Audio Forwarding Device for Bluetooth to BLE Compatibility
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Solution Overview
Problem
There is a compatibility issue between classic Bluetooth (BT) audio source devices and Bluetooth Low Energy (BLE) audio receiving devices, leading to transmission delays and interference, particularly due to asynchronous communication and multitasking conflicts in classic BT devices like smartphones.
Innovation Solution
An audio forwarding method and device that establish dual-mode communication links using classic BT and BLE protocols, processing audio data to generate buffered data, and transmitting it using predetermined encoding frame lengths, with the option to send empty data frames to maintain time continuity and reduce delays.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If classic BT asynchronous communication is used for audio forwarding, then compatibility between classic BT and BLE devices is achieved, but audio transmission delay increases due to retransmissions and multitasking conflicts
Solution Approach 1:
The patent introduces a forwarding device as an intermediary between the classic BT audio source and BLE audio receiver. This mediator translates and forwards audio data packets, enabling communication between incompatible protocols while managing transmission timing to reduce delays caused by asynchronous operations and multitasking conflicts.
2Reliability
If audio data is retransmitted multiple times in interference and fading environments, then transmission reliability is improved, but transmission delay increases
Solution Approach 1:
The forwarding device performs preliminary actions by pre-processing audio data into standardized packets and maintaining a buffer of ready-to-send data. This preparation allows the system to quickly retransmit packets when interference occurs, rather than waiting for complete data reception and processing, thereby reducing the time penalty of retransmissions.
3Adaptability or versatility
If smartphone multitasking is allowed, then device functionality is improved, but audio data transmission stability deteriorates due to random delays
Solution Approach 1:
The patent segments the audio transmission process into independent, standardized packets with clear timing markers. By dividing the audio stream into discrete units that can be individually buffered, transmitted, and retransmitted, the system isolates transmission operations from smartphone multitasking interference, maintaining stability even when the device performs other tasks.
Data Source
AI summary
An audio forwarding method, an audio forwarding method device and a storage medium are described. The audio forwarding method comprises: establishing a first communication link with a sound source device based on a first wireless communication protocol; establishing a second communication link with an audio playback device based on a second wireless communication protocol; receiving first audio data from the sound source device through the first communication link; processing the first audio data to generate second audio data, and storing the second audio data into a second buffer; and transmitting the second audio data to the audio playback device through the second communication link. The second audio data in the second buffer is acquired according to a predetermined encoding frame length, a current frame is processed as an empty data frame if the second audio data in the second buffer is not successfully acquired, and an audio data packet containing the empty data frame is transmitted or not transmitted to the audio playback device through the second communication link within a current transmission time.