The US Patent Office
issues new patents on Tuesdays. Issued patents and published
applications may be early indicators of the kinds of issues being
addressed by inventors and/or the companies for whom they work. Here
are two recent patents relating to rights management. The first describes a content usage control system and is assigned to Fujitsu. The second describes a secure purchasing system and is assigned to 900pennies, inc.
6,873,975, Content usage control system, content usage apparatus, computer readable recording medium with program recorded for computer to execute usage method, assigned to Fujitsu.
A content usage control system comprises a copyright holder system, content server, license server and user system. The ACL setting section of the copyright holder system sets a license ACL expressed as a structure by a combination of logic sums and logic products of a plurality of partial licenses for the content, based on the user ID and a plurality of physical element IDs including media used in the user system, and stores the license ACL in an access control list. The license server controls the usage of the content by the user utilizing the access control list.
6,873,976, "Secured purchasing system," assigned to 900pennies, Inc.
A system and method for transferring an encrypted file over the Internet involves a seller, a buyer, and a transaction agent. The file has a first part (administrative information) and a second part (subject-matter content) that are respectively encrypted with first and second encryption/decryption non-public keys. In operation, the appropriate key is released by the seller or the transaction agent for respective use by either the transaction agent or the buyer, to decrypt and reveal the second part of the file to the buyer.