A METHOD AND DEVICE FOR MAP SWITCHING

摘要

A method and navigation device are disclosed for map switching. In one embodiment, the method includes receiving information of a current position and displaying map information including the current position on a navigation device; determining relative map information coverage for the current position; and switching the displayed map information to display map information of relatively more detailed coverage of the current position, upon determining that map information of relatively more detailed coverage of the current position is displayable. In another embodiment, the method includes determining a travel route based upon a travel destination input into a navigation device; displaying map information on the navigation device, conveying the determined route; receiving current position information relating to travel along the determined route; determining whether or not, based upon the current position information, travel along the route enters a region wherein the relatively more detailed map information is displayable; and switching the displayed map information to display relatively more detailed map information upon determining that travel along the route enters a region wherein the relatively more detailed map information is displayable. In at least one other embodiment, the method includes determining a travel route based upon a travel destination input into a navigation device; displaying a map on the navigation device, conveying the determined route; receiving current position information relating to travel along the determined route; determining whether or not the current position information is covered by two or more maps; and displaying the one of the two or more maps covering the current position information in relatively more detail, in place of the previously displayed map, upon determining that the current position information is covered by two or more maps.