Bluetooth Audio Playback Apparatus With Source Scanning Mechanism
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Solution Overview
Problem
Balancing audio transmission quality and efficiency in Bluetooth technology is challenging due to limitations in existing two-way audio communication systems, particularly in supporting higher sampling rates and minimizing unnecessary hold time intervals.
Innovation Solution
The proposed Bluetooth audio playback apparatus and communication method employ an audio source scanning mechanism that includes ability negotiation to determine ACL technology support, coding negotiation for encoding and decoding parameters, and audio delay negotiation to establish two-way audio transmission based on ACL technology, ensuring high-quality audio transmission and minimizing hold time intervals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If traditional Bluetooth audio transmission is used, then compatibility is maintained, but audio transmission quality and sampling rates are limited
Solution Approach 1:
The patent changes the transmission parameter from traditional SCO/HFP protocols to ACL (Asynchronous Connectionless) protocol, enabling higher sampling rates (up to 48kHz) and improved audio quality while maintaining backward compatibility through negotiation mechanisms
Solution Approach 2:
The system dynamically negotiates and switches between different audio transmission modes (SCO, HFP, ACL) based on device capabilities and requirements, allowing flexible adaptation between quality and compatibility
2Productivity
If audio transmission is performed without negotiation, then connection speed is fast, but hold time intervals increase and efficiency decreases
Solution Approach 1:
The patent performs ability negotiation, coding negotiation, and delay negotiation in advance during the connection establishment phase, determining optimal parameters before actual audio transmission begins, thereby eliminating hold time intervals during data transmission
Solution Approach 2:
The system uses feedback from negotiation processes to adjust transmission parameters, where devices exchange capability information and agree on optimal settings for ACL transmission, ensuring efficient communication without unnecessary waiting
3Manufacturing precision
If ACL technology is used for two-way audio transmission, then audio transmission quality improves, but device complexity increases
Solution Approach 1:
The patent segments the negotiation process into distinct phases: ability negotiation (determining ACL support), coding negotiation (agreeing on audio codecs), and delay negotiation (setting timing parameters), making the complex ACL implementation manageable and systematic
Data Source
AI summary
The present disclosure discloses an audio communication method having two-way high quality audio transmission mechanism that includes steps outlined below. Communication between an audio communication apparatus and an external audio communication apparatus is performed to establish an audio link. An ability negotiation process is performed to determine the external audio communication apparatus supports ACL link technology. A coding negotiation process is performed to negotiate an audio encoding and decoding parameter. An audio delay negotiation process is performed to provide a first audio data delay parameter to the external audio communication apparatus and retrieve a second audio data delay parameter from the external audio communication apparatus to further determine an actual audio data delay parameter. A two-way audio transmission is performed according to the audio encoding and decoding parameter and the actual audio data delay parameter with the external audio communication apparatus.