Route Evaluation Apparatus Standardizing External Navigation Data
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Solution Overview
Problem
Navigation devices struggle to fairly compare and evaluate route information acquired from external devices like third-party Web server devices and external database devices, as the information is generated using different algorithms and map data formats, making it difficult for users to assess multiple routes effectively.
Innovation Solution
A route evaluation apparatus and method that acquires, reproduces, and evaluates route information from external devices by dividing it into interval pieces based on transport means, using evaluation criteria to calculate time and distance, and combining results for display, allowing for fair comparison of routes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If route information pieces are acquired from multiple external devices using different algorithms and data formats, then the quantity and diversity of route information increases, but the difficulty of fair comparison and evaluation increases
Solution Approach 1:
The route information pieces are divided into multiple interval information pieces based on transport means changes. Each interval represents a segment of the route with consistent transport means, allowing for standardized evaluation of each segment using uniform criteria, thereby enabling fair comparison across different route options from multiple external devices.
Solution Approach 2:
The system changes the evaluation parameters by introducing standardized metrics (time and distance) that are applicable across all route information pieces regardless of their source or original format. By converting diverse route data into a common parameter framework, the system enables objective comparison and evaluation of routes from multiple external devices.
2Adaptability or versatility
If route information pieces from external devices are used directly, then the diversity of transport means coverage increases, but the consistency of evaluation criteria decreases
Solution Approach 1:
The evaluation system is designed to be universal by handling multiple transport means (walking, driving, public transportation, etc.) through a single standardized evaluation framework. The system can process and evaluate route information for various transport types using the same time and distance criteria, maintaining consistency while accommodating diversity.
Solution Approach 2:
The system applies local quality by evaluating each interval information piece according to its specific transport means characteristics while maintaining overall consistency. Each segment is evaluated with criteria appropriate to its transport type, yet all segments contribute to a unified route evaluation through standardized time and distance measurements.
3Ease of operation
If route information pieces are converted to common data format, then the ease of processing increases, but the loss of original information characteristics increases
Solution Approach 1:
The system extracts the essential evaluation-relevant information (time and distance characteristics) from the diverse route information pieces while converting them to a common format. By extracting only the critical parameters needed for comparison, the system maintains ease of processing while preserving the most important information characteristics for route evaluation.
Data Source
AI summary
A route information acquisition unit acquires a waypoint information piece including a route information piece concerning a waypoint on a route from a departure place to a destination, from each external database device. A route reproduction unit reproduces each of acquired route information pieces in the format used in a route evaluation apparatus. On the basis of the evaluation criteria stored in an evaluation criterion storage unit, a route evaluation unit generates an evaluation result by calculating a time and a distance concerning a route including the waypoint represented by the waypoint information piece, and evaluates the route information pieces. A display control unit controls a display unit such that the display unit displays the generated evaluation result.