NL193079C - Registratiemediumaandrijfapparaat. - Google Patents

Registratiemediumaandrijfapparaat. Download PDF

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Publication number
NL193079C
NL193079C NL8801564A NL8801564A NL193079C NL 193079 C NL193079 C NL 193079C NL 8801564 A NL8801564 A NL 8801564A NL 8801564 A NL8801564 A NL 8801564A NL 193079 C NL193079 C NL 193079C
Authority
NL
Netherlands
Prior art keywords
signal
control signal
information
amplifier
amplification
Prior art date
Application number
NL8801564A
Other languages
English (en)
Dutch (nl)
Other versions
NL8801564A (nl
NL193079B (nl
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 NL8801564A publication Critical patent/NL8801564A/nl
Publication of NL193079B publication Critical patent/NL193079B/xx
Application granted granted Critical
Publication of NL193079C publication Critical patent/NL193079C/nl

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
    • G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
    • G11B7/005—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
    • G11B11/10532—Heads
    • G11B11/10534—Heads for recording by magnetising, demagnetising or transfer of magnetisation, by radiation, e.g. for thermomagnetic recording
    • G11B11/10536—Heads for recording by magnetising, demagnetising or transfer of magnetisation, by radiation, e.g. for thermomagnetic recording using thermic beams, e.g. lasers
    • 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
    • G11B11/10595—Control of operating function
    • G11B11/10597—Adaptations for transducing various formats on the same or different carriers
    • 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
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
    • G11B27/19—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier
    • G11B27/24—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by sensing features on the record carrier other than the transducing track ; sensing signals or marks recorded by another method than the main recording
    • 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
    • G11B7/13—Optical detectors therefor

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Recording Or Reproduction (AREA)
NL8801564A 1987-06-26 1988-06-20 Registratiemediumaandrijfapparaat. NL193079C (nl)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP16034987 1987-06-26
JP62160349A JPH0777048B2 (ja) 1987-06-26 1987-06-26 記録媒体駆動装置

Publications (3)

Publication Number Publication Date
NL8801564A NL8801564A (nl) 1989-01-16
NL193079B NL193079B (nl) 1998-05-06
NL193079C true NL193079C (nl) 1998-09-08

Family

ID=15713059

Family Applications (1)

Application Number Title Priority Date Filing Date
NL8801564A NL193079C (nl) 1987-06-26 1988-06-20 Registratiemediumaandrijfapparaat.

Country Status (4)

Country Link
US (1) US5003525A (zh)
JP (1) JPH0777048B2 (zh)
DE (1) DE3821811A1 (zh)
NL (1) NL193079C (zh)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5185730A (en) * 1989-06-01 1993-02-09 Pioneer Electronic Corporation Method for reading data from optical disk
US5105415A (en) * 1989-12-11 1992-04-14 International Business Machines Corporation Detecting magnetooptic and intensity-modulated optical signals with the same detector
JPH03226883A (ja) * 1990-01-31 1991-10-07 Mitsubishi Electric Corp 制御プロセッサ
DE4226777A1 (de) * 1992-08-13 1994-02-17 Thomson Brandt Gmbh Rauschanteilverringerung im Datensignal und optische Abtastvorrichtung
DE69318517T2 (de) * 1992-11-20 1998-11-26 Philips Electronics Nv Vorrichtung zum magnetooptischen Lesen/Schreiben
JP4118999B2 (ja) * 1998-03-20 2008-07-16 株式会社東芝 光ディスク装置及び情報再生方法
JP2007157187A (ja) * 2005-11-30 2007-06-21 Matsushita Electric Ind Co Ltd 受光装置

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL177157C (nl) * 1975-02-28 1985-08-01 Philips Nv Inrichting voor het uitlezen van een vlakke registratiedrager met een optisch uitleesbare informatiestruktuur.
FR2313716A1 (fr) * 1975-06-03 1976-12-31 Thomson Brandt Systeme optique de lecture par reflexion d'un support d'information
FR2325987A1 (fr) * 1975-09-29 1977-04-22 Thomson Brandt Dispositif de lecture optique d'un enregistrement
US4065786A (en) * 1975-09-30 1977-12-27 Rca Corporation Videodisc playback system
GB1532345A (en) * 1976-06-25 1978-11-15 Hitachi Ltd Information play-back apparatus
NL7904724A (nl) * 1979-06-18 1980-12-22 Philips Nv Optische aftastinrichting met fokusseerstelsel.
JPS57113428A (en) * 1980-12-29 1982-07-14 Pioneer Video Corp Focus servo device
FR2497378B1 (fr) * 1980-12-29 1985-06-28 Thomson Csf Dispositif compensateur de desequilibre d'un miroir de renvoi appartenant a un systeme optique d'eclairement d'un support d'information
JPS57147148A (en) * 1981-03-05 1982-09-10 Olympus Optical Co Ltd Information reproducer with magnetooptic system
JPS5919250A (ja) * 1982-07-21 1984-01-31 Hitachi Ltd 情報の記録再生装置
JPS60119641A (ja) * 1983-12-01 1985-06-27 Pioneer Electronic Corp トラッキングエラ−信号発生装置
JPS60234235A (ja) * 1984-05-04 1985-11-20 Matsushita Electric Ind Co Ltd 光学式記録再生装置
DE3678311D1 (de) * 1985-02-15 1991-05-02 Hitachi Ltd Optisches plattengeraet.
US4740940A (en) * 1985-03-11 1988-04-26 Matsushita Electric Industrial Co., Ltd. Optical information read apparatus
JPH06101127B2 (ja) * 1985-03-13 1994-12-12 シャープ株式会社 光学ヘツド
JPH0762922B2 (ja) * 1985-05-22 1995-07-05 株式会社日立製作所 光磁気情報処理方法及び装置
JPS6251038A (ja) * 1985-08-30 1987-03-05 Canon Inc 光学的情報記録再生装置
NL8502802A (nl) * 1985-10-14 1987-05-04 Philips Nv Inrichting voor het uitlezen en/of inschrijven van een optische spoorvormige informatiestruktuur.

Also Published As

Publication number Publication date
JPH0777048B2 (ja) 1995-08-16
DE3821811C2 (zh) 1991-10-31
US5003525A (en) 1991-03-26
DE3821811A1 (de) 1989-01-05
NL8801564A (nl) 1989-01-16
JPS644943A (en) 1989-01-10
NL193079B (nl) 1998-05-06

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Legal Events

Date Code Title Description
A1A A request for search or an international-type search has been filed
BB A search report has been drawn up
BC A request for examination has been filed
V4 Discontinued because of reaching the maximum lifetime of a patent

Effective date: 20080620