NL177945C - Voorwerpdetectiestelsel. - Google Patents

Voorwerpdetectiestelsel.

Info

Publication number
NL177945C
NL177945C NL7010224A NL7010224A NL177945C NL 177945 C NL177945 C NL 177945C NL 7010224 A NL7010224 A NL 7010224A NL 7010224 A NL7010224 A NL 7010224A NL 177945 C NL177945 C NL 177945C
Authority
NL
Netherlands
Prior art keywords
detection system
object detection
detection
Prior art date
Application number
NL7010224A
Other languages
English (en)
Dutch (nl)
Other versions
NL7010224A (de
NL177945B (nl
Inventor
J T Elder
D A Whrigt
Original Assignee
Minnesota Mining & Mfg
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 Minnesota Mining & Mfg filed Critical Minnesota Mining & Mfg
Publication of NL7010224A publication Critical patent/NL7010224A/xx
Publication of NL177945B publication Critical patent/NL177945B/xx
Application granted granted Critical
Publication of NL177945C publication Critical patent/NL177945C/xx

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
    • G08B13/2468—Antenna in system and the related signal processing
    • G08B13/2477—Antenna or antenna activator circuit
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/72—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables
    • 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
    • G08B13/2428—Tag details
    • G08B13/2437—Tag layered structure, processes for making layered tags
    • 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
    • G08B13/2428—Tag details
    • G08B13/2437—Tag layered structure, processes for making layered tags
    • G08B13/2442—Tag materials and material properties thereof, e.g. magnetic material details
    • 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
    • G08B13/2474—Antenna or antenna activator geometry, arrangement or layout

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Computer Security & Cryptography (AREA)
  • Electromagnetism (AREA)
  • Signal Processing (AREA)
  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Electrochemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Burglar Alarm Systems (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Radar Systems Or Details Thereof (AREA)
NL7010224A 1969-07-11 1970-07-10 Voorwerpdetectiestelsel. NL177945C (nl)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US84097369A 1969-07-11 1969-07-11
US88587469A 1969-12-17 1969-12-17
US5084070A 1970-06-29 1970-06-29

Publications (3)

Publication Number Publication Date
NL7010224A NL7010224A (de) 1971-01-13
NL177945B NL177945B (nl) 1985-07-16
NL177945C true NL177945C (nl) 1985-12-16

Family

ID=27367841

Family Applications (2)

Application Number Title Priority Date Filing Date
NL7010224A NL177945C (nl) 1969-07-11 1970-07-10 Voorwerpdetectiestelsel.
NL8401703A NL180359C (nl) 1969-07-11 1984-05-28 Inrichting voor het in een detectiegebied opwekken van een electromagnetisch ondervragingsveld.

Family Applications After (1)

Application Number Title Priority Date Filing Date
NL8401703A NL180359C (nl) 1969-07-11 1984-05-28 Inrichting voor het in een detectiegebied opwekken van een electromagnetisch ondervragingsveld.

Country Status (7)

Country Link
JP (1) JPS511400B1 (de)
DE (1) DE2035356C3 (de)
FR (1) FR2055019A5 (de)
GB (1) GB1330481A (de)
HK (1) HK36077A (de)
NL (2) NL177945C (de)
SE (1) SE377387B (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2161773B1 (de) * 1971-11-29 1975-08-29 See International
US4134538A (en) * 1976-03-18 1979-01-16 La Societe Metalimphy Process and apparatus for identification of objects
NL7708012A (nl) * 1977-07-19 1979-01-23 Nedap Nv Detectiestelsel.
GB2247383B (en) * 1987-08-28 1992-07-29 Sensormatic Electronics Corp Antenna for use in an article surveillance system
US5541577A (en) * 1995-05-26 1996-07-30 Consolidated Graphic Materials, Inc. Electromagnetic asset protection system

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR763681A (fr) * 1933-11-10 1934-05-04 Procédé de repérage des objets par modification d'un champ magnétique
US3292080A (en) * 1964-11-23 1966-12-13 Emmanuel M Trikilis System and method for preventing pilferage by detection of magnetic fields
US3500373A (en) 1966-05-06 1970-03-10 Nat Bank Of North America The Method and apparatus for article theft detection

Also Published As

Publication number Publication date
NL8401703A (nl) 1984-09-03
NL7010224A (de) 1971-01-13
HK36077A (en) 1977-07-15
GB1330481A (en) 1973-09-19
NL177945B (nl) 1985-07-16
NL180359C (nl) 1987-02-02
SE377387B (de) 1975-06-30
DE2035356C3 (de) 1984-06-28
DE2035356A1 (de) 1971-02-04
FR2055019A5 (de) 1971-05-07
JPS511400B1 (de) 1976-01-16
DE2035356B2 (de) 1977-06-08

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Legal Events

Date Code Title Description
A85 Still pending on 85-01-01
V4 Lapsed because of reaching the maxim lifetime of a patent