Invention Grant
- Patent Title: Computational efficiently obtaining a control word in a receiver using transformations
- Patent Title (中): 计算有效地使用转换获得接收器中的控制字
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Application No.: US12980978Application Date: 2010-12-29
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Publication No.: US09106795B2Publication Date: 2015-08-11
- Inventor: Ettore Benedetti , Arnoud Evert Van Foreest
- Applicant: Ettore Benedetti , Arnoud Evert Van Foreest
- Applicant Address: NL Hoofddorp
- Assignee: Irdeto B.V.
- Current Assignee: Irdeto B.V.
- Current Assignee Address: NL Hoofddorp
- Agency: Reed Smith LLP
- Agent Marc S. Kaufman
- Priority: EP10151677 20100126; EP10196221 20101221
- Main IPC: H04N7/167
- IPC: H04N7/167 ; H04N7/16 ; H04N21/266 ; H04N21/418 ; H04N21/4623 ; H04L9/08
Abstract:
The invention provides a receiver, a smartcard and a conditional access system for securely obtaining a control word using an entitlement transform tree, wherein intermediate results are cached to improve computational efficiency.
Public/Granted literature
- US20110268271A1 COMPUTATIONAL EFFICIENTLY OBTAINING A CONTROL WORD IN A RECEIVER USING TRANSFORMATIONS Public/Granted day:2011-11-03
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