KR101469586B1 - 온도 센서의 주파수 도메인 시그니추어를 이용한 헤드-디스크 간 접촉 및/또는 간격의 결정 - Google Patents

온도 센서의 주파수 도메인 시그니추어를 이용한 헤드-디스크 간 접촉 및/또는 간격의 결정 Download PDF

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Publication number
KR101469586B1
KR101469586B1 KR1020130079092A KR20130079092A KR101469586B1 KR 101469586 B1 KR101469586 B1 KR 101469586B1 KR 1020130079092 A KR1020130079092 A KR 1020130079092A KR 20130079092 A KR20130079092 A KR 20130079092A KR 101469586 B1 KR101469586 B1 KR 101469586B1
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South Korea
Prior art keywords
heater
frequency
magnetic head
heater current
modulated
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Expired - Fee Related
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KR1020130079092A
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English (en)
Korean (ko)
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KR20140007280A (ko
Inventor
리차드 에이. 부데
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시게이트 테크놀로지 엘엘씨
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Publication of KR20140007280A publication Critical patent/KR20140007280A/ko
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    • 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

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  • Adjustment Of The Magnetic Head Position Track Following On Tapes (AREA)
KR1020130079092A 2012-07-09 2013-07-05 온도 센서의 주파수 도메인 시그니추어를 이용한 헤드-디스크 간 접촉 및/또는 간격의 결정 Expired - Fee Related KR101469586B1 (ko)

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
KR20140007280A KR20140007280A (ko) 2014-01-17
KR101469586B1 true KR101469586B1 (ko) 2014-12-05

Family

ID=48793874

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020130079092A Expired - Fee Related KR101469586B1 (ko) 2012-07-09 2013-07-05 온도 센서의 주파수 도메인 시그니추어를 이용한 헤드-디스크 간 접촉 및/또는 간격의 결정

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)

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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 (2)

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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
KR20110108181A (ko) * 2010-03-26 2011-10-05 삼성전자주식회사 센서를 이용한 터치-다운 및 헤드/미디어 접촉 검출 방법 및 장치와 이를 적용한 디스크 드라이브 및 저장매체

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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
US7092195B1 (en) * 2004-05-28 2006-08-15 Western Digital (Fremont), Inc. Method of using a magnetic write head having an internal heater
US7180692B1 (en) * 2005-12-27 2007-02-20 Hitachi Global Storage Technologies Netherlands B.V. System and method for calibrating and controlling a fly-height actuator in a magnetic recording disk drive
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

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Publication number Priority date Publication date Assignee Title
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
KR20110108181A (ko) * 2010-03-26 2011-10-05 삼성전자주식회사 센서를 이용한 터치-다운 및 헤드/미디어 접촉 검출 방법 및 장치와 이를 적용한 디스크 드라이브 및 저장매체

Also Published As

Publication number Publication date
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
CN103544965B (zh) 2018-03-30
EP2685454A1 (en) 2014-01-15

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