GB1293113A - Magnetic recording system - Google Patents

Magnetic recording system

Info

Publication number
GB1293113A
GB1293113A GB25650/71A GB2565071A GB1293113A GB 1293113 A GB1293113 A GB 1293113A GB 25650/71 A GB25650/71 A GB 25650/71A GB 2565071 A GB2565071 A GB 2565071A GB 1293113 A GB1293113 A GB 1293113A
Authority
GB
United Kingdom
Prior art keywords
write
output transistor
current signal
transition
write current
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
Application number
GB25650/71A
Other languages
English (en)
Inventor
Juan A Rodriguez
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.)
Storage Technology Corp
Original Assignee
Storage Technology 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
Application filed by Storage Technology Corp filed Critical Storage Technology Corp
Publication of GB1293113A publication Critical patent/GB1293113A/en
Expired 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
    • G11B20/10046—Improvement or modification of read or write signals filtering or equalising, e.g. setting the tap weights of an FIR filter
    • G11B20/10194—Improvement or modification of read or write signals filtering or equalising, e.g. setting the tap weights of an FIR filter using predistortion during writing
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/02—Recording, reproducing, or erasing methods; Read, write or erase circuits therefor
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/16—Modifications for eliminating interference voltages or currents
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B2005/0002—Special dispositions or recording techniques
    • G11B2005/0005—Arrangements, methods or circuits
    • G11B2005/001—Controlling recording characteristics of record carriers or transducing characteristics of transducers by means not being part of their structure

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Digital Magnetic Recording (AREA)
  • Dc Digital Transmission (AREA)
GB25650/71A 1970-03-13 1971-04-19 Magnetic recording system Expired GB1293113A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US1915670A 1970-03-13 1970-03-13

Publications (1)

Publication Number Publication Date
GB1293113A true GB1293113A (en) 1972-10-18

Family

ID=21791728

Family Applications (1)

Application Number Title Priority Date Filing Date
GB25650/71A Expired GB1293113A (en) 1970-03-13 1971-04-19 Magnetic recording system

Country Status (5)

Country Link
US (1) US3618119A (enExample)
JP (1) JPS5434325B1 (enExample)
DE (1) DE2111744C3 (enExample)
FR (1) FR2084542A5 (enExample)
GB (1) GB1293113A (enExample)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3763383A (en) * 1972-08-21 1973-10-02 Ibm Drive circuit for inductive device
US4015290A (en) * 1975-07-31 1977-03-29 Sangamo Electric Company Low power recording instrument with two or more tracks
DE3112893A1 (de) * 1981-03-31 1982-11-25 Tandberg Data A/S, Oslo Verfahren zur magnetischen aufzeichnung von codierten digitalen informationssignalen auf einem magnetischen aufzeichnungstraeger und einrichtung zur durchfuehrung des verfahrens
JPS5829110A (ja) * 1981-08-17 1983-02-21 Hitachi Denshi Ltd デイジタル信号の磁気記録方法
JPH0610845B2 (ja) * 1984-02-18 1994-02-09 ティアツク株式会社 デジタル磁気記録再生装置
DE3533447A1 (de) * 1985-09-19 1987-03-26 Tandberg Data Verfahren und anordnung zum aufzeichnen von daten auf einem magnetischen aufzeichnungstraeger
US5168395A (en) * 1990-05-02 1992-12-01 International Business Machines Corporation Controlled magnetic recording head relaxation in a magnetic recording system
JP2990889B2 (ja) * 1991-09-27 1999-12-13 日本電気株式会社 磁気ヘッドドライブ回路
JP2519798Y2 (ja) * 1991-12-24 1996-12-11 ティアック株式会社 デイジタル記録回路
JP3211999B2 (ja) * 1992-06-26 2001-09-25 キヤノン株式会社 光磁気記録装置
JP2994522B2 (ja) * 1993-02-22 1999-12-27 富士通株式会社 磁気抵抗素子用プリアンプ
US5426537A (en) * 1993-06-30 1995-06-20 Ampex Corporation Method and apparatus for automatically adjusting the overshoot of a record head in response to the record head gap depth
US5357379A (en) * 1993-07-02 1994-10-18 Exar Corporation Read/write circuit with switchable head resistance for read and write modes
KR0166157B1 (ko) * 1995-12-27 1999-03-20 김광호 자기 기록장치의 기록전류 제어회로 및 방법
US5856891A (en) * 1997-01-22 1999-01-05 Vtc Inc. MR resistive-biasing scheme providing low noise high common-mode rejection and high supply rejection
US6301068B1 (en) * 1998-07-02 2001-10-09 Seagate Technology Llc Programmable write current waveform for high frequency magnetic recording
US6222695B1 (en) 1998-08-10 2001-04-24 Siemens Microelectronics, Inc. System and method for a preamplifier write circuit with reduced rise/fall time

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3163804A (en) * 1961-03-01 1964-12-29 Jersey Prod Res Co Circuit for driving a center tapped head winding
GB1077882A (en) * 1965-01-08 1967-08-02 Decca Ltd Improvements in or relating to magnetic recording head circuits
US3503059A (en) * 1967-03-22 1970-03-24 Ibm Pulse crowding compensation for magnetic recording
US3512171A (en) * 1967-08-17 1970-05-12 Burroughs Corp Drive circuitry for high frequency digital recording

Also Published As

Publication number Publication date
FR2084542A5 (enExample) 1971-12-17
DE2111744A1 (de) 1971-11-25
JPS5434325B1 (enExample) 1979-10-26
US3618119A (en) 1971-11-02
DE2111744C3 (de) 1981-09-24
DE2111744B2 (de) 1980-12-18

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee