Today's patent applications address various aspects of DRM. Assigned to Microsoft, the first application discloses rights management using Recording Definition Information (RDI). Assigned to InterTrust, the second application is another divisional (same specification, different inventions / claims) of the "clearinghouse" spec, "Trusted Infrastructure Support Systems, Methods And Techniques For Secure Electronic Commerce Electronic Transaction And Rights Management."
20070277234, "Rights Management Using Recording Definition Information (RDI)," assigned to Microsoft.
Abstract
A rights management system is described in which, subsequent to recording a media resource, client-side equipment receives and stores recording definition information (RDI). The RDI provides information that can be used to recover the keys used to decrypt the media resource. When a client device subsequently wishes to consume the media resource, it can forward the RDI to an operations center. At the operations center, a transcription module validates the client device's rights and converts the RDI into client targeted information (CTI) by recovering the keys used to decrypt the media resource. The client device receives the CTI from the transcription module and uses it to consume the media resource. The CTI has an expiration date, after which it can no longer be used.
20070276759, "Trusted Infrastructure Support Systems, Methods And Techniques For Secure Electronic Commerce Electronic Transaction And Rights Management," assigned to Intertrust.
Abstract
An integrated, modular array of administrative and support services are provided for electronic commerce and electronic rights and transaction management. These administrative and support services supply a secure foundation for conducting transaction-related capabilities over electronic networks, and can also be adapted to the specific needs of electronic commerce value chains. In one embodiment a Distributed Commerce Utility having a secure, programmable, distributed architecture provides these administrative and support services. The Distributed Commerce Utility may comprise a number of Commerce Utility Systems. These Commerce Utility Systems provide a web of infrastructure support available to, and reusable by, the entire electronic community and/or many of its participants. Different support functions can be collected together in hierarchical and/or networked relationships to suit various business models or other objectives. Modular support functions can be combined in different arrays to form different Commerce Utility Systems for different design implementations and purposes.
