SG83772A1 - Retract circuit and retract method, and disk drive - Google Patents

Retract circuit and retract method, and disk drive

Info

Publication number
SG83772A1
SG83772A1 SG200000797A SG200000797A SG83772A1 SG 83772 A1 SG83772 A1 SG 83772A1 SG 200000797 A SG200000797 A SG 200000797A SG 200000797 A SG200000797 A SG 200000797A SG 83772 A1 SG83772 A1 SG 83772A1
Authority
SG
Singapore
Prior art keywords
retract
disk drive
circuit
retract circuit
retract method
Prior art date
Application number
SG200000797A
Other languages
English (en)
Inventor
Kuroki Kenji
Robert Albrecht Thomas
Sai Fuminori
Nakagawa Yuzo
Koide Nobuhisa
Murai Masashi
Takahashi Keishi
Clark Reiley Timothy
H Klassen Erno
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 SG83772A1 publication Critical patent/SG83772A1/en

Links

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
    • G11B21/12—Raising and lowering; Back-spacing or forward-spacing along track; Returning to starting position otherwise than during transducing operation
    • 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
    • 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
SG200000797A 1999-03-08 2000-02-14 Retract circuit and retract method, and disk drive SG83772A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP05998199A JP3494584B2 (ja) 1999-03-08 1999-03-08 リトラクト回路およびリトラクト方法ならびにディスク装置

Publications (1)

Publication Number Publication Date
SG83772A1 true SG83772A1 (en) 2001-10-16

Family

ID=13128870

Family Applications (1)

Application Number Title Priority Date Filing Date
SG200000797A SG83772A1 (en) 1999-03-08 2000-02-14 Retract circuit and retract method, and disk drive

Country Status (4)

Country Link
US (1) US6643087B1 (ko)
JP (1) JP3494584B2 (ko)
KR (1) KR100379727B1 (ko)
SG (1) SG83772A1 (ko)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100396483B1 (ko) * 2000-12-27 2003-09-02 페어차일드코리아반도체 주식회사 하드 디스크 드라이브의 헤드 복귀 회로
JP2004064971A (ja) * 2002-07-31 2004-02-26 Toshiba Corp ディスク記憶装置、同装置に適用されるスピンドルモータドライバ及びスピンドルモータ駆動方法
JP4226998B2 (ja) * 2003-11-20 2009-02-18 株式会社東芝 ディスク記憶装置
US7414335B2 (en) * 2004-04-15 2008-08-19 Seagate Technology Inrush current controller
US7609499B2 (en) * 2005-05-05 2009-10-27 Seagate Technology Llc Active current limiting circuit
KR100817051B1 (ko) * 2005-11-05 2008-03-26 삼성전자주식회사 하드디스크 드라이브의 리트랙트 방법, 이를 적용한하드디스크 드라이브 그리고 이에 적합한 기록 매체
KR100734291B1 (ko) * 2005-12-07 2007-07-02 삼성전자주식회사 하드디스크 드라이브의 리트랙트 제어 방법 그리고 이를적용한 하드디스크 드라이브
US7301722B1 (en) 2005-12-30 2007-11-27 Texas Instruments Incorporated Wave torque retract of disk drive actuator
JP4538079B1 (ja) * 2009-06-18 2010-09-08 株式会社東芝 ヘッドの跳ね返り距離を計算するディスク記憶装置
US9093105B2 (en) * 2011-12-09 2015-07-28 Western Digital Technologies, Inc. Disk drive charging capacitor using motor supply voltage during power failure

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5325030A (en) * 1991-08-08 1994-06-28 Motorola, Inc. Voice coil motor driving circuit with retracting function
JPH07211031A (ja) * 1993-12-28 1995-08-11 Internatl Business Mach Corp <Ibm> アクチュエータのリトラクト方法及び磁気ディスク装置
US5969899A (en) * 1997-04-02 1999-10-19 Mobile Storage Technology, Inc. Enhanced method and system of unloading magnetic heads

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4237501A (en) * 1978-07-25 1980-12-02 Pertec Computer Corporation Emergency head unload system for magnetic disk drive
US4831469A (en) 1987-07-29 1989-05-16 International Business Machines Corporation Disk drive head retract and motor braking method and apparatus
JPH05174519A (ja) * 1991-12-24 1993-07-13 Seiko Epson Corp 記録再生装置
JP3545049B2 (ja) * 1993-06-22 2004-07-21 エスティーマイクロエレクトロニクス，インコーポレイテッド 電源エネルギ障害時の逆起電力整流電圧
US5448436A (en) * 1994-03-14 1995-09-05 International Business Machines Corporation Disk drive with shock-resistant rotary actuator
JPH08249851A (ja) 1995-03-14 1996-09-27 Sony Corp ディスク装置及びその内側ストッパ
JP2705659B2 (ja) 1995-09-01 1998-01-28 日本電気株式会社 磁気ヘッドリトラクト方法及び磁気ディスク装置
US5737144A (en) * 1996-06-05 1998-04-07 Quantum Corporation Switched boost voltage generator for actuator retract in disk drive
US6025968A (en) * 1997-06-23 2000-02-15 International Business Machines Corporation Load/unload disk drive with multistage retract circuit for parking the head carriers on power down
US6081400A (en) * 1997-11-14 2000-06-27 Castlewood Systems, Inc. Power-off method and device for electronic storage apparatus
US6064539A (en) * 1997-12-11 2000-05-16 Stmicroelectronics, Inc. Method of retracting a read and/or write head for parking

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5325030A (en) * 1991-08-08 1994-06-28 Motorola, Inc. Voice coil motor driving circuit with retracting function
JPH07211031A (ja) * 1993-12-28 1995-08-11 Internatl Business Mach Corp <Ibm> アクチュエータのリトラクト方法及び磁気ディスク装置
US5969899A (en) * 1997-04-02 1999-10-19 Mobile Storage Technology, Inc. Enhanced method and system of unloading magnetic heads

Also Published As

Publication number Publication date
KR20000062682A (ko) 2000-10-25
JP3494584B2 (ja) 2004-02-09
KR100379727B1 (ko) 2003-04-10
JP2000260142A (ja) 2000-09-22
US6643087B1 (en) 2003-11-04

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