interactive digital TV sets top box
interactive interface of digital TV
digital interactive business oriented language
digital interactive laboratories
digital interactive laboratory
digital interactive teachingsystem
interactive digital image processing
interactive digital plotter
interactive digital receiver simulator
Interactive Digital Set Top Box
interactive digital television system
Interactive TV
互动电视
互动电视业务
双向互动电视
交互电视
交互式电视
交互数字电视
new interactive TV infrastructure
VADIS Video Audio Digital Interactive System
Broadcasting for terrestrial digital TV
cable digital TV networking in cities and counties