DE3674015D1 - Wiedergabe von optisch aufgezeichneten signalen. - Google Patents

Wiedergabe von optisch aufgezeichneten signalen.

Info

Publication number
DE3674015D1
DE3674015D1 DE8686101363T DE3674015T DE3674015D1 DE 3674015 D1 DE3674015 D1 DE 3674015D1 DE 8686101363 T DE8686101363 T DE 8686101363T DE 3674015 T DE3674015 T DE 3674015T DE 3674015 D1 DE3674015 D1 DE 3674015D1
Authority
DE
Germany
Prior art keywords
playback
recorded signals
optically recorded
optically
signals
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 - Lifetime
Application number
DE8686101363T
Other languages
English (en)
Inventor
Michiyoshi Nagashima
Yoshinari Takemura
Kazuaki Obara
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Application granted granted Critical
Publication of DE3674015D1 publication Critical patent/DE3674015D1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
    • G11B7/005—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
    • G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
    • 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
    • G11B7/135—Means for guiding the beam from the source to the record carrier or from the record carrier to the detector

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Optical Head (AREA)
DE8686101363T 1985-02-08 1986-02-03 Wiedergabe von optisch aufgezeichneten signalen. Expired - Lifetime DE3674015D1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP60023869A JPH0792916B2 (ja) 1985-02-08 1985-02-08 光学記録信号再生方法

Publications (1)

Publication Number Publication Date
DE3674015D1 true DE3674015D1 (de) 1990-10-18

Family

ID=12122447

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8686101363T Expired - Lifetime DE3674015D1 (de) 1985-02-08 1986-02-03 Wiedergabe von optisch aufgezeichneten signalen.

Country Status (5)

Country Link
US (1) US4969142A (de)
EP (1) EP0190698B1 (de)
JP (1) JPH0792916B2 (de)
CN (1) CN1010441B (de)
DE (1) DE3674015D1 (de)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5113386A (en) * 1989-10-30 1992-05-12 Eastman Kodak Company Focus and tracking error detector apparatus for optical and magneto-optical information storage systems
US5712840A (en) * 1990-03-16 1998-01-27 Canon Kabushiki Kaisha Optical information recording/reproduciing apparatus having two-division detectors
DE69126160T2 (de) * 1990-03-16 1997-10-09 Canon Kk Aufzeichnungs-/Wiedergabegerät für optische Information
US5247510A (en) * 1990-06-29 1993-09-21 Digital Equipment Corporation Increasing storage density of optical data media by detecting a selected portion of a light spot image corresponding to a single domain
FR2679059B1 (fr) * 1991-07-09 1993-09-24 Thomson Csf Systeme de lecture de disque optique.
JPH07326066A (ja) * 1994-05-31 1995-12-12 Asahi Optical Co Ltd 光学式情報記録再生装置
US5757763A (en) * 1994-07-12 1998-05-26 Massachusetts Institute Of Technology Optical information storage via amplitude modulation
JP3707812B2 (ja) * 1994-09-27 2005-10-19 ソニー株式会社 光記録方法、光記録装置及び光記録媒体
WO1997001167A1 (en) * 1995-06-21 1997-01-09 Massachusetts Institute Of Technology Apparatus and method for accessing data on multilayered optical media
KR0165425B1 (ko) * 1995-08-18 1999-03-20 김광호 고밀도 기록재생을 위한 광픽업
KR100200868B1 (ko) * 1995-12-22 1999-06-15 윤종용 광픽업 장치

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7803517A (nl) * 1978-04-03 1979-10-05 Philips Nv Registratiedrager met een optisch uitleesbare fase- struktuur en inrichting voor het uitlezen.
NL186353C (nl) * 1979-06-12 1990-11-01 Philips Nv Inrichting voor het afbeelden van een maskerpatroon op een substraat voorzien van een opto-elektronisch detektiestelsel voor het bepalen van een afwijking tussen het beeldvlak van een projektielenzenstelsel en het substraatvlak.
US4349901A (en) * 1980-06-20 1982-09-14 Eastman Kodak Company Apparatus and method for reading optical discs
JPS57105828A (en) * 1980-12-19 1982-07-01 Matsushita Electric Ind Co Ltd Optical disk recording and reproducing system
US4462095A (en) * 1982-03-19 1984-07-24 Magnetic Peripherals Inc. Moving diffraction grating for an information track centering system for optical recording
JPS5936335A (ja) * 1982-08-24 1984-02-28 Matsushita Electric Ind Co Ltd 光デイスク記録再生方法および光デイスク
JPS5958637A (ja) * 1982-09-28 1984-04-04 Sony Corp 光学式再生装置
JPS59139152A (ja) * 1983-01-28 1984-08-09 Canon Inc 光情報再生方法および装置

Also Published As

Publication number Publication date
US4969142A (en) 1990-11-06
EP0190698A1 (de) 1986-08-13
EP0190698B1 (de) 1990-09-12
JPS61182635A (ja) 1986-08-15
CN86100753A (zh) 1986-08-27
JPH0792916B2 (ja) 1995-10-09
CN1010441B (zh) 1990-11-14

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8320 Willingness to grant licences declared (paragraph 23)
8339 Ceased/non-payment of the annual fee