FI844959A0 - Skivenhet. - Google Patents

Skivenhet.

Info

Publication number
FI844959A0
FI844959A0 FI844959A FI844959A FI844959A0 FI 844959 A0 FI844959 A0 FI 844959A0 FI 844959 A FI844959 A FI 844959A FI 844959 A FI844959 A FI 844959A FI 844959 A0 FI844959 A0 FI 844959A0
Authority
FI
Finland
Prior art keywords
skivenhet
Prior art date
Application number
FI844959A
Other languages
English (en)
Other versions
FI844959L (fi
FI87845C (fi
FI87845B (fi
Inventor
Masahiro Mizuno
Hiroshi Baba
Original Assignee
Mitsubishi Electric 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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Publication of FI844959A0 publication Critical patent/FI844959A0/fi
Publication of FI844959L publication Critical patent/FI844959L/fi
Application granted granted Critical
Publication of FI87845B publication Critical patent/FI87845B/fi
Publication of FI87845C publication Critical patent/FI87845C/fi

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
    • 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
    • G11B5/5565—Track change, selection or acquisition by displacement of the head across disk tracks system adaptation for compensation of variations of physical parameters, e.g. temperature
    • 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
    • G11B5/58—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 for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G11B5/596—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 for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following for track following on disks
    • G11B5/59627—Aligning for runout, eccentricity or offset compensation
    • 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
    • G11B5/58—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 for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G11B5/596—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 for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following for track following on disks
    • G11B5/59633—Servo formatting
    • G11B5/59655—Sector, sample or burst servo format
FI844959A 1983-12-15 1984-12-14 Skivenhet FI87845C (fi)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP23655583 1983-12-15
JP58236555A JPS60127576A (ja) 1983-12-15 1983-12-15 磁気デイスク装置

Publications (4)

Publication Number Publication Date
FI844959A0 true FI844959A0 (fi) 1984-12-14
FI844959L FI844959L (fi) 1985-06-16
FI87845B FI87845B (fi) 1992-11-13
FI87845C FI87845C (fi) 1993-02-25

Family

ID=17002381

Family Applications (1)

Application Number Title Priority Date Filing Date
FI844959A FI87845C (fi) 1983-12-15 1984-12-14 Skivenhet

Country Status (5)

Country Link
US (1) US4609953A (fi)
EP (2) EP0147993B1 (fi)
JP (1) JPS60127576A (fi)
DE (2) DE3483467D1 (fi)
FI (1) FI87845C (fi)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1182420B (it) * 1985-02-08 1987-10-05 Olivetti & Co Spa Apparecchiatura per registrare e leggere informazioni su un disco magnetico
JPS6262487A (ja) * 1985-09-12 1987-03-19 Fuji Electric Co Ltd デイスク記憶装置の読み書きヘツドの位置決め方法
JP2887314B2 (ja) * 1988-03-29 1999-04-26 ソニー株式会社 ステッピングモータの駆動方法
JP2504122B2 (ja) * 1988-06-06 1996-06-05 三菱電機株式会社 磁気ディスク装置
DE4000663C1 (fi) * 1990-01-11 1991-06-13 Siemens Nixdorf Informationssysteme Ag, 4790 Paderborn, De
JPH03225679A (ja) * 1990-01-31 1991-10-04 Sony Corp デイスクドライブ装置
JPH04372591A (ja) * 1991-06-18 1992-12-25 Brother Ind Ltd モータ回転速度制御装置
JPH05137393A (ja) * 1991-11-08 1993-06-01 Victor Co Of Japan Ltd 情報記録再生装置
US5581421A (en) * 1992-01-30 1996-12-03 Canon Denshi Kabushiki Kaisha Method for driving stepping motor for head seek in disk drive device
US5821722A (en) * 1995-06-06 1998-10-13 General Electric Company Multiphase electrical motor, control and method using overlapping conduction periods in the windings

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3562725A (en) * 1968-10-15 1971-02-09 Sperry Rand Corp Coarse and fine positioning of magnetic read heads
US3977024A (en) * 1973-05-24 1976-08-24 Victor Company Of Japan, Limited Recording and/or reproducing apparatus employing a rotating recording medium
US4034613A (en) * 1974-07-08 1977-07-12 Halfhill Martin O Disc drive linear actuator and control system therefor
DE2749141A1 (de) * 1977-11-03 1979-05-10 Quarz Zeit Ag Elektrische uhr
JPS56124170A (en) * 1980-02-29 1981-09-29 Ricoh Co Ltd System for driving magnetic disc
US4383209A (en) * 1980-10-15 1983-05-10 Minnesota Mining And Manufacturing Company Control system for transducer positioning motor
JPS57180396A (en) * 1981-04-27 1982-11-06 Nec Corp Magnetic disc device
JPS57186267A (en) * 1981-05-11 1982-11-16 Matsushita Electric Ind Co Ltd Device for positioning head
JPS57212665A (en) * 1981-06-24 1982-12-27 Fujitsu Ltd Head positioning system of magnetic device
JPS5835770A (ja) * 1981-08-24 1983-03-02 Hitachi Ltd 磁気デイスク装置
JPS58205956A (ja) * 1982-05-26 1983-12-01 Nippon Electric Ind Co Ltd 磁気デイスク装置
US4581567A (en) * 1982-05-28 1986-04-08 Citizen Watch Co., Ltd. Device for feeding magnetic head
JPS58208972A (ja) * 1982-05-28 1983-12-05 Citizen Watch Co Ltd 磁気ヘツドの送り装置
US4499510A (en) * 1982-08-03 1985-02-12 Weltec Digital, Inc. Precision alignment system for information storage devices
JPS59144398A (ja) * 1983-02-02 1984-08-18 West Electric Co Ltd ステツピングモ−タの駆動制御装置
US4490665A (en) * 1983-07-26 1984-12-25 Beckman Instruments, Inc. Method for driving a stepper motor
US4510429A (en) * 1983-08-19 1985-04-09 Tulin Corporation Stepper motor damping circuit and a method therefor
JPS6055568A (ja) * 1983-09-05 1985-03-30 Hitachi Ltd フレキシブルディスク駆動装置
US4622603A (en) * 1983-10-07 1986-11-11 Hitachi, Ltd. Head positioning system for magnetic recording/playback apparatus

Also Published As

Publication number Publication date
EP0351888A3 (en) 1990-03-07
EP0147993A3 (en) 1987-08-05
US4609953A (en) 1986-09-02
JPS60127576A (ja) 1985-07-08
EP0351888B1 (en) 1992-05-13
DE3485724D1 (de) 1992-06-17
FI844959L (fi) 1985-06-16
EP0147993A2 (en) 1985-07-10
FI87845C (fi) 1993-02-25
FI87845B (fi) 1992-11-13
EP0147993B1 (en) 1990-10-24
EP0351888A2 (en) 1990-01-24
DE3483467D1 (de) 1990-11-29

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Legal Events

Date Code Title Description
MM Patent lapsed
MM Patent lapsed

Owner name: MITSUBISHI DENKI KABUSHIKI KAISHA