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FR2161773B1 - - Google Patents

Info

Publication number
FR2161773B1
FR2161773B1 FR7142634A FR7142634A FR2161773B1 FR 2161773 B1 FR2161773 B1 FR 2161773B1 FR 7142634 A FR7142634 A FR 7142634A FR 7142634 A FR7142634 A FR 7142634A FR 2161773 B1 FR2161773 B1 FR 2161773B1
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.)
Expired
Application number
FR7142634A
Other languages
French (fr)
Other versions
FR2161773A1 (sv
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.)
SEE INTERNATIONAL
Original Assignee
SEE INTERNATIONAL
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 SEE INTERNATIONAL filed Critical SEE INTERNATIONAL
Priority to FR7142634A priority Critical patent/FR2161773B1/fr
Publication of FR2161773A1 publication Critical patent/FR2161773A1/fr
Application granted granted Critical
Publication of FR2161773B1 publication Critical patent/FR2161773B1/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
    • G08B13/2405—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
    • 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
    • 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

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • Automation & Control Theory (AREA)
  • Computer Security & Cryptography (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
FR7142634A 1971-11-29 1971-11-29 Expired FR2161773B1 (sv)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7142634A FR2161773B1 (sv) 1971-11-29 1971-11-29

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7142634A FR2161773B1 (sv) 1971-11-29 1971-11-29

Publications (2)

Publication Number Publication Date
FR2161773A1 FR2161773A1 (sv) 1973-07-13
FR2161773B1 true FR2161773B1 (sv) 1975-08-29

Family

ID=9086549

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7142634A Expired FR2161773B1 (sv) 1971-11-29 1971-11-29

Country Status (1)

Country Link
FR (1) FR2161773B1 (sv)

Family Cites Families (4)

* 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
FR1511099A (fr) * 1966-12-15 1968-01-26 Tech Et D Entpr S Generales So Perfectionnements aux dispositifs de détection et d'identification à distance
NO126975B (sv) * 1967-03-30 1973-04-16 John Welsh
JPS511400B1 (sv) * 1969-07-11 1976-01-16

Also Published As

Publication number Publication date
FR2161773A1 (sv) 1973-07-13

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Legal Events

Date Code Title Description
ST Notification of lapse