将模拟音频和视频信号转换为数字信号并压缩后，通过USB口传给上位机，上位机进行图像显示和声音播放。-Analog audio and video signals into digital signals and compressed, to the host computer via the USB port, the host computer for image display and sound playback.

笔记本通过WIFI查看USB摄像头上位机程序-vb for wifi usb