In-Vehicle Navigation Route Estimation with Real-Time Traffic
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional navigation apparatuses fail to notify users of increased traveling time due to congestion or other factors, as they primarily rely on travel frequency data without considering real-time traffic conditions.
Innovation Solution
An in-vehicle system that includes a map information storage unit, communication control unit, travel history database, route estimation unit, traveling time calculation unit, and display control unit, which acquires traffic information, estimates travel routes, calculates actual and predicted traveling times, and displays this information on a map screen.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the navigation apparatus uses travel frequency data to determine the optimum route, then the route calculation is simple and based on historical data, but the system cannot detect real-time traffic conditions and notify users of increased traveling time
Solution Approach 1:
The patent combines historical travel frequency data with real-time traffic information to create a comprehensive route evaluation system. The navigation apparatus merges data from the travel history database with current traffic conditions from external sources, allowing it to both use historical patterns and detect real-time changes in traffic conditions.
Solution Approach 2:
The system implements feedback by continuously comparing predicted traveling time (based on historical data) with actual traveling time (based on real-time traffic conditions). When the actual time exceeds the predicted time by a threshold, the system notifies the user, creating a closed-loop feedback mechanism that adapts to changing traffic conditions.
2Loss of information
If the navigation apparatus only displays the travel route on the map screen, then the display is simple, but the user cannot see the difference between actual and predicted traveling times
Solution Approach 1:
The patent adds temporal dimension to the spatial map display by overlaying traveling time information onto the route visualization. The display shows not just the spatial path but also the time characteristics (actual vs predicted traveling time) as additional dimensional information, allowing users to perceive both space and time aspects of the journey.
Solution Approach 2:
The system uses visual differentiation (such as color changes or distinct markings) to represent different traveling time characteristics on the map screen. The display visually distinguishes between segments of the route based on whether they are within predicted time or exceed it, providing intuitive visual feedback about time variations without requiring complex numerical displays.
Data Source
AI summary
An in-vehicle apparatus mounted in a vehicle includes: a map information storage unit that stores map information; a communication control unit that acquires traffic information; a travel history database in which a travel history of the vehicle with respect to each road is recorded; a route estimation unit that estimates a travel route of the vehicle by using the map information and the travel history database; a traveling time calculation unit that calculates actual traveling time of the vehicle with respect to the travel route and calculates predicted traveling time required when traveling the travel route estimated by the route estimation unit by using the traffic information; and a display control unit that performs control to display a map screen indicating the travel route and display the actual traveling time and the predicted traveling time together with the map screen.