Map display device e.g. for hand-held map reader or for automobile onboard navigation device, uses azimuth detector for correction of stored map information

摘要

The map display device (20) incorporates an azimuth detector with an azimuth measuring range divided into a number of equal parts, the map information corrected when the output of the azimuth detector alters over the surface of each part, the displayed map direction coinciding with the half angle or the symmetry lines of the equal parts and indicated in visual form.