Patent ID: 7359798

Claim:
A method of controlling display of a map, in which based on a designation of a map display area desired to be displayed on a display screen, a corresponding map and a position of a facility included in the map display area are displayed, the method comprising: an identifier adding step for, in response to an instruction of zoom display of a map corresponding to a first area that is currently displayed, in order to distinguish point information associated with a first point existing in an area of a map corresponding to a second area to be zoomed from point information associated with a second point excluded from the second area to be zoomed in the map corresponding to the first area, adding to each piece of point information an identifier indicating whether or not a point is in a position in the second area; and a display step for displaying the map corresponding to the second area to be zoomed within the display screen, the point information associated with the first point in a position for indicating the first point included in the second area, and the point information associated with the second point excluded from the second area in a position for indicating a direction of the second point in a periphery of the map corresponding to the second area.