Digital multimedia file e.g. MPEG-2 type video file, distribution controlling method for e.g. Internet, involves transmitting reconstitution preference parameters of part of original file on terminal by server through network

摘要

The method involves transmitting reconstitution preference parameters of a part of an original digital multimedia file e.g. MPEG-2 type video file, on a terminal by an authorization server i.e. Lightweight Directory Access Protocol (LDAP) server, through a telecommunication network (2a) e.g. Internet. The preference parameters are modified at any moment by a content diffusion rights holder (9). A temporary key is calculated by an application executed by usage condition server (5), in the authorization server. An independent claim is also included for a digital multimedia file distributing device comprising a preference parameter server.