DE3885131T2 - Optisches Plattenaufzeichnungs- oder Wiedergabegerät und Fokussierungskontrollsysteme dafür. - Google Patents

Optisches Plattenaufzeichnungs- oder Wiedergabegerät und Fokussierungskontrollsysteme dafür.

Info

Publication number
DE3885131T2
DE3885131T2 DE88302578T DE3885131T DE3885131T2 DE 3885131 T2 DE3885131 T2 DE 3885131T2 DE 88302578 T DE88302578 T DE 88302578T DE 3885131 T DE3885131 T DE 3885131T DE 3885131 T2 DE3885131 T2 DE 3885131T2
Authority
DE
Germany
Prior art keywords
optical disc
reproducing apparatus
control systems
focus control
disc 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
DE88302578T
Other languages
English (en)
Other versions
DE3885131D1 (de
Inventor
Shigeaki C O Sony Corpor Wachi
Eiji C O Sony Corporat Kumagai
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
Priority claimed from JP62069053A external-priority patent/JP2595959B2/ja
Priority claimed from JP62206970A external-priority patent/JP2565233B2/ja
Priority claimed from JP63016838A external-priority patent/JP2842533B2/ja
Application filed by Sony Corp filed Critical Sony Corp
Application granted granted Critical
Publication of DE3885131D1 publication Critical patent/DE3885131D1/de
Publication of DE3885131T2 publication Critical patent/DE3885131T2/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
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
    • 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
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
    • G11B7/085—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam into, or out of, its operative position or across tracks, otherwise than during the transducing operation, e.g. for adjustment or preliminary positioning or track change or selection
    • G11B7/08505—Methods for track change, selection or preliminary positioning by moving the head
    • G11B7/08511—Methods for track change, selection or preliminary positioning by moving the head with focus pull-in only
DE88302578T 1987-03-25 1988-03-24 Optisches Plattenaufzeichnungs- oder Wiedergabegerät und Fokussierungskontrollsysteme dafür. Expired - Fee Related DE3885131T2 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP62069053A JP2595959B2 (ja) 1987-03-25 1987-03-25 光デイスク記録再生装置
JP62206970A JP2565233B2 (ja) 1987-08-20 1987-08-20 光デイスク装置
JP63016838A JP2842533B2 (ja) 1988-01-29 1988-01-29 光ディスク記録／再生装置

Publications (2)

Publication Number Publication Date
DE3885131D1 DE3885131D1 (de) 1993-12-02
DE3885131T2 true DE3885131T2 (de) 1994-02-24

Family

ID=27281583

Family Applications (1)

Application Number Title Priority Date Filing Date
DE88302578T Expired - Fee Related DE3885131T2 (de) 1987-03-25 1988-03-24 Optisches Plattenaufzeichnungs- oder Wiedergabegerät und Fokussierungskontrollsysteme dafür.

Country Status (5)

Country Link
US (1) US5003523A (de)
EP (1) EP0284377B1 (de)
KR (1) KR960011789B1 (de)
DE (1) DE3885131T2 (de)
HK (1) HK119895A (de)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02161620A (ja) * 1988-12-14 1990-06-21 Asahi Optical Co Ltd 自動利得制御装置
JP2751456B2 (ja) * 1989-09-13 1998-05-18 ソニー株式会社 光テープ記録再生方法
US5199011A (en) * 1990-01-17 1993-03-30 Hewlett-Packard Company Apparatus for attenuating optical crosstalk induced components of a focus error signal in an optical disk drive
JPH0432030A (ja) * 1990-05-29 1992-02-04 Olympus Optical Co Ltd 光カード記録再生装置
US5245598A (en) * 1990-06-27 1993-09-14 Burroughs Alan C Method and apparatus for seek operations in an optical recording system including holding a focus error signal at track crossings
US5315168A (en) * 1993-04-28 1994-05-24 Fujitsu Limited Peak hold circuit with improved linearity
US6603301B2 (en) * 2001-07-26 2003-08-05 Agilent Technologies, Inc. Multiple range current measurement system with low power dissipation, fast setting time, and low common mode voltage error
US11942951B2 (en) * 2022-01-31 2024-03-26 Dwellwell Analytics, Inc. Conditional track and hold amplifier

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5845666A (ja) * 1981-09-07 1983-03-16 Sony Corp デイスク再生装置のサ−ボ回路
JPS58177574A (ja) * 1982-04-10 1983-10-18 Sony Corp デイスク再生装置のサ−ボ回路
JPS59157854A (ja) * 1983-02-28 1984-09-07 Sony Corp 光学式デイスク・プレ−ヤ−の制御装置
JPS6070924U (ja) * 1983-10-19 1985-05-20 パイオニア株式会社 焦点誤差検出装置
JPS6139940A (ja) * 1984-07-31 1986-02-26 Pioneer Electronic Corp 光情報デイスク再生装置
JP2565485B2 (ja) * 1984-09-14 1996-12-18 オリンパス光学工業株式会社 光学的記録再生装置
JPS61117737A (ja) * 1984-11-13 1986-06-05 Pioneer Electronic Corp フオ−カスサ−ボ装置
JPS61188745A (ja) * 1985-02-15 1986-08-22 Olympus Optical Co Ltd フオ−カスサ−ボ制御方式
JPS6278732A (ja) * 1985-10-01 1987-04-11 Olympus Optical Co Ltd 光学的情報記録再生装置
JP2534988B2 (ja) * 1986-04-30 1996-09-18 株式会社リコー 情報信号再生方法

Also Published As

Publication number Publication date
US5003523A (en) 1991-03-26
EP0284377A3 (en) 1990-07-11
EP0284377B1 (de) 1993-10-27
KR880011748A (ko) 1988-10-31
HK119895A (en) 1995-07-28
KR960011789B1 (ko) 1996-08-30
DE3885131D1 (de) 1993-12-02
EP0284377A2 (de) 1988-09-28

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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