Map Information Display Apparatus Transit Time Point Distribution
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Solution Overview
Problem
Existing map information display systems face issues with displaying estimated transit times in a way that is easily viewable, particularly when transit time display points concentrate, making it difficult for users to recognize corresponding actual positions on a map, and limiting the number of display points can lead to overlapping and decreased viewability.
Innovation Solution
A map information display apparatus that divides the map area into group areas, limits the number of transit time display points within each area, and selects points based on spatial density and impression value to ensure scattered distribution and improved recognition of corresponding actual positions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If transit times of all main intersections on the map are displayed, then the user can obtain comprehensive transit time information, but the number of displayed transit times increases and display positions become dense, which hinders the user's understanding
Solution Approach 1:
The patent divides the map display area into multiple group areas and selects transit time display points from each group area separately. This segmentation approach ensures comprehensive coverage of transit time information across different regions while preventing concentration of display points in any single area, thereby maintaining both information completeness and display viewability
Solution Approach 2:
The patent applies different selection criteria to different group areas based on their spatial density characteristics. By evaluating spatial density within each local group area and selecting points accordingly, the system optimizes display distribution locally while maintaining global information coverage, resolving the contradiction between comprehensive information display and viewability
2Ease of operation
If the number of positions for which transit times are displayed is limited to a predetermined number, then the display becomes more viewable, but transit time display positions concentrate in certain areas, making it difficult for users to recognize positions other than the concentrated area
Solution Approach 1:
The patent segments the map into multiple group areas and performs transit time point selection within each segment. This ensures that limited display points are distributed across different regions rather than concentrating in one area, maintaining both viewability and information coverage
Solution Approach 2:
The patent introduces a spatial distribution dimension by dividing the map into multiple group areas. Instead of selecting points solely based on numerical limits, the system considers the spatial distribution across different group areas, effectively adding a dimensional constraint that prevents concentration and ensures broader coverage
3Device complexity
If transit time display points are selected without considering spatial density, then the selection process is simple, but display positions become dense in certain areas, preventing users from estimating transit times in other regions
Solution Approach 1:
The patent evaluates spatial density within each local group area and uses this local characteristic to guide point selection. By considering spatial density at the local level rather than applying a uniform selection criterion globally, the system maintains relatively simple processing while achieving balanced distribution and preventing information loss
Data Source
AI summary
A map information display apparatus that displays a map for a mobile object includes: a grouping unit (111) that divides a map included in an image displayed by a map display unit (115) into a plurality of areas; a display position determination unit (113) that selects, for each of the plurality of areas, at most a predetermined number of points as points for displaying estimated transit times, the predetermined number being equal to or larger than 1; a time calculation unit (114) that calculates the estimated transit times of the selected points; and the map display unit (115) that displays an image including the map and the estimated transit times.