Method and system for transferring or returning unused digital rights

摘要

A message for processing a rights object (RO) in the DRM system and a method and system for processing the RO using the same are disclosed. A message for requesting submission or return of an unused/partially consumed rights object (RO) is newly defined. When an authenticated device generates such a request message and transmits it to a server, the server checks whether there exists an ID of a receiving device in the request message. If an ID of a receiving device exists in the request message, the server performs a procedure for submitting the RO to the ID of the receiving device. If, however, the ID of the receiving device does not exist, the server performs a procedure of returning of the RO or issuing of a different RO. Accordingly, the unused RO or partially consumed RO can be returned or submitted to a different device by using the request message.