DE68916252D1 - Einstufen-suchverfahren. - Google Patents

Einstufen-suchverfahren.

Info

Publication number
DE68916252D1
DE68916252D1 DE68916252T DE68916252T DE68916252D1 DE 68916252 D1 DE68916252 D1 DE 68916252D1 DE 68916252 T DE68916252 T DE 68916252T DE 68916252 T DE68916252 T DE 68916252T DE 68916252 D1 DE68916252 D1 DE 68916252D1
Authority
DE
Germany
Prior art keywords
track
loop
microprocessor
profile
local
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
DE68916252T
Other languages
English (en)
Other versions
DE68916252T2 (de
Inventor
Charles Abate
Robert Jackson
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.)
Maxtor Corp
Original Assignee
Maxtor 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 Maxtor Corp filed Critical Maxtor Corp
Application granted granted Critical
Publication of DE68916252D1 publication Critical patent/DE68916252D1/de
Publication of DE68916252T2 publication Critical patent/DE68916252T2/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
    • G11B21/08—Track changing or selecting 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
    • G11B21/08—Track changing or selecting during transducing operation
    • G11B21/081—Access to indexed tracks or parts of continuous track
    • G11B21/083—Access to indexed tracks or parts of continuous track on discs
    • G11B21/085—Access to indexed tracks or parts of continuous track on discs with track following of accessed part
    • 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
    • G11B5/55—Track change, selection or acquisition by displacement of the head
    • G11B5/5521—Track change, selection or acquisition by displacement of the head across disk tracks
    • G11B5/5526—Control therefor; circuits, track configurations or relative disposition of servo-information transducers and servo-information tracks for control thereof
    • G11B5/553—Details
    • G11B5/5547—"Seek" control and circuits therefor
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
    • G11B7/085—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam into, or out of, its operative position or across tracks, otherwise than during the transducing operation, e.g. for adjustment or preliminary positioning or track change or selection
    • G11B7/08505—Methods for track change, selection or preliminary positioning by moving the head
    • G11B7/08517—Methods for track change, selection or preliminary positioning by moving the head with tracking pull-in only

Landscapes

  • Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
  • Moving Of The Head To Find And Align With The Track (AREA)
  • Vehicle Body Suspensions (AREA)
  • Communication Control (AREA)
  • Liquid Crystal Substances (AREA)
DE68916252T 1988-10-03 1989-09-25 Einstufen-suchverfahren. Expired - Fee Related DE68916252T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/252,768 US4980876A (en) 1988-10-03 1988-10-03 Single stage track seek method
PCT/US1989/004170 WO1990004252A1 (en) 1988-10-03 1989-09-25 Single stage seek method

Publications (2)

Publication Number Publication Date
DE68916252D1 true DE68916252D1 (de) 1994-07-21
DE68916252T2 DE68916252T2 (de) 1995-02-02

Family

ID=22957464

Family Applications (1)

Application Number Title Priority Date Filing Date
DE68916252T Expired - Fee Related DE68916252T2 (de) 1988-10-03 1989-09-25 Einstufen-suchverfahren.

Country Status (9)

Country Link
US (1) US4980876A (de)
EP (1) EP0436656B1 (de)
JP (1) JP2754271B2 (de)
KR (1) KR0178510B1 (de)
AT (1) ATE107427T1 (de)
AU (1) AU4409889A (de)
CA (1) CA1322789C (de)
DE (1) DE68916252T2 (de)
WO (1) WO1990004252A1 (de)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2870112B2 (ja) * 1990-04-13 1999-03-10 三菱電機株式会社 フレキシブルディスク装置
US5321676A (en) * 1991-12-10 1994-06-14 U.S. Philips Corporation Record carrier scanning apparatus wherein the scanning head is positioned without feedback and a predetermined range of fine positioning of the scanning point is maintained
US5343131A (en) * 1993-01-27 1994-08-30 Fujitsu Limited Method and apparatus for self-synchronizing seek deceleration
KR0128040B1 (ko) * 1993-11-27 1998-04-04 김광호 디스크 기록 매체를 이용하는 데이타 저장장치의 디지탈 서보제어장치 및 방법
US5629914A (en) * 1995-03-20 1997-05-13 International Business Machines Corporation Data-transition threshold following in optical recording
US5978329A (en) 1995-06-07 1999-11-02 Discovision Associates Technique for closed loop servo operation in optical disc tracking control
US5907526A (en) * 1995-11-15 1999-05-25 Zen Research N.V. Methods and apparatus for simultaneously reading multiple tracks of an optical storage medium
WO1997018560A1 (en) * 1995-11-15 1997-05-22 Zen Research N.V. Track detection methods and apparatus for simultaneous electronic monitoring of multiple adjacent tracks of an optical disk
US5701283A (en) * 1995-11-15 1997-12-23 Zen Research N.V. Method and apparatus for high speed optical storage device
US6381210B1 (en) 1995-11-15 2002-04-30 Zen Research (Ireland) Ltd. Methods and apparatus for concurrently processing data from multiple tracks of an optical storage medium
US5793549A (en) * 1995-11-15 1998-08-11 Zen Research N.V. Methods and apparatus for synchronizing read out of data from multiple tracks of an optical storage device
ATE201277T1 (de) 1995-12-06 2001-06-15 Discovision Ass Gerät und verfahren zum regeln der fokussierung
US5689485A (en) 1996-04-01 1997-11-18 Discovision Associates Tracking control apparatus and method
US6137763A (en) * 1998-09-24 2000-10-24 Zen Research N.V. Method and apparatus for buffering data in a multi-beam optical disk reader
KR20010080009A (ko) 1998-10-09 2001-08-22 토마스 에프.멀베니 탐색동작을 다이나믹하게 조절하기 위한 디스크 드라이브방법 및 장치
US6791786B2 (en) 2000-05-22 2004-09-14 Seagate Technology Llc Active damping of two-stage actuator system in a disc drive
US6744711B1 (en) * 2000-06-20 2004-06-01 Discovision Associates Method and apparatus for a high-speed search of an optical medium
JP4799761B2 (ja) * 2001-05-28 2011-10-26 オンセミコンダクター・トレーディング・リミテッド ステッピングモータの制御方法
US6735041B1 (en) * 2002-03-29 2004-05-11 Western Digital Technologies, Inc. Method for seeking in a magnetic disk drive having a spiral track
TWI227886B (en) * 2003-08-08 2005-02-11 Lite On It Corp A method of correcting the position of the optical pickup before track following

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5528528A (en) * 1978-08-17 1980-02-29 Nec Corp Velocity setting device for magnetic head
US4532562A (en) * 1981-04-24 1985-07-30 Iomega Corporation Servo control of seek operation in magnetic disk drive
US4697127A (en) * 1986-06-09 1987-09-29 International Business Machines Corporation Adaptive control technique for a dynamic system

Also Published As

Publication number Publication date
CA1322789C (en) 1993-10-05
JP2754271B2 (ja) 1998-05-20
US4980876A (en) 1990-12-25
KR900702530A (ko) 1990-12-07
AU4409889A (en) 1990-05-01
WO1990004252A1 (en) 1990-04-19
KR0178510B1 (ko) 1999-04-15
EP0436656A1 (de) 1991-07-17
EP0436656B1 (de) 1994-06-15
ATE107427T1 (de) 1994-07-15
DE68916252T2 (de) 1995-02-02
EP0436656A4 (en) 1992-03-25
JPH04501930A (ja) 1992-04-02

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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