Patent ID: 7627903
Filing Date: 2009-12-01
Classification: G06F

Abstract:
1. A method for performing digital right management in a network, the method comprising: storing, in a first authorized device, a master right associated with a content, which master right controls what type of access the first authorized device has to the associated content; deriving a subright from the master right, which subright controls what type of access a second authorized device is given to the associated content; distributing the subright to the second authorized device, if it is determined by at least the first authorized device that the second authorized device complies with a predetermined distribution criterion associated with the master right; measuring a distance between the first authorized device and the second authorized device, and allowing, by means of exercising the subright, the second authorized device access to the associated content if the distance between the first authorized device and the second authorized device is smaller than a maximum access distance.