DE69125447T2 - Verfahren und Vorrichtung zum Positionieren von Wandlern - Google Patents
Verfahren und Vorrichtung zum Positionieren von WandlernInfo
- Publication number
- DE69125447T2 DE69125447T2 DE69125447T DE69125447T DE69125447T2 DE 69125447 T2 DE69125447 T2 DE 69125447T2 DE 69125447 T DE69125447 T DE 69125447T DE 69125447 T DE69125447 T DE 69125447T DE 69125447 T2 DE69125447 T2 DE 69125447T2
- Authority
- DE
- Germany
- Prior art keywords
- positioning transducers
- transducers
- positioning
- 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
- G11B5/48—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
- G11B5/56—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 support for the purpose of adjusting the position of the head relative to the record carrier, e.g. manual adjustment for azimuth correction or track centering
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B21/00—Head arrangements not specific to the method of recording or reproducing
- G11B21/02—Driving or moving of heads
- G11B21/08—Track changing or selecting during transducing operation
- G11B21/081—Access to indexed tracks or parts of continuous track
- G11B21/083—Access to indexed tracks or parts of continuous track on discs
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B21/00—Head arrangements not specific to the method of recording or reproducing
- G11B21/02—Driving or moving of heads
- G11B21/08—Track changing or selecting during transducing operation
-
- 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
- G11B5/488—Disposition of heads
- G11B5/4886—Disposition of heads relative to rotating disc
-
- 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
- G11B5/5526—Control therefor; circuits, track configurations or relative disposition of servo-information transducers and servo-information tracks for control thereof
- G11B5/553—Details
- G11B5/5534—Initialisation, calibration, e.g. cylinder "set-up"
-
- 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
- G11B5/59644—Acquisition or selection of servo format from a system reference
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US59159690A | 1990-10-02 | 1990-10-02 |
Publications (2)
Publication Number | Publication Date |
---|---|
DE69125447D1 DE69125447D1 (de) | 1997-05-07 |
DE69125447T2 true DE69125447T2 (de) | 1997-09-25 |
Family
ID=24367098
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69125447T Expired - Fee Related DE69125447T2 (de) | 1990-10-02 | 1991-09-06 | Verfahren und Vorrichtung zum Positionieren von Wandlern |
Country Status (10)
Country | Link |
---|---|
US (1) | US5682274A (de) |
EP (1) | EP0479703B1 (de) |
JP (1) | JPH04232610A (de) |
KR (1) | KR960015921B1 (de) |
CN (1) | CN1028574C (de) |
DE (1) | DE69125447T2 (de) |
HK (1) | HK1000069A1 (de) |
MY (1) | MY110421A (de) |
SG (1) | SG46192A1 (de) |
TW (1) | TW226467B (de) |
Families Citing this family (30)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5715105A (en) | 1992-09-28 | 1998-02-03 | Hitachi, Ltd. | Method of and apparatus for recording on and reproducing from disk-type recording medium having recording tracks with sectors each having an ID area and a data area |
JP3395235B2 (ja) * | 1993-02-09 | 2003-04-07 | ソニー株式会社 | 情報記録ディスク |
US5444589A (en) * | 1993-12-02 | 1995-08-22 | International Business Machines Corporation | Rotary actuator disk drive with identical dual-element read/write transducers |
KR950020658A (ko) * | 1993-12-07 | 1995-07-24 | 새끼자와 다다시 | 자기디스크장치 |
DE4447813B4 (de) * | 1993-12-07 | 2006-05-24 | Fujitsu Ltd., Kawasaki | Aufzeichnungs-/Wiedergabevorrichtung |
JP3135447B2 (ja) * | 1994-01-27 | 2001-02-13 | 富士通株式会社 | 磁気ディスクドライブの制御方法及びその装置 |
JPH07320247A (ja) * | 1994-05-23 | 1995-12-08 | Internatl Business Mach Corp <Ibm> | Mrヘッド用サーボ方法及びハードディスクシステム |
US5654842A (en) * | 1994-08-30 | 1997-08-05 | Sony Corporation | Head displacement measuring method and apparatus and data recording/reproducing method and apparatus |
US6898035B1 (en) | 1994-12-01 | 2005-05-24 | Hitachi Global Storage Technologies Netherlands B.V. | Method and apparatus for correcting for systematic errors in timing pattern generation |
US6078450A (en) * | 1994-12-01 | 2000-06-20 | International Business Machines Corporation | Method and apparatus for correcting for random errors in timing pattern generation |
US6252732B1 (en) * | 1994-12-01 | 2001-06-26 | International Business Machines Corporation | Method and apparatus for correcting systematic errors in timing pattern generation |
KR19990022303A (ko) * | 1995-06-06 | 1999-03-25 | 칼로타 바스미스 | 자기 저항 헤드 차동 마이크로 조그 |
GB2332523B (en) * | 1997-12-16 | 2002-04-10 | Havant Internat Ltd | Tool,apparatus and method for testing a fixture |
JP3080364B2 (ja) * | 1997-12-25 | 2000-08-28 | インターナショナル・ビジネス・マシーンズ・コーポレ−ション | ディスクドライブ装置、シーク制御装置 |
US6195230B1 (en) | 1998-04-27 | 2001-02-27 | Intel Corporation | Disk head assembly with multiple read and/or write transducers for improved performance |
US6320718B1 (en) * | 1999-01-07 | 2001-11-20 | Western Digital Technologies, Inc. | Disk drive with zero read offset in reserved area and method of making same |
US6545841B1 (en) * | 1999-02-08 | 2003-04-08 | Seagate Technology Llc | Strategy for read/write spacing requirement |
US6765737B1 (en) | 1999-04-21 | 2004-07-20 | Seagate Technology Llc | Variable track densities on a recording medium to compensate for non-repeatable runout (NRRO) error |
US6359749B1 (en) | 1999-10-15 | 2002-03-19 | International Business Machines Corporation | Dual element head with radial offset optimized for minimal write-to-read track error |
WO2001052260A1 (en) * | 2000-01-10 | 2001-07-19 | Seagate Technology Llc | Servo track writing using extended copying with head offset |
US6369969B1 (en) * | 2001-02-28 | 2002-04-09 | Western Digital Technologies, Inc. | Disk drive for detecting a polarity error of a magnetoresistive head by detecting a sync mark |
US7265921B2 (en) * | 2004-02-10 | 2007-09-04 | Hitachi Global Storage Technologies Netherlands B.V. | Method to increase the amount of customer data on a hard disk drive |
US7372276B2 (en) * | 2005-02-16 | 2008-05-13 | Goldak, Inc. | Digital locating system and device for underground object detection |
US7256956B2 (en) * | 2005-03-16 | 2007-08-14 | Matsushita Electric Industrial Co., Ltd. | Propagation self servowrite using self-written spiral signals for in-process calibration |
CN1862743B (zh) * | 2005-05-13 | 2012-01-18 | 大日科技股份有限公司 | 滚珠开关 |
US8009388B2 (en) * | 2006-10-10 | 2011-08-30 | Seagate Technology Llc | Method for increasing storage capacity and a transducer configuration incorporating the same |
US7880987B2 (en) * | 2007-03-30 | 2011-02-01 | Seagate Technology Llc | Media servowriter/certifier |
KR20080108768A (ko) * | 2007-06-11 | 2008-12-16 | 삼성전자주식회사 | 헤드슬라이더 및 이를 구비한 하드디스크 드라이브 |
US8154817B2 (en) * | 2008-09-05 | 2012-04-10 | Doug Carson & Associates, Inc. | Compensation for different transducer translation path geometries |
US20110134558A1 (en) * | 2009-12-08 | 2011-06-09 | Kabushiki Kaisha Toshiba | Disk device, head distance calculation method, and offset control method |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4388655A (en) * | 1977-09-13 | 1983-06-14 | Zenzefilis George E | Method and apparatus for recording and reproducing video and sound |
JPS5860423A (ja) * | 1981-10-07 | 1983-04-09 | Hitachi Metals Ltd | 磁気ヘツド装置 |
JPS58196619A (ja) * | 1982-05-10 | 1983-11-16 | Hitachi Ltd | 磁気ヘツドおよびその製造方法 |
JPS58215717A (ja) * | 1982-06-09 | 1983-12-15 | Hitachi Ltd | 磁気ヘツド |
JPS6061910A (ja) * | 1983-09-16 | 1985-04-09 | Mitsubishi Electric Corp | 磁気ヘツド組立体 |
FR2557722B1 (fr) * | 1983-12-30 | 1986-04-11 | Bull Sa | Procede d'ecriture d'informations sur un support d'enregistrement |
JPS62295213A (ja) * | 1986-06-13 | 1987-12-22 | Sony Corp | 磁気デイスク装置 |
JPS6398820A (ja) * | 1986-10-15 | 1988-04-30 | Sony Corp | 磁気デイスクの記録方式 |
US4802033A (en) * | 1986-11-07 | 1989-01-31 | Eastman Kodak Company | Predictive positioning offset compensation for high TPI disk systems |
JPH01154311A (ja) * | 1987-12-11 | 1989-06-16 | Toshiba Corp | 磁気ディスク装置 |
JPH01184675A (ja) * | 1988-01-11 | 1989-07-24 | Nec Corp | 磁気記録装置およびトラックアクセス方式 |
US4969059A (en) * | 1988-03-28 | 1990-11-06 | Rigidyne Corporation | Offset nulling system for computer disk drives |
US4945427A (en) * | 1988-06-13 | 1990-07-31 | International Business Machines Corporation | Magnetic disk recording with variable track width and variable track density |
US5073833A (en) * | 1989-11-13 | 1991-12-17 | International Business Machines Corporation | Dual sector servo system for disk file with separate read and write heads |
US5235478A (en) * | 1989-12-15 | 1993-08-10 | Sony Corporation | Disc drive apparatus with servo tracks offset from data tracks |
-
1991
- 1991-08-22 JP JP3233805A patent/JPH04232610A/ja active Pending
- 1991-09-06 SG SG1996000419A patent/SG46192A1/en unknown
- 1991-09-06 DE DE69125447T patent/DE69125447T2/de not_active Expired - Fee Related
- 1991-09-06 EP EP91480142A patent/EP0479703B1/de not_active Expired - Lifetime
- 1991-09-25 MY MYPI91001730A patent/MY110421A/en unknown
- 1991-09-29 CN CN91109434A patent/CN1028574C/zh not_active Expired - Fee Related
- 1991-09-30 KR KR1019910017062A patent/KR960015921B1/ko not_active IP Right Cessation
- 1991-12-31 TW TW080110281A patent/TW226467B/zh active
-
1995
- 1995-02-22 US US08/392,276 patent/US5682274A/en not_active Expired - Lifetime
-
1997
- 1997-07-23 HK HK97101600A patent/HK1000069A1/xx not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
US5682274A (en) | 1997-10-28 |
MY110421A (en) | 1998-05-30 |
SG46192A1 (en) | 1998-02-20 |
HK1000069A1 (en) | 1997-11-07 |
TW226467B (de) | 1994-07-11 |
DE69125447D1 (de) | 1997-05-07 |
JPH04232610A (ja) | 1992-08-20 |
KR920008679A (ko) | 1992-05-28 |
EP0479703B1 (de) | 1997-04-02 |
EP0479703A1 (de) | 1992-04-08 |
KR960015921B1 (ko) | 1996-11-23 |
CN1028574C (zh) | 1995-05-24 |
CN1060919A (zh) | 1992-05-06 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE69125447T2 (de) | Verfahren und Vorrichtung zum Positionieren von Wandlern | |
DE69125972D1 (de) | Verfahren und Gerät zum Spursuchen | |
DE69130914D1 (de) | Verfahren und Vorrichtung zum spanabhebenden Bearbeiten | |
DE69210351T2 (de) | Verfahren und Vorrichtung zum Ausrichten von flachen Gegenständen | |
DE69210650D1 (de) | Vorrichtung und Verfahren zum Elektroplattieren | |
DE69016818D1 (de) | Verfahren und Vorrichtung zum Aufwickeln. | |
DE69113434D1 (de) | Verfahren und vorrichtung zum funkenerosionsbearbeiten. | |
DE68908435D1 (de) | Vorrichtung und verfahren zum kristallziehen. | |
DE69106344D1 (de) | Verfahren und vorrichtung zum palettisieren. | |
DE69002860D1 (de) | Verfahren und Vorrichtung zum Verbinden von Futterrohren. | |
ATA11388A (de) | Verfahren und vorrichtung zum positionieren von plattenfoermigen gegenstaenden | |
DE58903845D1 (de) | Verfahren und vorrichtung zum reinigen von gegenstaenden. | |
DE69101545D1 (de) | Verfahren und vorrichtung zum positionieren von bestandteilen. | |
DE69124710T2 (de) | Vorrichtung und Verfahren zum Ausgeben von Zeichen | |
DE59001618D1 (de) | Verfahren und vorrichtung zum orten von unterseeboote. | |
DE69119393T3 (de) | Verfahren und vorrichtung zum verbinden von knüppeln | |
DE68908330D1 (de) | Vorrichtung und verfahren zum wiedereinfaerben. | |
DE69026043D1 (de) | Vorrichtung und Verfahren zum Flottieren | |
DE68902013D1 (de) | Vorrichtung und verfahren zum stapeln. | |
ATA37990A (de) | Vorrichtung und verfahren zum schlingen von brezeln | |
DE59301245D1 (de) | Verfahren und Vorrichtung zum Positionieren von Spulen | |
DE69307049D1 (de) | Verfahren und Vorrichtung zum Zuführen von Teilen | |
DE69115634D1 (de) | Verfahren und Vorrichtung zum Faserbandansetzen | |
DE69018483D1 (de) | Verfahren und vorrichtung zum vulkanisieren von elastomeren gegenständen. | |
DE69130784D1 (de) | Verfahren und Vorrichtung zum Verarbeiten von medizinischen Informationen |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8327 | Change in the person/name/address of the patent owner |
Owner name: HITACHI GLOBAL STORAGE TECHNOLOGIES NETHERLANDS B. Owner name: IBM UNITED KINGDOM LTD., PORTSMOUTH, HAMPSHIRE, GB |
|
8339 | Ceased/non-payment of the annual fee |