CA1077620A - Storage disk and read/write system - Google Patents

Storage disk and read/write system

Info

Publication number
CA1077620A
CA1077620A CA252,861A CA252861A CA1077620A CA 1077620 A CA1077620 A CA 1077620A CA 252861 A CA252861 A CA 252861A CA 1077620 A CA1077620 A CA 1077620A
Authority
CA
Canada
Prior art keywords
data
turn
light
guide
storage 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
CA252,861A
Other languages
English (en)
French (fr)
Inventor
Bernhard Hill
Rudiger Pepperl
Johann Kruger
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
Priority claimed from DE19752522593 external-priority patent/DE2522593C2/de
Priority claimed from DE19762608715 external-priority patent/DE2608715C2/de
Application filed by Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Application granted granted Critical
Publication of CA1077620A publication Critical patent/CA1077620A/en
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
    • G11B7/24—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
    • G11B17/00—Guiding record carriers not specifically of filamentary or web form, or of supports therefor
    • G11B17/005—Programmed access to indexed parts of tracks of operating discs, by guiding the disc
    • 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
    • G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
    • G11B27/102—Programmed access in sequence to addressed parts of tracks of operating record carriers
    • G11B27/105—Programmed access in sequence to addressed parts of tracks of operating record carriers of operating discs
    • 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
    • G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
    • G11B27/19—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier
    • G11B27/28—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording
    • G11B27/30—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording on the same track as the main recording
    • G11B27/3027—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording on the same track as the main recording used signal is digitally coded
    • 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
    • G11B2220/00—Record carriers by type
    • G11B2220/20—Disc-shaped record carriers
    • G11B2220/21—Disc-shaped record carriers characterised in that the disc is of read-only, rewritable, or recordable type
    • G11B2220/215—Recordable discs
    • G11B2220/218—Write-once discs
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/20—Disc-shaped record carriers
    • G11B2220/25—Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
    • G11B2220/2525—Magneto-optical [MO] discs

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Moving Of The Head To Find And Align With The Track (AREA)
CA252,861A 1975-05-22 1976-05-19 Storage disk and read/write system Expired CA1077620A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19752522593 DE2522593C2 (de) 1975-05-22 1975-05-22 Optisches System zum wahlfreien Speichern und Wiedergewinnen digitaler Daten
DE19762608715 DE2608715C2 (de) 1976-03-03 1976-03-03 Optisches System zum Speichern und Wiedergewinnen digitaler Daten

Publications (1)

Publication Number Publication Date
CA1077620A true CA1077620A (en) 1980-05-13

Family

ID=25768928

Family Applications (1)

Application Number Title Priority Date Filing Date
CA252,861A Expired CA1077620A (en) 1975-05-22 1976-05-19 Storage disk and read/write system

Country Status (7)

Country Link
US (1) US4094013A (OSRAM)
JP (1) JPS608530B2 (OSRAM)
CA (1) CA1077620A (OSRAM)
FR (1) FR2312087A1 (OSRAM)
GB (1) GB1551327A (OSRAM)
IT (1) IT1060627B (OSRAM)
SE (1) SE415305B (OSRAM)

Families Citing this family (96)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2337472A1 (fr) * 1975-12-29 1977-07-29 Telediffusion Fse Systeme de commande du positionnement de la tete d'un lecteur de disque et notamment de videodisque
GB1577133A (en) * 1976-03-19 1980-10-22 Rca Corp Video information record and playback apparatus
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
DE2710166C2 (de) * 1977-03-09 1984-09-13 Philips Patentverwaltung Gmbh, 2000 Hamburg Mechanisch adressierter optischer Speicher
FR2396379A1 (fr) * 1977-07-01 1979-01-26 Thomson Brandt Lecteur optique de disque d'information muni d'un dispositif d'acces automatique aux informations
US4205338A (en) * 1977-11-03 1980-05-27 Laser File Inc. Disc recording tracking system
JPS5465503A (en) * 1977-11-04 1979-05-26 Hitachi Ltd Information recorder-reproducer
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.
NL7810462A (nl) * 1978-10-19 1980-04-22 Philips Nv Registratiedrager waarin informatie is aangebracht in een optisch uitleesbare stralingsreflekterende informatiestruktuur
NL7810463A (nl) * 1978-10-19 1980-04-22 Philips Nv Registratiedrager waarin informatie is aangebracht in een optisch uitleesbare informatiestruktuur.
CA1165871A (en) * 1978-11-08 1984-04-17 Kornelis Bulthuis Optically inscribable record carrier
JPS5936347B2 (ja) * 1978-12-11 1984-09-03 日本ビクター株式会社 情報記録担体
US4290122A (en) * 1979-05-14 1981-09-15 Xerox Corporation Self-synchronizing clock source for optical memories
US4283777A (en) * 1979-05-14 1981-08-11 Xerox Corporation Optical memory having a parallel read out
US4296491A (en) * 1979-07-30 1981-10-20 Atlantic Richfield Company Information carrier having inter-track identification code information
US4412319A (en) * 1979-10-18 1983-10-25 Rca Corporation Video disc player with self calibrating stylus translator
US4330879A (en) * 1979-10-18 1982-05-18 Rca Corporation Adaptive stylus kicker using disc track and disc sector information
NL8000121A (nl) * 1980-01-09 1981-08-03 Philips Nv Schijfvormige, optische uitleesbare registratiedrager als opslagmedium voor datainformatie, inrichting voor het vervaardigen van zo'n registratiedrager, inrichting voor het optekenen van datainformatie in zo'n registratiedrager en inrichting voor het uitlezen van zo'n registratiedrager.
FR2474221A1 (fr) * 1980-01-23 1981-07-24 Thomson Csf Dispositif optique d'enregistrement-lecture de supports d'information et systeme de memoire optique comportant un tel systeme
US4408314A (en) * 1980-02-29 1983-10-04 Tokyo Shibaura Denki Kabushiki Kaisha Record/playback track tracking servo
US5084852A (en) * 1980-07-16 1992-01-28 Discovision Associates System for recording digital information in a pulse-length modulation format
US5577015A (en) * 1980-07-16 1996-11-19 Discovision Associates System for recording digital information in a pulse-length modulation
US5253244A (en) 1980-07-16 1993-10-12 Discovision Associates System for recording digital information in a pulse-length modulation format
US5003526A (en) * 1980-07-16 1991-03-26 Discovision Associates System for recording digital information in a pulse-length modulation format
US5553047A (en) * 1980-07-16 1996-09-03 Discovision Associates System for recording digital information in a pulse-length modulation format
CA1147858A (en) * 1980-07-16 1983-06-07 Discovision Associates System for recording digital information in a pulse-length modulation format
US4386375A (en) * 1980-09-24 1983-05-31 Rca Corporation Video disc player with multiple signal recovery transducers
US4692913A (en) * 1980-11-26 1987-09-08 News Log International, Inc. Method and apparatus for reading a data record carrier
JPS57103132A (en) * 1980-12-16 1982-06-26 Matsushita Electric Ind Co Ltd Recording information carrier and its recorder and reproducer
DE3172850D1 (en) * 1980-12-17 1985-12-12 Matsushita Electric Industrial Co Ltd Optical disk having an index mark
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
FR2504713B1 (fr) * 1981-04-27 1986-04-11 Thomson Csf Disque support d'information a codage angulaire et systeme d'entrainement en rotation d'un tel disque
JPS5814332A (ja) * 1981-07-16 1983-01-27 Mitsubishi Electric Corp 光学式情報再生装置
US4497050A (en) * 1981-08-03 1985-01-29 U.S. Philips Corporation Method and device for writing a data block into a record carrier body
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
US4443870A (en) * 1981-10-15 1984-04-17 Burroughs Corporation Optical memory system providing track following
US4564929A (en) * 1981-11-25 1986-01-14 Hitachi, Ltd. Information recording and reproducing apparatus with tracking control by sampling
DE3277512D1 (en) * 1981-12-01 1987-11-26 Matsushita Electric Industrial Co Ltd Optical recording and reproducing disc
JPS58100235A (ja) * 1981-12-11 1983-06-14 Victor Co Of Japan Ltd 情報記録円盤及びその文字記録方式
US4428075A (en) * 1981-12-21 1984-01-24 Burroughs Corporation Methods of preformatting an optical disk
US4475132A (en) * 1982-01-22 1984-10-02 Rodesch Dale F Interactive video disc systems
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
USRE32937E (en) * 1982-03-19 1989-05-30 Magnetic Peripherals, Inc. Modulation system for optical recording
US4456981A (en) * 1982-03-19 1984-06-26 Magnetic Peripherals Inc. Modulation system for optical recording
US4751692A (en) * 1982-04-15 1988-06-14 Discovision Associates Method and apparatus for recovering information from a videodisc
FR2528605B1 (fr) * 1982-06-15 1987-11-20 Thomson Csf Procede et dispositif optique de focalisation d'un faisceau d'energie lumineuse sur un plan de reference d'un support d'information ainsi que ce support
US4805162A (en) * 1982-11-01 1989-02-14 Storage Technology Partners Ii Fine and coarse servo system for access and tracking on an optical disk
EP0138947A1 (en) * 1983-03-07 1985-05-02 Storage Technology Partners Ii System for sensing the rotational position of a rotating disk having coarse seek tracks
JP2578738B2 (ja) * 1983-03-19 1997-02-05 ソニー株式会社 自動選曲機能付レコ−ドプレ−ヤ
WO1984004990A1 (en) * 1983-06-07 1984-12-20 Storage Technology Partners A system and method for organizing and managing data stored on an informational disk
JPH0812743B2 (ja) * 1983-06-30 1996-02-07 株式会社東芝 ディスク装置
JPH0634304B2 (ja) * 1983-09-01 1994-05-02 ソニー株式会社 デイスク再生装置
US4567532A (en) * 1983-09-16 1986-01-28 Sanders Associates, Inc. Selectable view video record/playback system
WO1985001381A1 (en) * 1983-09-19 1985-03-28 Storage Technology Partners Ii Preformatted diagnostic information recording disk
EP0156880A1 (en) * 1983-09-19 1985-10-09 Storage Technology Partners Ii Optically storing digital data
US4538069A (en) * 1983-10-28 1985-08-27 Control Data Corporation Capacitance height gage applied in reticle position detection system for electron beam lithography apparatus
US4736352A (en) * 1983-11-25 1988-04-05 Matsushita Electric Industrial Co., Ltd. Optical recording medium and apparatus for recording and reproducing data therein
US4672600A (en) * 1983-11-28 1987-06-09 Northern Telecom Limited Optical disc having protective cover
JPS60177404A (ja) * 1984-02-23 1985-09-11 Toshiba Corp デイスク装置
DE3570305D1 (en) * 1984-06-01 1989-06-22 Matsushita Electric Industrial Co Ltd Optical disk exclusively used for reproduction
US4706117A (en) * 1984-06-01 1987-11-10 Arnold Schoolman Stereo laser disc viewing system
JPH0619863B2 (ja) * 1984-06-13 1994-03-16 株式会社日立製作所 光磁気情報記憶方法及び装置
US4740941A (en) * 1984-07-06 1988-04-26 Storage Technology Partners 11 System for aligning sector marks with data in a disk storage system
US4884259A (en) * 1984-08-28 1989-11-28 Fuji Photo Film Co., Ltd. Optical memory disk and track access therefor
JPS61168131A (ja) * 1985-01-21 1986-07-29 Matsushita Electric Ind Co Ltd 光情報記録再生装置
US4813011A (en) * 1985-05-13 1989-03-14 International Business Machines Corporation Data processing peripheral subsystems having a controller and a plurality of peripheral devices
US4841502A (en) * 1985-06-14 1989-06-20 Kabushiki Kaisha Toshiba Information recording system and reproducing for recording and reproducing information on a magneto-optical disk
US4949331A (en) * 1985-06-19 1990-08-14 Hitachi, Ltd. Apparatus and record carrier for optical disc memory with correction pattern and master disc cutting apparatus
JPS62109236A (ja) * 1985-11-07 1987-05-20 Teac Co トラツキングサ−ボ装置
JPS62117168A (ja) * 1985-11-15 1987-05-28 Teac Co 情報記録円盤
JP2574752B2 (ja) * 1986-01-22 1997-01-22 株式会社日立製作所 情報記録媒体および記録再生方法
NL8600934A (nl) * 1986-04-14 1987-11-02 Optical Storage Int Optische registratiedrager en inrichting voor het uitlezen van de registratiedrager.
NL8601006A (nl) * 1986-04-21 1987-11-16 Philips Nv Werkwijze voor het aftasten van een stralingsgevoelig registratieoppervlak van een roterende schijfvormige drager met behulp van een gemoduleerde stralingsbundel, en optische schrijfinrichting voor het uitvoeren van de werkwijze.
US4957580A (en) * 1986-04-23 1990-09-18 Drexler Technology Corp. Method for making an optical data card
US4937810A (en) * 1986-04-23 1990-06-26 Drexler Technology Corporation Optical recording tape with continuous prerecorded tracks
US5034914A (en) * 1986-05-15 1991-07-23 Aquidneck Systems International, Inc. Optical disk data storage method and apparatus with buffered interface
US5247646A (en) * 1986-05-15 1993-09-21 Aquidneck Systems International, Inc. Compressed data optical disk storage system
JPS62295270A (ja) * 1986-06-13 1987-12-22 Csk Corp 光記録媒体の記録フオ−マツト
US4760565A (en) * 1986-09-15 1988-07-26 International Business Machines Corporation High speed track access for optical disks using acousto-optic deflector
US5113061A (en) * 1987-02-13 1992-05-12 Olympus Optical Co., Ltd. Optical card having an identifier for identifying track construction and apparatus for writing and/or reading data on and/or from the optical card
US5214635A (en) * 1987-02-27 1993-05-25 Matsushita Electric Industrial Co., Ltd. Erasable optical disk and optical information recording/reproduction apparatus
KR910008503B1 (ko) * 1987-03-13 1991-10-18 미쯔비시덴끼 가부시끼가이샤 광 디스크
GB8708166D0 (en) * 1987-04-06 1987-05-13 Morse Controls Remote control mechanisms
US5020040A (en) * 1987-06-24 1991-05-28 Digital Equipment Corporation Overwriting system for magneto-optical recording with self timing track
US4814903A (en) * 1987-06-29 1989-03-21 International Business Machines Corporation Alternate storage areas in magnetooptical media
GB8906353D0 (en) * 1989-03-20 1989-05-04 Dewar Productions Inc Semi-timing optic lathe
JPH0386944A (ja) 1989-05-15 1991-04-11 Seiko Epson Corp 光学式情報記録媒体
JPH03201266A (ja) * 1989-12-27 1991-09-03 Victor Co Of Japan Ltd 追記型情報記録媒体及びその記録装置
US5210660A (en) * 1990-01-17 1993-05-11 International Business Machines Corporation Sectored servo independent of data architecture
JPH04301222A (ja) * 1991-03-28 1992-10-23 Toshiba Corp ディスク再生装置
US5341356A (en) * 1991-04-02 1994-08-23 U.S. Philips Corporation Method and device for recording information volumes in a track of a record carrier, and a device for reading the record carrier
US5878019A (en) * 1991-04-02 1999-03-02 U.S. Philips Corporation Record carrier having at least two information volumes
EP0507397B1 (en) * 1991-04-02 1998-07-01 Koninklijke Philips Electronics N.V. Method and device for recording information volumes in a track of a record carrier, and a device for reading the record carrier thus obtained
JPH1196673A (ja) * 1997-09-18 1999-04-09 Fujitsu Ltd 情報記録媒体の記録再生装置及び情報記録媒体
US6801376B2 (en) * 2001-06-21 2004-10-05 Hitachi Global Storage Technologies Netherlands B.V. Method and apparatus for evaluating a head-disk interface condition for disk drives

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3185972A (en) * 1961-10-10 1965-05-25 Ibm Transducer positioning system utilizing record with interspersed data and positioning information
US3391247A (en) * 1964-01-03 1968-07-02 Minnesota Mining & Mfg Television signal recording with sampled audio recorded during horizontal intervals
US3408656A (en) * 1966-05-18 1968-10-29 Eastman Kodak Co Method and appartus for recording composite diffraction grating pattern
US3573471A (en) * 1967-01-09 1971-04-06 Harris Intertype Corp Optically encoded disk read out system employing optical fibers
US3614756A (en) * 1970-01-21 1971-10-19 Ibm Magnetic record with servo track perpendicular to information track
FR2235448B1 (OSRAM) * 1973-06-29 1976-05-07 Thomson Brandt
SE7405076L (sv) * 1974-04-16 1975-10-17 Erik Gerhard Natanel Westberg Optiskt massdataminne.
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
US3994016A (en) * 1975-03-31 1976-11-23 Honeywell Information Systems, Inc. Head positioning servo system for disk drives
US3996570A (en) * 1975-08-01 1976-12-07 Ncr Corporation Optical mass memory

Also Published As

Publication number Publication date
IT1060627B (it) 1982-08-20
SE7605648L (sv) 1976-11-23
FR2312087B1 (OSRAM) 1979-07-27
US4094013A (en) 1978-06-06
GB1551327A (en) 1979-08-30
SE415305B (sv) 1980-09-22
JPS51146803A (en) 1976-12-16
FR2312087A1 (fr) 1976-12-17
JPS608530B2 (ja) 1985-03-04

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