The design of hardware including : a digital video codec / decodec chip ( adv611 ) produced by ad inc . based on wavelet transform ; a usb controller ( pidusb12 ) collecting the compressed digital video signal ; a spread spectrum platform ( at - 340dsh ) sending / receiving the spread spectrum signal ; and a dsp controlling the all system 硬件部分的设计:小波变换编码部分选用ad公司的adv611芯片;视频的采集通过usb口;信道部分选择了基于扩频技术的无线扩频平台at ? 340dsh ;整个系统由ti公司的tms320vc5402作为主控机来完成。