EP0919972A3 - Wireless alarm system with radiofrequency transmission of coded signals - Google Patents

Wireless alarm system with radiofrequency transmission of coded signals Download PDF

Info

Publication number
EP0919972A3
EP0919972A3 EP98121617A EP98121617A EP0919972A3 EP 0919972 A3 EP0919972 A3 EP 0919972A3 EP 98121617 A EP98121617 A EP 98121617A EP 98121617 A EP98121617 A EP 98121617A EP 0919972 A3 EP0919972 A3 EP 0919972A3
Authority
EP
European Patent Office
Prior art keywords
coded signals
alarm system
alarm
wireless alarm
radiofrequency transmission
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP98121617A
Other languages
German (de)
French (fr)
Other versions
EP0919972A2 (en
Inventor
Giuseppe Simonazzi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Meta System SpA
Original Assignee
Meta System SpA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Meta System SpA filed Critical Meta System SpA
Publication of EP0919972A2 publication Critical patent/EP0919972A2/en
Publication of EP0919972A3 publication Critical patent/EP0919972A3/en
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B25/00—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems
    • G08B25/01—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium
    • G08B25/10—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium using wireless transmission systems

Abstract

Radiofrequency-based alarm sensors (2, 3) send their coded signals of possible intrusion to the alarm gear-case (1) which, even if it is switched off, is so set as to emit an acoustic and/or light signal of environmental control.
Once the alarm is switched on, the gear-case (1) receiving stimulation from the sensors, signals the intrusion causin the emission of the alarm.
EP98121617A 1997-11-26 1998-11-12 Wireless alarm system with radiofrequency transmission of coded signals Withdrawn EP0919972A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITRE970058 1997-08-01
ITRE970058 IT238433Y1 (en) 1997-11-26 1997-11-26 SYSTEM WITHOUT SIGNALING / ALARM WIRES, WITH RADIOFREQUENCY CODED SIGNALS TRANSMISSION

Publications (2)

Publication Number Publication Date
EP0919972A2 EP0919972A2 (en) 1999-06-02
EP0919972A3 true EP0919972A3 (en) 1999-12-01

Family

ID=11399093

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98121617A Withdrawn EP0919972A3 (en) 1997-11-26 1998-11-12 Wireless alarm system with radiofrequency transmission of coded signals

Country Status (2)

Country Link
EP (1) EP0919972A3 (en)
IT (1) IT238433Y1 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4581606A (en) * 1982-08-30 1986-04-08 Isotec Industries Limited Central monitor for home security system
US5004999A (en) * 1989-12-21 1991-04-02 Honeywell, Inc. Extended RF range alarm system
FR2691274A1 (en) * 1992-05-13 1993-11-19 Seb Sa Surveillance system for household - has central control receiving coded radio signals from remote units and sending alarm to siren
US5543778A (en) * 1993-04-19 1996-08-06 Code-Alarm, Inc. Security system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4581606A (en) * 1982-08-30 1986-04-08 Isotec Industries Limited Central monitor for home security system
US5004999A (en) * 1989-12-21 1991-04-02 Honeywell, Inc. Extended RF range alarm system
FR2691274A1 (en) * 1992-05-13 1993-11-19 Seb Sa Surveillance system for household - has central control receiving coded radio signals from remote units and sending alarm to siren
US5543778A (en) * 1993-04-19 1996-08-06 Code-Alarm, Inc. Security system

Also Published As

Publication number Publication date
ITRE970058V0 (en) 1997-11-26
EP0919972A2 (en) 1999-06-02
ITRE970058U1 (en) 1999-05-26
IT238433Y1 (en) 2000-11-13

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