DIGITAL RIGHTS MANAGEMENT FOR DISTRIBUTED DEVICES
First Claim
Patent Images
1. A method for roaming digital rights management (DRM) protected content across a plurality of peer-to-peer devices, comprising:
- receiving DRM protected content including a local license at a first device of the plurality of peer-to-peer devices for restricting use of the DRM protected content at the first device according to a set of rights;
synchronizing the DRM protected content to a second device and enabling the second device to generate a remote license for the DRM protected content; and
reducing the set of rights of the local license in correspondence with a scope of the remote license generated by the second device.
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Abstract
DRM protected content is shared in a peer-to-peer device context. In various embodiments, systems are enabled for peer-to-peer digital rights management (DRM) content roaming via revocation and synchronization. Local license revocation and remote license creation can facilitate P2P DRM content roam using license share counts. Derivative share count licenses, or other derivative licenses, are generated on the target device, reducing the local license commensurately.
190 Citations
28 Claims
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1. A method for roaming digital rights management (DRM) protected content across a plurality of peer-to-peer devices, comprising:
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receiving DRM protected content including a local license at a first device of the plurality of peer-to-peer devices for restricting use of the DRM protected content at the first device according to a set of rights; synchronizing the DRM protected content to a second device and enabling the second device to generate a remote license for the DRM protected content; and reducing the set of rights of the local license in correspondence with a scope of the remote license generated by the second device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A first device of a plurality of peer-to-peer networked devices for receiving digital rights management (DRM) protected content from a second device of the plurality of peer-to-peer networked devices via synchronization changes received according to a synchronization protocol, comprising:
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an interface for receiving the DRM protected content from the second device via the synchronization protocol including license data derived from a second license of the second device that defines second rights to the DRM protected content on the second device; and a licensing component that generates a first license based on the license data that defines first rights to the DRM protected content on the first device whereby the second rights of the second license are reduced based on a difference between the second rights and the first rights. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. A user interface for a device of a plurality of networked devices, wherein the device transfers or receives digital rights management (DRM) protected content to or from, respectively, any other device of the plurality of networked devices via a synchronization protocol, comprising:
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a first user interface component for displaying at least one reception option for receiving a synchronization transfer of first DRM protected content and first license data from at least one other device of the plurality of networked devices; and a licensing component that generates a first local license based on the first license data that defines first rights for interacting with the first DRM protected content from the device. - View Dependent Claims (26, 27, 28)
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Specification