基于可编程逻辑器件的LED显示屏控制系统设计  

Control System Design of LED Display Based on Programmable Logic Device

作　　者：张建军[1] 陈钟荣[1] 

机构地区：[1]南京信息工程大学电子工程系,江苏南京210044

出　　处：《液晶与显示》2006年第4期398-402,共5页Chinese Journal of Liquid Crystals and Displays

基　　金：江苏省高校高新技术产业发展项目(No.JH02-121)

摘　　要：针对利用单片机设计LED显示屏控制系统中所存在的问题,提出了基于可编程逻辑器件设计和实现的大屏幕LED显示系统,并用串并结合的方案取代以往控制器和显示屏之间串行的数据传输方式。此外,增加光频转换器TSL235,根据环境变化实时调整显示亮度。该系统具有刷新速度快、亮度高、灵活配置、功耗低等特点,外接16 MHz时钟,显示屏能够清晰地显示汉字。To solve the problem appeared in LED display screen control system designed by singlechip,this article introduces a large screen LED display control system based on programmable logic device, which replaces the single serial transmit mode with the combination of serial and parallel mode between the controller and display screen. Besides,the system appends a light-to-frequency converter TSL235. It can adjust brightness of the screen according to the light intensity of environment. The characteristics of this system are high speed of refresh, high brightness, high flexibility and lower power. It can display characters clear when the clock frequency is 16 MHz.

关 键 词：LED显示屏 可编程逻辑器件 高速集成电路硬件描述语言 光频转换器 

分 类 号：TN27[电子电信—物理电子学] TP332.1[自动化与计算机技术—计算机系统结构]