DE10084258T1 - Suchwiederherstellung mit unterschiedlichen Servoimpulsdatenqualifikations-Betriebsarten - Google Patents

Suchwiederherstellung mit unterschiedlichen Servoimpulsdatenqualifikations-Betriebsarten

Info

Publication number
DE10084258T1
DE10084258T1 DE10084258T DE10084258T DE10084258T1 DE 10084258 T1 DE10084258 T1 DE 10084258T1 DE 10084258 T DE10084258 T DE 10084258T DE 10084258 T DE10084258 T DE 10084258T DE 10084258 T1 DE10084258 T1 DE 10084258T1
Authority
DE
Germany
Prior art keywords
modes
pulse data
data qualification
different servo
servo pulse
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Withdrawn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
DE10084258T
Other languages
English (en)
Inventor
Jason D Gregg
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 DE10084258T1 publication Critical patent/DE10084258T1/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Withdrawn legal-status Critical Current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
    • 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
    • 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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K19/00—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits
    • H03K19/20—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits characterised by logic function, e.g. AND, OR, NOR, NOT circuits
    • 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
    • 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
    • G11B2005/0002—Special dispositions or recording techniques
    • G11B2005/0026—Pulse recording
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Computing Systems (AREA)
  • General Engineering & Computer Science (AREA)
  • Mathematical Physics (AREA)
  • Moving Of The Head To Find And Align With The Track (AREA)
  • Moving Of Head For Track Selection And Changing (AREA)
DE10084258T 1999-02-22 2000-02-22 Suchwiederherstellung mit unterschiedlichen Servoimpulsdatenqualifikations-Betriebsarten Withdrawn DE10084258T1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US12110199P 1999-02-22 1999-02-22
PCT/US2000/004453 WO2000051124A1 (en) 1999-02-22 2000-02-22 Seek recovery using different servo pulse data qualification modes

Publications (1)

Publication Number Publication Date
DE10084258T1 true DE10084258T1 (de) 2002-02-14

Family

ID=22394561

Family Applications (1)

Application Number Title Priority Date Filing Date
DE10084258T Withdrawn DE10084258T1 (de) 1999-02-22 2000-02-22 Suchwiederherstellung mit unterschiedlichen Servoimpulsdatenqualifikations-Betriebsarten

Country Status (7)

Country Link
US (1) US6347019B1 (de)
JP (1) JP2002538569A (de)
KR (1) KR20010102329A (de)
CN (1) CN1354881A (de)
DE (1) DE10084258T1 (de)
GB (1) GB2362987A (de)
WO (1) WO2000051124A1 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6538835B1 (en) * 1999-02-22 2003-03-25 Seagate Technology Llc Position signal distortion compensation during a disc drive seek
US7388724B2 (en) * 2006-06-16 2008-06-17 Sun Microsystems, Inc. Pulse-slimming for a tape servo system using non-linear gain
JP2018156716A (ja) * 2017-03-21 2018-10-04 株式会社東芝 磁気ディスク装置、コントローラ及び方法

Family Cites Families (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4048660A (en) 1975-12-23 1977-09-13 International Business Machines Corporation Record track following and seeking
US4135217A (en) 1976-11-02 1979-01-16 Xerox Corporation Utilization of stored run-out information in a track following servo system
EP0050695A1 (de) * 1980-10-29 1982-05-05 International Business Machines Corporation Abtastende Servo-Systeme zur Positionsregelung
US4371960A (en) 1980-12-24 1983-02-01 Magnetic Peripherals Inc. Measurement of disc servo head/data head misalignment
US5153787A (en) 1982-05-10 1992-10-06 Digital Equipment Corporation Combination embedded and dedicated servo system including embedded servo waiting
EP0130248B1 (de) 1983-06-30 1987-11-25 International Business Machines Corporation Spurnachlaufservosystem für eine Magnetplattenvorrichtung
US4630190A (en) 1984-02-21 1986-12-16 Syquest Technology Servo control apparatus for a disk drive
US4775903A (en) * 1986-10-14 1988-10-04 Hewlett-Packard Company Sampled servo seek and track follow system for a magnetic disc drive
US4890172A (en) 1988-09-27 1989-12-26 Digital Equipment Corporation Automatic servo gain calibration system for a disk drive
JP2613937B2 (ja) 1989-01-30 1997-05-28 富士通株式会社 サーボ回路
US5041926A (en) * 1989-11-13 1991-08-20 Hewlett-Packard Company Track position syncopation cancellation in a disk drive
JP2642518B2 (ja) * 1990-12-21 1997-08-20 富士通株式会社 磁気ヘッド位置信号のオフセット補正方式
US5475545A (en) 1991-03-28 1995-12-12 Seagate Technology, Inc. Method for reducing noise during seeks in a hard disk drive
US5233486A (en) * 1991-06-06 1993-08-03 Seagate Technology, Inc. Method for correcting track counting errors during seeks in a hard disc drive
US5262907A (en) 1991-07-31 1993-11-16 Seagate Technology, Inc. Hard disc drive with improved servo system
US5373513A (en) * 1991-08-16 1994-12-13 Eastman Kodak Company Shift correction code system for correcting additive errors and synchronization slips
EP0556445A1 (de) * 1991-10-01 1993-08-25 Fujitsu Limited Spitzenwerfdetektor zur Spurführung im magnetischen Plattenspeicher
US5798885A (en) 1994-06-06 1998-08-25 Fujitsu Limited Head positioning control for disk apparatus using peak detection, polarity detection and sector mark detection
US5615065A (en) 1994-10-04 1997-03-25 International Business Machines Corporation Phase-compensated servo pattern and position error-sensing detector
US5801896A (en) * 1995-03-02 1998-09-01 International Business Machines Corporation Method and apparatus for servo pulse detection with high AC coupling and large pulse asymmetry
US5796535A (en) * 1995-05-12 1998-08-18 Cirrus Logic, Inc. Sampled amplitude read channel employing a user data frequency synthesizer and a servo data frequency synthesizer
US5608583A (en) * 1995-05-24 1997-03-04 Conner Peripherals, Inc. System for qualifying the detection of a servo dibit

Also Published As

Publication number Publication date
US6347019B1 (en) 2002-02-12
JP2002538569A (ja) 2002-11-12
CN1354881A (zh) 2002-06-19
GB2362987A (en) 2001-12-05
KR20010102329A (ko) 2001-11-15
WO2000051124A1 (en) 2000-08-31
GB0119180D0 (en) 2001-09-26

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Legal Events

Date Code Title Description
8139 Disposal/non-payment of the annual fee