DE69516407T2 - Schaltung zur steuerung der einfahrfolge eines betätigers - Google Patents

Schaltung zur steuerung der einfahrfolge eines betätigers

Info

Publication number
DE69516407T2
DE69516407T2 DE69516407T DE69516407T DE69516407T2 DE 69516407 T2 DE69516407 T2 DE 69516407T2 DE 69516407 T DE69516407 T DE 69516407T DE 69516407 T DE69516407 T DE 69516407T DE 69516407 T2 DE69516407 T2 DE 69516407T2
Authority
DE
Germany
Prior art keywords
controlling
circuit
driver sequence
driver
sequence
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
DE69516407T
Other languages
English (en)
Other versions
DE69516407D1 (de
Inventor
Dean Wilson
Brian Molloy
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.)
Quantum Corp
Original Assignee
Quantum 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 Quantum Corp filed Critical Quantum Corp
Application granted granted Critical
Publication of DE69516407D1 publication Critical patent/DE69516407D1/de
Publication of DE69516407T2 publication Critical patent/DE69516407T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Moving Of Heads (AREA)
  • Moving Of Head For Track Selection And Changing (AREA)
DE69516407T 1994-06-24 1995-06-23 Schaltung zur steuerung der einfahrfolge eines betätigers Expired - Fee Related DE69516407T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/265,482 US5495156A (en) 1994-06-24 1994-06-24 Actuator retraction circuit
PCT/US1995/008886 WO1996000461A1 (en) 1994-06-24 1995-06-23 Actuator retraction circuit

Publications (2)

Publication Number Publication Date
DE69516407D1 DE69516407D1 (de) 2000-05-25
DE69516407T2 true DE69516407T2 (de) 2000-11-23

Family

ID=23010624

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69516407T Expired - Fee Related DE69516407T2 (de) 1994-06-24 1995-06-23 Schaltung zur steuerung der einfahrfolge eines betätigers

Country Status (6)

Country Link
US (1) US5495156A (de)
EP (1) EP0766883B1 (de)
JP (1) JPH10502480A (de)
KR (1) KR970704260A (de)
DE (1) DE69516407T2 (de)
WO (1) WO1996000461A1 (de)

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5768045A (en) * 1995-12-20 1998-06-16 Western Digital Corporation Hardware velocity limit control system
KR100255189B1 (ko) * 1996-09-25 2000-05-01 윤종용 서보제어계의 게인추정방법
US6548973B1 (en) * 1997-01-15 2003-04-15 Texas Instruments Incorporated Method and apparatus for braking a polyphase DC motor
US5872670A (en) * 1997-02-07 1999-02-16 Quantum Corporation Methods and apparatus for preventing disk drive damage by parking a transducer during microprocessor failures
US5969899A (en) * 1997-04-02 1999-10-19 Mobile Storage Technology, Inc. Enhanced method and system of unloading magnetic heads
US6204629B1 (en) * 1997-11-21 2001-03-20 Texas Instruments Incorporated Method and apparatus for accurately measuring a back-emf voltage on an actuator coil
US6064539A (en) * 1997-12-11 2000-05-16 Stmicroelectronics, Inc. Method of retracting a read and/or write head for parking
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
EP1169706A1 (de) * 1999-02-25 2002-01-09 STMicroelectronics Asia Pacific Pte Ltd. Verfahren und vorrichtung zur steuerung eines plattenantriebs bei ausfall der energiezufuhr
US6560057B1 (en) * 1999-04-30 2003-05-06 International Business Machines Corporation Head positioning system for a disk drive during a power down condition
US6566832B2 (en) 1999-06-02 2003-05-20 Maxtor Corporation Method and apparatus for parking a read/write head during power interruptions by dynamic sequencing
US6140784A (en) * 1999-06-09 2000-10-31 Quantum Corporation Power off velocity control for disk drives
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
US6316898B1 (en) 1999-10-29 2001-11-13 International Business Machines Corporation Pulse modulated capacitive retract device for a voice coil actuator
US7079350B1 (en) * 1999-11-30 2006-07-18 Stmicroelectronics, Inc. Circuit and method for controlling the parking and unparking of a read-write head
US6476996B1 (en) 2000-02-15 2002-11-05 Western Digital Technologies, Inc. Disk drive comprising an actuator driver circuit for retracting a head independent of a servo microprocessor when a spindle speed fault mode is detected
US6977794B1 (en) * 2000-07-13 2005-12-20 Maxtor Corporation Asymmetric seek velocity profile to improve power failure reliability for rigid disk drive with ramp
US6721119B1 (en) * 2000-08-16 2004-04-13 Texas Instruments Incorporated System and method for controlling an actuator motor during retract
JP2002334533A (ja) * 2001-05-08 2002-11-22 Toshiba Corp ディスク装置及び該装置におけるヘッド制御可否判定方法
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
US6876510B2 (en) * 2002-03-18 2005-04-05 Seagate Technology Llc Detecting head landings on a data zone of a data storage disc
US20030206386A1 (en) * 2002-05-01 2003-11-06 Hill Christopher Lawrence Power supply isolation during motor spinup
US7295395B2 (en) * 2004-03-12 2007-11-13 Seagate Technology Llc Sensing a prior transducer position by a motion pattern
KR100690287B1 (ko) * 2005-09-02 2007-03-09 삼성전자주식회사 하드디스크 드라이브, 하드디스크 드라이브의 자기 헤드파킹 방법 및 그 방법을 수행하는 컴퓨터 프로그램을기록한 기록매체
US9149664B2 (en) 2007-01-31 2015-10-06 Akzo Nobel N.V. Sunscreen compositions

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4104684A (en) * 1975-05-19 1978-08-01 Matsushita Electric Industrial Co., Ltd. Rotary head type magnetic video recording and reproducing system
JPS5940326A (ja) * 1982-08-30 1984-03-06 Hitachi Ltd デイスク再生装置
US4658308A (en) * 1986-03-05 1987-04-14 Miniscribe Corporation Method and apparatus for retracting head and braking motor of a disc drive device
US4786995A (en) * 1986-11-06 1988-11-22 Peripheral Technology, Inc Automatic head retract system for disk drive
JPS63131332A (ja) * 1986-11-21 1988-06-03 Ricoh Co Ltd 光ピツクアツプのトラツキング制御装置
US4860271A (en) * 1987-03-13 1989-08-22 Pioneer Electronic Corporation Servo circuit for generating a tracking error signal for optical disk player
US4885517A (en) * 1987-09-10 1989-12-05 Seagate Technology, Inc. Voice coil actuator positioning amplifier
GB2209894B (en) * 1987-09-10 1991-10-16 Integrated Power Semiconductor Signal amplifier
US5150346A (en) * 1988-12-14 1992-09-22 Asahi Kogaku Kogyo Kabushiki Kaisha Automatic tracking servo gain control apparatus
EP0598446B1 (de) * 1992-11-17 1998-06-03 Koninklijke Philips Electronics N.V. Motorantriebsschaltung, und Datenaufzeichnungs- und/oder Wiedergabegerät mit einer solchen Schaltung

Also Published As

Publication number Publication date
EP0766883B1 (de) 2000-04-19
EP0766883A1 (de) 1997-04-09
WO1996000461A1 (en) 1996-01-04
KR970704260A (ko) 1997-08-09
JPH10502480A (ja) 1998-03-03
US5495156A (en) 1996-02-27
EP0766883A4 (de) 1997-12-29
DE69516407D1 (de) 2000-05-25

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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