DE60037698D1 - Datendemodulationsverfahren und -gerät für magnetische Karte. - Google Patents

Datendemodulationsverfahren und -gerät für magnetische Karte.

Info

Publication number
DE60037698D1
DE60037698D1 DE60037698T DE60037698T DE60037698D1 DE 60037698 D1 DE60037698 D1 DE 60037698D1 DE 60037698 T DE60037698 T DE 60037698T DE 60037698 T DE60037698 T DE 60037698T DE 60037698 D1 DE60037698 D1 DE 60037698D1
Authority
DE
Germany
Prior art keywords
magnetic card
data demodulation
demodulation method
data
magnetic
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
DE60037698T
Other languages
English (en)
Inventor
Hiroshi Nakamura
Mitsuo Yokozawa
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.)
Nidec Sankyo Corp
Original Assignee
Nidec Sankyo Corp
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 claimed from JP08804899A external-priority patent/JP3571246B2/ja
Priority claimed from JP11097615A external-priority patent/JP2000293961A/ja
Priority claimed from JP10506599A external-priority patent/JP3681570B2/ja
Application filed by Nidec Sankyo Corp filed Critical Nidec Sankyo Corp
Application granted granted Critical
Publication of DE60037698D1 publication Critical patent/DE60037698D1/de
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
    • G11B20/10—Digital recording or reproducing
    • G11B20/10009—Improvement or modification of read or write signals
    • 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
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/10—Frequency-modulated carrier systems, i.e. using frequency-shift keying
    • H04L27/14—Demodulator circuits; Receiver circuits
    • H04L27/156—Demodulator circuits; Receiver circuits with demodulation using temporal properties of the received signal, e.g. detecting pulse width
    • H04L27/1563—Demodulator circuits; Receiver circuits with demodulation using temporal properties of the received signal, e.g. detecting pulse width using transition or level detection

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Credit Cards Or The Like (AREA)
DE60037698T 1999-03-30 2000-03-27 Datendemodulationsverfahren und -gerät für magnetische Karte. Expired - Lifetime DE60037698D1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP08804899A JP3571246B2 (ja) 1999-03-30 1999-03-30 データの復調方法
JP11097615A JP2000293961A (ja) 1999-04-05 1999-04-05 データの復調方法
JP10506599A JP3681570B2 (ja) 1999-04-13 1999-04-13 データの復調方法

Publications (1)

Publication Number Publication Date
DE60037698D1 true DE60037698D1 (de) 2008-02-21

Family

ID=27305725

Family Applications (1)

Application Number Title Priority Date Filing Date
DE60037698T Expired - Lifetime DE60037698D1 (de) 1999-03-30 2000-03-27 Datendemodulationsverfahren und -gerät für magnetische Karte.

Country Status (4)

Country Link
US (1) US6757342B1 (de)
EP (1) EP1041556B1 (de)
AT (1) ATE383645T1 (de)
DE (1) DE60037698D1 (de)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6674786B1 (en) * 1999-04-23 2004-01-06 Sankyo Seiki Mfg. Co., Ltd. Data demodulation
US20030058557A1 (en) * 2001-09-03 2003-03-27 Kabushiki Kaisha Sankyo Seiki Seisakusho Data demodulating method for magnetic recording data
JP3717880B2 (ja) 2002-10-01 2005-11-16 パイオニア株式会社 情報記録媒体、情報記録装置及び方法、情報再生装置及び方法、情報記録再生装置及び方法、記録又は再生制御用のコンピュータプログラム、並びに制御信号を含むデータ構造
KR100561414B1 (ko) * 2003-02-24 2006-03-16 삼성전자주식회사 브라우저블 슬라이드 쇼 제공을 위한 데이터 복호 장치,그 복호 방법 및 이를 위한 정보저장매체
JP2007311002A (ja) * 2006-05-22 2007-11-29 Nidec Sankyo Corp 磁気データの復調方法
US8612029B2 (en) * 2007-06-15 2013-12-17 Shell Oil Company Framework and method for monitoring equipment
US7995675B2 (en) * 2008-02-14 2011-08-09 International Business Machines Corporation Apparatus and method to communicate information within a data storage library
JP6169322B2 (ja) * 2012-03-30 2017-07-26 日本電産サンキョー株式会社 情報再生装置および情報再生方法
JP6050059B2 (ja) * 2012-08-30 2016-12-21 日本電産サンキョー株式会社 データ復調装置、データ復調方法、磁気記録データ再生装置、およびプログラム
CN106997443B (zh) * 2017-01-09 2019-08-23 北京信息职业技术学院 磁条卡解码方法及装置
CN112395895B (zh) * 2019-08-16 2023-08-25 深圳市复恒自控技术有限公司 磁条软件解码方法、装置及计算机可读存储介质
CN115348141B (zh) * 2022-07-29 2023-10-31 新诺北斗航科信息技术（厦门）股份有限公司 一种dsc信号的解调方法、装置及存储介质

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57184356A (en) * 1981-05-08 1982-11-13 Seiko Epson Corp Fsk demodulating circuit
JP2619381B2 (ja) * 1987-03-20 1997-06-11 株式会社日立製作所 光学的情報再生装置
US5168275A (en) * 1990-02-07 1992-12-01 International Business Machines Corporation Method and apparatus for decoding two frequency (f/2f) data signals
DE4006426C2 (de) 1990-03-01 1993-11-18 Siemens Nixdorf Inf Syst Verfahren zum Auswerten binärer Informationen einer Magnetspeicherkarte
JPH0923248A (ja) * 1995-07-07 1997-01-21 Japan Radio Co Ltd Ｆｓｋ復調回路
US5670951A (en) * 1995-07-17 1997-09-23 Motorola, Inc. Radio communication device and method for generating threshold levels in a radio communication device for receiving four-level signals
US6233107B1 (en) * 1998-03-20 2001-05-15 Seagate Technology Llc Analog self-synchronization subsystem based on peak detection and post processing in a sampled channel of digital magnetic recording
US6377633B1 (en) * 1998-10-09 2002-04-23 Harris Corporation Apparatus and method for decoding asynchronous data

Also Published As

Publication number Publication date
EP1041556A2 (de) 2000-10-04
EP1041556B1 (de) 2008-01-09
ATE383645T1 (de) 2008-01-15
US6757342B1 (en) 2004-06-29
EP1041556A3 (de) 2001-05-02

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Legal Events

Date Code Title Description
8332 No legal effect for de