NL8300705A - Inrichting voor het detecteren van een spoorafwijking. - Google Patents

Inrichting voor het detecteren van een spoorafwijking. Download PDF

Info

Publication number
NL8300705A
NL8300705A NL8300705A NL8300705A NL8300705A NL 8300705 A NL8300705 A NL 8300705A NL 8300705 A NL8300705 A NL 8300705A NL 8300705 A NL8300705 A NL 8300705A NL 8300705 A NL8300705 A NL 8300705A
Authority
NL
Netherlands
Prior art keywords
light
track
auxiliary
dots
recording medium
Prior art date
Application number
NL8300705A
Other languages
English (en)
Dutch (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 NL8300705A publication Critical patent/NL8300705A/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
    • G11B7/08—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
    • G11B7/0901—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 for track following only
    • G11B7/0903—Multi-beam tracking systems

Landscapes

  • Optical Recording Or Reproduction (AREA)
  • Optical Head (AREA)
NL8300705A 1982-02-25 1983-02-25 Inrichting voor het detecteren van een spoorafwijking. NL8300705A (nl)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP3079682 1982-02-25
JP57030796A JPS58147823A (ja) 1982-02-25 1982-02-25 トラツクずれ検出装置

Publications (1)

Publication Number Publication Date
NL8300705A true NL8300705A (nl) 1983-09-16

Family

ID=12313639

Family Applications (1)

Application Number Title Priority Date Filing Date
NL8300705A NL8300705A (nl) 1982-02-25 1983-02-25 Inrichting voor het detecteren van een spoorafwijking.

Country Status (4)

Country Link
US (1) US4498159A (ja)
JP (1) JPS58147823A (ja)
DE (1) DE3306144A1 (ja)
NL (1) NL8300705A (ja)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4695992A (en) * 1983-01-31 1987-09-22 Canon Kabushiki Kaisha Optical information recording-reproducing apparatus in which the relative position of a primary beam and secondary beams on recording medium is varied during recording and reproduction of information
US4720825A (en) * 1984-02-06 1988-01-19 Asahi Kogaku Kogyo Kabushiki Kaisha Optical data reproducing devices having improved trick play capability
US4679184A (en) * 1984-06-08 1987-07-07 Matsushita Electric Industrial Co., Ltd. Optical recording and reproducing apparatus having erasing beam spot with asymmetrical intensity distribution
EP0228620B1 (en) * 1985-12-10 1991-06-05 Nec Corporation Optical head comprising a diffraction grating for directing two or more diffracted beams to optical detectors
HU196518B (en) * 1986-12-22 1988-11-28 Itex Kutato Fejlesztoe Termelo Method and apparatus for the transformation and formation of laser beam
JPH0675307B2 (ja) * 1987-01-30 1994-09-21 富士写真フイルム株式会社 光磁気記録媒体用ピツクアツプ
JPH0638291B2 (ja) * 1987-06-22 1994-05-18 三菱電機株式会社 光学式情報記録再生装置
EP0539354B1 (en) * 1987-08-24 1997-06-04 Sharp Kabushiki Kaisha Optical pickup apparatus
JPH01171129A (ja) * 1987-12-25 1989-07-06 Copal Co Ltd 光学ヘッド及びトラッキング方法
JPH01302543A (ja) * 1988-02-26 1989-12-06 Fujitsu Ltd トラッキングエラー検知方法とその検知方法に使用する回折格子・光検知器
NL8802988A (nl) * 1988-12-05 1990-07-02 Philips Nv Inrichting voor het met optische straling aftasten van een informatievlak.
JPH077511B2 (ja) * 1989-02-21 1995-01-30 パイオニア株式会社 ディスクプレーヤにおける読取位置外れ検出装置
JP2522548B2 (ja) * 1989-07-06 1996-08-07 シャープ株式会社 光ピックアップ装置
JP2680440B2 (ja) * 1989-09-14 1997-11-19 シャープ株式会社 光ピックアップ装置
US5475662A (en) * 1992-05-13 1995-12-12 Matsushita Electric Industrial Co., Ltd. Optical disc apparatus with tracking error compensation
JPH10149564A (ja) * 1996-11-15 1998-06-02 Teac Corp 光ピックアップ装置及びトラッキングエラー検出方法
JP3402997B2 (ja) * 1997-03-12 2003-05-06 株式会社リコー 光ピックアップ装置
JP4321469B2 (ja) * 2005-03-24 2009-08-26 ソニー株式会社 ディスク記録装置および方法、ならびに、記録制御プログラム

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1013854A (en) * 1973-02-20 1977-07-12 John S. Winslow Videodisc mastering system
JPS524218B2 (ja) * 1973-05-03 1977-02-02
FR2235448B1 (ja) * 1973-06-29 1976-05-07 Thomson Brandt
JPS5398802A (en) * 1977-02-09 1978-08-29 Mitsubishi Electric Corp Optical reproducer
JPS626580Y2 (ja) * 1979-11-17 1987-02-16

Also Published As

Publication number Publication date
DE3306144A1 (de) 1983-09-01
US4498159A (en) 1985-02-05
JPS58147823A (ja) 1983-09-02

Similar Documents

Publication Publication Date Title
NL8300705A (nl) Inrichting voor het detecteren van een spoorafwijking.
EP0219170B1 (en) Apparatus for reading and/or recording a trackwise arranged optical information structure
US4665310A (en) Apparatus for optically scanning an information plane wherein a diffraction grating splits the beam into two sub-beams
GB2170632A (en) Optical recording medium
EP0357323A2 (en) Optical pickup device
KR100806214B1 (ko) 보정된 에러 신호 생성 방법 및 장치
US4998235A (en) Focus detection system for an optical disk drive using photo sensor elements in the far field of information pits
US7483360B2 (en) Optical pickup device using polarizing hologram element and hologram laser therefor
EP1286343B1 (en) Information recording/reproducing apparatus
KR100763586B1 (ko) 광학 픽업 장치 및 광학 픽업 장치의 트래킹 서보 방법
CN101189671A (zh) 具有3点径向跟踪的光学系统
JPH0827961B2 (ja) ホログラム式光ヘッドの光検出器
US20050078575A1 (en) Optical head, LD module, optical recording-and-reproducing apparatus and diffraction element used in the optical recording-and-reproducing apparatus
EP0762402A1 (en) Optical read-out head capable of improved read-out of media with different pit heights
JP3381873B2 (ja) 光ピツクアツプ装置及びトラツキングエラー検出方法
NL9301055A (nl) Het volgen van het beeldgebied van niet-ingedeelde optische gegevensdragers, met gebruik van een optische kop met twee golflengten.
GB2137746A (en) Apparatus for Detecting Deviations of Position from a Reference
JPH0758551B2 (ja) 光学的情報再生装置
US20060193221A1 (en) Optical head unit and optical disc apparatus
JP3713132B2 (ja) 光ピックアップ装置の製造方法
JPH03232123A (ja) 光スポット位置決め制御装置
JP2680440B2 (ja) 光ピックアップ装置
JPH0534734B2 (ja)
SU1117693A1 (ru) Устройство слежени за информационной дорожкой
JPH0517612B2 (ja)

Legal Events

Date Code Title Description
A1A A request for search or an international-type search has been filed
A85 Still pending on 85-01-01
BB A search report has been drawn up
BV The patent application has lapsed