KR900016959A - 광디스크장치 - Google Patents

광디스크장치 Download PDF

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Publication number
KR900016959A
KR900016959A KR1019890005545A KR890005545A KR900016959A KR 900016959 A KR900016959 A KR 900016959A KR 1019890005545 A KR1019890005545 A KR 1019890005545A KR 890005545 A KR890005545 A KR 890005545A KR 900016959 A KR900016959 A KR 900016959A
Authority
KR
South Korea
Prior art keywords
signal
optical disc
bias current
amplification
data
Prior art date
Application number
KR1019890005545A
Other languages
English (en)
Other versions
KR960010329B1 (ko
Inventor
미키오 야마무로
Original Assignee
아오이 죠이치
가부시키가이샤 도시바
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 JP63104869A external-priority patent/JPH01276433A/ja
Priority claimed from JP63104866A external-priority patent/JP2695834B2/ja
Priority claimed from JP63104868A external-priority patent/JPH01276432A/ja
Application filed by 아오이 죠이치, 가부시키가이샤 도시바 filed Critical 아오이 죠이치
Publication of KR900016959A publication Critical patent/KR900016959A/ko
Application granted granted Critical
Publication of KR960010329B1 publication Critical patent/KR960010329B1/ko

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
    • 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
    • G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • 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
    • G11B7/002—Recording, reproducing or erasing systems characterised by the shape or form of the carrier
    • G11B7/0037—Recording, reproducing or erasing systems characterised by the shape or form of the carrier with discs
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Optical Recording Or Reproduction (AREA)

Abstract

내용 없음

Description

광디스크장치
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 본 발명에 따른 광디스크장치의 1실시예를 개략적으로 나타낸 블록도,
제2도는 제1도에 나타낸 영상회로의 구조를 개략적으로 나타낸 회로도,
제3도는 제1도에 나타낸 광디스크의 데이터기록영역과 특성데이터기록
영역을 나타낸 평면도.

Claims (1)

  1. 프리포매트데이터와 기록데이터가 기록된 기록트랙을 갖춘 광디스크(1)로 부터 데이터가 재생되는 광디스크장치에 있어서, 상기 광디스크(1)에 레이저빔을 조사시킴으로써 얻어지는 레이저빔을 전기신호로 변환시키는 광학헤드 (3)와, 2가지의 바이어스전류를 발생시키는 바이어스전류발생수단(43), 상기 프리포매트데이터의 재생시 또는 기록데이터의 재생시에 상기 바이어스전류발생수단(43)에 의해 발생되는 바이어스전류를 절환하는 절환수단(23), 이 절환수단(23)에 의해 절환되어 상기 바이어스전류발생수단(43)으로 부터 발생되는 바이어스전류에 따른 증폭율로 상기 광학헤드(3)로 부터 출력되는 전기신호를 중폭시키는 증폭수단(42), 이 증폭수단(42)으로 부터의 증폭신호에 응답해서 포락선신호를 취출하는 취출수단(45), 이 취출수단(45)으로 부터의 포락선신호와 상기 증폭수단(42)으로 부터의 증폭신호를 가산해서 가산신호를 출력하는 가산수단(R3) 및, 이 가산수단(R3)으로 부터의 가산신호를 2치화신호로 변환시키는 변환수단(44)을 구비하여 구성된 것을 특징으로 하는 광디스크장치.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019890005545A 1988-04-27 1989-04-27 광디스크장치 KR960010329B1 (ko)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
JP63-104868 1988-04-27
JP63104869A JPH01276433A (ja) 1988-04-27 1988-04-27 ディスク装置
JP63104866A JP2695834B2 (ja) 1988-04-27 1988-04-27 情報再生装置
JP63104868A JPH01276432A (ja) 1988-04-27 1988-04-27 情報再生装置
JP63-104869 1988-04-27
JP63-104866 1988-04-27

Publications (2)

Publication Number Publication Date
KR900016959A true KR900016959A (ko) 1990-11-15
KR960010329B1 KR960010329B1 (ko) 1996-07-30

Family

ID=27310337

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019890005545A KR960010329B1 (ko) 1988-04-27 1989-04-27 광디스크장치

Country Status (3)

Country Link
US (1) US5128920A (ko)
KR (1) KR960010329B1 (ko)
DE (1) DE3913992A1 (ko)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5680382A (en) * 1992-04-10 1997-10-21 Canon Kabushiki Kaisha Optical information recording apparatus and method capable of handling a plurality of card-like recording media of different reflectance
US5740435A (en) * 1994-10-31 1998-04-14 Sony Corporation Data management apparatus and method for managing data of variable lengths recorded on a record medium
JPH08293129A (ja) * 1995-04-21 1996-11-05 Matsushita Electric Ind Co Ltd 光学的情報記録媒体
JP4348851B2 (ja) * 2000-09-21 2009-10-21 ソニー株式会社 記録媒体、ディスク記録装置および方法、並びにディスク再生装置及び方法
US20050180306A1 (en) * 2004-01-29 2005-08-18 Valley Jeffrey M. Disk labeling kit and method
FR2879009A1 (fr) * 2004-12-03 2006-06-09 St Microelectronics Sa Dispositif de lecture/ecriture de disques numeriques
TWI406273B (zh) * 2010-06-22 2013-08-21 Sunplus Technology Co Ltd 判斷光碟片空白區域或資料記錄區域的方法與裝置

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3277512D1 (en) * 1981-12-01 1987-11-26 Matsushita Electric Ind Co Ltd Optical recording and reproducing disc
JPS59257A (ja) * 1982-06-25 1984-01-05 Pioneer Electronic Corp デイジタル変調信号読取装置
US4642803A (en) * 1982-08-09 1987-02-10 Drexler Technology Corporation Optical data retrieval system for multi-characteristic reflective data storage media
JPS59145726U (ja) * 1983-03-16 1984-09-28 パイオニア株式会社 情報読取装置におけるサ−ボ装置
JPS6139236A (ja) * 1984-07-27 1986-02-25 Nec Corp 光デイスク装置の読出し回路
JPH0736233B2 (ja) * 1985-04-16 1995-04-19 オリンパス光学工業株式会社 光学的情報記録再生装置
JPS61273779A (ja) * 1985-05-28 1986-12-04 Canon Inc 情報再生装置
DE3750409T2 (de) * 1986-02-07 1995-03-30 Matsushita Electric Ind Co Ltd Optische Platte und Plattengerät zum Aufzeichnen oder Wiedergeben von Daten in oder von der Platte.
JPS6355732A (ja) * 1986-08-26 1988-03-10 Pioneer Electronic Corp 光学式記録再生装置
US4961182A (en) * 1987-07-01 1990-10-02 Hitachi, Ltd. Information retrieving system with level clamping
JP2635610B2 (ja) * 1987-09-09 1997-07-30 株式会社東芝 ディスク装置
US4965692A (en) * 1989-07-31 1990-10-23 Siemens Transmission Systems, Inc. Overload detector and protection circuit

Also Published As

Publication number Publication date
DE3913992C2 (ko) 1991-10-10
US5128920A (en) 1992-07-07
KR960010329B1 (ko) 1996-07-30
DE3913992A1 (de) 1989-11-09

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