FR2393393A1 - Support d'enregistrement rotatif, methode et dispositif de reproduction optique de l'information enregistree - Google Patents

Support d'enregistrement rotatif, methode et dispositif de reproduction optique de l'information enregistree

Info

Publication number
FR2393393A1
FR2393393A1 FR7736192A FR7736192A FR2393393A1 FR 2393393 A1 FR2393393 A1 FR 2393393A1 FR 7736192 A FR7736192 A FR 7736192A FR 7736192 A FR7736192 A FR 7736192A FR 2393393 A1 FR2393393 A1 FR 2393393A1
Authority
FR
France
Prior art keywords
radius
length
tracks
recording media
recorded information
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
FR7736192A
Other languages
English (en)
Other versions
FR2393393B1 (fr
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.)
Sony Corp
Original Assignee
Sony 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 Sony Corp filed Critical Sony Corp
Publication of FR2393393A1 publication Critical patent/FR2393393A1/fr
Application granted granted Critical
Publication of FR2393393B1 publication Critical patent/FR2393393B1/fr
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
    • G11B7/08—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
    • G11B7/0908—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 focusing only
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
    • G11B19/20—Driving; Starting; Stopping; Control thereof
    • G11B19/24—Arrangements for providing constant relative speed between record carrier and head
    • 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
    • G11B7/1381—Non-lens elements for altering the properties of the beam, e.g. knife edges, slits, filters or stops

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Optical Head (AREA)

Abstract

Disque sur lequel une information reproductible est enregistrée sous forme de créneaux écartés sur des pistes circulaires concentriques. Les créneaux représentent par exemple des signaux modulés en fréquence et leur longueur est indépendante de la fréquence de ces signaux d'information. Un faisceau lumineux analyse les pistes 108 sur le disque. La dimension du faisceau analyseur varie en fonction du rayon de la piste analysée; elle augmente avec le rayon. Cette commande de la dimension du faisceau analyseur produit une relation constante entre la dimension du faisceau et la longueur des créneaux, bien que la longueur de ces derniers varie avec le rayon des pistes.
FR7736192A 1976-11-30 1977-11-30 Support d'enregistrement rotatif, methode et dispositif de reproduction optique de l'information enregistree Granted FR2393393A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14456376A JPS5369006A (en) 1976-11-30 1976-11-30 Reproducer of disc form signal recording media

Publications (2)

Publication Number Publication Date
FR2393393A1 true FR2393393A1 (fr) 1978-12-29
FR2393393B1 FR2393393B1 (fr) 1984-12-21

Family

ID=15365147

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7736192A Granted FR2393393A1 (fr) 1976-11-30 1977-11-30 Support d'enregistrement rotatif, methode et dispositif de reproduction optique de l'information enregistree

Country Status (7)

Country Link
US (1) US4157568A (fr)
JP (1) JPS5369006A (fr)
AT (1) AT378091B (fr)
AU (1) AU509203B2 (fr)
CA (1) CA1100233A (fr)
FR (1) FR2393393A1 (fr)
GB (1) GB1551022A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2506053A1 (fr) * 1981-05-12 1982-11-19 Victor Company Of Japan Circuit d'appareil de lecture de disques destine a la reproduction d'information pre-enregistree sous la forme de creux

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7902363A (nl) * 1979-03-27 1980-09-30 Philips Nv Registratiedrager met een optisch uitleesbare informa- tiestruktuur.
AU575453B2 (en) * 1979-09-26 1988-07-28 Discovision Associates Mastering machine
JPS626580Y2 (fr) * 1979-11-17 1987-02-16
JPS57208639A (en) * 1981-06-18 1982-12-21 Toshiba Corp Recording method of disk
US4419750A (en) * 1981-07-13 1983-12-06 Eastman Kodak Company Constant track width optical disk recording
AU567800B2 (en) * 1984-03-24 1987-12-03 Sony Corporation Optical disc player
US4686662A (en) * 1984-07-16 1987-08-11 Storage Technology Partners Ii Subaperture coarse tracking optical system for optical data storage devices
US4623784A (en) * 1984-12-20 1986-11-18 Drexler Technology Corporation Laser recording apparatus with off-center lens and error detection
JPS61174026U (fr) * 1985-04-16 1986-10-29
JP2531942B2 (ja) * 1986-04-14 1996-09-04 ティアツク株式会社 光学式デイスク記録装置
JP2810035B2 (ja) * 1986-08-22 1998-10-15 株式会社日立製作所 光学的記録再生方法
JPS63157331A (ja) * 1986-12-20 1988-06-30 Toshiba Corp 情報記憶再生装置
EP0289004B1 (fr) * 1987-04-28 1994-03-23 Sharp Kabushiki Kaisha Appareil d'enregistrement et de reproduction
US5390162A (en) * 1991-02-05 1995-02-14 Sony Corporation Method for reproducing signals recorded on optical recording medium
JPH06259799A (ja) * 1993-03-04 1994-09-16 Nikon Corp 光ディスクの再生方法及び再生装置
CN1110038C (zh) * 1995-01-31 2003-05-28 索尼公司 光记录媒体的再现设备
WO2004049319A1 (fr) * 2002-11-27 2004-06-10 Nokia Corporation Dispositif de lecture/ecriture pour memoire optique et procede approprie
US7679029B2 (en) * 2005-10-28 2010-03-16 Cymer, Inc. Systems and methods to shape laser light as a line beam for interaction with a substrate having surface variations
JP5679175B2 (ja) * 2010-03-24 2015-03-04 株式会社リコー 光走査装置及び画像形成装置

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5223902A (en) * 1975-08-18 1977-02-23 Matsushita Electric Ind Co Ltd Optical playback device

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3423524A (en) * 1965-01-05 1969-01-21 Minnesota Mining & Mfg Recording system
DE1562038B2 (de) * 1968-02-13 1971-05-13 Telefunken Patentverwertungsgesell schaft mbH, 790OUIm System zur aufzeichnung und abtastung von bildsignalen und der bildwechselfrequenz entsprechenden impulsen unter ver wendung eines plattenfoermigen aufzeichnungstraegers
NL172111C (nl) * 1973-07-02 1983-07-01 Philips Nv Registratiedrager waarop informatie is vastgelegd in een optische struktuur en inrichting voor het inschrijven van een dergelijke registratiedrager.
US4118734A (en) * 1974-02-14 1978-10-03 U.S. Philips Corporation Optical videodisc with variable width tracks
US4038679A (en) * 1974-02-14 1977-07-26 U.S. Philips Corporation Apparatus for reading an optically recorded record carrier provided with periodic surface undulations and for deriving a focussing control signal from such surface undulations
NL7402078A (nl) * 1974-02-15 1975-08-19 Philips Nv Inrichting voor het uitlezen van een schijfvormige registratiedrager.

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5223902A (en) * 1975-08-18 1977-02-23 Matsushita Electric Ind Co Ltd Optical playback device

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
ABJP/77 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2506053A1 (fr) * 1981-05-12 1982-11-19 Victor Company Of Japan Circuit d'appareil de lecture de disques destine a la reproduction d'information pre-enregistree sous la forme de creux

Also Published As

Publication number Publication date
ATA858277A (de) 1984-10-15
JPS5369006A (en) 1978-06-20
GB1551022A (en) 1979-08-22
AT378091B (de) 1985-06-10
AU3101077A (en) 1979-06-07
AU509203B2 (en) 1980-04-24
US4157568A (en) 1979-06-05
CA1100233A (fr) 1981-04-28
FR2393393B1 (fr) 1984-12-21

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