Dynamic Navigation Map Scaling for Maneuver Anticipation
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Solution Overview
Problem
Navigation devices require manual and slow adjustments between zoomed-in and zoomed-out maps, leading to inadequate route guidance, especially for upcoming maneuver points like highway exits, increasing the risk of missing important navigation cues.
Innovation Solution
A method that detects scale display events and optimally scales the navigation map by distributing navigation key points on the terminal screen, allowing users to anticipate upcoming maneuver points by displaying the navigation route at an optimal scale, and switching to a top view perspective when close to the maneuver point.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the navigation map displays at a fixed scale, then the map structure remains stable, but the user cannot flexibly adjust between wide area map and local area map, resulting in slow response
Solution Approach 1:
The patent implements dynamic map scale adjustment by automatically changing the display scale based on the vehicle's distance to the next maneuver point. The system transitions from a fixed scale to a dynamic scale that adapts to the driving context, allowing the map to automatically zoom in when approaching maneuver points and zoom out when moving away, eliminating the need for manual user operations.
Solution Approach 2:
The navigation system performs self-service by automatically adjusting the map scale without requiring user intervention. The system monitors the vehicle's position relative to maneuver points and autonomously determines the appropriate display scale, making the system serve itself rather than requiring the user to manually click zoom buttons.
2Loss of information
If the map scale is magnified only when the vehicle is about to pass a maneuver point, then detail information is clearly shown at that moment, but the user cannot know detailed route information of upcoming maneuver points in advance
Solution Approach 1:
The patent applies preliminary action by displaying detailed route information for upcoming maneuver points before the vehicle actually reaches them. The system calculates the distance to the next maneuver point and proactively adjusts the map scale to show detailed information in advance, allowing users to prepare for upcoming maneuvers rather than reacting only when the maneuver point is immediately ahead.
Solution Approach 2:
The system uses feedback by continuously monitoring the vehicle's position and distance to maneuver points, then adjusting the map display accordingly. The feedback loop ensures that the map scale is dynamically adjusted based on real-time position data, providing users with appropriate level of detail at the right moment.
3Reliability
If the navigation map shows only one navigation line on the highway, then the map display is simple, but the guidance effect is weak and users may miss important maneuver points like highway exits
Solution Approach 1:
The patent applies local quality by adjusting the map display complexity based on the local driving context. When the vehicle is approaching a maneuver point or on a highway where maneuver points are critical, the system increases the display scale to show multiple navigation lines and detailed route information. When not approaching maneuver points, the system uses a wider view. This creates different display qualities in different local contexts, improving reliability where needed without unnecessary complexity elsewhere.
Data Source
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AI summary
A method, apparatus and storage medium for controlling a navigation map. The method includes: acquiring navigation key points contained in a navigation route between a current position of a vehicle and a next maneuver point, upon detecting a scale display event; calculating an optimal scale of the navigation map, according to the navigation key points and a pixel size of a terminal screen; and navigating the navigation route according to the optimal scale. The method, apparatus and storage medium for controlling a navigation map provided by the embodiments of the present disclosure improve the guidance of the navigation map and reduce the risk of missing an intersection during driving.