JP2006073075A5 - - Google Patents

Download PDF

Info

Publication number
JP2006073075A5
JP2006073075A5 JP2004253944A JP2004253944A JP2006073075A5 JP 2006073075 A5 JP2006073075 A5 JP 2006073075A5 JP 2004253944 A JP2004253944 A JP 2004253944A JP 2004253944 A JP2004253944 A JP 2004253944A JP 2006073075 A5 JP2006073075 A5 JP 2006073075A5
Authority
JP
Japan
Prior art keywords
magnetic disk
slider
data
flying height
magnetic head
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Withdrawn
Application number
JP2004253944A
Other languages
English (en)
Japanese (ja)
Other versions
JP2006073075A (ja
Filing date
Publication date
Application filed filed Critical
Priority to JP2004253944A priority Critical patent/JP2006073075A/ja
Priority claimed from JP2004253944A external-priority patent/JP2006073075A/ja
Priority to US11/217,515 priority patent/US7271975B2/en
Publication of JP2006073075A publication Critical patent/JP2006073075A/ja
Publication of JP2006073075A5 publication Critical patent/JP2006073075A5/ja
Withdrawn legal-status Critical Current

Links

JP2004253944A 2004-09-01 2004-09-01 磁気ディスク装置及びその制御方法 Withdrawn JP2006073075A (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2004253944A JP2006073075A (ja) 2004-09-01 2004-09-01 磁気ディスク装置及びその制御方法
US11/217,515 US7271975B2 (en) 2004-09-01 2005-08-31 Controlling head flying height in a data storage device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2004253944A JP2006073075A (ja) 2004-09-01 2004-09-01 磁気ディスク装置及びその制御方法

Publications (2)

Publication Number Publication Date
JP2006073075A JP2006073075A (ja) 2006-03-16
JP2006073075A5 true JP2006073075A5 (enExample) 2007-09-20

Family

ID=35942668

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2004253944A Withdrawn JP2006073075A (ja) 2004-09-01 2004-09-01 磁気ディスク装置及びその制御方法

Country Status (2)

Country Link
US (1) US7271975B2 (enExample)
JP (1) JP2006073075A (enExample)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004185735A (ja) * 2002-12-04 2004-07-02 Matsushita Electric Ind Co Ltd 磁気ヘッドアセンブリおよび磁気ディスク装置
JP4805702B2 (ja) * 2006-03-17 2011-11-02 東芝ストレージデバイス株式会社 ディスク装置制御方法及びディスク装置及び書き込み制御回路
JP2007335013A (ja) * 2006-06-15 2007-12-27 Fujitsu Ltd 制御装置および記憶装置
US7457072B2 (en) * 2006-12-04 2008-11-25 Hitachi Global Storage Technologies Netherlands B.V. Disk drive with head fly-height compensation for disk surface variations
JP4795982B2 (ja) * 2007-01-31 2011-10-19 ヒタチグローバルストレージテクノロジーズネザーランドビーブイ ディスク・ドライブ装置、その高度判定方法及びそのヘッド素子部の特性判定方法
JP2008293625A (ja) * 2007-05-28 2008-12-04 Hitachi Global Storage Technologies Netherlands Bv ヘッドとディスクとの間のクリアランスを制御する制御値を決定する装置、その方法及び磁気ディスク・ドライブ装置
US7605996B2 (en) * 2007-12-28 2009-10-20 Hitachi Global Storage Technologies Netherlands B.V. Method and system for detecting a change in a rotational velocity of a magnetic disk or a spindle coupled to the magnetic disk
US7839595B1 (en) 2008-01-25 2010-11-23 Western Digital Technologies, Inc. Feed forward compensation for fly height control in a disk drive
US7872828B1 (en) * 2008-05-07 2011-01-18 Marvell International Ltd. Flying height measurement
US8934192B1 (en) * 2008-11-24 2015-01-13 Western Digital Technologies, Inc. Disk drive determining operating fly height by detecting head disk contact from read signal amplitude variance
KR20100104168A (ko) * 2009-03-17 2010-09-29 삼성전자주식회사 하드디스크 드라이브의 ｆｏｄ 전압 제어 방법
US20100265618A1 (en) * 2009-04-15 2010-10-21 Zine-Eddine Boutaghou Method and Apparatus for Reducing Head Media Spacing in a Disk Drive
US8085488B2 (en) * 2009-08-27 2011-12-27 Hitachi Global Storage Technologies Netherlands B.V. Predicting operational problems in a hard-disk drive (HDD)
US8320069B1 (en) 2010-03-18 2012-11-27 Western Digital Technologies, Inc. Disk drive detecting positive correlation in fly height measurements
US8059357B1 (en) 2010-03-18 2011-11-15 Western Digital Technologies, Inc. Disk drive adjusting fly height when calibrating head/disk contact
US7916420B1 (en) 2010-05-14 2011-03-29 Western Digital Technologies, Inc. Disk drive employing comb filter for repeatable fly height compensation
US8300338B1 (en) 2010-09-30 2012-10-30 Western Digital Technologies, Inc. Disk drive correlating different fly height measurements to verify disk warpage
US8717859B1 (en) 2013-01-07 2014-05-06 Elwha, Llc Reactionless control of a slider head
US8638649B1 (en) 2013-01-07 2014-01-28 Elwha, Llc Topographic feedforward system
US8737183B1 (en) 2013-01-07 2014-05-27 Elwha, Llc Topographic feedforward system
JP6689242B2 (ja) * 2017-09-19 2020-04-28 株式会社東芝 磁気ディスク装置および磁気ヘッド制御方法
JP7293105B2 (ja) 2019-12-24 2023-06-19 株式会社東芝 磁気ディスク装置
JP2025159536A (ja) * 2024-04-08 2025-10-21 株式会社東芝 磁気ディスク装置におけるヘッド浮上量の調整方法

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4777544A (en) * 1986-08-15 1988-10-11 International Business Machine Corporation Method and apparatus for in-situ measurement of head/recording medium clearance
US5909330A (en) * 1996-12-12 1999-06-01 Maxtor Corporation Method and apparatus for detecting head flying height in a disk drive
US6408677B1 (en) * 1998-09-30 2002-06-25 Komag Corporation Calibration disk having discrete bands of composite roughness
US6587301B1 (en) * 2000-01-19 2003-07-01 Gordon James Smith System and method for calibrating and controlling the internal pressure of a hard disk drive
US6678102B1 (en) * 2000-08-29 2004-01-13 Maxtor Corporation High fly write detection method
US6987628B1 (en) * 2000-07-13 2006-01-17 Maxtor Corporation Method and apparatus for high fly write detection using stored amplitude values
US6785079B2 (en) * 2001-03-16 2004-08-31 Hitachi Global Storage Technologies Netherlands B.V. Method and apparatus for estimating the flyheight of an airbearing slider in a storage device

Similar Documents

Publication Publication Date Title
JP2006073075A5 (enExample)
CN101436411B (zh) 磁盘驱动器
US5863237A (en) Low speed burnishing of asperities in a disc drive
CN102842311A (zh) 划定数据磁道以避开热粗糙的磁盘驱动器
US7271975B2 (en) Controlling head flying height in a data storage device
CN101471083A (zh) 用于磁盘驱动器中的偏移控制的方法及设备
CN100367350C (zh) 具有盘颤动电容感应和前馈控制的盘驱动器
KR20110087000A (ko) 하드디스크 드라이브의 서보 패턴 기록 방법 및 그에 의해 제조되는 하드디스크 드라이브
JP4908869B2 (ja) 磁気ディスク装置
US7423832B2 (en) Controlling head heating based on upcoming data sector write pattern
US6611389B1 (en) Method of determining the variation of the clearance between a magnetic transducer and a recording media during track seeking
US7652840B2 (en) Head damage detection based on actuation efficiency measurements
US7342736B1 (en) Methods and disk drive that measure head flying height at power-on/off
US20080291564A1 (en) Detecting head-disk contact during off-track operations
JP2010218680A (ja) ハードディスクドライブのｆｏｄ電圧制御方法
US6603630B1 (en) Method and apparatus for monitoring track misregistration
US8238051B2 (en) Real time monitoring inconsistent operations in a hard disk drive
JPH08167121A (ja) 磁気ディスクの異常突起検出方法及び磁気ディスク装置
JP2002288956A (ja) 磁気ディスク装置及び該装置におけるサーボ情報記録方法
JP5536548B2 (ja) 磁気記録再生装置の制御方法、磁気記録再生装置、磁気記録媒体の検査方法および磁気記録媒体の製造方法
US7227711B2 (en) System, method, and apparatus for in-situ stray magnetic field measurement
JPH03272066A (ja) サーボトラック書込み方法及びその装置
US8553349B2 (en) Servo routine for track seeking in a hard disk drive and hard disk drive for performing the same
US9177583B2 (en) Hard disk drive and method for controlling flying height of magnetic head thereof
JPH07226041A (ja) データ記録再生装置とヘッド幅測定装置