Unlock instant, AI-driven research and patent intelligence for your innovation.

LED screen single-point brightness correction method and system

A brightness correction, LED screen technology, applied in static indicators, instruments, etc., can solve the problem of difficult LED screen splicing, and achieve the effect of improving image quality, uniform distribution, and uniform brightness distribution

Active Publication Date: 2021-08-10
HUNAN GUOTIAN ELECTRONICS TECH CO LTD
View PDF10 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the brightness of a single LED screen is adjusted so that each pixel is the same, and then the LEDs of the same brightness are spliced ​​together, the splicing line can be eliminated, but in this way, the brightness of the screen must be exactly the same, so that there will be no splicing line. In industrial production, it is difficult to splice LED screens with exactly the same brightness and mass-produce them.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • LED screen single-point brightness correction method and system
  • LED screen single-point brightness correction method and system
  • LED screen single-point brightness correction method and system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] The single-point calibration work starts after the display unit is assembled. The brightness of each LED is measured by light-sensitive camera equipment, and the pixel with the darkest brightness value in the entire system is designated as the basic LED point. All other pixels are compared with it and changed. The input current can change the brightness and achieve the same brightness of the whole screen at the same time.

[0048] The LED screen single-point brightness correction method disclosed in this embodiment includes the following steps:

[0049] Measure the brightness of all pixels in the LED display screen to be corrected to obtain the first brightness matrix;

[0050] find the lowest luminance in the first luminance matrix;

[0051] Adjust the input current of each LED lamp so that the brightness of all pixels in the LED display screen is the same as the lowest brightness in the first brightness matrix, and write the adjusted current value into the EPROM of t...

Embodiment 2

[0058] like Figure 7 As shown, this embodiment provides a single-point brightness correction method for LED screens, which is used to eliminate the gradient stitching line formed by the brightness jump between small LED screens when splicing small LED screens into a large LED screen, and make the Brightness values ​​are balanced throughout the large LED screen. The method includes the following steps:

[0059] S10: Measure the brightness of all pixels in the LED display screen to be corrected to obtain a first brightness matrix;

[0060] Measure the brightness of each LED in the LED display screen to be corrected in a dark environment; form the brightness of each LED into a first brightness matrix;

[0061] S20: Divide a plurality of regions in the first brightness matrix, calculate the average brightness value in each region, and use the average brightness value as the brightness value of each point in the region to obtain a second brightness matrix;

[0062] The method f...

Embodiment 3

[0091] like Figure 8 As shown, the present embodiment provides a single-point brightness correction system for LED screens, including a point-by-point correction module for LED displays, a control computer for LED displays, and an LED display control module on the control computer; the point-by-point correction module for LED displays includes a point-by-point correction module for LED displays. Point correction control unit and high-definition imaging unit; the high-precision imaging unit measures the brightness value of the LED light on the LED display screen in a dark environment, and the point-by-point correction control unit reads the measurement result of the brightness value, and executes embodiment 1 or 2 The brightness correction method of the LED screen. The LED display control module on the control computer executes the control commands of the point-by-point correction control unit, adjusts the input current value of each LED lamp, and then adjusts the brightness o...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses an LED screen single-point brightness correction method and system, and the method comprises the following steps: measuring the brightness of all pixels in a to-be-corrected LED display screen, and obtaining a first brightness matrix; finding out the lowest brightness in the first brightness matrix; and adjusting the input current of each LED lamp to enable the pixel brightness to be the same as the lowest brightness in the first brightness matrix, and writing the adjusted current value into an EPROM (Electrically Programmable Read Only Memory) of the LED display screen. According to the invention, the consistency of the brightness and the chromaticity of the whole screen is ensured, the image quality is improved to a higher grade, and when the LED small screens are spliced into the large screen, no gradient line exists at the splicing position; and after regional averaging and smooth processing, the brightness distribution is ensured to meet the standard deviation requirement, the brightness difference of the LED screens of the same level is very small, the brightness distribution is uniform, and gradient lines do not appear at the splicing position of the spliced large LED screen.

Description

technical field [0001] The invention relates to the technical field of screen display, in particular to a single-point brightness correction method and system for an LED screen. Background technique [0002] The LED display screen is a large-area display screen composed of dot matrix modules or pixel units composed of light-emitting diodes. It has the characteristics of stable performance, long service life, strong environmental adaptability, high cost performance, high integration, plug and play, no need for video splicer and video processor, compatible with various audio and video input and output devices, and is widely welcomed by users. [0003] In the current LED technology, each display manufacturing company will choose a company specializing in the production of LED luminous particles to purchase, but even if the same brand manufacturer, the same model and the same batch of LEDs are selected, the brightness and The shades all vary. This issue resulted in large scree...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/32
CPCG09G3/32G09G2320/0233
Inventor 王柏文苏卡尼罗伟邓曙波张金
Owner HUNAN GUOTIAN ELECTRONICS TECH CO LTD
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com