NL8003151A - Inrichting voor het optisch volgen van een spoor op een registratiedrager. - Google Patents

Inrichting voor het optisch volgen van een spoor op een registratiedrager. Download PDF

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Publication number
NL8003151A
NL8003151A NL8003151A NL8003151A NL8003151A NL 8003151 A NL8003151 A NL 8003151A NL 8003151 A NL8003151 A NL 8003151A NL 8003151 A NL8003151 A NL 8003151A NL 8003151 A NL8003151 A NL 8003151A
Authority
NL
Netherlands
Prior art keywords
radiation
record carrier
radiation beam
selector
optical
Prior art date
Application number
NL8003151A
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 NL8003151A publication Critical patent/NL8003151A/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
    • 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
    • G11B7/095—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 specially adapted for discs, e.g. for compensation of eccentricity or wobble
    • G11B7/0953—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 specially adapted for discs, e.g. for compensation of eccentricity or wobble to compensate for eccentricity of the disc or disc tracks
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Recording Or Reproduction (AREA)
NL8003151A 1979-06-04 1980-05-30 Inrichting voor het optisch volgen van een spoor op een registratiedrager. NL8003151A (nl)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP7088879A JPS55163635A (en) 1979-06-04 1979-06-04 Optical tracking device
JP7088879 1979-06-04

Publications (1)

Publication Number Publication Date
NL8003151A true NL8003151A (nl) 1980-12-08

Family

ID=13444509

Family Applications (1)

Application Number Title Priority Date Filing Date
NL8003151A NL8003151A (nl) 1979-06-04 1980-05-30 Inrichting voor het optisch volgen van een spoor op een registratiedrager.

Country Status (4)

Country Link
US (1) US4346471A (sv)
JP (1) JPS55163635A (sv)
DE (1) DE3020855A1 (sv)
NL (1) NL8003151A (sv)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57176568A (en) * 1981-04-22 1982-10-29 Pioneer Electronic Corp Relative movement controller between pickup and recording track for information reader
FR2504765A1 (fr) * 1981-04-27 1982-10-29 Thomson Csf Dispositif d'enregistrement-lecture comprenant un support mobile d'informations du type comportant une piste pregravee
JPS5814332A (ja) * 1981-07-16 1983-01-27 Mitsubishi Electric Corp 光学式情報再生装置
JPS5817549A (ja) * 1981-07-22 1983-02-01 Hitachi Ltd 光学的トラツク追従装置
FR2511537B1 (fr) * 1981-08-14 1986-09-05 Thomson Csf Dispositif optique de suivi de piste a echantillonnage
JPS5841447A (ja) * 1981-09-04 1983-03-10 Hitachi Ltd 光スポット制御信号検出方法
US4720825A (en) * 1984-02-06 1988-01-19 Asahi Kogaku Kogyo Kabushiki Kaisha Optical data reproducing devices having improved trick play capability
US4598393A (en) * 1984-04-06 1986-07-01 Drexler Technology Corporation Three-beam optical servo tracking system with two-track parallel readout
JPS6134734A (ja) * 1984-07-25 1986-02-19 Sony Corp 光学式デイスクプレ−ヤ
US4721850A (en) * 1985-03-06 1988-01-26 Olympus Optical Co., Ltd. Optical pickup device having a detector for detecting the light emitting intensity variation of a semiconductor light emitting element
CA1261467A (en) * 1985-11-28 1989-09-26 Akira Minami Focus servomechanism control system of optical disc system having offset setting means
US5155718A (en) * 1988-01-25 1992-10-13 Olympus Optical Co., Ltd. Optical record medium reading apparatus having a de-focussed light beam projected on an optical record medium
JP2642672B2 (ja) * 1988-06-29 1997-08-20 富士通株式会社 光ディスク装置

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5415484B2 (sv) * 1975-02-26 1979-06-15

Also Published As

Publication number Publication date
DE3020855C2 (sv) 1990-08-16
JPS55163635A (en) 1980-12-19
US4346471A (en) 1982-08-24
DE3020855A1 (de) 1980-12-18

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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
A85 Still pending on 85-01-01
BC A request for examination has been filed
BV The patent application has lapsed