Patent ID: 6674859
Filing Date: 2004-01-06
Classification: G06F,H04L

Abstract:
A device for the protected output of an electronically transmitted and stored document (32) which is provided with electronic copy protection (34) or which is subject to copy protection, comprisinga storage unit (30) provided on a local computer system (10) for storage of the document and for preparation thereof for the output, a local processing and control unit (18) which co-operates with the storage unit (30) and with an external data processing installation (14) by way of a data communication network (12) and which is such that an additional operation and/or additional data can be linked with the document as a reaction to at least one online contact by way of the data communication network and the linked document can be prepared for output, an output unit (22-28) which is connected to the local processing and control unit and which is adapted for regular output of the linked document, and an interrogation and checking unit (36, 38; 46, 48; 50) which co-operates with the storage unit (30) and the processing and control unit (18) and which is adapted to detect violation and/or overriding of the copy protection of the document and as a reaction to such a violation and/or overriding prevents production of the linked document by the processing and control unit, wherein the local processing and control unit is such that a document stored in the storage unit remains unchanged in its stored form even by an additional operation and additional data.