Gray scale display driving method and device for LED display

An LED display and display driving technology, applied in static indicators, instruments, etc., can solve the problems of affecting the display effect, different durations, uneven lighting, etc., and achieve the effect of improving the display effect and improving the uniformity of lighting.

Inactive Publication Date: 2014-06-18
宁波凯睿信息技术咨询有限公司
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  • Summary
  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the weight of the bit data of the grayscale data adopts 2 n To represent, so the duration of different sub-frames is different, which will lead to uneven lighting, thus affecting the display effect

Method used

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  • Gray scale display driving method and device for LED display
  • Gray scale display driving method and device for LED display
  • Gray scale display driving method and device for LED display

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Embodiment Construction

[0052] Various embodiments of the invention will be described in more detail below with reference to the accompanying drawings. In the various drawings, the same elements are denoted by the same or similar reference numerals. For the sake of clarity, various parts in the drawings have not been drawn to scale.

[0053] figure 1 It is a schematic block diagram of a conventional LED display system. The LED display system includes an LED display controller and N serially connected LED unit boards 1 to N, wherein N is an integer greater than or equal to 1. Each LED unit board includes A LED driving circuits, and each LED driving circuit is used to drive B LEDs, where A and B are integers greater than or equal to 1 respectively. Therefore, the LED display system can drive a total of N*A*B LEDs.

[0054] The LED display controller provides the data signal DATA to the LED unit board 1, and provides a set of control signals to the LED unit board 1 to the LED unit board N respective...

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PUM

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Abstract

The invention discloses a gray scale display driving method and device for an LED display. The gray scale display driving method comprises the steps that all the n data bits of a gray scale datum are divided into m subframes, wherein n is an integer larger than or equal to 2, and m is an integer larger than or equal to 1; the preset weight C of each subframe is calculated; the weights of all the n data bits are established so that the combination of the weights can represent all gray scales; all the n data bits are combined into m subframes to enable the weight of each subframe is approximately equal to the preset weight of the corresponding subframe; the corresponding data bit of each subframe is displayed. The gray scale display driving method and device for the LED display can ensure uniformity of luminance on the premise that the refresh rate of a display system is increased, and then the display effect is improved.

Description

technical field [0001] The present invention relates to LED display technology, more specifically, to a grayscale display driving method and device for LED displays. Background technique [0002] The pixel elements used in LED displays are LEDs. LED displays have the following advantages: high brightness, wide viewing angles, rich colors, and customizable screen shapes. Therefore, LED displays are widely used in various fields such as industry, transportation, commercial advertising, information release, and sports competitions. [0003] In order to adapt to the luminous and electrical characteristics of LEDs, corrections must be made before the video signal is supplied to the LED display. The nonlinear correction method mainly used at present is γ (Gamma, gamma) correction. For example, gamma correction corrects the 8-bit display data DATA of the input video signal, and the corrected grayscale data needs to be larger than 8 bits, such as 12 bits, so that the corrected gr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/32
Inventor 斯斐霞孙熙文赵启永刘志峰韩健陈日仪
Owner 宁波凯睿信息技术咨询有限公司
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