Vibration-Adaptive Touch Display for Vehicle Navigation
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Solution Overview
Problem
Existing display input devices for vehicle-mounted navigation systems face challenges in user ease of use due to vibrations, which affect accuracy and usability, particularly when the screen vibrates or the user's finger vibrates, and previous solutions either impair usability by not accounting for vibrations or fail to reflect user intention through fixed scaling.
Innovation Solution
A display input device equipped with a touch panel, vibration detection sensors, and a control unit that detects relative vibrations between the touch panel and the user's finger, automatically enlarging a display area when significant vibrations are detected, thereby enhancing usability and reflecting user intention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If an enlarged display of an icon positioned in the vicinity of the user's finger is produced, then operation mistakes can be prevented and the user can easily perform selection operations, but the ease of use is reduced as the screen vibrates because the user's finger vibrates or the vehicle is running
Solution Approach 1:
The display scale is dynamically adjusted based on detected vibration conditions. When vibration is detected, the system switches to a first scale suitable for vibration environments; when no vibration is detected, it uses a second scale for normal operation. This dynamic adaptation resolves the contradiction by optimizing display parameters according to real-time environmental conditions.
Solution Approach 2:
A vibration detection sensor provides feedback about the vibration state to the control unit, which then adjusts the display scale accordingly. This feedback mechanism enables the system to automatically adapt to vibration conditions, maintaining both ease of use and input accuracy by selecting appropriate display scales based on actual vibration levels.
2Ease of operation
If the position of the finger is too far away from the touch panel face when trying to control the scaling, then the scaling sways due to a vibration in the Z axial direction of the finger, and therefore the control operation may become difficult
Solution Approach 1:
A vibration detection sensor acts as an intermediary between the finger and the touch panel, detecting vibration conditions without requiring direct contact. This intermediary device enables the system to sense vibration states and adjust display scaling accordingly, eliminating the need for precise finger positioning while maintaining accurate vibration detection.
3Device complexity
If the scale of enlargement is fixed, then the display can be simplified, but any user's intention is not reflected
Solution Approach 1:
The display scale parameter is changed based on detected vibration conditions. The system switches between a first scale for vibration environments and a second scale for normal environments. This parameter change approach enables the system to adapt to different user intentions and environmental conditions without increasing control complexity, as the changes are automatically triggered by vibration detection.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution enables easier and more accurate user input operations during vibrations, improving user-friendliness and usability by dynamically adjusting the display scale based on detected vibrations, thus mitigating the impact of vehicle and finger vibrations on the navigation system's interface.
Implementation Method 1
a vibration detection sensor for detecting a vibration of a finger which is positioned opposite to the touch panel
Data Source
AI summary
A display input device is comprised of a touch panel 1 for carrying out a display of information and an input of information, a vibration detection sensor (proximity sensors 12 or an acceleration sensor 23) for detecting a vibration of an object to be detected which is positioned opposite to the touch panel 1, and a control unit 3 for, when it is determined that a relative vibration between the touch panel and the object to be detected, which is detected by the vibration detection sensor, has an amount equal to or larger than a predetermined amount, carrying out a process of enlarging an image in a display area having a fixed range, which is displayed on the touch panel 1, to display the enlarged image.