Bluetooth Primary-Secondary Data Interception for Multi-Device Audio
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Solution Overview
Problem
Bluetooth communication protocols, such as A2DP, typically allow only one audio playback device to connect directly to a data source, limiting the ability to transmit data to multiple devices simultaneously, which is a challenge in scenarios like stereo headphones where both channels need to receive data wirelessly.
Innovation Solution
A method and system where a primary device acquires data packets from a data source and a secondary device intercepts and records missing data packets, with the primary device determining and sending the missing packets to the secondary device, ensuring consistent data transmission across multiple playback devices without additional forwarding processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If Bluetooth protocol allows only one audio playback device to connect directly to data source, then connection simplicity is maintained, but the ability to transmit data to multiple devices simultaneously is limited
Solution Approach 1:
The patent introduces a primary playback device as an intermediary between the data source device and secondary playback devices. The primary device receives data from the data source via Bluetooth and then forwards it to secondary devices, enabling one-to-many transmission while maintaining standard Bluetooth protocol constraints. This mediator approach resolves the contradiction by allowing multiple device connections without requiring the data source to directly manage complex multi-device connections.
2Adaptability or versatility
If data is transmitted from primary device to secondary device via forwarding process, then data can reach multiple devices, but bandwidth consumption increases
Solution Approach 1:
The patent employs data interception technology that operates in a different dimension from traditional forwarding. Instead of receiving and re-transmitting data through the primary device, secondary devices directly intercept data packets from the data source device's Bluetooth transmission stream. This parallel interception approach eliminates the need for additional forwarding bandwidth while enabling simultaneous data reception by multiple devices.
3Loss of energy
If secondary device intercepts data packets directly from data source, then bandwidth consumption is reduced, but data packet completeness cannot be ensured
Solution Approach 1:
The patent implements a feedback mechanism where secondary devices send data packet reception status back to the primary device. The primary device tracks which packets have been successfully intercepted by secondary devices and identifies missing packets. This feedback loop enables the primary device to compensate for any lost or missed packets, ensuring data completeness while maintaining the bandwidth-efficient direct interception approach.
4Reliability
If traditional forwarding process is used for multi-device transmission, then data integrity can be maintained, but additional data forwarding processes are required
Solution Approach 1:
The patent uses data interception to create a copy of the data transmission stream directly from the data source to secondary devices, bypassing the need for traditional forwarding processes. The secondary device captures a copy of the Bluetooth data packets being transmitted by the data source, eliminating the need for the primary device to act as a mandatory forwarder. This copying approach maintains data integrity while simplifying the overall transmission architecture.
Data Source
AI summary
A method for Bluetooth communication, a Bluetooth system and an electronic device are disclosed. The Bluetooth system includes: a data source device, a primary device and at least one secondary device. The primary device is configured to acquire, via Bluetooth communication, first data packets delivered by a data source device as a first data packet set and the secondary device is configured to acquire, via data interception, second data packets from the data source device as a second data packet set within at least a portion of a time period in the Bluetooth communication. The primary device communicates with the secondary device in a predetermined interaction node and sends the missing data packet from the first data packet set according to the details of acquisition of the data packets from the data interception.