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 (enrdf_load_stackoverflow
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)
  • Electromagnetism (AREA)
  • Computer Security & Cryptography (AREA)
  • Automation & Control Theory (AREA)
  • Signal Processing (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Biochemistry (AREA)
  • Analytical Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Electrochemistry (AREA)
  • Chemical Kinetics & Catalysis (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 (enrdf_load_stackoverflow) 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 (enrdf_load_stackoverflow)
DE (1) DE2035356C3 (enrdf_load_stackoverflow)
FR (1) FR2055019A5 (enrdf_load_stackoverflow)
GB (1) GB1330481A (enrdf_load_stackoverflow)
HK (1) HK36077A (enrdf_load_stackoverflow)
NL (2) NL177945C (enrdf_load_stackoverflow)
SE (1) SE377387B (enrdf_load_stackoverflow)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2161773B1 (enrdf_load_stackoverflow) * 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.
GB2247382B (en) * 1987-08-28 1992-08-12 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
NL180359C (nl) 1987-02-02
GB1330481A (en) 1973-09-19
SE377387B (enrdf_load_stackoverflow) 1975-06-30
HK36077A (en) 1977-07-15
DE2035356B2 (de) 1977-06-08
NL8401703A (nl) 1984-09-03
NL7010224A (enrdf_load_stackoverflow) 1971-01-13
JPS511400B1 (enrdf_load_stackoverflow) 1976-01-16
DE2035356C3 (de) 1984-06-28
DE2035356A1 (de) 1971-02-04
NL177945B (nl) 1985-07-16
FR2055019A5 (enrdf_load_stackoverflow) 1971-05-07

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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