Map Display Device Position Adjustment for Road Information Overlap
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Solution Overview
Problem
Existing map display devices face difficulties in displaying road-related information at optimal positions without overlapping roads, especially when road widths change, requiring extensive updates to map data.
Innovation Solution
A map display device calculates and adjusts the display position of road-related information using shiftwidth data associated with road types and lane numbers, allowing for efficient display without overlapping roads, even when road widths change.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If road width is changed to reflect actual number of lanes, then road display accuracy is improved, but road-related information may overlap the road
Solution Approach 1:
The patent pre-calculates and stores optimal display positions for road-related information in position adjustment data, associated with each road type and number of lanes. When displaying the map, the system retrieves and applies this pre-computed position data, avoiding the need for real-time collision detection and adjustment while ensuring information does not overlap the road.
2Manufacturing precision
If map data is updated to reflect changed road widths, then road display accuracy is improved, but updating complexity increases
Solution Approach 1:
The patent separates road display data from road-related information display positions. Road width changes only affect the road geometry data, while pre-computed position adjustment data for information display remains independent. This segmentation allows road width updates without requiring comprehensive re-computation of all information display positions, reducing updating complexity.
Solution Approach 2:
The system pre-calculates position adjustment data for different road types and lane configurations during map data preparation. This preliminary computation stores optimal display positions in advance, eliminating the need for complex real-time adjustments when road widths change, thereby reducing updating complexity while maintaining display accuracy.
3Quantity of substance
If road-related information is displayed closer to the road, then map information density is improved, but information may overlap with the road
Solution Approach 1:
The patent pre-calculates optimal display positions for road-related information based on road type and number of lanes, storing these positions in position adjustment data. This allows information to be displayed as close to the road as possible without overlapping, maximizing information density while avoiding collision.
4Manufacturing precision
If entire map data is updated to adjust information positions, then information display accuracy is improved, but processing time increases
Solution Approach 1:
The patent separates road geometry data from information display position data. When road widths change, only the position adjustment data for affected road types needs updating, not the entire map data. This segmentation dramatically reduces processing time while maintaining information display accuracy.
Solution Approach 2:
The system pre-computes and stores position adjustment data for various road types and lane configurations during map data preparation. This eliminates the need for time-consuming real-time re-computation when displaying maps, reducing processing time while ensuring accurate information positioning.
Data Source
Figure 1
Figure 2A~2B
Figure 3A~3B
AI summary
A map display device that displays a map image around a vehicle position includes a display unit; a first storage unit storing map data including road data of a road and road-related information related to the road; a second storage unit storing adjustment data indicative of a relationship between display positions of the road data and the road-related information; and a map display control unit for calculating the display position of the road-related information based on the adjustment data for the individual road, and displaying the road-related information on a screen of the display unit. A road width to be displayed on the screen is determined in accordance with the number of lanes and a road type. The adjustment data is a distance between the display positions of the road and the road-related information, and is determined in accordance with the road type and the road width.