Method and device for exchanging digital content licenses
AssigneeThomson Licensing
InventorOlivier Courtay
Life of this patent
Estimating the term…
Abstract
Exchange of Digital Rights Management protected content between two devices without the need for a third party. Each user marks a license as unusable and the devices the trade licenses. A user then instructs the device to import the received license. The device verifies that a license has been rendered unusable and only then erases the unusable license and enables the device to use the new license. The content associated with a license may be traded before or after the license exchange, and may also be downloaded from a third party. Also provided is a device for exchanging licenses.
Claims12
A method of exchanging a first license for a first item of digital content against a second license for a second item of digital content, the method comprising, at a first device storing the first license, the steps of:
- receiving the second license from a second device;
- and
- if the first license has been rendered unusable to the first device:
- erasing the first license;
- and
- making the second license usable by the first device.
A device for exchanging a first license for a first item of digital content against a second license for a second item of digital content, the device comprising:
- a memory adapted to store a plurality of licenses;
- an interface adapted to receive the second license from a second device, and
- a processor adapted to:
- verify that the first license has been rendered unusable to the first device;
- and
- in case of positive verification:
- erase the first license from the memory;
- and
- make the second license usable by the first device.
Dependencies are inferred from the claim text.