Rolf Reinema

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The distribution of the German government between Bonn and Berlin calls for the technical support for the collaborative document-based tasks performed by interand intra-ministerial work groups. While modern multimedia collaboration technology provides many important features, easy use and control of this technology by the end user is currently still a big(More)
In multimedia conferencing systems the need for confidentiality gains in importance. This goal can be achieved by encry:,ptiotr. III real-time video processing systems there is a special need jar partial data encryption. Existing methods and their weaknesses are investigated. In this paper we present a new approach for partial encryption of’ video data,(More)
The distribution of the German government between Bonn and Berlin calls for the technical support for the collaborative document-based tasks performed by interand intra-ministerial work groups. The currently available cooperation and communication tools do not provide an integrated and homogeneous cooperation environment suitable for this application(More)
This paper presents our ongoing research on the potentials of ubiquitous technologies for future workspaces. The Sm@rtLibrary serves as a test and demonstration environment for ubiquitous technologies and their application. In this area we are currently concentrating on localization and location management technologies, context-dependent services, platform(More)
Cooperative Rooms (COR) is an interdisciplinary research and development program of GMD in collaboration with partners. Its objective is to design, develop and investigate future workspaces by bringing together information and communication technology, architecture, design and management of buildings, and new flexible forms of individual and joint work.(More)