Patent ID: 8798903
Filing Date: 2014-08-05
Classification: G01C

Abstract:
1. A portable navigation system comprises: a display unit configured to display images for navigation operations including map images; a position measuring unit adapted to receive information about current location of a user; at least one database to store and provide maps, map attributes, road networks, geographical features, and point-of-interest (POI) information; a detecting unit communicatively coupled with the position measuring unit and the database and configured to automatically detect whether the user is entering a new city selected based on a range of population; and an information providing unit configured to produce new city information wherein the detecting unit causes to change the images on the display to a new city message screen when the user is entering a new city of the selected population range where the new city message screen is configured to allow the user to request new city information; and wherein the information providing unit causes to produce the new city information requested by the user on the display.