DE69128023D1 - Gerät und Verfahren für die Wiedergabe von Signalen - Google Patents

Gerät und Verfahren für die Wiedergabe von Signalen

Info

Publication number
DE69128023D1
DE69128023D1 DE69128023T DE69128023T DE69128023D1 DE 69128023 D1 DE69128023 D1 DE 69128023D1 DE 69128023 T DE69128023 T DE 69128023T DE 69128023 T DE69128023 T DE 69128023T DE 69128023 D1 DE69128023 D1 DE 69128023D1
Authority
DE
Germany
Prior art keywords
reproduction
signals
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
DE69128023T
Other languages
English (en)
Other versions
DE69128023T2 (de
Inventor
Minoru Tobita
Kunio Kawaguchi
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.)
Sony Corp
Original Assignee
Sony 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 Sony Corp filed Critical Sony Corp
Publication of DE69128023D1 publication Critical patent/DE69128023D1/de
Application granted granted Critical
Publication of DE69128023T2 publication Critical patent/DE69128023T2/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
    • 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
    • G11B20/10481—Improvement or modification of read or write signals optimisation methods
    • G11B20/10518—Improvement or modification of read or write signals optimisation methods using neural networks
    • 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
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06N—COMPUTING ARRANGEMENTS BASED ON SPECIFIC COMPUTATIONAL MODELS
    • G06N3/00—Computing arrangements based on biological models
    • G06N3/02—Neural networks
    • G06N3/04—Architecture, e.g. interconnection topology
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06N—COMPUTING ARRANGEMENTS BASED ON SPECIFIC COMPUTATIONAL MODELS
    • G06N3/00—Computing arrangements based on biological models
    • G06N3/02—Neural networks
    • G06N3/06—Physical realisation, i.e. hardware implementation of neural networks, neurons or parts of neurons
    • G06N3/063—Physical realisation, i.e. hardware implementation of neural networks, neurons or parts of neurons using electronic means
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
    • G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
    • G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
    • G11B11/10502—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing characterised by the transducing operation to be executed
    • G11B11/10515—Reproducing
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
    • G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
    • G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
    • G11B11/10502—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing characterised by the transducing operation to be executed
    • G11B11/1053—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing characterised by the transducing operation to be executed to compensate for the magnetic domain drift or time shift
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Evolutionary Computation (AREA)
  • Artificial Intelligence (AREA)
  • Health & Medical Sciences (AREA)
  • Biophysics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • General Health & Medical Sciences (AREA)
  • Molecular Biology (AREA)
  • Computing Systems (AREA)
  • Computational Linguistics (AREA)
  • General Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Software Systems (AREA)
  • Data Mining & Analysis (AREA)
  • Neurology (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Character Discrimination (AREA)
  • Electrically Operated Instructional Devices (AREA)
  • Filters That Use Time-Delay Elements (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
DE69128023T 1990-12-17 1991-12-13 Gerät und Verfahren für die Wiedergabe von Signalen Expired - Fee Related DE69128023T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2411124A JPH04216343A (ja) 1990-12-17 1990-12-17 信号再生装置および方法

Publications (2)

Publication Number Publication Date
DE69128023D1 true DE69128023D1 (de) 1997-11-27
DE69128023T2 DE69128023T2 (de) 1998-02-19

Family

ID=18520172

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69128023T Expired - Fee Related DE69128023T2 (de) 1990-12-17 1991-12-13 Gerät und Verfahren für die Wiedergabe von Signalen

Country Status (5)

Country Link
US (1) US5295130A (de)
EP (1) EP0491301B1 (de)
JP (1) JPH04216343A (de)
KR (1) KR920013299A (de)
DE (1) DE69128023T2 (de)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2797035B2 (ja) * 1991-01-31 1998-09-17 日本ビクター株式会社 ニューラルネットによる波形処理装置及びその設計方法
JPH06112931A (ja) * 1992-09-30 1994-04-22 Victor Co Of Japan Ltd デジタル信号の前処理方法
KR100234451B1 (ko) * 1994-05-18 2000-01-15 모리시타 요이찌 신호 기록 및 재생 장치
WO1996006433A1 (fr) * 1994-08-25 1996-02-29 Sony Corporation Disque optique et unite de disque optique
US6215758B1 (en) * 1996-10-04 2001-04-10 Sony Corporation Recording medium
US5978782A (en) * 1996-07-05 1999-11-02 National Semiconductor Corporation Neural network signal processor for magnetic storage channels
US6310851B1 (en) 1997-01-21 2001-10-30 Sony Corporation Frequency demodulating circuit, optical disk apparatus thereof and preformating device
US6385257B1 (en) * 1997-01-21 2002-05-07 Sony Corporation Frequency demodulating circuit, optical disk apparatus thereof and preformating device
JP4636635B2 (ja) * 1997-03-19 2011-02-23 株式会社日立製作所 ディスク再生装置およびディスク再生方法
JP3429166B2 (ja) 1997-08-28 2003-07-22 富士通株式会社 光学的記憶装置
JPH11273254A (ja) * 1998-03-20 1999-10-08 Toshiba Corp ディスク記憶装置
JP3764269B2 (ja) * 1998-03-20 2006-04-05 株式会社東芝 ディスク記憶装置
JP2000182292A (ja) * 1998-12-15 2000-06-30 Fujitsu Ltd 光学的記憶装置及び光記憶媒体の記録再生方法
US7082566B2 (en) * 2001-11-09 2006-07-25 Kabushiki Kaisha Toshiba Signal quality evaluation method, information recording/reproducing system, and recording compensation method
US8693125B1 (en) * 2013-01-17 2014-04-08 Lsi Corporation Cross clock phase measurement

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4905109A (en) * 1987-12-23 1990-02-27 Konica Corporation Process for optimizing head position to overcome disk misclamping and imperfections
US5093899A (en) * 1988-09-17 1992-03-03 Sony Corporation Neural network with normalized learning constant for high-speed stable learning
JPH0785336B2 (ja) * 1989-05-29 1995-09-13 パイオニア株式会社 記録情報の読取り装置
EP0449516B1 (de) * 1990-03-23 1997-01-08 Canon Kabushiki Kaisha Bildverarbeitung mit neuronalem Netzwerk
JPH03288285A (ja) * 1990-04-04 1991-12-18 Takayama:Kk データ処理装置の学習方法

Also Published As

Publication number Publication date
US5295130A (en) 1994-03-15
DE69128023T2 (de) 1998-02-19
EP0491301B1 (de) 1997-10-22
KR920013299A (ko) 1992-07-28
JPH04216343A (ja) 1992-08-06
EP0491301A1 (de) 1992-06-24

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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