Navigation Device Intersection Name Display Positioning
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Solution Overview
Problem
Conventional navigation devices fail to clearly display intersection names on the route, often causing overlap with route lines, making it difficult for drivers to identify turning points and understand intersection locations.
Innovation Solution
A navigation device that determines the direction of turns at guidance target intersections and adjusts the display position of intersection names relative to the turn direction, ensuring they are displayed on the side opposite to the turn direction and at a distance from the route, using a determination unit, display position decision unit, and output unit to prevent overlap and maintain visibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the intersection name is displayed at a fixed position on the screen, then the name is always visible, but the name may overlap with the route line or be confused with other names
Solution Approach 1:
The patent applies local quality by dynamically adjusting the display position of intersection names based on their specific location and context. Instead of using a uniform fixed position for all intersection names, the system calculates individual display positions that avoid overlap with route lines and other names, ensuring each name is displayed in the most appropriate location for its specific situation.
Solution Approach 2:
The patent implements dynamics by making the display position of intersection names adaptive rather than static. The system continuously updates the display positions based on the current map view, route geometry, and intersection locations, allowing the names to move and adjust their positions dynamically to maintain optimal visibility without overlap.
2Loss of information
If the intersection name is displayed away from the intersection position, then overlap with route line is avoided, but the association between name and intersection position becomes unclear
Solution Approach 1:
The patent uses lead lines as intermediary elements that visually connect the intersection name to its corresponding intersection position on the map. These lead lines act as mediators that bridge the gap between the name (displayed away from the intersection to avoid overlap) and the intersection position, making the association clear and unambiguous.
Solution Approach 2:
The patent resolves the spatial conflict by utilizing an additional visual dimension - the lead line connection. Instead of relying solely on the two-dimensional placement of the name near the intersection, the system introduces a visual connector that extends in another dimension (from the name to the intersection), allowing the name to be positioned optimally while maintaining clear association through the connecting line.
3Quantity of substance
If all intersection names on the map are displayed, then complete information is provided, but the name of the guidance target intersection may not be displayed during route guidance
Solution Approach 1:
The patent extracts and prioritizes the display of the guidance target intersection name from the set of all intersection names. During route guidance, the system specifically ensures that the name of the upcoming guidance target intersection is displayed with high visibility, while other intersection names may be omitted or displayed with lower priority, ensuring the most important information is always present.
Solution Approach 2:
The patent changes the display parameters (visibility, position, size) of intersection names dynamically based on their relevance to the current guidance situation. The guidance target intersection name is assigned optimal display parameters to ensure visibility, while other names have their parameters adjusted based on their importance and spatial relationships, allowing the system to display comprehensive information when needed while ensuring critical information is always displayed.
Data Source
AI summary
A navigation device includes: an intersection attribute determination unit 731 that determines a direction of a left/right turn at a guidance target intersection on a guidance route on the basis of route information on the guidance route; a display position decision unit 732 that decides a display position for a name of the guidance target intersection on a side opposite to the direction of the right/left turn determined by the intersection attribute determination unit 731 when viewed from an entrance link to the guidance target intersection; a drawing data generation unit 733 that generates drawing data on the name of the guidance target intersection; and an image data output unit 9 that causes a display device 10 to display the drawing data generated by the drawing data generation unit 733 at the display position decided by the display position decision unit 732.