BR9301339A - Metodo e dispositivo para a decodificacao de sinais codificados sob forma de frequencia dupla(f2f)em um meio portador magnetico de dados - Google Patents

Metodo e dispositivo para a decodificacao de sinais codificados sob forma de frequencia dupla(f2f)em um meio portador magnetico de dados

Info

Publication number
BR9301339A
BR9301339A BR9301339A BR9301339A BR9301339A BR 9301339 A BR9301339 A BR 9301339A BR 9301339 A BR9301339 A BR 9301339A BR 9301339 A BR9301339 A BR 9301339A BR 9301339 A BR9301339 A BR 9301339A
Authority
BR
Brazil
Prior art keywords
decoding
data carrier
magnetic data
double frequency
encoded signals
Prior art date
Application number
BR9301339A
Other languages
English (en)
Inventor
Helmut Scherzer
Original Assignee
Ibm
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 Ibm filed Critical Ibm
Publication of BR9301339A publication Critical patent/BR9301339A/pt

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M5/00—Conversion of the form of the representation of individual digits
    • H03M5/02—Conversion to or from representation by pulses
    • H03M5/04—Conversion to or from representation by pulses the pulses having two levels
    • H03M5/06—Code representation, e.g. transition, for a given bit cell depending only on the information in that bit cell
    • H03M5/12—Biphase level code, e.g. split phase code, Manchester code; Biphase space or mark code, e.g. double frequency code
    • 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
    • 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
    • G06K7/01—Details
    • G06K7/016—Synchronisation of sensing process
    • G06K7/0166—Synchronisation of sensing process by means of clock-signals derived from the code marks, e.g. self-clocking code

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Artificial Intelligence (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
BR9301339A 1992-04-15 1993-03-29 Metodo e dispositivo para a decodificacao de sinais codificados sob forma de frequencia dupla(f2f)em um meio portador magnetico de dados BR9301339A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP92106505A EP0565759B1 (en) 1992-04-15 1992-04-15 Method and device for decoding F2F signals read from a magnetic data carrier
SG1996000206A SG42858A1 (en) 1992-04-15 1992-04-15 Method and arrangement for decoding F2F signals read from a magnetic disk carrier

Publications (1)

Publication Number Publication Date
BR9301339A true BR9301339A (pt) 1993-10-19

Family

ID=26130881

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9301339A BR9301339A (pt) 1992-04-15 1993-03-29 Metodo e dispositivo para a decodificacao de sinais codificados sob forma de frequencia dupla(f2f)em um meio portador magnetico de dados

Country Status (9)

Country Link
US (1) US5434400A (pt)
EP (1) EP0565759B1 (pt)
JP (1) JP2752874B2 (pt)
KR (1) KR970004683B1 (pt)
CN (1) CN1033936C (pt)
BR (1) BR9301339A (pt)
CA (1) CA2087769C (pt)
DE (1) DE69222412T2 (pt)
SG (1) SG42858A1 (pt)

Families Citing this family (79)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5834747A (en) * 1994-11-04 1998-11-10 Pixel Instruments Universal credit card apparatus and method
DE19513260C1 (de) * 1995-04-07 1996-04-25 Agfa Gevaert Ag Verfahren und Vorrichtung zum Auslesen von magnetisch in einer transparenten Magnetschicht gespeicherten binären Informationen
DE69626169T2 (de) * 1995-11-20 2003-08-28 Seiko Epson Corp Gerät und Verfahren zum Erkennen von Zeichen mit magnetischer Tinte
US20030195848A1 (en) 1996-06-05 2003-10-16 David Felger Method of billing a purchase made over a computer network
US7555458B1 (en) 1996-06-05 2009-06-30 Fraud Control System.Com Corporation Method of billing a purchase made over a computer network
US8229844B2 (en) 1996-06-05 2012-07-24 Fraud Control Systems.Com Corporation Method of billing a purchase made over a computer network
GB9919333D0 (en) * 1999-08-16 1999-10-20 Flying Null Ltd Information bearing label codes
US6789736B2 (en) * 2001-08-22 2004-09-14 Cubic Corporation Distributed architecture for magnetic fare card processing
US20030058557A1 (en) * 2001-09-03 2003-03-27 Kabushiki Kaisha Sankyo Seiki Seisakusho Data demodulating method for magnetic recording data
KR100407511B1 (ko) * 2001-09-18 2003-11-28 사이버넷 주식회사 마그네틱 스트라이프 카드의 트랙 데이타 엑세스 방법
US9224142B2 (en) 2002-02-05 2015-12-29 Square, Inc. Card reader with power efficient architecture that includes a power supply and a wake up circuit
US9016572B2 (en) 2010-10-13 2015-04-28 Square, Inc. Systems and methods for financial transaction through miniaturized card with ASIC
US8235287B2 (en) 2010-10-13 2012-08-07 Square, Inc. Read head device with slot configured to reduce torque
US9582795B2 (en) 2002-02-05 2017-02-28 Square, Inc. Methods of transmitting information from efficient encryption card readers to mobile devices
US8876003B2 (en) 2010-10-13 2014-11-04 Square, Inc. Read head device with selected output jack characteristics
US9305314B2 (en) 2002-02-05 2016-04-05 Square, Inc. Methods of transmitting information to mobile devices using cost effective card readers
US9495676B2 (en) 2002-02-05 2016-11-15 Square, Inc. Method of transmitting information from a power efficient card to a mobile device
US9324100B2 (en) 2002-02-05 2016-04-26 Square, Inc. Card reader with asymmetric spring
US20120005039A1 (en) 2002-02-05 2012-01-05 Jack Dorsey Method of conducting financial transactions
US9262777B2 (en) 2002-02-05 2016-02-16 Square, Inc. Card reader with power efficient architecture that includes a wake-up circuit
US8573486B2 (en) 2010-10-13 2013-11-05 Square, Inc. Systems and methods for financial transaction through miniaturized card reader with confirmation of payment sent to buyer
US8870071B2 (en) 2010-10-13 2014-10-28 Square, Inc. Read head device with selected sampling rate
US9286635B2 (en) 2002-02-05 2016-03-15 Square, Inc. Method of transmitting information from efficient communication protocol card readers to mobile devices
US8302860B2 (en) 2010-10-13 2012-11-06 Square, Inc. Read head device with narrow card reading slot
US9916581B2 (en) 2002-02-05 2018-03-13 Square, Inc. Back end of payment system associated with financial transactions using card readers coupled to mobile devices
US9262757B2 (en) 2002-02-05 2016-02-16 Square, Inc. Method of transmitting information from a card reader with a power supply and wake-up circuit to a mobile device
US8500018B2 (en) 2010-10-13 2013-08-06 Square, Inc. Systems and methods for financial transaction through miniaturized card reader with decoding on a seller's mobile device
US8573487B2 (en) 2010-10-13 2013-11-05 Square, Inc. Integrated read head device
US9495675B2 (en) 2002-02-05 2016-11-15 Square, Inc. Small card reader configured to be coupled to a mobile device
US8870070B2 (en) 2010-10-13 2014-10-28 Square, Inc. Card reader device
US7225994B2 (en) * 2002-08-06 2007-06-05 Innovative Card Technologies, Inc. Financial transaction card with sound recording
US7255272B2 (en) 2003-06-09 2007-08-14 Brush Industries, Inc. Card reader/writer devices and methods
JP4872224B2 (ja) 2005-03-23 2012-02-08 パナソニック電工株式会社 無電極放電ランプと同ランプを備えた照明器具
CN101517698B (zh) 2006-09-29 2010-11-03 松下电工株式会社 无电极放电灯、照明装置以及用于制造无电极放电灯的方法
US7886976B2 (en) 2007-09-20 2011-02-15 Verifone, Inc. Electromagnetic field induced MSR swipes detection
US8413892B2 (en) * 2007-12-24 2013-04-09 Dynamics Inc. Payment cards and devices with displays, chips, RFIDs, magnetic emulators, magnetic encoders, and other components
US9436955B2 (en) 2009-06-10 2016-09-06 Square, Inc. Methods for transferring funds using a payment service where financial account information is only entered once with a payment service and need not be re-entered for future transfers
US8701997B2 (en) 2010-10-13 2014-04-22 Square, Inc. Decoding systems with a decoding engine running on a mobile device and using financial transaction card information to create a send funds application on the mobile device
US8612352B2 (en) 2010-10-13 2013-12-17 Square, Inc. Decoding systems with a decoding engine running on a mobile device and coupled to a payment system that includes identifying information of second parties qualified to conduct business with the payment system
MX2012004397A (es) 2009-10-13 2012-08-15 Square Inc Sistemas y metodos para transaccion financiera a traves de lector de tarjeta miniaturizado.
US8571989B2 (en) 2010-10-13 2013-10-29 Square, Inc. Decoding systems with a decoding engine running on a mobile device and coupled to a social network
US8602305B2 (en) 2010-10-13 2013-12-10 Square, Inc. Decoding systems with a decoding engine running on a mobile device configured to be coupled and decoupled to a card reader with wake-up electronics
JP5908487B2 (ja) * 2010-10-13 2016-04-26 スクエア インコーポレイテッド トルクを低減するように構成されたスロットを有する読取ヘッドデバイス
US8640953B2 (en) 2010-10-13 2014-02-04 Square, Inc. Decoding system running on a mobile device and coupled to a payment system that includes at least one of, a user database, a product database and a transaction database
US8701996B2 (en) 2010-10-13 2014-04-22 Square, Inc. Cost effective card reader and methods to be configured to be coupled to a mobile device
US8573489B2 (en) 2010-10-13 2013-11-05 Square, Inc. Decoding systems with a decoding engine running on a mobile device with a touch screen
US9454866B2 (en) 2010-10-13 2016-09-27 Square, Inc. Method of conducting financial transactions where a payer's financial account information is entered only once with a payment system
US8678277B2 (en) 2010-10-13 2014-03-25 Square, Inc. Decoding system coupled to a payment system that includes a cryptographic key
US9619797B2 (en) 2010-10-13 2017-04-11 Square, Inc. Payment methods with a payment service and tabs selected by a first party and opened by a second party at an geographic location of the first party's mobile device
US9576159B1 (en) 2011-01-24 2017-02-21 Square, Inc. Multiple payment card reader system
US9373112B1 (en) 2012-03-16 2016-06-21 Square, Inc. Ranking of merchants for cardless payment transactions
US11449854B1 (en) 2012-10-29 2022-09-20 Block, Inc. Establishing consent for cardless transactions using short-range transmission
US9652791B1 (en) 2013-02-08 2017-05-16 Square, Inc. Updating merchant location for cardless payment transactions
US9940616B1 (en) 2013-03-14 2018-04-10 Square, Inc. Verifying proximity during payment transactions
US9924322B2 (en) 2013-07-23 2018-03-20 Square, Inc. Computing distances of devices
US10163148B1 (en) 2013-11-13 2018-12-25 Square, Inc. Wireless beacon shopping experience
US8910868B1 (en) 2013-11-27 2014-12-16 Square, Inc. Firmware management
US9633236B1 (en) 2013-12-11 2017-04-25 Square, Inc. Power harvesting in reader devices
US8931699B1 (en) 2013-12-11 2015-01-13 Square, Inc. Bidirectional audio communication in reader devices
US10198731B1 (en) 2014-02-18 2019-02-05 Square, Inc. Performing actions based on the location of mobile device during a card swipe
US9256769B1 (en) 2014-02-25 2016-02-09 Square, Inc. Mobile reader device
US9569767B1 (en) 2014-05-06 2017-02-14 Square, Inc. Fraud protection based on presence indication
US10026083B1 (en) 2014-05-11 2018-07-17 Square, Inc. Tab for a venue
US10304043B1 (en) 2014-05-21 2019-05-28 Square, Inc. Multi-peripheral host device
USD762651S1 (en) 2014-06-06 2016-08-02 Square, Inc. Mobile device case
US9760740B1 (en) 2014-06-23 2017-09-12 Square, Inc. Terminal case with integrated dual reader stack
US9256770B1 (en) 2014-07-02 2016-02-09 Square, Inc. Terminal case with integrated reader and shortened base
US9799025B2 (en) 2014-08-19 2017-10-24 Square, Inc. Energy harvesting bidirectional audio interface
US9208361B1 (en) 2014-12-18 2015-12-08 Verifone Inc. Magnetic stripe card reader
US9355285B1 (en) 2015-02-12 2016-05-31 Square, Inc. Tone-based wake up circuit for card reader
US9436938B1 (en) 2015-05-13 2016-09-06 Square, Inc. Transaction payment processing by multiple data centers
US10628811B2 (en) 2016-03-15 2020-04-21 Square, Inc. System-based detection of card sharing and fraud
US10410200B2 (en) 2016-03-15 2019-09-10 Square, Inc. Cloud-based generation of receipts using transaction information
US10636019B1 (en) 2016-03-31 2020-04-28 Square, Inc. Interactive gratuity platform
US10402807B1 (en) 2017-02-28 2019-09-03 Square, Inc. Estimating interchange fees for card payments
US10410021B1 (en) 2017-12-08 2019-09-10 Square, Inc. Transaction object reader with digital signal input/output and internal audio-based communication
US11087301B1 (en) 2017-12-19 2021-08-10 Square, Inc. Tamper resistant device
USD905059S1 (en) 2018-07-25 2020-12-15 Square, Inc. Card reader device
CN110647776B (zh) * 2019-09-12 2023-03-14 兆讯恒达科技股份有限公司 一种磁条卡解码的方法

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4044331A (en) * 1973-07-16 1977-08-23 International Business Machines Corporation Data input apparatus having bidirectional reader for inputting alternative messages
US3969613A (en) * 1975-02-03 1976-07-13 International Business Machines Corporation Two frequency coded data interpreting method and apparatus
US3938090A (en) * 1975-02-13 1976-02-10 Bell Telephone Laboratories, Incorporated Terminal apparatus
US4486653A (en) * 1981-10-28 1984-12-04 International Business Machines Adaptive rate card data reproducing and storing apparatus
FR2545631B1 (fr) * 1983-05-06 1987-07-17 Lewiner Jacques Perfectionnements aux procedes et dispositifs de lecture des cartes magnetiques de controle d'acces ou analogues
US4626670A (en) * 1983-06-16 1986-12-02 Xico, Inc. Method and system for decoding time-varying, two-frequency, coherent-phase data
US4788420A (en) * 1985-08-28 1988-11-29 Verifone, Inc. System and method for reading data record stripes on data cards
US5019696A (en) * 1987-08-10 1991-05-28 Verifone, Inc. System and method for reading data record stripes on data cards
US4868569A (en) * 1987-12-15 1989-09-19 Schlumberger Well Services Biphase digital look-ahead demodulating method and apparatus
US5168275A (en) * 1990-02-07 1992-12-01 International Business Machines Corporation Method and apparatus for decoding two frequency (f/2f) data signals
US5204513A (en) * 1990-10-02 1993-04-20 American Magnetics Corporation Decoder for magnetic stripe recording

Also Published As

Publication number Publication date
CA2087769C (en) 1996-10-29
US5434400A (en) 1995-07-18
KR970004683B1 (ko) 1997-04-02
SG42858A1 (en) 1997-10-17
DE69222412T2 (de) 1998-03-26
KR930022342A (ko) 1993-11-23
JP2752874B2 (ja) 1998-05-18
CN1033936C (zh) 1997-01-29
CN1080425A (zh) 1994-01-05
EP0565759B1 (en) 1997-09-24
EP0565759A1 (en) 1993-10-20
JPH065006A (ja) 1994-01-14
DE69222412D1 (de) 1997-10-30
CA2087769A1 (en) 1993-10-16

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