GB0029099D0 - Detection system - Google Patents

Detection system

Info

Publication number
GB0029099D0
GB0029099D0 GB0029099A GB0029099A GB0029099D0 GB 0029099 D0 GB0029099 D0 GB 0029099D0 GB 0029099 A GB0029099 A GB 0029099A GB 0029099 A GB0029099 A GB 0029099A GB 0029099 D0 GB0029099 D0 GB 0029099D0
Authority
GB
United Kingdom
Prior art keywords
detection system
detection
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.)
Granted
Application number
GB0029099A
Other versions
GB2361058B (en
GB2361058A (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.)
British Telecommunications PLC
Original Assignee
British Telecommunications PLC
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 GBGB9906208.5A external-priority patent/GB9906208D0/en
Priority claimed from GBGB9907321.5A external-priority patent/GB9907321D0/en
Application filed by British Telecommunications PLC filed Critical British Telecommunications PLC
Publication of GB0029099D0 publication Critical patent/GB0029099D0/en
Publication of GB2361058A publication Critical patent/GB2361058A/en
Application granted granted Critical
Publication of GB2361058B publication Critical patent/GB2361058B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/80—Optical aspects relating to the use of optical transmission for specific applications, not provided for in groups H04B10/03 - H04B10/70, e.g. optical power feeding or optical transmission through water
    • H04B10/85—Protection from unauthorised access, e.g. eavesdrop protection
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/18—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength
    • G08B13/181—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using active radiation detection systems
    • G08B13/183—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using active radiation detection systems by interruption of a radiation beam or barrier
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/18—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength
    • G08B13/181—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using active radiation detection systems
    • G08B13/187—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using active radiation detection systems by interference of a radiation field

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Electromagnetism (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Burglar Alarm Systems (AREA)
  • Geophysics And Detection Of Objects (AREA)
GB0029099A 1999-03-17 2000-03-15 Detection system Expired - Fee Related GB2361058B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB9906208.5A GB9906208D0 (en) 1999-03-17 1999-03-17 Detection system
GBGB9907321.5A GB9907321D0 (en) 1999-03-29 1999-03-29 Detection system

Publications (3)

Publication Number Publication Date
GB0029099D0 true GB0029099D0 (en) 2001-03-21
GB2361058A GB2361058A (en) 2001-10-10
GB2361058B GB2361058B (en) 2002-03-20

Family

ID=26315294

Family Applications (2)

Application Number Title Priority Date Filing Date
GB0029099A Expired - Fee Related GB2361058B (en) 1999-03-17 2000-03-15 Detection system
GB0029101A Expired - Fee Related GB2361308B (en) 1999-03-17 2000-03-15 Detection system

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB0029101A Expired - Fee Related GB2361308B (en) 1999-03-17 2000-03-15 Detection system

Country Status (2)

Country Link
FR (2) FR2801400B1 (en)
GB (2) GB2361058B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2709080A1 (en) * 2012-09-13 2014-03-19 MBDA UK Limited Room occupancy sensing apparatus and method
GB2505896B (en) * 2012-09-13 2015-09-02 Mbda Uk Ltd Room occupancy sensing apparatus and method
CN104756165B (en) * 2012-09-13 2017-09-22 Mbda英国有限公司 Room takes sensing device further and method

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2492136A1 (en) * 1980-10-13 1982-04-16 Commissariat Energie Atomique INVIOLABLE BARRIER FOR PROTECTION AGAINST INTRUSIONS
WO1983001855A1 (en) * 1981-11-19 1983-05-26 Minnesota Mining & Mfg Optically based intrusion detector
DE3447131A1 (en) * 1984-12-22 1986-06-26 Telenot Electronic GmbH, 7080 Aalen ROOM PROTECTION SYSTEM
DE3530646A1 (en) * 1985-08-28 1987-03-12 Telenot Electronic Gmbh AREA SECURING
GB2217441A (en) * 1987-12-15 1989-10-25 Plessey Co Plc Alarm system for enclosures
EP0388352A1 (en) * 1989-03-15 1990-09-19 Elesta Ag Elektronik One way light barrier arrangement
US5142152A (en) * 1991-01-02 1992-08-25 The Stanley Works Sliding door sensor
US5233185A (en) * 1992-02-28 1993-08-03 Gmi Holdings, Inc. Light beam detector for door openers using fiber optics
US5326028A (en) * 1992-08-24 1994-07-05 Sanyo Electric Co., Ltd. System for detecting indoor conditions and air conditioner incorporating same
CA2152628C (en) * 1992-12-24 1999-02-02 Paul David Townsend System and method for key distribution using quantum cryptography
JPH10504694A (en) * 1994-08-18 1998-05-06 ブリティッシュ・テレコミュニケーションズ・パブリック・リミテッド・カンパニー Quantum cryptography
US5886307A (en) * 1997-06-23 1999-03-23 Otis Elevator Company Safety detection system for sliding doors

Also Published As

Publication number Publication date
GB2361308A (en) 2001-10-17
GB2361058B (en) 2002-03-20
FR2801400B1 (en) 2003-02-07
GB2361058A (en) 2001-10-10
GB2361308B (en) 2002-04-10
FR2801400A1 (en) 2001-05-25
FR2801401A1 (en) 2001-05-25
GB0029101D0 (en) 2001-03-21

Similar Documents

Publication Publication Date Title
GB2355523B (en) Detection system
GB2369428B (en) Detection system
GB2350187B (en) Light detection system
EP1221148A4 (en) Tactiovisual distance-to-exit exit-finding system
AU4079700A (en) Distance detection system
EP1169255A4 (en) Obstruction detection system
GB0020962D0 (en) Detection warning system
GB9928232D0 (en) Detection system
GB9823186D0 (en) Detection system
GB9907271D0 (en) System
GB0005269D0 (en) Fire detection system
GB2361058B (en) Detection system
GB9924449D0 (en) Rapid drug detection system
GB9902087D0 (en) Detection means
GB2392111B (en) Hit detection system
GB2375831B (en) Ranging system
AU3016501A (en) Detection system
GB9911547D0 (en) Answerphone system
GB2390900B (en) Light detection system
GB9907321D0 (en) Detection system
GB9906208D0 (en) Detection system
GB9926192D0 (en) Detection system
GB9801995D0 (en) Detection system
IL128832A0 (en) Intrusion detection system
NZ514127A (en) Obstruction detection system

Legal Events

Date Code Title Description
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20090315