In addition, this thesis expatiates concept of the Set Top Box and analyses elementary services such as digital TV service, TVOD service, NVOD service, STOCK service, browser service and games on-line.

• 论文并对数字机顶盒的概念和基本功能进行了分析，如数字电视业务、TVOD业务、NVOD业务、股票行情的接收和分析业务、浏览器业务和在线游戏业务等。