The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 11, 2019
Filed:
Dec. 01, 2016
Academy of Broadcasting Science, State Administration of Press, Publication, Radio, Film & Television, Beijing, CN;
Beijing Novel-super Digital Tv Technology Co., Ltd, Beijing, CN;
Zhifan Sheng, Beijing, CN;
Qiang Wang, Beijing, CN;
Jing Zhang, Beijing, CN;
Zheng Li, Beijing, CN;
Lei Wang, Beijing, CN;
Zhijian Liang, Beijing, CN;
Xiaoxia Guo, Beijing, CN;
Dongfei Wang, Beijing, CN;
Abstract
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.