DE2601448A1 - Magnetischer datenspeicher mit beweglichen koepfen - Google Patents

Magnetischer datenspeicher mit beweglichen koepfen

Info

Publication number
DE2601448A1
DE2601448A1 DE19762601448 DE2601448A DE2601448A1 DE 2601448 A1 DE2601448 A1 DE 2601448A1 DE 19762601448 DE19762601448 DE 19762601448 DE 2601448 A DE2601448 A DE 2601448A DE 2601448 A1 DE2601448 A1 DE 2601448A1
Authority
DE
Germany
Prior art keywords
servo
tracks
heads
magnetic
data
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.)
Withdrawn
Application number
DE19762601448
Other languages
German (de)
English (en)
Inventor
Robert Edward Jansen
Warren Anthony Lopour
Lawrence Peter 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 DE2601448A1 publication Critical patent/DE2601448A1/de
Withdrawn legal-status Critical Current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)
  • Moving Of The Head To Find And Align With The Track (AREA)
  • Recording Or Reproducing By Magnetic Means (AREA)
  • Control Of Position Or Direction (AREA)
  • Digital Magnetic Recording (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
DE19762601448 1975-01-31 1976-01-16 Magnetischer datenspeicher mit beweglichen koepfen Withdrawn DE2601448A1 (de)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
DE2601448A1 true DE2601448A1 (de) 1976-08-05

Family

ID=24178721

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19762601448 Withdrawn DE2601448A1 (de) 1975-01-31 1976-01-16 Magnetischer datenspeicher mit beweglichen koepfen

Country Status (6)

Country Link
US (1) US4152736A (US07655688-20100202-C00086.png)
JP (1) JPS5856169B2 (US07655688-20100202-C00086.png)
DE (1) DE2601448A1 (US07655688-20100202-C00086.png)
FR (1) FR2299694A1 (US07655688-20100202-C00086.png)
GB (1) GB1533322A (US07655688-20100202-C00086.png)
IT (1) IT1051882B (US07655688-20100202-C00086.png)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3231248A1 (de) * 1981-08-24 1983-03-10 Hitachi, Ltd., Tokyo Nachlaufservosystem fuer magnetische, flexible magnetplatten verwendende aufzeichnungs- und wiedergabegeraete
EP0400678A2 (en) * 1989-06-02 1990-12-05 Matsushita Electric Industrial Co., Ltd. Signal recording/reproducing apparatus

Families Citing this family (25)

* 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
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
US4701815A (en) * 1985-03-11 1987-10-20 Sony Corporation Tracking servo system for disc memory
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
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
WO2007008170A1 (en) * 2005-07-13 2007-01-18 Pyykkoe Konstantinos For digital information adapted memory arrangement
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
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
US9842047B2 (en) 2014-11-24 2017-12-12 Seagate Technology Llc Non-sequential write for sequential read back
US9747942B2 (en) 2014-11-24 2017-08-29 Seagate Technology Llc Variable written track widths for attribute-based storage
US9601154B2 (en) 2014-11-24 2017-03-21 Seagate Technology Llc Prioritized random access for magnetic recording
US9773517B2 (en) 2014-11-24 2017-09-26 Seagate Technology Llc Dual writer head design
US9508362B2 (en) 2014-11-24 2016-11-29 Seagate Technology Llc Write management for interlaced magnetic recording devices
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

Family Cites Families (3)

* 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
FR1597741A (US07655688-20100202-C00086.png) * 1968-12-09 1970-06-29
US3781490A (en) * 1973-06-01 1973-12-25 Ibm Web tension and speed control in a reel-to-reel web transport

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3231248A1 (de) * 1981-08-24 1983-03-10 Hitachi, Ltd., Tokyo Nachlaufservosystem fuer magnetische, flexible magnetplatten verwendende aufzeichnungs- und wiedergabegeraete
EP0400678A2 (en) * 1989-06-02 1990-12-05 Matsushita Electric Industrial Co., Ltd. Signal recording/reproducing apparatus
EP0400678A3 (en) * 1989-06-02 1991-01-23 Matsushita Electric Industrial Co., Ltd. Signal recording/reproducing apparatus
US5057945A (en) * 1989-06-02 1991-10-15 Matsushita Electric Industrial Co., Ltd. Signal recording/reproducing apparatus

Also Published As

Publication number Publication date
GB1533322A (en) 1978-11-22
FR2299694A1 (fr) 1976-08-27
FR2299694B1 (US07655688-20100202-C00086.png) 1978-05-12
JPS5856169B2 (ja) 1983-12-13
JPS5190807A (US07655688-20100202-C00086.png) 1976-08-09
US4152736A (en) 1979-05-01
IT1051882B (it) 1981-05-20

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Legal Events

Date Code Title Description
8139 Disposal/non-payment of the annual fee