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1. (WO2018086477) DIGITAL TELEVISION DESCRAMBLING METHOD AND DEVICE

Pub. No.:    WO/2018/086477    International Application No.:    PCT/CN2017/109052
Publication Date: Fri May 18 01:59:59 CEST 2018 International Filing Date: Fri Nov 03 00:59:59 CET 2017
IPC: H04N 21/4623
Applicants: SHENZHEN SKYWORTH DIGITAL TECHNOLOGY CO., LTD
深圳创维数字技术有限公司
Inventors: GAO, Xiang
高翔
Title: DIGITAL TELEVISION DESCRAMBLING METHOD AND DEVICE
Abstract:
A digital television descrambling method and device. The method comprises: receiving a channel switching command for switching to a target program; determining whether a prestored authentication control information contains target authentication control information of the target program; if so, transmitting to a smart card the target authentication control information; receiving a control word responded by the smart card; and configuring, according to the control word, a descrambler, and descrambling the target program.