DE19781547T1 - Plattenlaufwerksystem mit mehreren Paaren eingebetteter Servo-Bursts - Google Patents
Plattenlaufwerksystem mit mehreren Paaren eingebetteter Servo-BurstsInfo
- Publication number
- DE19781547T1 DE19781547T1 DE19781547T DE19781547T DE19781547T1 DE 19781547 T1 DE19781547 T1 DE 19781547T1 DE 19781547 T DE19781547 T DE 19781547T DE 19781547 T DE19781547 T DE 19781547T DE 19781547 T1 DE19781547 T1 DE 19781547T1
- Authority
- DE
- Germany
- Prior art keywords
- disk drive
- drive system
- multiple pairs
- servo bursts
- embedded servo
- 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.)
- Ceased
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
- G11B5/58—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
- G11B5/59688—Servo signal format patterns or signal processing thereof, e.g. dual, tri, quad, burst signal patterns
-
- 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
- G11B5/59655—Sector, sample or burst servo format
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/594,114 US5867341A (en) | 1996-01-30 | 1996-01-30 | Disc drive system using multiple pairs of embedded servo bursts |
PCT/US1997/001345 WO1997028529A1 (en) | 1996-01-30 | 1997-01-28 | Disc drive system using multiple pairs of embedded servo bursts |
Publications (1)
Publication Number | Publication Date |
---|---|
DE19781547T1 true DE19781547T1 (de) | 1999-04-08 |
Family
ID=24377579
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19781547T Ceased DE19781547T1 (de) | 1996-01-30 | 1997-01-28 | Plattenlaufwerksystem mit mehreren Paaren eingebetteter Servo-Bursts |
Country Status (6)
Country | Link |
---|---|
US (1) | US5867341A (de) |
JP (2) | JP2000504138A (de) |
KR (1) | KR19990082051A (de) |
DE (1) | DE19781547T1 (de) |
GB (1) | GB2324403B (de) |
WO (1) | WO1997028529A1 (de) |
Families Citing this family (43)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6046879A (en) * | 1996-05-16 | 2000-04-04 | Seagate Technology, Inc. | Weighted linearization of a position error signal in a disc drive |
US6002541A (en) * | 1997-06-30 | 1999-12-14 | International Business Machines Corporation | Method and apparatus for providing a linear position error sensing (PES) signal |
US6101064A (en) * | 1997-08-08 | 2000-08-08 | Quantum Corporation | Methods and apparatus for efficiently controlling a read/write head in a computer disk drive |
US6064542A (en) * | 1997-08-08 | 2000-05-16 | Quantum Corporation | Methods and apparatus for positioning read/write head in a computer disk drive |
US6426845B1 (en) * | 1998-05-21 | 2002-07-30 | Seagate Technology Llc | Asynchronous analog demodulator and method for a null-type servo pattern |
US6195220B1 (en) | 1998-05-21 | 2001-02-27 | Seagate Technology Llc | Method and apparatus utilizing field ratioing demodulation techniques for a null-type servo pattern |
US6243224B1 (en) * | 1998-05-21 | 2001-06-05 | Seagate Technology Llc | Asynchronous digital demodulator and method for a null-type servo pattern |
US6611397B1 (en) * | 1998-06-05 | 2003-08-26 | Seagate Technology Llc | Servo burst pattern defect detection |
US6181505B1 (en) | 1998-06-26 | 2001-01-30 | Seagate Technology Llc | Synchronous digital demodulator with integrated read and servo channels |
JP3082753B2 (ja) * | 1998-10-28 | 2000-08-28 | 日本電気株式会社 | 位置決め制御装置、可換磁気ディスク装置及びヘッド制御方法 |
US6377413B1 (en) | 1999-03-26 | 2002-04-23 | Seagate Technology Llc | Method and apparatus for encoding identification information on a magnetic disc |
US6490117B1 (en) | 1999-03-26 | 2002-12-03 | Seagate Technology Llc | Method of thermally printing servo patterns on magnetic media |
US6023145A (en) * | 1999-04-21 | 2000-02-08 | Guzik Technical Enterprises | Head and disk tester with a thermal drift-compensated closed-loop positioning system |
US6574068B1 (en) | 1999-04-21 | 2003-06-03 | Seagate Technology Llc | Servo control using continuous position error signal with high order polynomial component |
US6421198B1 (en) | 1999-04-27 | 2002-07-16 | International Business Machines Corporation | Linearity compensation for a position error signal based on repeatable and non-repeatable run out in a disk drive |
US6522493B1 (en) | 1999-04-27 | 2003-02-18 | International Business Machines Corporation | Position error signal linearization using an auxiliary discontinuity removal routine |
US6606216B1 (en) * | 1999-05-05 | 2003-08-12 | Maxtor Corporation | Transducer head with separate data and servo read elements |
US6490111B1 (en) | 1999-08-25 | 2002-12-03 | Seagate Technology Llc | Method and apparatus for refreshing servo patterns in a disc drive |
US6865041B1 (en) | 2000-02-29 | 2005-03-08 | Hitachi Global Storage Technologies Netherlands B.V. | Method and apparatus for servowriting using a unipolar write current |
US6747824B1 (en) * | 2000-05-26 | 2004-06-08 | Hitachi Global Storage Technologies Netherlands, B.V. | Method and apparatus for head crash predictive failure analysis based upon slider track misregistration measurement using the readback signal |
US6768609B2 (en) | 2000-11-27 | 2004-07-27 | Seagate Technology Llc | Reducing position error signal nonlinearity through iterative calibration of a compensation table |
US6917487B2 (en) * | 2002-03-21 | 2005-07-12 | Hitachi Global Storage Technologies, Inc. | Seamless and untrimmed primary servo burst with secondary servo bursts |
JP3961456B2 (ja) * | 2003-06-30 | 2007-08-22 | 富士通株式会社 | ヘッド位置復調方法及びデイスク装置 |
US7139150B2 (en) * | 2004-02-10 | 2006-11-21 | Marvell International Ltd. | Method and system for head position control in embedded disk drive controllers |
US7453663B1 (en) * | 2004-06-09 | 2008-11-18 | Maxtor Corporation | Disk drives with servo burst patterns radially offset in different radial spokes of a disk and methods of positioning based thereon |
JP4185067B2 (ja) * | 2005-03-30 | 2008-11-19 | 株式会社東芝 | 磁気ディスク装置におけるヘッド位置演算方法 |
JP2006309843A (ja) * | 2005-04-27 | 2006-11-09 | Toshiba Corp | ディスクドライブ及びサーボ制御方法 |
US7409489B2 (en) | 2005-08-03 | 2008-08-05 | Sandisk Corporation | Scheduling of reclaim operations in non-volatile memory |
US7440224B2 (en) * | 2006-01-23 | 2008-10-21 | Toshiba Corporation | Disk drive servo |
GB2449015B (en) * | 2006-02-10 | 2011-04-13 | Xyratex Tech Ltd | Method of positioning a head,and method and apparatus for testing a head |
US7721049B2 (en) * | 2006-03-27 | 2010-05-18 | Kabuhsiki Kaisha Toshiba | Disk drive write method |
US7453660B2 (en) * | 2006-05-31 | 2008-11-18 | Kabushiki Kaisha Toshiba | Shock feed forward adaptive filters |
US7436616B2 (en) * | 2006-05-31 | 2008-10-14 | Toshiba Corporation | Current pulsing for unloading |
US20070279790A1 (en) * | 2006-05-31 | 2007-12-06 | Tanner Brian K | Adjustable output voltage regulator for disk drive |
US7468859B2 (en) * | 2006-05-31 | 2008-12-23 | Kabushiki Kaisha Toshiba | Voice coil motor effective resistance determination |
US20070279782A1 (en) * | 2006-05-31 | 2007-12-06 | Rydhan Abdul R | Method and apparatus for determining offset between read and write transducers in a disk drive |
US20070279788A1 (en) * | 2006-05-31 | 2007-12-06 | Toshiba America Information Systems, Inc. | Method and apparatus to perform defect scanning |
US20070279781A1 (en) * | 2006-05-31 | 2007-12-06 | Toshiba America Information Systems, Inc. | Channel training method and apparatus |
US7457066B2 (en) * | 2006-05-31 | 2008-11-25 | Kabushiki Kiasha Toshiba | Method and apparatus for phase-shift null-burst-pattern |
US8023221B1 (en) | 2007-11-15 | 2011-09-20 | Marvell International Ltd. | Position gain calibration in disk drives |
US7576942B1 (en) | 2008-04-22 | 2009-08-18 | Seagate Technology Llc | Servo sector format with large lithographic tolerances |
US9666212B2 (en) | 2012-12-05 | 2017-05-30 | Seagate Technology Llc | Writer with protruded section at trailing edge |
JP2021018827A (ja) * | 2019-07-23 | 2021-02-15 | 株式会社東芝 | ディスク装置 |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4498129A (en) * | 1981-07-02 | 1985-02-05 | Irwin Magnetic Systems, Inc. | Method and apparatus for normalizing servo-positioning signals |
EP0088554B1 (de) * | 1982-02-24 | 1986-04-16 | Kabushiki Kaisha Toshiba | Verfahren und Vorrichtung zur Lageermittlung und Vorrichtung zum Positionieren eines Schreib-Lesekopfes während der Suchoperation bei einem Plattenspeicher mit Daten und Servosektoren |
US4669004A (en) * | 1986-02-27 | 1987-05-26 | Quantum Corporation | High capacity disk file with embedded sector servo |
US4982298A (en) * | 1988-08-01 | 1991-01-01 | Rigidyne Corporation | Adaptive velocity profile system for a disk drive head |
EP0494869B1 (de) * | 1989-07-27 | 1996-09-04 | Conner Peripherals, Inc. | Plattenantriebssystem mit mehreren eingebetteten quadratur-servo-feldern |
US5117408A (en) * | 1989-09-29 | 1992-05-26 | Seagate Technology, Inc. | Correlation of sectored servo position information |
JP2946636B2 (ja) * | 1990-05-21 | 1999-09-06 | ソニー株式会社 | 磁気ディスク装置のトラックアドレスパターン |
US5396380A (en) * | 1990-07-16 | 1995-03-07 | Matsushita Electric Industrial Co., Ltd. | Resolution enhancement of absolute track position using iterative process and position bursts with track following capability |
US5185681A (en) * | 1990-09-28 | 1993-02-09 | Seagate | Thermal offset compensation for high density disk drives |
US5311376A (en) * | 1991-06-11 | 1994-05-10 | Western Digital (Singapore) Pte | Information detecting system |
US5305447A (en) * | 1991-07-31 | 1994-04-19 | Seagate Technology, Inc. | Multi-task operating system for a disc drive |
US5455724A (en) * | 1992-03-31 | 1995-10-03 | Fujitsu Limited | Method of compensating offtrack in disk unit |
US5343340A (en) * | 1992-12-31 | 1994-08-30 | International Business Machines Corporation | Digital servo signal demodulation method and apparatus utilizing a partial-response maximum-likelihood (PRML) channel in a disk file |
US5362993A (en) * | 1993-09-10 | 1994-11-08 | Quantum Corporation | Weighted average servo burst peak detector for disk drive read |
US5400201A (en) * | 1993-10-25 | 1995-03-21 | Syquest Technology, Inc. | Servo burst pattern for removing offset caused by magnetic distortion and method associated therewith |
US5602693A (en) * | 1994-12-14 | 1997-02-11 | Micropolis (S) Pte Ltd. | Method and apparatus for sensing position in a disk drive |
US5600506A (en) * | 1995-05-10 | 1997-02-04 | Conner Peripherals, Inc. | Apparatus and method for determining the position of a transducer relative to a disk surface in a disk drive system |
-
1996
- 1996-01-30 US US08/594,114 patent/US5867341A/en not_active Expired - Lifetime
-
1997
- 1997-01-28 GB GB9815153A patent/GB2324403B/en not_active Expired - Fee Related
- 1997-01-28 WO PCT/US1997/001345 patent/WO1997028529A1/en not_active Application Discontinuation
- 1997-01-28 JP JP9527775A patent/JP2000504138A/ja active Pending
- 1997-01-28 KR KR1019980705771A patent/KR19990082051A/ko not_active Application Discontinuation
- 1997-01-28 DE DE19781547T patent/DE19781547T1/de not_active Ceased
-
2008
- 2008-06-11 JP JP2008153226A patent/JP4273169B2/ja not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JP2008262691A (ja) | 2008-10-30 |
JP2000504138A (ja) | 2000-04-04 |
US5867341A (en) | 1999-02-02 |
KR19990082051A (ko) | 1999-11-15 |
JP4273169B2 (ja) | 2009-06-03 |
WO1997028529A1 (en) | 1997-08-07 |
GB2324403A (en) | 1998-10-21 |
GB2324403B (en) | 2000-02-09 |
GB9815153D0 (en) | 1998-09-09 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OP8 | Request for examination as to paragraph 44 patent law | ||
8607 | Notification of search results after publication | ||
8127 | New person/name/address of the applicant |
Owner name: SEAGATE TECHNOLOGY LLC, SCOTTS VALLEY, CALIF., US |
|
8131 | Rejection |