Patent ID: 6728635
Filing Date: 2004-04-27
Classification: G01C

Abstract:
A landmark update system for updating landmark information to be displayed together with a route for route guidance, said system comprising:a navigation device operable to perform route guidance through the use of landmark information which is determined as the latest based on incoming landmark information over a first communication line, to increment a counter of a number of times a landmark is displayed, to calculate points based on a level of interaction between a user and the landmark, and to generate cumulative information from at least the incremented counter and the calculated points; a landmark server operable to communicate with said navigation device through communications over the first communication line, and to offer the latest landmark information which is registered; and a retailer terminal operable to register the latest landmark information to said landmark server by communicating with said landmark server over a second communication line, wherein said navigation device is operable to transfer said generated cumulative information to said landmark server over the first communication line, and wherein, based on the cumulative information transferred over the first communication line and information about the navigation device from which the cumulative information is transferred, said landmark server is further operable to generate compilation data obtained by subjecting the cumulative information to a compilation process, and to transfer the compilation data to a corresponding retailer terminal over the second communication line.