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:
Dec. 01, 2009
Filed:
Nov. 19, 2004
Franciscus Lucas Antonius Johannes Kamperman, Eindhoven, NL;
Gerardus Cornelis Petrus Lokhoff, Eindhoven, NL;
Feng LI, Shanghai, CN;
Darwin He, Shanghai, CN;
Wilhelmus Franciscus Johannes Fontijn, Eindhoven, NL;
Steven Broeils Luitjens, Eindhoven, NL;
Wenying You, Shanghai, CN;
Gongming Wei, Shanghai, CN;
Franciscus Lucas Antonius Johannes Kamperman, Eindhoven, NL;
Gerardus Cornelis Petrus Lokhoff, Eindhoven, NL;
Feng Li, Shanghai, CN;
Darwin He, Shanghai, CN;
Wilhelmus Franciscus Johannes Fontijn, Eindhoven, NL;
Steven Broeils Luitjens, Eindhoven, NL;
Wenying You, Shanghai, CN;
Gongming Wei, Shanghai, CN;
Koninklijke Philips Electronics N.V., Eindhoven, NL;
Abstract
The present invention relates to a method and a system for performing digital rights management. The idea of the invention is that a master right associated with a content is stored at a first authorized device (). An authorized device is a device which can be considered trusted and performs actions with contents according to the associated rights. These devices enforce rights that are bound to contents, and perform the security tasks of the DRM system employed. A subright is derived from the master right, which subright controls what type of access a second authorized device () is given to the associated content. Finally, the subright is distributed to the second authorized device, given that the second device complies with predetermined distribution criteria associated with the master right. The device distributing the subright authenticates the device which is to receive the subright, ensuring that the second device can be trusted.