DE3072052D1 - Optical disk and optical information processor - Google Patents

Optical disk and optical information processor

Info

Publication number
DE3072052D1
DE3072052D1 DE8080103574T DE3072052T DE3072052D1 DE 3072052 D1 DE3072052 D1 DE 3072052D1 DE 8080103574 T DE8080103574 T DE 8080103574T DE 3072052 T DE3072052 T DE 3072052T DE 3072052 D1 DE3072052 D1 DE 3072052D1
Authority
DE
Germany
Prior art keywords
optical
information processor
optical disk
optical information
disk
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
Application number
DE8080103574T
Other languages
English (en)
Inventor
Takeshi Maeda
Kazuo Shigematsu
Seiji Yonezawa
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.)
Hitachi Ltd
Original Assignee
Hitachi 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
Priority claimed from JP54079210A external-priority patent/JPS5821336B2/ja
Priority claimed from JP4923580A external-priority patent/JPS56148739A/ja
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Application granted granted Critical
Publication of DE3072052D1 publication Critical patent/DE3072052D1/de
Expired 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
    • 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
    • G11B20/14—Digital recording or reproducing using self-clocking codes
    • G11B20/1403—Digital recording or reproducing using self-clocking codes characterised by the use of two levels
    • G11B20/1423—Code representation depending on subsequent bits, e.g. delay modulation, double density code, Miller code
    • G11B20/1426—Code representation depending on subsequent bits, e.g. delay modulation, double density code, Miller code conversion to or from block codes or representations thereof
    • 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
    • G11B7/0938—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 servo format, e.g. guide tracks, pilot signals
    • 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

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Recording Or Reproduction (AREA)
DE8080103574T 1979-06-25 1980-06-24 Optical disk and optical information processor Expired DE3072052D1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP54079210A JPS5821336B2 (ja) 1979-06-25 1979-06-25 光ディスク及び情報記録装置
JP4923580A JPS56148739A (en) 1980-04-16 1980-04-16 Optical information processing unit

Publications (1)

Publication Number Publication Date
DE3072052D1 true DE3072052D1 (en) 1987-12-17

Family

ID=26389609

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8080103574T Expired DE3072052D1 (en) 1979-06-25 1980-06-24 Optical disk and optical information processor

Country Status (4)

Country Link
US (1) US4364118A (de)
EP (1) EP0021411B1 (de)
CA (1) CA1138106A (de)
DE (1) DE3072052D1 (de)

Families Citing this family (36)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4523304A (en) * 1981-04-17 1985-06-11 Matsushita Electric Industrial Co., Ltd. Optical data recording and reproducing apparatus
US4385372A (en) * 1981-05-01 1983-05-24 Drexler Technology Corporation Reflective optical data storage and laser recording media having grooved dielectric encoded prerecorded information
JPS57208647A (en) * 1981-06-18 1982-12-21 Toshiba Corp Optical disk for recording of information
US4443870A (en) * 1981-10-15 1984-04-17 Burroughs Corporation Optical memory system providing track following
US4428075A (en) * 1981-12-21 1984-01-24 Burroughs Corporation Methods of preformatting an optical disk
FR2523347B1 (fr) * 1982-03-12 1988-11-04 Thomson Csf Support d'information mobile pregrave et dispositif optique de suivi de piste mettant en oeuvre un tel support
FR2523345A1 (fr) * 1982-03-12 1983-09-16 Thomson Csf Procede et dispositif de generation de signaux de synchronisation dans un appareil optique d'ecriture-lecture de support d'information
FR2613865B1 (fr) * 1982-03-12 1995-09-01 Thomson Csf Support d'information mobile pregrave et dispositif optique de suivi de piste mettant en oeuvre un tel support
FR2523348A1 (fr) * 1982-03-12 1983-09-16 Thomson Csf Procede et dispositif de regeneration de phase de signaux de synchronisation dans un appareil optique d'ecriture-lecture de support d'information
US4456981A (en) * 1982-03-19 1984-06-26 Magnetic Peripherals Inc. Modulation system for optical recording
USRE32937E (en) * 1982-03-19 1989-05-30 Magnetic Peripherals, Inc. Modulation system for optical recording
JPS61170934A (ja) * 1985-01-25 1986-08-01 Hitachi Ltd 光デイスク記録装置
US4707816A (en) * 1985-03-29 1987-11-17 Hitachi, Ltd. Method and apparatus for composite wobbled and push-pull tracking servo system
US4748609A (en) * 1985-03-29 1988-05-31 Hitachi, Ltd. Method and apparatus for composite tracking servo system with track offset correction and rotary optical disc having at least one correction mark for correcting track offset
US5012460A (en) * 1985-05-31 1991-04-30 Information Storage, Inc. RAM head positioning and tracking system
US4959823A (en) * 1985-07-30 1990-09-25 Laser Magnetic Storage International Company Tracking and seeking system for use with an optical record carrier having a wobbled track format
US4879707A (en) * 1985-07-30 1989-11-07 Laser Magnetic Storage International Company Optical disk tracking and seeking systems specific track formats using discontinuities
US4879708A (en) * 1985-07-30 1989-11-07 Laser Magnetic Storage International Company Optical disk tracking and seeking systems specific track formats using wobbled pits
ATE84631T1 (de) * 1985-07-30 1993-01-15 Philips Nv Generatorkreis fuer spursignal und aufzeichnungstraeger dafuer.
JPH0648545B2 (ja) * 1986-01-21 1994-06-22 共同印刷株式会社 プリフォーマッティング用ピットのパターンを持った光記録媒体及びその製造方法
JPH0782656B2 (ja) * 1986-07-11 1995-09-06 株式会社日立製作所 光デイスク装置
JP2523555B2 (ja) * 1986-12-19 1996-08-14 株式会社日立製作所 光スポットの制御方法及び位置制御装置
JP2550051B2 (ja) * 1987-02-25 1996-10-30 株式会社日立製作所 光カード，光カードの記録再生方法，及び，光カード記録再生装置
US4860271A (en) * 1987-03-13 1989-08-22 Pioneer Electronic Corporation Servo circuit for generating a tracking error signal for optical disk player
EP0311372A3 (en) * 1987-10-05 1990-07-04 Hitachi Maxell Ltd. Optical apparatus for optical information recording medium
NL8702903A (nl) * 1987-12-03 1989-07-03 Philips Nv Werkwijze en inrichting voor het optekenen van informatie op een registratiedrager, alsmede een inrichting voor het uitlezen van de opgetekende informatie.
EP0320975B1 (de) * 1987-12-18 1994-11-30 Hitachi, Ltd. Verfahren und Gerät zur Datenaufnahme/Wiedergabe
ATE98040T1 (de) * 1988-01-22 1993-12-15 Philips Nv Verfahren und geraet zur aufeinanderfolgenden aufzeichnung von efm-modulierten signalen.
US5031166A (en) * 1988-01-25 1991-07-09 Laser Magnetic Storage International Company Optical disk tracking and seeking systems and specific track formats using discontinuities and circuitry therefor
US5148422A (en) * 1989-08-25 1992-09-15 Sony Corporation Optical recording medium having a data recording track with offset data storing regions
JPH0447535A (ja) * 1990-06-15 1992-02-17 Pioneer Electron Corp 光学的記録方法
JP3221100B2 (ja) * 1992-10-30 2001-10-22 ソニー株式会社 光ディスク
US5537282A (en) * 1994-07-15 1996-07-16 Treves; David Data storage disk having improved tracking capability
JP3761240B2 (ja) * 1996-02-28 2006-03-29 浜松ホトニクス株式会社 光検出装置
US7043118B2 (en) * 2002-05-22 2006-05-09 Pentax Corporation Optical communication apparatus
US7050677B2 (en) * 2002-11-05 2006-05-23 Pentax Corporation Optical fiber and method for producing the same

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3673412A (en) * 1970-03-02 1972-06-27 Trw Inc Radiant energy beam scanning method and apparatus
JPS5415727B2 (de) * 1973-02-02 1979-06-16
US3985952A (en) * 1974-02-04 1976-10-12 Zenith Radio Corporation Elasto-optic device for spot wobble in a video disc player
US3919697A (en) * 1974-06-26 1975-11-11 Battelle Development Corp Data record tracking using track identifying information in the gaps between recorded data groups
JPS6011374B2 (ja) * 1975-02-05 1985-03-25 株式会社日立製作所 情報再生方法及びその装置
DE2522593C2 (de) * 1975-05-22 1982-05-27 Philips Patentverwaltung Gmbh, 2000 Hamburg Optisches System zum wahlfreien Speichern und Wiedergewinnen digitaler Daten
FR2366636A1 (fr) * 1976-10-01 1978-04-28 Thomson Brandt Dispositif d'enregistrement optique d'information sur un support avec asservissement de la position de la tache d'enregistrement sur le support d'information
US4260858A (en) * 1978-06-26 1981-04-07 Leo Beiser Videodisc player with drive means engaging videodisc guide groove
NL7811003A (nl) * 1978-11-06 1980-05-08 Philips Nv Schijfvormige, optisch uitleesbare registratiedrager, als opslagmedium voor data-informatie.

Also Published As

Publication number Publication date
EP0021411B1 (de) 1987-11-11
US4364118A (en) 1982-12-14
CA1138106A (en) 1982-12-21
EP0021411A1 (de) 1981-01-07

Similar Documents

Publication Publication Date Title
DE3072052D1 (en) Optical disk and optical information processor
GB2053553B (en) Optical information processor
JPS55101140A (en) Information reproduction and thermoorecoding element
JPS5637835A (en) Optical record medium and reader thereof
GB2016747B (en) Optical record and read/write apparatus
DE3175616D1 (en) Optical disks and recording and reproducing system using the same
AU5455080A (en) Optically recording information
DE2966331D1 (en) Protected optical disk
JPS5661075A (en) Recording disk
JPS52152704A (en) Optical data disk reader
DE3176435D1 (en) Optical recording and reproducing system
GB2000666B (en) Recording and reproducing system
JPS5621894A (en) Optical recording member
JPS5641524A (en) Magentic recording disk and forming same
AU532078B2 (en) Recording system and cassette
JPS5616915A (en) Record and*or reproduction unit
GB2081956B (en) Disk unit with information disk
JPS5454003A (en) Preparation of optical reading information disc
JPS5610491A (en) Optical recording part
JPS5621893A (en) Optical recording part
GB2015770B (en) Optical information record
GB2055218B (en) Optical recording member
JPS54162511A (en) Recording and*or reproducing device
JPS5766545A (en) Information disk
JPS5553980A (en) Information recording and reproducing system

Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8328 Change in the person/name/address of the agent

Free format text: STREHL, P., DIPL.-ING. DIPL.-WIRTSCH.-ING. SCHUEBEL-HOPF, U., DIPL.-CHEM. DR.RER.NAT. GROENING, H., DIPL.-ING., PAT.-ANWAELTE, 8000 MUENCHEN