JP2014179159A5 - - Google Patents
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- JP2014179159A5 JP2014179159A5 JP2014051359A JP2014051359A JP2014179159A5 JP 2014179159 A5 JP2014179159 A5 JP 2014179159A5 JP 2014051359 A JP2014051359 A JP 2014051359A JP 2014051359 A JP2014051359 A JP 2014051359A JP 2014179159 A5 JP2014179159 A5 JP 2014179159A5
- Authority
- JP
- Japan
- Prior art keywords
- head
- flying height
- ecs
- slider
- tfc
- 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.)
- Granted
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- 238000005516 engineering process Methods 0.000 description 37
- 238000005259 measurement Methods 0.000 description 16
- 238000000034 method Methods 0.000 description 15
- 238000001514 detection method Methods 0.000 description 13
- 230000008859 change Effects 0.000 description 11
- 238000006243 chemical reaction Methods 0.000 description 10
- 239000000314 lubricant Substances 0.000 description 10
- 238000012544 monitoring process Methods 0.000 description 9
- 238000001816 cooling Methods 0.000 description 8
- 239000000725 suspension Substances 0.000 description 8
- 238000010438 heat treatment Methods 0.000 description 7
- 238000012545 processing Methods 0.000 description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 5
- 230000008021 deposition Effects 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 230000006698 induction Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005461 lubrication Methods 0.000 description 3
- 230000002411 adverse Effects 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 229910021385 hard carbon Inorganic materials 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000005339 levitation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000002572 peristaltic effect Effects 0.000 description 1
- 238000004886 process control Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000012876 topography Methods 0.000 description 1
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US13/830,776 | 2013-03-14 | ||
| US13/830,776 US8873191B2 (en) | 2013-03-14 | 2013-03-14 | Fly-height control and touchdown detection |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2014179159A JP2014179159A (ja) | 2014-09-25 |
| JP2014179159A5 true JP2014179159A5 (enExample) | 2015-07-09 |
| JP5967724B2 JP5967724B2 (ja) | 2016-08-10 |
Family
ID=51526053
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2014051359A Expired - Fee Related JP5967724B2 (ja) | 2013-03-14 | 2014-03-14 | 浮上高さ制御およびタッチダウン検出 |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US8873191B2 (enExample) |
| JP (1) | JP5967724B2 (enExample) |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9183864B1 (en) * | 2013-06-13 | 2015-11-10 | Western Digital Technologies, Inc. | Disk drive adjusting closed-loop fly height target based on change in open-loop fly height control signal |
| US9799358B2 (en) | 2013-09-25 | 2017-10-24 | Seagate Technolgy Llc | Detection and remediation of head contamination |
| US9916847B1 (en) | 2015-06-04 | 2018-03-13 | Seagate Technology Llc | Magnetic recording device capable of detecting contamination buildup at a head-disk interface |
| US9741375B2 (en) | 2015-11-19 | 2017-08-22 | Seagate Technology Llc | Slider trailing edge contamination sensor |
| US9460739B1 (en) * | 2015-11-30 | 2016-10-04 | HGST Netherlands B.V. | Monitoring and controlling the electrochemical wear at the head-disk interface |
| US9842614B2 (en) | 2016-03-01 | 2017-12-12 | Seagate Technology Llc | Heater design for fly height control |
| US10127950B1 (en) | 2017-05-09 | 2018-11-13 | Seagate Technology Llc | Data storage device with moving ambient temperature sensor |
| US9786309B1 (en) | 2017-06-06 | 2017-10-10 | Western Digital Technologies, Inc. | Data storage device detecting minimum stable fly height of a head over a disk |
| 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 |
| US10943615B2 (en) | 2018-12-20 | 2021-03-09 | Marvell Asia Pte, Ltd. | Differential interface transmission of fly-height control data |
| US10839843B1 (en) * | 2019-08-30 | 2020-11-17 | Sae Magnetics (H.K.) Ltd. | TD detection with enhanced HDIs signal |
| JP2022109629A (ja) * | 2021-01-15 | 2022-07-28 | 株式会社東芝 | 磁気ヘッドおよびこれを備えるディスク装置 |
| US12379198B2 (en) * | 2022-03-29 | 2025-08-05 | Stmicroelectronics S.R.L. | Circuit for biasing an external resistive sensor |
| US11961542B2 (en) | 2022-07-01 | 2024-04-16 | Western Digital Technologies, Inc. | Continuous dual path resistance detection for resistive temperature detectors in disk drives |
| US12487296B2 (en) | 2023-03-13 | 2025-12-02 | Western Digital Technologies, Inc. | Spin orbit torque based thermal sensor for insitu monitoring of magnetic recording head |
Family Cites Families (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02220279A (ja) * | 1989-02-21 | 1990-09-03 | Toshiba Corp | 磁気ディスク装置 |
| US5712747A (en) * | 1996-01-24 | 1998-01-27 | International Business Machines Corporation | Thin film slider with on-board multi-layer integrated circuit |
| JPH10233070A (ja) * | 1997-02-20 | 1998-09-02 | Sony Corp | 磁気ディスク装置 |
| US6288856B1 (en) | 1999-05-26 | 2001-09-11 | International Business Machines Corporation | Real-time head-to-disk clearance measuring method and apparatus |
| WO2002059880A2 (en) * | 2001-01-25 | 2002-08-01 | Seagate Technology Llc. | Integrated electrostatic slider fly height control |
| US6700724B2 (en) | 2001-08-22 | 2004-03-02 | Seagate Technology Llc | Contact detection and calibration for electrostatic fly height control in a disc drive |
| US7042670B2 (en) | 2003-07-11 | 2006-05-09 | Sae Magnetics (H.K.) Ltd. | Method for adjusting flying height of magnetic heads using an electrical charge through an electrical pad on the slider |
| US7233451B2 (en) | 2003-10-22 | 2007-06-19 | Hitachi Global Storage Technologies Netherlands B.V. | Method for actively controlling electric potential at the head/disk interface of a magnetic recording disk drive |
| JP2006085774A (ja) * | 2004-09-14 | 2006-03-30 | Shinka Jitsugyo Kk | スライダ浮上状態検出方法及びそれを用いた磁気ディスク装置 |
| JP2007294001A (ja) * | 2006-04-25 | 2007-11-08 | Hitachi Global Storage Technologies Netherlands Bv | ディスク・ドライブ装置及びその制御方法 |
| US7839595B1 (en) | 2008-01-25 | 2010-11-23 | Western Digital Technologies, Inc. | Feed forward compensation for fly height control in a disk drive |
| JP2009301637A (ja) | 2008-06-12 | 2009-12-24 | Fujitsu Ltd | ヘッド制御装置、ヘッド制御方法、磁気ディスク装置 |
| JP2010123231A (ja) * | 2008-11-21 | 2010-06-03 | Hitachi Global Storage Technologies Netherlands Bv | ディスク・ドライブ及びクリアランス制御方法 |
| JP5749434B2 (ja) | 2009-12-10 | 2015-07-15 | エイチジーエスティーネザーランドビーブイ | ディスク・ドライブ |
| US8599506B2 (en) | 2009-12-31 | 2013-12-03 | HGST Netherlands B.V. | Integrating control of slider bias potential, touch-down detection and fly-height determination in a HDD |
| US8085491B2 (en) * | 2010-02-26 | 2011-12-27 | Tdk Corporation | Method of determining flying height of magnetic head |
| US8059357B1 (en) | 2010-03-18 | 2011-11-15 | Western Digital Technologies, Inc. | Disk drive adjusting fly height when calibrating head/disk contact |
| KR101592195B1 (ko) * | 2010-03-26 | 2016-02-05 | 시게이트 테크놀로지 인터내셔날 | 센서를 이용한 터치-다운 및 헤드/미디어 접촉 검출 방법 및 장치와 이를 적용한 디스크 드라이브 및 저장매체 |
| JP5807069B2 (ja) * | 2010-11-17 | 2015-11-10 | シーゲイト テクノロジー エルエルシー | 抵抗センサの多段温度係数を使用した凹凸検知およびヘッドと媒体との接触検知 |
| US8792311B2 (en) * | 2011-02-08 | 2014-07-29 | Seagate Technology Llc | Transducer head temperature monitoring |
-
2013
- 2013-03-14 US US13/830,776 patent/US8873191B2/en active Active
-
2014
- 2014-03-14 JP JP2014051359A patent/JP5967724B2/ja not_active Expired - Fee Related
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