Piezo Actuator Tactile Feedback for Mobile Displays
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Solution Overview
Problem
Current mobile devices rely on audible feedback for user input, which can be distracting and nuisance-inducing in public settings, and existing solutions for haptic feedback lack the ability to provide nuanced tactile experiences for social media interactions.
Innovation Solution
A system that integrates a touch screen device with a processor, transceiver, and tactile feedback generator using piezo actuators to produce customized tactile and acoustic outputs, allowing for simulated experiences associated with user interface elements, such as social media interactions, by generating and encoding tactile effects that can be stored, transmitted, and outputted.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If audible feedback is used for user input confirmation, then user feedback is provided, but it causes distraction and nuisance in public settings
Solution Approach 1:
The patent replaces the acoustic feedback system with a haptic feedback system using piezoelectric actuators. Instead of using sound waves to confirm user input, the system uses mechanical vibrations and tactile sensations through the display surface, substituting one physical domain (acoustic) with another (mechanical/haptic) to eliminate public nuisance while maintaining feedback functionality.
Solution Approach 2:
The display surface acts as an intermediary medium that transfers tactile sensations from the piezoelectric actuators to the user's finger. This intermediary mechanism allows feedback to be conveyed through the touch interface itself, providing confirmation without requiring audible output that would disturb others.
2Ease of operation
If standard haptic feedback is used, then tactile confirmation is provided, but nuanced tactile experiences for social media interactions are lacking
Solution Approach 1:
The patent implements different haptic feedback patterns for different regions and functions within the display interface. Specific piezoelectric actuators are triggered based on which area of the display is touched and what operation is being performed, allowing each interaction context to have its own customized tactile signature. This enables nuanced feedback for social media interactions versus other applications.
Solution Approach 2:
The haptic feedback system dynamically adjusts its characteristics based on the interaction context. The control circuitry analyzes the touch input and generates appropriate piezoelectric actuation patterns in real-time, allowing the tactile feedback to adapt to different social media interactions such as liking, commenting, or sharing, providing versatile and context-appropriate feedback.
3Adaptability or versatility
If piezoelectric actuators are integrated into the display, then customized tactile feedback is enabled, but device complexity increases
Solution Approach 1:
The patent merges the piezoelectric actuators with the display structure itself, integrating the haptic feedback generation components directly into the display assembly. This consolidation approach allows the actuators to share space and structural elements with the display, reducing overall device complexity compared to adding separate haptic feedback mechanisms.
Solution Approach 2:
The display surface serves multiple functions: visual information display, touch input detection, and haptic feedback output. By making the display multi-functional, the patent eliminates the need for separate dedicated haptic feedback components, thereby reducing device complexity while still enabling customized tactile feedback through the piezoelectric actuators.
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 discreet and nuanced tactile feedback for mobile devices, enhancing user interaction with social media and other applications by providing personalized haptic responses that are not audible, thus reducing distractions and improving user engagement.
Implementation Method 1
a tactile feedback generator configured to generate a tactile feedback in response to the touch input
Data Source
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AI summary
An apparatus comprising: a receiver configured to receive data for at least one user interface element to be displayed on a displayed user interface at a location on a display and a tactile feedback signal indicator associated with the at least one user interface element; a touch sensor configured to determine at least one touch location corresponds to the at least one user interface element location of the displayed user interface; and a tactile effect generator configured to generate a tactile feedback signal to be output by the display dependent on the displayed user interface and based on the tactile feedback signal indicator such that the at least one user interface element provides a simulated experience.