ES2117007T3 - Procedimiento para la evaluacion de informaciones binarias de una tarjeta de memoria magnetica. - Google Patents

Procedimiento para la evaluacion de informaciones binarias de una tarjeta de memoria magnetica.

Info

Publication number
ES2117007T3
ES2117007T3 ES91905271T ES91905271T ES2117007T3 ES 2117007 T3 ES2117007 T3 ES 2117007T3 ES 91905271 T ES91905271 T ES 91905271T ES 91905271 T ES91905271 T ES 91905271T ES 2117007 T3 ES2117007 T3 ES 2117007T3
Authority
ES
Spain
Prior art keywords
magnetic
data
stored
evaluation
procedure
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
ES91905271T
Other languages
English (en)
Inventor
Hubert Behr
Wolfgang Fick
Waldemar Jager
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wincor Nixdorf International GmbH
Original Assignee
Siemens Nixdorf Informationssysteme AG
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 Siemens Nixdorf Informationssysteme AG filed Critical Siemens Nixdorf Informationssysteme AG
Application granted granted Critical
Publication of ES2117007T3 publication Critical patent/ES2117007T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/14—Digital recording or reproducing using self-clocking codes
    • G11B20/1403—Digital recording or reproducing using self-clocking codes characterised by the use of two levels
    • G11B20/1407—Digital recording or reproducing using self-clocking codes characterised by the use of two levels code representation depending on a single bit, i.e. where a one is always represented by a first code symbol while a zero is always represented by a second code symbol
    • G11B20/1419—Digital recording or reproducing using self-clocking codes characterised by the use of two levels code representation depending on a single bit, i.e. where a one is always represented by a first code symbol while a zero is always represented by a second code symbol to or from biphase level coding, i.e. to or from codes where a one is coded as a transition from a high to a low level during the middle of a bit cell and a zero is encoded as a transition from a low to a high level during the middle of a bit cell or vice versa, e.g. split phase code, Manchester code conversion to or from biphase space or mark coding, i.e. to or from codes where there is a transition at the beginning of every bit cell and a one has no second transition and a zero has a second transition one half of a bit period later or vice versa, e.g. double frequency code, FM code

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Digital Magnetic Recording (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
  • Measuring Magnetic Variables (AREA)
  • Inspection Of Paper Currency And Valuable Securities (AREA)

Abstract

EN UN PROCESO PARA EVALUAR LOS DATOS BINARIOS ALMACENADOS EN LA PISTA MAGNETICA DE UNA TARJETA DE ALMACENAMIENTO MAGNETICA (10) A MODO DE CAMBIOS DE FLUJO SEGUN EL CODIGO DE DOS FRECUENCIAS, SE PRODUCE UN MOVIMIENTO RELATIVO (V) ENTRE LA TARJETA DE ALMACENAMIENTO MAGNETICA (10) Y UN TRANSFORMADOR ELECTROMAGNETICO (30) QUE EMITE IMPULSOS DE TENSION INDUCIDOS POR LOS CAMBIOS EN EL FLUJO MAGNETICO. LOS INTERVALOS DE TIEMPO ENTRE LOS IMPULSOS DE TENSION SE EVALUAN POR ORDEN PARA OBTENER LOS DATOS . CON ESTE FIN, LA NORMALIZACION SE LLEVA A CABO CON DATOS PRELIMINARES UNIFORMES AL PRINCIPIO DE UNA OPERACION DE EXPLORACION. LA SEÑAL DE SALIDA (U) DEL TRANSFORMADOR ELECTROMAGNETICO (30) SE CONVIERTE EN VALORES DIGITALES A TIEMPOS PREDETERMINADOS. LOS VALORES DIGITALES SE ALMACENAN EN LA SECUENCIA ES QUE SE ALMACENAN Y EVALUAN PARA OBTENER LOS DATOS.
ES91905271T 1990-03-01 1991-03-01 Procedimiento para la evaluacion de informaciones binarias de una tarjeta de memoria magnetica. Expired - Lifetime ES2117007T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4006426A DE4006426C2 (de) 1990-03-01 1990-03-01 Verfahren zum Auswerten binärer Informationen einer Magnetspeicherkarte

Publications (1)

Publication Number Publication Date
ES2117007T3 true ES2117007T3 (es) 1998-08-01

Family

ID=6401200

Family Applications (1)

Application Number Title Priority Date Filing Date
ES91905271T Expired - Lifetime ES2117007T3 (es) 1990-03-01 1991-03-01 Procedimiento para la evaluacion de informaciones binarias de una tarjeta de memoria magnetica.

Country Status (7)

Country Link
US (2) US5285328A (es)
EP (2) EP0483296B1 (es)
JP (1) JPH0648585B2 (es)
KR (1) KR960002148B1 (es)
DE (2) DE4006426C2 (es)
ES (1) ES2117007T3 (es)
WO (1) WO1991013436A2 (es)

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JP2962627B2 (ja) * 1993-01-20 1999-10-12 沖電気工業株式会社 磁気データ読取装置
US5815482A (en) * 1996-01-22 1998-09-29 T Squared G, Inc. Multibyte random access mass storage/memory system
DE19804196A1 (de) * 1998-02-03 1999-08-12 Siemens Ag Verfahren zur Auswertung von Kennwerten piezo-mechanischer Systeme
DE19823065A1 (de) * 1998-05-22 1999-11-25 Siemens Nixdorf Inf Syst Einrichtung und Verfahren zum Auswerten binärer Informationen unter Verwendung einer DMA Einheit
JP3534629B2 (ja) 1998-12-10 2004-06-07 株式会社三協精機製作所 磁気記録データの復調方法
DE60037698D1 (de) 1999-03-30 2008-02-21 Nidec Sankyo Corp Datendemodulationsverfahren und -gerät für magnetische Karte.
JP2000306056A (ja) 1999-04-22 2000-11-02 Sankyo Seiki Mfg Co Ltd 磁気カードリーダー
US6674786B1 (en) 1999-04-23 2004-01-06 Sankyo Seiki Mfg. Co., Ltd. Data demodulation
EP1605389B1 (en) * 2000-01-24 2009-03-18 Nidec Sankyo Corporation Magnetic card reader and reproduction and demodulation method
JP4797136B2 (ja) * 2005-09-27 2011-10-19 日本電産サンキョー株式会社 磁気データ読取回路及びカード処理装置
US7886976B2 (en) * 2007-09-20 2011-02-15 Verifone, Inc. Electromagnetic field induced MSR swipes detection
US8328106B1 (en) * 2010-04-05 2012-12-11 Converta Card, LLC Convertible transaction card
JP5752508B2 (ja) * 2011-07-25 2015-07-22 日本電産サンキョー株式会社 磁気データの復調方法および磁気データの復調装置
US9208361B1 (en) 2014-12-18 2015-12-08 Verifone Inc. Magnetic stripe card reader
US10476775B2 (en) * 2016-02-22 2019-11-12 Cable Television Laboratories, Inc. Systems and methods for LTE-U detection
US10225863B2 (en) 2016-02-22 2019-03-05 Cable Television Laboratories, Inc. Systems and methods for LTE-U detection using PHY layer processing
JP7016749B2 (ja) * 2018-03-28 2022-02-07 日本電産サンキョー株式会社 磁気データの復調方法および復調装置

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Publication number Priority date Publication date Assignee Title
FR1505685A (fr) * 1965-12-10 1967-12-15 Siemens Ag Procédé et dispositif pour lire des informations dans des mémoires à couches magnétiques
US3684967A (en) * 1971-01-08 1972-08-15 Cogar Corp Automatic control of position and width of a tracking window in a data recovery system
US3969613A (en) * 1975-02-03 1976-07-13 International Business Machines Corporation Two frequency coded data interpreting method and apparatus
US4027267A (en) * 1976-06-01 1977-05-31 International Business Machines Corporation Method of decoding data content of F2F and phase shift encoded data streams
GB1577916A (en) * 1978-01-18 1980-10-29 Ibm Data recognition apparatus
US4245211A (en) * 1978-11-13 1981-01-13 Recognition Equipment Incorporated MICR Waveform analyzer
US4358846A (en) * 1979-07-27 1982-11-09 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Serial data correlator/code translator
US4306194A (en) * 1979-10-11 1981-12-15 International Business Machines Corporation Data signal detection circuit
US4267595A (en) * 1980-02-04 1981-05-12 International Telephone And Telegraph Corporation AMI Decoder apparatus
US4393458A (en) * 1980-02-06 1983-07-12 Sperry Corporation Data recovery method and apparatus using variable window
US4626670A (en) * 1983-06-16 1986-12-02 Xico, Inc. Method and system for decoding time-varying, two-frequency, coherent-phase data
GB2168575B (en) * 1984-12-18 1988-09-14 Unisys Corp Improved data channel
US5019696A (en) * 1987-08-10 1991-05-28 Verifone, Inc. System and method for reading data record stripes on data cards
IT1185412B (it) * 1985-10-10 1987-11-12 Honeywell Inf Systems Tseparatore digitale di dati
DE3714244C2 (de) * 1987-04-29 2001-05-17 Wilfried Rinas Verfahren zum Erfassen und Darstellen von Lesesignalen von Magnetstreifenspuren
JPH069106B2 (ja) * 1987-07-22 1994-02-02 シャープ株式会社 ディジタルデ−タ検出器
US5229894A (en) * 1988-02-16 1993-07-20 M.R. Sensors Limited Method and apparatus for reading and decoding information using a magnetoresistive sensor
JPH01229516A (ja) * 1988-03-10 1989-09-13 Sony Corp 自動等化器
US4968985A (en) * 1988-06-06 1990-11-06 Digital Equipment Corporation Data demodulation system
DE3839749A1 (de) * 1988-11-25 1990-06-07 Arnold & Richter Kg Verfahren zum wiedergewinnen einer kodierten signalfolge
DE4020875A1 (de) * 1990-06-29 1992-01-02 Digital Equipment Int Verfahren und schaltungsanordnung zum umwandeln von analogen lesesignalen in digitale signale
JP3282180B2 (ja) * 1990-08-28 2002-05-13 ソニー株式会社 磁気記録再生装置

Also Published As

Publication number Publication date
US5285328A (en) 1994-02-08
DE4006426A1 (de) 1991-09-05
EP0785550A1 (de) 1997-07-23
JPH0648585B2 (ja) 1994-06-22
KR920701971A (ko) 1992-08-12
EP0483296B1 (de) 1998-05-27
WO1991013436A3 (de) 1991-11-14
EP0483296A1 (de) 1992-05-06
DE4006426C2 (de) 1993-11-18
KR960002148B1 (ko) 1996-02-13
WO1991013436A2 (de) 1991-09-05
US5396370A (en) 1995-03-07
JPH04504480A (ja) 1992-08-06
DE59108996D1 (de) 1998-07-02

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