Piezo Haptic Keyboard Mood Detection via Typing Dynamics
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Solution Overview
Problem
The challenge is to develop a thinner, more lightweight keyboard for mobile information handling systems that can monitor user typing behaviors and adapt haptic feedback based on the user's mood, as traditional keyboards are bulky and lack the ability to adjust tactile experiences dynamically.
Innovation Solution
A piezo haptic keyboard assembly with piezoelectric elements that detect mechanical stress, accumulate electric charges, and provide haptic feedback, allowing for the recording of user typing dynamics and adjusting the keyboard settings based on detected mood changes through a typing profile-based mood sensing system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If traditional keyboard structures are used, then structural stability is maintained, but keyboard thickness and weight increase
Solution Approach 1:
The patent replaces traditional mechanical keyboard structures (scissor mechanisms, rubber domes, metal plates) with a piezoelectric-based system. The piezoelectric elements serve both as structural support and as sensing/actuation components, eliminating the need for separate mechanical components. This substitution enables a thinner keyboard design while maintaining structural integrity through the piezoelectric material's inherent mechanical properties.
Solution Approach 2:
The piezoelectric elements perform multiple functions simultaneously: they provide structural support, detect typing forces through piezoelectric sensing, and generate haptic feedback through piezoelectric actuation. This multi-functionality eliminates the need for separate components for each function, reducing overall keyboard thickness and weight while maintaining all necessary capabilities.
2Adaptability or versatility
If traditional keyboards are used, then manufacturing simplicity is maintained, but ability to detect and adapt to user mood is lost
Solution Approach 1:
The system implements a closed-loop feedback mechanism where piezoelectric elements detect typing dynamics (force, speed, rhythm), the processor analyzes these patterns to determine user mood, and the system adjusts haptic feedback characteristics accordingly. This feedback loop enables mood-based adaptation without requiring complex external sensors, as the piezoelectric elements already capture sufficient typing behavior data.
Solution Approach 2:
The piezoelectric elements serve the dual purpose of both sensing typing behavior and providing haptic feedback, eliminating the need for separate sensing and actuation systems. The system uses its own operational data (typing dynamics captured during normal use) to adapt its behavior, without requiring additional external sensors or user input, thereby reducing overall system complexity.
3Adaptability or versatility
If piezoelectric elements are added for mood detection, then adaptability improves, but manufacturing complexity increases
Solution Approach 1:
The patent merges the sensing and actuation functions into a single piezoelectric element layer, eliminating the need for separate component assemblies. The piezoelectric elements are integrated directly into the keyboard structure, and the same elements used for detection are used for haptic feedback, simplifying the manufacturing process compared to systems with separate sensing and actuation components.
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 solution enables a thinner, more portable keyboard that dynamically adjusts haptic feedback to match the user's mood, improving typing efficiency and user experience by recognizing changes in typing behavior and adapting the keyboard settings accordingly.
Implementation Method 1
a piezoelectric element placed between the contact foil and support layer to receive an applied mechanical stress at the actuation location of the input actuation device. The keyboard of the information handling system may include a controller of the information handling system operatively coupled to the contact foil to receive an electric charge from the piezoelectric element placed under the mechanical stress.
Implementation Method 2
The controller may also send an electrical haptic feedback control signal to the piezoelectric element of a signal varying in polarity, voltage or current to cause the piezoelectric element to provide haptic feedback at the actuation location.
Data Source
AI summary
A typing profile based mood sensing system may comprise a processor receiving a user identification associated with a personal typing profile identifying a repeated pattern of values for a combination of previously recorded haptic hardware typing or touch behavior parameters, and a piezo haptic keyboard controller operably connected to piezo electric elements situated beneath keys of the piezo keyboard detecting current haptic hardware typing or touch behavior parameters describing deformation characteristics for the piezo electric elements. The processor may compare the user personal typing behavior profile against the current haptic hardware typing or touch behavior parameters to identify a user personal typing behavior profile value change, and associate the change with a mood-based haptic keyboard setting adjustment. The piezo haptic keyboard controller may apply the mood-based haptic keyboard setting adjustment to operation of the haptic keyboard or touchpad.