EP0919972A3 - Wireless alarm system with radiofrequency transmission of coded signals - Google Patents
Wireless alarm system with radiofrequency transmission of coded signals Download PDFInfo
- 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- Withdrawn
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
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Burglar Alarm Systems (AREA)
- Transmitters (AREA)
Abstract
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EP98121617A Withdrawn EP0919972A3 (en) | 1997-11-26 | 1998-11-12 | Wireless alarm system with radiofrequency transmission of coded signals |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)
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 |
-
1997
- 1997-11-26 IT ITRE970058 patent/IT238433Y1/en active IP Right Grant
-
1998
- 1998-11-12 EP EP98121617A patent/EP0919972A3/en not_active Withdrawn
Patent Citations (4)
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 |
---|---|
ITRE970058U1 (en) | 1999-05-26 |
ITRE970058V0 (en) | 1997-11-26 |
IT238433Y1 (en) | 2000-11-13 |
EP0919972A2 (en) | 1999-06-02 |
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Legal Events
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STAA | Information on the status of an ep patent application or granted ep patent |
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18D | Application deemed to be withdrawn |
Effective date: 20000603 |