Headphone Orientation Detection via Sensor-Based Signal Mixing
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Solution Overview
Problem
Users often wear headphones or earbuds incorrectly, leading to reversed stereo channels, especially in wireless models with symmetric designs, causing audio misalignment with visual content in surround sound scenarios.
Innovation Solution
Incorporating sensors in earpieces to automatically detect their orientation and switch audio signals accordingly, using a detector coupled with a signal mixer to ensure correct audio input delivery to each earpiece, with optional user input for confirmation and error handling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If wireless headphones or symmetric headphones are designed to be compact and wireless, then portability and convenience are improved, but the ability to visually identify correct orientation is lost
Solution Approach 1:
The headphones automatically detect their own orientation using sensors (proximity sensors, accelerometers, gyroscopes) and autonomously switch audio channels without requiring user intervention or visual identification. The system serves itself by detecting ear placement and automatically configuring audio output.
Solution Approach 2:
The patent replaces mechanical/visual identification methods (labels, asymmetric designs) with electronic sensing systems. Sensors detect ear placement characteristics and automatically determine orientation, substituting the need for visual inspection or physical asymmetry with electronic detection and processing.
2Ease of manufacture
If headphones are designed with symmetric ear cups, then manufacturing simplicity and cost are improved, but the ability to distinguish left and right ear cups is lost
Solution Approach 1:
The system automatically differentiates between left and right ear cups using sensors that detect ear placement characteristics. Even though the physical ear cups are symmetric, the sensor detection system self-determines which ear cup is on which ear and configures audio channels accordingly.
Solution Approach 2:
The patent changes the detection parameter from physical asymmetry (visual differentiation) to sensor-based detection parameters (proximity, acceleration, rotation). This allows symmetric physical design while maintaining functional differentiation through electronic parameter detection.
3Ease of operation
If users do not check labeling on headphones, then ease of use is improved, but audio channel reversal occurs
Solution Approach 1:
The headphones perform self-identification and self-configuration automatically. The sensor system detects ear placement and automatically switches audio channels without requiring the user to read labels or manually configure settings, ensuring correct audio delivery while maintaining ease of use.
Solution Approach 2:
The system uses sensor feedback to detect ear placement and automatically adjusts audio channel routing. The sensor data provides feedback about which ear cup is on which ear, and the system responds by switching the corresponding audio channels to ensure correct stereo separation.
Data Source
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AI summary
A detector located on or near an ear piece may automatically detect whether a left or right ear or neither ear is wearing the ear piece. A signal mixer may automatically apply a correct configuration to signals transmitted to or from the ear piece according to whether the left or right ear or neither ear is determined to be wearing the ear piece. It is emphasized that this abstract is provided to comply with the rules requiring an abstract that will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims.