JPS61500877A - 磁気記録媒体及びその追跡装置と方法 - Google Patents

磁気記録媒体及びその追跡装置と方法

Info

Publication number
JPS61500877A
JPS61500877A JP50021584A JP50021584A JPS61500877A JP S61500877 A JPS61500877 A JP S61500877A JP 50021584 A JP50021584 A JP 50021584A JP 50021584 A JP50021584 A JP 50021584A JP S61500877 A JPS61500877 A JP S61500877A
Authority
JP
Japan
Prior art keywords
recording medium
guideline
light
read
optical
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.)
Pending
Application number
JP50021584A
Other languages
English (en)
Japanese (ja)
Inventor
バーンズ，ロナルド　リー
Original Assignee
エヌ・シ−・ア−ル・コ−ポレ−シヨン
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 エヌ・シ−・ア−ル・コ−ポレ−シヨン filed Critical エヌ・シ−・ア−ル・コ−ポレ−シヨン
Publication of JPS61500877A publication Critical patent/JPS61500877A/ja
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B13/00—Recording simultaneously or selectively by methods covered by different main groups among G11B3/00, G11B5/00, G11B7/00 and G11B9/00; Record carriers therefor not otherwise provided for; Reproducing therefrom not otherwise provided for
    • G11B13/04—Recording simultaneously or selectively by methods covered by different main groups among G11B3/00, G11B5/00, G11B7/00 and G11B9/00; Record carriers therefor not otherwise provided for; Reproducing therefrom not otherwise provided for magnetically or by magnetisation and optically or by radiation, for changing or sensing optical properties
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B23/00—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture
    • G11B23/38—Visual features other than those contained in record tracks or represented by sprocket holes the visual signals being auxiliary signals
    • G11B23/42—Marks for indexing, speed-controlling, synchronising, or timing
    • 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
    • G11B5/59677—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 with optical servo tracking

Landscapes

  • Moving Of The Head To Find And Align With The Track (AREA)
JP50021584A 1983-12-27 1984-12-19 磁気記録媒体及びその追跡装置と方法 Pending JPS61500877A (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US56612483A 1983-12-27 1983-12-27
US566124 1983-12-27

Publications (1)

Publication Number Publication Date
JPS61500877A true JPS61500877A (ja) 1986-05-01

Family

ID=24261593

Family Applications (1)

Application Number Title Priority Date Filing Date
JP50021584A Pending JPS61500877A (ja) 1983-12-27 1984-12-19 磁気記録媒体及びその追跡装置と方法

Country Status (3)

Country Link
EP (1) EP0167570A1 (fr)
JP (1) JPS61500877A (fr)
WO (1) WO1985002933A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02154317A (ja) * 1988-12-07 1990-06-13 Hitachi Ltd 磁気記録装置

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4816939A (en) * 1986-08-21 1989-03-28 Polaroid Corporation Magnetic recording media and servo systems using light-transmitting optical gratings
US4843494A (en) * 1987-10-15 1989-06-27 Polaroid Corporation Data storage apparatus using optical servo tracks
US5101385A (en) * 1988-03-14 1992-03-31 Bernoulli Optical Systems Company Magneto-optical information storage system for flexible media having maximum overwrite efficiency
GB2216710B (en) * 1988-03-14 1992-09-02 Ici Plc Optical or magneto-optical data system
US4958245A (en) * 1988-04-07 1990-09-18 Insite Peripherals, Inc. Apparatus and method for optical servo control with media having information storage and servo control regions of different reflectivities
US4961123A (en) * 1988-06-03 1990-10-02 Insite Peripherals Magnetic information media storage with optical servo tracks
JPH02257481A (ja) * 1988-07-21 1990-10-18 Insite Peripherals Inc ディスク駆動機構用ヘッド
US5208706A (en) * 1988-10-24 1993-05-04 Lemelson Jerome H Magnetic reproduction apparatus and method
US5682360A (en) * 1992-01-29 1997-10-28 Matsushita Electric Industrial Co., Ltd. Recording and reproducing apparatus for use with a recording medium having an optical recording layer and magnetic recording layer
US5526328A (en) * 1992-01-29 1996-06-11 Matsushita Electric Industrial Co., Ltd. Recording and reproducing apparatus with varying amounts of data in different tracks
CN1075024A (zh) * 1992-01-29 1993-08-04 松下电器产业株式会社 录放装置
USRE40957E1 (en) 1992-01-29 2009-11-10 Panasonic Corporation Medium, apparatus, and method related to encryption resultant information
US5473584A (en) 1992-01-29 1995-12-05 Matsushita Electric Industrial Co., Ltd. Recording and reproducing apparatus
JP3275404B2 (ja) * 1992-03-31 2002-04-15 三菱化学株式会社 情報記録媒体および情報記録装置
DE4220486A1 (de) * 1992-06-23 1994-01-05 Thomson Brandt Gmbh Aufzeichnung und Wiedergabe von Informationen bei ROM-RAM-Speichermedien
EP0650157B1 (fr) * 1992-11-06 1999-07-21 Mitsubishi Chemical Corporation Support d'enregistrement magnetique, procede d'enregistrement et de reproduction associe, et systeme de traitement d'informations fonctionnant avec ce support et selon ce procede
GB9224003D0 (en) * 1992-11-16 1993-01-06 Minnesota Mining & Mfg Magnetic recording materials
EP0844611A3 (fr) * 1993-01-21 2006-11-29 Matsushita Electric Industrial Co., Ltd. Disque optique
TW550551B (en) * 2000-07-28 2003-09-01 Koninkl Philips Electronics Nv Magnetic scanning system

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2315142A1 (fr) * 1975-06-17 1977-01-14 Pyral Soc Procede de guidage d'une tete d'enregistrement et/ou de lecture d'un support magnetique
DE2615838C2 (de) * 1976-04-10 1985-02-07 Philips Patentverwaltung Gmbh, 2000 Hamburg Vorrichtung zur Positionsregelung eines Schreib-Lesekopfes für Datenträger mit einer Magnetspeicherschicht
JPS52136611A (en) * 1976-05-11 1977-11-15 Fujitsu Ltd Magnetic head device
JPS546510A (en) * 1977-06-17 1979-01-18 Fujitsu Ltd Self-servo system of magnetic discs
JPS5841577B2 (ja) * 1977-11-24 1983-09-13 富士通株式会社 磁気ヘッドの光学的位置決め装置
JPS54130004A (en) * 1978-03-31 1979-10-09 Fujitsu Ltd Cylinder position detecting method of magnetic disc apparatus
JPS558604A (en) * 1978-06-30 1980-01-22 Fujitsu Ltd Servo system in rotary magnetic recording medium
JPS5622266A (en) * 1979-07-30 1981-03-02 Fujitsu Ltd Flexible magnetic disc unit
JPS56111169A (en) * 1980-02-04 1981-09-02 Fujitsu Ltd Track servo system of magnetic disc device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02154317A (ja) * 1988-12-07 1990-06-13 Hitachi Ltd 磁気記録装置

Also Published As

Publication number Publication date
WO1985002933A1 (fr) 1985-07-04
EP0167570A1 (fr) 1986-01-15

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