Wireless Master-Slave Loudspeaker Pairing and Synchronization
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Solution Overview
Problem
Existing loudspeaker and lighting systems in recreational vehicles and watercraft often operate independently due to different manufacturers and owners, making synchronous playback and lighting control difficult, especially when not connected via hardwired connections or general broadcast inputs.
Innovation Solution
A system that enables wireless connection and control of multiple loudspeaker systems using a master-slave configuration with Bluetooth and RF chipsets, allowing for synchronized music playback and lighting control, with features like Initialization Vector key sharing, mode switching, and remote reconnection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If hardwired connections are used between speakers and lights, then synchronous playback and lighting control can be achieved, but system complexity and installation difficulty increase
Solution Approach 1:
The patent replaces mechanical hardwired connections with wireless communication systems (Bluetooth and RF chipsets) to achieve synchronous playback and lighting control. The master speaker system transmits control signals and audio data wirelessly to slave speaker systems and lighting systems, eliminating the need for physical connection infrastructure while maintaining synchronization reliability.
Solution Approach 2:
The patent introduces wireless communication protocols and control algorithms as intermediaries between the master speaker system and slave systems. The Bluetooth and RF chipsets act as mediators to transmit control commands, audio data, and synchronization signals without direct physical connections, resolving the contradiction between reliability and complexity.
2Adaptability or versatility
If multiple independent speaker systems operate autonomously, then system adaptability and ease of setup improve, but synchronous playback capability deteriorates
Solution Approach 1:
The patent implements dynamic role assignment where speaker systems can switch between master and slave modes based on operational needs. The system dynamically establishes master-slave relationships through wireless pairing, allowing flexible configuration while maintaining synchronous playback capability. This dynamic adaptability resolves the contradiction between system flexibility and synchronization reliability.
Solution Approach 2:
The patent segments the audio system into independent master and slave units that can operate autonomously or synchronize when needed. Each speaker system maintains its own audio processing capabilities but can receive control signals from a master unit to achieve coordinated playback, balancing independence with synchronization.
3Ease of operation
If wireless communication protocols are implemented for control signal transmission, then installation ease and system flexibility improve, but control precision and synchronization accuracy may deteriorate
Solution Approach 1:
The patent implements feedback mechanisms where the master speaker system receives status information from slave systems and adjusts transmission timing accordingly. The system monitors synchronization status and dynamically compensates for wireless transmission delays, maintaining precision despite the use of wireless protocols.
Solution Approach 2:
The patent performs preliminary synchronization calibration during the wireless pairing process. The system pre-compensates for transmission delays and establishes timing references before actual playback begins, ensuring synchronization accuracy is maintained throughout operation despite wireless communication variability.
Data Source
AI summary
A method for pairing and controlling multiple loudspeaker systems within a network. The network includes multiple control units, each having Bluetooth and RF chipsets, an MCU, and at least one transceiver. One control unit, the master unit, is operatively connected to a first loudspeaker system. A second control unit, the slave unit, is operatively connected to a second loudspeaker system. The master unit generates and records an IV key. The IV key and master unit identifying information are transmitted to, and recorded by, the slave unit. The IV key is then used to initiate communication between the master and slave units. Slave unit identifying information is transmitted to, and recorded by, the master unit. The master unit then transmits digital data to the slave unit, which relays the data to the second loudspeaker system. The first and second loudspeaker systems then simultaneously perform a task associated with the digital data.