Modeling a Mobile Memory Aid System

The electronic memory aid system MEMOS was developed at Leipzig University to support patients with memory disturbances. Starting from this application background MEMOS is designed as a distributed system where a central server component controls a special handheld computer, the Personal Memory Assistant (PMA), over a GSM or a GPRS cellular phone network. To guarantee a wide flexibility and adaptability of the system to concrete deployment scenario the structur- ing of the information which is generated by the system and processed by the PMA is an essential component of MEMOS. This paper describes the modeling of the central data structures and the consequences to the system architecture.