Increasing shift frequency of LED display control system

HAO Ya-ru; DENG Zhao-qi; DENG Chun-jian

doi:10.3788/YJYXS20163105.0470

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Increasing shift frequency of LED display control system

Driving and Controlling | 更新时间：2020-08-12

- Increasing shift frequency of LED display control system
- Chinese Journal of Liquid Crystals and Displays Vol. 31, Issue 5, Pages: 470-476(2016)
- 作者机构：
  
  电子科技大学中山学院, 广东中山 528402
- 作者简介：
- 基金信息：
- DOI：10.3788/YJYXS20163105.0470
  CLC： TN27;TN702
- Received：22 December 2015，
  
  Revised：15 January 2016，
  
  Published：05 May 2016
- 稿件说明：
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郝亚茹, 邓招奇, 邓春健. LED显示控制系统移存频率加速方法研究[J]. 液晶与显示, 2016,31(5): 470-476

HAO Ya-ru, DENG Zhao-qi, DENG Chun-jian. Increasing shift frequency of LED display control system[J]. , 2016,31(5): 470-476
郝亚茹, 邓招奇, 邓春健. LED显示控制系统移存频率加速方法研究[J]. 液晶与显示, 2016,31(5): 470-476 DOI： 10.3788/YJYXS20163105.0470.

HAO Ya-ru, DENG Zhao-qi, DENG Chun-jian. Increasing shift frequency of LED display control system[J]. , 2016,31(5): 470-476 DOI： 10.3788/YJYXS20163105.0470.

摘要

针对LED显示控制系统中移存频率受限于SDRAM的有效读取频率的问题

提出一种加速移存频率的方法。以LED显示控制系统的硬件逻辑为基础

建立扫描频率、移存频率、SDRAM有效读取频率等关键参数的相关数学模型

分析影响扫描频率的各种因素

提出图像数据拆分重组算法用于提高SDRAM的有效读取频率和移存频率。利用硬件逻辑实现该算法后

移存频率由原来的8.25 MHz提升到66 MHz

这就可以最大限度的发挥LED灯驱动芯片的移存能力

LED显示屏扫描频率也随之大幅提高。

Abstract

A method of increasing shift frequency is proposed in LED display control system. Firstly

mathematical relationship of shift frequency

scanning frequency and effective reading frequency of SDRAM is established to analyze how to increase the former based on hardware logic. Moreover

a splitting and reorganization algorithm of image data is realized to promote shift frequency from 8.25 MHz to 66 MHz

which can maximize the performance of the LED driver chip

and the scanning frequency is also greatly improved.

关键词

Keywords

references

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