GB2237668B - Security signalling system - Google Patents
Security signalling systemInfo
- Publication number
- GB2237668B GB2237668B GB8922408A GB8922408A GB2237668B GB 2237668 B GB2237668 B GB 2237668B GB 8922408 A GB8922408 A GB 8922408A GB 8922408 A GB8922408 A GB 8922408A GB 2237668 B GB2237668 B GB 2237668B
- Authority
- GB
- United Kingdom
- Prior art keywords
- signalling system
- security
- security signalling
- signalling
- 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.)
- Expired - Fee Related
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
-
- 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
- G08B25/009—Signalling of the alarm condition to a substation whose identity is signalled to a central station, e.g. relaying alarm signals in order to extend communication range
Landscapes
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Mobile Radio Communication Systems (AREA)
- Alarm Systems (AREA)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB8922408A GB2237668B (en) | 1989-10-05 | 1989-10-05 | Security signalling system |
DE19904030993 DE4030993A1 (en) | 1989-10-05 | 1990-10-01 | SECURITY SIGNALING SYSTEM |
FR9012332A FR2653921B1 (en) | 1989-10-05 | 1990-10-05 | SECURITY SIGNALING SYSTEM, IN PARTICULAR FOR GUARANTEEING THE SECURITY OF A FUNCTIONAL VEHICLE. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB8922408A GB2237668B (en) | 1989-10-05 | 1989-10-05 | Security signalling system |
Publications (3)
Publication Number | Publication Date |
---|---|
GB8922408D0 GB8922408D0 (en) | 1989-11-22 |
GB2237668A GB2237668A (en) | 1991-05-08 |
GB2237668B true GB2237668B (en) | 1993-06-30 |
Family
ID=10664073
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB8922408A Expired - Fee Related GB2237668B (en) | 1989-10-05 | 1989-10-05 | Security signalling system |
Country Status (3)
Country | Link |
---|---|
DE (1) | DE4030993A1 (en) |
FR (1) | FR2653921B1 (en) |
GB (1) | GB2237668B (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4318441A1 (en) * | 1993-06-03 | 1994-12-08 | Sel Alcatel Ag | Emergency call system |
DE4444089C2 (en) * | 1994-12-10 | 1998-09-17 | Rohde & Schwarz | Transceiver terminal for a communication system |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2131990B (en) * | 1982-12-02 | 1985-12-11 | Racal Security Ltd | Remote system systems |
US4611198A (en) * | 1985-09-19 | 1986-09-09 | Levinson Samuel H | Security and communication system |
-
1989
- 1989-10-05 GB GB8922408A patent/GB2237668B/en not_active Expired - Fee Related
-
1990
- 1990-10-01 DE DE19904030993 patent/DE4030993A1/en not_active Withdrawn
- 1990-10-05 FR FR9012332A patent/FR2653921B1/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
FR2653921A1 (en) | 1991-05-03 |
FR2653921B1 (en) | 1994-04-29 |
DE4030993A1 (en) | 1991-04-18 |
GB8922408D0 (en) | 1989-11-22 |
GB2237668A (en) | 1991-05-08 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 19961005 |