Vehicle navigation system with geographical information display controlling has region map extracting device to produce required information in shape of strip on basis of scale value determined by scale determination device

摘要

A scale determination device determines a scale so that its value of a region map in a strip of the map as a set of points long of the path. An extraction device extracts the information of region map in the shape of strip on the basis of the scale value that is determined to the scale device of the scale determination device of as being the information of region card.