Tuesdays the PTO issues new patents. Both of today's Spotlight Patents concern aspects of digital rights management. Assigned to Oracle, the first patent addresses techniques for issuing rights in a digital rights management system. Assigned jointly to AMD and to ATI, the second patent addresses a Distributed digital rights management system.
8,646,102, "Method and apparatus for issuing rights in a digital rights management system," assigned to Oracle.
One embodiment of the present invention provides a system that facilitates issuing rights in a digital rights management system. The system operates by sending a request to perform an operation on an item of content from a client to a rights-management server, wherein the request includes a usage parameter which specifies constraints involved in performing the operation. Next, the system receives a response from the rights-management server, wherein the response indicates whether or not the client has rights to perform the operation in accordance with the constraints specified by the usage parameter. Note that the response may also include a hint that facilitates generating subsequent requests to perform the operation. Finally, if the client has rights to perform the operation, the system performs the operation on the item of content.
8,646,046, "Distributed digital rights management system and method," assigned jointly to AMD and to ATI Technologies (CA).
A digital rights management system includes an authentication module and a decryption module. If desired, the modules can be implemented in separate integrated circuits. The authentication module retrieves authentication information for protected content and powers down after the authentication information is retrieved. The decryption module decrypts the protected content based on the authentication information while the authentication module is powered down.