LED大屏幕显示校正系数配置系统

Display Calibration Coefficient Configuration System Used in LED Panel

为了有效地写入和读出在LED大屏幕显示控制系统中使用的校正系数,开发了基于USB接口和FPGA的LED大屏幕显示校正系数配置系统。介绍了串行Flash及其在LED显示系统中的作用。设计了系统的硬件电路,包括高速USB接口控制芯片和FPGA。设计了系统的软件程序,包括USB固件程序、PC端用户程序和FPGA配置程序。实验结果表明,该系统能够准确写入和读出校正系数,擦除每个扇区大约0.6s,数据写入速度可达到2.3Mbit/s,数据读出速度可达到30Mbit/s。该系统在LED大屏幕显示控制系统的校正系数维修中能够起到重要作用。

To effectively write and read the calibration coefficients used in LED panel display control system,a display calibration coefficient configuration system based on USB interface and FPGA was developed.Firstly,the serial flash and its application in LED display systems were introduced.Next,an electrical circuit is built,including a FPGA chip and a USB peripheral controller chip.Finally several programs were developed,including a USB firmware,a PC user program and a configuration program for the FPGA.Experiments show that the calibration coefficients can be correctly written and read with this system.Each sector of the flash can be erased in 0.6 s.The data can be written in 2.3 Mbit/s and read in nearly 30 Mbit/s.This system is easy to use,and it can take an important role in the calibration coefficients operation of the LED panel display control system.