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http://dx.doi.org/10.5573/ieie.2017.54.6.123

Implementation of Optimal Flicker Free Display Controller for LED Display System  

Lee, Juyeon (J_LITECH)
Kim, Daesoon (Department of Digital Electronics & Information, VISION University College of Jeonju)
Lee, Jongha (Department of Digital Electronics & Information, VISION University College of Jeonju)
Publication Information
Journal of the Institute of Electronics and Information Engineers / v.54, no.6, 2017 , pp. 123-133 More about this Journal
Abstract
In this paper, we developed an optimal flicker-free control algorithm operating within 16 luminance implementation bits and 512 brightness implementation pulses irrespective of LPM(LED Pixel Matrix) module configuration on dynamic driving method of LED display system. As an implementation method, we turned the refresh rate up by increasing the number of scans through multiple shift-latches which were devised from conventional shift-latch scheme for full color representation. As a result, the LED display system of this method has no flicker phenomenon because of the novel refresh rate higher than 2,040[Hz] incomparable to 240~480[Hz] of conventional system.
Keywords
LED display system; flicker free; flicker; LED bright and color processor; LED display controller;
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