DE69219376D1 - Magnetaufzeichnungs- und Wiedergabemethode und Gerät - Google Patents

Magnetaufzeichnungs- und Wiedergabemethode und Gerät

Info

Publication number
DE69219376D1
DE69219376D1 DE69219376T DE69219376T DE69219376D1 DE 69219376 D1 DE69219376 D1 DE 69219376D1 DE 69219376 T DE69219376 T DE 69219376T DE 69219376 T DE69219376 T DE 69219376T DE 69219376 D1 DE69219376 D1 DE 69219376D1
Authority
DE
Germany
Prior art keywords
magnetic recording
playback method
playback
recording
magnetic
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 - Lifetime
Application number
DE69219376T
Other languages
English (en)
Other versions
DE69219376T2 (de
Inventor
Makoto Gohda
Shinichi Yamashita
Yasuyuki Tanaka
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.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Publication of DE69219376D1 publication Critical patent/DE69219376D1/de
Application granted granted Critical
Publication of DE69219376T2 publication Critical patent/DE69219376T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • G11B5/84—Processes or apparatus specially adapted for manufacturing record carriers
    • G11B5/85—Coating a support with a magnetic layer by vapour deposition
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/10009—Improvement or modification of read or write signals
    • 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
    • G11B5/02—Recording, reproducing, or erasing methods; Read, write or erase circuits therefor
    • G11B5/09—Digital 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
    • G11B5/62—Record carriers characterised by the selection of the material
    • G11B5/64—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent
    • G11B5/66—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent the record carriers consisting of several layers
    • G11B5/674—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent the record carriers consisting of several layers having differing macroscopic or microscopic structures, e.g. differing crystalline lattices, varying atomic structures or differing roughnesses
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S428/00—Stock material or miscellaneous articles
    • Y10S428/922—Static electricity metal bleed-off metallic stock
    • Y10S428/9265—Special properties
    • Y10S428/928—Magnetic property
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12465—All metal or with adjacent metals having magnetic properties, or preformed fiber orientation coordinate with shape

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Magnetic Record Carriers (AREA)
  • Digital Magnetic Recording (AREA)
DE69219376T 1991-02-07 1992-02-06 Magnetaufzeichnungs- und Wiedergabemethode und Gerät Expired - Lifetime DE69219376T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3016469A JP2840467B2 (ja) 1991-02-07 1991-02-07 磁気記録及び再生方法

Publications (2)

Publication Number Publication Date
DE69219376D1 true DE69219376D1 (de) 1997-06-05
DE69219376T2 DE69219376T2 (de) 1997-12-11

Family

ID=11917123

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69219376T Expired - Lifetime DE69219376T2 (de) 1991-02-07 1992-02-06 Magnetaufzeichnungs- und Wiedergabemethode und Gerät

Country Status (4)

Country Link
US (1) US5347408A (de)
EP (1) EP0498421B1 (de)
JP (1) JP2840467B2 (de)
DE (1) DE69219376T2 (de)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5894468A (en) * 1994-05-06 1999-04-13 Discovision Associates Data recovery with differentiation and partial integration stages to eliminate noises and DC offset level
KR100191758B1 (ko) * 1995-02-28 1999-06-15 니시무로 타이죠 디지탈 신호 기록 방법 및 장치, 디지탈 신호 기록매체,및 디지탈 신호 전송 방법 및 장치
JP2005293750A (ja) * 2004-04-01 2005-10-20 Fuji Photo Film Co Ltd 記録再生方法および記録再生装置ならびに磁気記録媒体
US7532425B2 (en) * 2005-06-21 2009-05-12 Fujifilm Corporation Reproducing method, reproducing apparatus, recording and reproducing apparatus, and magnetic recording medium
FR2924261A1 (fr) * 2007-11-26 2009-05-29 Commissariat Energie Atomique Support d'enregistrement magnetique
US8107194B2 (en) * 2008-09-24 2012-01-31 International Business Machines Corporation Writing and reading multi-layer continuous magnetic recording media
US7911739B2 (en) * 2008-09-25 2011-03-22 International Business Machines Corporation Writing and reading multi-level patterned magnetic recording media
US8085502B2 (en) * 2009-11-10 2011-12-27 International Business Machines Corporation Writing and reading multi-level patterned magnetic recording media, with more than two recording levels
US8031425B2 (en) * 2009-11-10 2011-10-04 International Business Machines Corporation Writing and reading multi-layer continuous magnetic recording media, with more than two recording layers

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4234898A (en) * 1978-03-15 1980-11-18 Nippon Hoso Kyokai Digital magnetic recording and reproducing apparatus
JPS56134317A (en) * 1980-03-25 1981-10-21 Tdk Corp Magnetic recording medium
JPS573223A (en) * 1980-06-03 1982-01-08 Tdk Corp Magnetic recording medium
JPS5792402A (en) * 1980-11-25 1982-06-09 Fuji Photo Film Co Ltd Magnetic recording and reproducing method
JPS57127925A (en) * 1981-01-30 1982-08-09 Sekisui Chem Co Ltd Magnetic recording medium
US4880687A (en) * 1986-05-09 1989-11-14 Tdk Corporation Magnetic recording medium
JPH0782604B2 (ja) * 1986-06-26 1995-09-06 三菱電機株式会社 磁気記録再生装置
US5148333A (en) * 1988-12-21 1992-09-15 Sony Corp. Method for recording and/or reproducing a signal
JPH02270104A (ja) * 1989-04-10 1990-11-05 Mitsubishi Electric Corp 磁気記録再生装置
EP0477641A3 (en) * 1990-09-11 1993-05-05 Tdk Corporation Magnetic recording medium for digital recording

Also Published As

Publication number Publication date
EP0498421A3 (en) 1993-06-02
JP2840467B2 (ja) 1998-12-24
JPH04254906A (ja) 1992-09-10
EP0498421B1 (de) 1997-05-02
EP0498421A2 (de) 1992-08-12
US5347408A (en) 1994-09-13
DE69219376T2 (de) 1997-12-11

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition