JP2000504138A5 - - Google Patents

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Publication number
JP2000504138A5
JP2000504138A5 JP1997527775A JP52777597A JP2000504138A5 JP 2000504138 A5 JP2000504138 A5 JP 2000504138A5 JP 1997527775 A JP1997527775 A JP 1997527775A JP 52777597 A JP52777597 A JP 52777597A JP 2000504138 A5 JP2000504138 A5 JP 2000504138A5
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JP
Japan
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.)
Pending
Application number
JP1997527775A
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English (en)
Japanese (ja)
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JP2000504138A (ja
Filing date
Publication date
Priority claimed from US08/594,114 external-priority patent/US5867341A/en
Application filed filed Critical
Publication of JP2000504138A publication Critical patent/JP2000504138A/ja
Publication of JP2000504138A5 publication Critical patent/JP2000504138A5/ja
Pending legal-status Critical Current

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JP9527775A 1996-01-30 1997-01-28 複数対の埋込みサーボバーストを使用したディスク駆動装置 Pending JP2000504138A (ja)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US08/594,114 1996-01-30
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

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP2008153226A Division JP4273169B2 (ja) 1996-01-30 2008-06-11 複数対の埋込みサーボバーストを使用したディスク駆動装置

Publications (2)

Publication Number Publication Date
JP2000504138A JP2000504138A (ja) 2000-04-04
JP2000504138A5 true JP2000504138A5 (enExample) 2004-12-09

Family

ID=24377579

Family Applications (2)

Application Number Title Priority Date Filing Date
JP9527775A Pending JP2000504138A (ja) 1996-01-30 1997-01-28 複数対の埋込みサーボバーストを使用したディスク駆動装置
JP2008153226A Expired - Fee Related JP4273169B2 (ja) 1996-01-30 2008-06-11 複数対の埋込みサーボバーストを使用したディスク駆動装置

Family Applications After (1)

Application Number Title Priority Date Filing Date
JP2008153226A Expired - Fee Related JP4273169B2 (ja) 1996-01-30 2008-06-11 複数対の埋込みサーボバーストを使用したディスク駆動装置

Country Status (6)

Country Link
US (1) US5867341A (enExample)
JP (2) JP2000504138A (enExample)
KR (1) KR19990082051A (enExample)
DE (1) DE19781547T1 (enExample)
GB (1) GB2324403B (enExample)
WO (1) WO1997028529A1 (enExample)

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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
US6064542A (en) * 1997-08-08 2000-05-16 Quantum Corporation Methods and apparatus for positioning read/write head in a computer disk drive
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
US6426845B1 (en) * 1998-05-21 2002-07-30 Seagate Technology Llc Asynchronous analog demodulator and method 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
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
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
US7984084B2 (en) 2005-08-03 2011-07-19 SanDisk Technologies, Inc. Non-volatile memory with scheduled reclaim operations
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
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
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
US7468859B2 (en) * 2006-05-31 2008-12-23 Kabushiki Kaisha Toshiba Voice coil motor effective resistance determination
US20070279790A1 (en) * 2006-05-31 2007-12-06 Tanner Brian K Adjustable output voltage regulator for disk drive
US7457066B2 (en) * 2006-05-31 2008-11-25 Kabushiki Kiasha Toshiba Method and apparatus for phase-shift null-burst-pattern
US20070279781A1 (en) * 2006-05-31 2007-12-06 Toshiba America Information Systems, Inc. Channel training method and apparatus
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

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US4498129A (en) * 1981-07-02 1985-02-05 Irwin Magnetic Systems, Inc. Method and apparatus for normalizing servo-positioning signals
EP0088554B1 (en) * 1982-02-24 1986-04-16 Kabushiki Kaisha Toshiba Method and system for detecting the position of and apparatus for positioning a read-write head in seek operation on a disk memory having data and servo sectors
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
WO1991002354A1 (en) * 1989-07-27 1991-02-21 Conner Peripherals, Inc. Disk drive system using multiple embedded quadrature servo fields
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
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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

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