DE1295424B - Vorrichtung zum Entdecken des unberechtigten Vorbeifuehrens von Gegenstaenden an einer Kontrollstelle - Google Patents

Vorrichtung zum Entdecken des unberechtigten Vorbeifuehrens von Gegenstaenden an einer Kontrollstelle

Info

Publication number
DE1295424B
DE1295424B DE1966M0068640 DEM0068640A DE1295424B DE 1295424 B DE1295424 B DE 1295424B DE 1966M0068640 DE1966M0068640 DE 1966M0068640 DE M0068640 A DEM0068640 A DE M0068640A DE 1295424 B DE1295424 B DE 1295424B
Authority
DE
Germany
Prior art keywords
frequency
transistor
circuit
resonance
transmitter
Prior art date
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.)
Pending
Application number
DE1966M0068640
Other languages
German (de)
English (en)
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of DE1295424B publication Critical patent/DE1295424B/de
Pending 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
    • G08B13/2414—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 inductive 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
    • 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
    • G08B13/2414—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 inductive tags
    • G08B13/242—Tag deactivation
    • 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
    • G08B13/2431—Tag circuit 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
    • G08B13/2428—Tag details
    • G08B13/2434—Tag housing and attachment 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
    • G08B13/2428—Tag details
    • G08B13/2437—Tag layered structure, processes for making layered tags
    • G08B13/2445—Tag integrated into item to be protected, e.g. source tagging
    • 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)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Computer Security & Cryptography (AREA)
  • Signal Processing (AREA)
  • Burglar Alarm Systems (AREA)
DE1966M0068640 1965-03-05 1966-03-04 Vorrichtung zum Entdecken des unberechtigten Vorbeifuehrens von Gegenstaenden an einer Kontrollstelle Pending DE1295424B (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US43738365A 1965-03-05 1965-03-05

Publications (1)

Publication Number Publication Date
DE1295424B true DE1295424B (de) 1969-05-14

Family

ID=23736201

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1966M0068640 Pending DE1295424B (de) 1965-03-05 1966-03-04 Vorrichtung zum Entdecken des unberechtigten Vorbeifuehrens von Gegenstaenden an einer Kontrollstelle

Country Status (4)

Country Link
BE (1) BE677359A (xx)
DE (1) DE1295424B (xx)
GB (1) GB1129761A (xx)
SE (1) SE321883B (xx)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4358765A (en) 1978-08-25 1982-11-09 Stiftelsen Institutet For Mikrovagsteknik Vid Tekniska Hogskolan I Stockholm Apparatus for producing a single side band
EP0066403A1 (en) * 1981-05-19 1982-12-08 Automated Security (Holdings) PLC Batteryless, portable, frequency divider
EP0084400A2 (en) * 1982-01-14 1983-07-27 N.V. Nederlandsche Apparatenfabriek NEDAP Detection system

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1292380A (en) * 1969-04-02 1972-10-11 Unisearch Ltd Electronic surveillance systems
FR2547422A1 (fr) * 1983-06-08 1984-12-14 Espace Etiquette destinee a etre associee a un produit ou article pour permettre d'en controler la presence
CA1240056A (en) * 1983-12-06 1988-08-02 Adrian Lewis Tokens and token handling devices
DE69515221T2 (de) * 1994-06-13 2000-09-07 Paxar Corp Sicherungsetikett aus Gewebe
FR2742251B1 (fr) * 1995-12-07 1998-02-20 Mamou Patrick Procede pour proteger une etiquette antivol, etiquette antivol s'y rapportant, et article notamment vestimentaire ou analogue equipe d'une telle etiquette

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE819566C (de) * 1949-11-23 1951-11-05 Paul Raphael Elektromagnetische Sicherungsanlage zur Anzeige mitgefuehrter verborgener elektrischer Leiter
DE969289C (de) * 1951-06-27 1958-05-14 Interessengemeinschaft Fuer Ru Anordnung zur UEbertragung von Signalen

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE819566C (de) * 1949-11-23 1951-11-05 Paul Raphael Elektromagnetische Sicherungsanlage zur Anzeige mitgefuehrter verborgener elektrischer Leiter
DE969289C (de) * 1951-06-27 1958-05-14 Interessengemeinschaft Fuer Ru Anordnung zur UEbertragung von Signalen

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4358765A (en) 1978-08-25 1982-11-09 Stiftelsen Institutet For Mikrovagsteknik Vid Tekniska Hogskolan I Stockholm Apparatus for producing a single side band
EP0066403A1 (en) * 1981-05-19 1982-12-08 Automated Security (Holdings) PLC Batteryless, portable, frequency divider
EP0084400A2 (en) * 1982-01-14 1983-07-27 N.V. Nederlandsche Apparatenfabriek NEDAP Detection system
EP0084400B1 (en) * 1982-01-14 1987-08-26 N.V. Nederlandsche Apparatenfabriek NEDAP Detection system

Also Published As

Publication number Publication date
BE677359A (xx) 1966-09-05
SE321883B (xx) 1970-03-16
GB1129761A (en) 1968-10-09

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