Audio Transmission System Multipoint Link via Parameter Impersonation
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Solution Overview
Problem
Existing audio transmission systems using standard wireless communication protocols like Bluetooth Low Energy (BLE) primarily support point-to-point links, making it difficult to implement multipoint-to-point or multipoint-to-multipoint audio data transmission, which is essential for multiple audio transmission units to seamlessly transmit audio signals to a single receiver unit.
Innovation Solution
The system enables the second audio transmission unit to impersonate the first unit by receiving a link parameter set via a secondary wireless link, allowing both units to transmit audio data to the receiver unit using the same protocol as the first unit, effectively creating a multipoint-to-point or multipoint-to-multipoint wireless link by sharing the same link parameters such as access address, timing synchronization, and frequency hopping sequence.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If standard wireless communication protocols like BLE are used for audio transmission, then point-to-point link reliability is ensured, but multipoint-to-point or multipoint-to-multipoint transmission capability is lost
Solution Approach 1:
The patent enables second and subsequent transmission units to copy the link parameters (access address, timing synchronization, frequency hopping sequence) of the first transmission unit. This copying mechanism allows multiple transmitters to impersonate the first unit and transmit audio data through the same established link, achieving multipoint transmission without requiring the receiver to implement complex multipoint protocol handling
Solution Approach 2:
The first transmission unit serves multiple functions: it acts as both a normal audio transmitter and as a parameter distributor to enable other transmission units. By sharing its link parameters with other units, it creates a universal transmission capability where multiple sources can access the same receiver link, effectively making the system support both point-to-point and multipoint modes
2Adaptability or versatility
If multiple audio transmission units transmit simultaneously to a single receiver, then audio transmission versatility is improved, but protocol compatibility with standard receivers is compromised
Solution Approach 1:
The first transmission unit acts as an intermediary that mediates between multiple transmission units and the receiver. It establishes the initial link with the receiver using standard protocols, then distributes its link parameters to other transmission units. This intermediary role allows non-standard multipoint operation from the transmitter side while maintaining standard protocol compliance at the receiver side
Solution Approach 2:
Instead of modifying the receiver to support multiple transmitters (the obvious approach), the patent inverts the solution by modifying the transmitters to share parameters. The receiver remains unchanged and continues to operate with standard point-to-point protocol, while the transmitters adapt by copying parameters to enable multipoint transmission
Data Source
AI summary
There is provided an audio transmission system, comprising a plurality of audio transmission units including at least a first audio transmission unit and a second audio transmission unit and at least one audio receiver unit, wherein the first audio transmission unit and the at least one audio receiver unit are configured to establish a first wireless link for transmitting audio data from the first audio transmission unit to the audio receiver unit, the first audio transmission unit and the second audio transmission unit are configured to establish a second wireless link for transmitting a link parameter set from the first audio transmission unit to the second audio transmission unit, the link parameter set allowing the second audio transmission unit to impersonate the first audio transmission unit for transmitting audio data from the second audio transmission unit via the first wireless link to the audio receiver device.