DK489387A - Modtageindretning - Google Patents

Modtageindretning

Info

Publication number
DK489387A
DK489387A DK489387A DK489387A DK489387A DK 489387 A DK489387 A DK 489387A DK 489387 A DK489387 A DK 489387A DK 489387 A DK489387 A DK 489387A DK 489387 A DK489387 A DK 489387A
Authority
DK
Denmark
Prior art keywords
receiving
coil
indicating device
alternating
coils
Prior art date
Application number
DK489387A
Other languages
English (en)
Other versions
DK489387D0 (da
DK167511B1 (da
Inventor
Leif Aasbrink
Original Assignee
Intermodulation & Safety Syst
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 Intermodulation & Safety Syst filed Critical Intermodulation & Safety Syst
Publication of DK489387D0 publication Critical patent/DK489387D0/da
Publication of DK489387A publication Critical patent/DK489387A/da
Application granted granted Critical
Publication of DK167511B1 publication Critical patent/DK167511B1/da

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING SYSTEMS, e.g. PERSONAL 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
    • G08B13/2405—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 characterised by the tag technology used
    • G08B13/2408—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 characterised by the tag technology used using ferromagnetic tags
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/08—Methods or arrangements for sensing record carriers, e.g. for reading patterns by means detecting the change of an electrostatic or magnetic field, e.g. by detecting change of capacitance between electrodes
    • G06K7/082—Methods or arrangements for sensing record carriers, e.g. for reading patterns by means detecting the change of an electrostatic or magnetic field, e.g. by detecting change of capacitance between electrodes using inductive or magnetic sensors
    • G06K7/083—Methods or arrangements for sensing record carriers, e.g. for reading patterns by means detecting the change of an electrostatic or magnetic field, e.g. by detecting change of capacitance between electrodes using inductive or magnetic sensors inductive
    • G06K7/086—Methods or arrangements for sensing record carriers, e.g. for reading patterns by means detecting the change of an electrostatic or magnetic field, e.g. by detecting change of capacitance between electrodes using inductive or magnetic sensors inductive sensing passive circuit, e.g. resonant circuit transponders
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/08—Methods or arrangements for sensing record carriers, e.g. for reading patterns by means detecting the change of an electrostatic or magnetic field, e.g. by detecting change of capacitance between electrodes
    • G06K7/082—Methods or arrangements for sensing record carriers, e.g. for reading patterns by means detecting the change of an electrostatic or magnetic field, e.g. by detecting change of capacitance between electrodes using inductive or magnetic sensors
    • G06K7/087—Methods or arrangements for sensing record carriers, e.g. for reading patterns by means detecting the change of an electrostatic or magnetic field, e.g. by detecting change of capacitance between electrodes using inductive or magnetic sensors flux-sensitive, e.g. magnetic, detectors
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING SYSTEMS, e.g. PERSONAL 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
    • G08B13/2474—Antenna or antenna activator geometry, arrangement or layout
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q7/00—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Artificial Intelligence (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Theoretical Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Computer Security & Cryptography (AREA)
  • Electromagnetism (AREA)
  • Signal Processing (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Burglar Alarm Systems (AREA)
  • Manufacture, Treatment Of Glass Fibers (AREA)
  • Saccharide Compounds (AREA)
  • Grinding Of Cylindrical And Plane Surfaces (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)
  • Pinball Game Machines (AREA)
  • Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Control And Other Processes For Unpacking Of Materials (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
DK489387A 1986-01-21 1987-09-18 Modtageindretning DK167511B1 (da)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
SE8600258A SE451166C (sv) 1986-01-21 1986-01-21 Mottagaranordning foer att detektera naervaro av en indikeringsanordning i en begraensad undersoekningszon
SE8600258 1986-01-21
SE8700015 1987-01-16
PCT/SE1987/000015 WO1987004551A1 (en) 1986-01-21 1987-01-16 Receiving device

Publications (3)

Publication Number Publication Date
DK489387D0 DK489387D0 (da) 1987-09-18
DK489387A true DK489387A (da) 1987-09-18
DK167511B1 DK167511B1 (da) 1993-11-08

Family

ID=20363169

Family Applications (1)

Application Number Title Priority Date Filing Date
DK489387A DK167511B1 (da) 1986-01-21 1987-09-18 Modtageindretning

Country Status (12)

Country Link
US (1) US4845509A (da)
EP (1) EP0238458B1 (da)
JP (1) JPH0782593B2 (da)
AT (1) ATE184723T1 (da)
AU (1) AU594745B2 (da)
CA (1) CA1278352C (da)
DE (1) DE3752291T2 (da)
DK (1) DK167511B1 (da)
ES (1) ES2136054T3 (da)
FI (1) FI86233C (da)
SE (1) SE451166C (da)
WO (1) WO1987004551A1 (da)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5103234A (en) * 1987-08-28 1992-04-07 Sensormatic Electronics Corporation Electronic article surveillance system
ZA889254B (en) * 1987-12-10 1990-08-29 Uniscan Ltd Powering and communication apparatus and method(s)
US5126749A (en) * 1989-08-25 1992-06-30 Kaltner George W Individually fed multiloop antennas for electronic security systems
USD318247S (en) 1989-09-11 1991-07-16 Checkpoint Systems, Inc. Electronic article surveillance antenna for a theft detection system
USD317272S (en) 1989-10-06 1991-06-04 Minnesota Mining And Manufacturing Company Electronic article surveillance unit
US5142292A (en) * 1991-08-05 1992-08-25 Checkpoint Systems, Inc. Coplanar multiple loop antenna for electronic article surveillance systems
US5404147A (en) * 1992-10-28 1995-04-04 Sensormatic Electronics Corporation EAS system loop antenna having three loops of different area
DE4436974B4 (de) * 1994-10-15 2004-04-01 Meto International Gmbh Markierungselement zur Sicherung von Artikeln gegen Diebstahl
DE4440314A1 (de) * 1994-11-11 1996-05-15 Esselte Meto Int Gmbh Markierungselement zur Sicherung von Artikeln gegen Diebstahl
FR2745103B1 (fr) * 1996-02-15 1998-04-03 Bourgogne Grasset Dispositif de rangement pour jetons de jeu
WO2006106192A1 (fr) 2005-04-07 2006-10-12 Gaming Partners International Procede de gestion d'une pluralite de lecteurs de jetons a puce electronique et equipements de mise en oeuvre dudit procede.
USD867192S1 (en) 2018-06-06 2019-11-19 Donald R. Sweeney Metal detector

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4016553A (en) * 1975-06-27 1977-04-05 Knogo Corporation Article detection system with near field electromagnetic wave control
US4118693A (en) * 1977-05-09 1978-10-03 Knogo Corporation Method and apparatus for producing uniform electromagnetic fields in an article detection system
SE429382B (sv) * 1977-05-09 1983-08-29 Knogo Corp Sett och apparat for detektering av obehorig passage av foremal genom en fragezon
US4135184A (en) * 1977-08-31 1979-01-16 Knogo Corporation Electronic theft detection system for monitoring wide passageways
US4243980A (en) * 1978-02-17 1981-01-06 Lichtblau G J Antenna system for electronic security installations
DK145169C (da) * 1978-08-09 1983-02-21 Security Prod Int Anlaeg til registrering af en passage af en genstand gennem etforudbestemt omraade
US4373163A (en) * 1980-07-14 1983-02-08 I.D. Engineering, Inc. Loop antenna for security systems
US4309697A (en) * 1980-10-02 1982-01-05 Sensormatic Electronics Corporation Magnetic surveillance system with odd-even harmonic and phase discrimination
GB2133660B (en) * 1982-11-09 1986-07-30 Tag Radionics Ltd Transponder detection systems
WO1985003793A1 (en) * 1984-02-15 1985-08-29 Intermodulation And Safety System Ab Method and system for detecting an indicating device
US4633250A (en) * 1985-01-07 1986-12-30 Allied Corporation Coplanar antenna for proximate surveillance systems

Also Published As

Publication number Publication date
FI86233B (fi) 1992-04-15
SE451166B (sv) 1987-09-07
AU6899487A (en) 1987-08-14
SE8600258D0 (sv) 1986-01-21
FI874087A7 (fi) 1987-09-18
JPS63502226A (ja) 1988-08-25
AU594745B2 (en) 1990-03-15
EP0238458A2 (en) 1987-09-23
SE451166C (sv) 1990-12-10
EP0238458A3 (en) 1989-10-04
DK489387D0 (da) 1987-09-18
FI874087A0 (fi) 1987-09-18
JPH0782593B2 (ja) 1995-09-06
CA1278352C (en) 1990-12-27
ATE184723T1 (de) 1999-10-15
EP0238458B1 (en) 1999-09-15
DK167511B1 (da) 1993-11-08
WO1987004551A1 (en) 1987-07-30
US4845509A (en) 1989-07-04
DE3752291D1 (de) 1999-10-21
FI86233C (fi) 1992-07-27
ES2136054T3 (es) 1999-11-16
DE3752291T2 (de) 2000-03-23
SE8600258L (sv) 1987-07-22

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Legal Events

Date Code Title Description
B1 Patent granted (law 1993)
PBP Patent lapsed

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