AT383645T - Datendemodulationsverfahren und -gerät für magnetische karte. - Google Patents

Datendemodulationsverfahren und -gerät für magnetische karte.

Info

Publication number
AT383645T
AT383645T AT00302462T AT00302462T AT383645T AT 383645 T AT383645 T AT 383645T AT 00302462 T AT00302462 T AT 00302462T AT 00302462 T AT00302462 T AT 00302462T AT 383645 T AT383645 T AT 383645T
Authority
AT
Austria
Prior art keywords
datendemodulationsverfahren
apparatus
magnetic card
card
magnetic
Prior art date
Application number
AT00302462T
Other languages
English (en)
Inventor
Hiroshi Nakamura
Mitsuo Yokozawa
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 to JP08804899A priority Critical patent/JP3571246B2/ja
Priority to JP11097615A priority patent/JP2000293961A/ja
Priority to JP10506599A priority patent/JP3681570B2/ja
Application filed by Nidec Sankyo Corp filed Critical Nidec Sankyo Corp
Publication of AT383645T publication Critical patent/AT383645T/de

Links

Classifications

    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10Digital recording or reproducing
    • G11B20/10009Improvement or modification of read or write signals
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10Digital recording or reproducing
    • G11B20/14Digital recording or reproducing using self-clocking codes
    • G11B20/1403Digital recording or reproducing using self-clocking codes characterised by the use of two levels
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10Digital recording or reproducing
    • G11B20/14Digital recording or reproducing using self-clocking codes
    • G11B20/1403Digital recording or reproducing using self-clocking codes characterised by the use of two levels
    • G11B20/1407Digital 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
    • G11B20/1419Digital 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
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00Modulated-carrier systems
    • H04L27/10Frequency-modulated carrier systems, i.e. using frequency-shift keying
    • H04L27/14Demodulator circuits; Receiver circuits
    • H04L27/156Demodulator circuits; Receiver circuits with demodulation using temporal properties of the received signal, e.g. detecting pulse width
    • H04L27/1563Demodulator circuits; Receiver circuits with demodulation using temporal properties of the received signal, e.g. detecting pulse width using transition or level detection
AT00302462T 1999-03-30 2000-03-27 Datendemodulationsverfahren und -gerät für magnetische karte. AT383645T (de)

Priority Applications (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
AT383645T true AT383645T (de) 2008-01-15

Family

ID=27305725

Family Applications (1)

Application Number Title Priority Date Filing Date
AT00302462T AT383645T (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) AT383645T (de)
DE (1) DE60037698D1 (de)

Families Citing this family (9)

* 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
GB2462394B (en) * 2007-06-15 2013-04-03 Shell Int Research Method for monitoring the working consitions of a reciprocating compressor
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

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0127618B2 (de) * 1981-05-08 1989-05-30 Seiko Epson Corp
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
EP1041556A3 (de) 2001-05-02
US6757342B1 (en) 2004-06-29
DE60037698D1 (de) 2008-02-21
EP1041556A2 (de) 2000-10-04
EP1041556B1 (de) 2008-01-09

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Legal Events

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