DE68921236D1 - Magnetische Aufzeichnungsplatte mit eingebetteter Servo-Information. - Google Patents
Magnetische Aufzeichnungsplatte mit eingebetteter Servo-Information.Info
- Publication number
- DE68921236D1 DE68921236D1 DE68921236T DE68921236T DE68921236D1 DE 68921236 D1 DE68921236 D1 DE 68921236D1 DE 68921236 T DE68921236 T DE 68921236T DE 68921236 T DE68921236 T DE 68921236T DE 68921236 D1 DE68921236 D1 DE 68921236D1
- Authority
- DE
- Germany
- Prior art keywords
- magnetic recording
- servo information
- recording disc
- embedded servo
- embedded
- 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 - Fee Related
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
- G11B5/74—Record carriers characterised by the form, e.g. sheet shaped to wrap around a drum
- G11B5/82—Disk carriers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y10/00—Nanotechnology for information processing, storage or transmission, e.g. quantum computing or single electron logic
-
- 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
- G11B5/5965—Embedded servo format
-
- 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
- G11B5/74—Record carriers characterised by the form, e.g. sheet shaped to wrap around a drum
- G11B5/743—Patterned record carriers, wherein the magnetic recording layer is patterned into magnetic isolated data islands, e.g. discrete tracks
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Nanotechnology (AREA)
- Physics & Mathematics (AREA)
- Mathematical Physics (AREA)
- Theoretical Computer Science (AREA)
- Crystallography & Structural Chemistry (AREA)
- 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)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/187,157 US4912585A (en) | 1988-04-28 | 1988-04-28 | Discrete track thin film magnetic recording disk with embedded servo information |
Publications (2)
Publication Number | Publication Date |
---|---|
DE68921236D1 true DE68921236D1 (de) | 1995-03-30 |
DE68921236T2 DE68921236T2 (de) | 1995-08-10 |
Family
ID=22687822
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE68921236T Expired - Fee Related DE68921236T2 (de) | 1988-04-28 | 1989-04-18 | Magnetische Aufzeichnungsplatte mit eingebetteter Servo-Information. |
Country Status (4)
Country | Link |
---|---|
US (1) | US4912585A (de) |
EP (1) | EP0339851B1 (de) |
JP (1) | JPH0646486B2 (de) |
DE (1) | DE68921236T2 (de) |
Families Citing this family (55)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE69032626T2 (de) * | 1989-01-11 | 1999-05-20 | Hitachi, Ltd., Tokio/Tokyo | Verfahren zum magnetischen Aufzeichnen und Wiedergeben von Daten, magnetischer Auzeichnungsträger, sein Herstellungsverfahren und Gerät zur magnetischen Aufzeichnung |
JP2863190B2 (ja) * | 1989-03-24 | 1999-03-03 | ソニー株式会社 | 磁気ディスクの作製方法 |
US5235478A (en) * | 1989-12-15 | 1993-08-10 | Sony Corporation | Disc drive apparatus with servo tracks offset from data tracks |
US5170299A (en) * | 1990-08-17 | 1992-12-08 | Quantum Corporation | Edge servo for disk drive head positioner |
JPH0512628A (ja) * | 1991-07-02 | 1993-01-22 | Sony Corp | 複合型薄膜ヘツド |
US5418670A (en) * | 1991-07-29 | 1995-05-23 | Eastman Kodak Company | Magnetic recording medium having a servo pattern of the intermittent type with compensation for suppressing self-generated residual fields |
JP3237141B2 (ja) * | 1991-09-20 | 2001-12-10 | ソニー株式会社 | ハードディスクドライブ装置 |
JP3344495B2 (ja) * | 1993-03-04 | 2002-11-11 | ソニー株式会社 | 磁気ディスク装置 |
US5774297A (en) * | 1996-03-26 | 1998-06-30 | Seagate Technology, Inc. | Dynamic compensation of servo burst measurement offsets in a disc drive |
US6104579A (en) * | 1996-04-11 | 2000-08-15 | Sony Corporation | Magnetic disk head having data zone and control signal zones which generate different lifts when flown over by a head slider |
TW342495B (en) | 1996-07-22 | 1998-10-11 | Matsushita Electric Ind Co Ltd | Master information carrier, method of producing the same, and method for recording master information signal on magnetic recording medium |
US5870243A (en) * | 1996-08-28 | 1999-02-09 | Seagate Technology, Inc. | Servo frame defect mapping in a hard disc drive |
US6456449B1 (en) | 1997-08-07 | 2002-09-24 | International Business Machines Corporation | Disk drive with wide servo burst pattern and wide servo sensing element |
JP3329259B2 (ja) | 1998-03-20 | 2002-09-30 | 松下電器産業株式会社 | マスター情報担体、および、磁気記録媒体の製造方法 |
JP3361740B2 (ja) | 1998-03-23 | 2003-01-07 | 松下電器産業株式会社 | マスター情報磁気記録装置及び磁気記録媒体の製造方法 |
CN1149542C (zh) | 1998-10-29 | 2004-05-12 | 松下电器产业株式会社 | 主信息载体和使用了主信息载体的磁记录媒体的制造方法 |
WO2000051111A1 (en) | 1999-02-22 | 2000-08-31 | Seagate Technology Llc | Buried servo patterned media |
US6754017B2 (en) | 2001-10-26 | 2004-06-22 | Hitachi Global Storage Technologies, Netherlands B.V. | Patterned media magnetic recording disk drive with timing of write pulses by sensing the patterned media |
JP2005004917A (ja) * | 2003-06-13 | 2005-01-06 | Hitachi Ltd | 垂直磁気記録媒体及び磁気ディスク装置 |
US7102839B2 (en) * | 2003-10-31 | 2006-09-05 | International Business Machines Corporation | Magnetic recording channel utilizing control fields for timing recovery, equalization, amplitude and amplitude asymmetry |
US7378028B2 (en) * | 2004-06-03 | 2008-05-27 | Seagate Technology Llc | Method for fabricating patterned magnetic recording media |
JP2006031847A (ja) * | 2004-07-16 | 2006-02-02 | Toshiba Corp | 磁気ディスク媒体及び磁気ディスク装置 |
JP2006031856A (ja) * | 2004-07-16 | 2006-02-02 | Toshiba Corp | 垂直磁気記録用のパターンドディスク媒体及び同媒体を搭載した磁気ディスクドライブ |
JP4358067B2 (ja) | 2004-08-06 | 2009-11-04 | 株式会社東芝 | 磁気記録媒体および磁気記録装置 |
JP2006099932A (ja) * | 2004-09-03 | 2006-04-13 | Tdk Corp | 磁気記録媒体、磁気記録再生装置及び磁気記録媒体製造用スタンパ |
US7161753B2 (en) * | 2005-01-28 | 2007-01-09 | Komag, Inc. | Modulation of sidewalls of servo sectors of a magnetic disk and the resultant disk |
JP4134066B2 (ja) * | 2005-02-24 | 2008-08-13 | 富士通株式会社 | ヘッド位置検出方法および記録媒体駆動装置 |
JP4649262B2 (ja) | 2005-04-19 | 2011-03-09 | 株式会社東芝 | 磁気記録媒体の製造方法 |
US7771852B2 (en) * | 2005-06-09 | 2010-08-10 | Hitachi Global Storage Technologies Netherlands B.V. | Magnetic recording disk with patterned nondata islands of alternating polarity |
US7236325B2 (en) * | 2005-06-09 | 2007-06-26 | Hitachi Global Storage Technologies Netherlands B.V. | Method for formatting a magnetic recording disk with patterned nondata islands of alternating polarity |
JP4489031B2 (ja) * | 2006-02-17 | 2010-06-23 | 東芝ストレージデバイス株式会社 | ディスク装置補正システム、情報管理装置、原盤作製装置および原盤作製方法 |
JP4585476B2 (ja) | 2006-03-16 | 2010-11-24 | 株式会社東芝 | パターンド媒体および磁気記録装置 |
JP4675812B2 (ja) | 2006-03-30 | 2011-04-27 | 株式会社東芝 | 磁気記録媒体、磁気記録装置および磁気記録媒体の製造方法 |
US20080084634A1 (en) * | 2006-09-22 | 2008-04-10 | Board Of Regents Of The Nevada System Of Higher Education On Behalf Of The University Nevada | Devices and methods for storing data |
US7950587B2 (en) * | 2006-09-22 | 2011-05-31 | The Board of Regents of the Nevada System of Higher Education on behalf of the University of Reno, Nevada | Devices and methods for storing data |
US7652839B2 (en) * | 2007-04-26 | 2010-01-26 | Hitachi Global Storage Technologies Netherlands B.V. | Magnetic recording disk with identical servo patterns formed on each disk surface by single master template and disk drive using the disk |
JP2008282512A (ja) | 2007-05-14 | 2008-11-20 | Toshiba Corp | 磁気記録媒体及び磁気記録再生装置 |
US7466506B1 (en) | 2007-06-19 | 2008-12-16 | Hitachi Global Storage Technologies Netherlands B.V. | Magnetic recording disk drive with head positioning servo control system for disk surfaces with identical servo patterns |
KR100900201B1 (ko) * | 2007-07-04 | 2009-06-02 | 삼성전자주식회사 | 자기기록매체, 이를 채용하는 하드디스크 드라이브 및하드디스크 드라이브의 wr 오프셋 측정방법 |
KR100924698B1 (ko) * | 2007-07-24 | 2009-11-03 | 삼성전자주식회사 | 자기기록장치 |
US7848039B2 (en) * | 2007-08-11 | 2010-12-07 | Hitachi Global Storage Technologies Netherlands B.V. | Magnetic recording disk and disk drive with patterned phase-type servo fields for read/write head positioning |
US7848040B2 (en) * | 2007-08-17 | 2010-12-07 | Hitachi Global Storage Technologies Netherlands B.V. | Magnetic recording disk and disk drive with amplitude-type servo fields having patterned alternating-polarity servo islands for read/write head positioning |
JP4382843B2 (ja) | 2007-09-26 | 2009-12-16 | 株式会社東芝 | 磁気記録媒体およびその製造方法 |
US7729073B2 (en) * | 2007-10-12 | 2010-06-01 | Hitachi Global Storage Technologies Netherlands B.V. | Magnetic recording disk and disk drive with amplitude-type servo fields having patterned servo islands for read/write head positioning |
US7612961B2 (en) * | 2007-10-12 | 2009-11-03 | Hitachi Global Storage Technologies Netherlands B.V. | Magnetic recording disk and disk drive with patterned phase-type servo fields for read/write head positioning |
US7944643B1 (en) | 2007-12-05 | 2011-05-17 | Wd Media, Inc. | Patterns for pre-formatted information on magnetic hard disk media |
KR20090059848A (ko) * | 2007-12-07 | 2009-06-11 | 삼성전자주식회사 | 패턴 자기기록매체 및 패턴 자기기록매체에 트랙 정보를기록하는 방법 |
US8338006B2 (en) * | 2008-06-10 | 2012-12-25 | Hitachi Global Storage Technologies Netherlands B.V. | Magnetic recording disk having pre-patterned surface features and planarized surface |
US20100073808A1 (en) * | 2008-09-23 | 2010-03-25 | Seagate Technology Llc | Position sensing in discrete track recording |
US7986488B2 (en) * | 2008-12-04 | 2011-07-26 | Hitachi Global Storage Technologies Netherlands B.V. | Magnetic recording disk and disk drive with alternating single-polarity position error signal (PES) blocks for read/write head positioning |
US8077424B2 (en) * | 2009-05-28 | 2011-12-13 | Seagate Technology, Llc | Transducer design with a sensor close to write pole |
US20110051286A1 (en) * | 2009-09-01 | 2011-03-03 | Seagate Technology Llc | Writing data on alternating magnetic and nonmagnetic stripes of a servo pattern |
US8345368B2 (en) | 2010-12-15 | 2013-01-01 | Seagate Technology Llc | Bipolar position error bursts with unipolar servo fields |
CN102855886B (zh) * | 2011-06-30 | 2015-07-08 | 大银微***股份有限公司 | 在磁带上形成位置参考讯号磁区的加工方法 |
US9418684B2 (en) * | 2013-10-04 | 2016-08-16 | Seagate Technology Llc | Magnetic read head with separately addressable read transducers |
Family Cites Families (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2797402A (en) * | 1955-05-09 | 1957-06-25 | Teleregister Corp | Means for generating synchronizing pulses for magnetic storage devices |
US3185972A (en) * | 1961-10-10 | 1965-05-25 | Ibm | Transducer positioning system utilizing record with interspersed data and positioning information |
US3593331A (en) * | 1969-01-31 | 1971-07-13 | Ncr Co | Magnetic disc calibration track with diminishing apertures |
NL7212002A (de) * | 1972-09-02 | 1974-03-05 | ||
US3864754A (en) * | 1973-05-02 | 1975-02-04 | Minnesota Mining & Mfg | Magnetic record medium having permanent record pattern and information processing system using said medium |
US4157576A (en) * | 1974-08-17 | 1979-06-05 | Basf Aktiengesellschaft | Track-dependent transducer position control in magneto-dynamic storage devices, and a magnetic recording medium to which this method is applicable |
GB1443248A (en) * | 1974-08-29 | 1976-07-21 | Burroughs Corp | making same |
DE2615838C2 (de) * | 1976-04-10 | 1985-02-07 | Philips Patentverwaltung Gmbh, 2000 Hamburg | Vorrichtung zur Positionsregelung eines Schreib-Lesekopfes für Datenträger mit einer Magnetspeicherschicht |
GB2039078B (en) * | 1978-12-27 | 1982-11-24 | Ibm | Sampled data servo positioning system |
JPS55125536A (en) * | 1979-03-16 | 1980-09-27 | Fuji Photo Film Co Ltd | Recording medium for vertical magnetic record |
JPS55139667A (en) * | 1979-04-18 | 1980-10-31 | Mitsubishi Electric Corp | Disk unit |
JPS56148734A (en) * | 1980-04-16 | 1981-11-18 | Matsushita Electric Ind Co Ltd | Magnetic disc |
USRE32075E (en) * | 1980-09-24 | 1986-01-28 | Quantum Corporation | Data transducer position control system for rotating disk data storage equipment |
JPS59500391A (ja) * | 1982-05-17 | 1984-03-08 | インタ−ナシヨナル・ビジネス・マシ−ンズ・コ−ポレ−シヨン | セクタ.サ−ボ探索制御装置 |
JPS58212624A (ja) * | 1982-06-04 | 1983-12-10 | Fujitsu Ltd | 磁気デイスク |
EP0097209B1 (de) * | 1982-06-18 | 1987-11-04 | International Business Machines Corporation | Magnetische Aufzeichnungsplatte und Magnetplattenvorrichtung unter Verwendung eines Servosektors für Kopfpositionierung |
JPS5933626A (ja) * | 1982-08-17 | 1984-02-23 | Sony Corp | 磁気デイスク |
US4746580A (en) * | 1983-03-31 | 1988-05-24 | International Business Machines Corporation | Read-only magnetic recording media |
US4642709A (en) * | 1985-10-16 | 1987-02-10 | International Business Machines Corporation | Twin track vertical magnetic recording servo control method |
US4802050A (en) * | 1986-02-21 | 1989-01-31 | Brother Kogyo Kabushiki Kaisha | Magnetic recording medium |
US4669003A (en) * | 1986-05-02 | 1987-05-26 | Hewlett-Packard Company | Method and apparatus for eliminating apparent offset in the servo code in a magnetic disc drive |
US4805065A (en) * | 1986-10-29 | 1989-02-14 | Eastman Kodak Company | Particulate magnetic recording media having an areally controlled recording characteristics |
-
1988
- 1988-04-28 US US07/187,157 patent/US4912585A/en not_active Expired - Fee Related
-
1989
- 1989-02-20 JP JP1038544A patent/JPH0646486B2/ja not_active Expired - Lifetime
- 1989-04-18 EP EP89303820A patent/EP0339851B1/de not_active Expired - Lifetime
- 1989-04-18 DE DE68921236T patent/DE68921236T2/de not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
EP0339851A2 (de) | 1989-11-02 |
JPH0646486B2 (ja) | 1994-06-15 |
EP0339851B1 (de) | 1995-02-22 |
DE68921236T2 (de) | 1995-08-10 |
EP0339851A3 (en) | 1989-12-20 |
JPH02146153A (ja) | 1990-06-05 |
US4912585A (en) | 1990-03-27 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE68921236D1 (de) | Magnetische Aufzeichnungsplatte mit eingebetteter Servo-Information. | |
DE68920114D1 (de) | Aufnahmeplattenspeicher. | |
DE68920058D1 (de) | Magnetisches Aufnahme-/Wiedergabegerät. | |
DE3885825D1 (de) | Magnetische Aufzeichnungsträger. | |
DE19882608T1 (de) | Plattenlaufwerk mit Servoinformation mit konstanter Dichte | |
DE3853640D1 (de) | Informationsaufzeichnungsmedium. | |
DE3877106D1 (de) | Signal-aufnahme/wiedergabegeraet mit kassette. | |
DE68920403D1 (de) | Magnetischer Plattenspieler. | |
DE3782570D1 (de) | Magnetplatteneinheit mit einer metallschicht-platte als datenaufzeichnungsmedium. | |
DE3881314D1 (de) | Datenaufzeichnungs-plattendatei mit digitaler nachlaufregelung. | |
DE68921453D1 (de) | Informationsaufzeichnungsträger. | |
DE3586171D1 (de) | Magnetische aufnahme-/wiedergabevorrichtung. | |
GB8515504D0 (en) | Recording information on magnetic disk | |
DE3580635D1 (de) | Magnetisches aufzeichnungsmedium. | |
DE69007261D1 (de) | Langgestreckter magnetischer Aufzeichnungsträger. | |
DE3685470D1 (de) | Laserinformationsaufzeichnungsmedium mit aufzeichnungsschicht. | |
DE59007831D1 (de) | Magnetische Aufzeichnungsträger. | |
DE3575357D1 (de) | Magnetisches aufzeichnungsmedium. | |
DE3585243D1 (de) | Magnetisches aufnahme- oder wiedergabesystem mit zusammengesetztem magnetkopf. | |
DE3681604D1 (de) | Informations-aufzeichnungstraeger-antriebsgeraet. | |
DE68924417D1 (de) | Magnetische aufnahme-/wiedergabevorrichtung. | |
DE69210928D1 (de) | Magnetische Aufzeichnungsplatte | |
DE3851239D1 (de) | Informationsaufnahme- und -wiedergabemethode. | |
DE68923767D1 (de) | Magnetisches Aufzeichnungs-/Wiedergabegerät. | |
DE69020523D1 (de) | Mehrspur-Lesemagnetkopf. |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8339 | Ceased/non-payment of the annual fee |