On Synchronized Presentation Management in Multimedia Database Systems

Extended Abstract The extension of database systems to support multimedia applications requires new mechanisms to ensure the synchronized presentation of multiple media data streams. In order to exibly and eeciently present multimedia data streams to users, media streams must be segmented into media objects and time constraints among these objects must be speciied and maintained. New management tools to eeectively manage the time-related characteristic of multimedia data must thus be superimposed on existing database systems. In this paper, we discuss issues relevant to synchronized presentation management in multimedia database systems. We present principles underlying the synchronized presentation of multiple media data streams when delay eeects are considered. Various synchronization mechanisms can be designed based on the proposed principles.