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:
Feb. 10, 2015
Filed:
Jun. 13, 2013
Nagravision S.a., Cheseaux-sur-Lausanne, CH;
Fabien Gremaud, Chatel-St-Denis, CH;
Christophe Gogniat, Romanel-sur-Lausanne, CH;
Marc Bellocchio, Aubagne, FR;
Pascal Fuchs, Lausanne, CH;
Nagravision S.A., Cheseaux-sur-Lausanne, CH;
Abstract
The present invention describes a system and a method for securely loading digital information from an external storage device in a non-trusted environment into a memory module in a trusted environment within a data processing system. A master mode and a service mode are described, the master mode being when the secure loading is requested by a secure processor residing within the trusted environment and the service mode being when the loading is requested by an element which is external to the trusted environment i.e. in the non-trusted environment. The system comprises at least one storage device, one memory module and at least one first processor, and further comprises a memory access controller module connected between the processor and the memory module, and a secure memory management module connected to the processor, the memory module, the storage device and the memory access controller. Requests for data made by either the first processor or the external element are passed to the secure memory management module, which loads the data from the storage device to the memory module and configures the memory access controller such that the processor will have access to the data.