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Design of White Balance Correction Processor for High Resolution Full Color LED Display System  

Lee, Jong-Ha (Dept. of Information & Digital Electronic Engineering, Vision University of Jeon-Ju)
Ko, Duck-Young (Dept. of Information & Digital Electronic Engineering, Vision University of Jeon-Ju)
Publication Information
전자공학회논문지 IE / v.46, no.3, 2009 , pp. 12-18 More about this Journal
Abstract
In this paper, we developed white balance correction processor for Full Color LED Display System which could be display uniformity color and soft light by adjusting brightness of red, green, blue pixel, individually. This processor correct brightness by calculating operating current of each pixel(red, green, blue LED) on the basis of characteristic curve of LED device when we named "a" as a specific characteristic value, "b" as a brightness correction value according to using time, "X" as a operating current value, and "Y" as brightness value. As the results, we solved the reduction problem of brightness for long used LED devices, according to increase entire mean of brightness value by adjusting "b" value from the brightness characteristic function.
Keywords
White balance; Brightness correction; LED Characteristics; LED display system;
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