DE10083807T1 - Verfahren und Vorrichtung zum Verringern von Spurfehlregistrierung vom Servospurschreiben - Google Patents
Verfahren und Vorrichtung zum Verringern von Spurfehlregistrierung vom ServospurschreibenInfo
- Publication number
- DE10083807T1 DE10083807T1 DE10083807T DE10083807T DE10083807T1 DE 10083807 T1 DE10083807 T1 DE 10083807T1 DE 10083807 T DE10083807 T DE 10083807T DE 10083807 T DE10083807 T DE 10083807T DE 10083807 T1 DE10083807 T1 DE 10083807T1
- Authority
- DE
- Germany
- Prior art keywords
- servo track
- track writing
- misregistration
- reducing
- reducing misregistration
- 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- Withdrawn
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
- G11B5/4806—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 specially adapted for disk drive assemblies, e.g. assembly prior to operation, hard or flexible disk drives
- G11B5/4813—Mounting or aligning of arm assemblies, e.g. actuator arm supported by bearings, multiple arm assemblies, arm stacks or multiple heads on single arm
-
- 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
- G11B5/5582—Track change, selection or acquisition by displacement of the head across disk tracks system adaptation for working during or after external perturbation, e.g. in the presence of a mechanical oscillation caused by a shock
-
- 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
- G11B5/59627—Aligning for runout, eccentricity or offset compensation
-
- 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
-
- 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
- G11B5/59638—Servo formatting apparatuses, e.g. servo-writers
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11597099P | 1999-01-15 | 1999-01-15 | |
PCT/US2000/000995 WO2000042604A2 (en) | 1999-01-15 | 2000-01-14 | Method and apparatus for reducing track misregistration from servo track writing |
Publications (1)
Publication Number | Publication Date |
---|---|
DE10083807T1 true DE10083807T1 (de) | 2002-03-07 |
Family
ID=22364457
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE10083807T Withdrawn DE10083807T1 (de) | 1999-01-15 | 2000-01-14 | Verfahren und Vorrichtung zum Verringern von Spurfehlregistrierung vom Servospurschreiben |
Country Status (6)
Country | Link |
---|---|
US (1) | US6476995B1 (de) |
JP (1) | JP2003529869A (de) |
KR (1) | KR20010110342A (de) |
DE (1) | DE10083807T1 (de) |
GB (1) | GB2363509B (de) |
WO (1) | WO2000042604A2 (de) |
Families Citing this family (33)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6618219B1 (en) | 1999-10-12 | 2003-09-09 | Seagate Technology Llc | Method and apparatus for feedforward cancellation using a peak detector |
US6628472B1 (en) * | 1999-10-12 | 2003-09-30 | Seagate Technoogy Llc | Method and apparatus for feedforward cancellation using a phase lock loop |
US7167333B1 (en) | 2000-05-09 | 2007-01-23 | Maxtor Corporation | Method and apparatus for writing and reading servo information written in a spiral fashion |
US7133239B1 (en) | 2000-05-09 | 2006-11-07 | Maxtor Corporation | Methods and apparatuses for writing spiral servo patterns onto a disk surface |
US7139144B1 (en) * | 2000-08-04 | 2006-11-21 | Maxtor Corporation | Method and apparatus for writing spiral servo information by modifying existing servo track writing equipment |
SG104270A1 (en) * | 2000-06-14 | 2004-06-21 | Seagate Technology Llc | Feed-forward compensation of cage frequency using a reference head in a servo-writer |
US6785073B2 (en) * | 2000-06-14 | 2004-08-31 | Seagate Technology Llc | Identification and cancellation of cage frequency in a hard disc drive |
US6628471B1 (en) * | 2000-06-16 | 2003-09-30 | Seagate Technology Llc | Detection and cancellation of cage frequency using the clock head in a servowriter |
SG105485A1 (en) * | 2000-06-16 | 2004-08-27 | Seagate Technology Llc | Detection and cancellation of cage frequency using the clock head in a dervo writer |
US6721120B2 (en) * | 2000-06-20 | 2004-04-13 | Seagate Technology Llc | Prediction and cancellation of cage frequency in a disc drive |
SG108252A1 (en) * | 2000-06-20 | 2005-01-28 | Seagate Technology Llc | Prediction and cancellation of cage frequency in a disc drive |
US6762902B2 (en) * | 2000-12-15 | 2004-07-13 | Samsung Electronics Co., Ltd. | Time-varying, non-synchronous disturbance identification and cancellation in a rotating disk storage device |
US6952319B2 (en) * | 2001-06-01 | 2005-10-04 | Seagate Technology Llc | Writing position data ex situ using an actuator retractable by a retractable support element |
JP2003123420A (ja) * | 2001-10-04 | 2003-04-25 | Internatl Business Mach Corp <Ibm> | サーボ情報書き込み装置およびサーボ情報書き込み方法 |
US20030197969A1 (en) * | 2002-04-18 | 2003-10-23 | Gabor Szita | Controlling low frequency track shape errors in hard disc drives employing self-propagated servo track writing |
WO2004023458A1 (en) * | 2002-09-05 | 2004-03-18 | Seagate Technology Llc | Selecting a target destination using seek cost indicator based on the actual position |
US7248427B1 (en) | 2003-06-02 | 2007-07-24 | Maxtor Corporagion | Method and apparatus for reducing velocity errors when writing spiral servo information onto a disk surface |
US7623313B1 (en) | 2003-06-02 | 2009-11-24 | Maxtor Corporation | Method and apparatus for performing a self-servo write operation in a disk drive |
US6963466B2 (en) * | 2003-06-25 | 2005-11-08 | Seagate Technology Llc | Radial dependent low frequency repeatable run out compensation apparatus and method |
US7151645B2 (en) * | 2003-09-23 | 2006-12-19 | Seagate Technology Llc | Interleaved repeatable runout estimation |
US7009391B2 (en) * | 2003-10-15 | 2006-03-07 | Seagate Technology Llc | High throughput missing pattern detector for servo printed recording media |
US7457075B2 (en) * | 2004-02-24 | 2008-11-25 | Seagate Technology Llc | System and method for reducing ZAP time and track squeeze in a data storage device |
US7012777B1 (en) * | 2004-09-30 | 2006-03-14 | Hitachi Global Storage Technologies Netherlands B.V. | Disk drive with capacitance sensing of disk vibration and feedforward control for removal of read/write head track misregistration |
JP2011123966A (ja) * | 2009-12-12 | 2011-06-23 | Hitachi Global Storage Technologies Netherlands Bv | ディスクへサーボ・ライト・トラックを書き込む方法及びディスク・ドライブ |
US8743495B1 (en) | 2011-06-03 | 2014-06-03 | Western Digital Technologies, Inc. | Disk drive detecting track squeeze when circular tracks are defined from non-circular servo tracks |
US8717704B1 (en) | 2012-02-28 | 2014-05-06 | Western Digital Technologies, Inc. | Disk drive defining non-circular data tracks relative to a rotation axis of the disk |
US8749904B1 (en) | 2012-02-28 | 2014-06-10 | Western Digital Technologies, Inc. | Disk drive compensating for track squeeze by writing non-circular servo tracks |
US8724253B1 (en) | 2012-03-27 | 2014-05-13 | Western Digital Technologies, Inc. | Disk drive adjusting demodulation window for spiral track using timing feed-forward compensation |
US8670206B1 (en) | 2012-03-27 | 2014-03-11 | Western Digital Technologies, Inc. | Disk drive estimating repeatable runout of reference pattern based on repeatable runout of phase error |
US8929021B1 (en) | 2012-03-27 | 2015-01-06 | Western Digital Technologies, Inc. | Disk drive servo writing from spiral tracks using radial dependent timing feed-forward compensation |
US8917475B1 (en) | 2013-12-20 | 2014-12-23 | Western Digital Technologies, Inc. | Disk drive generating a disk locked clock using radial dependent timing feed-forward compensation |
US9286926B1 (en) | 2015-08-25 | 2016-03-15 | HGST Netherlands B.V. | Two-dimensional magnetic recording (TDMR) disk drive with varying servo track pitch |
US10923146B1 (en) | 2020-06-05 | 2021-02-16 | Western Digital Technologies, Inc. | Data storage device employing triangle-like dither to spread track squeeze |
Family Cites Families (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4458280A (en) | 1982-01-18 | 1984-07-03 | International Business Machines Corporation | Servo writing transducer design and writing method |
US4589037A (en) * | 1985-03-18 | 1986-05-13 | International Business Machines Corporation | Servo control system using a varying frequency servo pattern for read/write head positioning in a magnetic recording disk file |
US4920442A (en) | 1988-09-08 | 1990-04-24 | Quantum Corporation | Releasable servo writing fixture connector |
US4980783A (en) * | 1989-03-29 | 1990-12-25 | Seagate Technology, Inc. | Apparatus for automatically applying servo track data to a selected servo surface of a hard disk within a hard disk assembly |
US5379171A (en) * | 1991-09-25 | 1995-01-03 | Integral Peripherals | Microminiature hard disk drive |
US6040955A (en) | 1992-06-11 | 2000-03-21 | International Business Machines Corporation | Self servo writing file |
US5559648A (en) | 1993-08-13 | 1996-09-24 | Integral Peripherals, Inc. | Method for optimizing track location during servo writing |
US5617267A (en) * | 1994-12-15 | 1997-04-01 | Kabushiki Kaisha Toshiba | Servo data writing apparatus for supporting the free end of a rotating shaft in a magnetic disk device and method of writing servo data |
JPH08306125A (ja) * | 1995-04-28 | 1996-11-22 | Toshiba Corp | 情報記録再生装置 |
US5570241A (en) | 1995-05-24 | 1996-10-29 | Conner Peripherals, Inc. | Single channel, multiple head servo writing with embedded head identification |
JP2980545B2 (ja) * | 1995-09-25 | 1999-11-22 | インターナショナル・ビジネス・マシーンズ・コーポレイション | デイスク装置およびデイスク装置におけるヘッド位置制御方法 |
US5771130A (en) | 1996-04-15 | 1998-06-23 | Phase Metrics | Method and apparatus for non-contact servo writing |
US5825578A (en) * | 1996-06-11 | 1998-10-20 | Seagate Technology, Inc. | Method and apparatus for compensating track position due to written-in runout error in a disc drive |
JPH1011927A (ja) | 1996-06-24 | 1998-01-16 | Toshiba Corp | 磁気ディスク装置用サーボライト装置及びサーボライト方法 |
US5793554A (en) | 1996-07-09 | 1998-08-11 | International Business Machines Corporation | Self-servowriting system with dynamic error propagation reduction |
US5774294A (en) | 1996-08-21 | 1998-06-30 | Seagate Technology, Inc. | Servo track writer with tuned damper |
US5966263A (en) | 1997-08-01 | 1999-10-12 | International Business Machines Corporation | Method and apparatus to increase head/AE select robustness for a system using multiple head servo write |
US6315452B1 (en) * | 2000-04-28 | 2001-11-13 | Forrest D. Titcomb | Zero static-friction actuator pivot bearing for production disk drives |
US6785073B2 (en) * | 2000-06-14 | 2004-08-31 | Seagate Technology Llc | Identification and cancellation of cage frequency in a hard disc drive |
-
2000
- 2000-01-14 US US09/483,525 patent/US6476995B1/en not_active Expired - Fee Related
- 2000-01-14 JP JP2000594111A patent/JP2003529869A/ja active Pending
- 2000-01-14 WO PCT/US2000/000995 patent/WO2000042604A2/en active Search and Examination
- 2000-01-14 DE DE10083807T patent/DE10083807T1/de not_active Withdrawn
- 2000-01-14 KR KR1020017008942A patent/KR20010110342A/ko not_active Application Discontinuation
- 2000-01-14 GB GB0116180A patent/GB2363509B/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JP2003529869A (ja) | 2003-10-07 |
KR20010110342A (ko) | 2001-12-13 |
WO2000042604A3 (en) | 2000-11-30 |
GB2363509A (en) | 2001-12-19 |
US6476995B1 (en) | 2002-11-05 |
GB2363509B (en) | 2002-10-30 |
GB0116180D0 (en) | 2001-08-22 |
WO2000042604A2 (en) | 2000-07-20 |
WO2000042604B1 (en) | 2000-12-28 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8127 | New person/name/address of the applicant |
Owner name: SEAGATE TECHNOLOGY LLC, SCOTTS VALLEY, CALIF., US |
|
8139 | Disposal/non-payment of the annual fee |