Realization of an Extensible Multimedia Document Model

Most multimedia systems or standards provide one fixed concept for the temporal and spatial specification of documents. But different application areas like computer based training or multimedia games require different (application specific) concepts to support and simplify authoring. It is a very complex or even impossible task to specify documents for different application areas based on the same document model. This paper presents a document model, an approach to simplify authoring of documents in different application areas and a framework that supports the realization of the introduced concepts. The framework uses an event based approach and a scheduling graph to realize the semantics of an application concept.