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US 2010/0146637 A1Published application
Method for moving rights object in digital rights management
OwnerSeung-Jae LEEinventor
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Abstract
A method for moving Rights Object (RO) in a Digital Rights Management (DRM). RO for content is partially or entirely moved between Devices in the same group, so that the RO can be shared between the Devices and a utility thereof can be enhanced.
Claims6
A method for moving Rights Object (RO) in a Digital Rights Management (DRM) system, comprising:
- moving, to a second device that includes a DRM agent, a part of a rights object (RO) related to certain contents subject to digital rights management, by a first device having the rights object (RO) stored therein;
- and
- deleting, by the first device, the part of the rights object (RO) stored in the first device when movement of the part of the rights object (RO) is completed.
A method of handling digital rights management of digital contents between a first device and a second device, the method performed by the second device and comprising:
- receiving, from the first device, a part of a rights object (RO) related to a particular digital content that is accessible by the first device, the first device having checked whether a move permission exists for the rights object (RO);
- and
- accessing the particular digital content using the part of the rights object (RO) received from the first device,
- wherein the rights object (RO) is either a Stateless rights object (RO) or a Stateful rights object (RO), the Stateless RO being a rights object for a device that does not manage state information, and the Stateful RO being a rights object for a device that manages state information,
- wherein the state information indicates a usable amount of a corresponding rights object,
- wherein one state information is managed by the Stateful RO, and
- wherein the Stateful RO includes constraint elements comprising at least one of ‘interval’, ‘count’, ‘timed-count’, ‘accumulated’, ‘datetime’, ‘Individual’, and ‘system.’
4 more elements
Dependencies are inferred from the claim text.