EP0878785B1 - Elément universel de sécurité et sa méthode de fabrication - Google Patents

Elément universel de sécurité et sa méthode de fabrication Download PDF

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Publication number
EP0878785B1
EP0878785B1 EP98106917A EP98106917A EP0878785B1 EP 0878785 B1 EP0878785 B1 EP 0878785B1 EP 98106917 A EP98106917 A EP 98106917A EP 98106917 A EP98106917 A EP 98106917A EP 0878785 B1 EP0878785 B1 EP 0878785B1
Authority
EP
European Patent Office
Prior art keywords
oscillating circuit
resonant oscillating
conductor track
resonant
conductor tracks
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.)
Expired - Lifetime
Application number
EP98106917A
Other languages
German (de)
English (en)
Other versions
EP0878785A2 (fr
EP0878785A3 (fr
Inventor
Richard Altwasser
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.)
Meto International GmbH
Original Assignee
Meto International GmbH
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 Meto International GmbH filed Critical Meto International GmbH
Publication of EP0878785A2 publication Critical patent/EP0878785A2/fr
Publication of EP0878785A3 publication Critical patent/EP0878785A3/fr
Application granted granted Critical
Publication of EP0878785B1 publication Critical patent/EP0878785B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • G08B13/2417—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 having a radio frequency identification chip
    • 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

Definitions

  • the invention relates to a universal securing element after the top handle of claim 1 as well as a Method of manufacturing the universal securing element according to the preamble of claim 2.
  • Resonant circuits with resonance frequencies (RF) in the mega hertz range are increasingly becoming electronic Article security used.
  • the main area of application is Retail trade. They are usually in the form of Tags and labels provided and machine or manually connected to the items to be backed up.
  • so-called source integration is becoming increasingly common to use, i.e., the securing element is already during the manufacturing or packaging process in the Article or integrated into its packaging.
  • An RF security element is already known from EP-0 665 705 A2 known that consists of two conductive, spiral turns (spirals). The two Spirals are separated by a dielectric layer separated and arranged so that they are at least partially overlap.
  • Such resonance frequency fuse elements are high Dimensions flexible. Since it is also very thin and flat they can easily be used in printers with a desired imprint. This imprint serves either the customer information, or it is machine-readable information, preferably one Barcode. Barcodes form an inexpensive solution when it comes to that is going to provide machine-readable information.
  • the disadvantage is that a barcode is always in immediate Proximity of the barcode reader based on optical principles must be brought to be identified. Furthermore, the barcode reader can only use the information decrypt if the barcode is freely accessible, so not is covered. The use of a source integrated Security element with barcode is therefore - if at all make sense in exceptional cases.
  • WO-A-9428523 which shows the prior art from which claim 1 is based in the preamble, describes a method for producing a securing element, where information by setting the resonance frequency of resonance circuits be encoded.
  • the setting of the resonance circuits is done by a selective Remove the metallization that forms the resonant circuit.
  • the removal of Metafrization is done by punching holes with a given diameter from capacitive elements of the resonance circuit to be coded, which increases the capacitance and thus also the resonance frequency of the resonance circuit is changed.
  • the invention is based, an inexpensive task universal securing element and a method to propose for its manufacture.
  • the task is carried out by a universal securing element with the features specified in claim 1 or, by a method for its production with the in claim 2 given steps resolved.
  • the procedure provides that the resonance frequency of the at least one further electromagnetic Resonant circuit outside of Resonance frequency of the resonant circuit for the electronic article surveillance is placed.
  • the resonance frequency of the resonant circuit for the electronic Article surveillance is standardized and lies for one Variety of surveillance systems at 8.2 MHz.
  • Procedure is proposed that the further resonant circuit or the further resonant circuits, which serve to identify the articles in the Interior of the resonant circuit for electronic Article security are formed, with the interior through inner tracks of the resonant circuit for the electronic article surveillance is limited.
  • This Arrangement is very space saving and makes it possible to do that Previously usual dimensions of the fuse elements for the maintain electronic article surveillance.
  • universal securing element In order to increase the storage capacity of the invention universal securing element is proposed that a Element that has essentially the same dimensions as the universal security element, with information-bearing Resonance resonant circuits is equipped. This additional element comes with the universal element connected, e.g. it is glued to the back.
  • the procedure is that essentially identical resonant circuits for the identification of Articles are used, the resonant circuits subsequently encoded with the specific information become.
  • Possible configurations of the alternative steps of the method according to the invention for the subsequent coding of the Resonant circuits are based on a change in characteristic properties of the resonant circuits. These characteristic properties are: the resonance frequency RF or the capacitance C and the inductance L, which directly determine the resonance frequency Resonance amplitude A (RF) and / or the quality Q of the Resonant circuit.
  • RF resonance frequency
  • One or more of these sizes Resonant circuits for the identification of articles are determined by physical action in a defined manner and way changed.
  • One way of coding the resonant circuits provides that selected resonant circuits be short-circuited.
  • the short circuit occurs between opposite conductor tracks through the dielectric carrier layer therethrough.
  • the procedures used to generate the Short circuit can be used are identical to the procedures already related to the Deactivation of resonant circuits to secure Articles have become known.
  • a common method consists of connecting the resonant circuit to one selected spot with an acicular, possibly to pierce the heated pen. It is also possible opposite conductor tracks by pressure and / or Bring heat into contact with each other.
  • On Short circuit can also be achieved by Apply a correspondingly strong electrical field Arc discharge between two opposite conductive ones Areas of the resonant circuit is achieved.
  • the electrical field used to create the short circuit is either provided via contact electrodes, or it is generated without contact by the selected one Resonance circuit with a sufficiently strong energy impulse applied in the range of its resonance frequency becomes.
  • conductive diffuses Metal of the conductor tracks in the dielectric carrier layer, so that a permanently conductive connection between the conductor tracks is created.
  • the Resonant circuits to identify the articles can be encoded by the length of the conductor tracks of the Resonance resonant circuits is reduced or enlarged.
  • a simple method of reducing the length of the Conductor tracks provide that of the one to be encoded Resonant circuit part (open circuit) with a cutting device is separated.
  • the Conductor of the resonant circuit to be coded one Melt connection introduced. This melts as a result of Temperature rise as soon as the current that flows through it exceeds a predetermined value. Again, the Current in the resonant circuit through electrode contact or contactless in the manner described above respectively.
  • An alternative method for coding the resonant circuits provides that the resonant circuits to Identification of the items to be encoded by being selective open resonant circuits (at least one turn) to the Resonant circuits are added. This will make the Changed resonant frequency of the resonant circuits.
  • the turn can be in series or be added in parallel.
  • at least an additional turn to a resonant circuit add a variety of different Create resonance frequencies.
  • Another way to change the physical Properties consists in a change in the capacity of the Resonant circuits. This will result in an increase in capacity achieved that the area in which the by the dielectric carrier layer separate conductor tracks of the resonant circuit overlap, is increased.
  • the resonance frequency is thereby moved changed that two separate, at least partially overlapping coils shorted to one become.
  • the point at which the short circuit occurs is determined subsequently the resulting resonance frequency of the coded resonant circuit.
  • the amplitude of the resonant circuit is changed in a defined manner for the purpose of coding.
  • This is advantageously done, for example, by connecting the resonant circuit to be coded to a conductor track of the resonant circuit for article security. The latter then takes on the function of an antenna for the resonant circuit to be coded.
  • the resonant circuit to be coded is connected to a turn which acts only as an antenna and the length of which can also be selected so that the amplitude of the resonant frequency is changed in the desired manner.
  • a deliberate change in the physical property 'goodness Q of the resonant circuit can, for example, by means of following method can be achieved: short circuits generated between two opposite conductor tracks. There these shorts typically have a higher resistance than the conductive traces have, the quality of the resonant circuit to be coded reduced. So the decisive factor for the change in quality is Change in the resistance of the resonant circuit. This Change can also be achieved as follows: Since the Resistance is inversely proportional to the width of the trace , it is sufficient to take appropriate measures to reduce the width to change.
  • Fig. 1 shows a plan view of an embodiment of the universal securing element according to the invention 1. It consists of a resonant circuit 2, which in Query field of an electronic article surveillance for Emission of a characteristic signal is excited and subsequently triggers an alarm.
  • the resonant circuit 2 is arranged in the outer region of a dielectric carrier layer 14 and encloses two further resonant circuits 3, the identification of appropriately secured articles serve.
  • FIG. 2 is a plan view of an arrangement of Resonant circuits 3 for the identification of articles to see. This arrangement is an addition to one universal element 1 according to the invention is intended and used to increase the storage capacity many times over.
  • Fig. 3 shows the typical frequency spectrum of a resonant circuit 2; 3. It is characterized in that the Amplitude A (F) and thus the intensity of the signal pronounced maximum (peak) in the area around the resonance frequency (RF) owns.
  • the quality of a resonant circuit 2; 3 is defined as the quotient of the resonance frequency RF and 3 dB bandwidth.
  • FIGS. 4a to 4c show different possibilities, permanently short-circuited like a resonant circuit 3 (Fig. 4a to Fig. 4c) or how the circuit is interrupted can be.
  • the short circuit - shown in FIGS. 4a to 4c - takes place through the dielectric carrier layer 14.
  • the resonant circuit 3 in at least one area of opposite conductor tracks 4, 5 pierced by means of a needle-shaped pin 6.
  • a Alternative provides (Fig. 4b) that the upper conductor track 4th by means of a specially shaped pressing tool 7 against the lower trace 5 is pressed. To be a complete one Removal of the dielectric carrier layer 14 is achieved the pressing tool 7 is additionally heated.
  • a short circuit can occur also - as indicated in Fig. 4c - by means of a electrical arc discharge through the dielectric carrier layer 14 done through.
  • A is required for this correspondingly strong energy impulse in the area of Resonance frequency of the resonant circuit.
  • This Energy pulse can either be by means of contact electrodes be provided, or it is provided by a transmitter in the form of electromagnetic radiation radiated. Diffuse as a result of the arc discharge Particle of the conductive material - usually will aluminum used for this purpose in the dielectric carrier layer 14 and carbonate them.
  • Another way to deactivate and thus Change the information content of a resonant circuit consists of the conductor tracks 4; 5 to interrupt. This is done according to one embodiment mechanically - see Fig. 4d - by means of a cutting device 10.
  • the Trace 4; 5 a fusible link (fuse) 11 built in as a result of a sufficiently high current flow the heating melts and evaporates - see Fig. 4e.
  • FIG. 5a shows a schematic representation of a special configuration of the securing element 1 according to the invention, in which a conductor 15 is added serially.
  • Fig. 5b the conductor track 15 is attached in parallel
  • Fig. 5c the Case describes that a conductor 15, which here in opposite direction to conductor track 4; 5 wrapped is added serially.
  • a change in the resonant frequency of a resonant circuit 3 can also be achieved in that the Capacity K of the resonant circuit is increased or decreased.
  • the capacitance K increased by adding a conductor track section 16 is, the conductor track section 16 is placed so that he an area of the lower conductor track 4 or the upper Conductor 5 of the resonant circuit 3 is opposite.
  • Trace section 16 and trace 4; 5 are about one Junction 12 connected to each other.
  • Fig. 7 shows a schematic representation of a Resonant circuit 3, in which the resonance frequency is changed in that two overlapping conductor tracks 4; 5 by short circuit at one of the connection points 12 in a additional coil 17 can be transformed.
  • the resulting resonance frequency depends on the location of the connection point 12.
  • a solution is shown schematically, via the specifically influences the amplitude A (RF) of the resonance frequency can be.
  • RF amplitude A
  • In addition to the conductor tracks 4; 5 of Resonant circuit 3 is an additional turn 17th provided that once they are at the junction 12 with the Conductor tracks 4; 5 is connected as an antenna for the resonant circuit 3 acts.
  • the amplitude signal changed in a defined manner.

Landscapes

  • 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)
  • Radar Systems Or Details Thereof (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Metal Rolling (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
  • Ropes Or Cables (AREA)

Claims (9)

  1. Elément universel de protection pour protéger des articles contre le vol, comprenant au moins un circuit oscillant électromagnétique (2) disposé sur une couche porteuse (14) diélectrique et excité dans le champ de balayage d'un dispositif de monitorage d'articles pour émettre un signal caractéristique, ce dernier déclenchant une alarme par la suite, au moins un circuit oscillant électromagnétique (3) supplémentaire étant prévu sur la couche porteuse (14) diélectrique, comportant des informations spécifiques codées portant sur l'article en question,
       caractérisé en ce que la structure du circuit oscillant supplémentaire (3) est prévue telle que celui-ci comprend, de part et d'autre de la couche porteuse diélectrique (14), deux tracés (4; 5) agencés au moins en partie de façon chevauchante.
  2. Procédé de fabrication d'un élément universel de protection selon la revendication 1, caractérisé en ce que l'information est codée grâce à l'une des étapes suivantes:
    a) le circuit oscillant supplémentaire (3) est percé dans au moins une partie des tracés (4; 5) disposés en vis-à-vis, à l'aide d'une goupille (6) en forme d'une aiguille afin de court-circuiter le circuit oscillant supplémentaire (3); ou
    b) la continuité électrique est coupée par un des deux tracés (4; 5) du circuit oscillant supplémentaire (3); ou
    c) les tracés (4; 5) du circuit oscillant supplémentaire (3) sont rallongés; ou
    d) un circuit oscillant ouvert (15) est rajouté au circuit oscillant supplémentaire (3); ou
    e) une portion de tracé (16) supplémentaire est reliée à l'un des tracés (4; 5) courbes en étant agencée de telle façon qu'elle se trouve en vis-à-vis d'une portion de tracé de l'autre tracé courbe; ou
    f) le circuit oscillant supplémentaire (3) est relié à une bobine supplémentaire (17) servant d'antenne au circuit oscillant supplémentaire (3).
  3. Procédé selon la revendication 2, caractérisé en ce que dans l'étape a), le circuit oscillant supplémentaire (3) est court-circuité dans une zone dans laquelle les deux tracés (4; 5) se font vis-à-vis, grâce à un outil de compression (7), de telle manière que le tracé (4) supérieure de la couche porteuse diélectrique (14) soit poussé contre le tracé (5) inférieure de la couche porteuse diélectrique (14).
  4. Procédé selon la revendication 2, caractérisé en ce que dans l'étape a), le circuit oscillant supplémentaire (3) est court-circuité dans une zone dans laquelle les deux tracés (4; 5) se font vis-à-vis, grâce à une décharge en arc à travers la couche porteuse diélectrique (14).
  5. Procédé selon la revendication 4, caractérisé en ce que la décharge en arc est obtenue moyennant une forte impulsion énergétique dans la plage d'une fréquence de résonance du circuit oscillant supplémentaire (3).
  6. Procédé selon la revendication 2, caractérisé en ce que dans l'étape b), le tracé (9) est coupé à l'aide d'un dispositif de coupe (10).
  7. Procédé selon la revendication 2, caractérisé en ce que dans l'étape b), un fusible est inséré dans le tracé (4; 5) qui fond et s'évapore lors d'un courant suffisamment élevé à travers le tracé pour couper le tracé.
  8. Procédé selon l'une des revendications 2 à 7, caractérisé en ce qu'une fréquence de résonance (RF) dudit circuit oscillant supplémentaire (3) est prévue pour la protection électronique des artices, en dehors d'une fréquence de résonance (RF) dudit circuit oscillant (2).
  9. Procédé selon l'une des revendications 2 à 8, caractérisé en ce que ledit circuit oscillant supplémentaire (3) ou lesdits circuits oscillants supplémentaires (3) servant à l'identification des articles sont prévus dans la zone intérieure du circuit oscillant (2) pour la protection électronique des articles, la zone intérieure étant limitée par des tracés intérieurs dudit circuit oscillant (2) pour la protection électronique des articles.
EP98106917A 1997-05-12 1998-04-16 Elément universel de sécurité et sa méthode de fabrication Expired - Lifetime EP0878785B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19719434 1997-05-12
DE19719434A DE19719434A1 (de) 1997-05-12 1997-05-12 Universelles Sicherungselement und Verfahren zu seiner Herstellung

Publications (3)

Publication Number Publication Date
EP0878785A2 EP0878785A2 (fr) 1998-11-18
EP0878785A3 EP0878785A3 (fr) 2000-01-12
EP0878785B1 true EP0878785B1 (fr) 2003-12-17

Family

ID=7828987

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98106917A Expired - Lifetime EP0878785B1 (fr) 1997-05-12 1998-04-16 Elément universel de sécurité et sa méthode de fabrication

Country Status (6)

Country Link
US (1) US6104278A (fr)
EP (1) EP0878785B1 (fr)
JP (1) JPH10334356A (fr)
AT (1) ATE256905T1 (fr)
DE (2) DE19719434A1 (fr)
ES (1) ES2212165T3 (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19951561A1 (de) * 1999-10-27 2001-05-03 Meto International Gmbh Sicherungselement für die elektronischen Artikelsicherung
FR2812482B1 (fr) * 2000-07-28 2003-01-24 Inside Technologies Dispositif electronique portable comprenant plusieurs circuits integres sans contact
US7501954B1 (en) * 2000-10-11 2009-03-10 Avante International Technology, Inc. Dual circuit RF identification tags
FR2815176B1 (fr) * 2000-10-11 2003-01-10 A S K Antenne spirale d'emission et/ou reception a coupures
US6866752B2 (en) 2001-08-23 2005-03-15 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Method of forming ultra thin film devices by vacuum arc vapor deposition
US7164358B2 (en) * 2004-02-17 2007-01-16 Sensormatic Electronics Corporation Frequency divider with variable capacitance
US7355516B2 (en) * 2004-12-23 2008-04-08 Checkpoint Systems, Inc. Method and apparatus for protecting culinary products
FR2886467B1 (fr) * 2005-05-25 2010-10-22 Oberthur Card Syst Sa Entite electronique a antenne magnetique
WO2007130147A2 (fr) * 2005-11-04 2007-11-15 Gerald Giasson Système de capteur de sécurité
US8026818B2 (en) * 2006-12-20 2011-09-27 Checkpoint Systems, Inc. EAS and UHF combination tag
WO2010066955A1 (fr) 2008-12-11 2010-06-17 Yves Eray Circuit d'antenne rfid

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1577920A (en) * 1976-11-01 1980-10-29 Nedap Nv Detection plate for identification systems
US4605845A (en) * 1982-12-14 1986-08-12 Shigekazu Takeda Detectable card and entry and departure checking apparatus utilizing the same
JPH0780386B2 (ja) * 1989-01-25 1995-08-30 東海金属株式会社 共振タグおよびその製造方法
GB2246492B (en) * 1990-07-26 1994-10-12 Chikara Shimamura Automatic identification system for articles
US5381137A (en) * 1992-10-26 1995-01-10 Motorola, Inc. RF tagging system and RF tags and method
US5604485A (en) * 1993-04-21 1997-02-18 Motorola Inc. RF identification tag configurations and assemblies
US5604486A (en) * 1993-05-27 1997-02-18 Motorola, Inc. RF tagging system with multiple decoding modalities
US5510769A (en) * 1993-08-18 1996-04-23 Checkpoint Systems, Inc. Multiple frequency tag
US5446447A (en) * 1994-02-16 1995-08-29 Motorola, Inc. RF tagging system including RF tags with variable frequency resonant circuits

Also Published As

Publication number Publication date
EP0878785A2 (fr) 1998-11-18
DE59810437D1 (de) 2004-01-29
DE19719434A1 (de) 1998-11-19
EP0878785A3 (fr) 2000-01-12
US6104278A (en) 2000-08-15
ES2212165T3 (es) 2004-07-16
JPH10334356A (ja) 1998-12-18
ATE256905T1 (de) 2004-01-15

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