Jürgen Tacken

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This paper describes the hierarchical, graphical SEA Language. The SEA Language relies on extended Predicate Transition Nets that unambiguously deene the semantics of graphical system speciica-tions. These nets are also used as a basis for simulating/animating system speciications. The SEA Language allows to easily incorporate several user deened or(More)
—In the near future, the trend of user-generated content and services currently observable in the Internet domain will also affect the mobile environment: mobile users will become able to easily create content and small services while on the move and offer them to social communities. Mobile users will no longer be pure consumers, they will also become(More)
This paper addresses the specification of security modules in a Mobile Digital Rights Management (DRM) approach with a focus on copy detection mechanisms. The presented DRM approach aims at enhancing the latest DRM standard of the Open Mobile Alliance (OMA). In particular, we present a completed DRM infrastructure, introduce additional entities for billing(More)
1 Introduction Today's embedded systems (ES) are characterized by more and more parallelism, distribution over different locations and hard real-time (RT) requirements. Consequently, the modern, structured design process has to deal with heterogeneous requirements and restrictions. Especially the integration of HW-design tasks with SW-design tasks and(More)
This article presents the potential for new business models in the context of user-generated content and services in the mobile environment. The approach is based on the concept of a new platform that incorporates multiple (mobile) network providers as well as private and commercial third party content and service providers. The potential for gaining and(More)
Dasi nternationale Forschungsprojekt uService entwickelt Werkzeuge, mitd enen Nutzer über ihreH andysm obile Dienstef ür sich unda ndere Nutzer erstellenkönnen. Diedeutschen Projektpartner konzentrieren ihreArbeitenauf den Anwendungsbereichder individuellenG esundheitsvorsorge durchSport, insbeson-dere Laufen.E ss olle ineP lattforme ntwickeltw erden, überd(More)
In this article, we describe a Service Creation Environment (SCE) that allows for protocol-and technology independent development, deployment, and maintenance of interactive, menu-driven mobile services for cellular networks. The presented SCE eases the maintenance of mobile services, in particular by means of versioning and access right management. The SCE(More)