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JPS5398802A - Optical reproducer - Google Patents

Optical reproducer

Info

Publication number
JPS5398802A
JPS5398802A JP1358377A JP1358377A JPS5398802A JP S5398802 A JPS5398802 A JP S5398802A JP 1358377 A JP1358377 A JP 1358377A JP 1358377 A JP1358377 A JP 1358377A JP S5398802 A JPS5398802 A JP S5398802A
Authority
JP
Japan
Prior art keywords
optical reproducer
reproducer
optical
signal
improvement
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.)
Pending
Application number
JP1358377A
Other languages
English (en)
Inventor
Kazuo Okada
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.)
Mitsubishi Electric Corp
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
Priority to JP1358377A priority Critical patent/JPS5398802A/ja
Priority to GB4604/78A priority patent/GB1595683A/en
Priority to NL7801528A priority patent/NL7801528A/xx
Priority to DE2805458A priority patent/DE2805458C2/de
Publication of JPS5398802A publication Critical patent/JPS5398802A/ja
Priority to US06/102,524 priority patent/US4305144A/en
Pending 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
    • 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
    • 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)
  • Automatic Focus Adjustment (AREA)
JP1358377A 1977-02-09 1977-02-09 Optical reproducer Pending JPS5398802A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP1358377A JPS5398802A (en) 1977-02-09 1977-02-09 Optical reproducer
GB4604/78A GB1595683A (en) 1977-02-09 1978-02-06 Optically reproducing system
NL7801528A NL7801528A (nl) 1977-02-09 1978-02-09 Optisch weergeefstelsel.
DE2805458A DE2805458C2 (de) 1977-02-09 1978-02-09 Verfahren und Vorrichtung zur Korrektur bzw. zum Einstellen der Lage der Abtastspur beim optischen Auslesen von Informationen eines Aufzeichnungsträgers
US06/102,524 US4305144A (en) 1977-02-09 1979-12-11 Optically reproducing and tracking system for spiral information track

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1358377A JPS5398802A (en) 1977-02-09 1977-02-09 Optical reproducer

Publications (1)

Publication Number Publication Date
JPS5398802A true JPS5398802A (en) 1978-08-29

Family

ID=11837192

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1358377A Pending JPS5398802A (en) 1977-02-09 1977-02-09 Optical reproducer

Country Status (5)

Country Link
US (1) US4305144A (ja)
JP (1) JPS5398802A (ja)
DE (1) DE2805458C2 (ja)
GB (1) GB1595683A (ja)
NL (1) NL7801528A (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56152941U (ja) * 1980-04-14 1981-11-16

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4484319A (en) * 1980-09-19 1984-11-20 Matsushita Electric Industrial Co., Ltd. Apparatus for locating a track on disc-like optical information carriers
JPS57111837A (en) * 1980-12-27 1982-07-12 Olympus Optical Co Ltd Signal detecting system of optical information reader
FR2497378B1 (fr) * 1980-12-29 1985-06-28 Thomson Csf Dispositif compensateur de desequilibre d'un miroir de renvoi appartenant a un systeme optique d'eclairement d'un support d'information
US4458144A (en) * 1981-06-30 1984-07-03 Storage Technology Corporation Apparatus for reading information stored in a track pattern on a radiation reflecting record
JPS5819744A (ja) * 1981-07-24 1983-02-04 Sony Corp 光学式記録再生装置
JPS58147823A (ja) * 1982-02-25 1983-09-02 Mitsubishi Electric Corp トラツクずれ検出装置
US4462095A (en) * 1982-03-19 1984-07-24 Magnetic Peripherals Inc. Moving diffraction grating for an information track centering system for optical recording
JPS59139152A (ja) * 1983-01-28 1984-08-09 Canon Inc 光情報再生方法および装置

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2212070A6 (ja) * 1972-08-25 1974-07-19 Thomson Csf
FR2266932B1 (ja) * 1973-03-02 1977-09-02 Thomson Brandt
DE2445333A1 (de) * 1973-10-01 1975-04-10 Philips Nv Optoelektronisches system zur bestimmung einer abweichung zwischen der istlage und der sollage einer ebene in einem optischen abbildungssystem
US3919465A (en) * 1974-01-14 1975-11-11 Zenith Radio Corp Optical system for directly detecting spatially recorded signals
US3931459A (en) * 1974-02-04 1976-01-06 Zenith Radio Corporation Video disc
US4057833A (en) * 1974-10-03 1977-11-08 U.S. Philips Corporation Centering detection system for an apparatus for playing optically readable record carriers
JPS51149004A (en) * 1975-02-24 1976-12-21 Sony Corp Optical apparatus
JPS598892B2 (ja) * 1975-06-19 1984-02-28 ソニー株式会社 信号の光学的記録再生装置
NL182990C (nl) * 1975-07-07 1988-06-16 Philips Nv Inrichting voor het uitlezen van een stralingsreflekterende registratiedrager.
JPS5223310A (en) * 1975-08-18 1977-02-22 Victor Co Of Japan Ltd Data signal optical regeneration system
FR2325987A1 (fr) * 1975-09-29 1977-04-22 Thomson Brandt Dispositif de lecture optique d'un enregistrement
US4065786A (en) * 1975-09-30 1977-12-27 Rca Corporation Videodisc playback system
UST953002I4 (en) 1975-09-30 1976-12-07 Rca Corporation Optical videodisc playback system with plural photodetectors
NL7600843A (nl) * 1976-01-28 1977-08-01 Philips Nv Inrichting voor het uitlezen van een registratie- drager waarop informatie, bijvoorbeeld en/of ge- luidsinformatie, is aangebracht.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56152941U (ja) * 1980-04-14 1981-11-16

Also Published As

Publication number Publication date
DE2805458C2 (de) 1986-09-25
DE2805458A1 (de) 1978-08-10
NL7801528A (nl) 1978-08-11
GB1595683A (en) 1981-08-12
US4305144A (en) 1981-12-08

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