Event-based Synchronization of Model-Based Multimodal User Interfaces

environments utilize computers as tools supporting the user in his daily life, moving interaction with computers from a single system to a complex, distributed environment. User interfaces available in this environment need to adapt to the specifics of the various available devices and are distributed across several devices at the same time. A problem arising with distributed user interfaces is the required synchronization of the different parts. In this paper we present an approach allowing the event-based synchronization of distributed user interfaces based on a multi- level user interface model. We also describe a runtime system we created, allowing the execution of model-based user interface descriptions and the distribution of user interfaces across various devices and modalities using channels established between the system and the end devices.