Title: Charging method and device and system for digital multimedia broadcast system
Application Number: 200610112087 Application Date: 2006.08.29
Publication Number: 1909465 Publication Date: 2007.02.07
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: H04L12/14;H04N7/173;H04H1/00
Applicant(s) Name: Huawei Technologies Co., Ltd. Address:
Inventor(s) Name: Lu Linjun;Yao Hui
Attorney & Agent: zheng limeng
Abstract:
    The invention relates to a charge method of digit multimedia broadcast system, and a relative system, wherein said invention comprises: using SK (service key) to encrypt the CW (control word) and program price; using said encrypted CW and program price to form ECM (priority control message), to be sent to the user terminal; said user terminal decodes the ECM, and charges based on obtained program price. The invention based on encrypting CW, also encrypts the price and charge information via SK and PDK, to realize real-time charge function.
Time: 16