DE3770283D1 - Optisches speichergeraet. - Google Patents

Optisches speichergeraet.

Info

Publication number
DE3770283D1
DE3770283D1 DE8787101642T DE3770283T DE3770283D1 DE 3770283 D1 DE3770283 D1 DE 3770283D1 DE 8787101642 T DE8787101642 T DE 8787101642T DE 3770283 T DE3770283 T DE 3770283T DE 3770283 D1 DE3770283 D1 DE 3770283D1
Authority
DE
Germany
Prior art keywords
storage device
optical storage
optical
storage
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
DE8787101642T
Other languages
English (en)
Inventor
Hiroshi Fuji
Shigemi Maeda
Noriaki Sakamoto
Shigeo Terashima
Takeshi Yamaguchi
Kentaroh Tusji
Kunio Kojima
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.)
Sharp Corp
Original Assignee
Sharp 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
Priority claimed from JP2663686A external-priority patent/JPS62184629A/ja
Priority claimed from JP4576186A external-priority patent/JPS62202360A/ja
Priority claimed from JP7329886A external-priority patent/JPH0677350B2/ja
Application filed by Sharp Corp filed Critical Sharp Corp
Application granted granted Critical
Publication of DE3770283D1 publication Critical patent/DE3770283D1/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
    • 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
    • G11B11/10504—Recording
    • 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
    • G11B11/10517—Overwriting or erasing
    • 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
    • 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
    • G11B27/28—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording
    • G11B27/30—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording on the same track as 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
    • G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
DE8787101642T 1986-02-07 1987-02-06 Optisches speichergeraet. Expired - Lifetime DE3770283D1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2663686A JPS62184629A (ja) 1986-02-07 1986-02-07 光メモリ装置
JP4576186A JPS62202360A (ja) 1986-02-28 1986-02-28 光メモリ装置の信号検出回路
JP7329886A JPH0677350B2 (ja) 1986-03-28 1986-03-28 光磁気メモリ装置

Publications (1)

Publication Number Publication Date
DE3770283D1 true DE3770283D1 (de) 1991-07-04

Family

ID=27285486

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8787101642T Expired - Lifetime DE3770283D1 (de) 1986-02-07 1987-02-06 Optisches speichergeraet.

Country Status (3)

Country Link
US (3) US4924447A (de)
EP (1) EP0232867B1 (de)
DE (1) DE3770283D1 (de)

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4985881A (en) * 1983-12-23 1991-01-15 Hitachi, Ltd. Record carrier for a magneto-optical disc memory having guide grooves of a plurality of tracks disposed with a predetermined relation to light spot diameter
US4906874A (en) * 1988-01-22 1990-03-06 Sharp Kabushiki Kaisha Analog signal switching device for use in an optical memory
JP2703576B2 (ja) * 1988-10-03 1998-01-26 株式会社日立製作所 光デイスク装置
JPH03219426A (ja) * 1988-12-26 1991-09-26 Canon Inc 光学的情報記録媒体及び光学的情報記録再生装置及び方法
JP2698784B2 (ja) * 1989-07-21 1998-01-19 シャープ株式会社 情報記録再生装置
JP2779233B2 (ja) * 1989-10-11 1998-07-23 シャープ株式会社 光記録再生装置
US5212678A (en) * 1989-11-23 1993-05-18 U.S. Philips Corporation System for recording and reading information on a record carrier at a constant scanning speed independent of the bit rate of such information
JP2840782B2 (ja) * 1990-03-07 1998-12-24 ソニー株式会社 ディスクプレーヤ
US5268894A (en) * 1990-04-13 1993-12-07 Pioneer Electronic Corporation Apparatus for reproducing information by delaying and attenuating a reproducing signal
JP2809479B2 (ja) * 1990-05-29 1998-10-08 オリンパス光学工業株式会社 データ記録再生装置
JPH04149824A (ja) * 1990-10-12 1992-05-22 Pioneer Electron Corp 光ディスクの情報読取装置
JP2795758B2 (ja) * 1991-08-02 1998-09-10 シャープ株式会社 光磁気記録再生装置の情報再生回路
JP2810270B2 (ja) * 1992-03-13 1998-10-15 株式会社日立製作所 信号再生方法
US5497361A (en) * 1992-03-13 1996-03-05 Hitachi, Ltd. Information reproducing apparatus with a DC level correcting capability
DE69313810T2 (de) * 1992-05-13 1998-02-26 Matsushita Electric Ind Co Ltd Optische platteneinheit
US5265085A (en) * 1992-06-15 1993-11-23 International Business Machines Simultaneous MO and ROM optical disk signal detection
JP3306938B2 (ja) * 1992-11-25 2002-07-24 ソニー株式会社 同期符号抽出回路
US5424881A (en) 1993-02-01 1995-06-13 Cirrus Logic, Inc. Synchronous read channel
US5388085A (en) * 1993-03-03 1995-02-07 International Business Machines Corporation Apparatus and method for accessing sectors of a rotating disk
JP3275547B2 (ja) * 1994-07-01 2002-04-15 株式会社デンソー 電圧−周波数変換回路
JP3595992B2 (ja) * 1996-05-22 2004-12-02 ソニー株式会社 記録媒体駆動装置および記録媒体駆動方法
KR0182501B1 (ko) * 1996-06-12 1999-04-15 김광호 하드디스크드라이버의 채널특성 파라메타 측정장치
JP4475833B2 (ja) * 2001-03-02 2010-06-09 日本テキサス・インスツルメンツ株式会社 ミラー検出信号生成回路
KR100416594B1 (ko) * 2001-04-11 2004-02-05 삼성전자주식회사 디스크 구동기에 있어서 알에프 신호의 슬라이스 및슬라이스 레벨 보상 장치와 그 방법
TWI258134B (en) * 2003-04-10 2006-07-11 Via Optical Solution Inc Method and related apparatus for evaluating beta-parameter according to write-in result of portion of write-in data with specific content while performing optimal power control of optical disk drive

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3979670A (en) * 1973-08-17 1976-09-07 Western Electric Company, Inc. Apparatus for detecting and measuring peak-to-peak values in electrical signals
US4241455A (en) * 1977-12-29 1980-12-23 Sperry Corporation Data receiving and processing circuit
CA1165825A (en) * 1979-10-26 1984-04-17 Masato Tanaka Data extracting circuit
JPS5757025A (en) * 1980-09-24 1982-04-06 Sony Corp Waveform converting circuit
JPS57105828A (en) * 1980-12-19 1982-07-01 Matsushita Electric Ind Co Ltd Optical disk recording and reproducing system
JPS5826336A (ja) * 1981-08-06 1983-02-16 Pioneer Electronic Corp 光磁気記録方式の記録再生装置
JPS58158038A (ja) * 1982-03-15 1983-09-20 Toshiba Corp 光デイスク装置
JPS5945646A (ja) * 1982-09-07 1984-03-14 Hitachi Ltd 光学的情報再生装置
JPS59165212A (ja) * 1983-03-08 1984-09-18 Sony Corp 情報信号再生装置
JPS59198537A (ja) * 1983-04-22 1984-11-10 Matsushita Electric Ind Co Ltd 光学的記録再生装置
US4648085A (en) * 1983-05-12 1987-03-03 Nec Corporation Optical information recording and reading apparatus with error correction
EP0135750B1 (de) * 1983-08-26 1988-06-22 Hitachi, Ltd. Aufzeichnungs- und Wiedergabegerät für optische Informationen
NL8402943A (nl) * 1983-09-29 1985-04-16 Toshiba Kk Optische kop.
US4646281A (en) * 1984-02-08 1987-02-24 Laser Magnetic Storage International Company Read channel for an optical recorder
US4656079A (en) * 1984-06-15 1987-04-07 Matsushita Electric Industrial Co., Ltd. Reversible optical information recording medium
JPS61273779A (ja) * 1985-05-28 1986-12-04 Canon Inc 情報再生装置
EP0228646A3 (en) * 1985-12-20 1987-10-14 Hitachi, Ltd. A signal processing apparatus for disc memory devices

Also Published As

Publication number Publication date
US4999824A (en) 1991-03-12
EP0232867B1 (de) 1991-05-29
EP0232867A1 (de) 1987-08-19
US5134607A (en) 1992-07-28
US4924447A (en) 1990-05-08

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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