DE3850058D1 - Optisches Informationsaufzeichnungsgerät. - Google Patents

Optisches Informationsaufzeichnungsgerät.

Info

Publication number
DE3850058D1
DE3850058D1 DE3850058T DE3850058T DE3850058D1 DE 3850058 D1 DE3850058 D1 DE 3850058D1 DE 3850058 T DE3850058 T DE 3850058T DE 3850058 T DE3850058 T DE 3850058T DE 3850058 D1 DE3850058 D1 DE 3850058D1
Authority
DE
Germany
Prior art keywords
information recording
recording device
optical information
optical
recording
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
DE3850058T
Other languages
English (en)
Other versions
DE3850058T2 (de
Inventor
Akihiro Ishikawa
Haruo Isaka
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
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
Priority claimed from JP30504587A external-priority patent/JPH027232A/ja
Priority claimed from JP2795988A external-priority patent/JPH01204223A/ja
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Publication of DE3850058D1 publication Critical patent/DE3850058D1/de
Application granted granted Critical
Publication of DE3850058T2 publication Critical patent/DE3850058T2/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
    • 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
    • G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
    • G11B7/125—Optical beam sources therefor, e.g. laser control circuitry specially adapted for optical storage devices; Modulators, e.g. means for controlling the size or intensity of optical spots or optical traces
    • G11B7/126—Circuits, methods or arrangements for laser control or stabilisation
    • 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
    • G11B20/10046—Improvement or modification of read or write signals filtering or equalising, e.g. setting the tap weights of an FIR filter
    • G11B20/10212—Improvement or modification of read or write signals filtering or equalising, e.g. setting the tap weights of an FIR filter compensation for data shift, e.g. pulse-crowding effects
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/36—Monitoring, i.e. supervising the progress of recording or reproducing
    • 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
    • G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
    • G11B7/005—Reproducing
DE3850058T 1987-12-01 1988-11-29 Optisches Informationsaufzeichnungsgerät. Expired - Fee Related DE3850058T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP30504587A JPH027232A (ja) 1987-12-01 1987-12-01 光学的情報記録再生装置
JP2795988A JPH01204223A (ja) 1988-02-09 1988-02-09 光学的情報記録再生装置

Publications (2)

Publication Number Publication Date
DE3850058D1 true DE3850058D1 (de) 1994-07-14
DE3850058T2 DE3850058T2 (de) 1994-12-15

Family

ID=26365966

Family Applications (1)

Application Number Title Priority Date Filing Date
DE3850058T Expired - Fee Related DE3850058T2 (de) 1987-12-01 1988-11-29 Optisches Informationsaufzeichnungsgerät.

Country Status (3)

Country Link
US (1) US4989196A (de)
EP (1) EP0319245B1 (de)
DE (1) DE3850058T2 (de)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5111443A (en) * 1988-11-02 1992-05-05 Pioneer Electronic Corporation Optical recording apparatus
JP2536947B2 (ja) * 1990-02-23 1996-09-25 パイオニア株式会社 ディスクの記録及び読取方法
US5642343A (en) * 1990-06-29 1997-06-24 Hitachi, Ltd. Magnetooptic disc apparatus and recording medium
FR2664420A1 (fr) * 1990-07-05 1992-01-10 Thomson Csf Enregistreur-lecteur optique ou magneto-optique.
JPH09147363A (ja) * 1995-11-28 1997-06-06 Olympus Optical Co Ltd 光記録媒体の復調装置
JP3545163B2 (ja) * 1997-04-10 2004-07-21 パイオニア株式会社 信号変換装置及びディジタル情報記録装置
JP2002015528A (ja) * 2000-06-29 2002-01-18 Fujitsu Ltd データ再生装置

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5528537A (en) * 1978-08-17 1980-02-29 Nec Corp Write/read circuit for digital magnetic recording
JPS56153488A (en) * 1980-04-28 1981-11-27 Mitsubishi Electric Corp Recording device
JPS5778637A (en) * 1980-10-31 1982-05-17 Matsushita Electric Ind Co Ltd Optical information recorder
US4488277A (en) * 1982-02-10 1984-12-11 North American Philips Corporation Control system for an optical data recording apparatus
JPS58158039A (ja) * 1982-03-15 1983-09-20 Toshiba Corp 光ディスクの記録再生装置
FR2546325B1 (fr) * 1983-05-20 1988-07-08 Thomson Csf Procede et dispositif de calibration de la puissance optique appliquee a un disque optique pour l'enregistrement de donnees
JPS60107741A (ja) * 1983-11-16 1985-06-13 Sansui Electric Co 光学式記録装置
EP0213623B1 (de) * 1985-09-02 1996-01-10 Sharp Kabushiki Kaisha Wiedergabegerät für optische Platten
JPS62222403A (ja) * 1986-03-24 1987-09-30 Toshiba Corp 磁気記録再生装置
US5005164A (en) * 1987-04-28 1991-04-02 Sharp Kabushiki Kaisha Recording and reproducing apparatus

Also Published As

Publication number Publication date
EP0319245A3 (en) 1990-05-16
US4989196A (en) 1991-01-29
EP0319245B1 (de) 1994-06-08
DE3850058T2 (de) 1994-12-15
EP0319245A2 (de) 1989-06-07

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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