Wireless Surround Speaker Powering With Swappable Battery Modules
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Solution Overview
Problem
Conventional multichannel audio systems with satellite speakers often require cumbersome and hazardous physical cables for surround acoustic drivers, which are cosmetically undesirable and inconvenient to install, especially for rear placement.
Innovation Solution
The audio system employs wireless audio signal transmission between a wireless audio signal transmitter and receiver, integrated with rechargeable batteries and amplifiers in interchangeable modules, allowing for cable-free operation and battery charging via inductive chargers or photovoltaic cells, with logic to estimate battery energy and alert users to low charge levels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If physical cables are used to connect surround speakers to the audio system console, then reliable power and signal transmission is achieved, but cable hazards, cosmetic undesirability, and installation inconvenience occur
Solution Approach 1:
The patent replaces the mechanical cable connection system with a wireless communication system. The surround speakers and console are equipped with wireless transceivers that communicate via radio frequency, eliminating the need for physical cables while maintaining reliable signal transmission. This substitution directly resolves the contradiction by removing the harmful cable-related factors while preserving the reliability of audio signal and power transmission through wireless power transfer technology.
Solution Approach 2:
The patent introduces wireless electromagnetic waves as an intermediary medium to transmit audio signals and power between the console and surround speakers. Instead of direct cable contact, the electromagnetic field serves as the mediator carrying energy and information, thereby eliminating cable hazards while maintaining transmission reliability through the intermediary wireless channel.
2Object-affected harmful factors
If wireless audio signal transmission is implemented, then cable hazards and installation issues are eliminated, but power supply complexity increases due to battery management requirements
Solution Approach 1:
The patent implements multi-functionality by combining wireless audio signal reception, wireless power transfer, and battery charging capabilities into a single integrated system. The surround speakers contain both wireless receivers for audio signals and rechargeable batteries with wireless power transfer coils, allowing the same wireless communication infrastructure to serve multiple functions. This reduces overall system complexity despite the added battery management requirements.
Solution Approach 2:
The patent enables self-service through automatic battery charging when speakers are placed on designated charging surfaces or near the console. The system automatically detects when a speaker needs charging and initiates wireless power transfer without user intervention. The battery management system automatically monitors charge levels and manages power consumption, reducing the operational complexity for users while maintaining wireless operation.
3Duration of action of moving object
If rechargeable batteries are used in surround speakers, then continuous operation is enabled, but battery state monitoring and charging infrastructure are required
Solution Approach 1:
The patent segments the power supply function by using removable rechargeable batteries in each surround speaker. This allows independent battery management for each speaker unit, with the ability to replace or recharge individual batteries without affecting other speakers. The charging infrastructure is similarly segmented, with multiple charging surfaces or locations available throughout the room, distributing the charging load and reducing centralized infrastructure complexity.
Solution Approach 2:
The patent implements preliminary action by providing predetermined charging locations and surfaces throughout the environment where speakers can be recharged. Users can proactively charge speakers at convenient locations before they are needed, ensuring continuous operation without waiting for centralized charging. The system includes battery state monitoring that alerts users when charging is needed, enabling proactive battery management.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration eliminates the need for physical cables, enhances user convenience by allowing modular and flexible placement of speakers, and ensures continuous operation through battery charging and energy monitoring, while maintaining high-quality audio transmission.
Implementation Method 1
The loudspeaker assembly may further include a photovoltaic cell for recharging the rechargeable battery
Implementation Method 2
The battery charger may be an inductive charger
Data Source
AI summary
An audio system including wireless speakers. The wireless speakers include rechargeable batteries and are interchangeable so that two loudspeakers may be recharged while two loudspeakers are operating wirelessly.