JP2004111022A5 - - Google Patents
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- Publication number
- JP2004111022A5 JP2004111022A5 JP2003206440A JP2003206440A JP2004111022A5 JP 2004111022 A5 JP2004111022 A5 JP 2004111022A5 JP 2003206440 A JP2003206440 A JP 2003206440A JP 2003206440 A JP2003206440 A JP 2003206440A JP 2004111022 A5 JP2004111022 A5 JP 2004111022A5
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- Japan
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Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US10/219,893 US6906878B2 (en) | 2002-08-15 | 2002-08-15 | Method and system for implementing in situ low flyheight warning |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2004111022A JP2004111022A (ja) | 2004-04-08 |
| JP2004111022A5 true JP2004111022A5 (US08088387-20120103-C00002.png) | 2006-09-21 |
| JP4098681B2 JP4098681B2 (ja) | 2008-06-11 |
Family
ID=31714820
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2003206440A Expired - Fee Related JP4098681B2 (ja) | 2002-08-15 | 2003-08-07 | 低浮上高さ警告をそのままの状態で実行する方法と装置 |
Country Status (8)
Families Citing this family (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6822816B2 (en) * | 2002-05-23 | 2004-11-23 | Seagate Technology Llc | Electrical detection of low flying read/write head for a disc drive |
| US7430083B2 (en) * | 2002-05-23 | 2008-09-30 | Seagate Technology Llc | Virtual head fly profile measurement |
| 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 |
| US7016131B2 (en) * | 2003-08-29 | 2006-03-21 | Agency For Science, Technology And Research | Method and implementation of in-situ absolute head medium spacing measurement |
| US7370058B2 (en) * | 2003-10-28 | 2008-05-06 | International Business Machines Corporation | Algorithm for sorting bit sequences in linear complexity |
| US7467138B2 (en) * | 2003-10-28 | 2008-12-16 | International Business Machines Corporation | Algorithm for sorting bit sequences in linear complexity |
| US7190547B2 (en) * | 2004-12-30 | 2007-03-13 | Samsung Electronics Co., Ltd. | Methods for detecting contact between a read-write head and the accessed disk surface in a hard disk drive |
| US20060146437A1 (en) * | 2004-12-30 | 2006-07-06 | Andrei Khurshudov | Apparatus for detecting contact between a read-write head and the accessed disk surface in a hard disk drive |
| JP2007179717A (ja) * | 2005-12-01 | 2007-07-12 | Fujitsu Ltd | 接触検出装置、接触検出方法、ヘッドの製造方法 |
| US7280305B2 (en) * | 2006-01-13 | 2007-10-09 | Samsung Electronics Co., Ltd. | Method and apparatus for estimating and controlling the flying height of a read-write head in a hard disk drive |
| US7573668B2 (en) * | 2006-01-16 | 2009-08-11 | Samsung Electronics Co., Ltd. | Method and apparatus for sensing leakage current to estimate and possibly adjust flying height of a read-write head in a hard disk drive |
| US7558015B2 (en) * | 2006-03-29 | 2009-07-07 | Maxtor Corporation | Actuation efficiency based contact detection |
| US20080055772A1 (en) * | 2006-09-01 | 2008-03-06 | Mcmillan Chris | Method and apparatus for predicting contact of a read-write head in a hard disk drive |
| JP2008204561A (ja) * | 2007-02-21 | 2008-09-04 | Hitachi Global Storage Technologies Netherlands Bv | 情報記録装置 |
| US20080204922A1 (en) * | 2007-02-28 | 2008-08-28 | Motomu Hashizume | Methods and apparatus to monitor hard-disk drive head position |
| US7616398B2 (en) * | 2007-11-09 | 2009-11-10 | Hitachi Global Storage Technologies Netherlands B.V. | Fly height adjustment device calibration |
| US7788268B2 (en) * | 2008-01-08 | 2010-08-31 | International Business Machines Corporation | In-place sorting using node specific mask width |
| JP4986876B2 (ja) * | 2008-02-02 | 2012-07-25 | 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 |
| 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 |
| JP2011018396A (ja) * | 2009-07-08 | 2011-01-27 | Hitachi Global Storage Technologies Netherlands Bv | ディスク・ドライブ及びクリアランス測定方法 |
| US8169726B2 (en) * | 2010-07-19 | 2012-05-01 | Lsi Corporation | Disk file preamplifier frequency-response and time delay compensation |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5168413A (en) * | 1990-11-30 | 1992-12-01 | Ibm Corporation | Transducer head flying height monitoring methods and apparatus for disk drive system |
| US5220466A (en) * | 1991-05-21 | 1993-06-15 | International Business Machines Corporation | Method and apparatus for digital filter control in a partial-response maximum-likelihood disk drive system |
| JP2711207B2 (ja) * | 1992-05-19 | 1998-02-10 | 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 | クリアランス及び滑りの測定が可能でヘッド衝突の警告をするディスク・ファイル記憶装置及びクリアランス測定方法 |
| US5377058A (en) | 1992-12-31 | 1994-12-27 | International Business Machines Corporation | Fly height servo control of read/write head suspension |
| JPH0757376A (ja) * | 1993-08-18 | 1995-03-03 | Hitachi Ltd | 磁気ディスク装置及びディスクサブシステム |
| US5497085A (en) * | 1994-12-19 | 1996-03-05 | Conner Peripherals, Inc. | Method for determining an outer diameter rolloff in a process for making magnetic disks |
| JP3199996B2 (ja) * | 1995-11-15 | 2001-08-20 | 株式会社東芝 | ディスク記録再生システム及びそのヘッド浮上変動検出方法 |
| US5999360A (en) | 1996-10-15 | 1999-12-07 | Seagate Technology, Inc. | Disc drive servo system employing thermal signals |
| US6046596A (en) | 1996-11-13 | 2000-04-04 | Seagate Technology, Inc. | Capacitance probe for magnetic recording head transducer to disc surface spacing measurement |
| US5909330A (en) * | 1996-12-12 | 1999-06-01 | Maxtor Corporation | Method and apparatus for detecting head flying height in a disk drive |
| US6735027B2 (en) | 1998-06-02 | 2004-05-11 | Texas Instruments Incorporated | Head fly height by using the applied peak area ratio to determine signal PW50 |
| US6301797B1 (en) * | 1998-06-04 | 2001-10-16 | Seagate Technology Llc | Recognizing and compensating for disk shift in computer disk drives |
| US6411458B1 (en) * | 1999-04-23 | 2002-06-25 | Western Digital Technologies, Inc. | Disk drive employing method of monitoring transducer flying height to retire defective data site on recording surface |
| US6570730B1 (en) | 1999-06-09 | 2003-05-27 | Seagate Technology, Llc. | Shear-based transducer for HDD read/write element height control |
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2002
- 2002-08-15 US US10/219,893 patent/US6906878B2/en not_active Expired - Fee Related
-
2003
- 2003-08-07 JP JP2003206440A patent/JP4098681B2/ja not_active Expired - Fee Related
- 2003-08-07 EP EP03254919A patent/EP1396847B1/en not_active Expired - Fee Related
- 2003-08-07 DE DE60306052T patent/DE60306052T2/de not_active Expired - Fee Related
- 2003-08-11 TW TW092121996A patent/TW200410215A/zh unknown
- 2003-08-13 CN CNB031278876A patent/CN1314003C/zh not_active Expired - Fee Related
- 2003-08-14 KR KR1020030056577A patent/KR100591966B1/ko not_active IP Right Cessation
- 2003-08-15 SG SG200304442A patent/SG121786A1/en unknown
