DVB-CA系统的基本框架的学习； 学习TS流的结构，PSI信息分析。用软件进行TS流的PSI信息提取。 -Learning the basic framework of DVB-CA system learn the structure of the TS stream the PSI information analysis. PSI information extraction software TS stream.

利用焦点的获取与丢失，使得程序全部成为键盘流-Acquisition and loss of focus, makes the program all the keyboard stream