Every Thursday, the US Patent and Trademark Office publishes pending patent applications. Publication has no bearing on whether a patent will eventually be issued based on the application. Still, issued patents and published applications are often indicators of what people have been thinking about and the kinds of things that individuals or companies believe may be useful to them in the future. Here are two recently published applications, one dealing with a digital rights management system, no assignee disclosed, the other dealing with a secure access and copy protection management system assigned to Macrovision Corporation.
20050080746, "Digital rights management system," no assignee disclosed.
A public licensing infrastructure (PLI) for a digital rights management (DRM) system is described. In an implementation, a method includes generating a formal license for content. The formal license includes a decryption key for decrypting the content and access rules for accessing the content. A plurality of license authorities is configured to provide a plurality of partial licenses. The plurality of partial licenses is combinable to form the formal license. Each license authority provides a respective partial license.
20050078822, "Secure access and copy protection management system," assigned to Macrovision Corporation.
An application, media drive, and media are configured so as to cooperate with one another to provide secure access and copying of protected content on the media. The application cooperates with the media drive to identify the media as a cooperating component, and in the process, also identifies the media drive as a cooperating component. The media includes information facilitating such identifying activity, such as a fingerprint indicating the copy protection method used to protect the content. Also included on the media is a guard module that authenticates the application as a cooperating component, establishes secure channels respectively with the application and the media drive for communicating secret information, installs licenses included on the media, and only allows access to the protected content if the media is an original copy. The application then manages usage and/or copying of the protected content according to the installed licenses.