JPS54130103A - Device for writing and reading information on recording carrier body and recording carrier body - Google Patents

Device for writing and reading information on recording carrier body and recording carrier body

Info

Publication number
JPS54130103A
JPS54130103A JP3166179A JP3166179A JPS54130103A JP S54130103 A JPS54130103 A JP S54130103A JP 3166179 A JP3166179 A JP 3166179A JP 3166179 A JP3166179 A JP 3166179A JP S54130103 A JPS54130103 A JP S54130103A
Authority
JP
Japan
Prior art keywords
carrier body
recording carrier
writing
reading information
recording
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.)
Granted
Application number
JP3166179A
Other languages
English (en)
Other versions
JPS6259373B2 (ja
Inventor
Edeyuarudo Fuan Rosum Herarudo
Yoozefu Kureuterusu Uiruherumu
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of JPS54130103A publication Critical patent/JPS54130103A/ja
Publication of JPS6259373B2 publication Critical patent/JPS6259373B2/ja
Granted 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
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/2407—Tracks or pits; Shape, structure or physical properties thereof
    • G11B7/24085—Pits
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/02—Editing, e.g. varying the order of information signals recorded on, or reproduced from, record carriers
    • G11B27/022—Electronic editing of analogue information signals, e.g. audio or video signals
    • G11B27/026—Electronic editing of analogue information signals, e.g. audio or video signals on discs
    • 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
    • G11B7/007—Arrangement of the information on the record carrier, e.g. form of tracks, actual track shape, e.g. wobbled, or cross-section, e.g. v-shaped; Sequential information structures, e.g. sectoring or header formats within a track
    • 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
    • G11B7/081—Disposition or mounting of heads or light sources relatively to record carriers for time base error correction by moving the light 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
    • G11B7/08—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
    • G11B7/08—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
    • G11B7/14—Heads, e.g. forming of the optical beam spot or modulation of the optical beam specially adapted to record on, or to reproduce from, more than one track simultaneously
    • 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
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Recording Or Reproduction (AREA)
JP3166179A 1978-03-16 1979-03-16 Device for writing and reading information on recording carrier body and recording carrier body Granted JPS54130103A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7802860A NL7802860A (nl) 1978-03-16 1978-03-16 Registratiedragerlichaam en registratiedrager voor optische informatie en inrichting voor het inschrijven en uitlezen.

Publications (2)

Publication Number Publication Date
JPS54130103A true JPS54130103A (en) 1979-10-09
JPS6259373B2 JPS6259373B2 (ja) 1987-12-10

Family

ID=19830504

Family Applications (2)

Application Number Title Priority Date Filing Date
JP3166179A Granted JPS54130103A (en) 1978-03-16 1979-03-16 Device for writing and reading information on recording carrier body and recording carrier body
JP61191575A Granted JPS6251043A (ja) 1978-03-16 1986-08-15 光学記録キヤリヤに情報を書込みかつ読取る装置

Family Applications After (1)

Application Number Title Priority Date Filing Date
JP61191575A Granted JPS6251043A (ja) 1978-03-16 1986-08-15 光学記録キヤリヤに情報を書込みかつ読取る装置

Country Status (11)

Country Link
US (2) US4870508A (ja)
JP (2) JPS54130103A (ja)
BE (1) BE874918A (ja)
CA (1) CA1143473A (ja)
CH (1) CH662666A5 (ja)
DE (1) DE2909770C2 (ja)
FR (1) FR2420183B1 (ja)
GB (1) GB2016747B (ja)
IT (1) IT1111723B (ja)
NL (1) NL7802860A (ja)
SE (1) SE444872B (ja)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55153139A (en) * 1979-05-14 1980-11-28 Xerox Corp Digital optical memory recording medium
JPS56117341A (en) * 1980-02-18 1981-09-14 Toshiba Corp Optical disk and its manufacture
JPS5730132A (en) * 1980-07-29 1982-02-18 Sharp Corp Magnetooptical storage device
JPS5774853A (en) * 1980-10-23 1982-05-11 Sharp Corp Magnetic optical recording device
JPS5786139A (en) * 1980-09-25 1982-05-29 Rca Corp Optical recording medium
JPS57120253A (en) * 1981-01-14 1982-07-27 Sharp Corp Magnetooptical storage elemen
JPS58105443A (ja) * 1981-09-08 1983-06-23 デイスコビジヨン・アソシエイツ ビ−ム走査装置
JPS59218645A (ja) * 1984-05-11 1984-12-08 Hitachi Ltd 光デイスク
JPS60137185A (ja) * 1983-12-26 1985-07-20 Sony Corp カメラ
JPS62270039A (ja) * 1987-04-03 1987-11-24 Toshiba Corp 光デイスクの製造方法
JPS62270042A (ja) * 1986-12-25 1987-11-24 Sharp Corp 磁気光学記憶素子
JPS62295235A (ja) * 1987-05-13 1987-12-22 Hitachi Ltd 光ディスク
JPS62295238A (ja) * 1987-05-20 1987-12-22 Sharp Corp 磁気光学記憶素子

Families Citing this family (40)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7902542A (nl) * 1979-04-02 1980-10-06 Philips Nv Optische registratie-inrichting met meerdere ablatieve registreerlagen.
US4467467A (en) * 1980-10-20 1984-08-21 Discovision Associates Video recorder-playback machine
US4383311A (en) * 1980-10-21 1983-05-10 Rca Corporation Optical recording medium and information record with indented overcoat
JPS57158047A (en) * 1981-03-24 1982-09-29 Toshiba Corp Optical information recording medium
FR2504301A1 (fr) * 1981-04-15 1982-10-22 Thomson Csf Support d'informations mobile et dispositif d'enregistrement-lecture comprenant un tel support
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
JPH0675297B2 (ja) * 1981-08-28 1994-09-21 株式会社日立製作所 光学的情報記録再生装置
US4428069A (en) * 1981-12-21 1984-01-24 Burroughs Corporation Apparatus for preformatting an optical disk
US4428075A (en) * 1981-12-21 1984-01-24 Burroughs Corporation Methods of preformatting an optical disk
US4462095A (en) * 1982-03-19 1984-07-24 Magnetic Peripherals Inc. Moving diffraction grating for an information track centering system for optical recording
EP0124580B1 (en) * 1982-11-01 1991-04-03 Storage Technology Partners Ii Fine and coarse servo system for access and tracking on an optical disk
US4562567A (en) * 1982-11-12 1985-12-31 North American Philips Corporation Apparatus for controlling the write beam in an optical data recording system
US4578788A (en) * 1983-06-02 1986-03-25 International Business Machines Corporation High performance optical storage medium with separate mechanical servo tracks embedded within the medium
US4703408A (en) * 1983-11-28 1987-10-27 Hitachi, Ltd. Apparatus and record carrier for optically writing information
US4598393A (en) * 1984-04-06 1986-07-01 Drexler Technology Corporation Three-beam optical servo tracking system with two-track parallel readout
NL8500153A (nl) * 1985-01-22 1986-08-18 Philips Nv Registratiedragerlichaam voorzien van een reliefstruktuur van optisch detekteerbare servospoorgedeelten en sektoradressen en inrichting voor het aanbrengen van deze struktuur.
JPS63306535A (ja) * 1987-06-05 1988-12-14 Sharp Corp 光学的記録再生装置
JP2643159B2 (ja) * 1987-07-31 1997-08-20 ソニー株式会社 光学的記録方法
JPH01277327A (ja) * 1988-04-28 1989-11-07 Toshiba Corp 光学式記録媒体及び光学式情報記録装置
JPH02292744A (ja) * 1989-05-02 1990-12-04 Teac Corp 光ディスク及び光ディスク装置
JPH0478034A (ja) * 1990-05-15 1992-03-12 Toshiba Corp 光情報記録媒体及び光情報記録再生装置
US5268887A (en) * 1990-05-15 1993-12-07 Kabushiki Kaisha Toshiba Optical recording medium having offset-compensating areas
US5835469A (en) * 1990-05-25 1998-11-10 Hitachi, Ltd. High-density information recording/reproducing method
JP3507956B2 (ja) * 1993-10-13 2004-03-15 株式会社日立製作所 光ディスク
US5491678A (en) * 1990-05-25 1996-02-13 Hitachi, Ltd. Method and apparatus for recording/reproducing information data in a two-dimensional format
US5461602A (en) * 1990-09-14 1995-10-24 Matsushita Electric Industrial Co., Ltd. Optical recording and reproducing method and apparatus using light beams of two different wavelenghts
JP3273444B2 (ja) * 1992-09-21 2002-04-08 株式会社ニコン 書込み可能な光ディスク
KR100317766B1 (ko) * 1994-03-25 2002-04-24 가나이 쓰도무 고밀도정보기록재생방법
AP9901660A0 (en) * 1997-02-28 1999-09-30 Burstein Lab Inc Laboratory in a disk.
US7088650B1 (en) * 1999-08-23 2006-08-08 Worthington Mark O Methods and apparatus for optical disc data acquisition using physical synchronization markers
EP1410044A2 (en) * 2000-11-08 2004-04-21 Burstein Technologies, Inc. Interactive system for analyzing biological samples and processing related information and the use thereof
WO2002046762A2 (en) * 2000-12-08 2002-06-13 Burstein Technologies, Inc. Optical disc assemblies for performing assays
US6760298B2 (en) * 2000-12-08 2004-07-06 Nagaoka & Co., Ltd. Multiple data layer optical discs for detecting analytes
US6706415B2 (en) * 2000-12-28 2004-03-16 Copeland Corporation Marine coating
DE60114884D1 (de) * 2001-01-24 2005-12-15 Philips Internat B V Positionierungssteuerung für einen lese- und/oder schreibkopf
AU2002368023A1 (en) * 2001-05-16 2004-03-04 Burstein Technologies, Inc. Variable sampling for rendering pixelization of analysis results in optical bio-disc assembly
EP1470551A2 (en) * 2002-01-28 2004-10-27 Burstein Technologies, Inc. Methods and apparatus for logical triggering
AU2003209372B2 (en) 2002-01-31 2009-02-19 Burstein Technologies, Inc. Method for triggering through disc grooves and related optical analysis discs and system
JP4162518B2 (ja) * 2003-03-17 2008-10-08 Ｔｄｋ株式会社 ホログラム記録再生方法及びホログラム記録媒体
JP3924549B2 (ja) * 2003-04-23 2007-06-06 Ｔｄｋ株式会社 ホログラム記録再生方法及び装置

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5010913A (ja) * 1973-05-25 1975-02-04

Family Cites Families (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1183948B (de) * 1961-01-12 1964-12-23 Telefunken Patent Speicher, insbesondere Mikrospeicher fuer Informationen
US3307157A (en) * 1964-01-02 1967-02-28 Xerox Corp Light scan recording and readout
US3337718A (en) * 1964-01-02 1967-08-22 Xerox Corp Light scan recording and readout
US3365706A (en) * 1964-04-15 1968-01-23 Gilbert W. King Photo-optical data storage and retrieval system employing error detection and error location identification components
US3454777A (en) * 1964-05-14 1969-07-08 Sequential Electronic Systems Measurement of object displacements and velocities
US3438050A (en) * 1965-01-06 1969-04-08 Itek Corp Laser data recorder
US3510658A (en) * 1967-11-06 1970-05-05 Ibm Light beam servoing system with memory element having wavelength-discrimi-nating guide and data tracks
FR2019358A1 (ja) * 1968-08-21 1970-07-03 Optical Devices Cy
GB1302370A (ja) * 1969-12-22 1973-01-10
US3781479A (en) * 1970-01-26 1973-12-25 Lahr J Method and apparatus for transmitting time compressed audio information
US3673412A (en) * 1970-03-02 1972-06-27 Trw Inc Radiant energy beam scanning method and apparatus
US3636526A (en) * 1970-06-08 1972-01-18 Energy Conversion Devices Inc Information-recording system employing amorphous materials
DE2048431B2 (de) * 1970-08-05 1974-01-10 Ted Bildplatten Ag Aeg-Telefunkenteldec, Zug (Schweiz) Verfahren zum Aufzeichnen von Informationen, vorzugsweise von solchen großer Bandbreite im Bereich von mehreren MHz, auf einem Träger
NL174591C (nl) * 1973-02-09 1984-07-02 Philips Nv Schijfvormig registratiedragerlichaam.
NL7301932A (ja) * 1973-02-12 1974-08-14
CA1013854A (en) * 1973-02-20 1977-07-12 John S. Winslow Videodisc mastering system
JPS5841710B2 (ja) * 1973-03-16 1983-09-13 ソニー株式会社 ジヨウホウシンゴウキロクホウホウ
US4084185A (en) * 1974-02-12 1978-04-11 U.S. Philips Corporation Record carrier on which information is stored in an optically readable structure
DE2522405C2 (de) * 1975-05-21 1982-04-15 Philips Patentverwaltung Gmbh, 2000 Hamburg Optisches Mehrkanal-Plattenspeichersystem zum Speichern von digitaler Information
DE2608715C2 (de) * 1976-03-03 1984-03-15 Philips Patentverwaltung Gmbh, 2000 Hamburg Optisches System zum Speichern und Wiedergewinnen digitaler Daten
GB1585546A (en) * 1976-04-08 1981-03-04 Victor Company Of Japan Information signal recording system
DE2615838C2 (de) * 1976-04-10 1985-02-07 Philips Patentverwaltung Gmbh, 2000 Hamburg Vorrichtung zur Positionsregelung eines Schreib-Lesekopfes für Datenträger mit einer Magnetspeicherschicht
US4176377A (en) * 1977-11-10 1979-11-27 Eastman Kodak Company Video disc configuration
NL187413C (nl) * 1978-03-16 1991-09-16 Philips Nv Registratiedragerlichaam, ingeschreven registratiedrager, werkwijze voor het inschrijven van het registratiedragerlichaam en inrichting voor het uitvoeren van de werkwijze en voor het uitlezen van een ingeschreven registratiedrager.

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5010913A (ja) * 1973-05-25 1975-02-04

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55153139A (en) * 1979-05-14 1980-11-28 Xerox Corp Digital optical memory recording medium
JPS56117341A (en) * 1980-02-18 1981-09-14 Toshiba Corp Optical disk and its manufacture
JPS5730132A (en) * 1980-07-29 1982-02-18 Sharp Corp Magnetooptical storage device
JPS5786139A (en) * 1980-09-25 1982-05-29 Rca Corp Optical recording medium
JPH0427614B2 (ja) * 1980-09-25 1992-05-12 Rca Corp
JPH0121544B2 (ja) * 1980-10-23 1989-04-21 Sharp Kk
JPS5774853A (en) * 1980-10-23 1982-05-11 Sharp Corp Magnetic optical recording device
JPS57120253A (en) * 1981-01-14 1982-07-27 Sharp Corp Magnetooptical storage elemen
JPH0444333B2 (ja) * 1981-01-14 1992-07-21 Sharp Kk
JPS58105443A (ja) * 1981-09-08 1983-06-23 デイスコビジヨン・アソシエイツ ビ−ム走査装置
JPS60137185A (ja) * 1983-12-26 1985-07-20 Sony Corp カメラ
JPS59218645A (ja) * 1984-05-11 1984-12-08 Hitachi Ltd 光デイスク
JPS62270042A (ja) * 1986-12-25 1987-11-24 Sharp Corp 磁気光学記憶素子
JPS62270039A (ja) * 1987-04-03 1987-11-24 Toshiba Corp 光デイスクの製造方法
JPS62295235A (ja) * 1987-05-13 1987-12-22 Hitachi Ltd 光ディスク
JPH0370295B2 (ja) * 1987-05-13 1991-11-07 Hitachi Ltd
JPS62295238A (ja) * 1987-05-20 1987-12-22 Sharp Corp 磁気光学記憶素子
JPH0427617B2 (ja) * 1987-05-20 1992-05-12 Sharp Kk

Also Published As

Publication number Publication date
DE2909770C2 (de) 1987-05-07
IT1111723B (it) 1986-01-13
SE7902223L (sv) 1979-09-17
IT7920945A0 (it) 1979-03-13
US4870508A (en) 1989-09-26
JPS6259373B2 (ja) 1987-12-10
DE2909770A1 (de) 1979-09-20
FR2420183A1 (fr) 1979-10-12
NL7802860A (nl) 1979-09-18
GB2016747B (en) 1982-09-08
US4972403A (en) 1990-11-20
CH662666A5 (de) 1987-10-15
FR2420183B1 (fr) 1988-04-29
JPS6251043A (ja) 1987-03-05
SE444872B (sv) 1986-05-12
JPH0381209B2 (ja) 1991-12-27
BE874918A (fr) 1979-09-17
GB2016747A (en) 1979-09-26
CA1143473A (en) 1983-03-22

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