EP 0366527 B1 19930324 - SECURITY SYSTEM WITH RADIOELECTRIC TRANSMISSION
Title (en)
SECURITY SYSTEM WITH RADIOELECTRIC TRANSMISSION
Publication
Application
Priority
FR 8813920 A 19881025
Abstract (en)
[origin: EP0366527A1] The proposed device consists in that, each transmitter (1) associated with an alarm detection device (2) comprises two devices (3) and (4) for transmitting the alarm signal in such a way as to transmit two alarm signals which are identical but separated in time by a certain period. On reception, an alarm is recognised not only when both signals are received, but also when a single signal is received. The coding of the two transmission devices into the alarm signals permits determination of the transmission device (3) or (4) which is defective. The proposed device is applicable to security systems. <IMAGE>
IPC 1-7
IPC 8 full level
G08B 25/00 (2006.01); G08B 25/10 (2006.01); G08B 29/00 (2006.01); G08B 29/16 (2006.01); G08C 25/00 (2006.01)
CPC (source: EP)
G08B 25/10 (2013.01); G08B 29/16 (2013.01)
Citation (examination)
Patent Abstracts of Japan, vol. 3, no. 127 (E-146), 23 octobre 1979
Designated contracting state (EPC)
AT BE CH DE ES FR GB GR IT LI LU NL SE
DOCDB simple family (publication)
EP 0366527 A1 19900502; EP 0366527 B1 19930324; AT E87385 T1 19930415; DE 68905567 D1 19930429; DE 68905567 T2 19930826; FR 2638267 A1 19900427; FR 2638267 B1 19901221
DOCDB simple family (application)
EP 89402891 A 19891019; AT 89402891 T 19891019; DE 68905567 T 19891019; FR 8813920 A 19881025