Car Audio Protocol Priority Management for Stable Sound
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Solution Overview
Problem
Existing audio reproduction systems face challenges in maintaining favorable sound reproduction when switching from radio communication to wired communication, leading to potential gaps in audio output.
Innovation Solution
An audio reproduction apparatus that prioritizes communication protocols based on sound quality, disconnecting lower-priority connections to ensure stable and high-quality sound transmission, particularly in in-vehicle systems where communication requests are managed to maintain continuous audio output.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the amplifier equipment automatically switches to wired communication interface, then communication stability is improved, but sound reproduction quality may deteriorate
Solution Approach 1:
The system dynamically changes the communication interface parameter (radio or wired) based on the communication protocol priority. When a high-priority protocol is detected, the system switches to radio interface; otherwise, it uses wired interface, thereby optimizing sound reproduction quality while maintaining communication stability.
Solution Approach 2:
The communication interface selection is made dynamic rather than static. The control unit continuously monitors incoming communication requests and adjusts the interface selection in real-time based on protocol priority, enabling the system to adapt to changing communication conditions and maintain optimal sound quality.
2Adaptability or versatility
If multiple communication connections are maintained, then communication versatility is improved, but sound quality deteriorates due to protocol conflicts
Solution Approach 1:
The system extracts and identifies the communication protocol type from incoming requests, then selectively maintains or disconnects specific communication connections based on protocol priority. This allows the system to handle multiple protocol types while ensuring only the highest priority protocol actively transmits audio signals.
Solution Approach 2:
The communication management is segmented into protocol identification, priority determination, and selective connection maintenance. The control unit processes different communication protocols separately and applies different connection strategies to each, allowing versatile multi-protocol support while preventing quality degradation from concurrent low-priority transmissions.
3Reliability
If wired communication is used instead of radio communication, then communication stability is improved, but power consumption increases
Solution Approach 1:
The system changes the communication interface parameter dynamically based on protocol priority and power management considerations. For low-priority protocols, the system prefers radio interface to reduce power consumption, while maintaining wired connection availability for potential high-priority protocols, thus optimizing the balance between stability and energy efficiency.
Data Source
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AI summary
To maintain favorable sound reproduction. In a car audio apparatus 6 which includes an inter-equipment communication unit 51 configured to perform communication according to each of a plurality of sound communication protocols Pv for transmitting a sound signal A3 of audio, and a reproduction processing unit 52 configured to reproduce the sound signal A3 received through the communication, and which receives the sound signal A3 from a smartphone 8 through communication according to any of the sound communication protocols Pv, the car audio apparatus 6 includes a priority storing unit 62 configured to store a priority of the sound communication protocols Pv in advance, and a sound signal input controlling unit 53 configured to, in the case where a sound communication request for transmitting the sound signal A3 is received from the smartphone 8, accept the sound communication request according to the priority of a sound communication protocol Pv of requested communication.