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System and method for detecting uniformity of pixels of display screen

A detection method and detection system technology, which can be applied in the direction of measuring electricity, measuring devices, measuring electrical variables, etc., and can solve problems such as slow processing speed.

Inactive Publication Date: 2010-02-24
深圳市乐雅科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method needs to analyze all the pixels of the entire photo, so the processing speed is slow, and due to the existence of factors such as noise in the photo, certain analysis errors are prone to occur

Method used

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  • System and method for detecting uniformity of pixels of display screen
  • System and method for detecting uniformity of pixels of display screen
  • System and method for detecting uniformity of pixels of display screen

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] refer to image 3 with Figure 4 , the present invention provides a method for detecting the uniformity of display screen pixels. In the figure, an LED display screen 306 with a resolution of 6×8, that is, the display screen has 6 rows and 8 columns of light points; and it is necessary to ensure that the The LED lights at the four terminals of the display screen 306 work normally, and then the photo information of the display screen is stored to the storage module 103 through the communication interface 101 . The resolution of the display screen and the reference threshold are input through the user input interface 102 , and the resolution is 6×8 and the reference threshold is 55 and stored in the storage module 103 .

[0037] It should be noted that the reference threshold can be adjusted according to actual conditions.

[0038] The scanning module 104 reads the reference threshold value and the display screen photo information in the storage module 103, from the upp...

Embodiment 2

[0045] refer to image 3 with Figure 4 As shown, the difference from Embodiment 1 is that the analysis module 105 reads the resolution information 6×8 and the coordinate values ​​of the pixel point 301, the pixel point 302, the pixel point 303 and the pixel point 304 in the storage module 103, according to The following calculation formula calculates the row center distance R1 and the column center distance R2 of the display screen and stores them in the memory module;

[0046] The row center distance R1=(coordinate of lower right end point-coordinate of lower left end point) / (number of display screen columns-1)=(8.5-1.1) / (8-1)=1.06;

[0047] The row center distance R2=(row coordinate of upper left end point−row coordinate of lower left end point) / (row number of display screen−1)=(8.8-3.8) / (6-1)=1.

[0048] In this embodiment, the scanning module 104 reads the column center distance R1, the row center distance R2 and the reference threshold in the storage module 103, from ...

Embodiment 3

[0050] refer to image 3 with Figure 4 As shown, the difference from Embodiment 1 is that the row center distance R1 and the column center distance R2 of the display screen are calculated according to the following calculation formula and stored in the storage module;

[0051] The column center distance R1=[(coordinates of the upper right endpoint column-coordinates of the upper left endpoint) / (number of display columns-1)+(coordinates of the lower right endpoint-coordinates of the lower left endpoint) / (number of columns of the display panel-1) ] / 2=1.045;

[0052] Described line center distance R2=[(row coordinate of upper right end point-row coordinate of lower right end point) / (row number of display screen-1)+(row coordinate of upper left end point-row coordinate of lower left end point) / (row number of display screen-1) ] / 2=1.02.

[0053] In this embodiment, the scanning module 104 reads the center distance and the reference threshold in the storage module in the storage...

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Abstract

The invention discloses a method and a system for detecting the uniformity of pixels of a display screen. The method processes display screen photos by calculating the center distance between light points of the display screen and performing skipping according to the center distance. The system comprises a communication interface, a user input interface, a storage module, a scanning module and ananalysis module. The method and the system can detect the uniformity and dead pixels of the pixels of the display screen, and accelerate the detection speed and the detection accuracy rate.

Description

technical field [0001] The invention belongs to the technical field of photo image processing, and in particular relates to a detection system and a detection method for the uniformity of pixel points of a display screen. Background technique [0002] At present, LED display screens are widely used in our lives. LED display screens are composed of multiple light-emitting diodes (LEDs). Due to the limitations of the existing production process of light-emitting diode LEDs, the performance parameters of light-emitting diode LED products have a large dispersion. The discrete nature of the parameters of the light-emitting diode LEDs leads to large differences in the brightness of each light-emitting diode LED under the same control conditions. It will make the human eye feel that the entire LED display is uneven in brightness and darkness. The most common is that some parts of the LED display appear to have black spots, which seem to be "dirty". In fact, this is all caused by ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/32G01R31/00
Inventor 管丽邵寅亮张波
Owner 深圳市乐雅科技有限公司
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