Adaptive Keyboard Haptics Using Electroactive Snapover Feedback
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Solution Overview
Problem
Traditional keyboards lack effective methods to simulate haptic feedback for non-traditional keyboard techniques that do not employ rubber dome assemblies, as the haptic feedback on these keyboards depends on the position and speed of key depression, which is inherent in the movement of the key assembly.
Innovation Solution
A keyboard system utilizing an electrically-deformable material as an actuating mechanism to provide single or multi-vectored movement to the key or keyboard element, simulating a 'snapover' effect by detecting key actuation and adjusting drive parameters based on user input or actuation data, allowing for adaptive haptic feedback.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional rubber dome assemblies are used to provide haptic feedback, then the snapover effect is achieved, but the keyboard cannot provide adaptive haptic feedback for non-traditional keyboard techniques
Solution Approach 1:
The patent replaces the traditional mechanical rubber dome assembly with an electrically-deformable material actuator that can be controlled electronically. This substitution allows the keyboard to provide adaptive haptic feedback through electrical control rather than relying solely on mechanical properties, enabling non-traditional keyboard techniques to achieve snapover effects.
Solution Approach 2:
The patent implements dynamic control of haptic feedback by adjusting drive parameters in real-time based on detected actuation characteristics. The system adapts the snapover effect dynamically by modifying the electrical deformation of the actuator according to the speed and position of key depression, enabling versatility across different keyboard techniques.
2Adaptability or versatility
If haptic feedback is inherent in the movement of the key assembly, then the snapover effect correlates with typing speed, but non-traditional keyboard techniques cannot simulate this feedback
Solution Approach 1:
The patent implements a feedback mechanism where the system detects key actuation characteristics (such as switch closure timing and actuation speed) and uses this information to adjust the haptic feedback response. This closed-loop approach allows non-traditional keyboard techniques to achieve adaptive snapover effects that correlate with typing speed, improving compatibility while maintaining operational simplicity.
Solution Approach 2:
The patent introduces an electrically-deformable material actuator as an intermediary between the key switch and the haptic feedback mechanism. This intermediary component translates electrical signals into mechanical movement, enabling flexible control of the snapover effect for various keyboard techniques while keeping the overall system relatively simple.
3Speed
If the key assembly movement provides haptic feedback, then the feedback speed matches the key depression speed, but this approach does not work for non-traditional techniques without rubber domes
Solution Approach 1:
The patent replaces the mechanical rubber dome assembly with an electrically-deformable material actuator that can be controlled electronically. This substitution allows the keyboard to provide adaptive haptic feedback through electrical control rather than relying solely on mechanical properties, enabling non-traditional keyboard techniques to achieve snapover effects.
Solution Approach 2:
The patent changes the physical state or properties of the actuating mechanism by using an electrically-deformable material whose characteristics can be modified through electrical parameters. By adjusting voltage, current, or pulse duration, the system can control the speed and intensity of the snapover effect independently of the key assembly's mechanical movement, achieving feedback speed correlation without traditional mechanical constraints.
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 system dynamically imparts haptic feedback that simulates the traditional 'snapover' effect, accommodating user preferences and typing speed, by adjusting movement duration and direction, providing a customizable and adaptive haptic experience.
Implementation Method 1
an electrically-deformable material is utilized as an actuating mechanism to impart single or multi-vectored movement to the key or keyboard element
Data Source
AI summary
Various embodiments provide a keyboard that adaptively provides haptic feedback to a user. In at least some embodiments, an actuation of a key or keyboard element of the keyboard is detected. This can be accomplished by detecting the closure of an associated switch caused by a user depressing the key or keyboard element. In response to detecting the actuation, an electrically-deformable material is utilized as an actuating mechanism to impart single or multi-vectored movement to the key or keyboard element according to drive parameters. This movement produces a perceived acceleration of the key or keyboard element, thus providing haptic feedback which simulates a “snapover” effect.