ALEXANDRIA, Va., March 26 -- United States Patent no. 12,261,942, issued on March 25, was assigned to NAGRAVISION S.A. (Cheseaux-sur-Lausanne, Switzerland).
"Security of surveillance media" was invented by Michel Angel (Cheseaux-sur-Lausanne, Switzerland), Herve Retaureau (Cheseaux-sur-Lausanne, Switzerland) and Antony Celletti (Cheseaux-sur-Lausanne, Switzerland).
According to the abstract* released by the U.S. Patent & Trademark Office: "A media device receives a domain key from a service provider. The media device further encrypts media with a media key and encrypts the media key with the domain key to form an encrypted media token: the protected media key is encapsulated in an encrypted media token. The service provider may then recei...