Wireless Earbud Audio Playback Link Reliability
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Solution Overview
Problem
True wireless earbuds often experience audio glitches due to packet loss when one earbud fails to receive signals from the client device, leading to inefficient power consumption and unreliable connections.
Innovation Solution
A method where both earbuds establish parallel connections with the client device and relay acknowledgement signals to ensure proper signal receipt, with one earbud transmitting a jamming signal to prevent the other from sending acknowledgement to the client, thereby reducing power consumption and improving connection reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If both earbuds establish parallel connections with the client device, then connection reliability is improved, but device complexity increases
Solution Approach 1:
The system segments the acknowledgment function by designating one earbud as primary and the other as secondary. The primary earbud handles all ACK transmissions to the client device, while the secondary earbud focuses on receiving and decoding packets. This segmentation maintains dual-connection reliability while reducing overall system complexity by distributing responsibilities.
Solution Approach 2:
The primary earbud acts as an intermediary between the client device and the secondary earbud. It receives packets from the client, decodes them locally, and then transmits the decoded audio data to the secondary earbud over a separate connection. This intermediary role simplifies the secondary earbud's function while maintaining reliable dual-connection operation.
2Use of energy by moving object
If one earbud transmits jamming signal to prevent the other from sending acknowledgement, then power consumption is reduced, but signal interference risk increases
Solution Approach 1:
The patent extracts the ACK transmission function from the secondary earbud and assigns it exclusively to the primary earbud. By removing this function from the secondary device, power consumption is reduced without requiring active jamming signals. The secondary earbud simply remains silent on the uplink channel, eliminating interference risks while maintaining low power operation.
Solution Approach 2:
Instead of having both earbuds attempt ACK transmission and then using jamming signals to prevent conflicts, the system inverts the approach by designating one earbud (secondary) to never transmit ACKs. This inversion eliminates the need for jamming signals entirely, as the potential for conflict is removed at the source.
3Device complexity
If only one earbud sends acknowledgement packets, then device complexity is reduced, but audio glitches occur due to packet loss
Solution Approach 1:
The primary earbud performs preliminary decoding of packets received from the client device before transmitting them to the secondary earbud. This preliminary action ensures that the secondary earbud receives pre-decoded, reliable audio data, eliminating glitches that would occur if it attempted to decode potentially lost or corrupted packets independently.
Solution Approach 2:
The primary earbud serves as an intermediary that guarantees data integrity by decoding packets before forwarding them to the secondary earbud. This intermediary function ensures that even if the secondary earbud loses direct connection packets from the client, it receives reliable decoded audio data from the primary, preventing audio glitches.
Data Source
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AI summary
The technology relates to establishing wireless communication links, or connections, between a first audio accessory device, a second audio accessory device, and a client computing device. After receiving signals from the client computing device to initiate audio output, the first audio accessory device and the second audio accessory device may both perform a series of steps in parallel to establish connections with the client computing device and with each other. The series of steps may include relaying one or more acknowledgement (ACK) signals between the audio accessory devices in order to confirm proper receipt of the signals from the client computing device at both audio accessory devices. Alternatively, the series of steps may include transmitting a jamming signal from one of the audio accessory devices in order to prevent an ACK signal from the other audio accessory device from reaching the client computing device and initiating audio output.