实现DE2上的摄像头采集，实现画中画，利用两个摄像头，在VGA上实现两个画面同时出现-DE2 on the camera to achieve the collection, to achieve PIP, using two cameras, the VGA screen to achieve two concurrent

摄像头采集数据的程序代码，使数据图像在屏幕中显示出来的程序。-Camera data acquisition program code, so that data images shown on the screen procedures.

de2,altera fpga开发板，自带的源码，ccd_pip-de2, altera fpga development board, comes with source code, ccd_pip