CN103578485B - 利用第一和第二电阻式传感器偏置电平检测头‑盘接触和/或间隙 - Google Patents

利用第一和第二电阻式传感器偏置电平检测头‑盘接触和/或间隙 Download PDF

Info

Publication number
CN103578485B
CN103578485B CN201310293831.8A CN201310293831A CN103578485B CN 103578485 B CN103578485 B CN 103578485B CN 201310293831 A CN201310293831 A CN 201310293831A CN 103578485 B CN103578485 B CN 103578485B
Authority
CN
China
Prior art keywords
resistance
magnetic sensor
sensor
medium
spacing
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
Application number
CN201310293831.8A
Other languages
English (en)
Chinese (zh)
Other versions
CN103578485A (zh
Inventor
M·T·约翰逊
杜弗瑞斯恩 M·C·艾纳亚
郑譞
D·刘
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Seagate Technology LLC
Original Assignee
Seagate Technology LLC
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Seagate Technology LLC filed Critical Seagate Technology LLC
Publication of CN103578485A publication Critical patent/CN103578485A/zh
Application granted granted Critical
Publication of CN103578485B publication Critical patent/CN103578485B/zh
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • G11B5/127—Structure or manufacture of heads, e.g. inductive
    • G11B5/33—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only
    • G11B5/39—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only using magneto-resistive devices or effects
    • 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
    • G11B21/00—Head arrangements not specific to the method of recording or reproducing
    • G11B21/16—Supporting the heads; Supporting the sockets for plug-in heads
    • G11B21/20—Supporting the heads; Supporting the sockets for plug-in heads while the head is in operative position but stationary or permitting minor movements to follow irregularities in surface of record carrier
    • G11B21/21—Supporting the heads; Supporting the sockets for plug-in heads while the head is in operative position but stationary or permitting minor movements to follow irregularities in surface of record carrier with provision for maintaining desired spacing of head from record carrier, e.g. fluid-dynamic spacing, slider
    • 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

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Adjustment Of The Magnetic Head Position Track Following On Tapes (AREA)
  • Digital Magnetic Recording (AREA)
  • Recording Or Reproducing By Magnetic Means (AREA)
  • Investigating Or Analyzing Materials Using Thermal Means (AREA)
  • Magnetic Heads (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
CN201310293831.8A 2012-07-23 2013-07-12 利用第一和第二电阻式传感器偏置电平检测头‑盘接触和/或间隙 Active CN103578485B (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US13/555,581 2012-07-23
US13/555,581 US9082440B2 (en) 2012-07-23 2012-07-23 Using first and second resistive sensor bias levels to detect head-to-disk contact and/or clearance

Publications (2)

Publication Number Publication Date
CN103578485A CN103578485A (zh) 2014-02-12
CN103578485B true CN103578485B (zh) 2017-04-12

Family

ID=48782168

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201310293831.8A Active CN103578485B (zh) 2012-07-23 2013-07-12 利用第一和第二电阻式传感器偏置电平检测头‑盘接触和/或间隙

Country Status (5)

Country Link
US (1) US9082440B2 (enExample)
EP (1) EP2690625A3 (enExample)
JP (1) JP5927148B2 (enExample)
KR (1) KR101502838B1 (enExample)
CN (1) CN103578485B (enExample)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8810952B2 (en) 2010-11-17 2014-08-19 Seagate Technology Llc Head transducer with multiple resistance temperature sensors for head-medium spacing and contact detection
US8941941B1 (en) * 2013-02-28 2015-01-27 Western Digital Technologies, Inc. Disk drive calibrating touchdown sensor
US8902533B1 (en) * 2013-08-30 2014-12-02 Western Digital Technologies, Inc. Disk drive detecting different asperities on a disk using different sensor bias settings
US9558773B2 (en) * 2014-12-04 2017-01-31 Seagate Technology Llc Apparatus and method for setting slider surface potential
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
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
US9607649B1 (en) * 2016-04-08 2017-03-28 Seagate Technology Llc Determining write-induced protrusion as a function of laser power using temperature measurements
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
KR102675691B1 (ko) * 2017-11-15 2024-06-14 카프레스 에이/에스 테스트 샘플의 전기적 특성을 테스트하기 위한 프로브 및 연관된 근접성 검출기
US11874182B1 (en) 2022-06-30 2024-01-16 Western Digital Technologies, Inc. Alternating-bias signal resistance detection for resistive temperature detectors in disk drives

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1609999A (zh) * 2003-10-22 2005-04-27 日立环球储存科技荷兰有限公司 在头/盘接口具有主动受控电位的磁记录盘驱动器

Family Cites Families (45)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5527110A (en) 1993-04-30 1996-06-18 International Business Machines Corporation Method and apparatus for detecting asperities on magnetic disks using thermal proximity imaging
US5991113A (en) 1997-04-07 1999-11-23 Seagate Technology, Inc. Slider with temperature responsive transducer positioning
JP2003515865A (ja) * 1999-12-02 2003-05-07 シーゲイト テクノロジー エルエルシー パターン化した媒体の上方のフライ高さ制御
US6963464B2 (en) * 2000-10-26 2005-11-08 Hitachi Global Storage Technologies Japan, Ltd. Magnetic head heating element in a disk drive
CN1220182C (zh) * 2001-01-25 2005-09-21 西加特技术有限责任公司 集成型静电滑动臂飞行高度控制法
US6623158B2 (en) 2001-06-15 2003-09-23 International Business Machines Corporation Method and apparatus for thermal proximity imaging using pulsed energy
US7130141B2 (en) * 2003-03-31 2006-10-31 Hitachi Global Storage Technologies Netherlands B.V. Assembly for thermal and/or thermally-assisted information processing
JP2004342151A (ja) * 2003-05-13 2004-12-02 Hitachi Global Storage Technologies Inc 磁気ヘッドスライダの浮上制御方法および磁気ディスク装置
US7133254B2 (en) 2003-05-30 2006-11-07 Hitachi Global Storage Technologies Netherlands B.V. Magnetic recording head with heating device
US7310194B1 (en) * 2004-04-08 2007-12-18 Maxtor Corporation System for monitoring and dynamically adjusting head-to-disk spacing in a disk drive
US7495856B2 (en) * 2004-10-29 2009-02-24 Hitachi Global Storage Technologies Netherlands B.V. Disk drive slider design for thermal fly-height control and burnishing-on-demand
JP2006164388A (ja) * 2004-12-07 2006-06-22 Hitachi Global Storage Technologies Netherlands Bv 磁気ヘッドスライダの浮上量制御方法および磁気ディスク装置
JP4979894B2 (ja) * 2005-03-25 2012-07-18 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 磁気ディスク装置
JP2007042239A (ja) * 2005-08-04 2007-02-15 Hitachi Global Storage Technologies Netherlands Bv 磁気ディスク装置及び磁気ディスク装置の製造方法
JP4379814B2 (ja) * 2006-03-28 2009-12-09 富士通株式会社 記憶装置、制御方法、制御装置及びプログラム
JP4439483B2 (ja) * 2006-03-28 2010-03-24 東芝ストレージデバイス株式会社 記憶装置、制御装置、制御方法及びプログラム
US7477470B2 (en) * 2006-03-29 2009-01-13 Seagate Technology Llc Controlling head flying height based on head heater resistance
JP2007310978A (ja) * 2006-05-19 2007-11-29 Fujitsu Ltd ヘッド浮上量制御方法及び装置、記憶装置及びプログラム
JP4908106B2 (ja) * 2006-08-18 2012-04-04 東芝ストレージデバイス株式会社 記憶装置、制御方法、制御装置及びプログラム
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
JP2008186563A (ja) * 2007-01-31 2008-08-14 Toshiba Corp ディスク記憶装置及びスペーシング制御方法
KR100864401B1 (ko) * 2007-02-16 2008-10-23 삼성전자주식회사 하드디스크 드라이브, 하드디스크 드라이브의 자기 헤드의부상높이 제어 방법 및 그 방법을 수행하는 컴퓨터프로그램을 기록한 기록매체
US7589928B2 (en) * 2007-03-16 2009-09-15 Seagate Technology Llc Magnetic recording device including a thermal proximity sensor
US7808734B2 (en) * 2007-08-20 2010-10-05 Hitachi Global Storage Technologies Netherlands B.V. Monitoring a fly height of a magnetic transducer
KR101482292B1 (ko) * 2007-12-14 2015-01-13 엘에스아이 코포레이션 서보 어드레스 마크 데이터를 사용하는 플라이―하이트 제어를 위한 시스템들 및 방법들
EP2227808A4 (en) * 2007-12-14 2013-12-18 Lsi Corp SYSTEM AND METHOD FOR ADJUSTING THE OVERLIGHT HEIGHT USING ASSISTANT DATA
US7508618B1 (en) * 2007-12-27 2009-03-24 Hitachi Global Storage Tech Nl Multivariate head-to-disk contact detection
JP4940208B2 (ja) * 2008-09-11 2012-05-30 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・ドライブ及びクリアランス変化を測定する方法
US7787201B2 (en) * 2008-12-05 2010-08-31 Hitachi Global Storage Technologies Netherlands B.V. Method and apparatus for controlling fly-height of a perpendicular-magnetic-recording head in a hard disk drive
US8297113B2 (en) * 2009-03-16 2012-10-30 Seagate Technology Llc Media certification device design
US7796356B1 (en) * 2009-05-04 2010-09-14 Western Digital (Fremont), Llc Head integrated touchdown sensor for hard disk drives
US7800858B1 (en) 2009-05-04 2010-09-21 Western Digital (Fremont), Llc Differential head integrated touchdown sensors for hard disk drives
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
KR101042191B1 (ko) 2009-08-17 2011-06-20 백경물산주식회사 차량용 전기전자제품에서의 전원 제어 방법
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
US8098450B2 (en) 2009-12-31 2012-01-17 Hitachi Global Storage Technologies, Netherlands B.V. Fly-height management in a hard disk drive (HDD)
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
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
US8514672B2 (en) * 2010-08-24 2013-08-20 HGST Netherlands B.V. Near-field transducer with thermal sensor and system for clocking write data in a patterned-media magnetic recording disk drive
US8810952B2 (en) 2010-11-17 2014-08-19 Seagate Technology Llc Head transducer with multiple resistance temperature sensors for head-medium spacing and contact detection
US8792311B2 (en) * 2011-02-08 2014-07-29 Seagate Technology Llc Transducer head temperature monitoring
US8451696B2 (en) * 2011-10-31 2013-05-28 HGST Netherlands B.V. Temperature sensor in a thermally assisted magnetic recording head
JP2013109819A (ja) * 2011-11-17 2013-06-06 Seagate Technology Llc ヘッド−媒体の接触を検出するための装置および方法
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

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1609999A (zh) * 2003-10-22 2005-04-27 日立环球储存科技荷兰有限公司 在头/盘接口具有主动受控电位的磁记录盘驱动器

Also Published As

Publication number Publication date
US20140023108A1 (en) 2014-01-23
JP2014022036A (ja) 2014-02-03
KR20140012905A (ko) 2014-02-04
JP5927148B2 (ja) 2016-05-25
CN103578485A (zh) 2014-02-12
US9082440B2 (en) 2015-07-14
EP2690625A3 (en) 2014-05-07
EP2690625A2 (en) 2014-01-29
KR101502838B1 (ko) 2015-03-16

Similar Documents

Publication Publication Date Title
US9082440B2 (en) Using first and second resistive sensor bias levels to detect head-to-disk contact and/or clearance
CN103544965B (zh) 利用温度传感器的频域特征确定头－盘接触和/或间距
JP5779252B2 (ja) ヘッドと媒体との間隔および接触を検知するための複数の抵抗温度センサを有するヘッドトランスデューサ
US9607659B2 (en) Detection system using heating element temperature oscillations
JP2014017045A5 (enExample)
US9093084B2 (en) Flexible biasing strategy for ground-split TCR sensors
CN105006236A (zh) 利用电磁引力的头-介质接触检测
Matthes et al. Head-disk proximity sensing using contact sensors in hard disk drives
TW201337920A (zh) 用於改善粗糙度，探頭至介質的間距，及／或探頭至介質的接觸偵測之電阻式溫度感測器

Legal Events

Date Code Title Description
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