On Demand Consistency Maintenance in Heterogeneous Collaborative Graphics Editing Systems

With heterogeneous devices proliferating, there is a need for collaborative graphics editing systems that are tailored to the capabilities of their current computing and communications environment. Mobile network and device capabilities constrain the application implementation, which implies that the storage space and computing power is limited and network is unreliable. This paper presents a semi-replicated architecture and an on demand consistency maintenance scheme for mobile sites to cooperate with other desktops efficiently. To maintain the consistency of the replicas on mobile embedded devices, either data consistency or semantic similarity is maintained based on the prediction of the regions of interest. The scheme is realized in our prototype system of collaborative graphics editing system that can work well in heterogeneous environments