Digital copyright management unit for digital copyright management system

摘要

DRM client unit of the DRM system (3) and DRM user unit in order to do DRM server unit (1) and interaction (2), the above-mentioned DRM client unit (3) digital data object (DDO) remembers this invention, the above-mentioned DRM server unit (1), the digital copyright object which shows the use right of the digital data object which it is related (DRO) regards the DRM user unit which issues. The above-mentioned DRM user unit (2) has certification unit (21) with, right memory unit in order to remember the above-mentioned digital copyright object (22) with. At the time of this inventing, the DRM client (31) certification is rearranged the DRM user unit which is owned by the end user vis-a-vis (2). This, although digital copyright object it becomes the license of the individual who can be used with the plural reproducing arrangements/the playback system, has had the advantage becoming impossible from the purchase contents to draw up the illegal copy of every kind of type. Executing the software routine of that itself specification in DRM user unit (2), DRM client unit of the user (3) the DRM client who moves at on (31) it is possible to certify the service provider.