Map Display Control Device Haptic Feedback for Priority Object Navigation
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Solution Overview
Problem
Navigation devices struggle to facilitate user operations when scrolling maps that do not contain the expected travel route, leading to confusion about positional relationships, as existing techniques are designed for scrolling along expected routes and lack intuitive methods for navigating away from them.
Innovation Solution
A map display control device with a priority object setting unit, operating feel controller, and scroll processor that differentiates the feel of scrolling towards a priority object from other directions, using haptic feedback and tactile sensations to guide the user towards the object of interest.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the user scrolls the map to display areas away from the expected travel route, then the user can access maps containing objects of interest, but the user becomes confused about the positional relationship between the current map and the expected travel route
Solution Approach 1:
The operating feel controller provides haptic feedback to the operation lever based on the positional relationship between the displayed map and the expected travel route. When the priority object (expected travel route) is located outside the displayed map, the system generates a reaction force that guides the user to scroll in the direction toward the priority object, providing continuous feedback about the spatial relationship without requiring the user to mentally track positions
Solution Approach 2:
The system changes the operating parameters of the operation lever dynamically based on map content. When the priority object is outside the displayed area, the reaction force characteristics of the operation lever are modified to provide directional guidance, making the lever easier to operate in the direction toward the priority object and stiffer in other directions
2Ease of operation
If the user performs multiple scroll operations to restore the map containing the expected travel route, then the user can return to the original view, but the user's understanding of positional relationship becomes increasingly confused
Solution Approach 1:
The haptic feedback system continuously provides directional guidance during scroll operations by adjusting the reaction force of the operation lever. This feedback mechanism reduces the cognitive load required to track positional relationships, as the physical feedback from the lever naturally guides the user back to the expected travel route without requiring mental calculation of scroll distances or directions
3Loss of information
If the map scrolling speed is reduced to make information visible, then the user can see place information during scrolling, but the scrolling operation becomes time-consuming
Solution Approach 1:
The haptic feedback is applied locally to the operation lever in a targeted manner. Rather than uniformly slowing down the entire scrolling process, the system provides localized directional guidance through the operation lever's reaction force, allowing the user to quickly and intuitively scroll toward the priority object without unnecessary delays
Data Source
AI summary
In a map display apparatus, a display processor causes a display to display a map based on map information. A priority object setting unit determines a priority object having higher priority than other objects contained in the map. A scroll processor scrolls the map displayed on the display in step with a scroll operation performed by a user. In a case where the priority object is located outside the map displayed on the display, the operating feel controller adds directivity to an operating feel imparted to the scroll operation in such a manner that a scroll operation for scrolling the map toward the priority object and a scroll operation for scrolling the map in any other direction arouse different operating feels.