Piezo Actuator Tactile Feedback for Small Touchscreens
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Solution Overview
Problem
Portable electronic devices face challenges in providing effective user input and feedback due to limited space, necessitating innovative solutions for enhancing user interaction and feedback mechanisms.
Innovation Solution
The method involves displaying information on a portable electronic device's touch-sensitive display, associating active areas with search terms, and providing tactile feedback through piezo actuators, which provide vibration and pulse feedback based on relevance scores, facilitating user interaction and selection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the device size is decreased to improve portability, then the space for user input and output decreases
Solution Approach 1:
The patent introduces tactile feedback as a third dimension of interaction beyond the traditional two-dimensional touch screen. By adding vibration motors that provide tactile responses at specific locations on the display, the system creates a multi-dimensional interaction space that compensates for the limited physical input area on small devices.
Solution Approach 2:
The system implements feedback mechanisms where the display provides not only visual information but also tactile feedback through vibration motors. This feedback loop enhances user interaction by providing confirmation and guidance through touch, effectively compensating for the limited input space on compact devices.
2Ease of operation
If tactile feedback is provided at multiple locations to improve user interaction, then the complexity of the feedback system increases
Solution Approach 1:
The vibration motor system is segmented and positioned at specific locations corresponding to different content areas on the display. Each vibration motor can be independently controlled to provide location-specific tactile feedback, allowing complex interaction patterns to be achieved through modular components rather than a monolithic system.
Solution Approach 2:
Different regions of the display are associated with different vibration motors that provide location-specific tactile feedback. This local quality approach allows the system to provide differentiated tactile responses based on where the user interacts with the display, enhancing interaction without requiring uniform complexity across the entire system.
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
This solution enhances user interaction by providing clear tactile feedback, reducing the complexity of selecting information and improving the efficiency of user interaction, thereby decreasing use time and power consumption.
Implementation Method 1
providing tactile feedback through piezo actuators, which provide vibration and pulse feedback
Data Source
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AI summary
A method of controlling an electronic device includes displaying information on display of the electronic device, associating an active area with a part of the information that at least partially matches a search term, and providing tactile feedback in response to detection of the active area for the part of the information.