Earbud Electrode Assembly for Biosignal Gesture Control
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Solution Overview
Problem
Existing methods for controlling electronic devices are cumbersome and inefficient, and there is a need for more intuitive and discreet control schemes, especially for individuals with disabilities or injuries, which traditional input devices cannot adequately address.
Innovation Solution
Earbuds equipped with electrodes that physically contact specific anatomic locations on the ear to detect electrophysiologic signals, such as ECG, EEG, or EMG, to determine user gestures and control external devices like virtual reality headsets.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional input devices are used to control electronic devices, then control functionality is provided, but the control method becomes cumbersome and inefficient
Solution Approach 1:
The patent replaces traditional mechanical input devices (keyboards, mice, buttons) with a biosignal-based control system. Electrophysiologic sensors detect electrical signals from the user's body (such as muscle contractions or nerve impulses) to control electronic devices, eliminating the need for manual manipulation of physical controls and enabling more intuitive and efficient interaction.
2Adaptability or versatility
If head-mounted sensors are used for gesture detection, then gesture control capability is provided, but the device causes discomfort and is less portable
Solution Approach 1:
The patent transitions the sensor placement from the head-mounted dimension to the earbud dimension. By positioning electrophysiologic sensors in the ear canal or on the ear surface, the system maintains gesture detection capability while significantly improving comfort and portability. The earbud form factor allows for discreet, lightweight sensing without the bulk and discomfort of head-mounted equipment.
3Ease of operation
If distant sensors are used for gesture detection, then device portability is improved, but signal quality and accuracy deteriorate
Solution Approach 1:
The patent applies local quality by positioning sensors in close proximity to the target signal source (electrophysiologic signals from the ear or nearby body parts). The earbud placement ensures optimal signal capture at the source, maintaining high measurement precision. This localized sensing approach allows the use of smaller, more portable devices without sacrificing signal quality, as the sensors are strategically positioned where the strongest signals originate.
4Measurement precision
If multiple electrodes are added to improve gesture detection accuracy, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The patent implements multi-functionality by designing electrodes that serve multiple purposes simultaneously. The same electrodes used for detecting electrophysiologic signals also function as reference points for gesture detection, noise cancellation elements, and potential health monitoring sensors. This universal approach allows for improved measurement precision without proportionally increasing device complexity, as single components perform multiple functions.
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
Provides a convenient, hands-free, and accurate means of controlling electronic devices through subtle gestures, enhancing user interaction and accessibility for individuals with disabilities.
Implementation Method 1
receive an electrophysiologic measurement from each of the first electrode, the second electrode, and the third electrode
Data Source
AI summary
Systems and methods for controlling devices through gestures sensed via an earbud. The earbud can include a set of electrodes configured to contact particular anatomic locations on an individual's ear. Based on electrophysiologic signals sensed via the electrode assembly, the system can identify gestures being performed by the user and control the external device accordingly.