FR2116511A1 - - Google Patents

Info

Publication number
FR2116511A1
FR2116511A1 FR7143360A FR7143360A FR2116511A1 FR 2116511 A1 FR2116511 A1 FR 2116511A1 FR 7143360 A FR7143360 A FR 7143360A FR 7143360 A FR7143360 A FR 7143360A FR 2116511 A1 FR2116511 A1 FR 2116511A1
Authority
FR
France
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
FR7143360A
Other languages
French (fr)
Other versions
FR2116511B1 (es
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.)
Knogo Corp
Original Assignee
Knogo Corp
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 Knogo Corp filed Critical Knogo Corp
Publication of FR2116511A1 publication Critical patent/FR2116511A1/fr
Application granted granted Critical
Publication of FR2116511B1 publication Critical patent/FR2116511B1/fr
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/22—Electrical actuation
    • G08B13/24—Electrical actuation by interference with electromagnetic field distribution
    • G08B13/2402—Electronic Article Surveillance [EAS], i.e. systems using tags for detecting removal of a tagged item from a secure area, e.g. tags for detecting shoplifting
    • G08B13/2465—Aspects related to the EAS system, e.g. system components other than tags
    • G08B13/2488—Timing issues, e.g. synchronising measures to avoid signal collision, with multiple emitters or a single emitter and receiver
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/22—Electrical actuation
    • G08B13/24—Electrical actuation by interference with electromagnetic field distribution
    • G08B13/2402—Electronic Article Surveillance [EAS], i.e. systems using tags for detecting removal of a tagged item from a secure area, e.g. tags for detecting shoplifting
    • G08B13/2465—Aspects related to the EAS system, e.g. system components other than tags
    • G08B13/2468—Antenna in system and the related signal processing
    • G08B13/2471—Antenna signal processing by receiver or emitter

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Computer Security & Cryptography (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • Burglar Alarm Systems (AREA)
FR7143360A 1970-12-02 1971-12-02 Expired FR2116511B1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US9444170A 1970-12-02 1970-12-02

Publications (2)

Publication Number Publication Date
FR2116511A1 true FR2116511A1 (es) 1972-07-13
FR2116511B1 FR2116511B1 (es) 1975-02-21

Family

ID=22245221

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7143360A Expired FR2116511B1 (es) 1970-12-02 1971-12-02

Country Status (9)

Country Link
US (1) US3696379A (es)
AU (1) AU433043B2 (es)
BE (1) BE775869A (es)
CA (1) CA954202A (es)
DE (1) DE2159606A1 (es)
FR (1) FR2116511B1 (es)
GB (1) GB1329194A (es)
IT (1) IT946253B (es)
ZA (1) ZA717336B (es)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2384306A1 (fr) * 1977-03-14 1978-10-13 Lichtblau George Circuit d'elimination de frequences de battement pour dispositifs electroniques de securite
FR2392451A1 (fr) * 1977-04-28 1978-12-22 Parmeko Ltd Systemes de detection pour epier la position d'un article dans une zone de controle
FR2398357A1 (fr) * 1977-07-19 1979-02-16 Nedap Nv Dispositif de detection electromagnetique
FR2405527A1 (fr) * 1977-10-05 1979-05-04 Lichtblau George Circuit d'annulation du bruit pour un dispositif electronique de securite

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3919704A (en) * 1972-12-04 1975-11-11 Check Mate Systems Inc System and method for detecting unauthorized removal of goods from protected premises, and magnet detecting apparatus suitable for use therein
NL161904C (nl) * 1973-04-13 Knogo Corp Diefstal-detectiestelsel.
US3828337A (en) * 1973-08-20 1974-08-06 G Lichtblau Noise rejection circuitry
US4063230A (en) * 1975-06-12 1977-12-13 The Magnavox Company Balanced field theft detection system
DE2732543C3 (de) * 1977-07-19 1980-08-07 Precitec Gesellschaft Fuer Praezisionstechnik Und Elektronik Mbh & Co Entwicklungs- Und Vertriebs-Kg, 7570 Baden-Baden Vorrichtung zur Erfassung von sich im Gebiet einer Grenzfläche befindenden Objekten
US4135184A (en) * 1977-08-31 1979-01-16 Knogo Corporation Electronic theft detection system for monitoring wide passageways
US4321586A (en) * 1980-08-21 1982-03-23 Knogo Corporation Article theft detection
US4484182A (en) * 1981-07-01 1984-11-20 Shorrock Developments Limited Intruder detection apparatus for functioning free of disturbance while in close proximity to high-power pulse-moldulated radars
AT405697B (de) * 1984-04-23 1999-10-25 Lichtblau G J Deaktivierbarer resonanzschaltkreis
AU586692B2 (en) * 1985-07-09 1989-07-20 S.P.C. Limited Packaging process
US5047750A (en) * 1990-03-09 1991-09-10 Hector Larry F Non-intrusive infant security system
US5373301A (en) * 1993-01-04 1994-12-13 Checkpoint Systems, Inc. Transmit and receive antenna having angled crossover elements
US5602556A (en) * 1995-06-07 1997-02-11 Check Point Systems, Inc. Transmit and receive loop antenna
AU2546597A (en) * 1996-04-10 1997-10-29 Sentry Technology Corporation Electronic article surveillance system
US5990791A (en) * 1997-10-22 1999-11-23 William B. Spargur Anti-theft detection system
US6147420A (en) * 1997-12-16 2000-11-14 Lear Automotive Dearborn, Inc. Wireless switching system
US7183917B2 (en) * 2003-05-19 2007-02-27 Checkpoint Systems, Inc. EAS/RFID identification hard tags
US7380711B2 (en) * 2004-07-23 2008-06-03 Checkpoint Systems, Inc. Self-check system and method for protecting digital media
EP1760625A1 (en) * 2005-08-29 2007-03-07 Datamars SA RFID system and a method for improving the detection efficiency of the RFID system
GB201116932D0 (en) * 2011-10-01 2011-11-16 Young Peter J Device to detect unattended open door or draw
JP7304895B2 (ja) 2018-05-17 2023-07-07 チェックポイント・システムズ・インコーポレイテッド デュアルハードタグ

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2693525A (en) * 1951-01-17 1954-11-02 Gen Railway Signal Co Inductive control system
US2774060A (en) * 1953-06-15 1956-12-11 Richard B Thompson Detecting means for stolen goods
US3299424A (en) * 1965-05-07 1967-01-17 Jorgen P Vinding Interrogator-responder identification system
US3500373A (en) * 1966-05-06 1970-03-10 Nat Bank Of North America The Method and apparatus for article theft detection

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2384306A1 (fr) * 1977-03-14 1978-10-13 Lichtblau George Circuit d'elimination de frequences de battement pour dispositifs electroniques de securite
FR2392451A1 (fr) * 1977-04-28 1978-12-22 Parmeko Ltd Systemes de detection pour epier la position d'un article dans une zone de controle
FR2398357A1 (fr) * 1977-07-19 1979-02-16 Nedap Nv Dispositif de detection electromagnetique
FR2405527A1 (fr) * 1977-10-05 1979-05-04 Lichtblau George Circuit d'annulation du bruit pour un dispositif electronique de securite

Also Published As

Publication number Publication date
BE775869A (fr) 1972-03-16
GB1329194A (en) 1973-09-05
AU3533971A (en) 1973-03-15
IT946253B (it) 1973-05-21
US3696379A (en) 1972-10-03
ZA717336B (en) 1972-07-26
CA954202A (en) 1974-09-03
AU433043B2 (en) 1973-03-15
FR2116511B1 (es) 1975-02-21
DE2159606A1 (de) 1972-06-15

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Legal Events

Date Code Title Description
ST Notification of lapse