SERVER-BASED NAVIGATION SYSTEM HAVING DYNAMIC TRANSMITTAL OF ROUTE INFORMATION

摘要

A navigation system (20) having a client device (22a-22n) and a service center(24). The client device (22a-22n) includes a memory having a memory limit. The service center (24) receives a starting point and a destination point and calculates a route. The service center (24) further is capable of generating and transmitting data associated with the calculated route to the client device (22a-22n). However, before transmitting the data, the service center (24) makes a determination whether the size of the data associated with the calculated route is greater than the memory limit of the memory in the client device (22a-22n). If so, the data associated with the calculated route is transmitted to the client device (22a-22n) in a plurality of segmented data files, each at a different time. The division of data may take a variety of forms including a division by geographic area.