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:
Mar. 27, 2018
Filed:
Feb. 17, 2012
Peter Roelse, Hoofddorp, NL;
Peter Roelse, Hoofddorp, NL;
IRDETO B.V., Hoofddorp, NL;
Abstract
There is disclosed a method of controlling use of encrypted content by a plurality of client terminals each provided with a digital rights management (DRM) client and a content decryption module separate to the DRM client. First key information is provided for use by one or more selected ones of the DRM clients, and second key information is provided for use by one or more selected ones of the content decryption modules. Content key information is encrypted to form encrypted content key information such that the selected ones of the content decryption modules are enabled by the second key information to recover the content key information from the encrypted content key information. The encrypted content key information is further encrypted to form super-encrypted content key information such that the selected ones of the DRM clients are enabled by the first key information to recover the encrypted content key information from the super-encrypted content key information. Corresponding head-end and client terminal apparatus are also disclosed.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile