DE3231248C2 - - Google Patents

Info

Publication number
DE3231248C2
DE3231248C2 DE3231248A DE3231248A DE3231248C2 DE 3231248 C2 DE3231248 C2 DE 3231248C2 DE 3231248 A DE3231248 A DE 3231248A DE 3231248 A DE3231248 A DE 3231248A DE 3231248 C2 DE3231248 C2 DE 3231248C2
Authority
DE
Germany
Prior art keywords
track
data
servo
head
tracking
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
DE3231248A
Other languages
German (de)
English (en)
Other versions
DE3231248A1 (de
Inventor
Tadashi Saito
Shigemitsu Yokohama Jp Higuchi
Kazutoshi Yokosuka Jp Konno
Tohru Kanagawa Jp Sampei
Kenji Kamakura Jp Hayashi
Yoshihiko Noro
Manabu Yokohama Jp Wakabayashi
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.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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 Hitachi Ltd filed Critical Hitachi Ltd
Publication of DE3231248A1 publication Critical patent/DE3231248A1/de
Application granted granted Critical
Publication of DE3231248C2 publication Critical patent/DE3231248C2/de
Granted legal-status Critical Current

Links

Classifications

    • 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
    • G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
    • G11B5/54—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head into or out of its operative position or across tracks
    • G11B5/55—Track change, selection or acquisition by displacement of the head
    • G11B5/5521—Track change, selection or acquisition by displacement of the head across disk tracks
    • 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
    • G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
    • G11B5/58—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G11B5/596—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following for track following on disks
    • G11B5/59633—Servo formatting

Landscapes

  • Moving Of The Head To Find And Align With The Track (AREA)
  • Adjustment Of The Magnetic Head Position Track Following On Tapes (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
DE19823231248 1981-08-24 1982-08-23 Nachlaufservosystem fuer magnetische, flexible magnetplatten verwendende aufzeichnungs- und wiedergabegeraete Granted DE3231248A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56131501A JPS5835769A (ja) 1981-08-24 1981-08-24 磁気デイスク装置

Publications (2)

Publication Number Publication Date
DE3231248A1 DE3231248A1 (de) 1983-03-10
DE3231248C2 true DE3231248C2 (US07655688-20100202-C00086.png) 1987-10-08

Family

ID=15059486

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19823231248 Granted DE3231248A1 (de) 1981-08-24 1982-08-23 Nachlaufservosystem fuer magnetische, flexible magnetplatten verwendende aufzeichnungs- und wiedergabegeraete

Country Status (3)

Country Link
US (1) US4551777A (US07655688-20100202-C00086.png)
JP (1) JPS5835769A (US07655688-20100202-C00086.png)
DE (1) DE3231248A1 (US07655688-20100202-C00086.png)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4513333A (en) * 1982-02-24 1985-04-23 Dymek Corporation Diagnostic recording
JPS59112406A (ja) * 1982-12-17 1984-06-28 Sony Corp Ｐｃｍ信号の記録再生方法
JPS60163214A (ja) * 1984-02-03 1985-08-26 Canon Electronics Inc 磁気ヘツド及びその製造方法
DE3714986A1 (de) * 1987-05-06 1988-11-17 Thomson Brandt Gmbh Recorder mit spurfuehrung
US5001579A (en) * 1988-05-27 1991-03-19 Eastman Kodak Company Method and apparatus for centering a transducer over a recorded track on a rotary storage medium
US5245487A (en) * 1989-01-27 1993-09-14 International Business Machines Corporation Transducer head for rigid disk drive
US5285331A (en) * 1989-02-23 1994-02-08 Wangtek Incorporated System for aligning a read head gap over a track of magnetic data
US5568331A (en) * 1989-10-27 1996-10-22 Hitachi, Ltd. Method of head positioning and magnetic recording disk drive using the same
US6028731A (en) * 1996-03-29 2000-02-22 Bond; Charles R. Method and system for providing servo signals to a magnetic head positioning system of disk drive
US5966264A (en) * 1997-08-07 1999-10-12 International Business Machines Cororation Two frequency servo PES pattern
US6025970A (en) * 1997-08-07 2000-02-15 International Business Machines Corporation Digital demodulation of a complementary two-frequency servo PES pattern
BR0012628A (pt) * 1999-06-28 2002-04-02 Matsushita Electric Ind Co Ltd Gravador de videoteipe
JP2002373411A (ja) 2001-06-15 2002-12-26 Fuji Photo Film Co Ltd 磁気記録媒体およびその駆動装置
JP2003115177A (ja) * 2001-10-02 2003-04-18 Mitsumi Electric Co Ltd フレキシブルディスクドライブ制御方法
JP3776797B2 (ja) * 2001-12-28 2006-05-17 株式会社東芝 磁気記録再生装置
US7499235B2 (en) * 2005-03-18 2009-03-03 Quantum Corporation Auto-servo tape system and associated recording head
US7760465B2 (en) 2005-10-25 2010-07-20 International Business Machines Corporation Magnetic head having selectively defined reader gap thicknesses
US7826169B2 (en) 2007-04-25 2010-11-02 Quantum Corporation Servo error detection and compensation utilizing virtual data tracking servo methods
GB2518677A (en) 2013-09-30 2015-04-01 Ibm Tape storage medium

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3263031A (en) * 1962-05-29 1966-07-26 Sperry Rand Corp High-low frequency homing
US3292168A (en) * 1962-08-13 1966-12-13 Sperry Rand Corp High resolution, head positioner system
US3491347A (en) * 1967-03-20 1970-01-20 North American Rockwell Servo system for positioning transducers at track locations
US3691543A (en) * 1971-02-08 1972-09-12 Ibm Positioning system including servo track configuration and associated demodulator
JPS5620622B2 (US07655688-20100202-C00086.png) * 1972-12-14 1981-05-14
CA1067997A (en) * 1974-07-15 1979-12-11 Jacob De Boer Servo system for controlling the position of a reading head
DE2439546A1 (de) * 1974-08-17 1976-02-26 Basf Ag Spurlageregelung bei magnetodynamischen speichern sowie magnetogrammtraeger dafuer
FR2299694A1 (fr) * 1975-01-31 1976-08-27 Ibm Dispositif d'acces aux pistes d'un milieu d'enregistrement tel qu'un disque magnetique
US4007493A (en) * 1975-05-06 1977-02-08 Burroughs Corporation Track positioning system for magnetic transducer head
NL7702815A (nl) * 1977-03-16 1978-09-19 Philips Nv Werkwijze voor het regelen van de positie van een schrijf- respektievelijk leeskop en een inrichting voor het uitvoeren van de werkwijze.
US4164781A (en) * 1978-04-11 1979-08-14 Decitek Track servoing system using signals from tunnel erase heads
JPS5564622A (en) * 1978-11-06 1980-05-15 Fujitsu Ltd Magnetic head

Also Published As

Publication number Publication date
JPS5835769A (ja) 1983-03-02
DE3231248A1 (de) 1983-03-10
US4551777A (en) 1985-11-05

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Legal Events

Date Code Title Description
OP8 Request for examination as to paragraph 44 patent law
8125 Change of the main classification

Ipc: G11B 21/06

D2 Grant after examination
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee