Headphone Earpiece Alignment and Power Control by Wear Detection
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Solution Overview
Problem
Conventional headphones suffer from bulkiness due to large headbands and stems, require manual alignment of earpieces, and face issues with wireless power management and incorrect audio channel assignment.
Innovation Solution
Incorporation of earpiece synchronization components, spring-driven pivot mechanisms, and orientation sensors to synchronize earpiece movement, reduce bulk, and manage power efficiently.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If conventional headband and stem designs are used, then structural stability is maintained, but device bulk and weight increase
Solution Approach 1:
The headband is divided into multiple adjustable segments that can be independently positioned, allowing the structure to adapt to different head sizes while reducing overall bulk. The stem is segmented to allow telescoping and folding, enabling compact storage without compromising structural integrity during use.
Solution Approach 2:
The headband incorporates adjustable and telescoping mechanisms that allow dynamic reconfiguration between extended (stable) and retracted (compact) states. The stem features pivot joints and locking mechanisms enabling transition between stable support positions and compact folded positions for storage.
2Ease of operation
If manual earpiece alignment is required, then device complexity is reduced, but ease of operation deteriorates
Solution Approach 1:
The headphones feature self-aligning earpieces that automatically position themselves correctly on the user's ears through mechanical guidance and sensor feedback. The system detects ear position and adjusts earpiece orientation autonomously without requiring manual intervention from the user.
Solution Approach 2:
Orientation sensors detect the position and orientation of the earpieces relative to the user's head and provide feedback to a control system. This feedback enables automatic adjustment of earpiece alignment through motorized mechanisms, ensuring correct positioning while maintaining manageable system complexity through intelligent control.
3Ease of operation
If wireless power management is implemented, then ease of operation improves, but reliability deteriorates due to power management challenges
Solution Approach 1:
Traditional mechanical power switches and indicators are replaced with wireless power management system that uses magnetic field communication and sensor-based detection. The system automatically detects when headphones are on the user's head and activates power transfer through wireless charging integration, eliminating manual power management while maintaining reliability through automated control.
4Adaptability or versatility
If fixed audio channel assignment is used, then device complexity is reduced, but adaptability deteriorates
Solution Approach 1:
The audio channel assignment is made dynamic through sensor-based detection of earpiece position and orientation. The system continuously monitors the spatial relationship between earpieces and adjusts audio channel routing in real-time based on detected head orientation, enabling adaptation to different wearing positions and user preferences without requiring complex manual configuration.
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 include earpad assemblies that improve acoustic isolation are discussed. User convenience features that include 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.