Abstract: In order to track activities in a computerized system with client-server or other communications, a system configuration is needed which monitors, logs and reports traffic. This is somewhat akin to but not entirely similar a firewall. Thus, the invention contemplates a real-time, platform-independent, rule-based activity monitor for detecting a particular activity of interest as it occurs and for reporting such activity and the user substantially as fast.

Abstract: In order to track activities in a computerized system with client-server or other communications, a system configuration is needed which monitors, logs and reports traffic. This is somewhat akin to but not entirely similar a firewall. Thus, the invention contemplates a real-time, platform-independent, rule-based activity monitor for detecting a particular activity of interest as it occurs and for reporting such activity and the user substantially as fast.

Abstract: In order to track activities in a computerized system with client-server or other communications, a system configuration is needed which monitors, logs and reports traffic. This is somewhat akin to but not entirely similar a firewall. Thus, the invention contemplates a real-time, platform-independent, rule-based activity monitor for detecting a particular activity of interest as it occurs and for reporting such activity and the user substantially as fast.

Abstract: Methods and systems are presented for the automatic optimal placement text or symbol labels corresponding to graphical objects on maps. Using a map server and a thin, typically mobile client, maps are dynamically drawn and displayed at the client. Optimized labeling of map objects is achieved by dividing the task into pipelined subtasks, some being performed off-line, and others being performed in real time, responsively to changing client requests, and changes in the map viewport. Optimization of candidate label positions is accomplished using simulated annealing.

Abstract: A method for displaying a map on a mobile client device. The method includes storing map data on a server, the map data including road data with respect to roads of multiple different road types. The server determines a route from a starting point to a destination within an area covered by the map data, the route including one or more route segments. The server defines a corridor map including the route segments and the roads of the different road types that are within different, respective distances, determined by the road types, of the route segments. The server downloads the road data with respect to the route segments and the roads of the different road types included in the corridor map to the client device. The client device, using the downloaded road data, renders one or more images, each image comprising at least a respective portion of the corridor map.

Abstract: A method for operating a mobile computing device includes running a platform-independent application program using a virtual machine operating on the mobile computing device. A server program runs on the mobile computing device so as to access a native function of the mobile computing device that is not supported by the virtual machine. The native function is invoked from the application program by opening a communication connection to the server program using a communication application programming interface (API) of the virtual machine, and sending a message to the server program via the communication connection, so as to cause the server program to access the native function.

Abstract: A method for navigation includes storing map data on a server, the map data including vector information delineating roads in a map. A portion of the vector information corresponding to an area in which a user of a mobile client device is traveling is downloaded from the server to the client device. Approximate position coordinates of the user are found using a location providing device associated with the client device and are corrected in the client device, using the downloaded vector information, so as to determine a location of the user on one of the roads in the map. A navigation aid is provided to the user of the client device based on the determined location.