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Method for adjusting luminance of light-emitting diode (LED) display screen

A technology of LED display and brightness adjustment, applied to static indicators, instruments, etc., can solve problems such as image distortion, achieve the effect of preventing loss and improving the quality of image display

Inactive Publication Date: 2012-09-05
HEBEI LIXIANG HUIKE ELECTRONICS EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide a method for adjusting the brightness of LED display to solve the problem of image distortion of LED display at lower brightness

Method used

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  • Method for adjusting luminance of light-emitting diode (LED) display screen
  • Method for adjusting luminance of light-emitting diode (LED) display screen
  • Method for adjusting luminance of light-emitting diode (LED) display screen

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Embodiment Construction

[0015] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0016] see figure 1 , the brightness adjustment method of LED display screen in the present embodiment comprises the following steps:

[0017] 101. Obtain the digital video data of the LED display screen, the digital video data is in DVI-D format, including the grayscale data of each pixel (including the grayscale data of three colors of R / G / B, each grayscale The data is 8 bits, with a total of 256 gray levels).

[0018] 102. Perform nonlinear transformation on the above grayscale data, so as to expand the 8-bit grayscale data into grayscale data larger than 8 bits. Among them, the number of ext...

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Abstract

The invention discloses a method for adjusting the luminance of an LED display screen, which comprises the following steps of: acquiring the original grey scale data N of each pixel point of the LED display screen; performing nonlinear transformation on the original grey scale data N to obtain the grey scale data M after data bit expansion; and adjusting the luminance of each pixel point according to a formula of L=M*K, wherein L is an attenuated luminance value and K is a preset luminance attenuation coefficient. Compared with the prior art, the embodiment of the invention has the advantage that: the data bit expansion is performed on the grey scale data in the invention, so that the high-grey scale display of the LED display screen under low luminance is realized, the loss of original grey scale signals is prevented, and the image display quality is greatly improved.

Description

technical field [0001] The invention relates to the technical field of LED display screens, in particular to a method for adjusting the brightness of an LED display screen. Background technique [0002] More than 90% of people's information comes from eyes. As a visual information display device, LED display has variable information, rich colors, high brightness, large viewing angle, long viewing distance and low power consumption. , high reliability, long life, many specifications and varieties, waterproof and other advantages, can meet the needs of various application scenarios, the development prospect is very broad, is recognized as the most growth potential and the fastest growing LED application market, has been widely used in various industries. For the LED display, the issues that must be considered are color, clarity, gray scale, brightness adjustment, etc. Since the outdoor ambient light changes in a relatively large range (such as day and night), it is necessary ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/32
Inventor 张文祥
Owner HEBEI LIXIANG HUIKE ELECTRONICS EQUIP