Vehicle Navigation Device Post-Alighting Guidance
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Solution Overview
Problem
Existing navigation systems fail to provide users with adequate guidance when they need to find alternative parking spaces near a destination, especially in unfamiliar areas, leading to frustration and difficulty in determining the best route after alighting from the vehicle.
Innovation Solution
A vehicle navigation device that displays post-alighting guidance information on an in-vehicle display unit, including the time and direction to the destination by walking, biking, or using wheelchairs, Ultra Lightweight Vehicles, without requiring user operation, and adjusts display modes based on vehicle speed and location proximity to the destination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the navigation system uses a portable terminal to determine parking lot and provide walking navigation, then the user can access navigation information, but the user has to take out the portable terminal every time to input new parking space information or view the map, causing user frustration
Solution Approach 1:
The patent merges the navigation functionality from a portable terminal into the in-vehicle navigation device. The display control unit integrates post-alighting guidance information (walking routes, required time periods, directions) directly into the vehicle's display system, eliminating the need for users to switch between devices and providing a unified navigation experience.
Solution Approach 2:
The display control unit acts as an intermediary that receives destination information from the acquisition unit and automatically generates and displays post-alighting guidance information. This intermediary function eliminates the need for manual input by the user, as the system automatically calculates and presents routing information for various post-alighting transportation forms.
2Loss of information
If the navigation system does not provide post-alighting guidance information, then the system remains simple, but the user cannot determine whether to use the parking space or knows the direction to go after alighting
Solution Approach 1:
The system performs preliminary calculation and preparation of post-alighting guidance information before the user actually needs it. The display control unit automatically generates routing information for walking, bicycles, wheelchairs, and Ultra Lightweight Vehicles based on the destination and assumed alighting location, so that all necessary guidance is ready and displayed when the user arrives at the parking space.
Solution Approach 2:
The navigation system provides universal guidance information that covers multiple post-alighting transportation forms (walking, bicycles, wheelchairs, Ultra Lightweight Vehicles). The display control unit calculates and displays appropriate routing information for each transportation type, making the system adaptable to various user needs and physical conditions without requiring separate systems for each mode.
3Reliability
If the system provides comprehensive post-alighting guidance information, then the user can easily determine parking spaces and navigate after alighting, but the display unit must process and show multiple types of information
Solution Approach 1:
The display control unit provides differentiated guidance information based on the specific transportation form and user needs. Rather than displaying all possible information simultaneously, the system tailors the displayed content to the assumed alighting location and relevant transportation modes, presenting localized and context-appropriate guidance that reduces display complexity while maintaining reliability.
Data Source
AI summary
The vehicle navigation device guides a user of a vehicle to a destination. The vehicle navigation device includes a car navigation system that acquires the destination, a head-up display that displays various information, and a body ECU that controls the information displayed on the head-up display based on the destination acquired by the car navigation system. The body ECU is configured to cause, on the assumption that the user alights from the vehicle at a current location, the head-up display to display post-alighting guidance information which is information for guiding the user to the destination regarding, for example, walking.