Pressure-Sensing Touch Input With Vibration Feedback
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Solution Overview
Problem
Users of input apparatuses based on pressure loads face challenges in accurately adjusting pressure, leading to unintentional inputs due to variability in fine pressure adjustment skills among individuals, resulting in erroneous operations.
Innovation Solution
An input apparatus equipped with a touch face, load detection unit, and vibration unit, where the control unit receives inputs only when a standard pressure load is detected and vibrates the touch face to notify the user of pressure changes, preventing unintentional inputs by alerting the user to pressure misadjustments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If pressure-based input apparatus is used to enable multiple operations with one key, then operational efficiency is improved, but user error increases due to difficulty in fine pressure adjustment
Solution Approach 1:
The vibration unit provides tactile feedback to the user when the detected pressure load matches a predetermined standard load. This feedback mechanism allows users to adjust their pressure application in real-time based on the vibration signal, ensuring accurate input registration while maintaining the efficiency benefits of pressure-based multi-operation capability.
2Device complexity
If multiple operations are assigned to different pressure levels on one key, then device complexity is reduced, but ease of operation deteriorates due to skill variability
Solution Approach 1:
The vibration feedback mechanism compensates for user skill variability by providing an objective reference signal. When the pressure load matches the predetermined standard, the vibration unit activates, guiding users to the correct pressure level regardless of their individual fine-adjustment skills. This maintains simplicity in key structure while improving ease of operation.
3Ease of operation
If pressure threshold is set low to detect light touches, then ease of operation is improved, but reliability worsens due to unintentional inputs
Solution Approach 1:
The vibration unit provides confirmation feedback only when the pressure load matches the predetermined standard load threshold. This ensures that light touches below the threshold do not trigger unintended inputs, while still maintaining ease of operation by clearly indicating when the correct pressure level is achieved through vibration feedback.
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 apparatus effectively prevents unintentional inputs by notifying the user of pressure load changes, ensuring accurate and intended operations by providing tactile feedback through vibration.
Implementation Method 1
a load detection unit configured to detect a pressure load of the touch operation to the touch face
Implementation Method 2
a vibration unit configured to vibrate the touch face
Data Source
AI summary
An input apparatus capable of preventing a user's unintentional input by notifying the user of a change in a pressure load is provided.The input apparatus has a touch face configured to receive a touch operation, a load detection unit configured to detect a pressure load of the touch operation to the touch panel, a vibration unit configured to vibrate the touch face, and a control unit, when the load detection unit detects a pressure load satisfying a standard load to receive an input, configured to perform a control to receive the input by the touch operation. When the load detection unit detects a pressure load satisfying a standard load, lower than the standard load to receive an input, the control unit controls the vibration unit to vibrate.