CN104050985B - 利用引入热振荡的磁头介质接触检测的装置和方法 - Google Patents
利用引入热振荡的磁头介质接触检测的装置和方法 Download PDFInfo
- Publication number
- CN104050985B CN104050985B CN201410085239.3A CN201410085239A CN104050985B CN 104050985 B CN104050985 B CN 104050985B CN 201410085239 A CN201410085239 A CN 201410085239A CN 104050985 B CN104050985 B CN 104050985B
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- China
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- sensor
- heater
- head
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- power
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- 238000001514 detection method Methods 0.000 title claims abstract description 37
- 230000010355 oscillation Effects 0.000 title claims abstract description 24
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- 238000011896 sensitive detection Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 230000002463 transducing effect Effects 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- 238000013500 data storage Methods 0.000 description 2
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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
- G11B5/581—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 maintaining desired contact or spacing by direct interaction of forces generated between heads or supports thereof and record carriers or supports thereof, e.g. attraction-repulsion interactions
-
- 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
- G11B5/60—Fluid-dynamic spacing of heads from record-carriers
- G11B5/6005—Specially adapted for spacing from a rotating disc using a fluid cushion
- G11B5/6011—Control of flying height
- G11B5/607—Control of flying height using thermal means
-
- 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
- G11B5/60—Fluid-dynamic spacing of heads from record-carriers
- G11B5/6005—Specially adapted for spacing from a rotating disc using a fluid cushion
- G11B5/6011—Control of flying height
- G11B5/6076—Detecting head-disk contact
Landscapes
- Adjustment Of The Magnetic Head Position Track Following On Tapes (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US13/793,803 | 2013-03-11 | ||
| US13/793,803 US8638349B1 (en) | 2013-03-11 | 2013-03-11 | Head-medium contact detection using introduced heat oscillation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104050985A CN104050985A (zh) | 2014-09-17 |
| CN104050985B true CN104050985B (zh) | 2018-04-13 |
Family
ID=49957952
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410085239.3A Active CN104050985B (zh) | 2013-03-11 | 2014-03-10 | 利用引入热振荡的磁头介质接触检测的装置和方法 |
Country Status (4)
| Country | Link |
|---|---|
| US (2) | US8638349B1 (enExample) |
| JP (1) | JP6121929B2 (enExample) |
| KR (1) | KR101553931B1 (enExample) |
| CN (1) | CN104050985B (enExample) |
Families Citing this family (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8638349B1 (en) | 2013-03-11 | 2014-01-28 | Seagate Technology Llc | Head-medium contact detection using introduced heat oscillation |
| US8804263B1 (en) * | 2013-08-30 | 2014-08-12 | HGST Netherlands B.V. | DC-offset adjustment for balanced embedded contact sensor |
| US8995076B1 (en) * | 2014-04-21 | 2015-03-31 | Seagate Technology Llc | Head-medium contact detection using electromagnetic attraction |
| US9117474B1 (en) * | 2014-10-02 | 2015-08-25 | HGST Netherlands B.V. | Implementing write head device for contact detection and spacing sensing |
| US9548072B2 (en) * | 2015-02-11 | 2017-01-17 | Seagate Technology Llc | Concurrent modulation and frictional heating head disk contact detection |
| US9472225B2 (en) | 2015-02-11 | 2016-10-18 | Seagate Technology Llc | Heat-assisted magnetic recording head-disk clearance setting |
| US9595280B2 (en) * | 2015-02-26 | 2017-03-14 | Western Digital Technologies, Inc | Hard disk drive head-disk interface dithering |
| US9443543B1 (en) * | 2015-03-11 | 2016-09-13 | Kabushiki Kaisha Toshiba | Disk storage device and method for controlling head flying height |
| US9881642B2 (en) * | 2015-03-31 | 2018-01-30 | Seagate Technology Llc | Disk surface defect detection |
| US9437234B1 (en) | 2015-08-20 | 2016-09-06 | Seagate Technology Llc | Head-medium contact detection using high frequency heater oscillation |
| US9761270B1 (en) | 2016-12-21 | 2017-09-12 | Seagate Technology Llc | Data storage device using high and low frequencies AC heat produce position-error-signals for head contact detection |
| US9865292B1 (en) | 2017-02-28 | 2018-01-09 | Seagate Technology Llc | Contact detection using modulated writer coil current for a heat-assisted magnetic recording slider |
| 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 |
| US9928873B1 (en) | 2017-06-30 | 2018-03-27 | Seagate Technology Llc | Head-disk contact detection using a thermal sensor for modulation air bearings |
| US9990950B1 (en) | 2017-07-17 | 2018-06-05 | Seagate Technology Llc | Calibration and adjusting target pre-write clearance offset for a heat-assisted magnetic recording device |
| US11305397B2 (en) | 2018-06-18 | 2022-04-19 | Seagate Technology Llc | Lapping system that includes a lapping plate temperature control system, and related methods |
| US11389924B2 (en) | 2018-06-18 | 2022-07-19 | Seagate Technology Llc | Methods of lapping while heating one or more features, and related sliders, row bars, and systems |
| JP2020027675A (ja) * | 2018-08-13 | 2020-02-20 | 株式会社東芝 | 磁気ディスク装置用の熱アクチュエータ制御値の設定方法 |
| US11331765B1 (en) | 2019-04-12 | 2022-05-17 | Seagate Technology Llc | Methods of lapping a substrate while heating at least a portion of the substrate, and related substrates and systems |
| JP2022116888A (ja) | 2021-01-29 | 2022-08-10 | 株式会社東芝 | 磁気ディスク装置、及び磁気ディスク装置の接触検出方法 |
| US12176015B1 (en) * | 2023-10-19 | 2024-12-24 | Western Digital Technologies, Inc. | Pole tip recession compensation by dual heater ratio optimization in a hard disk drive |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012068399A1 (en) * | 2010-11-17 | 2012-05-24 | Seagate Technology Llc | Head transducer with multiple resistance temperature sensors for head-medium spacing and contact detection |
| WO2012118583A1 (en) * | 2011-02-28 | 2012-09-07 | Seagate Technology Llc | Contact detection |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030058559A1 (en) * | 2001-09-27 | 2003-03-27 | Seagate Technology Llc | Gap fly height sensing using thermal load response |
| JP2008097760A (ja) * | 2006-10-13 | 2008-04-24 | Fujitsu Ltd | ヘッドスライダ用接触判定装置および接触判定方法並びに記憶媒体駆動装置 |
| US7589928B2 (en) * | 2007-03-16 | 2009-09-15 | Seagate Technology Llc | Magnetic recording device including a thermal proximity sensor |
| US7800858B1 (en) | 2009-05-04 | 2010-09-21 | Western Digital (Fremont), Llc | Differential head integrated touchdown sensors for hard disk drives |
| US8098450B2 (en) | 2009-12-31 | 2012-01-17 | Hitachi Global Storage Technologies, Netherlands B.V. | Fly-height management in a hard disk drive (HDD) |
| KR20110108180A (ko) * | 2010-03-26 | 2011-10-05 | 삼성전자주식회사 | 헤드의 터치-다운 검출 방법 및 이를 이용한 헤드 부상 높이 조정 방법 및 디스크 드라이브 |
| 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 |
| US20120050907A1 (en) | 2010-08-26 | 2012-03-01 | Seagate Technology Llc | Detection of proximity between a sensor and an object |
| US8773801B2 (en) * | 2010-10-21 | 2014-07-08 | HGST Netherlands B.V. | Magnetic-recording head with first thermal fly-height control element and embedded contact sensor element configurable as second thermal fly-height control element |
| US8523312B2 (en) * | 2010-11-08 | 2013-09-03 | Seagate Technology Llc | Detection system using heating element temperature oscillations |
| US8792311B2 (en) * | 2011-02-08 | 2014-07-29 | Seagate Technology Llc | Transducer head temperature monitoring |
| US8879189B2 (en) * | 2012-01-25 | 2014-11-04 | HGST Netherlands B.V. | Magnetic head slider having shared heater and contact sensor terminal pads |
| US8736996B2 (en) * | 2012-05-18 | 2014-05-27 | HGST Netherlands B.V. | Implementing channel signal processing assist with ECS contact detection |
| US8848309B2 (en) * | 2012-07-09 | 2014-09-30 | Seagate Technology Llc | Determining head-to-disk contact and/or spacing using frequency domain signature of a temperature sensor |
| US8638349B1 (en) | 2013-03-11 | 2014-01-28 | Seagate Technology Llc | Head-medium contact detection using introduced heat oscillation |
-
2013
- 2013-03-11 US US13/793,803 patent/US8638349B1/en active Active
-
2014
- 2014-01-28 US US14/165,906 patent/US9047898B2/en active Active
- 2014-03-06 KR KR1020140026637A patent/KR101553931B1/ko not_active Expired - Fee Related
- 2014-03-10 JP JP2014046227A patent/JP6121929B2/ja active Active
- 2014-03-10 CN CN201410085239.3A patent/CN104050985B/zh active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012068399A1 (en) * | 2010-11-17 | 2012-05-24 | Seagate Technology Llc | Head transducer with multiple resistance temperature sensors for head-medium spacing and contact detection |
| WO2012118583A1 (en) * | 2011-02-28 | 2012-09-07 | Seagate Technology Llc | Contact detection |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104050985A (zh) | 2014-09-17 |
| US8638349B1 (en) | 2014-01-28 |
| US20140254040A1 (en) | 2014-09-11 |
| KR20140111608A (ko) | 2014-09-19 |
| JP2014175043A (ja) | 2014-09-22 |
| KR101553931B1 (ko) | 2015-09-17 |
| JP6121929B2 (ja) | 2017-04-26 |
| US9047898B2 (en) | 2015-06-02 |
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Legal Events
| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |