ALEXANDRIA, Va., Nov. 11 -- United States Patent no. 12,470,781, issued on Nov. 11, was assigned to DIVX LLC (San Diego).
"Federated digital rights management scheme including trusted systems" was invented by Eric William Grab (San Diego), Chris Russell (San Diego), Francis Yee-Dug Chan (San Diego) and Michael George Kiefer (Lake Havasu City, Ariz.).
According to the abstract* released by the U.S. Patent & Trademark Office: "Federated systems for issuing playback certifications granting access to technically protected content are described. One embodiment of the system includes a registration server connected to a network, a content server connected to the network and to a trusted system, a first device including a non-volatile memory tha...