Patent ID: 8024117
Filing Date: 2011-09-20
Classification: G01C,G09B

Abstract:
1. A map display apparatus for a vehicle, the apparatus comprising: a map memory that stores map data for displaying a map; means for measuring a present position of a subject vehicle; means for performing a road estimation process to estimate in the map a road that the subject vehicle is traveling based on a present position of the subject vehicle measured by the measuring means; means for acquiring an on-road vehicle position that indicates a present position of the subject vehicle on the road estimated by the road estimation process performing means; and a display control circuit that displays in a display device a subject vehicle mark and a map surrounding the subject vehicle mark such that the subject vehicle mark is displayed on the on-road vehicle position, the display control circuit comprising: means for executing an advancement display process when a displayed map that is displayed in the display device is an enlarged map having a reduction scale greater than a predetermined reduction scale, the advancement display process displaying the subject vehicle mark on the displayed map in between the on-road vehicle position and a point that is at least one of a diverging point, a merging point, and an intersection, the point being from the on-road vehicle position a nearest point at which the subject vehicle is to turn right or left, diverge, or merge forward of the on-road vehicle position in a heading direction.