Map display apparatus for vehicle
First Claim
Patent Images
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.
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Abstract
A remaining distance to an intersection regarded as a guide point is calculated based on map matching process. When the remaining distance is decreased to less than or equal to 100 m, an advancement display process is executed to advance a display position of a vehicle mark of the subject vehicle in the forward direction ahead of the map matched position. The vehicle mark is thus displayed, in an enlarged view of the guide point, at a position corresponding to an advanced display remaining distance, which is calculated using a predetermined formula.
8 Citations
7 Claims
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1. A map display apparatus for a vehicle, the apparatus comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification