Application of USB2.0 in infrared sequence image transmission

摘要

The paper presents a practical system based on DSP and USB2.0 to realize the transmission of digital infrared sequence images. The hardware design of system is analyzed in detail, in which USB interface controller is described, moreover the development of DSP software and the application program on host PC is also introduced. The system interfaces PC with EZ-USB chip CY7C68001. It is based on bulk transmission with one frame image as a unit, and the chip is configured in Slave FIFO, asynchronous read/write operating mode. Experimental results show that the developed system can work properly and achieves the data transfer speed of 50 Mbps, thus it can meet the requirement for real time transfer of infrared sequence image sized 256×256×8 bits per frame at 100 frames per second.