Dynamic Map Label Density and Placement for Navigation Displays
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Solution Overview
Problem
Conventional navigation solutions face limitations in map display optimization, either presenting an uncluttered map with minimal information or a cluttered map with excessive details due to static label density, which restricts the number of road labels based on zoom level and only shows labels for roads intersecting the current route.
Innovation Solution
Dynamically varying label density and placement on a map display based on the function class of navigated and upcoming roads, distance to a maneuver, and device speed, allowing for flexible presentation of road labels that adapt to user needs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If static label density is used to limit the number of road labels on map display, then map display clutter is reduced, but information completeness deteriorates
Solution Approach 1:
The patent applies dynamics by transitioning from static label density to dynamic label density that automatically adjusts based on real-time navigation context. The system monitors device speed, upcoming maneuvers, and road function classes, then dynamically varies the number and placement of road labels accordingly. This allows the map display to adapt its information density to current conditions, showing more labels when appropriate (e.g., before maneuvers or on high-function roads) and fewer labels when clutter would be problematic, thereby resolving the contradiction between information completeness and display clarity.
Solution Approach 2:
The patent implements parameter changes by modifying the label density parameter dynamically rather than using a fixed static value. The system changes the number of road labels displayed based on multiple parameters including device speed, distance to upcoming maneuvers, and road function classes. This dynamic parameter adjustment enables the system to optimize the balance between providing sufficient road information and avoiding display clutter, directly addressing the technical contradiction between information completeness and display clarity.
2Device complexity
If road labels are restricted to roads intersecting current route, then map display simplicity is improved, but navigation information completeness deteriorates
Solution Approach 1:
The patent applies local quality by differentiating the treatment of different road labels based on their relevance to the current navigation context. Rather than uniformly displaying all road labels or restricting to only intersecting roads, the system selectively displays labels based on local conditions such as upcoming maneuvers, road function classes, and device speed. This localized approach ensures that road information is displayed where it is most relevant to the user's navigation needs, improving information completeness without uniformly increasing display complexity.
Solution Approach 2:
The patent implements preliminary action by proactively displaying road labels for upcoming maneuvers before they occur. The system detects upcoming maneuvers and preemptively displays relevant road labels in advance, ensuring that navigation information is available when needed. This preliminary display of critical road information reduces the need for complex real-time label selection and improves navigation information completeness while maintaining reasonable display simplicity.
3Loss of information
If label density is increased to show more road information, then information completeness is improved, but map display clutter increases
Solution Approach 1:
The patent resolves this contradiction by implementing dynamic label density that automatically adjusts based on real-time navigation conditions. The system monitors device speed, upcoming maneuvers, and road characteristics, then dynamically varies the number of road labels displayed. When conditions warrant (e.g., approaching a maneuver, traveling on high-function roads), the system increases label density to improve information completeness. When conditions suggest clutter would be problematic (e.g., low speed, non-critical roads), the system reduces label density to maintain display clarity, thus dynamically balancing information completeness against clutter.
Solution Approach 2:
The patent applies parameter changes by dynamically modifying the label density parameter based on multiple navigation-related parameters including device speed, distance to maneuvers, and road function classes. This dynamic parameter adjustment enables the system to optimize the balance between providing comprehensive road information and avoiding display clutter. The system continuously adapts the label density parameter to current conditions, ensuring that information completeness is improved when needed without causing unacceptable clutter, directly resolving the technical contradiction between these two opposing requirements.
Data Source
AI summary
Methods for dynamically varying label density and label placement on a map display used in mapping and/or navigation solutions. Label density and label placement on a map display are adjusted dynamically based on: a function class of a road being navigated, a function class of a road to be navigated following an upcoming maneuver, a distance to an upcoming maneuver, and/or a speed a device receiving mapping/navigation services is travelling.