EP 2875652 B1 20191204 - PUBLIC ADDRESS SYSTEM AND MONITORING DEVICE FOR A PUBLIC ADDRESS SYSTEM
Title (en)
PUBLIC ADDRESS SYSTEM AND MONITORING DEVICE FOR A PUBLIC ADDRESS SYSTEM
Title (de)
ÖFFENTLICHES ADRESSSYSTEM LAUTSPRECHERANLAGE UND ÜBERWACHUNGSVORRICHTUNG FÜR EINE ÖFFENTLICHES ADRESSSYSTEM LAUTSPRECHERANLAGE
Title (fr)
SYSTÈME D'AVERTISSEMENT ET DE SIGNALISATION PUBLIC, ET DISPOSITIF DE SURVEILLANCE POUR UN SYSTÈME D'AVERTISSEMENT ET DE SIGNALISATION PUBLIC
Publication
Application
Priority
JP 2012004639 W 20120720
Abstract (en)
[origin: WO2014013530A1] The public address system 1 comprises a transmission medium (4) including a main transmission path (4-1) and at least one branch transmission path (4-2) branching from the main transmission path (4-1), a plurality of loudspeakers (3) connected to the transmission medium (4), a first branch monitoring device (10a), and a second branch monitoring device (10b). The second branch monitoring device (10b) only transmits a transmission signal (S-2) from the main transmission path (4-1) into the branch transmission path (4-2) when the second branch monitoring device (10b) has detected that there is no transmission of the transmission signal (S-1) from the branch transmission path (4-2) to the second branch monitoring device (10b).
IPC 8 full level
G08B 29/06 (2006.01); H04R 27/00 (2006.01); H04R 29/00 (2006.01)
CPC (source: EP)
G08B 29/06 (2013.01); H04R 27/00 (2013.01); H04R 29/007 (2013.01)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
WO 2014013530 A1 20140123; EP 2875652 A1 20150527; EP 2875652 B1 20191204; JP 2015525985 A 20150907; JP 6033397 B2 20161130
DOCDB simple family (application)
JP 2012004639 W 20120720; EP 12745575 A 20120720; JP 2015502985 A 20120720