Beijing Novel-super Digital Tv Technology Co., Ltd.

Academy of Broadcasting Science, State Administration of Press, Publication, Radio, Film & Television

Dongfei Wang

Lei Wang

Qiang Wang

Zheng Li

Lei Zhang

Zhifan Sheng

Xiaoxia Guo

Zhijian Liang

The present invention provides a conditional access method for an intelligent operating system that comprises a trusted execution environment. A digital TV module acquires all channel messages and a control management message. A media play module distributes a DescramblerId and sends the acquired videoPid, audioPid, casId, ecmPid and emmPid and the descrambler message DescramblerId to a conditional access module. The conditional access module selects a registered conditional access application module according to the casId. The conditional access application module acquires corresponding ecm Data and emm Data from the digital TV module, and sends the ecm Data and emm Data to the conditional access module. The conditional access module sends the messages to a trusted application module. The trusted application module performs parse to acquire EK, EKand ECW. The security chip controls a descrambler corresponding to the DescramblerId to perform descrambling according to the acquired messages.

Conditional access method and system for intelligent operating system

Growing community of inventors

Beijing, China

Dongfei Wang