DIGITAL RIGHTS MANAGEMENT

It is a science. the abstract side of the science. Actually I do not undurstand this kind of Science. Or may be you understand it ???

In a digital rights management (DRM) scheme a mobile terminal (1) registered with mobile telecommunications network (3) obtains encrypted content data (26) from content provider (21) and a rights object (28) containing a licence to use that data from rights issuer (23). The mobile terminal (1) is associated with mobile terminal (11), PC (25) and PDA (27) in a domain. Various arrangements are disclosed for enabling a second device to consume the content data (26) received by the device (1). The content data (26) is consumed on the second device in a controlled manner. The second device may or may not be a member of the domain (24). The first device may enable the second device to temporarily join the domain (24), if the second device is not a member of the domain (24), in order to allow the second device to consume the content. In another embodiment the first and second devices may already be a member of the same domain (24). In this other embodiment the first and second devices are prevented from simultaneously consuming the same content. In a further embodiment, the first and second devices are not members of the same domain. In this further embodiment, the first device obtains permission from the rights issuer (23) to enable the second device to consume the content.


WO/2006/117555