Invention Grant
- Patent Title: DRM system
- Patent Title (中): DRM系统
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Application No.: US14058492Application Date: 2013-10-21
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Publication No.: US08776259B2Publication Date: 2014-07-08
- Inventor: Wouter Baks , Franciscus L. A. J. Kamperman , Petrus J. Lenoir , Lukasz Szostek
- Applicant: Koninklijke Philips N. V.
- Applicant Address: NL Eindhoven
- Assignee: Koninklike Philips N.V.
- Current Assignee: Koninklike Philips N.V.
- Current Assignee Address: NL Eindhoven
- Priority: EP05109043 20050930
- Main IPC: G06F21/00
- IPC: G06F21/00

Abstract:
A method of and system for digital rights management, in which access to a piece of content is granted in accordance with a license owned by a license owner to a client who is a member of a domain. This requires successfully verifying that a membership relation exists between the client and the domain as reflected in a first state variable, and that an association relation exists between the license owner and the domain as reflected in a second state variable. Both relationships are revoked by executing an online protocol between the parties in the relationship after which both remove the corresponding state variable. The domain controller propagates the state administration relating to the domain is propagated to the client so that the client can update its state administration.
Public/Granted literature
- US20140130181A1 DRM SYSTEM Public/Granted day:2014-05-08
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