EP0670562A1 - Système de détection avec étiquette résonante et méthode de réponse à fréquence multiple - Google Patents

Système de détection avec étiquette résonante et méthode de réponse à fréquence multiple Download PDF

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Publication number
EP0670562A1
EP0670562A1 EP95850044A EP95850044A EP0670562A1 EP 0670562 A1 EP0670562 A1 EP 0670562A1 EP 95850044 A EP95850044 A EP 95850044A EP 95850044 A EP95850044 A EP 95850044A EP 0670562 A1 EP0670562 A1 EP 0670562A1
Authority
EP
European Patent Office
Prior art keywords
circuit elements
frequency
circuit
responsive
labels
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.)
Withdrawn
Application number
EP95850044A
Other languages
German (de)
English (en)
Inventor
John R. Pennace
Frank A. Mcconville
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.)
Flexcon Co Inc
Original Assignee
Flexcon Co Inc
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 Flexcon Co Inc filed Critical Flexcon Co Inc
Publication of EP0670562A1 publication Critical patent/EP0670562A1/fr
Withdrawn legal-status Critical Current

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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
    • 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
    • G08B13/2437—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
    • G08B13/2445—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
    • G08B13/2428—Tag details
    • G08B13/2448—Tag with at least dual detection means, e.g. combined inductive and ferromagnetic tags, dual frequencies within a single technology, tampering detection or signalling means on the tag
    • 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
    • G08B13/2482—EAS methods, e.g. description of flow chart of the detection procedure

Definitions

  • the invention relates to resonant tag labels which are used in electronic article surveillance and identification systems.
  • a security system and method for detecting unauthorized removal of items at an exit from a control area includes labels applied to the items, the labels including a plurality of circuit elements, each circuit element being responsive to a different frequency.
  • the labels are modifiable from an initial condition in which all of the circuit elements are actively responsive to their respective frequencies, to a live condition in which at least one but not all of the circuit elements is deactivated and rendered non-responsive to its respective frequency.
  • the labels are also modifiable from the live condition to a dormant condition in which at least one additional circuit element is deactivated and rendered non-responsive to its respective frequency. Different frequencies are generated at the exit to which said plurality of circuit elements are responsive so as to induce frequency responses by the circuit elements which remain activated.
  • a control unit is responsive to the frequency responses generated by labels in the live condition for generating a control signal.
  • a resonant tag label 10 is shown.
  • the label 10 is constructed in a planar manner, for example in a row as illustrated, to include adjacently disposed label segments 12, 16 having respective tuned antenna circuits 14, 18.
  • Each of the antenna circuits is configured in accordance with conventional label construction techniques, for example as described in any of the disclosures mentioned heretofore, or preferably as described with reference to copending U.S. Pat. App. Ser. No. Unknown, entitled Resonant Tag Label and Method of Making Same, filed ?.
  • the resonant tag label 10 is therefore configured to be responsive to a plurality of frequencies.
  • the invention herein will be described with respect to a resonant tag label which is responsive to two distinct frequencies. Accordingly, antenna circuit 14 is responsive to frequency F1 and antenna circuit 18 is responsive to frequency F2.
  • a resonant tag label detection system 20 in accordance with the present invention is described. Initially, the system is dependent upon the application of the resonant tag label 10 to items 22 which are to be monitored.
  • the antenna circuits 14, 18 associated with the label 10 are selectively deactivated by a deactivation devices 24 and 25, one associated for each frequecy of the antenna circuits.
  • the deactivation devices for example, are high power radio frequency transmitters which when operated proximate to an antenna circuit, the antenna circuit is rendered inoperable.
  • the deactivation devices operate to mechanically engage the label 10 so as to physically damage the antenna circuits, thus rendering the antenna circuit inoperable.
  • a radio frequency transmitter unit 26 is disposed preferably near an exit of the area which is being monitored.
  • the transmitter unit is operable for creating a multiple frequency field adjacent the exit area.
  • the transmitter unit 26 generates two distinct frequencies, F1 and F2, to correspond to the antenna circuits associated with the label 10 which are responsive to these frequencies.
  • a radio frequency receiver unit 27 is correspondingly disposed adjacent the monitored area.
  • the receiver unit is preferably operable for monitoring for the specific frequency responses associated with the antenna circuits of the resonant tag label 10.
  • the transmitter unit 26 and receiver unit 27 may alternatively include a single frequency transceiving unit.
  • a control signal is generated corresponding to the label status.
  • the control signal is provided to an alarm unit 28 for providing an indication of an alarm condition.
  • the system 20 is operational for providing an alarm signal in response to the receiver unit 27 receiving only one frequency response from the resonant tag label 10. Accordingly, this will accommodate the application of resonant tag labels 10 to all items at the packaging source (step 300).
  • the resonant tag label includes antenna circuits which are responsive to the two distinct frequencies, F1 and F2.
  • the item 22 with the applied resonant tag label 10 is furnished to a controlled retail distributor. Once this item is inventoried at the controlled retailer, one of the antenna circuits of the resonant tag label 10 is deactivated to create a live status (step 302). When the item is purchased or rendered otherwise suitable for an authorized removal from the monitored area, the second of the antenna circuits is deactivated in order to create a disabled status (step 304). Thus, when the item 22 and resonant tag label 10 are subjected to the multiple frequency field at the exit of the monitored area, no frequency responses are induced by the antenna circuits. Accordingly, an alarm condition is not indicated (step 308).
  • the resonant tag label 10 remains in a live status when encountering the multiple frequency field at the exit. In this situation, a frequency response is induced by the remaining active antenna circuit (step 310), and a subsequent indication of an alarm condition is provided (step 312).
  • the resonant tag label 10 In the case where the item 22 with the resonant tag label 10 is provided to an uncontrolled retail distributor, it follows that there would be no deactivation of the antenna circuits, thus leaving the resonant tag label in a disabled status (step 314). It follows that upon removal of the item from the uncontrolled retailer, the resonant tag label 10 remains in a disabled status due to neither antenna circuit being deactivated (step 316). However, upon the item being innocently brought within a monitored area at a controlled retailer, the resonant tag label as such precludes triggering of a false alarm condition due to the disabled status of the resonant tag label (steps 318, 320). Accordingly, the system as described accommodates the application of resonant tag labels to items at the packaging source which are rendered into a live status only by deactivation of one of the antenna circuits.
  • the system may be rendered operable for resonant tag labels which include more than two antenna circuits, and which provide indications of an alarm condition in response to receiving predetermined combinations of frequency responses from the active antenna circuits associated with the resonant tag label.
  • FIG. 4 An alternative embodiment of the resonant tag label 10 used in the system 20 is illustrated in Fig. 4, wherein a first antenna pattern 46 which is applied to the surface 44 of a carrier film 42. It will be appreciated that the base layer may include a dielectric coating by itself or in conjunction with the carrier film.
  • first dielectric coating 48 with through-hole 49 and a conductive plate 50 are applied to the first antenna pattern 46 to form a first tuned antenna circuit 52 with a first predetermined frequency.
  • second dielectric coating 54 with through-hole 55 and a second antenna pattern 56 are applied onto the conductive plate 50 to form a second tuned antenna circuit 58 with a second predetermined frequency.
  • the resonant tag label 40 is operational with respect to two different frequencies.
  • additional alternate layers of conductive plates and antenna patterns with a dielectric coating therebetween may be applied to the label structure, thus rendering the resonant tag label operational with respect to a plurality of frequencies.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Computer Security & Cryptography (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Burglar Alarm Systems (AREA)
  • Geophysics And Detection Of Objects (AREA)
EP95850044A 1994-03-01 1995-02-28 Système de détection avec étiquette résonante et méthode de réponse à fréquence multiple Withdrawn EP0670562A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US204066 1988-06-08
US20406694A 1994-03-01 1994-03-01

Publications (1)

Publication Number Publication Date
EP0670562A1 true EP0670562A1 (fr) 1995-09-06

Family

ID=22756483

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95850044A Withdrawn EP0670562A1 (fr) 1994-03-01 1995-02-28 Système de détection avec étiquette résonante et méthode de réponse à fréquence multiple

Country Status (3)

Country Link
EP (1) EP0670562A1 (fr)
JP (1) JPH0883384A (fr)
CN (1) CN1129333A (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996010241A1 (fr) * 1994-09-26 1996-04-04 Tuotesuoja Sirpa Järvensivu Ky Procede et appareil d'identification
WO2003046825A1 (fr) * 2001-11-29 2003-06-05 Koninklijke Philips Electronics N.V. Porteuse de donnees sans fil pour la transmission d'information d'etat stockee differente avec differents parametres de transmission
EP1510985A2 (fr) * 2003-08-23 2005-03-02 Sensormatic Electronics Corporation Méthode et dispositif pour détecter plusieurs étiquettes de sécurité
WO2008055212A2 (fr) * 2006-10-31 2008-05-08 Gt Acquisition Sub, Inc. Gestion d'énergie dans des dispositifs à radiofréquences
US7843350B2 (en) 2007-01-21 2010-11-30 Destron Fearing Corporation Animal management system including radio animal tag and additional tranceiver(s)
US7965188B2 (en) 2004-11-17 2011-06-21 Destron Fearing Corporation Radio frequency animal tracking system
US7978079B2 (en) 2007-10-12 2011-07-12 Destron Fearing Corporation Electronic tag

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009520250A (ja) * 2005-12-07 2009-05-21 エヌエックスピー ビー ヴィ トランスポンダ用回路装置およびこの回路装置の動作方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3967161A (en) * 1972-06-14 1976-06-29 Lichtblau G J A multi-frequency resonant tag circuit for use with an electronic security system having improved noise discrimination
DE3344782A1 (de) * 1982-12-14 1984-06-14 Shigekazu Tokyo Takeda Kartenfoermiger detektor und eintritt- und austritt-kontrollanlage mit einem derartigen detektor
EP0463233A2 (fr) * 1990-06-27 1992-01-02 Checkpoint Systems, Inc. Etiquette de sécurité activable/déactivable pour l'emploi dans un système électronique de sécurité
US5081445A (en) * 1991-03-22 1992-01-14 Checkpoint Systems, Inc. Method for tagging articles used in conjunction with an electronic article surveillance system, and tags or labels useful in connection therewith

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3967161A (en) * 1972-06-14 1976-06-29 Lichtblau G J A multi-frequency resonant tag circuit for use with an electronic security system having improved noise discrimination
DE3344782A1 (de) * 1982-12-14 1984-06-14 Shigekazu Tokyo Takeda Kartenfoermiger detektor und eintritt- und austritt-kontrollanlage mit einem derartigen detektor
EP0463233A2 (fr) * 1990-06-27 1992-01-02 Checkpoint Systems, Inc. Etiquette de sécurité activable/déactivable pour l'emploi dans un système électronique de sécurité
US5081445A (en) * 1991-03-22 1992-01-14 Checkpoint Systems, Inc. Method for tagging articles used in conjunction with an electronic article surveillance system, and tags or labels useful in connection therewith

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996010241A1 (fr) * 1994-09-26 1996-04-04 Tuotesuoja Sirpa Järvensivu Ky Procede et appareil d'identification
WO2003046825A1 (fr) * 2001-11-29 2003-06-05 Koninklijke Philips Electronics N.V. Porteuse de donnees sans fil pour la transmission d'information d'etat stockee differente avec differents parametres de transmission
CN1313967C (zh) * 2001-11-29 2007-05-02 皇家飞利浦电子股份有限公司 用于发送具有不同传输参数的不同存储的状态信息的无线数据载体
EP1510985A2 (fr) * 2003-08-23 2005-03-02 Sensormatic Electronics Corporation Méthode et dispositif pour détecter plusieurs étiquettes de sécurité
EP1510985A3 (fr) * 2003-08-23 2006-08-30 Sensormatic Electronics Corporation Méthode et dispositif pour détecter plusieurs étiquettes de sécurité
US7965188B2 (en) 2004-11-17 2011-06-21 Destron Fearing Corporation Radio frequency animal tracking system
WO2008055212A2 (fr) * 2006-10-31 2008-05-08 Gt Acquisition Sub, Inc. Gestion d'énergie dans des dispositifs à radiofréquences
WO2008055212A3 (fr) * 2006-10-31 2008-07-24 Gt Acquisition Sub Inc Gestion d'énergie dans des dispositifs à radiofréquences
US7843350B2 (en) 2007-01-21 2010-11-30 Destron Fearing Corporation Animal management system including radio animal tag and additional tranceiver(s)
US8149125B2 (en) 2007-01-21 2012-04-03 Destron Fearing Corporation Animal management system including radio animal tags and additional transceiver(s)
US7978079B2 (en) 2007-10-12 2011-07-12 Destron Fearing Corporation Electronic tag

Also Published As

Publication number Publication date
JPH0883384A (ja) 1996-03-26
CN1129333A (zh) 1996-08-21

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