Integrated HMI With Inductive Haptic Feedback
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Solution Overview
Problem
Existing touch sensor systems lack an efficient and integrated solution for human-computer interface that combines fingerprint scanning, touch detection, and haptic feedback in a single module.
Innovation Solution
A system that includes a substrate with a multi-layer inductor, a fingerprint reader, and a controller, which integrates touch sensing, fingerprint scanning, and haptic feedback by using magnetic coupling to oscillate the substrate and provide tactile feedback.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate modules are used for fingerprint scanning, touch detection, and haptic feedback, then each function can be optimized independently, but the overall device complexity and space requirements increase
Solution Approach 1:
The patent combines fingerprint sensor, touch sensor, and haptic actuator into a single integrated module where the fingerprint sensor and touch sensor share the same substrate and the haptic actuator is positioned adjacent to both sensors, enabling all three functions to be performed through a single interface without requiring separate modules
Solution Approach 2:
The integrated module serves multiple functions simultaneously: fingerprint authentication, touch detection, and haptic feedback, allowing a single component to replace what would traditionally require three separate modules while maintaining independent optimization of each function
2Reliability
If multiple separate components are used for fingerprint scanning, touch sensing, and haptic feedback, then each component can be optimized for its specific function, but the overall system size and integration difficulty increase
Solution Approach 1:
The patent merges fingerprint sensor, touch sensor, and haptic actuator into a single integrated module with shared substrate and closely positioned components, reducing the overall system volume while maintaining the functional performance of each individual component
3Ease of operation
If multiple separate interfaces are used for fingerprint authentication, touch input, and haptic feedback, then each interface can be optimized for user interaction, but the overall device thickness and complexity increase
Solution Approach 1:
The patent combines three separate user interaction interfaces (fingerprint authentication, touch input, and haptic feedback) into a single integrated module that provides all three functions through one physical interface, thereby reducing device thickness while maintaining ease of operation for each function
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 effectively detects touch inputs, scans fingerprints, and provides haptic feedback, enhancing the human-computer interface with a compact and integrated solution.
Implementation Method 1
configured to inductively couple the first multi-layer inductor responsive to application of a force on the cover layer
Implementation Method 2
trigger a first oscillating voltage across the first multi-layer inductor during a first haptic feedback cycle to induce alternating magnetic coupling between the first multi-layer inductor and the first magnetic element and to oscillate the cover layer
Data Source
AI summary
One variation of a system includes: a substrate including an aperture and a multi-layer inductor; and a cover layer arranged over the substrate and cooperating with the aperture to define a housing. Additionally, the system includes a fingerprint reader arranged within the housing and configured to permeate through the cover layer to scan a fingerprint applied over the cover layer. A magnetic element is arranged facing the multi-layer inductor and configured to inductively couple the multi-layer inductor. The system further includes a controller configured to: read electrical values from the multi-layer inductor; and register a fingerprint input on the cover layer based on the electrical values. Additionally, the controller can: read fingerprint values from the fingerprint reader to generate a fingerprint image; and trigger a first oscillating voltage across the multi-layer inductor to oscillate the cover layer in response to the fingerprint image deviating from a target fingerprint image.