of the display screen, and the die also affects the reproduction of the color. [0003] In the brightness adjustment of the LED display, if the ratio of the three primary colors of red, green and blue is 1:4.6:0.16, the forward current deviation will be too large, resulting in serio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/32
Inventor 陈国玉
Owner 苏州南光电子科技有限公司
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