CN103544965B - 利用温度传感器的频域特征确定头－盘接触和/或间距 - Google Patents
利用温度传感器的频域特征确定头－盘接触和/或间距 Download PDFInfo
- Publication number
- CN103544965B CN103544965B CN201310284501.2A CN201310284501A CN103544965B CN 103544965 B CN103544965 B CN 103544965B CN 201310284501 A CN201310284501 A CN 201310284501A CN 103544965 B CN103544965 B CN 103544965B
- Authority
- CN
- China
- Prior art keywords
- heater
- magnetic head
- spacing
- frequency domain
- magnetizing mediums
- 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.)
- Active
Links
- 230000004044 response Effects 0.000 claims abstract description 16
- 230000008859 change Effects 0.000 claims description 21
- 238000000034 method Methods 0.000 claims description 11
- 238000013500 data storage Methods 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 description 8
- 238000005259 measurement Methods 0.000 description 7
- 238000001514 detection method Methods 0.000 description 6
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- 230000033228 biological regulation Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 238000013019 agitation Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000033001 locomotion Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000006903 response to temperature Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B21/00—Head arrangements not specific to the method of recording or reproducing
- G11B21/02—Driving or moving of heads
-
- 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 |
|---|---|---|---|
| US13/544,559 US8848309B2 (en) | 2012-07-09 | 2012-07-09 | Determining head-to-disk contact and/or spacing using frequency domain signature of a temperature sensor |
| US13/544,559 | 2012-07-09 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103544965A CN103544965A (zh) | 2014-01-29 |
| CN103544965B true CN103544965B (zh) | 2018-03-30 |
Family
ID=48793874
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310284501.2A Active CN103544965B (zh) | 2012-07-09 | 2013-07-08 | 利用温度传感器的频域特征确定头－盘接触和/或间距 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US8848309B2 (enExample) |
| EP (1) | EP2685454B1 (enExample) |
| JP (1) | JP5813057B2 (enExample) |
| KR (1) | KR101469586B1 (enExample) |
| CN (1) | CN103544965B (enExample) |
Families Citing this family (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| US8523312B2 (en) | 2010-11-08 | 2013-09-03 | Seagate Technology Llc | Detection system using heating element temperature oscillations |
| WO2012068396A1 (en) | 2010-11-17 | 2012-05-24 | Seagate Technology Llc | Asperity and head-media contact detection using multi-stage temperature coefficient of resistance sensor |
| US9082440B2 (en) * | 2012-07-23 | 2015-07-14 | Seagate Technology Llc | Using first and second resistive sensor bias levels to detect head-to-disk contact and/or clearance |
| US8970978B1 (en) * | 2012-10-22 | 2015-03-03 | Western Digital Technologies, Inc. | Disk drive detecting head touchdown by applying DC+AC control signal to fly height actuator |
| US8638349B1 (en) * | 2013-03-11 | 2014-01-28 | Seagate Technology Llc | Head-medium contact detection using introduced heat oscillation |
| US9117474B1 (en) * | 2014-10-02 | 2015-08-25 | HGST Netherlands B.V. | Implementing write head device for contact detection and spacing sensing |
| US9472225B2 (en) | 2015-02-11 | 2016-10-18 | Seagate Technology Llc | Heat-assisted magnetic recording head-disk clearance setting |
| US9548072B2 (en) * | 2015-02-11 | 2017-01-17 | Seagate Technology Llc | Concurrent modulation and frictional heating head disk contact detection |
| 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 |
| US9245561B1 (en) * | 2015-03-24 | 2016-01-26 | Seagate Technology Llc | Apparatus and method for measuring surface charge of a slider |
| US9564163B2 (en) | 2015-04-03 | 2017-02-07 | Western Digital Technologies, Inc. | Implementing dual partially independent thermal flyheight control (TFC) for hard disk drives |
| US9721603B2 (en) | 2015-09-25 | 2017-08-01 | Seagate Technology Llc | Head-medium contact detection using an oscillating electromagnetic force |
| US9607642B1 (en) | 2016-01-27 | 2017-03-28 | Seagate Technology Llc | Head-medium contact detection using a thermal sensor and surface charge control of a slider |
| 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 |
| 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 |
| US10360935B1 (en) | 2018-05-22 | 2019-07-23 | Headway Technologies, Inc. | Dual write heater for slider surface topography control in double perpendicular magnetic recording (PMR) writers |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7092195B1 (en) * | 2004-05-28 | 2006-08-15 | Western Digital (Fremont), Inc. | Method of using a magnetic write head having an internal heater |
| CN1991985A (zh) * | 2005-12-27 | 2007-07-04 | 日立环球储存科技荷兰有限公司 | 校准和控制记录磁盘驱动器悬浮高度致动器的系统和方法 |
| EP2369583A1 (en) * | 2010-03-26 | 2011-09-28 | Samsung Electronics Co., Ltd. | Method and apparatus for detecting touch-down and contact between a head and a storage medium using a sensor, and a disk drive and storage medium using the method |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US12000A (en) * | 1854-11-28 | James newman | ||
| US7133254B2 (en) | 2003-05-30 | 2006-11-07 | Hitachi Global Storage Technologies Netherlands B.V. | Magnetic recording head with heating device |
| 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 |
| JP2008112545A (ja) * | 2006-10-31 | 2008-05-15 | Fujitsu Ltd | ヘッドスライダ支持機構の製造方法、ヘッドスライダおよび記憶装置 |
| JP2008186549A (ja) * | 2007-01-31 | 2008-08-14 | Toshiba Corp | 磁気ヘッド、およびこれを備えたディスク装置 |
| JP2009129532A (ja) * | 2007-11-28 | 2009-06-11 | Hitachi Ltd | 磁気ヘッドスライダ及び磁気ディスク装置 |
| US7660068B1 (en) | 2008-09-18 | 2010-02-09 | Hitachi Global Storage Technologies Netherlands B.V. | Method and system for pre-contact detection and active damping of air bearing vibrations in a hard disk drive |
| JP2010129157A (ja) * | 2008-11-29 | 2010-06-10 | Hitachi Global Storage Technologies Netherlands Bv | ディスク・ドライブ、ヘッド・スライダ及びディスク・ドライブにおける記録再生素子のクリアランス制御方法 |
| JP2010205368A (ja) * | 2009-03-05 | 2010-09-16 | Toshiba Storage Device Corp | タッチダウン判定装置、タッチダウン判定方法および磁気ディスク装置 |
| US8562729B2 (en) * | 2010-09-21 | 2013-10-22 | Sanford, L.P. | Highlighting ink formulation comprising an anti-smear agent |
| US8523312B2 (en) * | 2010-11-08 | 2013-09-03 | Seagate Technology Llc | Detection system using heating element temperature oscillations |
| WO2012068396A1 (en) * | 2010-11-17 | 2012-05-24 | Seagate Technology Llc | Asperity and head-media contact detection using multi-stage temperature coefficient of resistance sensor |
-
2012
- 2012-07-09 US US13/544,559 patent/US8848309B2/en active Active
-
2013
- 2013-06-26 EP EP13173883.3A patent/EP2685454B1/en not_active Not-in-force
- 2013-06-28 JP JP2013136342A patent/JP5813057B2/ja not_active Expired - Fee Related
- 2013-07-05 KR KR1020130079092A patent/KR101469586B1/ko not_active Expired - Fee Related
- 2013-07-08 CN CN201310284501.2A patent/CN103544965B/zh active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7092195B1 (en) * | 2004-05-28 | 2006-08-15 | Western Digital (Fremont), Inc. | Method of using a magnetic write head having an internal heater |
| CN1991985A (zh) * | 2005-12-27 | 2007-07-04 | 日立环球储存科技荷兰有限公司 | 校准和控制记录磁盘驱动器悬浮高度致动器的系统和方法 |
| EP2369583A1 (en) * | 2010-03-26 | 2011-09-28 | Samsung Electronics Co., Ltd. | Method and apparatus for detecting touch-down and contact between a head and a storage medium using a sensor, and a disk drive and storage medium using the method |
Also Published As
| Publication number | Publication date |
|---|---|
| KR101469586B1 (ko) | 2014-12-05 |
| US20140009851A1 (en) | 2014-01-09 |
| JP2014017045A (ja) | 2014-01-30 |
| US8848309B2 (en) | 2014-09-30 |
| JP5813057B2 (ja) | 2015-11-17 |
| CN103544965A (zh) | 2014-01-29 |
| KR20140007280A (ko) | 2014-01-17 |
| EP2685454B1 (en) | 2017-09-27 |
| EP2685454A1 (en) | 2014-01-15 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |