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FR2299694A1 - Dispositif d'acces aux pistes d'un milieu d'enregistrement tel qu'un disque magnetique - Google Patents

Dispositif d'acces aux pistes d'un milieu d'enregistrement tel qu'un disque magnetique

Info

Publication number
FR2299694A1
FR2299694A1 FR7539631A FR7539631A FR2299694A1 FR 2299694 A1 FR2299694 A1 FR 2299694A1 FR 7539631 A FR7539631 A FR 7539631A FR 7539631 A FR7539631 A FR 7539631A FR 2299694 A1 FR2299694 A1 FR 2299694A1
Authority
FR
France
Prior art keywords
tracks
accessing
recording medium
magnetic disc
disc
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.)
Granted
Application number
FR7539631A
Other languages
English (en)
Other versions
FR2299694B1 (fr
Inventor
Robert E Jansen
Warren A Lopour
Lawrence P Segar
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.)
International Business Machines Corp
Original Assignee
International Business Machines 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 International Business Machines Corp filed Critical International Business Machines Corp
Publication of FR2299694A1 publication Critical patent/FR2299694A1/fr
Application granted granted Critical
Publication of FR2299694B1 publication Critical patent/FR2299694B1/fr
Granted 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
    • G11B20/10203—Improvement or modification of read or write signals filtering or equalising, e.g. setting the tap weights of an FIR filter baseline correction
    • 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

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Recording Or Reproducing By Magnetic Means (AREA)
  • Moving Of The Head To Find And Align With The Track (AREA)
  • Digital Magnetic Recording (AREA)
  • Control Of Position Or Direction (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
FR7539631A 1975-01-31 1975-12-18 Dispositif d'acces aux pistes d'un milieu d'enregistrement tel qu'un disque magnetique Granted FR2299694A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US54606675A 1975-01-31 1975-01-31

Publications (2)

Publication Number Publication Date
FR2299694A1 true FR2299694A1 (fr) 1976-08-27
FR2299694B1 FR2299694B1 (fr) 1978-05-12

Family

ID=24178721

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7539631A Granted FR2299694A1 (fr) 1975-01-31 1975-12-18 Dispositif d'acces aux pistes d'un milieu d'enregistrement tel qu'un disque magnetique

Country Status (6)

Country Link
US (1) US4152736A (fr)
JP (1) JPS5856169B2 (fr)
DE (1) DE2601448A1 (fr)
FR (1) FR2299694A1 (fr)
GB (1) GB1533322A (fr)
IT (1) IT1051882B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0194641A2 (fr) * 1985-03-11 1986-09-17 Sony Corporation Servo-système de poursuite de piste pour mémoire à disques

Families Citing this family (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5379333A (en) * 1976-12-24 1978-07-13 Hitachi Ltd Memory unit
JPS5835769A (ja) * 1981-08-24 1983-03-02 Hitachi Ltd 磁気デイスク装置
JPS58115664A (ja) * 1981-12-28 1983-07-09 Seiko Epson Corp 磁気記録再生機構
DE3325353A1 (de) * 1983-07-14 1985-01-24 Honeywell Gmbh Positionssensor
AU576947B2 (en) * 1985-03-08 1988-09-08 Sony Corporation Combination magnetic transducer head
JPH0668893B2 (ja) * 1986-01-23 1994-08-31 日本電信電話株式会社 磁気ヘツドの位置決め制御方式
JP2548426B2 (ja) * 1989-06-02 1996-10-30 松下電器産業株式会社 信号記録／再生装置
US6700732B1 (en) * 1993-07-30 2004-03-02 Washington University Method and apparatus for a vernier magnetic recording head
US5488525A (en) * 1994-08-18 1996-01-30 International Business Machines Corporation Decoupled magnetic head assembly for quarter-inch tape
US5946156A (en) * 1997-03-04 1999-08-31 Imation Corp. Tape servo system and methods, write/read heads, and servo track configurations regarding same
US6195230B1 (en) * 1998-04-27 2001-02-27 Intel Corporation Disk head assembly with multiple read and/or write transducers for improved performance
US6330123B1 (en) 1999-05-28 2001-12-11 Imation Corp. Head assembly having a single pass servo writer
US7724458B2 (en) * 2004-08-09 2010-05-25 Jasim Saleh Al-Azzawi Hard disk drive with selectable reading and writing to/from different platter surfaces
EP1908060A1 (fr) * 2005-07-13 2008-04-09 Konstantinos Pyykkö Ensemble memoire conçu pour des informations numeriques
US9070406B1 (en) 2014-03-10 2015-06-30 Western Digital Technologies, Inc. Disk drive configuring one-dimensional and two-dimensional recording areas based on read element spacing
US9245556B2 (en) * 2014-03-10 2016-01-26 Western Digital Technologies, Inc. Disk drive employing multiple read elements to increase radial band for two-dimensional magnetic recording
US9508362B2 (en) 2014-11-24 2016-11-29 Seagate Technology Llc Write management for interlaced magnetic recording devices
US9601154B2 (en) * 2014-11-24 2017-03-21 Seagate Technology Llc Prioritized random access for magnetic recording
US9747942B2 (en) 2014-11-24 2017-08-29 Seagate Technology Llc Variable written track widths for attribute-based storage
US9842047B2 (en) 2014-11-24 2017-12-12 Seagate Technology Llc Non-sequential write for sequential read back
US9773517B2 (en) 2014-11-24 2017-09-26 Seagate Technology Llc Dual writer head design
US9818445B2 (en) 2016-01-12 2017-11-14 Seagate Technology Llc Magnetic storage device readers
US10210891B1 (en) 2016-01-28 2019-02-19 Seagate Technology Llc Dual writer head design utilizing two writers of different sizes for writing interlaced data tracks
US9805741B1 (en) 2016-01-29 2017-10-31 Seagate Technology Llc Write current parameter selection for magnetic recording
US9805744B1 (en) 2016-04-01 2017-10-31 Seagate Technology Llc Dual writer design in interlaced magnetic recording
US10199066B1 (en) 2018-03-01 2019-02-05 Seagate Technology Llc Write management of physically coupled storage areas

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1597741A (fr) * 1968-12-09 1970-06-29

Family Cites Families (2)

* 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
US3781490A (en) * 1973-06-01 1973-12-25 Ibm Web tension and speed control in a reel-to-reel web transport

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1597741A (fr) * 1968-12-09 1970-06-29

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
*REVUE US: "IBM TECHNICAL DISCLOSURE BULLETIN" *
REVUE US: "IBM TECHNICAL DISCLOSURE BULLETIN" *
VOLUME 15, NO.4, SEPTEMBRE 1972. ARTICLE: "SERVO CONTROL OF MULTIELEMENT MAGNETIC HEADS"PAGES 1320 A 1321 ZIMMERMANN & ZUEHLKE *
VOLUME 17, NO.5,OCTOBRE 1974. ARTICLE: "ACCESSING TECHNIQUE FOR MAGNETIC DISKS" ELLIOTT PAGES 1464-1465. *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0194641A2 (fr) * 1985-03-11 1986-09-17 Sony Corporation Servo-système de poursuite de piste pour mémoire à disques
EP0194641A3 (fr) * 1985-03-11 1987-11-11 Sony Corporation Servo-système de poursuite de piste pour mémoire à disques

Also Published As

Publication number Publication date
JPS5856169B2 (ja) 1983-12-13
FR2299694B1 (fr) 1978-05-12
JPS5190807A (fr) 1976-08-09
US4152736A (en) 1979-05-01
IT1051882B (it) 1981-05-20
GB1533322A (en) 1978-11-22
DE2601448A1 (de) 1976-08-05

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Legal Events

Date Code Title Description
ST Notification of lapse