一种由微机到LED显示屏的图像信号传输的实现

REALIZATION OF GRAPH SIGNAL TRANSMISSION FROM MICROCOMPUTER TO LED SCREEN

分析了在LED显示屏中使用的BMP格式图像的结构,并对现有常用数据通讯的方式做出比较,从实际工程出发,同时选择了RS-232C和RS-485两种接口标准作为通讯方式,微机一侧采用VB编写通讯软件,LED显示屏一侧采用89C51单片机接收图像信号并控制显示的图像显示.

The structure of BMP graph used in LED screen is analyzed, and a series of modes of data communication is compared. In fact, RS - 232C and RS - 485 communication modes are used at the same time. VB is used as programming language to write communication software. SCM is used to receive data and to control showing of LED screen.