US20050270159A1 - Combination radio frequency identification transponder (RFID Tag) and magnetic electronic article surveillance (EAS) tag - Google Patents

Combination radio frequency identification transponder (RFID Tag) and magnetic electronic article surveillance (EAS) tag Download PDF

Info

Publication number
US20050270159A1
US20050270159A1 US11/155,334 US15533405A US2005270159A1 US 20050270159 A1 US20050270159 A1 US 20050270159A1 US 15533405 A US15533405 A US 15533405A US 2005270159 A1 US2005270159 A1 US 2005270159A1
Authority
US
United States
Prior art keywords
transponder
field
article
tag
radio frequency
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.)
Abandoned
Application number
US11/155,334
Inventor
Michael Brady
Thomas Cofino
Richard Gambino
Paul Moskowitz
Alejandro Schrott
Robert von Gutfeld
Original Assignee
Brady Michael J
Cofino Thomas A
Gambino Richard J
Moskowitz Paul A
Schrott Alejandro G
Gutfeld Robert J Von
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
Priority to US51470595A priority Critical
Priority to US08/569,375 priority patent/US5812065A/en
Priority to US7013697P priority
Priority to US09/071,413 priority patent/US5939984A/en
Priority to US9308898P priority
Priority to US09/136,157 priority patent/US6535108B1/en
Priority to US10247698P priority
Priority to US18150598A priority
Priority to US10/391,515 priority patent/US7123129B1/en
Priority to US10/772,221 priority patent/US7002475B2/en
Priority to US10/985,665 priority patent/US7084770B2/en
Application filed by Brady Michael J, Cofino Thomas A, Gambino Richard J, Moskowitz Paul A, Schrott Alejandro G, Gutfeld Robert J Von filed Critical Brady Michael J
Priority to US11/155,334 priority patent/US20050270159A1/en
Publication of US20050270159A1 publication Critical patent/US20050270159A1/en
Application status is Abandoned legal-status Critical

Links

Images

Classifications

    • GPHYSICS
    • G08SIGNALLING
    • G08BSIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00Burglar, theft or intruder alarms
    • G08B13/22Electrical actuation
    • G08B13/24Electrical actuation by interference with electromagnetic field distribution
    • G08B13/2402Electronic 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
    • G08B13/2405Electronic 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
    • G08B13/2408Electronic 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
    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06KRECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/04Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the shape
    • G06K19/041Constructional details
    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06KRECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06Record 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
    • G06K19/067Record 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
    • G06K19/07Record 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
    • G06K19/077Constructional details, e.g. mounting of circuits in the carrier
    • G06K19/07749Constructional 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
    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06KRECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06Record 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
    • G06K19/067Record 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
    • G06K19/07Record 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
    • G06K19/077Constructional details, e.g. mounting of circuits in the carrier
    • G06K19/07749Constructional 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
    • G06K19/07773Antenna details
    • G06K19/07786Antenna details the antenna being of the HF type, such as a dipole
    • GPHYSICS
    • G08SIGNALLING
    • G08BSIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00Burglar, theft or intruder alarms
    • G08B13/22Electrical actuation
    • G08B13/24Electrical actuation by interference with electromagnetic field distribution
    • G08B13/2402Electronic 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
    • G08B13/2405Electronic 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
    • G08B13/2414Electronic 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
    • GPHYSICS
    • G08SIGNALLING
    • G08BSIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00Burglar, theft or intruder alarms
    • G08B13/22Electrical actuation
    • G08B13/24Electrical actuation by interference with electromagnetic field distribution
    • G08B13/2402Electronic 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
    • G08B13/2405Electronic 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
    • G08B13/2414Electronic 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
    • G08B13/2417Electronic 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
    • GPHYSICS
    • G08SIGNALLING
    • G08BSIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00Burglar, theft or intruder alarms
    • G08B13/22Electrical actuation
    • G08B13/24Electrical actuation by interference with electromagnetic field distribution
    • G08B13/2402Electronic 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
    • G08B13/2428Tag details
    • G08B13/2434Tag housing and attachment details
    • GPHYSICS
    • G08SIGNALLING
    • G08BSIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00Burglar, theft or intruder alarms
    • G08B13/22Electrical actuation
    • G08B13/24Electrical actuation by interference with electromagnetic field distribution
    • G08B13/2402Electronic 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
    • G08B13/2428Tag details
    • G08B13/2437Tag layered structure, processes for making layered tags
    • GPHYSICS
    • G08SIGNALLING
    • G08BSIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00Burglar, theft or intruder alarms
    • G08B13/22Electrical actuation
    • G08B13/24Electrical actuation by interference with electromagnetic field distribution
    • G08B13/2402Electronic 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
    • G08B13/2428Tag details
    • G08B13/2437Tag layered structure, processes for making layered tags
    • G08B13/244Tag manufacturing, e.g. continuous manufacturing processes
    • GPHYSICS
    • G08SIGNALLING
    • G08BSIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00Burglar, theft or intruder alarms
    • G08B13/22Electrical actuation
    • G08B13/24Electrical actuation by interference with electromagnetic field distribution
    • G08B13/2402Electronic 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
    • G08B13/2428Tag details
    • G08B13/2437Tag layered structure, processes for making layered tags
    • G08B13/2442Tag materials and material properties thereof, e.g. magnetic material details
    • GPHYSICS
    • G08SIGNALLING
    • G08BSIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00Burglar, theft or intruder alarms
    • G08B13/22Electrical actuation
    • G08B13/24Electrical actuation by interference with electromagnetic field distribution
    • G08B13/2402Electronic 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
    • G08B13/2428Tag details
    • G08B13/2448Tag 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
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H01L2224/00Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
    • H01L2224/01Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
    • H01L2224/42Wire connectors; Manufacturing methods related thereto
    • H01L2224/47Structure, shape, material or disposition of the wire connectors after the connecting process
    • H01L2224/48Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
    • H01L2224/4805Shape
    • H01L2224/4809Loop shape
    • H01L2224/48091Arched
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H01L2924/00Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
    • H01L2924/01Chemical elements
    • H01L2924/01078Platinum [Pt]
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H01L2924/00Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
    • H01L2924/01Chemical elements
    • H01L2924/01079Gold [Au]
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H01L2924/00Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
    • H01L2924/10Details of semiconductor or other solid state devices to be connected
    • H01L2924/102Material of the semiconductor or solid state bodies
    • H01L2924/1025Semiconducting materials
    • H01L2924/10251Elemental semiconductors, i.e. Group IV
    • H01L2924/10253Silicon [Si]
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H01L2924/00Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
    • H01L2924/30Technical effects
    • H01L2924/301Electrical effects
    • H01L2924/3025Electromagnetic shielding

Abstract

A combination of a radio frequency identification transponder (RFID Tag) and to a magnetic electronic article surveillance (EAS) device is disclosed. The present invention relates generally to radio frequency identification (RFID) systems, and more specifically to RFID transponders for use in RFID systems and the method for their assembly.

Description

    CROSS-REFERENCE TO RELATED APPLICATIONS
  • The present application is a continuation of application Ser. No. 10/985,665 filed Nov. 10, 2004, which is a continuation of application Ser. No. 10/772,221 filed Feb. 4, 2004, which is a continuation of application Ser. No. 09/181,505 filed Oct. 28, 1998, now abandoned, which is a continuation in part of U.S. application Ser. No. 09/071,413 filed May 1, 1998, now U.S. Pat. No. 5,939,984 issued Aug. 17, 1999. Said application Ser. No. 09/071,413 in turn claims the benefit of U.S. Provisional Application No. 60/070,136 filed Dec. 31, 1997. Said application Ser. No. 09/181,505 claims the benefit of U.S. Provisional Application No. 60/102,476 filed Sep. 30, 1998, and also claims the benefit of U.S. Provisional Application No. 60/093,088 filed Jul. 16, 1998. The present application is also a continuation in part of application Ser. No. 10/391,515 filed Mar. 18, 2003, which is a continuation of application Ser. No. 09/136,157 filed Aug. 18, 1998, now U.S. Pat. No. 6,535,108 issued Mar. 18, 2003, which is a continuation of application Ser. No. 08/569,375 filed Dec. 8, 1995, now U.S. Pat. No. 5,812,065 issued Sep. 22, 1998, which is a continuation in part of application Ser. No. 08/514,705 filed Aug. 14, 1995, now abandoned. Said U.S. Pat. No. 5,812,065, and said application Ser. Nos. 09/071,413, 60/093,088 and 60/102,476 are herein incorporated by reference in their entirety.
  • INCORPORATION BY REFERENCE
  • The following US Patents and Patent Applications are hereby incorporated herein by reference in their entirety:
  • U.S. Patents
  • Patent No. Issue Date Filing Date Attorney Docket No. 5,521,601 May 28, 1996 Apr. 21, 1995 YO995-0088 5,528,222 Jun. 18, 1996 Sep. 09, 1994 YO994-180 5,538,803 Jul. 23, 1996 Nov. 23, 1994 YO994-0073 5,550,547 Aug. 27, 1996 Sep. 12, 1994 YO994-185 5,552,778 Sep. 03, 1996 Nov. 23, 1994 YO994-0232 5,554,974 Sep. 10, 1995 Nov. 23, 1994 YO994-0071 5,563,583 Oct. 08, 1996 Nov. 23, 1994 YO994-070 5,565,847 Oct. 15, 1996 Nov. 23, 1994 YO994-0072 5,606,323 Feb. 25, 1997 Aug. 31, 1995 YO995-157 5,635,693 Jun. 03, 1997 Feb. 02, 1995 YO994-0215 5,673,037 Sep. 30, 1997 Sep. 09, 1994 YO994-184 5,680,106 Oct. 21, 1997 Oct. 27, 1995 YO995-0219 5,682,143 Oct. 28, 1997 Sep. 09, 1994 YO994-170 5,729,201 Mar. 17, 1998 Jun. 29, 1995 YO995-109 5,729,697 Mar. 17, 1998 Apr. 24, 1995 YO995-076 5,736,929 Apr. 07, 1998 Jun. 07, 1996 YO996-085 5,739,754 Apr. 14, 1998 Jul. 29, 1996 YO996-115 5,767,789 Jun. 16, 1998 Aug. 31, 1995 YO994-213 5,777,561 Jul. 07, 1998 Sep. 30, 1996 YO996-178 5,786,626 Jul. 28, 1998 Mar. 25, 1996 YO996-031 5,812,065 Sep. 22, 1998 Dec. 08, 1995 YO995-124X 5,821,859 Oct. 13, 1998 Jun. 07, 1996 YO996-084 5,828,318 Oct. 27, 1998 May 08, 1996 YO996-068 5,831,532 Nov. 03, 1998 Aug. 12, 1997 YO995-109B 5,850,181 Dec. 15, 1998 Apr. 03, 1996 YO995-158 5,874,902 Feb. 23, 1999 Jul. 29, 1996 YO996-037 5,889,489 Mar. 30, 1999 Oct. 17, 1996 YO996-195 5,909,176 Jun. 01, 1999 Oct. 23, 1997 YO997-310 5,942,987 Aug. 24, 1999 Aug. 09, 1996 YO995-218 5,966,082 Oct. 12, 1999 May 23, 1997 YO997-115 6,028,564 Feb. 22, 2000 Jan. 29, 1997 YO997-023 6,097,347 Aug. 01, 2000 Jan. 29, 1997 YO997-024 6,288,629 Sep. 11, 2001 May 23, 1997 YO997-114
  • U.S. Provisional Patent Applications
  • Application No. Filing Date Attorney Docket No. 60/073,102 Jan. 30, 1998 YO897-0028P1 60/074,605 Feb. 13, 1998 YO897-0259P1 60/077,879 Mar. 13, 1998 YO997-0038P1 60/078,287 Mar. 17, 1998 YO897-0661P1 60/091,350 Jul. 01, 1998 YO897-0259P2 60/078,304 Mar. 17, 1998 YO897-0662P1 60/093,088 Jul. 16, 1998 38384P1
  • The following further documents are also incorporated herein by reference in their entirety:
  • IBM Technical Disclosure Bulletin
  • IBM Technical Disclosure Bulletin, Vol. 38, No. 08, August 1995, page 17, “Multifunction Credit Card Package,” by Brady, Moskowitz, and Murphy.
  • Literature Reference
  • D. Friedman, H. Heinrich, D. Duan, “A low-power CMOS integrated circuit for field-powered radio frequency identification (RFID) tags,” 1997 Digest of Technical Papers of the IEEE International Solid-State Circuits Conference (ISSCC), San Francisco, Calif., February 1997.
  • PCT Published International Applications
  • Published. Publication Application No. Date Filing Date Attorney Docket No. WO 96/13793 May 09, 1996 Sep. 20, 1995 YO994-242 PCT WO 97/09641 Mar. 13, 1997 Jan. 15, 1996 UK9-94-066 PCT
  • The present invention relates to an identification tag and more particularly to an identification tag having a large number of bits of information, where the identification tag has an electronic article surveillance function which is difficult to defeat.
  • DESCRIPTION OF THE RELATED ART
  • Radio frequency identification transponders (RFID Tags) have been developed in the last years to take advantage of the fall in semiconductor logic and memory prices. Such tags are available having a single silicon chip attached to a wire or patch antenna. Such tags, however, may be shielded from the high frequency RF used to communicate with the tags. The anti-theft properties of the RFID tags are suspect.
  • Magnetic electronic article surveillance (EAS) tags are much less easily shielded from the low frequency magnetic detection fields. Such EAS tags as described below, however, have possibilities of storing only a few bits of information.
  • Some conventional magnetic EAS tags have employed the Barkhausen jump effect. Generally, the Barkhausen effect is characterized by a tendency for magnetization induced in a magnetic material to change in discrete steps as an external magnetic field is increased or decreased. (The material is said to be a non-linear magnetic material if the magnetisation of the material is not proportional to the external magnetic field.) A large temporal flux change, df/dt, occurs when such a step takes place, and a sizable voltage may be induced in a sensing or pickup coil.
  • For example. U.S. Pat. No. 5,181,020 describes a thin-film magnetic tag having a magnetic thin film formed on a polymer substrate and a method for producing the same. The thin film exhibits a large Barkhausen discontinuity without intentional application of external torsional or tensile stress on use. A particular disclosed use is as a marker or tag for use in an article surveillance system wherein articles may be identified by interrogating the tagged article in a cyclic magnetic field of a predetermined frequency in a surveillance area and detecting a harmonic wave of the magnetic field generated by the tag in the surveillance area. This conventional system is only a single bit element using a single Barkhausen layer with no ability to develop a code to distinguish items.
  • U.S. Pat. No. 5,313,192 describes another single bit tag which relies on the Barkhausen effect. The tag of this invention is selected to include a first component comprised of a soft magnetic material which constitutes the bulk of the tag. A second component comprised of a semi-hard or hard magnetic material is integral with the first component. The tag is conditioned such that the second component has activating and deactivating states for placing the tag in active and deactivated states, respectively. Such conditioning includes subjecting the composite tag to predetermined magnetic fields during thermal processing stages. By switching the second component between its activating and deactivating states the tag can be switched between its active and deactived states. A reusable tag with desired step changes in flux which is capable of deactivation and reactivation is thereby realized.
  • U.S. Pat. No. 4,980,670 describes a one bit magnetic tag formed from a magnetic material having domains with a pinned wall configuration. The resulting hysteresis characteristic for that material is such that upon subjecting the material to an applied alternating magnetic field, the magnetic flux of the material undergoes a regenerative step change in flux (Barkhausen jump) at a threshold value when the field increases to the threshold value from substantially zero and undergoes a gradual change in flux when the field decreases from the threshold value to substantially zero. For increasing values of applied field below the threshold, there is substantially no change in the magnetic flux of the material. The tag may be deactivated by preventing the domain walls from returning to their pinned condition by, for example, application of a field of sufficiently high frequency and/or amplitude.
  • U.S. Pat. No. 4,940,966 describes the use of a plurality of magnetic elements in predetermined associations (e.g. with predetermined numbers of magnetic elements and with predetermined spacings between said elements), for identifying or locating preselected categories of articles. When the articles are caused to move relative to a predetermined interrogating magnetic field, each particular association of magnetic elements gives rise to a magnetic signature whereby the article or category of article carrying each of the predetermined associations can be recognized and/or located.
  • U.S. Pat. No. 4,660,025 describes a marker for use in an electronic surveillance system. The marker which can be in the form of a wire or strip of magnetic amorphous metal is characterized by having retained stress and a magnetic hysteresis loop with a large Barkhausen discontinuity. When the marker is exposed to an external magnetic field whose field strength, in the direction opposing the instantaneous magnetic polarization of the marker, exceeds a predetermined threshold value a regenerative reversal of the magnetic polarization of the marker occurs and results in the generation of a harmonically rich pulse that is readily detected and easily distinguished.
  • U.S. Pat. No.5,175,419 describes a method for interrogating an identification tag comprised of a plurality of magnetic thin wires or thin bands which have highly rectangular hysteresis curves and different coercive forces. The wires or bands are preferably of amorphous material, but means for obtaining the highly rectangular hysteresis curves and different coercive forces are not taught; nor is the concept taught of using a time varying magnetic field superimposed on a ramp field for interrogation.
  • U.S. Pat. No. 5,729,201 describes an inexpensive multibit magnetic tag is described which uses an array of amorphous wires in conjunction with a magnetic bias field. The tag is interrogated by the use of a ramped field or an ac field or a combination of the two. The magnetic bias is supplied either by coating each wire with a hard magnetic material which is magnetized or by using magnetized hard magnetic wires or foil strips in proximity to the amorphous wires. Each wire switches at a different value of the external interrogation field due to the differences in the magnetic bias field acting on each wire.
  • The above identified U.S. Patents and the following related U.S. Patents assigned to the assignee of the present invention are hereby incorporated by reference: U.S. Pat. Nos. 5,528,222; 5,550,547; 5,552,778; 5,554,974; 5,538,803; 5,563,583; 5,565,847; 5,606,323; 5,521,601; 5,635,693; 5,673,037; 5,682,143: 5,680,106; 5,729,201; and 5,729,607. U.S. Patent applications assigned to the assignee of the present invention include: Ser. No. 08/303,965 filed Sep. 9, 1994 entitled RF Group Select Protocol, by Cesar et al.; Ser. No. 08/621,784, filed on Mar. 25, 1996 entitled “Thin Radio Frequency Transponder with Lead Frame” by Brady et al. (pending); Ser. No. 08/626,820, Filed: Apr. 3, 1996, entitled “Method of Transporting RF Power to Energize Radio Frequency Transponders” by Heinrich et al.; application submitted Aug. 9, 1996 entitled RFID System with Broadcast Capability by Cesar et al.; application submitted Jul. 29, 1996 entitled RFID transponder with Electronic Circuitry Enabling and Disabling Capability, by Heinrich et al.; Ser. No. 08/592,250; Ser. No. 08/496,838; Ser. No. 08/496,838; Ser. No. 08/909,719; Ser. No. 08/621,784,660,249; Ser. No. 08/660,261; Ser. No. 08/790,640; Ser. No. 08/790.639; and Ser. No. 08/681,742. The above identified U.S. Patents and U.S. Patent applications are hereby incorporated by reference.
  • SUMMARY OF THE INVENTION
  • An RFID tag is combined with a magnetic EAS tag. The conducting elements of the RFID tag such as the antenna or the parasitic elements used to tune the antenna characteristics may be wholly or partially made from a non-linear magnetic material which produces a large signal in a magnetic EAS detection field. The non-linear magnetic material may be coated or electroplated or electrolessly plated with a good electrical conductor to enhance the antenna characteristics of the RFID tag. The non-linear magnetic material may be advantageously connected to dielectric material used to support and/or encapsulate the antenna and electronic components of the RFID tag.
  • BRIEF DESCRIPTION OF THE DRAWINGS
  • FIG. 1 shows block diagram of an RF tag of the invention;
  • FIG. 2 shows a block diagram of an RFID tag;
  • FIG. 3 shows an elevation sketch of a physical layout for the sketch of FIG. 2;
  • FIG. 4 shows an alternative arrangement of FIG. 2;
  • FIG. 5 shows perspective sketch of a preferred alternative antenna arrangement for an RFID tag;
  • FIG. 6 shows a perspective sketch of a patch antenna mounted coplanar with a non-linear magnetic material;
  • FIG. 7 shows an elevation sketch of the apparatus of FIG. 5; and
  • FIG. 8 shows an elevation sketch of the apparatus of FIG. 6 showing the supporting dielectric material.
  • DETAILED DESCRIPTION OF THE INVENTION
  • FIG. 1 shows block diagram of an RF tag 10 having tag electronics 12, a tag memory 14, and a tag power supply 16 connected to a tag antenna 18. The tag antenna 18 is shown in this embodiment made from a non-linear magnetic material 17. Such non-linear magnetic materials may have electrical conductivity insufficient for high quality antennas, and an alternative most preferred embodiment is to coat the non-linear magnetic material with a good electrical conducting material 19 such as copper, gold, or a conducting polymer. The conducting material 19 need only be as thick as the skin depth of the high frequency RF signals sent to the RFID tag 10. Such conducting material 19 may be coated on the non-linear magnetic material 17 by coating processes well known in the art such as evaporation, electroplating, or electroless plating.
  • FIG. 2 shows a sketch of an RFID tag 10 having a tag antenna 18 electrically and spatially separated from a non-linear magnetic material 17. In the embodiment shown, the non-linear material is shown as a wire placed as a parasitic element to a dipole antenna 18 of the RFID tag 10. A preferred embodiment in this case also is to have the non-linear material 17 coated with an electrically conducting material if the electrical resistivity of the non-linear material 17 is too high.
  • FIG. 3 shows an elevation sketch of a physical layout for the sketch of FIG. 2. The dipole antenna 18 is connected to a silicon chip 34 containing the tag memory, tag electronics, and tag power supply by wires 36 and 38. The antenna 18 and the chip 34 are mounted on a dielectric material 32. The non-linear material 17 is mounted on the opposite side of the dielectric material 32 to the antenna 18 and chip 34. In this embodiment, the non-linear material 17 may once again be coated with a good electrical conductor.
  • FIG. 4 shows an alternative arrangement of FIG. 2. The silicon chip 34, the antenna 18, and the non-linear material 17 are all mounted on the same side of a supporting structure made of dielectric 32. In this embodiment the non-linear material 17 may once again preferrably be coated with a good electrical conductor.
  • FIG. 5 shows perspective sketch of a preferred alternative antenna arrangement for an RFID tag. A silicon chip 34 is electrically attached to an electrially conducting patch antenna 50. The silicon chip is also electrically attached to an electrically conducting ground plane 52, which is spatially separated from the patch antenna 50 by a dielectric material (not shown). In the embodiment shown in FIG. 5, the electrically conducting ground plane 52 is made from non-linear magnetic material 17. In this embodiment, the non-linear material 17 may once again preferrably be coated with a good electrical conductor
  • FIG. 6 shows a perspective sketch of a patch antenna mounted coplanar with a non-linear magnetic material 17. The magnetic material may be in the form of a wire or in the form of a sheet as shown in the diagram.
  • FIG. 7 shows an elevation sketch of the apparatus of FIG. 5. In this case, the dielectric material 32 supporting the patch antenna, the chip 34, and the ground plane 52 is explicitly shown. The alternative embodiment having a conducting material 19 coating the non-linear material is also shown. In this case, the material of the patch antenna 50 is alternatively made of a non-linear magnetic material instead of the ground plane 52. Once again, the non-linear material 17 may once again preferably be coated with a good electrical conductor
  • FIG. 8 shows an elevation sketch of the apparatus of FIG. 6 showing the supporting dielectric material 32.

Claims (20)

1. A system for anti-theft protection and article identification, comprising
a transponder having an anti-theft portion for signaling the status of the article; and
an article identification portion for providing coded article information.
2. The system of claim 1, wherein the article identification portion is associated with an article, and communicates with a database to provide information concerning the identity of the article.
3. The system of claim 1, wherein the anti-theft portion communicates information indicating whether or not a given article has been paid for.
4. The system of claim 1, further comprising an interrogator for interrogating the transponder to obtain status and article identification information
5. The method of monitoring the movement of items, which comprises
associating a transponder with each of the items which transponder is operative to supply status and identity information for the associated item in response to interrogation thereof; and
interrogating the transponder to obtain both status and identity information therefrom for the associated item.
6. The method of claim 5, wherein the status information indicates whether or not a given item has been paid for, so that the identity information is available to identify the frequency of attempted theft for a given item.
7. The method of claim 5, wherein the interrogating step comprises applying a radio frequency field to the transponder.
8. The method of claim 7, wherein the transponder has a circuit which is generally resonant at the frequency of the radio frequency field.
9. The method of claim 7, further comprising applying an auxiliary field to the transponder.
10. The method of claim 9, wherein the auxiliary field is a magnetic field.
11. The method of claim 9, wherein the auxiliary field is an electromagnetic field.
12. A transponder comprising:
an anti-theft portion: and
an article identification portion.
13. The transponder of claim 12, wherein the article identification portion is associated with an article, and communicates with a database to provide information concerning the identity of the article.
14. The transponder of claim 12, wherein the anti-theft portion supplies status information in response to an interrogating field.
15. The transponder of claim 12, wherein the transponder is subjected to a radio frequency field.
16. The transponder of claim 15, wherein the transponder has a circuit which is generally resonant at the frequency of the radio frequency field.
17. The transponder of claim 15, wherein the transponder is further subjected to an auxiliary field.
18. The transponder of claim 15, wherein the transponder is further subjected to a magnetic field.
19. The transponder of claim 15, wherein the transponder is further subjected to an electromagnetic field.
20. The transponder of claim 15, wherein the transponder is further subjected to an acoustic energy field.
US11/155,334 1995-08-14 2005-06-18 Combination radio frequency identification transponder (RFID Tag) and magnetic electronic article surveillance (EAS) tag Abandoned US20050270159A1 (en)

Priority Applications (12)

Application Number Priority Date Filing Date Title
US51470595A true 1995-08-14 1995-08-14
US08/569,375 US5812065A (en) 1995-08-14 1995-12-08 Modulation of the resonant frequency of a circuit using an energy field
US7013697P true 1997-12-31 1997-12-31
US09/071,413 US5939984A (en) 1997-12-31 1998-05-01 Combination radio frequency transponder (RF Tag) and magnetic electronic article surveillance (EAS) material
US9308898P true 1998-07-16 1998-07-16
US09/136,157 US6535108B1 (en) 1995-08-14 1998-08-18 Modulation of the resonant frequency of a circuit using an energy field
US10247698P true 1998-09-30 1998-09-30
US18150598A true 1998-10-28 1998-10-28
US10/391,515 US7123129B1 (en) 1995-08-14 2003-03-18 Modulation of the resonant frequency of a circuit using an energy field
US10/772,221 US7002475B2 (en) 1997-12-31 2004-02-04 Combination radio frequency identification transponder (RFID tag) and magnetic electronic article surveillance (EAS) tag
US10/985,665 US7084770B2 (en) 1997-12-31 2004-11-10 Combination radio frequency identification transponder (RFID tag) and magnetic electronic article surveillance (EAS) tag
US11/155,334 US20050270159A1 (en) 1995-08-14 2005-06-18 Combination radio frequency identification transponder (RFID Tag) and magnetic electronic article surveillance (EAS) tag

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US11/155,334 US20050270159A1 (en) 1995-08-14 2005-06-18 Combination radio frequency identification transponder (RFID Tag) and magnetic electronic article surveillance (EAS) tag

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
US10/391,515 Continuation-In-Part US7123129B1 (en) 1995-08-14 2003-03-18 Modulation of the resonant frequency of a circuit using an energy field
US10/985,665 Continuation US7084770B2 (en) 1997-12-31 2004-11-10 Combination radio frequency identification transponder (RFID tag) and magnetic electronic article surveillance (EAS) tag

Publications (1)

Publication Number Publication Date
US20050270159A1 true US20050270159A1 (en) 2005-12-08

Family

ID=33556715

Family Applications (3)

Application Number Title Priority Date Filing Date
US10/772,221 Expired - Fee Related US7002475B2 (en) 1997-12-31 2004-02-04 Combination radio frequency identification transponder (RFID tag) and magnetic electronic article surveillance (EAS) tag
US10/985,665 Expired - Lifetime US7084770B2 (en) 1997-12-31 2004-11-10 Combination radio frequency identification transponder (RFID tag) and magnetic electronic article surveillance (EAS) tag
US11/155,334 Abandoned US20050270159A1 (en) 1995-08-14 2005-06-18 Combination radio frequency identification transponder (RFID Tag) and magnetic electronic article surveillance (EAS) tag

Family Applications Before (2)

Application Number Title Priority Date Filing Date
US10/772,221 Expired - Fee Related US7002475B2 (en) 1997-12-31 2004-02-04 Combination radio frequency identification transponder (RFID tag) and magnetic electronic article surveillance (EAS) tag
US10/985,665 Expired - Lifetime US7084770B2 (en) 1997-12-31 2004-11-10 Combination radio frequency identification transponder (RFID tag) and magnetic electronic article surveillance (EAS) tag

Country Status (1)

Country Link
US (3) US7002475B2 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060220869A1 (en) * 2005-03-15 2006-10-05 Intermec Ip Corp. Tunable RFID tag for global applications
US20070159336A1 (en) * 2006-01-06 2007-07-12 Sdgi Holdings, Inc Coiled RFID tag
EP1868248A1 (en) * 2006-06-13 2007-12-19 Kopf AG Anti-theft device for a photovoltaic installation
US20080018428A1 (en) * 2005-01-17 2008-01-24 Fujitsu Limited Communication device and communication method
US20100001079A1 (en) * 2008-02-27 2010-01-07 Tagsys Sas Combined EAS/RFID tag
US8179261B2 (en) 2006-06-20 2012-05-15 AbsoluteSKY Holdings, Inc. Identification and surveillance device, system and method for individual item level tracking

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6614392B2 (en) * 2001-12-07 2003-09-02 Delaware Capital Formation, Inc. Combination RFID and GPS functionality on intelligent label
US6951596B2 (en) * 2002-01-18 2005-10-04 Avery Dennison Corporation RFID label technique
DE10229542B4 (en) * 2002-07-01 2004-05-19 Infineon Technologies Ag the same electronic component having multilayer rewiring and methods for preparing
JP4430874B2 (en) * 2003-02-07 2010-03-10 株式会社ハネックス Communication device and closing systems
WO2005096380A1 (en) * 2004-04-02 2005-10-13 Semiconductor Energy Laboratory Co., Ltd. Semiconductor device and driving method of the same
US7500307B2 (en) * 2004-09-22 2009-03-10 Avery Dennison Corporation High-speed RFID circuit placement method
US20060181419A1 (en) * 2005-01-28 2006-08-17 Wha Yu Industrial Co., Ltd. RFID tag applicable to metallic environment
US7196626B2 (en) * 2005-01-28 2007-03-27 Wha Yu Industrial Co., Ltd. Radio frequency identification RFID tag
US20060202835A1 (en) * 2005-02-25 2006-09-14 Osborne Industries, Inc. Dual frequency identification device
US7623034B2 (en) * 2005-04-25 2009-11-24 Avery Dennison Corporation High-speed RFID circuit placement method and device
JP4801951B2 (en) * 2005-08-18 2011-10-26 富士通フロンテック株式会社 RFID tag
KR100659272B1 (en) * 2005-12-15 2006-12-12 삼성전자주식회사 Rfid tag capable of limiting over-voltage and method for controlling over-voltage thereof
US7555826B2 (en) 2005-12-22 2009-07-07 Avery Dennison Corporation Method of manufacturing RFID devices
US20070159337A1 (en) * 2006-01-12 2007-07-12 Sdgi Holdings, Inc. Modular RFID tag
EP2020642B1 (en) * 2006-03-31 2012-12-19 Hitachi Chemical Co., Ltd. Electronic tag
JP5057786B2 (en) * 2006-08-09 2012-10-24 富士通フロンテック株式会社 Tag
US9300032B2 (en) * 2007-10-31 2016-03-29 Tyco Fire & Security Gmbh RFID antenna system and method
US8633821B2 (en) 2007-12-03 2014-01-21 Avery Dennison Corporation Dual use RFID/EAS device
US8144018B1 (en) * 2008-03-06 2012-03-27 Sensormatic Electronics, LLC Combination electronic article surveillance/radio frequency identification antenna and method
KR101035054B1 (en) * 2008-12-24 2011-05-19 전자부품연구원 Tag antenna and manufacturing method thereof
CN103353948B (en) * 2013-07-26 2016-09-28 上海曜传信息科技有限公司 One kind rfid tag chip embedded formula and preparation method
US9317818B1 (en) 2015-01-13 2016-04-19 Seyed Amin Ghorashi Sarvestani System and method for using a hybrid single-pass electronic ticket
CN104881700A (en) * 2015-05-05 2015-09-02 宁波立芯射频股份有限公司 Book label with magnetic strip

Citations (97)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3196440A (en) * 1962-11-07 1965-07-20 Commercial Factors Ltd Radio control system for operating a distant electromechanical transducer door lock utilizing a capacity-sensitive circuit at the distant location and an operator-carried transceiver
US3299424A (en) * 1965-05-07 1967-01-17 Jorgen P Vinding Interrogator-responder identification system
US3427614A (en) * 1967-04-26 1969-02-11 Jorgen P Vinding Wireless and radioless (nonradiant) telemetry system for monitoring conditions
US3500373A (en) * 1966-05-06 1970-03-10 Nat Bank Of North America The Method and apparatus for article theft detection
US3755803A (en) * 1969-04-02 1973-08-28 Unisearch Ltd Electronic surveillance system
US3810147A (en) * 1971-12-30 1974-05-07 G Lichtblau Electronic security system
US3828337A (en) * 1973-08-20 1974-08-06 G Lichtblau Noise rejection circuitry
US4075632A (en) * 1974-08-27 1978-02-21 The United States Of America As Represented By The United States Department Of Energy Interrogation, and detection system
US4079360A (en) * 1974-07-26 1978-03-14 Sony Corporation Magnetic field sensing apparatus
US4160971A (en) * 1975-05-02 1979-07-10 National Research Development Corporation Transponders
US4209783A (en) * 1977-03-30 1980-06-24 Tokyo Shibaura Electric Co., Ltd. Object identification system
US4341189A (en) * 1979-06-04 1982-07-27 Nippon Soken, Inc. Knock detecting apparatus for combustion engines
US4388524A (en) * 1981-09-16 1983-06-14 Walton Charles A Electronic identification and recognition system with code changeable reactance
US4447781A (en) * 1981-10-13 1984-05-08 Honeywell Inc. Magnetoresistive transducer apparatus
US4476454A (en) * 1983-06-30 1984-10-09 International Business Machines Corporation New magnetoresistive materials
US4510490A (en) * 1982-04-29 1985-04-09 Allied Corporation Coded surveillance system having magnetomechanical marker
US4618861A (en) * 1985-03-20 1986-10-21 Cornell Research Foundation, Inc. Passive activity monitor for livestock
US4618822A (en) * 1984-04-18 1986-10-21 Position Orientation Systems, Ltd. Displacement sensing device utilizing adjustable tuned circuit
US4647917A (en) * 1984-03-26 1987-03-03 Allied Corporation Article control system having coded magnetomechanical marker
US4658252A (en) * 1984-08-13 1987-04-14 Gte Government Systems Corporation Encoder/decoder for card entry system
US4660025A (en) * 1984-11-26 1987-04-21 Sensormatic Electronics Corporation Article surveillance magnetic marker having an hysteresis loop with large Barkhausen discontinuities
US4670740A (en) * 1985-11-04 1987-06-02 Security Tag Systems, Inc. Portable, batteryless, frequency divider consisting of inductor and diode
US4673932A (en) * 1983-12-29 1987-06-16 Revlon, Inc. Rapid inventory data acquistion system
US4700179A (en) * 1982-04-12 1987-10-13 Ici Americas Inc. Crossed beam high frequency anti-theft system
US4745401A (en) * 1985-09-09 1988-05-17 Minnesota Mining And Manufacturing Company RF reactivatable marker for electronic article surveillance system
US4816389A (en) * 1984-07-13 1989-03-28 Institut Pasteur Probe for DNA and a process for the detection of "shigellae" and entero-invasive strains of Escherichia coli
US4835377A (en) * 1987-06-10 1989-05-30 Brown Richard R Programmer for identification system
US4853524A (en) * 1986-07-24 1989-08-01 Stanley Electric Co., Ltd. Optical identification card system
US4853705A (en) * 1988-05-11 1989-08-01 Amtech Technology Corporation Beam powered antenna
US4864158A (en) * 1988-01-28 1989-09-05 Amtech Corporation Rapid signal validity checking apparatus
US4940996A (en) * 1988-04-29 1990-07-10 Paton Anthony D Drop-on-demand printhead
US4967185A (en) * 1989-08-08 1990-10-30 Minnesota Mining And Manufacturing Company Multi-directionally responsive, dual-status, magnetic article surveillance marker having continuous keeper
US4999636A (en) * 1989-02-17 1991-03-12 Amtech Technology Corporation Range limiting system
US4999609A (en) * 1988-04-29 1991-03-12 Scientific Generics Limited Antipilferage tags having an acoustic resonator chamber
US5001458A (en) * 1986-08-14 1991-03-19 Tyren Carl Method of remote sensing of objects
US5001993A (en) * 1990-01-03 1991-03-26 Gramlow David E Stove for burning bio-mass pellets and grain
US5030807A (en) * 1990-01-16 1991-07-09 Amtech Corporation System for reading and writing data from and into remote tags
US5038130A (en) * 1990-11-06 1991-08-06 Santa Barbara Research Center System for sensing changes in a magnetic field
US5055786A (en) * 1987-08-18 1991-10-08 Fujitsu Limited Barber-pole magnetoresistive magnetic field sensor
US5055659A (en) * 1990-02-06 1991-10-08 Amtech Technology Corp. High speed system for reading and writing data from and into remote tags
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
US5083112A (en) * 1990-06-01 1992-01-21 Minnesota Mining And Manufacturing Company Multi-layer thin-film eas marker
US5111186A (en) * 1990-11-29 1992-05-05 Sensormatic Electronics Corporation LC-type electronic article surveillance tag with voltage dependent capacitor
US5153526A (en) * 1990-05-31 1992-10-06 Sony Corporation Numerical control type oscillator apparatus
US5204681A (en) * 1991-09-24 1993-04-20 Gordian Holding Corporation Radio frequency automatic identification system
US5218189A (en) * 1991-09-09 1993-06-08 Checkpoint Systems, Inc. Binary encoded multiple frequency rf indentification tag
US5235326A (en) * 1991-08-15 1993-08-10 Avid Corporation Multi-mode identification system
US5257009A (en) * 1991-08-26 1993-10-26 Sensormatic Electronics Corporation Reradiating EAS tag with voltage dependent capacitance to provide tag activation and deactivation
US5276431A (en) * 1992-04-29 1994-01-04 Checkpoint Systems, Inc. Security tag for use with article having inherent capacitance
US5313192A (en) * 1992-07-02 1994-05-17 Sensormatic Electronics Corp. Deactivatable/reactivatable magnetic marker having a step change in magnetic flux
US5317309A (en) * 1990-11-06 1994-05-31 Westinghouse Electric Corp. Dual mode electronic identification system
US5341118A (en) * 1991-02-08 1994-08-23 International Business Machines Corporation Multilayer magnetic structure wherein the magnitude of the structure magnetoresistance is a function of nonmagnetic layer thickness
US5353011A (en) * 1993-01-04 1994-10-04 Checkpoint Systems, Inc. Electronic article security system with digital signal processing and increased detection range
US5381137A (en) * 1992-10-26 1995-01-10 Motorola, Inc. RF tagging system and RF tags and method
US5392028A (en) * 1992-12-11 1995-02-21 Kobe Properties Limited Anti-theft protection systems responsive to bath resonance and magnetization
US5420569A (en) * 1991-01-04 1995-05-30 Scientific Generics Limited Remotely readable data storage devices and apparatus
US5440300A (en) * 1992-11-25 1995-08-08 Simmonds Precision Products, Inc. Smart structure with non-contact power and data interface
US5446447A (en) * 1994-02-16 1995-08-29 Motorola, Inc. RF tagging system including RF tags with variable frequency resonant circuits
US5450492A (en) * 1990-05-01 1995-09-12 Disys Corporation Transponder system with variable frequency transmission
US5485520A (en) * 1993-10-07 1996-01-16 Amtech Corporation Automatic real-time highway toll collection from moving vehicles
US5504485A (en) * 1994-07-21 1996-04-02 Amtech Corporation System for preventing reading of undesired RF signals
US5510795A (en) * 1994-11-10 1996-04-23 Amtech Corporation Single antenna location and direction finding system
US5517179A (en) * 1995-05-18 1996-05-14 Xlink Enterprises, Inc. Signal-powered frequency-dividing transponder
US5517195A (en) * 1994-09-14 1996-05-14 Sensormatic Electronics Corporation Dual frequency EAS tag with deactivation coil
US5521601A (en) * 1995-04-21 1996-05-28 International Business Machines Corporation Power-efficient technique for multiple tag discrimination
US5523749A (en) * 1991-04-03 1996-06-04 Integrated Silicon Design Pty. Ltd. Identification system for simultaneously interrogated labels
US5528222A (en) * 1994-09-09 1996-06-18 International Business Machines Corporation Radio frequency circuit and memory in thin flexible package
US5538803A (en) * 1994-11-23 1996-07-23 International Business Machines Corporation Multibit tag using Barkhausen effect
US5550547A (en) * 1994-09-12 1996-08-27 International Business Machines Corporation Multiple item radio frequency tag identification protocol
US5550536A (en) * 1994-08-17 1996-08-27 Texas Instruments Deutschland Gmbh Circuit frequency following technique transponder resonant
US5552778A (en) * 1994-11-23 1996-09-03 International Business Machines Corporation Multibit bimorph magnetic tags using acoustic or magnetic interrogation for identification of an object coupled thereto
US5552790A (en) * 1992-01-23 1996-09-03 Saab-Scania Combitech Aktiebolag Device for wireless transfer of information
US5554974A (en) * 1994-11-23 1996-09-10 International Business Machines Corporation Encodable tag with radio frequency readout
US5559507A (en) * 1991-05-31 1996-09-24 Avid Marketing, Inc. Signal transmission and tag reading circuit for an inductive reader
US5563583A (en) * 1994-11-23 1996-10-08 International Business Machines Corporation Multibit magnetic radio frequency tag using micromechanics
US5594228A (en) * 1988-08-25 1997-01-14 Symbol Technologies, Inc. Self-checkout, point-of-transaction system including deactivatable electro-optically coded surveillance tags
US5606323A (en) * 1995-08-31 1997-02-25 International Business Machines Corporation Diode modulator for radio frequency transponder
US5635693A (en) * 1995-02-02 1997-06-03 International Business Machines Corporation System and method for tracking vehicles in vehicle lots
US5673037A (en) * 1994-09-09 1997-09-30 International Business Machines Corporation System and method for radio frequency tag group select
US5729697A (en) * 1995-04-24 1998-03-17 International Business Machines Corporation Intelligent shopping cart
US5729201A (en) * 1995-06-29 1998-03-17 International Business Machines Corporation Identification tags using amorphous wire
US5729607A (en) * 1994-08-12 1998-03-17 Neosoft A.G. Non-linear digital communications system
US5736929A (en) * 1996-06-07 1998-04-07 International Business Machines Corporation System for concealed serialization utilizing a soft magnetic antitheft element
US5737710A (en) * 1995-11-07 1998-04-07 Amtech Corporation Automated vehicle parking system for a plurality of remote parking facilities
US5739754A (en) * 1996-07-29 1998-04-14 International Business Machines Corporation Circuit antitheft and disabling mechanism
US5745036A (en) * 1996-09-12 1998-04-28 Checkpoint Systems, Inc. Electronic article security system for store which uses intelligent security tags and transaction data
US5767789A (en) * 1995-08-31 1998-06-16 International Business Machines Corporation Communication channels through electrically conducting enclosures via frequency selective windows
US5771021A (en) * 1993-10-04 1998-06-23 Amtech Corporation Transponder employing modulated backscatter microstrip double patch antenna
US5777561A (en) * 1996-09-30 1998-07-07 International Business Machines Corporation Method of grouping RF transponders
US5786626A (en) * 1996-03-25 1998-07-28 Ibm Corporation Thin radio frequency transponder with leadframe antenna structure
US5801699A (en) * 1996-01-26 1998-09-01 International Business Machines Corporation Icon aggregation on a graphical user interface
US5812065A (en) * 1995-08-14 1998-09-22 International Business Machines Corporation Modulation of the resonant frequency of a circuit using an energy field
US5859587A (en) * 1996-09-26 1999-01-12 Sensormatic Electronics Corporation Data communication and electronic article surveillance tag
US5874902A (en) * 1996-07-29 1999-02-23 International Business Machines Corporation Radio frequency identification transponder with electronic circuit enabling/disabling capability
US5939984A (en) * 1997-12-31 1999-08-17 Intermec Ip Corp. Combination radio frequency transponder (RF Tag) and magnetic electronic article surveillance (EAS) material
US6268796B1 (en) * 1997-12-12 2001-07-31 Alfred Gnadinger Radio frequency identification transponder having integrated antenna
US6339385B1 (en) * 1997-08-20 2002-01-15 Micron Technology, Inc. Electronic communication devices, methods of forming electrical communication devices, and communication methods

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE469673B (en) * 1992-01-20 1993-08-16 Rso Corp Saett and apparatus at beroeringsfri avkaenning of items
US6130612A (en) 1997-01-05 2000-10-10 Intermec Ip Corp. Antenna for RF tag with a magnetoelastic resonant core
US5986562A (en) * 1998-09-11 1999-11-16 Brady Worldwide, Inc. RFID tag holder for non-RFID tag

Patent Citations (99)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3196440A (en) * 1962-11-07 1965-07-20 Commercial Factors Ltd Radio control system for operating a distant electromechanical transducer door lock utilizing a capacity-sensitive circuit at the distant location and an operator-carried transceiver
US3299424A (en) * 1965-05-07 1967-01-17 Jorgen P Vinding Interrogator-responder identification system
US3500373A (en) * 1966-05-06 1970-03-10 Nat Bank Of North America The Method and apparatus for article theft detection
US3427614A (en) * 1967-04-26 1969-02-11 Jorgen P Vinding Wireless and radioless (nonradiant) telemetry system for monitoring conditions
US3755803A (en) * 1969-04-02 1973-08-28 Unisearch Ltd Electronic surveillance system
US3810147A (en) * 1971-12-30 1974-05-07 G Lichtblau Electronic security system
US3828337A (en) * 1973-08-20 1974-08-06 G Lichtblau Noise rejection circuitry
US4079360A (en) * 1974-07-26 1978-03-14 Sony Corporation Magnetic field sensing apparatus
US4075632A (en) * 1974-08-27 1978-02-21 The United States Of America As Represented By The United States Department Of Energy Interrogation, and detection system
US4160971A (en) * 1975-05-02 1979-07-10 National Research Development Corporation Transponders
US4209783A (en) * 1977-03-30 1980-06-24 Tokyo Shibaura Electric Co., Ltd. Object identification system
US4465047A (en) * 1979-06-04 1984-08-14 Nippon Soken, Inc. Knock detecting apparatus for combustion engines
US4341189A (en) * 1979-06-04 1982-07-27 Nippon Soken, Inc. Knock detecting apparatus for combustion engines
US4388524A (en) * 1981-09-16 1983-06-14 Walton Charles A Electronic identification and recognition system with code changeable reactance
US4447781A (en) * 1981-10-13 1984-05-08 Honeywell Inc. Magnetoresistive transducer apparatus
US4700179A (en) * 1982-04-12 1987-10-13 Ici Americas Inc. Crossed beam high frequency anti-theft system
US4510490A (en) * 1982-04-29 1985-04-09 Allied Corporation Coded surveillance system having magnetomechanical marker
US4476454A (en) * 1983-06-30 1984-10-09 International Business Machines Corporation New magnetoresistive materials
US4673932A (en) * 1983-12-29 1987-06-16 Revlon, Inc. Rapid inventory data acquistion system
US4647917A (en) * 1984-03-26 1987-03-03 Allied Corporation Article control system having coded magnetomechanical marker
US4618822A (en) * 1984-04-18 1986-10-21 Position Orientation Systems, Ltd. Displacement sensing device utilizing adjustable tuned circuit
US4816389A (en) * 1984-07-13 1989-03-28 Institut Pasteur Probe for DNA and a process for the detection of "shigellae" and entero-invasive strains of Escherichia coli
US4658252A (en) * 1984-08-13 1987-04-14 Gte Government Systems Corporation Encoder/decoder for card entry system
US4660025A (en) * 1984-11-26 1987-04-21 Sensormatic Electronics Corporation Article surveillance magnetic marker having an hysteresis loop with large Barkhausen discontinuities
US4618861A (en) * 1985-03-20 1986-10-21 Cornell Research Foundation, Inc. Passive activity monitor for livestock
US4745401A (en) * 1985-09-09 1988-05-17 Minnesota Mining And Manufacturing Company RF reactivatable marker for electronic article surveillance system
US4670740A (en) * 1985-11-04 1987-06-02 Security Tag Systems, Inc. Portable, batteryless, frequency divider consisting of inductor and diode
US4853524A (en) * 1986-07-24 1989-08-01 Stanley Electric Co., Ltd. Optical identification card system
US5001458A (en) * 1986-08-14 1991-03-19 Tyren Carl Method of remote sensing of objects
US4835377A (en) * 1987-06-10 1989-05-30 Brown Richard R Programmer for identification system
US5055786A (en) * 1987-08-18 1991-10-08 Fujitsu Limited Barber-pole magnetoresistive magnetic field sensor
US4864158A (en) * 1988-01-28 1989-09-05 Amtech Corporation Rapid signal validity checking apparatus
US4999609A (en) * 1988-04-29 1991-03-12 Scientific Generics Limited Antipilferage tags having an acoustic resonator chamber
US4940996A (en) * 1988-04-29 1990-07-10 Paton Anthony D Drop-on-demand printhead
US4853705A (en) * 1988-05-11 1989-08-01 Amtech Technology Corporation Beam powered antenna
US5594228A (en) * 1988-08-25 1997-01-14 Symbol Technologies, Inc. Self-checkout, point-of-transaction system including deactivatable electro-optically coded surveillance tags
US4999636A (en) * 1989-02-17 1991-03-12 Amtech Technology Corporation Range limiting system
US4967185A (en) * 1989-08-08 1990-10-30 Minnesota Mining And Manufacturing Company Multi-directionally responsive, dual-status, magnetic article surveillance marker having continuous keeper
US5001993A (en) * 1990-01-03 1991-03-26 Gramlow David E Stove for burning bio-mass pellets and grain
US5030807A (en) * 1990-01-16 1991-07-09 Amtech Corporation System for reading and writing data from and into remote tags
US5055659A (en) * 1990-02-06 1991-10-08 Amtech Technology Corp. High speed system for reading and writing data from and into remote tags
US5450492A (en) * 1990-05-01 1995-09-12 Disys Corporation Transponder system with variable frequency transmission
US5153526A (en) * 1990-05-31 1992-10-06 Sony Corporation Numerical control type oscillator apparatus
US5083112A (en) * 1990-06-01 1992-01-21 Minnesota Mining And Manufacturing Company Multi-layer thin-film eas marker
US5038130A (en) * 1990-11-06 1991-08-06 Santa Barbara Research Center System for sensing changes in a magnetic field
US5317309A (en) * 1990-11-06 1994-05-31 Westinghouse Electric Corp. Dual mode electronic identification system
US5111186A (en) * 1990-11-29 1992-05-05 Sensormatic Electronics Corporation LC-type electronic article surveillance tag with voltage dependent capacitor
US5420569A (en) * 1991-01-04 1995-05-30 Scientific Generics Limited Remotely readable data storage devices and apparatus
US5341118A (en) * 1991-02-08 1994-08-23 International Business Machines Corporation Multilayer magnetic structure wherein the magnitude of the structure magnetoresistance is a function of nonmagnetic layer thickness
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
US5523749A (en) * 1991-04-03 1996-06-04 Integrated Silicon Design Pty. Ltd. Identification system for simultaneously interrogated labels
US5559507A (en) * 1991-05-31 1996-09-24 Avid Marketing, Inc. Signal transmission and tag reading circuit for an inductive reader
US5235326A (en) * 1991-08-15 1993-08-10 Avid Corporation Multi-mode identification system
US5257009A (en) * 1991-08-26 1993-10-26 Sensormatic Electronics Corporation Reradiating EAS tag with voltage dependent capacitance to provide tag activation and deactivation
US5218189A (en) * 1991-09-09 1993-06-08 Checkpoint Systems, Inc. Binary encoded multiple frequency rf indentification tag
US5204681A (en) * 1991-09-24 1993-04-20 Gordian Holding Corporation Radio frequency automatic identification system
US5552790A (en) * 1992-01-23 1996-09-03 Saab-Scania Combitech Aktiebolag Device for wireless transfer of information
US5276431A (en) * 1992-04-29 1994-01-04 Checkpoint Systems, Inc. Security tag for use with article having inherent capacitance
US5313192A (en) * 1992-07-02 1994-05-17 Sensormatic Electronics Corp. Deactivatable/reactivatable magnetic marker having a step change in magnetic flux
US5381137A (en) * 1992-10-26 1995-01-10 Motorola, Inc. RF tagging system and RF tags and method
US5440300A (en) * 1992-11-25 1995-08-08 Simmonds Precision Products, Inc. Smart structure with non-contact power and data interface
US5392028A (en) * 1992-12-11 1995-02-21 Kobe Properties Limited Anti-theft protection systems responsive to bath resonance and magnetization
US5353011A (en) * 1993-01-04 1994-10-04 Checkpoint Systems, Inc. Electronic article security system with digital signal processing and increased detection range
US5771021A (en) * 1993-10-04 1998-06-23 Amtech Corporation Transponder employing modulated backscatter microstrip double patch antenna
US5485520A (en) * 1993-10-07 1996-01-16 Amtech Corporation Automatic real-time highway toll collection from moving vehicles
US5446447A (en) * 1994-02-16 1995-08-29 Motorola, Inc. RF tagging system including RF tags with variable frequency resonant circuits
US5504485A (en) * 1994-07-21 1996-04-02 Amtech Corporation System for preventing reading of undesired RF signals
US5729607A (en) * 1994-08-12 1998-03-17 Neosoft A.G. Non-linear digital communications system
US5550536A (en) * 1994-08-17 1996-08-27 Texas Instruments Deutschland Gmbh Circuit frequency following technique transponder resonant
US5528222A (en) * 1994-09-09 1996-06-18 International Business Machines Corporation Radio frequency circuit and memory in thin flexible package
US5673037A (en) * 1994-09-09 1997-09-30 International Business Machines Corporation System and method for radio frequency tag group select
US5550547A (en) * 1994-09-12 1996-08-27 International Business Machines Corporation Multiple item radio frequency tag identification protocol
US5517195A (en) * 1994-09-14 1996-05-14 Sensormatic Electronics Corporation Dual frequency EAS tag with deactivation coil
US5510795A (en) * 1994-11-10 1996-04-23 Amtech Corporation Single antenna location and direction finding system
US5552778A (en) * 1994-11-23 1996-09-03 International Business Machines Corporation Multibit bimorph magnetic tags using acoustic or magnetic interrogation for identification of an object coupled thereto
US5554974A (en) * 1994-11-23 1996-09-10 International Business Machines Corporation Encodable tag with radio frequency readout
US5563583A (en) * 1994-11-23 1996-10-08 International Business Machines Corporation Multibit magnetic radio frequency tag using micromechanics
US5538803A (en) * 1994-11-23 1996-07-23 International Business Machines Corporation Multibit tag using Barkhausen effect
US5635693A (en) * 1995-02-02 1997-06-03 International Business Machines Corporation System and method for tracking vehicles in vehicle lots
US5521601A (en) * 1995-04-21 1996-05-28 International Business Machines Corporation Power-efficient technique for multiple tag discrimination
US5729697A (en) * 1995-04-24 1998-03-17 International Business Machines Corporation Intelligent shopping cart
US5517179A (en) * 1995-05-18 1996-05-14 Xlink Enterprises, Inc. Signal-powered frequency-dividing transponder
US5729201A (en) * 1995-06-29 1998-03-17 International Business Machines Corporation Identification tags using amorphous wire
US5812065A (en) * 1995-08-14 1998-09-22 International Business Machines Corporation Modulation of the resonant frequency of a circuit using an energy field
US6535108B1 (en) * 1995-08-14 2003-03-18 Intermec Ip Corp. Modulation of the resonant frequency of a circuit using an energy field
US5767789A (en) * 1995-08-31 1998-06-16 International Business Machines Corporation Communication channels through electrically conducting enclosures via frequency selective windows
US5606323A (en) * 1995-08-31 1997-02-25 International Business Machines Corporation Diode modulator for radio frequency transponder
US5737710A (en) * 1995-11-07 1998-04-07 Amtech Corporation Automated vehicle parking system for a plurality of remote parking facilities
US5801699A (en) * 1996-01-26 1998-09-01 International Business Machines Corporation Icon aggregation on a graphical user interface
US5786626A (en) * 1996-03-25 1998-07-28 Ibm Corporation Thin radio frequency transponder with leadframe antenna structure
US5736929A (en) * 1996-06-07 1998-04-07 International Business Machines Corporation System for concealed serialization utilizing a soft magnetic antitheft element
US5739754A (en) * 1996-07-29 1998-04-14 International Business Machines Corporation Circuit antitheft and disabling mechanism
US5874902A (en) * 1996-07-29 1999-02-23 International Business Machines Corporation Radio frequency identification transponder with electronic circuit enabling/disabling capability
US5745036A (en) * 1996-09-12 1998-04-28 Checkpoint Systems, Inc. Electronic article security system for store which uses intelligent security tags and transaction data
US5859587A (en) * 1996-09-26 1999-01-12 Sensormatic Electronics Corporation Data communication and electronic article surveillance tag
US5777561A (en) * 1996-09-30 1998-07-07 International Business Machines Corporation Method of grouping RF transponders
US6339385B1 (en) * 1997-08-20 2002-01-15 Micron Technology, Inc. Electronic communication devices, methods of forming electrical communication devices, and communication methods
US6268796B1 (en) * 1997-12-12 2001-07-31 Alfred Gnadinger Radio frequency identification transponder having integrated antenna
US5939984A (en) * 1997-12-31 1999-08-17 Intermec Ip Corp. Combination radio frequency transponder (RF Tag) and magnetic electronic article surveillance (EAS) material

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7482934B2 (en) * 2005-01-17 2009-01-27 Fujitsu Limited Communication device and communication method
US20080018428A1 (en) * 2005-01-17 2008-01-24 Fujitsu Limited Communication device and communication method
US7323977B2 (en) * 2005-03-15 2008-01-29 Intermec Ip Corp. Tunable RFID tag for global applications
US20060220869A1 (en) * 2005-03-15 2006-10-05 Intermec Ip Corp. Tunable RFID tag for global applications
US20070159336A1 (en) * 2006-01-06 2007-07-12 Sdgi Holdings, Inc Coiled RFID tag
US7705733B2 (en) 2006-01-06 2010-04-27 Warsaw Orthopedic, Inc. Coiled RFID tag
WO2007144036A1 (en) * 2006-06-13 2007-12-21 Kopf Ag Theft protection unit for a photovoltaic unit
EP1868248A1 (en) * 2006-06-13 2007-12-19 Kopf AG Anti-theft device for a photovoltaic installation
US8179261B2 (en) 2006-06-20 2012-05-15 AbsoluteSKY Holdings, Inc. Identification and surveillance device, system and method for individual item level tracking
US20100001079A1 (en) * 2008-02-27 2010-01-07 Tagsys Sas Combined EAS/RFID tag
US8056814B2 (en) * 2008-02-27 2011-11-15 Tagsys Sas Combined EAS/RFID tag

Also Published As

Publication number Publication date
US20050162278A1 (en) 2005-07-28
US20050001725A1 (en) 2005-01-06
US7084770B2 (en) 2006-08-01
US7002475B2 (en) 2006-02-21

Similar Documents

Publication Publication Date Title
CN1293507C (en) Application of radio frequency recognition system
CA2217762C (en) Spatial magnetic interrogation
US7737853B2 (en) System and method for disabling RFID tags
AU738644B2 (en) Deactivateable resonant circuit
CA2705190C (en) Combination eas and rfid label or tag with controllable read range using a hybrid rfid antenna
JP3909607B2 (en) Electronic tag that is remotely powered exciter / reader and method
US6492192B1 (en) Method of making a Schottky diode in an integrated circuit
KR101148268B1 (en) Rfid tag wide bandwidth logarithmic spiral antenna method and system
CN1227627C (en) Apparatus for magnetically decoupling RF tag
US7298343B2 (en) RFID tag with enhanced readability
US6259408B1 (en) RFID transponders with paste antennas and flip-chip attachment
US8072332B2 (en) RFID tags with EAS deactivation ability
US7336243B2 (en) Radio frequency identification tag
US8111138B2 (en) Radio tag and system
DE69909301T2 (en) Using a high-frequency-identification system
EP0821406A2 (en) Method of wire bonding an integrated circuit to an ultra-flexible substrate
US7417599B2 (en) Multi-loop antenna for radio frequency identification (RFID) communication
US7161542B2 (en) Antenna for RFID
US6970141B2 (en) Phase compensated field-cancelling nested loop antenna
US6243013B1 (en) Cascaded DC voltages of multiple antenna RF tag front-end circuits
EP0215605A2 (en) RF reactivatable marker
US6025725A (en) Electrically active resonant structures for wireless monitoring and control
US6496113B2 (en) Radio frequency identification tag on a single layer substrate
AU2005307755B2 (en) Combination EAS and RFID label or tag with controllable read range
US6249227B1 (en) RFID integrated in electronic assets

Legal Events

Date Code Title Description
STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION