Wireless Earphones With Seamless Network Handover for Audio Streaming
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Solution Overview
Problem
Conventional wireless headphones are either cumbersome due to cords or large in size, lacking the convenience of being both cordless and in-ear type, and they struggle with seamless transitions between wireless networks when out of range.
Innovation Solution
A wireless earphone design that includes a transceiver circuit for receiving streaming audio via ad hoc and infrastructure wireless networks, automatically transitioning between them without user intervention, allowing connection to a host server for continued audio streaming when out of range of the initial network.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If wireless headphones use cordless design with in-ear type, then convenience and portability are improved, but maintaining seamless network transition capability becomes difficult due to size constraints
Solution Approach 1:
The wireless headphone system is divided into multiple functional modules: ad hoc wireless communication module, infrastructure wireless network module, and host server communication module. Each module handles specific network transition scenarios, allowing the compact in-ear device to maintain complex network transition capabilities through modular architecture.
Solution Approach 2:
A host server acts as an intermediary between the wireless headphones and various network sources. The server receives audio streams from multiple sources (ad hoc, infrastructure networks) and relays them to the headphones, simplifying the transition logic within the compact headphone device while maintaining seamless network switching capability.
2Volume of moving object
If wireless headphones maintain small in-ear size, then portability is improved, but network transition and server connection capabilities are limited
Solution Approach 1:
The transceiver circuit in the in-ear headphone is designed with multi-functionality to support both ad hoc wireless communication and infrastructure wireless network connections. This universal communication capability allows the small device to adapt to various network environments and transition seamlessly between them without requiring additional hardware.
Solution Approach 2:
The system transitions from direct peer-to-peer ad hoc communication to infrastructure-based wireless network communication, adding a new dimension of network topology. This dimensional shift enables the compact headphone to access remote servers and extended networks beyond line-of-sight constraints, maintaining versatility despite small size.
3Reliability
If seamless network transition is implemented, then audio continuity is improved, but device complexity increases
Solution Approach 1:
The system establishes preliminary connections and maintains buffer zones during network transitions. Before switching from ad hoc to infrastructure network, the device prepares by establishing preliminary connection parameters and maintaining audio buffers, ensuring seamless transition without interrupting audio playback.
Solution Approach 2:
The transceiver circuit continuously monitors signal quality and network availability, providing feedback to the control logic. This real-time feedback enables automatic transition decisions based on current network conditions, maintaining audio continuity without requiring complex manual intervention or overly sophisticated transition mechanisms.
Data Source
AI summary
Left and right earphones are independently wireless such that the left and right earphones are not physically connected when worn by a user. Each earphone comprises a speaker and a body portion with an SOC. Each SOC comprises a wireless communication circuit and a processor. Each speaker is for playing audio streamed to the earphones in a lossy compressed format.