[go: up one dir, main page]

IT1170531B - Dispositivo di lettura ed obliterazione di areole a film sottile di materiale ad anisotropia magnetica uniassiale, deposte su di carte di credito o simili - Google Patents

Dispositivo di lettura ed obliterazione di areole a film sottile di materiale ad anisotropia magnetica uniassiale, deposte su di carte di credito o simili

Info

Publication number
IT1170531B
IT1170531B IT49205/83A IT4920583A IT1170531B IT 1170531 B IT1170531 B IT 1170531B IT 49205/83 A IT49205/83 A IT 49205/83A IT 4920583 A IT4920583 A IT 4920583A IT 1170531 B IT1170531 B IT 1170531B
Authority
IT
Italy
Prior art keywords
reading
areolae
thin film
credit cards
magnetic anisotropy
Prior art date
Application number
IT49205/83A
Other languages
English (en)
Other versions
IT8349205A0 (it
Inventor
Feo Paolo De
Original Assignee
Ipm Ind Politecnica Meridional
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 Ipm Ind Politecnica Meridional filed Critical Ipm Ind Politecnica Meridional
Priority to IT49205/83A priority Critical patent/IT1170531B/it
Publication of IT8349205A0 publication Critical patent/IT8349205A0/it
Priority to AT84830282T priority patent/ATE50372T1/de
Priority to DE8484830282T priority patent/DE3481352D1/de
Priority to DE198484830282T priority patent/DE157995T1/de
Priority to EP84830282A priority patent/EP0157995B1/en
Priority to ES536907A priority patent/ES536907A0/es
Priority to CA000465904A priority patent/CA1227282A/en
Priority to US06/663,127 priority patent/US4672183A/en
Application granted granted Critical
Publication of IT1170531B publication Critical patent/IT1170531B/it

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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
    • G06K7/087—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 flux-sensitive, e.g. magnetic, detectors

Landscapes

  • Engineering & Computer Science (AREA)
  • Artificial Intelligence (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Recording Or Reproducing By Magnetic Means (AREA)
  • Measuring Magnetic Variables (AREA)
  • Credit Cards Or The Like (AREA)
  • Magnetic Record Carriers (AREA)
  • Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
  • Financial Or Insurance-Related Operations Such As Payment And Settlement (AREA)
  • Paints Or Removers (AREA)
IT49205/83A 1983-10-21 1983-10-21 Dispositivo di lettura ed obliterazione di areole a film sottile di materiale ad anisotropia magnetica uniassiale, deposte su di carte di credito o simili IT1170531B (it)

Priority Applications (8)

Application Number Priority Date Filing Date Title
IT49205/83A IT1170531B (it) 1983-10-21 1983-10-21 Dispositivo di lettura ed obliterazione di areole a film sottile di materiale ad anisotropia magnetica uniassiale, deposte su di carte di credito o simili
AT84830282T ATE50372T1 (de) 1983-10-21 1984-10-18 Anordnung zur ablesung und annullierung von kleinen duennschicht-zonen aus einem material mit magnetischer uniaxialer anisotropie, das auf kreditkarten oder dergleichen aufgebracht ist.
DE8484830282T DE3481352D1 (de) 1983-10-21 1984-10-18 Anordnung zur ablesung und annullierung von kleinen duennschicht-zonen aus einem material mit magnetischer uniaxialer anisotropie, das auf kreditkarten oder dergleichen aufgebracht ist.
DE198484830282T DE157995T1 (de) 1983-10-21 1984-10-18 Anordnung zur ablesung und annullierung von kleinen duennschicht-zonen aus einem material mit magnetischer uniaxialer anisotropie, das auf kreditkarten oder dergleichen aufgebracht ist.
EP84830282A EP0157995B1 (en) 1983-10-21 1984-10-18 Device for reading and cancelling thin film areolae of material having uniaxial, magnetic anisotropy and deposited on credit cards or the like
ES536907A ES536907A0 (es) 1983-10-21 1984-10-19 Dispositivo para lectura y cancelacion de tarjetas de credito, tarjetas de identidad o similares
CA000465904A CA1227282A (en) 1983-10-21 1984-10-19 Device for reading and cancelling thin film areolae
US06/663,127 US4672183A (en) 1983-10-21 1984-10-22 Device for reading and cancelling thin film areolae of material having uniaxial, magnetic anisotropy and deposited on credit cards or the like

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT49205/83A IT1170531B (it) 1983-10-21 1983-10-21 Dispositivo di lettura ed obliterazione di areole a film sottile di materiale ad anisotropia magnetica uniassiale, deposte su di carte di credito o simili

Publications (2)

Publication Number Publication Date
IT8349205A0 IT8349205A0 (it) 1983-10-21
IT1170531B true IT1170531B (it) 1987-06-03

Family

ID=11269940

Family Applications (1)

Application Number Title Priority Date Filing Date
IT49205/83A IT1170531B (it) 1983-10-21 1983-10-21 Dispositivo di lettura ed obliterazione di areole a film sottile di materiale ad anisotropia magnetica uniassiale, deposte su di carte di credito o simili

Country Status (7)

Country Link
US (1) US4672183A (it)
EP (1) EP0157995B1 (it)
AT (1) ATE50372T1 (it)
CA (1) CA1227282A (it)
DE (2) DE157995T1 (it)
ES (1) ES536907A0 (it)
IT (1) IT1170531B (it)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9016830D0 (en) * 1990-07-31 1990-09-12 Gec Avery Ltd Reader unit
US6050488A (en) * 1995-01-23 2000-04-18 Telecomunicacoes Brasileiras S/A - Telebras Circuit for driving inductive sensors for reading and debiting prepaid cards
US8579203B1 (en) * 2008-12-19 2013-11-12 Dynamics Inc. Electronic magnetic recorded media emulators in magnetic card devices

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2926844A (en) * 1952-03-14 1960-03-01 George C Devol Sensing device for magnetic record
DE1074295B (de) * 1957-01-25 1960-01-28 IBM Deutschland Internationale Buro-Maschmen Gesellschaft mbH Sin delfingen (Wurtt) Anordnung zur Feststellung von Mar kierungen
US3290487A (en) * 1962-04-16 1966-12-06 Sperry Rand Corp Signal transducer
US3423742A (en) * 1963-08-12 1969-01-21 Ncr Co Reluctance-type transducer device
US4158433A (en) * 1976-11-22 1979-06-19 Glen Peterson Method of and apparatus for securing and storing personal information
FR2385154A1 (fr) * 1977-03-25 1978-10-20 Metalimphy Procede et dispositif d'identification d'etiquettes codees
IT1109303B (it) * 1978-10-30 1985-12-16 Ipm Ind Politecnica Meridional Carta di credito a magnetizzazione anisotropa uniassale
DE3038614A1 (de) * 1980-10-13 1982-04-22 Copytex-Abrechnungssysteme für Dienstleistungsautomaten GbmH, 7742 St Georgen Verfahren zum rueckuebertragen von einmal auf einem datentraeger eingetragener information und vorrichtung zum ein- und/oder auslesen einer gegen rueckuebertragung geschuetzten information

Also Published As

Publication number Publication date
ATE50372T1 (de) 1990-02-15
CA1227282A (en) 1987-09-22
DE157995T1 (de) 1986-04-10
EP0157995B1 (en) 1990-02-07
IT8349205A0 (it) 1983-10-21
DE3481352D1 (de) 1990-03-15
EP0157995A3 (en) 1987-01-28
US4672183A (en) 1987-06-09
ES8603104A1 (es) 1985-11-16
ES536907A0 (es) 1985-11-16
EP0157995A2 (en) 1985-10-16

Similar Documents

Publication Publication Date Title
US5994898A (en) Apparatus and method for measuring instantaneous power using a magneto-optic Kerr effect sensor
DK160062C (da) Tyveridetekteringssystem og amorf magnetisk tyverimarkoer til brug deri
SE8306208D0 (sv) Larmanordning
JPS5853395B2 (ja) 探査領域内の物体の存在を検出する方法および装置
JP2619943B2 (ja) マーカー
US4922200A (en) Apparatus for measuring the hysteresis loop of magnetic film
IT1170531B (it) Dispositivo di lettura ed obliterazione di areole a film sottile di materiale ad anisotropia magnetica uniassiale, deposte su di carte di credito o simili
US3657641A (en) Anisotropic thin film plated wire magnetometer utilizing a coil of plated wire having a plurality of turns
FR2406824A1 (fr) Appareil d'essai non destructif a ultrasons
CA1280167C (en) Magnetic field direction indicating devices
FR2352307A1 (fr) Dispositif pour la mesure d'un champ magnetique au moyen d'un magnetometre du type a barreau
Yamaguchi et al. Directivity and sensitivity of high-frequency carrier type thin-film magnetic field sensor
Ozhogin et al. On magnetoelastic soliton in antiferromagnet
DE69618623D1 (de) Induktive vorrichtung zur bestimmung der lage und der abmessungen von messobjekten aus elektrisch leitfähigem material
SU842654A1 (ru) Магнитошумовой датчик
Seavey Jr Galvanomagnetic effects in ferromagnetic resonance
SU485500A1 (ru) Датчик дл считывани цилиндрических магнитных доменов
JPS62106756A (ja) 核磁気共鳴装置
Cloutier et al. A Vector Magnetometer System for Detection, Tracking, and Survey of Submerged and Buried Transmission Cables and Lines from Controlled Submersible Vehicle
GB1411819A (en) Magnetic device having domains
US4038597A (en) Magnetoresistance detection device having noise suppression
SU1023235A1 (ru) Магнитоконтактный первичный преобразователь
SU1188628A1 (ru) Электромагнитный зонд
How et al. Generation of high-order harmonics in insulator magnetic fluxgate sensor cores
SU1166179A1 (ru) Устройство дл записи информации

Legal Events

Date Code Title Description
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19941019