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GB9005751D0 - Intrusion detection system and signal processing circuitry therefor - Google Patents

Intrusion detection system and signal processing circuitry therefor

Info

Publication number
GB9005751D0
GB9005751D0 GB909005751A GB9005751A GB9005751D0 GB 9005751 D0 GB9005751 D0 GB 9005751D0 GB 909005751 A GB909005751 A GB 909005751A GB 9005751 A GB9005751 A GB 9005751A GB 9005751 D0 GB9005751 D0 GB 9005751D0
Authority
GB
United Kingdom
Prior art keywords
signal processing
detection system
processing circuitry
intrusion detection
circuitry therefor
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.)
Pending
Application number
GB909005751A
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.)
Geoquip Ltd
Original Assignee
Geoquip Ltd
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 Geoquip Ltd filed Critical Geoquip Ltd
Priority to GB909005751A priority Critical patent/GB9005751D0/en
Publication of GB9005751D0 publication Critical patent/GB9005751D0/en
Priority to GB9105419A priority patent/GB2242745A/en
Priority to EP19910302176 priority patent/EP0448290A3/en
Pending legal-status Critical Current

Links

GB909005751A 1990-03-14 1990-03-14 Intrusion detection system and signal processing circuitry therefor Pending GB9005751D0 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB909005751A GB9005751D0 (en) 1990-03-14 1990-03-14 Intrusion detection system and signal processing circuitry therefor
GB9105419A GB2242745A (en) 1990-03-14 1991-03-14 Intrusion detection system and signal processing circuitry therefor
EP19910302176 EP0448290A3 (en) 1990-03-14 1991-03-14 Intrusion detection system and signal processing circuitry therefor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB909005751A GB9005751D0 (en) 1990-03-14 1990-03-14 Intrusion detection system and signal processing circuitry therefor

Publications (1)

Publication Number Publication Date
GB9005751D0 true GB9005751D0 (en) 1990-05-09

Family

ID=10672620

Family Applications (2)

Application Number Title Priority Date Filing Date
GB909005751A Pending GB9005751D0 (en) 1990-03-14 1990-03-14 Intrusion detection system and signal processing circuitry therefor
GB9105419A Withdrawn GB2242745A (en) 1990-03-14 1991-03-14 Intrusion detection system and signal processing circuitry therefor

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB9105419A Withdrawn GB2242745A (en) 1990-03-14 1991-03-14 Intrusion detection system and signal processing circuitry therefor

Country Status (2)

Country Link
EP (1) EP0448290A3 (en)
GB (2) GB9005751D0 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5194848A (en) * 1991-09-09 1993-03-16 Hitek-Protek Systems Inc. Intrusion detection apparatus having multiple channel signal processing
EP0612047A1 (en) * 1993-02-19 1994-08-24 GEUTEBRÜCK GmbH Method for the evaluation of electroacoustic signals
CA2157894C (en) * 1993-03-10 2001-05-22 Reginald J. Kerr Intrusion detection apparatus
US7881882B2 (en) * 2006-09-25 2011-02-01 Ut-Battelle, Llc Apparatus and method for detecting tampering in flexible structures

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4023156A (en) * 1975-01-30 1977-05-10 American District Telegraph Company Alarm system for detecting disturbance of a solid medium
GB2045494B (en) * 1979-02-23 1983-04-20 Elliott Brothers London Ltd Intruder alarm system
US4365239A (en) * 1980-11-20 1982-12-21 Stellar Systems, Inc. Intrusion warning system
US4845464A (en) * 1988-08-09 1989-07-04 Clifford Electronics, Inc. Programmable sensor apparatus
GB2221990B (en) * 1988-08-17 1992-04-08 Shorrock Ltd Intrusion detection system

Also Published As

Publication number Publication date
EP0448290A2 (en) 1991-09-25
GB9105419D0 (en) 1991-05-01
EP0448290A3 (en) 1992-09-30
GB2242745A (en) 1991-10-09

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