SG101498A1 - In-situ pressure sensor based on read head resistance - Google Patents

In-situ pressure sensor based on read head resistance

Info

Publication number
SG101498A1
SG101498A1 SG200106665A SG200106665A SG101498A1 SG 101498 A1 SG101498 A1 SG 101498A1 SG 200106665 A SG200106665 A SG 200106665A SG 200106665 A SG200106665 A SG 200106665A SG 101498 A1 SG101498 A1 SG 101498A1
Authority
SG
Singapore
Prior art keywords
pressure sensor
read head
sensor based
head resistance
situ pressure
Prior art date
Application number
SG200106665A
Other languages
English (en)
Inventor
Ray Gillis Donald
Lamberts Bernd
Victor Schouterden Kris
Original Assignee
Ibm
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 Ibm filed Critical Ibm
Publication of SG101498A1 publication Critical patent/SG101498A1/en

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
    • G11B19/02—Control of operating function, e.g. switching from recording to reproducing
    • G11B19/04—Arrangements for preventing, inhibiting, or warning against double recording on the same blank or against other recording or reproducing malfunctions
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
    • G01D5/14—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
    • G01D5/16—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying resistance
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B33/00—Constructional parts, details or accessories not provided for in the other groups of this subclass
    • G11B33/14—Reducing influence of physical parameters, e.g. temperature change, moisture, dust
    • G11B33/1486—Control/regulation of the pressure, e.g. the pressure inside the housing of a drive
    • 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
    • G11B5/012—Recording on, or reproducing or erasing from, magnetic disks
    • 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
    • G11B2005/0002—Special dispositions or recording techniques
    • G11B2005/0005—Arrangements, methods or circuits
    • G11B2005/0008—Magnetic conditionning of heads, e.g. biasing
    • 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
    • G11B2005/0002—Special dispositions or recording techniques
    • G11B2005/0005—Arrangements, methods or circuits
    • G11B2005/001—Controlling recording characteristics of record carriers or transducing characteristics of transducers by means not being part of their structure
    • G11B2005/0013—Controlling recording characteristics of record carriers or transducing characteristics of transducers by means not being part of their structure of transducers, e.g. linearisation, equalisation
    • G11B2005/0016—Controlling recording characteristics of record carriers or transducing characteristics of transducers by means not being part of their structure of transducers, e.g. linearisation, equalisation of magnetoresistive transducers
    • 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
    • G11B2005/0002—Special dispositions or recording techniques
    • G11B2005/0005—Arrangements, methods or circuits
    • G11B2005/0021—Thermally assisted recording using an auxiliary energy source for heating the recording layer locally to assist the magnetization reversal
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B33/00—Constructional parts, details or accessories not provided for in the other groups of this subclass
    • G11B33/10—Indicating arrangements; Warning arrangements
    • 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
    • G11B5/455—Arrangements for functional testing of heads; Measuring arrangements for heads
SG200106665A 2000-11-01 2001-10-29 In-situ pressure sensor based on read head resistance SG101498A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US09/704,420 US6603628B1 (en) 2000-11-01 2000-11-01 In-situ pressure sensor based on read head resistance

Publications (1)

Publication Number Publication Date
SG101498A1 true SG101498A1 (en) 2004-01-30

Family

ID=24829399

Family Applications (1)

Application Number Title Priority Date Filing Date
SG200106665A SG101498A1 (en) 2000-11-01 2001-10-29 In-situ pressure sensor based on read head resistance

Country Status (8)

Country Link
US (1) US6603628B1 (fr)
EP (1) EP1204117B1 (fr)
JP (1) JP2002197850A (fr)
KR (1) KR100445742B1 (fr)
CN (1) CN1148569C (fr)
DE (1) DE60112215T2 (fr)
SG (1) SG101498A1 (fr)
TW (1) TW591629B (fr)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4056291B2 (ja) * 2002-04-30 2008-03-05 富士通株式会社 ディスク装置
JP2004342141A (ja) * 2003-05-13 2004-12-02 Hitachi Ltd 磁気ディスク装置及びこの制御方法
KR100657947B1 (ko) * 2005-02-02 2006-12-14 삼성전자주식회사 높은 감도와 분해능을 갖는 전계 재생헤드(프로브) 및 그구동 방법
US7733595B2 (en) 2006-01-06 2010-06-08 Lucas Andrew A Hard disk drive with external sensor interface, system for use thereof and method
US7630157B1 (en) 2006-04-13 2009-12-08 Honda Motor Co., Ltd. Method of selecting an audio source
US7420760B2 (en) * 2006-06-23 2008-09-02 Samsung Electronics Co., Ltd. Method and apparatus reducing flying height drop in a hard disk drive under humid conditions
JP5000959B2 (ja) * 2006-09-19 2012-08-15 新科實業有限公司 気圧センサ及びこれを搭載したハードディスクドライブ、気圧センサの製造方法、気圧計測方法
US20080173089A1 (en) * 2007-01-19 2008-07-24 Seagate Technology Llc Transducing system with integrated environmental sensors
JP4795329B2 (ja) * 2007-12-03 2011-10-19 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 磁気ディスク装置およびその制御方法
US8947822B1 (en) 2009-06-04 2015-02-03 Western Digital Technologies, Inc. Disk drive adjusting fly height based on air density measured from rate of temperature change
US8687307B1 (en) 2010-11-18 2014-04-01 Western Digital Technologies, Inc. Disk drive detecting gas leaking from head disk assembly
US10074404B2 (en) 2016-11-28 2018-09-11 Western Digital Technologies, Inc. Pressure detection of hermetically sealed device
US11468918B1 (en) 2021-05-17 2022-10-11 Seagate Technology Llc Data storage drive pressure sensing using a head temperature sensor and a head heater

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4642715A (en) 1984-11-01 1987-02-10 Miltope Corporation Environmental conditioning and safety system for disk-type mass memories
US5455730A (en) 1993-02-18 1995-10-03 International Business Machines Corporation Contact magnetic recording disk file with a magnetoresistive read sensor
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
US5901001A (en) 1996-02-20 1999-05-04 Seagate Technology, Inc. Detection of asperities in recording surface of storage medium
US5764430A (en) 1996-04-01 1998-06-09 International Business Machines Corporation Disk drive having optimized spindle speed for environment
US5777815A (en) 1996-06-13 1998-07-07 International Business Machines Corporation Disk drive with shock detection based on thermoresistive signal from magnetoresistive head
JPH10177774A (ja) 1996-12-16 1998-06-30 Fujitsu Ltd ディスク装置及び携帯型電子装置
US6144178A (en) * 1999-08-05 2000-11-07 International Business Machines Corporation Disk drive with controlled reduced internal pressure

Also Published As

Publication number Publication date
TW591629B (en) 2004-06-11
CN1148569C (zh) 2004-05-05
KR100445742B1 (ko) 2004-08-25
JP2002197850A (ja) 2002-07-12
US6603628B1 (en) 2003-08-05
KR20020034869A (ko) 2002-05-09
EP1204117B1 (fr) 2005-07-27
DE60112215D1 (de) 2005-09-01
DE60112215T2 (de) 2006-06-01
CN1351251A (zh) 2002-05-29
EP1204117A1 (fr) 2002-05-08

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