Headphone Orientation Sensing for Automatic Left-Right Switching
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Solution Overview
Problem
Conventional headphones suffer from bulkiness due to mechanical connections between earpieces and headbands, requiring manual alignment, and power management issues in wireless models.
Innovation Solution
Incorporation of earpiece synchronization components, such as cable loops or rotating gears, to synchronize earpiece movement, use of spring-driven pivot mechanisms to control motion, and orientation sensors to manage power and channel switching based on earpiece positioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If conventional mechanical connections (yoke) are used to connect earpieces to headband, then structural stability is improved, but device bulk increases
Solution Approach 1:
The patent removes the conventional yoke structure that surrounded the periphery of each earpiece and replaces it with a simplified mechanical connection. This extraction of the bulky yoke component directly reduces device bulk while maintaining the essential connection function between earpieces and headband through alternative mechanical means.
Solution Approach 2:
The patent divides the connection system into separate functional elements: individual mechanical connections for each earpiece rather than a unified yoke structure. This segmentation allows for optimized, minimalistic connection components that reduce overall bulk while maintaining structural stability through distributed connection points.
2Ease of manufacture
If manual alignment verification is required for earpieces, then manufacturing simplicity is improved, but ease of operation deteriorates
Solution Approach 1:
The patent incorporates sensors that automatically detect and verify earpiece alignment with the user's ears. This self-service mechanism eliminates the need for manual alignment verification by the user, allowing the system to autonomously determine correct positioning and configure audio channels accordingly, thereby improving ease of operation while maintaining manufacturing simplicity.
Solution Approach 2:
The patent uses sensor feedback to detect earpiece orientation and position. The sensors provide real-time information about whether earpieces are correctly aligned, allowing the system to automatically adjust or notify the user of misalignment. This feedback loop eliminates manual verification steps while keeping the manufacturing process simple.
3Ease of operation
If wireless headphones are used to eliminate physical connections, then ease of operation is improved, but power management issues arise
Solution Approach 1:
The patent implements periodic power management strategies where the headphones can enter low-power states when not in use and activate only when needed. The sensor system detects when earpieces are properly positioned on the user's ears and triggers audio playback only at those moments, creating a periodic on-demand operation pattern that optimizes power consumption while maintaining wireless convenience.
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
Enhances user comfort and convenience by reducing bulk, automating earpiece alignment, and optimizing power usage.
Implementation Method 1
earpiece position sensors configured to measure an angular orientation of the first and second earpieces with respect to the headband
Implementation Method 2
spring-driven pivot mechanisms to control motion
Data Source
Figure 1A~1B
Figure 2A~2B
Figure 2C
AI summary
This disclosure includes several different features suitable for use in circumaural and supra-aural headphones designs. Designs that reduce the size of headphones and allow for small form-factor storage configurations are discussed. User convenience features that include synchronizing earpiece stem positions and automatically detecting the orientation of the headphones on a user's head are also discussed. Various power-saving features, design features, sensor configurations and user comfort features are also discussed.