Digital television with separate device and card conditional receiving method based on smart card

The invention relates to a qualification receiving method of machine-card separated digital TV based on the intelligent card and belonged to the electronic information field, which divides the qualification receiving subsystem of present machine-card integrated digital TV receiver into the general part and the private part, wherein, the general part is in the digital TV receiver and the private is in the intelligent card. The general and the private parts are interconnected and interactive via the standard intelligent card qualification receiving interface to make the digital TV receiver as the general receiving platform. The intelligent card qualification receiving interface comprises: (1) machine-card authentication and consult build safe channel protocol; (2) machine-card communication protocol; (3) CA information filtration protocol; (4) man-machine interface protocol; (5) digital TV application data interactive protocol. The invention has easy realization and clear logic while compared to the machine-card separated method based on the qualification receiving module and the general interface, the inventive cost is very lower, and it can apply large scale machine-card separated rebuilding and the spreading of digital TV.