A method to synchronize the presentation of static and dynamic components of interactive multimedia documents

摘要

The document and its dynamic and static components are defined in the system by objects (CO, OS, OD). Within each object, sync. data (Tl, Tle, Tlb) relating to the instants of the presentation within a logical time frame derived from a coded reference time frame is provided. Within the object corresponding to the multimedia document and in each object corresponding to a static component, a sync. data item is provided (Tp) relating to a presentation instant within a physical time frame. In the object corresponding to a dynamic component, sync. data (Tt, Ttb, Tte) are provided relating to presentation instants in the coded reference time frame. These different sync. data items are processed at each change of presentation speed of the multi-media document to co-ordinate all the components of the presentation with both static and dynamic characteristics.