Force-Sensitive Touch Display with Multi-Level Feedback
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Solution Overview
Problem
Touch-sensitive displays on portable electronic devices face challenges in providing effective feedback and distinguishing between different functions based on varying touch forces, especially as devices shrink in size and require more efficient user input methods.
Innovation Solution
Implementing a system that uses force sensors and actuators to detect touch forces and provide tactile, visual, and audible feedback, allowing the device to perform different functions based on predefined force thresholds, enabling users to interact with the device through distinct feedback mechanisms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If touch-sensitive displays decrease in size to improve portability, then device portability is improved, but the ability to provide effective feedback and distinguish different functions based on touch force deteriorates
Solution Approach 1:
The system dynamically adjusts feedback characteristics based on detected touch force levels. Multiple feedback modes are activated depending on whether the touch force exceeds first or second thresholds, allowing the display to adapt its behavior to different user inputs while maintaining compact dimensions.
Solution Approach 2:
The patent changes the parameters of tactile feedback by varying intensity levels corresponding to different touch force thresholds. The system monitors touch force magnitude and adjusts feedback parameters accordingly, enabling distinct functional responses from a single touch interface element without requiring additional physical space.
2Productivity
If multiple functions are integrated into a single touch interface to improve efficiency, then operational efficiency is improved, but the ability to distinguish between different functions based on touch force deteriorates
Solution Approach 1:
The system implements force threshold feedback mechanisms where different tactile feedback levels are provided based on the magnitude of applied touch force. This allows users to distinguish between different functions (such as selection versus activation) through distinct feedback characteristics, enabling precise function differentiation within a unified touch interface.
Solution Approach 2:
The patent replaces traditional mechanical switches or buttons with a touch-sensitive display that uses electromagnetic sensing to detect touch force. This substitution enables multiple functions to be integrated into a single flat interface while maintaining the ability to distinguish different input forces through electronic measurement and differentiated feedback responses.
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
Enables efficient and intuitive user interaction by providing clear tactile, visual, and audible feedback, allowing the device to accurately differentiate between functions based on touch force, enhancing usability on small portable devices.
Implementation Method 1
A force sensor may be used to detect a force of the touch
Implementation Method 2
An actuator may be used to provide tactile feedback
Data Source
AI summary
Method and apparatus for displaying a view of an application on a touch-sensitive display include detecting a touch on the touch-sensitive display. When the touch is at a first force, first feedback is provided and a first function is performed. When the touch is at a second force, second feedback is provided and a second function is performed. The first function and the second function are different. The first force and the second force are different.