The PTO issues new patents on Tuesdays.Both of this week's Spotlight Patents concern aspects of digital rights management. Assigned to Toshiba (JP), the first patent addresses techniques for a content delivery service. Assigned to LG Electronics, the second patent addresses techniques for sharing rights object in digital rights management.
8,566,457, "Content delivery service providing apparatus and content delivery service terminal unit," assigned to Toshiba (JP).
On the content delivery side, a user management control unit manages authentication information and the distribution of a delivery list at the time of delivering service, the acceptance of a content select request, and charging and settlement on a user basis. On the other hand, an encrypted content control unit creates a content key and an encrypted content using the content key on the basis of a content key creating condition from a copyright owner or copyright manager. Then, an encrypted content key control unit encrypts the corresponding content key using medium information, or medium information and terminal device unique key information presented at the content request, delivers the key to the requester. Then, a content delivery control unit delivers the corresponding encrypted content to the requester at the content request.
8,554,927, "Method for sharing rights object in digital rights management and device and system thereof," assigned to LG Electronics (KR)
A method for sharing Rights Object (RO) of a specific DRM content resident in a certain device with different devices (or terminals) in a Digital Rights Management (DRM) system, in which a first device and a second device can share an RO for DRM content by performing a mutual authentication between the first device and the second device to set a session therebetween; creating, by the first device, a second RO for the second device; and transferring the second RO from the first device to the second device through a particular interface. Thereby, while the first device consumes a specific DRM content with employing the first RO, the second device simultaneously consumes the specific DRM content with the second RO transferred from the first device.