Radio on Demand

This paper describes a petri net inspired interaction spec-iication formalism with an application to a radio on demand service: InfoRadio-on-Demand. A prototype of a Tele Commerce application with a hybrid architecture: www, e-mail and e-cash store. 1 Background In our workgroup Interactive Information Systems we focus on the following topics: Internet goes Business, WWW Showcases for Newspapers, Banks, Research Institutes, Radio stations. Integration of MultiMedia TeleServices (MMTS) in WWW. One objective of our research activities is the integration of classical media in WWW. We design prototypes of converters, multimedia services and distribution schemes. These are ooered to internet aware content providers. We focus on transformations of old media into new me dia. We are interested in the implications of a transformational trial. Which dimensions are lost and which are new. Will the former content provider or distributer still be able to distribute the new product? Since may the 12th 1995 we provide the service digiTaz in internet SM95]. We cooperate with InfoRadio of SFB/ORB IR]. An overview of the activities of our project is to obtain from our media page WP]. 2 Introduction Designing multimedia services involves peoples with diierent roles in a communication between solution provider and content provider. They need a common base of communication. In this paper RoD] an Interaction Speciication Formalism is presented. It ooers graphical elements to model an interactive information system with respect of the time dimension. This formalism is not automated. It is bound to notes on a sheet of paper. InfoRadio-on-Demand is a service which is designed by a small group of developers. In the design phase the form sheets were applied. The documentation of the system contains digitized graphs of this formalism. It is shown how close ? The work discussed in this paper was performed in the context of BERKOM DTB], where many of the ideas were born. We would like to acknowledge the discussions with our colleagues Stephan Fr uhauf and Dirk Kuhlmann.