Timetable Generation for Arbitrary Transit Points
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Solution Overview
Problem
Existing transportation navigation systems do not provide information on the time at which public transportation vehicles pass arbitrary points along a route, such as between railway stations or bus stops, which is essential for planning construction and operations to avoid disruptions.
Innovation Solution
A timetable generating device and method that obtain location information of a specified point, identify the passage time of public transportation vehicles, and generate a timetable including this information, allowing for the output of passage times for inbound and outbound runs, as well as the latest, regular, and earliest times.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If a navigation system provides passage times only for established stations and stops, then the system complexity remains low, but the system cannot provide passage time information for arbitrary points along the route
Solution Approach 1:
The patent introduces an intermediary calculation process that uses known passage times at established stations and stops as reference points. By calculating passage times for arbitrary points based on these reference points and route characteristics, the system provides comprehensive time information without requiring direct measurement at every location, thus resolving the contradiction between information completeness and system complexity
Solution Approach 2:
The system performs preliminary calculations of passage times for arbitrary points by interpolating between known station and stop times. This preliminary action allows the system to prepare and store passage time data for any point along the route in advance, making the information readily available without complex real-time computations, thereby reducing system complexity while maintaining information availability
2Loss of information
If passage times are calculated for all points along the route, then complete time information is available, but the calculation complexity and processing time increase significantly
Solution Approach 1:
The patent divides the route into segments between established stations and stops, where passage times are already known. By performing calculations only for arbitrary points within these segments rather than for the entire route simultaneously, the system reduces calculation complexity and processing time while still providing complete time information for all requested points
Solution Approach 2:
The system calculates passage times using a simplified interpolation method that provides sufficiently accurate results for practical purposes without performing overly complex calculations. This partial action approach computes only the necessary information using efficient algorithms, avoiding excessive computation while delivering complete passage time data for arbitrary points
Data Source
AI summary
Information about a time at which a vehicle of public transportation passes an arbitrary point is provided. A timetable generating device includes: an obtaining unit which obtains location information of a specified point which is an arbitrary point along a route and for which a timetable is to be generated; a time identifying unit which identifies a passage time at which a vehicle of public transportation passes the specified point; a timetable generating unit which generates a timetable that includes the identified passage time; and a timetable outputting unit which outputs the generated timetable.