Wireless Audio Sharing via Pseudo Hub-and-Spoke Topology
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Solution Overview
Problem
Existing point-to-point wireless communication technologies, such as Bluetooth, struggle to simultaneously transmit audio to multiple devices, making it difficult to provide audio to both ears of a user or share audio with another user's device, and are hindered by complexities in establishing secure connections and converting between analog and digital forms.
Innovation Solution
A pseudo hub-and-spoke topology network is established using RF or infrared signals, where a personal electronic device is induced to transmit audio to multiple wireless audio devices, with these devices coordinating through a secondary point-to-point link for network management, allowing both devices to receive and manage audio signals while maintaining efficient power consumption and security.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If point-to-point wireless communication is used to transmit audio, then secure connection and audio quality are improved, but the ability to transmit to multiple devices simultaneously deteriorates
Solution Approach 1:
The system segments the audio transmission by creating a primary receiving device that establishes a secure point-to-point connection with the source, and secondary receiving devices that receive audio through the primary device. This segmentation allows the secure connection requirement to be maintained at the source-primary level while enabling multi-device distribution through the primary-secondary level.
Solution Approach 2:
The primary receiving device acts as an intermediary between the source device and secondary receiving devices. It receives audio securely from the source and then wirelessly transmits to one or more secondary devices, thereby enabling multi-device transmission while preserving the secure point-to-point connection at the critical source level.
2Reliability
If point-to-point wireless communication is used, then connection security is improved, but the complexity of establishing connections between multiple devices increases
Solution Approach 1:
The primary receiving device serves as a mediator that simplifies connection establishment. Secondary devices connect only to the primary device rather than establishing separate connections with the source, reducing the number of connection protocols and security handshakes required while maintaining secure audio transmission through the primary device's secure connection to the source.
Solution Approach 2:
Multiple secondary devices are merged into a single communication path through the primary receiving device. Instead of each secondary device establishing independent secure connections with the source, they combine their reception through the primary device, which already has the secure connection established, thereby reducing overall system complexity.
3Adaptability or versatility
If audio is transmitted to multiple devices simultaneously, then audio sharing capability is improved, but power consumption increases
Solution Approach 1:
The audio transmission path is segmented into a primary receiving device that maintains a continuous secure connection with the source, and secondary devices that receive audio wirelessly from the primary device. This segmentation allows power-intensive operations (secure connection maintenance, audio decoding) to be concentrated in the primary device, while secondary devices can operate with lower power consumption by simply receiving and playing audio from the primary device.
Solution Approach 2:
The primary receiving device acts as a power-efficient intermediary that handles the computationally intensive tasks of secure connection maintenance and audio processing. Secondary devices, which have simpler reception and playback functions, consume less power while still achieving audio sharing capability through the primary device's wireless transmission.
Data Source
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AI summary
A first audio device exchanges first control signals with a source device and thereby receives first audio signals from the source device. A second audio device exchanges second control signals with the first audio device including information the second audio device needs to receive the first audio signals from the source device. The first control signals include communications using Bluetooth BR/EDR protocols and establish a first Bluetooth link for audio streaming from the source device to the first audio device. The second control signals include communications using Bluetooth Low Energy (BLE) protocols and transfer to the second audio device parameters of the first Bluetooth link, such that the second audio device can receive and decode an audio stream transmitted from the source device to the first audio device over the first Bluetooth link.