DE19983342T1 - Erfassung einer verminderten Kopfbesetzung in einem Plattenlaufwerk - Google Patents

Erfassung einer verminderten Kopfbesetzung in einem Plattenlaufwerk

Info

Publication number
DE19983342T1
DE19983342T1 DE19983342T DE19983342T DE19983342T1 DE 19983342 T1 DE19983342 T1 DE 19983342T1 DE 19983342 T DE19983342 T DE 19983342T DE 19983342 T DE19983342 T DE 19983342T DE 19983342 T1 DE19983342 T1 DE 19983342T1
Authority
DE
Germany
Prior art keywords
detection
disk drive
reduced head
occupation
head occupation
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.)
Withdrawn
Application number
DE19983342T
Other languages
English (en)
Inventor
Timothy T Walker
Robert Matousek
Matthew G Burton
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 DE19983342T1 publication Critical patent/DE19983342T1/de
Withdrawn legal-status Critical Current

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
    • G11B5/48—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
    • 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
    • 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
    • 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
    • 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
    • G11B5/455—Arrangements for functional testing of heads; Measuring arrangements for 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
    • G11B5/488—Disposition of heads
    • G11B5/4886—Disposition of heads relative to rotating disc
DE19983342T 1998-07-02 1999-07-01 Erfassung einer verminderten Kopfbesetzung in einem Plattenlaufwerk Withdrawn DE19983342T1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US9155598P 1998-07-02 1998-07-02
US09/271,541 US6373649B1 (en) 1998-07-02 1999-03-18 Reduced head population detection in a disc drive
PCT/US1999/015088 WO2000002192A1 (en) 1998-07-02 1999-07-01 Reduced head population detection in a disc drive

Publications (1)

Publication Number Publication Date
DE19983342T1 true DE19983342T1 (de) 2001-05-31

Family

ID=26784079

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19983342T Withdrawn DE19983342T1 (de) 1998-07-02 1999-07-01 Erfassung einer verminderten Kopfbesetzung in einem Plattenlaufwerk

Country Status (7)

Country Link
US (1) US6373649B1 (de)
JP (1) JP3813819B2 (de)
KR (1) KR100370462B1 (de)
CN (1) CN1317136A (de)
DE (1) DE19983342T1 (de)
GB (1) GB2358517B (de)
WO (1) WO2000002192A1 (de)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6650501B2 (en) * 2001-07-05 2003-11-18 Seagate Technology Llc Higher inter-disc separations to improve disc drive actuator servo performance
DE10160139A1 (de) * 2001-12-07 2003-06-18 Bayer Cropscience Gmbh Synergistische herbizide Mittel enthaltend bestimmte Herbizide aus der Gruppe der Benzoylcylohexandione
US20040245984A1 (en) * 2003-06-03 2004-12-09 Nathen Barton Apparatus and method for characterizing impedance presented to a write driver in a write head assembly
US8289015B2 (en) * 2008-04-14 2012-10-16 Seagate Technology Llc Apparatus and test method for a head assembly in a depopulated configuration
US8773787B1 (en) 2012-03-29 2014-07-08 Western Digital Technologies, Inc. Changing the performance level of a disk drive
US8879191B1 (en) 2012-11-14 2014-11-04 Western Digital Technologies, Inc. Disk drive modifying rotational position optimization algorithm to achieve target performance for limited stroke
US9251856B1 (en) 2014-05-30 2016-02-02 Western Digial Technologies, Inc. Read failover method and apparatus for a data storage system
US9251844B1 (en) 2014-06-02 2016-02-02 Western Digital Technologies, Inc. Waterfall method and apparatus for a data storage device read system
US9865301B1 (en) 2015-12-11 2018-01-09 Seagate Technology Llc Selectable magnetic writers of different target geometries for reducing performance variance
US9990941B1 (en) 2016-11-14 2018-06-05 Seagate Technology Llc Selectable readers for improvements in yield, reliability and performance
US10049690B1 (en) 2017-08-08 2018-08-14 Seagate Technology Llc Selectable readers for better performance
US10600435B2 (en) 2017-11-15 2020-03-24 Seagate Technology Llc Recording head gimbal assembly programming by selective application of interconnects
US10930307B2 (en) * 2019-01-14 2021-02-23 Western Digital Technologies, Inc. Piezoelectric-based locking of actuator elevator mechanism for cold storage data storage device
JP7234176B2 (ja) * 2020-03-17 2023-03-07 株式会社東芝 磁気ディスク装置及びＤｅｐｏｐ処理方法
US11081132B1 (en) * 2020-03-31 2021-08-03 Western Digital Technologies, Inc. Tape embedded drive with HDD components

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JPS59185069A (ja) 1983-04-04 1984-10-20 Mitsubishi Electric Corp 記録媒体読み出し制御システム
US4799112A (en) 1987-02-19 1989-01-17 Magnetic Peripherals Inc. Method and apparatus for recording data
EP0449530A3 (en) 1990-03-23 1993-09-01 Canon Kabushiki Kaisha A memory medium having a control program memorized therein and an information processing method and an information processing apparatus using the same medium
US5087884A (en) * 1990-06-28 1992-02-11 Vtc Bipolar Corporation Open head detection circuit and method
US5276558A (en) 1991-03-18 1994-01-04 Rimage Corporation Electronic information tag
US5262907A (en) 1991-07-31 1993-11-16 Seagate Technology, Inc. Hard disc drive with improved servo system
US5375243A (en) 1991-10-07 1994-12-20 Compaq Computer Corporation Hard disk password security system
JPH05341918A (ja) 1992-05-12 1993-12-24 Internatl Business Mach Corp <Ibm> 二重化デイスク記憶装置システムを構成するための接続装置
US5276662A (en) 1992-10-01 1994-01-04 Seagate Technology, Inc. Disc drive with improved data transfer management apparatus
US5465240A (en) 1993-01-05 1995-11-07 Mankovitz; Roy J. Apparatus and methods for displaying text in conjunction with recorded audio programs
US5644767A (en) 1993-06-01 1997-07-01 At&T Global Information Solutions Company Method and apparatus for determining and maintaining drive status from codes written to disk drives of an arrayed storage subsystem
US5732237A (en) 1993-12-24 1998-03-24 Fujitsu Ten Limited Security system for audio equipment where identification data from a compact disc is stored in memory
US5625841A (en) 1994-04-20 1997-04-29 International Business Machines Corporation Data processing system
US5550502A (en) 1995-05-23 1996-08-27 Gec Plessey Semiconductors, Inc. Control circuit and method for thin film head writed river
US5589777A (en) 1995-06-21 1996-12-31 Hewlett-Packard Company Circuit and method for testing a disk drive head assembly without probing
US5751672A (en) 1995-07-26 1998-05-12 Sony Corporation Compact disc changer utilizing disc database
US5631999A (en) 1995-09-06 1997-05-20 Seagate Technology Inc. Adaptive compensation for hard disc drive spindle motor manufacturing tolerances
JP2773714B2 (ja) * 1995-10-26 1998-07-09 ティーディーケイ株式会社 磁気抵抗効果素子を有する磁気ヘッドの検査方法及び装置
US5726821A (en) * 1995-12-22 1998-03-10 Western Digital Corporation Programmable preamplifier unit with serial interface for disk data storage device using MR heads
US5710675A (en) * 1996-05-29 1998-01-20 Western Digital Corporation Analog-to-digital converter for configuration control
JPH10188207A (ja) * 1996-12-20 1998-07-21 Fujitsu Ltd 磁気ディスク装置
US6057981A (en) * 1997-09-23 2000-05-02 Seagate Technology, Inc. Product information identification in a head disc assembly

Also Published As

Publication number Publication date
WO2000002192A1 (en) 2000-01-13
KR20010053368A (ko) 2001-06-25
GB0031100D0 (en) 2001-01-31
GB2358517A (en) 2001-07-25
JP2002520757A (ja) 2002-07-09
CN1317136A (zh) 2001-10-10
GB2358517B (en) 2002-11-06
US6373649B1 (en) 2002-04-16
JP3813819B2 (ja) 2006-08-23
KR100370462B1 (ko) 2003-01-30

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Legal Events

Date Code Title Description
OP8 Request for examination as to paragraph 44 patent law
8127 New person/name/address of the applicant

Owner name: SEAGATE TECHNOLOGY LLC, SCOTTS VALLEY, CALIF., US

8139 Disposal/non-payment of the annual fee