GB8701956D0 - Security system - Google Patents

Security system

Info

Publication number
GB8701956D0
GB8701956D0 GB878701956A GB8701956A GB8701956D0 GB 8701956 D0 GB8701956 D0 GB 8701956D0 GB 878701956 A GB878701956 A GB 878701956A GB 8701956 A GB8701956 A GB 8701956A GB 8701956 D0 GB8701956 D0 GB 8701956D0
Authority
GB
United Kingdom
Prior art keywords
security system
security
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Withdrawn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
GB878701956A
Other versions
GB2186404A (en
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.)
Notifier Co
Original Assignee
Notifier Co
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
Priority claimed from US06/826,726 external-priority patent/US4734680A/en
Application filed by Notifier Co filed Critical Notifier Co
Publication of GB8701956D0 publication Critical patent/GB8701956D0/en
Publication of GB2186404A publication Critical patent/GB2186404A/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Withdrawn legal-status Critical Current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
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B29/00—Checking or monitoring of signalling or alarm systems; Prevention or correction of operating errors, e.g. preventing unauthorised operation
    • G08B29/12—Checking intermittently signalling or alarm systems
    • G08B29/14—Checking intermittently signalling or alarm systems checking the detection circuits
GB08701956A 1986-02-06 1987-01-29 Security system with signal accuracy checking Withdrawn GB2186404A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US82672586A 1986-02-06 1986-02-06
US06/826,726 US4734680A (en) 1986-02-06 1986-02-06 Detection system with randomized transmissions

Publications (2)

Publication Number Publication Date
GB8701956D0 true GB8701956D0 (en) 1987-03-04
GB2186404A GB2186404A (en) 1987-08-12

Family

ID=27125022

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08701956A Withdrawn GB2186404A (en) 1986-02-06 1987-01-29 Security system with signal accuracy checking

Country Status (2)

Country Link
DE (1) DE3642951A1 (en)
GB (1) GB2186404A (en)

Families Citing this family (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2621723A1 (en) * 1987-10-13 1989-04-14 Michel Baudoin METHOD FOR TAMPERING GOODS AND / OR PEOPLE
GB8726830D0 (en) * 1987-11-17 1987-12-23 Martin J A Monitoring system
GB8729881D0 (en) * 1987-12-22 1988-02-03 Zone Technology Ltd Detector unit & system
EP0325433B1 (en) * 1988-01-21 1996-09-11 Matsushita Electric Works, Ltd. Wireless transmission-reception control system
DE3832667A1 (en) * 1988-09-27 1990-04-05 Telefunken Electronic Gmbh SAFETY DEVICE
FR2638268B1 (en) * 1988-10-25 1994-02-11 Cerberus Guinard DEVICES FOR ALLOWING DISCRIMINATION BETWEEN SEVERAL SIMULTANEOUS PHENOMENAS
GB8907830D0 (en) * 1989-04-07 1989-05-24 Payrise Ltd Alarm systems
GB2233789A (en) * 1989-05-04 1991-01-16 Dolphin Hitec Limited Electronic security apparatus
NL9000606A (en) * 1990-03-16 1991-10-16 Ericsson Radio Systems Bv SYSTEM FOR THE TRANSMISSION OF ALARM SIGNALS.
FR2661791A1 (en) * 1990-05-07 1991-11-08 Electrolux Sa METHOD FOR TRANSMITTING A NUMERICALLY ENCODED MESSAGE AND TRANSMISSION SYSTEM.
IT9004965U1 (en) * 1990-12-07 1992-06-08 G P B Beghelli S R L Ora Begnelli S R L IMPROVEMENT IN INDEPENDENT EMERGENCY LIGHTING SYSTEMS WITH FIRE, HARMFUL GAS, AIR POLLUTION INDICATORS AND SIMILAR
FR2674658A1 (en) * 1991-03-28 1992-10-02 Fusilier Jean Marie Method for transmission and for remote transmission in blind random mode between several transmitters and receivers
US5382943A (en) * 1991-07-31 1995-01-17 Tanaka; Mutuo Remote monitoring unit
EP0638878B1 (en) * 1991-10-11 1997-05-07 Advanced Mining Software Limited Location system
FR2691274B1 (en) * 1992-05-13 1996-08-02 Seb Sa SENSOR, SURVEILLANCE CENTER AND HOME MONITORING NETWORK.
SG84488A1 (en) * 1992-10-09 2001-11-20 Mutuo Tanaka Remote monitoring unit
CA2124053C (en) * 1993-05-24 1999-03-30 Henry Petrie Mcnair Remote temperature control system
US5635907A (en) * 1993-08-10 1997-06-03 Bernard; Hermanus A. Location system
DE19505199A1 (en) * 1995-02-16 1996-08-29 Wolfgang Dipl Ing Sachs Anti-theft radio alarm installation with in-built security
US6088659A (en) 1997-09-11 2000-07-11 Abb Power T&D Company Inc. Automated meter reading system
DE19834934C2 (en) * 1998-07-29 2000-08-31 Sikom Sicherheits Und Kommunik Process for the secure transmission of data
US6700902B1 (en) 1998-10-19 2004-03-02 Elster Electricity, Llc Method and system for improving wireless data packet delivery
US6297734B1 (en) * 1999-09-23 2001-10-02 Northrop Grumman Corporation Randomization of transmit time
US6844816B1 (en) * 1999-10-05 2005-01-18 Bi Incorporated Authentication techniques in a monitoring system
GB2393827B (en) 2002-10-04 2005-11-16 Michael John Leck Monitor system
US7702594B2 (en) 2004-09-24 2010-04-20 Elster Electricity, Llc System and method for automated configuration of meters
US7742430B2 (en) 2004-09-24 2010-06-22 Elster Electricity, Llc System for automated management of spontaneous node migration in a distributed fixed wireless network
US8073384B2 (en) 2006-12-14 2011-12-06 Elster Electricity, Llc Optimization of redundancy and throughput in an automated meter data collection system using a wireless network
US8320302B2 (en) 2007-04-20 2012-11-27 Elster Electricity, Llc Over the air microcontroller flash memory updates
NZ586190A (en) 2007-12-26 2013-05-31 Elster Electricity Llc A utility meter network wherein meters can transmit electrical and other readings to a collector by using other meters as repeaters
US8525692B2 (en) 2008-06-13 2013-09-03 Elster Solutions, Llc Techniques for limiting demand from an electricity meter with an installed relay

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE362974B (en) * 1973-03-12 1973-12-27 Securitas Ab Bevaknings
CA1045722A (en) * 1974-10-21 1979-01-02 James E. Snyder Communications system
DE3213272C1 (en) * 1982-04-08 1983-10-13 Siemens AG, 1000 Berlin und 8000 München Method for increasing immunity to interference in the wireless transmission of information
DE3223100C2 (en) * 1982-06-21 1986-08-07 Siemens AG, 1000 Berlin und 8000 München Address-free fault location in transmission links for digital signals
DE3240490A1 (en) * 1982-11-02 1984-05-03 Friedrich Merk-Telefonbau GmbH, 8000 München Method for generating code words for an alarm system to be operated with increased security
GB2132800B (en) * 1982-12-02 1986-05-21 Racal Security Ltd Remote sensing systems
US4534025A (en) * 1983-02-24 1985-08-06 United Technologies Automotive, Inc. Vehicle multiplex system having protocol/format for secure communication transactions
US4575712A (en) * 1984-02-27 1986-03-11 Pittway Corporation Communication system

Also Published As

Publication number Publication date
DE3642951A1 (en) 1987-08-20
GB2186404A (en) 1987-08-12

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)