Loudspeaker Interconnection Verification for Automatic Power Splitting

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Solution Overview

Problem

The installation of traditional loudspeakers in audio systems is challenging due to issues such as potential human error in speaker wire polarity, miswiring of active loudspeakers, complex correlation of digital IDs with physical speakers, and power management within modern office environments, leading to degraded performance and equipment damage.

Innovation Solution

A system and method for controlling power distribution between active and passive loudspeaker assemblies using an interconnection verification circuit and controller to ensure proper connectivity and adjust power levels, utilizing balanced mode radiator loudspeakers and PoE technology to simplify installation and reduce errors.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If traditional speaker wire installation methods are used, then system connectivity is achieved, but human error in polarity connection increases and installation complexity increases

Engineering Contradiction:
Improveconnection reliabilityVSAvoidinstallation complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent replaces traditional mechanical speaker wire connection with a wireless audio distribution system using electromagnetic fields. Active loudspeakers transmit audio signals and power wirelessly to passive loudspeakers, eliminating the need for physical speaker wire installation and polarity matching by installers.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent introduces wireless communication interfaces and verification circuits as intermediaries between audio sources and loudspeakers. These intermediaries automatically handle signal transmission and connection verification, removing the need for manual wire stripping, polarity matching, and physical connection by installers.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Adaptability or versatility

If active loudspeakers with integrated amplifiers are used, then equipment functionality is improved, but risk of miswiring to unrelated equipment increases

Engineering Contradiction:
Improveequipment functionalityVSAvoidmiswiring damage risk
Core Design Contradiction:
Adaptability or versatilityVSObject-affected harmful factors

Solution Approach 1:

The patent implements verification circuits that provide feedback about connected devices to the audio distribution system. These circuits detect whether passive loudspeakers are properly connected to active loudspeakers and provide status information, enabling the system to verify correct connections and prevent miswiring to unrelated equipment like projectors.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The patent replaces physical connector-based identification with wireless verification mechanisms. Instead of relying on physical plug-and-play connections that can be mistakenly connected to wrong devices, the system uses wireless verification circuits to confirm proper device pairing and prevent harmful misconnections.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

3Adaptability or versatility

If more audio zones are added to modern office buildings, then audio coverage is improved, but difficulty in correlating digital IDs with physical speakers increases

Engineering Contradiction:
Improveaudio coverageVSAvoiddigital ID correlation difficulty
Core Design Contradiction:
Adaptability or versatilityVSDifficulty of detecting and measuring

Solution Approach 1:

The patent implements self-identifying verification circuits in passive loudspeakers that automatically provide their status and location information to the audio distribution system. This self-service approach eliminates the need for installers to manually correlate digital IDs with physical speakers, as the system automatically discovers and identifies each loudspeaker's position and status.

Inventive Principle:
Principle #25Self-service

4Power

If power is distributed to multiple loudspeaker assemblies, then audio volume is improved, but power management complexity increases

Engineering Contradiction:
Improveaudio volumeVSAvoidpower management complexity
Core Design Contradiction:
PowerVSDevice complexity

Solution Approach 1:

The patent uses verification circuits to provide feedback about connected loudspeaker assemblies to the audio distribution system. This feedback mechanism enables automatic power management by identifying which loudspeakers are properly connected and available, allowing the system to automatically distribute power without manual configuration or complex management.

Inventive Principle:
Principle #23Feedback

Data Source

PatentUS12483830B2System and method for controlling the distribution of power between active loudspeaker assemblies and passive loudspeaker assemblies in an audio distribution system
Publication Date: 2025.11.25 CRESTRON ELECTRONICS INC
  • US12483830B2 patent drawing
  • US12483830B2 patent drawing
  • US12483830B2 patent drawing

AI summary

A system and method to adjust power levels between interconnected loudspeaker assemblies is described herein, the system comprising: a primary loudspeaker assembly, and at least one secondary loudspeaker assembly interconnected with the primary loudspeaker assembly and adapted to receive an audio signal from the primary loudspeaker assembly; an interconnection verification circuit located in the primary loudspeaker assembly; and a controller located in the primary loudspeaker assembly adapted to receive the status signal from the interconnection verification circuit, wherein the controller comprises—at least one processor communicatively coupled to the interconnection verification circuit; a memory operatively connected to the at least one processor, wherein the memory stores computer-executable instructions that, when executed by the at least one processor, cause the at least one processor to execute a method that comprises: generating an interconnection test signal by the interconnection verification circuit, wherein the interconnection test signal determines if the primary loudspeaker assembly is properly connected to the at least one secondary loudspeaker assembly; generating a connected status signal if the interconnection test signal determines that the primary loudspeaker assembly is properly connected to the at least one secondary loudspeaker assembly; receiving the connected status signal by the controller located in the primary loudspeaker assembly; and generating a first set of command signals by the controller to split power between the primary loudspeaker assembly and the at least one secondary loudspeaker assembly.