System und Verfahren zur Daisy-Chain-Adressierung in einem Lautsprechersystem

Details

Veröffentlichungs-Nr.

EP4622296

Aktenzeichen

EP24165587

Anmeldetag

22. März 2024

Veröffentlichung

24. September 2025

Rechtsraum

EP

IPC

H04R27/00H04R29/00

Abstract

The invention regards a speaker system (100) comprising a main unit (101) and plurality of passive units (102), wherein the main unit (101) and plurality of passive units (102) are connected by at least a control voltage signal connection (110), a reference voltage signal connection (111) and an audio signal connection (112) to form a daisy chain, the main unit (101) being configured to generate a control voltage to the plurality of passive units (102) through the control voltage signal connection (110) ; a reference voltage to the plurality of passive units (102) through the reference voltage signal connection (111); and an audio signal to the plurality of passive units (102) through the audio signal connection (112), the speaker system (100) further comprising a voltage regulation unit (120) between each of the plurality of passive units (102) on the reference voltage signal connection (111), wherein each voltage regulation unit (120) is adapted to provide a local reference voltage to each passive unit (102), wherein the local reference voltages to the plurality of passive units (102) gradually increase or decrease between subsequent passive units along the daisy chain, each of the plurality of passive unit (102) comprising: a speaker unit (104); a comparator unit (105) configured to compare the control voltage to a first voltage threshold and a second voltage threshold generated from the local reference voltage to generate an audio enable signal enabling the speaker unit to play the audio signal when the control voltage is between the first voltage threshold and the second voltage threshold. A method of testing a speaker system is disclosed.

Anmelder

Firma

Axis AB

Land

🇸🇪 Schweden

Fachgebiete