彩色LED屏驱动扫描关键技术研究  

Technology of Scanning Controller and Driver for Color LED Screen

作　　者：吴君钦[1] 苗瑞瑞[1] 李艳丽[1] 

机构地区：[1]江西理工大学信息工程学院,江西赣州341000

出　　处：《液晶与显示》2010年第2期253-256,共4页Chinese Journal of Liquid Crystals and Displays

基　　金：江西省自然科学基金项目(No.2008GZS0030)

摘　　要：介绍了基于PWM的LED亮度控制方法,分析了数字LED屏设计的难点和关键技术,重点讨论了LED屏扫描控制器的设计,提出了一种基于FPGA的实现方法。实验证明,使用该方法设计的LED扫描控制器结构灵活、性能优越,可以满足室内外彩色LED视频显示的要求。The brightness control method based on PWM is introduced. The difficult problems and key technology of digital LED screen are analyzed. The design of scanning controller for large scale LED screen is discussed,and a solution of scanning controller based on FPGA is proposed. The experiment results showed that the structure of the newly-designed scanning controller was flexible,its performance is excellent,and the LED screen controlled by this scanner is suitable for indoor and outdoor video display.

关 键 词：彩色LED屏 扫描控制器 LED PWM FPGA 

分 类 号：TN873[电子电信—信息与通信工程]