基于USB-host技术显示屏控制系统的扩展研究

Extended Study of Display Control System Based on USB-host

指出了当前LED显示屏控制系统的特点及其局限性,提出了一种基于U SB-host技术和双单片机的LED显示屏控制系统的解决方案,首次将U SB主机应用于显示屏控制系统,给出了系统的设计原理、主要的硬件电路以及软件流程图。系统实现了通过读取U SB存储设备完成对LED显示屏的直接输入,提供了友好的人机交互界面,摆脱了传统控制系统对计算机和专用线路的依赖,大大拓宽了其应用市场。实践证明,基于该方案设计的显示屏控制系统能够完全满足用户的文本和图像发布需求,性价比高,具有广阔的市场价值。

With pointing out the features and the limitations of the current control system of LED display, a solution of LED display＇s control system which is based on USB-HOST and dual MCU was introduced. The USB host is applied into the control system of LED display for the first time. The design theory, the hardware circuit and the software flow are proved. The system can get the display data directly from the USB storage device, provide a friendly interface between man and machine, and get rid of the reliance of the computer and the special connection, which greatly broadened its application market. It is proved that the control system based on this solution can satisfy the users＇ requirement of promulgating text and image. With its high quality-price ratio it has wide market value.