EP 0311036 B1 19950322 - Surveillance device for articles and or persons.
Title (en)
Surveillance device for articles and or persons.
Title (de)
Vorrichtung zur Überwachung von Sachen und/oder Personen.
Title (fr)
Dispositif de surveillance d'articles et ou de personnes.
Publication
Application
Priority
DE 3733808 A 19871007
Abstract (en)
[origin: JPH01133196A] PURPOSE: To surely protect an object as a target by providing a decoder for outputting alarm signals to an alarming circuit when the prescribed information contents of coded RF signals are inputted. CONSTITUTION: The coded RF signals are received by a protective dag 15 and reach a converter 21 inside the decoder 20. After a code word is read in the converter 21, it is parallelly transmitted to a comparator 22 and the cord word is compared with the cord word supplied through a coding switch 23. Then, comparison signals from the comparator 22 are inputted to an OR gate 24. In the meantime, the inverted input of the gate 24 is led through a protective element 14 to logic 1. Thus, when the output of the gate 24 reaches a high level and alarm sound is generated in the alarming circuit 30 and also when the logic 1 for which the element 14 is disconnected is not more than the input of the gate 24 any more, the alarm signals are rung.
IPC 1-7
IPC 8 full level
G08B 13/24 (2006.01); G08B 13/14 (2006.01)
CPC (source: EP US)
G08B 13/14 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH DE ES FR GB GR IT LI LU NL SE
DOCDB simple family (publication)
EP 0311036 A2 19890412; EP 0311036 A3 19910116; EP 0311036 B1 19950322; AT E120296 T1 19950415; DE 3733808 A1 19890511; DE 3733808 C2 19920312; DE 3853395 D1 19950427; JP H01133196 A 19890525; US 4851815 A 19890725
DOCDB simple family (application)
EP 88116455 A 19881005; AT 88116455 T 19881005; DE 3733808 A 19871007; DE 3853395 T 19881005; JP 25468088 A 19881007; US 15913288 A 19880223