Patent ID: 8072354

Claim:
A method of updating map data of a navigation device configured to be installed in one of a mobile terminal and a motor vehicle, comprising: receiving information relating to an area update of the map data from a data server via a wireless broadcast to the navigation device; and displaying the information in graphical form on a map displayed on a display screen, wherein the step of displaying the information in graphical form comprises displaying, on a first area of the map corresponding to the area update, a changed area icon, while simultaneously displaying an icon-free second area of the map corresponding to an area not addressed in the area update, and wherein the method further comprises: receiving a user input to the changed area icon to select the first area of the map corresponding to the area update; wirelessly transmitting to the data server a map update request that includes information identifying the first area; wirelessly receiving version information of available map data corresponding to the first area from the data server; comparing the version information of the available map data with version information of previously stored map data corresponding to the first area; receiving updated map data when a version of the available map data is newer than a version of the previously stored map data; and updating at least one of the changed area icon and the icon-free second area on the map based on the updated map data.