Headphone Rotation Detection for Gesture Control
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Solution Overview
Problem
Existing headphones systems face challenges in accurately processing user input due to obstructive wired input elements and the inability to detect headphone rotation, which affects the interpretation of gestures in different orientations, particularly in wireless implementations.
Innovation Solution
Incorporating control circuitry and sensors, such as capacitive proximity sensors or optical sensors, into the headphones to determine the rotation of the ear pieces relative to the user's ears and detect swipe gestures on a touch interface, allowing for proper processing of user input regardless of headphone orientation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If wired input elements are used for controlling audio signal characteristics, then control functionality is provided, but the input elements become obstructive in different headphone orientations
Solution Approach 1:
The patent removes wired input elements from the headphones and replaces them with a touch interface integrated into the earpiece housing. This extraction eliminates the physical obstruction problem while maintaining control functionality through wireless touch-based input detection.
Solution Approach 2:
The touch interface is designed to detect gestures in multiple orientations by determining the rotation of the earpiece relative to the user's ear. This allows the same touch interface to function universally across different headphone wearing configurations (over-ear, in-ear, around-the-neck, etc.).
2Ease of operation
If touch interface is integrated into the earpiece, then control of audio signal characteristics is enabled, but accurate interpretation of gestures becomes difficult without detecting headphone rotation
Solution Approach 1:
The system incorporates sensors (accelerometers, gyroscopes, or capacitive proximity sensors) that continuously monitor the spatial orientation of the earpiece relative to the user's ear. This feedback information is used to dynamically adjust the interpretation of touch gestures, ensuring accurate control regardless of headphone orientation.
Solution Approach 2:
The patent changes the reference frame for gesture interpretation based on detected headphone rotation. By adjusting the parameter of gesture direction relative to the earpiece orientation rather than a fixed coordinate system, the system accurately interprets user intent across different wearing configurations.
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 intuitive control of audio signal characteristics, like volume adjustment, directly on the headphones without needing to remove a source device, ensuring consistent functionality across various wearing configurations.
Implementation Method 1
the one or more sensors comprises a plurality of capacitive proximity sensors
Implementation Method 2
the one or more sensors comprises an optical sensor
Data Source
AI summary
Some embodiments of the disclosure provide systems and methods of detecting headphone rotation to properly process user input to the headphones. The systems and methods described herein may be used, for example, to detect a gesture (e.g., a swipe) received as user input on a touch interface of the headphones, such as a touch interface integrated into an ear piece. The gesture may be made in a particular direction, such as down toward Earth. However, headphones may be worn in a plurality of configurations, such as upright with the headband around the top of the head, downward with the headband around the back of the neck, or anywhere in between. Thus, the systems and methods described herein may be used to determine the rotation of the headphones in order to properly ascertain the intended gesture and perform an intended result.