DE69423731D1 - Lade- entladevorrichtung und antriebssteuerkreis - Google Patents

Lade- entladevorrichtung und antriebssteuerkreis

Info

Publication number
DE69423731D1
DE69423731D1 DE69423731T DE69423731T DE69423731D1 DE 69423731 D1 DE69423731 D1 DE 69423731D1 DE 69423731 T DE69423731 T DE 69423731T DE 69423731 T DE69423731 T DE 69423731T DE 69423731 D1 DE69423731 D1 DE 69423731D1
Authority
DE
Germany
Prior art keywords
charging
control circuit
drive control
unloading device
unloading
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.)
Expired - Fee Related
Application number
DE69423731T
Other languages
English (en)
Other versions
DE69423731T2 (de
Inventor
Dai Masuoka
Toru Takeda
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.)
Sony Corp
Original Assignee
Sony Corp
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 Sony Corp filed Critical Sony Corp
Application granted granted Critical
Publication of DE69423731D1 publication Critical patent/DE69423731D1/de
Publication of DE69423731T2 publication Critical patent/DE69423731T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
    • 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
    • G11B5/54—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 into or out of its operative position or across tracks
DE69423731T 1993-08-24 1994-08-24 Lade- entladevorrichtung und antriebssteuerkreis Expired - Fee Related DE69423731T2 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP23099193 1993-08-24
JP15935294 1994-06-17
JP6199040A JPH0863920A (ja) 1993-08-24 1994-08-01 ロード・アンロード装置及びその駆動制御回路
PCT/JP1994/001396 WO1995006314A1 (fr) 1993-08-24 1994-08-24 Dispositif de chargement et de dechargement et circuit de commande d'entrainement

Publications (2)

Publication Number Publication Date
DE69423731D1 true DE69423731D1 (de) 2000-05-04
DE69423731T2 DE69423731T2 (de) 2000-11-09

Family

ID=27321530

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69423731T Expired - Fee Related DE69423731T2 (de) 1993-08-24 1994-08-24 Lade- entladevorrichtung und antriebssteuerkreis

Country Status (6)

Country Link
US (1) US5663846A (de)
EP (1) EP0667615B1 (de)
JP (1) JPH0863920A (de)
KR (1) KR100361142B1 (de)
DE (1) DE69423731T2 (de)
WO (1) WO1995006314A1 (de)

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JP3080363B2 (ja) 1997-06-27 2000-08-28 インターナショナル・ビジネス・マシーンズ・コーポレ−ション ディスクドライブ装置、ロード・アンロード装置及びその制御方法
US6278584B1 (en) 1997-10-27 2001-08-21 Seagate Technology, Inc. Friction control on HGA ramp load/unload surface
GB2341526B (en) 1997-11-17 2003-01-15 Seagate Technology Method and dedicated frame buffer for loop initialization and responses
US6275356B1 (en) * 1997-12-08 2001-08-14 Seagate Technology, Inc. Friction control on HGA ramp load/unload surface
KR100525887B1 (ko) * 1997-12-22 2005-12-21 삼성전자주식회사 하드 디스크 드라이브의 초기화 구현방법
KR19990061744A (ko) * 1997-12-31 1999-07-26 윤종용 하드 디스크 드라이브 헤드의 파킹 방법
EP0974143A1 (de) * 1998-02-06 2000-01-26 Seagate Technology, Inc. Gerät und verfahren zur detection der geschwindigkeit einer kopf-arm-vorrichtung während der kopfladung in einer plattenlaufwerk
KR100518514B1 (ko) * 1998-02-20 2005-11-24 삼성전자주식회사 하드 디스크 드라이브에서 엑츄에이터 온트랙 제어장치및 그방법
JP3567078B2 (ja) * 1998-04-13 2004-09-15 株式会社日立グローバルストレージテクノロジーズ リトラクト方法及び磁気ディスク装置
US6600618B2 (en) 1998-09-21 2003-07-29 Stmicroelectronics, Inc. Time domain voice coil motor control circuit and method
US6246534B1 (en) * 1998-10-27 2001-06-12 International Business Machines Corporation Hard disk drive with lube on demand actuators
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US6320717B1 (en) * 1998-10-30 2001-11-20 Iomega Corporation Velocity limited loading of read heads onto disk drive media
JP3607513B2 (ja) 1998-11-30 2005-01-05 株式会社東芝 ヘッドロード／アンロード方式のディスク装置に適用される速度補正値キャリブレーション方法
US6590731B1 (en) * 1998-12-11 2003-07-08 Iomega Corporation System and method for adaptive soft head loading of disk drive head onto disk medium
US6700344B1 (en) 1998-12-16 2004-03-02 Stmicroelectronics Asia Pacific (Pte) Ltd. Method of controlling the speed of an arm of a disk drive
US6639749B1 (en) * 1999-01-21 2003-10-28 Seagate Technology Llc Supplying power from a spindle motor in a disc drive system
US6560057B1 (en) 1999-04-30 2003-05-06 International Business Machines Corporation Head positioning system for a disk drive during a power down condition
US6316898B1 (en) * 1999-10-29 2001-11-13 International Business Machines Corporation Pulse modulated capacitive retract device for a voice coil actuator
US6631045B1 (en) * 1999-10-29 2003-10-07 Stmicroelectronics, Inc. Method and apparatus for ramp loading in a hard disk drive using pulse width modulation
US6567232B1 (en) 1999-10-29 2003-05-20 Hitachi Global Storage Technologies Netherlands B.V. Capacitive voice coil actuator retract device with crash stop bounce detector
JP2001184816A (ja) * 1999-12-24 2001-07-06 Toshiba Corp ディスク記憶装置
US6754027B2 (en) * 2000-04-26 2004-06-22 Fujitsu Limited Head speed control method, head position detection method and disk unit
US6950272B1 (en) 2000-06-09 2005-09-27 Maxtor Corporation Method and apparatus for the acoustic improvement of the pulsed current method for controlling the velocity of a transducer head
JP2002015537A (ja) * 2000-06-28 2002-01-18 Matsushita Electric Ind Co Ltd 浮上ヘッドを用いたディスク装置のためのセンサーシステム
JP2002042434A (ja) * 2000-07-19 2002-02-08 Matsushita Electric Ind Co Ltd ディスク装置
JP2002074810A (ja) * 2000-09-05 2002-03-15 Alps Electric Co Ltd ディスク駆動装置
US6867944B1 (en) * 2000-10-31 2005-03-15 Western Digital Technologies, Inc. Disk drive comprising VCM stall detector for velocity control of an actuator arm
US6795268B1 (en) * 2000-10-31 2004-09-21 Western Digital Technologies, Inc. Disk drive employing seek time vcm ir voltage calibration for velocity control of an actuator arm
JP2002298530A (ja) 2001-03-30 2002-10-11 Toshiba Corp 電源遮断時のヘッドリトラクト方法及び磁気ディスク装置
JP2002319257A (ja) * 2001-04-23 2002-10-31 Fujitsu Ltd ロード／アンロード動作制御方法及び記憶装置
JP4651225B2 (ja) 2001-05-23 2011-03-16 ルネサスエレクトロニクス株式会社 磁気ディスク記憶装置および磁気ディスク記憶装置の制御方法
US7082009B2 (en) * 2003-02-19 2006-07-25 Matsushita Electric Industrial Co., Ltd. Accurate tracking of coil resistance based on current, voltage and angular velocity
US7009806B2 (en) * 2003-02-19 2006-03-07 Matsushita Electric Industrial Co., Ltd. Accurate tracking of coil resistance
US6965488B1 (en) * 2003-06-27 2005-11-15 Western Digital Technologies, Inc. Disk drive controlling ripple current of a voice coil motor when driven by a PWM driver
US20050007688A1 (en) * 2003-07-09 2005-01-13 Joseph Chang Dual speed control to reduce audible noise and protect head during unload in ramp load drives with pawl latch
US7209321B1 (en) 2003-07-31 2007-04-24 Western Digital Technologies, Inc. Disk drive pulse width modulating a voice coil motor using model reference current feedback
KR100532483B1 (ko) 2003-12-12 2005-12-02 삼성전자주식회사 하드디스크 드라이브의 캘리브레이션 방법 및 이에 적합한장치
US7295395B2 (en) * 2004-03-12 2007-11-13 Seagate Technology Llc Sensing a prior transducer position by a motion pattern
JP4308120B2 (ja) 2004-10-15 2009-08-05 富士通株式会社 記憶装置、記憶装置の制御方法、記憶装置の製造方法
KR100660897B1 (ko) * 2005-11-30 2006-12-26 삼성전자주식회사 액츄에이터 및 이를 구비한 하드 디스크 드라이브
KR100734291B1 (ko) * 2005-12-07 2007-07-02 삼성전자주식회사 하드디스크 드라이브의 리트랙트 제어 방법 그리고 이를적용한 하드디스크 드라이브
US7440224B2 (en) * 2006-01-23 2008-10-21 Toshiba Corporation Disk drive servo
US7721049B2 (en) * 2006-03-27 2010-05-18 Kabuhsiki Kaisha Toshiba Disk drive write method
US7436616B2 (en) * 2006-05-31 2008-10-14 Toshiba Corporation Current pulsing for unloading
US20070279782A1 (en) * 2006-05-31 2007-12-06 Rydhan Abdul R Method and apparatus for determining offset between read and write transducers in a disk drive
US7453660B2 (en) * 2006-05-31 2008-11-18 Kabushiki Kaisha Toshiba Shock feed forward adaptive filters
US20070279788A1 (en) * 2006-05-31 2007-12-06 Toshiba America Information Systems, Inc. Method and apparatus to perform defect scanning
US7457066B2 (en) * 2006-05-31 2008-11-25 Kabushiki Kiasha Toshiba Method and apparatus for phase-shift null-burst-pattern
US20070279781A1 (en) * 2006-05-31 2007-12-06 Toshiba America Information Systems, Inc. Channel training method and apparatus
US7468859B2 (en) * 2006-05-31 2008-12-23 Kabushiki Kaisha Toshiba Voice coil motor effective resistance determination
KR100761856B1 (ko) * 2006-08-22 2007-09-28 삼성전자주식회사 시크 리트라이 조건에서의 서보 제어 방법 및 장치와 이를이용한 디스크 드라이브
JP2009151894A (ja) * 2007-12-21 2009-07-09 Fujitsu Ltd 記憶装置およびヘッドアクチュエータのリトラクト機構
US8315005B1 (en) * 2009-11-06 2012-11-20 Western Digital Technologies, Inc. Ramp detection by profile sweep method utilizing integrator values
US8687312B1 (en) 2010-11-30 2014-04-01 Western Digital Technologies, Inc. Edge detection for disk drives
US10390563B2 (en) 2013-03-22 2019-08-27 Altria Client Services Llc Electronic smoking article
CN115944117A (zh) 2014-05-21 2023-04-11 菲利普莫里斯生产公司 具有内部感受器的气溶胶生成制品
JP2023129862A (ja) 2022-03-07 2023-09-20 株式会社東芝 磁気ディスク装置

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JPS53117405A (en) * 1977-03-23 1978-10-13 Hitachi Ltd Loading checking system of head
US4329721A (en) * 1980-02-11 1982-05-11 Sperry Corporation Tachometer for deriving average velocity output by sampling position signal
JPS6479981A (en) * 1987-09-21 1989-03-24 Nec Ibaraki Ltd Magnetic disk device
US4864437A (en) * 1988-03-07 1989-09-05 Syquest Technology Head loading velocity control
JPH07118170B2 (ja) * 1988-08-17 1995-12-18 アルプス電気株式会社 デイスク駆動装置
JP2722565B2 (ja) * 1988-11-28 1998-03-04 富士通株式会社 ディスク装置
JP2662721B2 (ja) * 1989-08-30 1997-10-15 京セラ株式会社 磁気ヘッドのリフトアップ機構
JP2715154B2 (ja) * 1989-09-12 1998-02-18 京セラ株式会社 磁気ディスク装置
JPH0349669U (de) * 1989-09-13 1991-05-15
US5128568A (en) * 1990-10-03 1992-07-07 International Business Machines Corp. Self-biasing timing circuit for achieving long time delays
US5455496A (en) * 1993-05-14 1995-10-03 Siliconix Incorporated Head-retract circuit for moving media storage apparatus
US5384675A (en) * 1993-09-08 1995-01-24 International Business Machines Corporation Disk drive with controlled actuator oscillation for release of head carriers

Also Published As

Publication number Publication date
US5663846A (en) 1997-09-02
EP0667615A1 (de) 1995-08-16
KR100361142B1 (ko) 2003-02-19
DE69423731T2 (de) 2000-11-09
EP0667615B1 (de) 2000-03-29
EP0667615A4 (de) 1996-02-07
KR950703781A (ko) 1995-09-20
JPH0863920A (ja) 1996-03-08
WO1995006314A1 (fr) 1995-03-02

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee