Navigation System Schematic Maneuvering Image for Complex Intersections
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Solution Overview
Problem
Conventional navigation systems often fail to provide unambiguous orientation in complex road situations, particularly at intersections and traffic circles, as they only display roads and junctions along the route, leading to user confusion and inadequate maneuvering instructions.
Innovation Solution
The method expands the analysis of the surrounding road situation by incorporating adjacent junctions and road segments not on the route into the computation of the schematic maneuvering image, including all road segments and junctions of traffic circles, and using simplified geometric representations to intuitively illustrate the traffic circle configuration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If only road segments and junctions along the route are displayed in the schematic maneuvering image, then the computation process is simplified and faster, but the orientation for users becomes ambiguous in complex road situations
Solution Approach 1:
The patent applies local quality by selectively displaying different levels of road network detail in different regions of the schematic maneuvering image. Roads and junctions along the route are displayed with full detail, while adjacent roads and junctions are displayed with reduced detail or omitted, creating a focused view that provides sufficient orientation information without excessive computational load.
Solution Approach 2:
The patent segments the road network display into three categories: roads and junctions along the route (displayed in full), roads and junctions adjacent to the route (displayed with reduced detail), and other roads and junctions (omitted). This segmentation allows the system to provide adequate orientation information for complex intersections while maintaining computational efficiency.
2Loss of information
If adjacent junctions and road segments not on the route are incorporated into the schematic maneuvering image, then unambiguous orientation is provided in complex road situations, but the computation process becomes more complex and time-critical
Solution Approach 1:
The patent applies local quality by selectively displaying different levels of road network detail in different regions of the schematic maneuvering image. Roads and junctions along the route are displayed with full detail, while adjacent roads and junctions are displayed with reduced detail or omitted, creating a focused view that provides sufficient orientation information without excessive computational load.
Solution Approach 2:
The patent applies partial action by incorporating only the necessary adjacent junctions and road segments into the schematic maneuvering image computation. Instead of displaying the entire road network, the system computes and displays only the portion needed for unambiguous orientation at complex intersections, avoiding unnecessary computational complexity.
3Ease of operation
If schematic maneuvering images display only route-related roads, then the image remains simple and easy to interpret, but users cannot recognize the correct maneuvering instructions in confusing intersections
Solution Approach 1:
The patent segments the road network display into three categories: roads and junctions along the route (displayed in full), roads and junctions adjacent to the route (displayed with reduced detail), and other roads and junctions (omitted). This segmentation allows the system to provide adequate orientation information for complex intersections while maintaining computational efficiency.
Solution Approach 2:
The patent applies asymmetry by creating a non-uniform display where roads and junctions along the route are displayed with full detail and prominence, while adjacent roads and junctions are displayed with reduced detail. This asymmetric display emphasizes the correct maneuvering path while still providing sufficient context for unambiguous orientation at complex intersections.
Data Source
AI summary
A method for operating a navigation system includes the following steps:a) computing a route from a starting point to a destination, wherein the route consists of a sequence of road segments and junctions between the road segments that is selected from a database, in which a geographic area is described in the form of road segments and junctions, with a route computation method,b) computing at least one maneuvering instruction that contains instructions for the user in order to follow the route from the current position, andc) computing and displaying a schematic maneuvering image on a display device, wherein the schematic maneuvering image graphically illustrates the maneuvering instructions in schematic form, wherein adjacent junctions that do not lie along the route and/or adjacent road segments that do not lie along the route and do not converge with a junction along the route are also analyzed during the computation of the schematic maneuvering image, wherein at least part of the adjacent road segments and/or adjacent junctions is illustrated in the schematic maneuvering image in addition to the maneuvering instruction that represents the route.