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WO1998038792A1 - Systeme magnetoresistif a balayage - Google Patents

Systeme magnetoresistif a balayage Download PDF

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Publication number
WO1998038792A1
WO1998038792A1 PCT/US1998/003989 US9803989W WO9838792A1 WO 1998038792 A1 WO1998038792 A1 WO 1998038792A1 US 9803989 W US9803989 W US 9803989W WO 9838792 A1 WO9838792 A1 WO 9838792A1
Authority
WO
WIPO (PCT)
Prior art keywords
sensor array
data
sensor
processor
sensors
Prior art date
Application number
PCT/US1998/003989
Other languages
English (en)
Inventor
J. M. Henson
S. R. Fuelling
Original Assignee
University And Community College System Of Nevada
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by University And Community College System Of Nevada filed Critical University And Community College System Of Nevada
Priority to AU63438/98A priority Critical patent/AU6343898A/en
Publication of WO1998038792A1 publication Critical patent/WO1998038792A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B82—NANOTECHNOLOGY
    • B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
    • B82Y25/00—Nanomagnetism, e.g. magnetoimpedance, anisotropic magnetoresistance, giant magnetoresistance or tunneling magnetoresistance
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
    • G07D7/00—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
    • G07D7/04—Testing magnetic properties of the materials thereof, e.g. by detection of magnetic imprint
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R33/00—Arrangements or instruments for measuring magnetic variables
    • G01R33/02—Measuring direction or magnitude of magnetic fields or magnetic flux
    • G01R33/06—Measuring direction or magnitude of magnetic fields or magnetic flux using galvano-magnetic devices
    • G01R33/09—Magnetoresistive devices
    • G01R33/093—Magnetoresistive devices using multilayer structures, e.g. giant magnetoresistance sensors
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/08—Methods or arrangements for sensing record carriers, e.g. for reading patterns by means detecting the change of an electrostatic or magnetic field, e.g. by detecting change of capacitance between electrodes
    • G06K7/082—Methods or arrangements for sensing record carriers, e.g. for reading patterns by means detecting the change of an electrostatic or magnetic field, e.g. by detecting change of capacitance between electrodes using inductive or magnetic sensors
    • G06K7/083—Methods or arrangements for sensing record carriers, e.g. for reading patterns by means detecting the change of an electrostatic or magnetic field, e.g. by detecting change of capacitance between electrodes using inductive or magnetic sensors inductive
    • G06K7/084—Methods or arrangements for sensing record carriers, e.g. for reading patterns by means detecting the change of an electrostatic or magnetic field, e.g. by detecting change of capacitance between electrodes using inductive or magnetic sensors inductive sensing magnetic material by relative movement detecting flux changes without altering its magnetised state
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
    • G07D7/00—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
    • G07D7/20—Testing patterns thereon
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/127—Structure or manufacture of heads, e.g. inductive
    • G11B5/33—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only
    • G11B5/39—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only using magneto-resistive devices or effects
    • G11B5/3903—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only using magneto-resistive devices or effects using magnetic thin film layers or their effects, the films being part of integrated structures
    • G11B5/3906—Details related to the use of magnetic thin film layers or to their effects
    • G11B5/3945—Heads comprising more than one sensitive element
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/00127—Connection or combination of a still picture apparatus with another apparatus, e.g. for storage, processing or transmission of still picture signals or of information associated with a still picture
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/00795—Reading arrangements
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/127—Structure or manufacture of heads, e.g. inductive
    • G11B5/33—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only
    • G11B5/39—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only using magneto-resistive devices or effects
    • G11B5/3903—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only using magneto-resistive devices or effects using magnetic thin film layers or their effects, the films being part of integrated structures
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
    • G11B5/49—Fixed mounting or arrangements, e.g. one head per track
    • G11B5/4969—Details for track selection or addressing
    • G11B5/4992—Circuits

Definitions

  • This invention relates to an array and system for scanning and analyzing magnetic
  • this invention relates to an array and system that is capable of
  • Magnetoresistive sensors are well known in the art for measuring or detecting
  • magnetoresistive sensors may be proportional to the intensity of the applied magnetic fields.
  • Magnetoresistive sensors have been adapted for use in a variety of applications. For
  • FIGS. 1 A and IB illustrate the
  • Curve 22 may then be compared to a standard curve to determine the
  • dimensional "magnetic image" can be generated for verifying the authenticity of a bill.
  • Figure 2 A is an optical image of a zero on a 1997 U.S. $100 bill taken with a charge coupled
  • Figure 2B is a two-dimensional magnetic image
  • Figure 2C is a two-
  • two-dimensional magnetic images are capable of generating optical
  • One-dimensional scanning systems are also more
  • Two-dimensional magnetoresistive scanning systems may also be utilized in other situations
  • Two-dimensional magnetoresistive scanning systems may be used to efficiently scan the letters and figures on the page to
  • a magnetoresistive scanning system can also be used to store and read data. Data can be
  • a scanning system can then read the data from the
  • disk drives and tape cassettes are vulnerable to strong magnetic fields that can erase
  • magnetoresistive scanning systems only rely upon the
  • inexpensive media such as paper or plastic
  • magnetoresistive scanners offer significant advantages.
  • Magnetoresistive scanners tend to be highly robust and durable. Unlike optical scanners,
  • magnetoresistive scanners are not subject to contamination from dust, oils, and other
  • Magnetoresistive scanners also do not sense extraneous marks or optical
  • magnetoresistive scanners can produce
  • sensors are positioned in line with the direction of motion of the sensors relative to a bill;
  • the device utilizes a magnetoresistive element array with
  • the array is not intended to scan an area
  • the distance between the sensors is at least twice the width of a sensor; therefore, a
  • read heads with a plurality of sensor elements.
  • the elements are
  • inductive sensors cannot be placed close to each other because of interference, cross coupling,
  • a sensor array provides data to a processor for performing various functions.
  • the scanning system may read data and programs by scanning magnetic fields on an object.
  • the present invention comprises a magnetoresistive sensor array.
  • the sensor array is a magnetoresistive sensor array.
  • substrate and sensors are formed by methods that are well known in the art. In the preferred embodiment
  • the sensors are very small providing a high linear density with small distances
  • the sensor array may be designed in many different configurations.
  • present invention may also include a flux guide for directing magnetic fields to a sensor.
  • sensor array may also comprise amplifying and multiplexing circuitry for conditioning the
  • the amplifying and multiplexing circuit may receive impute
  • the present invention also comprises a magnetoresistive scanning system for scanning
  • the scanning system comprises at least one magnetoresistive sensor
  • the magnet is provided for magnetizing
  • the processor is adapted to
  • the processor may also communicate with other devices for performing various functions
  • the currency object may be a bill
  • the currency object is introduced into the system of the present invention and the sensor array scans data from the object.
  • the processor then analyzes the data,
  • the system is also capable of
  • Figure 1A is substantially a schematic representation of a magnetic material bearing
  • Figure IB is substantially a magnetic curve of the bill shown in Figure 1 A of a type
  • Figure 2A is a magnified optical image of a zero from a 1997 U.S. $100.00 bill.
  • Figure 2B is substantially a two-dimensional magnetic image of the zero shown in
  • Figure 2 A that may be produced by the present invention.
  • Figure 3 is substantially a top schematic view of one embodiment of the sensor array
  • Figure 4A is substantially a front schematic view of another embodiment of the sensor
  • array of the present invention that utilizes differential sensors and a permanent magnet.
  • Figure 4B is substantially a cross sectional schematic view of the embodiment in
  • Figure 4C is substantially an isometric schematic view of a differential sensor
  • Figure 5 is substantially a cross sectional schematic view of an another sensor array of
  • Figure 6 is substantially a schematic view of a multiplexing circuit in use with a
  • Figure 7 is substantially a side schematic view of a scanning system of the present
  • Figure 8 is substantially a block schematic diagram of a scanning system of the present invention.
  • the present invention comprises a magnetoresistive sensor array
  • Sensor array 30 comprises a plurality of
  • magnetoresistive sensors 32 attached to a substrate 34. Sensors 32 and substrate 34 are
  • Sensor array 30 also comprises conductive input connectors 36 for supplying
  • sensors 32 and substrate 34 are formed using
  • the individual magnetoresistive sensors 32 may comprise several layers that are deposited
  • These films may comprise the actual magnetoresistive film, which may be NiFe
  • a magnetically hard layer may be deposited (which is essential a permanent magnet)
  • Bias may be needed to bring the output signal of the
  • Electrical connectors 36 and 38 may be made out
  • substrate 34 which may comprise
  • Additional shielding layers may be deposited to limit the sensitivity of the magnetoresistive film to a small region.
  • sensors 32 are deposited on substrate 34, the substrate is cut by a stylus and
  • the finished assembly can be tested for
  • the assembly may
  • the device may undergo a final functionality test.
  • magnetoresistive sensor arrays with very small sensors and small sensor separations. Similar
  • Sensors 32 may be placed on substrate 34 in sufficient densities to achieve high
  • the linear density of sensors 32 is preferably at least one sensor per millimeter.
  • sensors is preferably less than ten microns. Small sensor separations such as this cannot be
  • Sensor array 30 may be any length required to meet the needs of a particular application. In bill validation applications, sensor array 30 is substantially the width of a bill.
  • the array need not be
  • the resolution of array 30 is defined as the ability of the array to distinguish between closely spaced small areas of magnetic ink on an object in both the x and y directions.
  • the resolution in the direction of scan depends on the width of the sensor 32 the width of the flux
  • direction perpendicular to the scan depends on the length of sensor 32 as well as the distance between sensors. Decreasing length and separation enhances resolution.
  • Figure 4 A and 4B disclose an alternative sensor array configuration 50 in which pairs
  • Upper sensors 52 and lower sensors 54 are used in a differential configuration.
  • Upper sensors 52 and lower sensors 54 are used in a differential configuration.
  • a permanent magnet or electromagnet 60 may be provided in close relative
  • the entire array may be encased in a protective cover 62.
  • the differential configuration allows for the reduction of noise caused by ambient
  • Lower sensors 54 sense magnetic fields from object 58. However, in this
  • the additional distance from the object of upper sensors 52 substantially weakens the magnetic fields from the object.
  • a differential circuit is used in the
  • the present invention comprises a sensor array 70 that is adapted
  • Magnetic flux guides are well known in the art and many different configurations may be used to achieve
  • flux guide 72 and sensors 74 and 76 are integrally formed on substrate 78 using integrated circuit manufacturing
  • Sensors 74 and 76 are provided in a differential configuration to provide a
  • Figure 6 discloses an amplifying and/or multiplexing circuit that may be used with the
  • Sensor array 90 comprises a plurality of sensors 92.
  • differential sensor pairs are used to produce differential
  • the circuit 96 amplifies sensor output signals and multiplexes the signals for
  • Circuit 96 may also receive input signals, such as clock signals,
  • circuit 96 are shown as separate elements, it is possible to integrate the two elements into a
  • sensor array 90 with a processor or other device.
  • the present invention comprises a scanning system generally
  • Scanning system 118 comprises sensor arrays 110, processor 112, transport device 114, and magnet 116.
  • Sensor arrays 110 may be any of the
  • Transport device 114 is provided to produce relative motion between a
  • Magnet 116 is provided to magnetize magnetic material on object 58 so that the magnetic material produces detectable
  • magnet 116 The shape and orientation of magnet 116 may be altered and still achieve the
  • processor 112 may be adapted to perform a number of functions that are related to the function of system 118. For example,
  • processor 112 may analyze and store data transmitted from array 110.
  • Tensioning devices 120 may analyze and store data transmitted from array 110.
  • Scanning system 118 allows object 58 to be used as a read only memory device.
  • magnetic material is deposited on object 58 in a predetermined two-
  • object 58 is capable of permanently storing data. As object 58 passes between
  • the polarity of the magnetic material is adjusted to a predetermined orientation.
  • Sensor array 110 is then able to read the two-dimensional pattern of the material.
  • Scanning system 118 may also comprise any number of other sensors and devices.
  • system 118 may comprise a photodiode array or charge couple device array
  • currency validation photodiodes and a light source may
  • Object 58 may be a preprogrammed read only
  • untrained operator may easily and efficiently reprogram or add data to system 118. This may be especially advantageous to currency validators that must be reprogrammed when new currencies are issued.
  • system 118 may comprise a processor 130 that is operatively connected to transport mechanism 114, sensor array 110, other sensor 148, memory 140, and
  • ADC analog to digital converter
  • comparator 138 comparator 138.
  • Processor 130 is capable of controlling the scanning process as well as performing other tasks associated with the scanning
  • Processor 130 controls transport mechanism 114 so that object 58 and sensor
  • Transport mechanism 114 may also be made to reject object 58.
  • Processor 130 may communicate with sensor array 110,
  • the sensor array scans data from object 134, it multiplexes the data and transmits
  • ADC 138 may convert the multiplexed data to serial eight bit data and
  • memory device 140 may be any of a large number of devices that are well known in
  • Alternate sensor 148 may be provided for scanning object 58 for a type of data not
  • the data may be transmitted to ADC 138 for conversion to serial eight bit data.
  • Analysis software and data 144 may be provided to processor 130 by erasable
  • EPROM programmable read only memory
  • a communication network may be provided for loading software remotely or object
  • 58 may be used as a read only memory as discussed above.
  • Analysis software may comprise a large number of methods that have been devised in
  • analysis software may
  • Templates may be based on known
  • System 118 may be used to analyze the entire surface of object 58 or, because it is
  • Processor 146 may also be adapted to communicate with device 146.
  • Device 146 may
  • device 146 may be any device that is relevant to the operation of system 118.
  • device 146 may
  • a display device such as a monitor or printer, for displaying magnetic images.
  • a monitor or printer for displaying magnetic images.
  • the present invention comprises:
  • a magnetoresistive sensor array that is capable of efficiently scanning
  • a system that may be reprogrammed by scanning the pattern and intensities of magnetic fields on an object
  • the number and type of magnetoresistive sensors comprising an array may be
  • the shapes, sizes, and arrangements of the magnetoresistive sensors may be any shape, sizes, and arrangements of the magnetoresistive sensors.
  • the shape, number, and configuration of the magnetic flux guides may be any shape, number, and configuration of the magnetic flux guides.
  • sampling rate of each sensor may be varied independently or in unison

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Nanotechnology (AREA)
  • Manufacturing & Machinery (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Artificial Intelligence (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Inspection Of Paper Currency And Valuable Securities (AREA)

Abstract

Cette invention se rapporte à un système (118) et à un ensemble magnétorésistif (110) à balayage destinés au balayage de champs magnétiques à la surface d'un objet (58). Un ensemble de détecteurs (110) comporte une pluralité de détecteurs à magnétorésistance indépendants, maintenus pour former une structure préétablie. L'invention se rapporte à plusieurs structures d'ensembles de détecteurs qui sont capables de générer des données bidimensionnelles des champs magnétiques sur un objet. Ledit système comprend également un organe de traitement capable d'analyser et de manipuler les données, et d'effectuer d'autres fonctions associées. Les systèmes magnétorésistifs de la présente invention peuvent notamment être utilisés dans des dispositifs de validation de monnaie, d'exploration de documents et dans des mémoires mortes.
PCT/US1998/003989 1997-02-28 1998-02-27 Systeme magnetoresistif a balayage WO1998038792A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU63438/98A AU6343898A (en) 1997-02-28 1998-02-27 Magnetoresistive scanning system

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US3854797P 1997-02-28 1997-02-28
US60/038,547 1997-02-28

Publications (1)

Publication Number Publication Date
WO1998038792A1 true WO1998038792A1 (fr) 1998-09-03

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Application Number Title Priority Date Filing Date
PCT/US1998/003989 WO1998038792A1 (fr) 1997-02-28 1998-02-27 Systeme magnetoresistif a balayage

Country Status (2)

Country Link
AU (1) AU6343898A (fr)
WO (1) WO1998038792A1 (fr)

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005036194A3 (fr) * 2003-10-08 2005-06-09 Centre Nat Etd Spatiales Sonde de mesure d'un champ magnetique
EP1672594A1 (fr) * 2004-12-14 2006-06-21 Laurel Precision Machines Co., Ltd. Rayonnage muni de casiers de picking destiné à la préparation automatisée des commandes
EP1856669A1 (fr) * 2005-02-28 2007-11-21 Giesecke & Devrient GmbH Procede et dispositif pour mesurer des proprietes magnetiques d'un document
WO2009156697A1 (fr) * 2008-06-27 2009-12-30 Centre National D'etudes Spatiales Dispositif et procédé de mesure de champ magnétique.
DE102008061507A1 (de) * 2008-12-10 2010-06-17 Giesecke & Devrient Gmbh Magnetsensor zur Prüfung von Wertdokumenten
EP2342695A4 (fr) * 2008-09-11 2012-03-14 Toshiba Int Corp Système de détection magnétorésistant et procédé pour la détection d images magnétiques de billets de banque
CN102576477A (zh) * 2009-09-01 2012-07-11 德国捷德有限公司 有价证券处理方法和设备
WO2014106534A1 (fr) * 2013-01-02 2014-07-10 Meas Deutschland Gmbh Dispositif de mesure des propriétés magnétiques de l'environnement du dispositif de mesure
CN103926543A (zh) * 2014-04-14 2014-07-16 无锡乐尔科技有限公司 基于磁电阻技术的磁头
JP2015064309A (ja) * 2013-09-26 2015-04-09 セイコーＮｐｃ株式会社 多角柱磁石を用いた磁気センサ
EP2927882A1 (fr) * 2014-03-13 2015-10-07 Kabushiki Kaisha Toshiba Capteur magnétique, dispositif d'inspection magnétique et appareil de traitement de feuille
CN105562435A (zh) * 2014-10-31 2016-05-11 科克斯技术有限及两合公司 机架更换系统、更换车和用于机架更换系统的转辙器以及包括轧制组件和机架更换系统的轧制设备
CN105654608A (zh) * 2014-11-10 2016-06-08 山东新北洋信息技术股份有限公司 纸币处理方法和装置
EP3133561A4 (fr) * 2014-04-18 2017-12-06 Multidimension Technology Co., Ltd. Puce de capteur de reconnaissance d'image magnétique dans le plan à faible hauteur de vol
DE102016111199A1 (de) 2016-06-20 2017-12-21 Noris Automation Gmbh Verfahren einer Erfassung einer räumlichen Magnetfeldverteilung von statischen und dynamischen Magnetfeldern und Magnetfeldsensoranordnung
DE102016111200A1 (de) 2016-06-20 2017-12-21 Noris Automation Gmbh Verfahren und Vorrichtung zur berührungslosen funktionalen Überprüfung elektronischer Bauelemente in Schaltungsanordnungen mit örtlicher Fehlerlokalisierung
JP2019184382A (ja) * 2018-04-09 2019-10-24 キヤノン電子株式会社 磁気識別装置
WO2020149375A1 (fr) * 2019-01-17 2020-07-23 キヤノン電子株式会社 Capteur d'identification magnétique

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0342062A2 (fr) * 1988-05-12 1989-11-15 Fujitsu Limited Reconnaissance de modèles imprimés avec de l'encre magnétisable
US4973851A (en) * 1989-04-07 1990-11-27 Rowe International, Inc. Currency validator
US4988850A (en) * 1988-05-25 1991-01-29 Murata Mfg. Co., Ltd. Magnetoresistance element array
JPH03179214A (ja) * 1989-12-07 1991-08-05 Fuji Electric Co Ltd アレイセンサの出力方式
JPH0498592A (ja) * 1990-08-16 1992-03-31 Fuji Electric Co Ltd 紙幣鑑別装置
US5358088A (en) * 1992-11-25 1994-10-25 Mars Incorporated Horizontal magnetoresistive head apparatus and method for detecting magnetic data
US5452163A (en) * 1993-12-23 1995-09-19 International Business Machines Corporation Multilayer magnetoresistive sensor
US5495929A (en) * 1994-03-16 1996-03-05 Batalianets; Valeri V. Apparatus and method for validation of bank notes and other valuable documents
US5585775A (en) * 1993-04-21 1996-12-17 Nec Corporation Integrated magnetoresistive sensor

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0342062A2 (fr) * 1988-05-12 1989-11-15 Fujitsu Limited Reconnaissance de modèles imprimés avec de l'encre magnétisable
US4988850A (en) * 1988-05-25 1991-01-29 Murata Mfg. Co., Ltd. Magnetoresistance element array
US4973851A (en) * 1989-04-07 1990-11-27 Rowe International, Inc. Currency validator
JPH03179214A (ja) * 1989-12-07 1991-08-05 Fuji Electric Co Ltd アレイセンサの出力方式
JPH0498592A (ja) * 1990-08-16 1992-03-31 Fuji Electric Co Ltd 紙幣鑑別装置
US5358088A (en) * 1992-11-25 1994-10-25 Mars Incorporated Horizontal magnetoresistive head apparatus and method for detecting magnetic data
US5585775A (en) * 1993-04-21 1996-12-17 Nec Corporation Integrated magnetoresistive sensor
US5452163A (en) * 1993-12-23 1995-09-19 International Business Machines Corporation Multilayer magnetoresistive sensor
US5495929A (en) * 1994-03-16 1996-03-05 Batalianets; Valeri V. Apparatus and method for validation of bank notes and other valuable documents

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
OKABE HIROTAKA ET AL: "Grooved Bar-Code Pattern Recognition System with Magnetoresistive Sensor", IEEE TRANSACTIONS ON MAGNETICS, vol. 26, no. 5, September 1990 (1990-09-01), pages 1575 - 1577, XP002912623 *
SO M.H. ET AL: "Magnetic Domain Imaging in Coated Silicon-Iron Using Magnetoresistive Sensors", IEEE TRANSACTIONS ON MAGNETICS, vol. 31, no. 6, November 1995 (1995-11-01), GB, pages 3370 - 3372, XP002912622 *

Cited By (36)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7411391B2 (en) 2003-10-08 2008-08-12 Centre National D'etudes Spatiales Magnetic-field-measuring probe
WO2005036194A3 (fr) * 2003-10-08 2005-06-09 Centre Nat Etd Spatiales Sonde de mesure d'un champ magnetique
EP1672594A1 (fr) * 2004-12-14 2006-06-21 Laurel Precision Machines Co., Ltd. Rayonnage muni de casiers de picking destiné à la préparation automatisée des commandes
US7481428B2 (en) 2004-12-14 2009-01-27 Laurel Precision Machines Co., Ltd. Paper leaf detecting device
EP1856669A1 (fr) * 2005-02-28 2007-11-21 Giesecke & Devrient GmbH Procede et dispositif pour mesurer des proprietes magnetiques d'un document
WO2009156697A1 (fr) * 2008-06-27 2009-12-30 Centre National D'etudes Spatiales Dispositif et procédé de mesure de champ magnétique.
FR2933202A1 (fr) * 2008-06-27 2010-01-01 Centre Nat Etd Spatiales Dispositif et procede de mesure de champ magnetique
EP2342695A4 (fr) * 2008-09-11 2012-03-14 Toshiba Int Corp Système de détection magnétorésistant et procédé pour la détection d images magnétiques de billets de banque
AU2009291659B2 (en) * 2008-09-11 2016-06-02 Toshiba International Corporation Magnetoresistive detection system and method for detection of magnetic image of bank notes
CN102272613B (zh) * 2008-12-10 2016-01-27 德国捷德有限公司 用于检查有价票据的磁传感器
WO2010066779A1 (fr) * 2008-12-10 2010-06-17 Giesecke & Devrient Gmbh Détecteur magnétique pour le contrôle de documents de valeur
US8387879B2 (en) 2008-12-10 2013-03-05 Giesecke & Devrient Gmbh Magnetic sensor for checking value document
DE102008061507A1 (de) * 2008-12-10 2010-06-17 Giesecke & Devrient Gmbh Magnetsensor zur Prüfung von Wertdokumenten
CN102576477A (zh) * 2009-09-01 2012-07-11 德国捷德有限公司 有价证券处理方法和设备
US10008064B2 (en) 2013-01-02 2018-06-26 TE Connectivity Sensors Germany GmbH Measuring device for measuring magnetic properties of the surroundings of the measuring device
CN104903938A (zh) * 2013-01-02 2015-09-09 精量电子（德国）公司 用于测量测量装置周围磁特性的测量装置
KR20150103010A (ko) * 2013-01-02 2015-09-09 엠이에이에스 도이치란트 게엠베하 측정 디바이스의 주변부들의 자기 특성들을 측정하기 위한 측정 디바이스
RU2648010C2 (ru) * 2013-01-02 2018-03-21 Меас Дойчланд Гмбх Измерительное устройство для измерения магнитных свойств окружающей среды измерительного устройства
KR102245568B1 (ko) 2013-01-02 2021-04-29 티이 커넥티비티 센서스 저머니 게엠베하 측정 디바이스의 주변부들의 자기 특성들을 측정하기 위한 측정 디바이스
JP2016503891A (ja) * 2013-01-02 2016-02-08 メアス ドイチュラント ゲゼルシャフト ミット ベシュレンクテル ハフツングＭＥＡＳ Ｄｅｕｔｓｃｈｌａｎｄ ＧｍｂＨ 自身の周辺の磁気的な特性を測定するための測定装置
WO2014106534A1 (fr) * 2013-01-02 2014-07-10 Meas Deutschland Gmbh Dispositif de mesure des propriétés magnétiques de l'environnement du dispositif de mesure
JP2015064309A (ja) * 2013-09-26 2015-04-09 セイコーＮｐｃ株式会社 多角柱磁石を用いた磁気センサ
US9588193B2 (en) 2014-03-13 2017-03-07 Kabushiki Kaisha Toshiba Magnetic sensor, magnetic inspection device, and sheet processing apparatus
EP2927882A1 (fr) * 2014-03-13 2015-10-07 Kabushiki Kaisha Toshiba Capteur magnétique, dispositif d'inspection magnétique et appareil de traitement de feuille
CN103926543A (zh) * 2014-04-14 2014-07-16 无锡乐尔科技有限公司 基于磁电阻技术的磁头
EP3133561A4 (fr) * 2014-04-18 2017-12-06 Multidimension Technology Co., Ltd. Puce de capteur de reconnaissance d'image magnétique dans le plan à faible hauteur de vol
CN105562435A (zh) * 2014-10-31 2016-05-11 科克斯技术有限及两合公司 机架更换系统、更换车和用于机架更换系统的转辙器以及包括轧制组件和机架更换系统的轧制设备
CN105562435B (zh) * 2014-10-31 2021-04-13 科克斯技术有限及两合公司 机架更换系统及方法、更换车和轧制设备
US10151066B2 (en) 2014-10-31 2018-12-11 Kocks Technik Gmbh & Co. Kg Rack change system, change carriage, and switch for a rack change system and rolling mill with a rolling block and a rack change system
CN105654608A (zh) * 2014-11-10 2016-06-08 山东新北洋信息技术股份有限公司 纸币处理方法和装置
CN105654608B (zh) * 2014-11-10 2018-05-22 山东新北洋信息技术股份有限公司 纸币处理方法和装置
DE102016111200A1 (de) 2016-06-20 2017-12-21 Noris Automation Gmbh Verfahren und Vorrichtung zur berührungslosen funktionalen Überprüfung elektronischer Bauelemente in Schaltungsanordnungen mit örtlicher Fehlerlokalisierung
DE102016111199A1 (de) 2016-06-20 2017-12-21 Noris Automation Gmbh Verfahren einer Erfassung einer räumlichen Magnetfeldverteilung von statischen und dynamischen Magnetfeldern und Magnetfeldsensoranordnung
JP2019184382A (ja) * 2018-04-09 2019-10-24 キヤノン電子株式会社 磁気識別装置
WO2020149375A1 (fr) * 2019-01-17 2020-07-23 キヤノン電子株式会社 Capteur d'identification magnétique
JPWO2020149375A1 (fr) * 2019-01-17 2020-07-23

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