WO2004104958A1 - Eas/rfid identification hard tags - Google Patents
Eas/rfid identification hard tags Download PDFInfo
- Publication number
- WO2004104958A1 WO2004104958A1 PCT/US2004/015829 US2004015829W WO2004104958A1 WO 2004104958 A1 WO2004104958 A1 WO 2004104958A1 US 2004015829 W US2004015829 W US 2004015829W WO 2004104958 A1 WO2004104958 A1 WO 2004104958A1
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- WO
- WIPO (PCT)
- Prior art keywords
- frequency
- identification tag
- eas
- elements
- mhz
- Prior art date
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Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
- G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
- G06K19/077—Constructional details, e.g. mounting of circuits in the carrier
- G06K19/07749—Constructional details, e.g. mounting of circuits in the carrier the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card
- G06K19/07766—Constructional details, e.g. mounting of circuits in the carrier the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card comprising at least a second communication arrangement in addition to a first non-contact communication arrangement
- G06K19/07767—Constructional details, e.g. mounting of circuits in the carrier the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card comprising at least a second communication arrangement in addition to a first non-contact communication arrangement the first and second communication means being two different antennas types, e.g. dipole and coil type, or two antennas of the same kind but operating at different frequencies
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
- G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
- G06K19/077—Constructional details, e.g. mounting of circuits in the carrier
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B73/00—Devices for locking portable objects against unauthorised removal; Miscellaneous locking devices
- E05B73/0017—Anti-theft devices, e.g. tags or monitors, fixed to articles, e.g. clothes, and to be removed at the check-out of shops
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
- G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
- G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
- G06K19/0723—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips the record carrier comprising an arrangement for non-contact communication, e.g. wireless communication circuits on transponder cards, non-contact smart cards or RFIDs
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- 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
- G08B13/2434—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
- G08B13/2448—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
- G08B13/2451—Specific applications combined with EAS
- G08B13/2457—Lending systems using EAS tags wherein the tags are reusable, e.g. they can be activated and deactivated more than once, e.g. for a library
-
- 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
- G08B13/2451—Specific applications combined with EAS
- G08B13/2462—Asset location systems combined with EAS
Definitions
- This invention relates generally to identification tags and, more particularly, to a reusable identification tag that uses different combinations of RFTD elements and EAS elements for tag detection, or a single or a plurality of RFTD elements or a plurality of EAS elements, in a re-usable identification tag for use in plural zone detection systems/methods.
- a "hard tag” refers to a re-usable tag which is intended to be removed from an article, e.g., merchandise at the point of sale to be re-used on other merchandise.
- Hard tags typically have an injection-molded outer casing. This type of tag is typically found in the apparel industry.
- one type of EAS hard tag is available from Checkpoint Systems, Inc., Thorofare, New Jersey, and because of its appearance, is referred to as the UFO style, also available in a mini-UFO style, as well as other styles, as can be seen at www.checkpointsystems.com/content/eas/reusable.aspx.
- the UFO style hard tag 1 comprises a housing H in which an EAS element (e.g., a resonant circuit comprising a coil coupled to a capacitor) is contained.
- the EAS element is tuned to a predetermined frequency, e.g., 8.2 MHz.
- the hard tag 1 further includes a detachable portion 4 that comprises a head 5 and pin 6.
- the pointed, free end of the pin 6 is passed through the article A and into a passageway (not shown) in the housing H which contains a locking mechanism (not shown), thereby rendering it nearly impossible for someone to separate the detachable portion 4 from the housing H and release the article A.
- the article A (with the hard tag 1 attached) is attempted to be removed from the store without being purchased, when the article A/hard tag 1 combination is passed through a surveillance field 7 created by a transmitter 8 (e.g., located in pedestals at the exit of the store) tuned to the same frequency as the EAS element, the EAS element resonates, thereby providing an output signal detectable by a receiver 9 (also located in pedestals at the exit of the store) which in turn sets off an alarm.
- the UFO style hard tag 1 is subjected to a magnetic detacher that permits the cashier to remove the pin 6 from the locking mechanism, thereby releasing the detachable portion 4 from the housing and allowing the article A to be free of the tag 1.
- the UFO style hard tag 1 can then be secured to another store item and thereby re-used.
- An RFJD tag 10 basically comprises an RFID element formed by an integrated circuit IC and an RFTD LC circuit/antenna 12 (e.g., a resonant circuit as shown in Fig. 3A, or an antenna as shown in Fig. 3B) tuned to a predetermined RF frequency.
- the integrated circuit IC comprises a memory M that has been programmed with information associated with the article (e.g., product ID information such as a serial number, unique identification number, price, etc.).
- product ID information such as a serial number, unique identification number, price, etc.
- the RFID LC circuit may be similar to the one shown in U.S. Patent No.
- the RFTD antenna may comprise a dipole antenna.
- the tag 10 emits a signal containing the stored information which is then received by a receiver and the information demodulated from the tag-emitted signal. This information can then be used for, among other things, determining whether to set off an alarm or not.
- Fig. 3 depicts a reader 14 that comprises the transmitter and receiver for obtaining the information
- the present invention fulfills these needs by providing RFJD capability in EAS hard tags, or RFID (even plural RFID) capability without EAS capability, or plural EAS capability and systems/methods for implementing plural zone detection systems that use these types of tags.
- an identification tag adapted for use with an article wherein the identification tag comprises: a housing comprising at least one electronic article surveillance (EAS) element and at least one radio frequency identification (RFID) element, wherein the at least one EAS element (e.g., a resonant circuit, an acousto-magnetic element, a low frequency element, etc.) emits a first detectable signal when subjected to an electromagnetic field of a frequency within a first EAS frequency range (e.g., 5 kHz - 14 kHz; or 50 kHz - 70 kHz; or 2 MHz - 14 MHz) and the at least one RFID element emits a second detectable signal when subjected to an electromagnetic field of a frequency within a first RFJD frequency range (e.g., 2 MHz - 14 MHz; or 850 MHz - 950 MHz; or 2.3 GHz - 2.6 GHz).
- EAS electronic article surveillance
- RFID radio frequency identification
- RFID radio frequency identification
- an identification tag adapted for use with an article wherein the identification tag comprises: a housing comprising: a radio frequency identification (RFID) element wherein the RFID element comprises either a resonant circuit tuned to a first RF frequency or an antenna tuned to a second RF frequency, different from the first RF frequency, and wherein the RFJD element comprises an integrated circuit comprising a memory containing information associated with the article; a detachable portion; a releasable securement mechanism (e.g., a spring-loaded, ball/clutch locking device) for releasably securing the housing and the detachable portion together and for securing the identification tag to the article; and wherein the RFID element emits a respective detectable signal when subjected to an electromagnetic field corresponding to the first or second RF frequency, wherein the respective detectable signal contains the information associated with the article.
- RFID radio frequency identification
- An identification tag adapted for use with an article wherein the identification tag comprises: a housing comprising at least two electronic article surveillance (EAS) elements, wherein each EAS element is tuned to a respective EAS frequency; and wherein each of the EAS elements emits a respective detectable signal when subjected to a respective electromagnetic field corresponding to one of the respective EAS frequencies.
- EAS electronic article surveillance
- a system for detecting a re-usable identification tag comprising: at least one re-usable identification tag having at least two elements tuned to respective frequencies and wherein the at least one re-usable identification tag is coupled to an article, wherein the first element emits a first detectable signal when subjected to an electromagnetic field of a first frequency and the second element emitting a second detectable signal when subjected to an electromagnetic field of a second frequency different from the first frequency; a first detection zone comprising at least a first transmitter that emits an electromagnetic field of the first frequency and at least a first receiver that detects the first detectable signal when the at least one re-usable identification tag is present at the first detection zone, wherein the first receiver is coupled to an alarm or a database; and a second detection zone comprising at least a second transmitter that emits an electromagnetic field of the second frequency and at least a second receiver that detects the second detectable signal when the at least one re-usable identification tag is present at the second detection zone, and wherein the second receiver is
- a method for detecting a re-usable identification tag comprising the steps of: providing at least one re-usable identification tag having at least two elements tuned to respective frequencies and wherein the at least one re-usable identification tag is coupled to an article, wherein the first element emits a first detectable signal when subjected to an electromagnetic field of a first frequency and the second element emits a second detectable signal when subjected to an electromagnetic field of a second frequency different from the first frequency; detecting the first detectable signal by at least a first receiver whenever the at least one re-usable identification tag is at a first detection zone and emits the first detectable signal when at least a first transmitter emits an electromagnetic field of the first frequency in the first detection zone; activating an alarm by, or transmitting a status signal or data to a database from, the first receiver when the first detectable signal is detected; detecting the second detectable signal by at least a second receiver whenever the at least one re-usable identification tag is at a second detection zone and emits the second detect
- a system for detecting a re-usable identification tag in at least two environments comprising: at least one re-usable identification tag having at least two elements tuned to respective frequencies and wherein the at least one re-usable identification tag is coupled to an article, wherein the first element emits a first detectable signal when subjected to an electromagnetic field of a first frequency and the second element emits a second detectable signal when subjected to an electromagnetic field of a second frequency different from the first frequency; a first detection zone within a first environment comprising at least a first transmitter that emits an electromagnetic field of the first frequency and at least a first receiver that detects the first detectable signal when the at least one re-usable identification tag is present at the first detection zone, wherein the first receiver is coupled to an alarm or a database; and a second detection zone within the second environment comprises at least a second transmitter that emits an electromagnetic field of the second frequency and at least a second
- a method for detecting a re-usable identification tag with at least two environments comprising the steps of: providing at least one re-usable identification tag having at least two elements tuned to respective frequencies and wherein the at least one re-usable identification tag is coupled to an article, wherein the first element emits a first detectable signal when subjected to an electromagnetic field of a first frequency and the second element emits a second detectable signal when subjected to an electromagnetic field of a second frequency different from the first frequency; detecting the first detectable signal by at least a first receiver whenever the at least one re-usable identification tag is at a first detection zone of a first environment and emits the first detectable signal when at least a first transmitter emits an electromagnetic field of the first frequency in the first detection zone; activating an alarm by, or transmitting a status signal or data to a database from, the first receiver when the first detectable signal is detected; detecting the second
- An identification tag comprising a plurality of elements, each tuned to a respective frequency, for use in at least one environment (e.g., a retail environment, a warehouse, plural retail environments or warehouses, etc.) having at least one transmitter/receiver pair tuned to a respective frequency, and wherein the identification tag comprises at least one element that is tuned to a frequency of the at least one transmitter/receiver pair.
- at least one environment e.g., a retail environment, a warehouse, plural retail environments or warehouses, etc.
- Fig. 1 depicts a prior art re-usable EAS hard tag attached to an article
- Fig. 2 depicts a prior art transmitter/receiver system for an EAS tag
- Fig. 3 depicts a prior art RFID tag reader system
- Fig. 3 A depicts an exemplary resonant circuit forming part of an RFID element
- Fig. 3B depicts an exemplary antenna forming a part of an RFID element
- Fig. 4 is a functional diagram of the hard tag of the present invention.
- Fig.4 A is apian view of an environment depicting an exemplary two zone tag detection system
- Fig. 4B is a plan view of an environment depicting another exemplary plural zone tag detection system
- Fig.5 depicts a first embodiment of the present invention for a combined EAS and RFJD hard tag shown in partial cross-section and exploded to show how it is attached to an article;
- Fig. 6 is a top plan view of a first embodiment, with the top portion of the housing removed, to show the EAS element and the RFID element positioned inside the lower portion of the housing;
- Fig. 7 depicts the RFID element of the present invention showing the RFJD IC and the dipole antenna
- Fig. 8 is a top plan view of a second embodiment, with the top portion of the housing removed, to show the EAS element and the RFID element positioned inside the lower portion of the housing;
- Fig. 9 is an exploded view of the second embodiment of the present invention, with the detachable portion being omitted;
- Fig. 10A is a third embodiment of the present invention hard tag comprising only an RFJD element
- Fig. 1 OB is a fourth embodiment of the present invention hard tag comprising a plurality of RFID elements
- Fig. IOC is a fifth embodiment of the present invention hard tag comprising an EAS element and a plurality of RFJD elements;
- Fig. 11 is a sixth embodiment of the present invention hard tag depicting plural EAS and plural RFJD elements therein.
- the hard tag 20 of the present invention may comprise a variety of combinations of EAS elements and RFJD elements.
- the first element E j may comprise, for example, an EAS element and the second element E 2 may comprise an RFJD element.
- the first element E, and second element E 2 may comprise EAS elements only, or both may comprise RFJD elements only; or there may be any combination of EAS elements and RFTD elements (e.g., elements E 3 ...E n ).
- the EAS elements of the hard tag 20 may operate in any one of the following designated EAS frequency ranges and the RFID elements may operate in any one of the following designated RFID frequency ranges:
- AM Acousto-Magnetic
- UHF Ultrahigh Frequency
- the hard tag 20 may comprise a first EAS element (E,), e.g., a resonant LC circuit, tuned to 8.2 MHz as well as a second EAS element (E 2 ), e.g., an acousto-magnetic (AM) resonating member along with a first RFJD element (E 3 ) tuned to 13.56 MHz and a second RFID element (E 4 ) tuned to 915 MHz.
- E E
- E 2 e.g., an acousto-magnetic
- E 3 a first RFJD element
- E 4 a second RFID element
- the EAS/RFJD identification hard tag 20 can be used in a plural (i.e., at least two) detection zone system 300.
- Fig. 4A shows a plan view of an environment (e.g., retail establishment, warehouse, factory, etc.) whose interior is configured for a two-zone detection system: a first detection zone 302 forms an RFJD detection zone and a second detection zone 304 forms an EAS detection zone.
- the RFJD detection zone 302 may comprise a plurality of readers 14 distributed within that zone 302 (e.g., in the apparel department) and at the periphery of RFJD detection zone 302.
- the article A can be tracked within that zone 302 and as the article A leaves that zone 302 and enters the EAS detection zone 304; the reader 14 can then activate an alarm and/or transmit a status signal or data (e.g., a signal or data including an article identifier, location of article, sales status of article, etc.) to a database.
- the EAS zone 304 comprises a transmitter 8/receiver 9 pair at the exit(s) to the environment which can detect the presence of the tag 20 on the article A should the person attempt to leave without purchasing, or otherwise legally retaining possession of, the article A; the receiver 9 can then activate an alarm.
- Fig. 4B provides another exemplary plural zone detection configuration for another environment (e.g., retail establishment, warehouse, factory, etc.).
- this configuration there are four (again, by way of example only) detection zones DZ1-DZ4. Consequently, the EAS/RFID identification hard tag 20 comprises a corresponding number of elements E r E 4 .
- detection zone DZ1 may comprise an EAS detection zone and detection zones DZ2-DZ4 may comprise RFID detection zones wherein each RFJD detection zone DZ2- DZ4 operates in respective RFJJD frequency ranges.
- one of the elements, e.g., E l9 in the EAS/RFID identification hard tag 20 would comprise an EAS element and the other three elements, E 2 -E 4 , would comprise RFJD elements; RFJD elements E 2 -E 4 would be tuned to respective RFJD frequencies corresponding to the RFJD frequencies in the respective RFJD detection zones DZ2-DZ4.
- RFID readers 14A- 14C are RFJD readers that are tuned to respective RFJD frequency ranges.
- Figs. 4A-4B are by way of example only.
- a variety of detection zone/hard tag element combinations are within the scope of the present invention, such as but not limited to: two EAS detection zones with two RFID detection zones/ two EAS elements with two RFJD elements; three EAS detection zones with three RFJD detection zones/ three EAS elements with three RFJD elements, etc.
- the key feature of the present invention is that for every detection zone DZ i5 there is a corresponding element E ; in the EAS/RFID identification hard tag 20.
- the EAS/RFJD identification hard tag 20 it is within the broadest scope of the invention to include more elements E in the tag 20 than there are detection zones in any one environment.
- the number of elements in the tag 20 does not have to correspond to the number of detection zones in any one environment.
- the hard tag 20 may comprise four elements, each having their own operative frequency in one of the frequency ranges depicted above. Initially, the tag 20 is coupled to an article for use in a first environment where, for example, three detection zones may be used wherein three of the internal elements E, , E 3 and E 4 correspond to the three detection zone frequencies used in the first environment.
- the tag 20 can be used in the second environment.
- Fig. 5 shows the internal elements of an EAS/RFID identification hard tag 20 in accordance with a first embodiment of the present invention.
- the tag 20 comprises a casing or housing H and further includes a locking mechanism 21 (e.g., a spring-loaded, ball/clutch locking device used in Checkpoint System Inc.'s UFO style hard tags).
- the EAS/RFID identification hard tag 20 further comprises a detachable portion 24 that includes a head 25 and pin 26 that permits the EAS/RFJD identification hard tag 20 to be attached to an article A, as discussed previously.
- the housing H may include an extension 225 (see Fig. 11) to house the additional elements E n .
- the tag 20 comprises an RFID element 28 and an EAS element 30.
- the RFID element 28 includes a dipole antenna 32 extending around the outer rim of the housing H.
- a conventional RFID chip 34 is attached to the dipole antenna 32.
- the RFID chip 34 comprises a memory that is programmed with information associated with the article (e.g., product information such as serial number, price, etc.).
- One suitable RFJD element 28, is a dipole antenna and chip combination available from Matrics, Inc., Columbia, Maryland, and having part number SDR- 001, shown in Fig. 7 (the chip is on the reverse side and thus is not visible in Fig. 7). This part number is an inlay ID medium strip, by way of example only.
- the RFID element 28 operates in the RFID UHF band, (850 MHz - 950 MHz), e.g., 915 MHz.
- the EAS element 30 (also, referred to as the "EAS coil” or “inner coil”) is of conventional design, and is similar to the EAS resonant circuit in a Checkpoint mini-UFO tag discussed previously.
- the EAS element 30 has a copper coil 36 and a surface-mounted capacitor 38, and operates in the EAS RF band, (2 MHz - 14 MHz), e.g., 8.2 MHz.
- UFO and mini-UFO hard tags do not currently have an RFID element 28.
- the addition of an RFID element 28 to such tags enhances the versatility and functionality of such tags. Certain design considerations must be adhered to for proper functioning of the combined EAS/RFJD identification hard tag 20.
- the relative spacing between the RFID element 28 and the EAS element 30 should be arranged in a particular manner to maximize the detectability performance of both elements.
- one or both elements 28/30 of the tag portions may not function at all if the relative spacing is outside of a certain range.
- Fig.6 shows one arrangement of portions having a relative spacing there between that has been determined to allow both portions to function in an optimal manner.
- the RFJD element 28 and the EAS element 30 must be held in position with respect to each other and relative to the locking mechanism 21. That is, there should be no movement of the RFJD element 28 with respect to the EAS element 30 (i.e., no floating elements), nor with any elements located in the extension 225. Also, the EAS element 30 should be held "on center" with respect to the central axis of the housing H. Both of these conditions can be met by using any suitable techniques that hold both portions securely in place (e.g., adhesives, etc.) within the housing H, and which do not interfere with the electrical properties of either element.
- Fig. 8 shows the internal elements of an EAS/RFID identification hard tag 120 in accordance with a second embodiment of the present invention.
- the tag 120 is similar to the tag 20, except that the tag 120 has an RFID element 128 made from an RFID coil 132 and an associated RFJD chip module 134, and which resonates (operates) in the RFJD RF band (2 MHz - 14MHz) e.g., 13.56 MHz.
- the RFID element 128 in Fig. 8 may also be referred to as the "RFJD coil” or "outer coil”.
- Fig. 9 shows the tag 128 in an exploded view.
- the RFJD element 128 may be secured to the lower portion of the housing H using an adhesive and the EAS element 30 may be secured to the upper portion of the housing H also using an adhesive, thereby maintaining these two elements at the relative spacing mentioned earlier.
- the scope of the present invention is not limited to the specific elements described above, and includes other types of RFJD elements (including other lengths and widths of dipole antennas), EAS elements, other RF and EAS frequencies, and variations in the housing design.
- the preferred embodiment of the present invention provides for a combined EAS/RFID identification hard tag.
- the scope of the present invention also includes at least the following alternative embodiments:
- a hard tag having only one RFID element such as, but not limited to, those shown previously as RFJD elements 28, 128, 202 (microwave), etc.
- One version of this alternative embodiment merely eliminates the EAS element 30 shown in Figs. 6, 8 and 9.
- a hard tag having multiple RFID elements(with different resonant frequencies) such as, but not limited to, those shown previously as RFJD elements 28, 128, 202 (microwave), etc., with an EAS element (Fig. 10B), or without an EAS element (Fig. IOC).
- a hard tag having plural EAS elements and plural RFID elements may comprise the extension 225 to house a microwave element 202 as well as an acousto-magnetic (AM) element 204 (e.g., magneto-restrictive element in combination with a magnetic bias strip-see Fig. 11).
- the plural EAS elements are formed by the coil 36/capacitor 38 and the AM element 204
- the RFJD elements are formed by the RFID IC 34/coil 132 and the microwave element 202.
- a low frequency (LF) element similar to the AM element but which provides an harmonic response in the LF band, can be disposed in the extension 225 to provide EAS operation in the LF frequency range.
- a hard tag having multiple EAS elements (with different resonant frequencies) and no RFID elements.
- a hard tag may include the coil 36/capacitor 38 circuit along with the acousto-magnetic element 204, thereby forming an EAS hard tag with at least two EAS operative frequencies.
Abstract
Description
Claims
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP04752782A EP1625558B1 (en) | 2003-05-19 | 2004-05-19 | Eas/rfid identification hard tags |
CN200480013985.6A CN1791895B (en) | 2003-05-19 | 2004-05-19 | EAS/RFID identification hard tags |
AU2004241593A AU2004241593B9 (en) | 2003-05-19 | 2004-05-19 | EAS/RFID identification hard tags |
MXPA05012568A MXPA05012568A (en) | 2003-05-19 | 2004-05-19 | Eas/rfid identification hard tags. |
JP2006533246A JP4370330B2 (en) | 2003-05-19 | 2004-05-19 | Electronic merchandise monitoring / wireless identification hard tag |
DE602004012090T DE602004012090T2 (en) | 2003-05-19 | 2004-05-19 | EAS / RFID IDENTIFICATION LABEL |
CA2526413A CA2526413C (en) | 2003-05-19 | 2004-05-19 | Eas/rfid identification hard tags |
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JP2008530691A (en) * | 2005-02-10 | 2008-08-07 | センサーマティック・エレクトロニクス・コーポレーション | Alarm investigation using RFID |
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Also Published As
Publication number | Publication date |
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AU2004241593A1 (en) | 2004-12-02 |
EP1625558A1 (en) | 2006-02-15 |
KR20060028677A (en) | 2006-03-31 |
DE602004012090D1 (en) | 2008-04-10 |
AU2004241593A2 (en) | 2004-12-02 |
MXPA05012568A (en) | 2006-02-08 |
CA2526413C (en) | 2010-07-27 |
CA2526413A1 (en) | 2004-12-02 |
JP2007504572A (en) | 2007-03-01 |
JP4370330B2 (en) | 2009-11-25 |
ATE387693T1 (en) | 2008-03-15 |
ES2303084T3 (en) | 2008-08-01 |
EP1625558B1 (en) | 2008-02-27 |
AU2004241593B9 (en) | 2007-03-08 |
US7183917B2 (en) | 2007-02-27 |
US20040233042A1 (en) | 2004-11-25 |
AU2004241593B2 (en) | 2007-02-01 |
DE602004012090T2 (en) | 2009-02-26 |
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