JPH0255849B2 - - Google Patents

Info

Publication number
JPH0255849B2
JPH0255849B2 JP55135371A JP13537180A JPH0255849B2 JP H0255849 B2 JPH0255849 B2 JP H0255849B2 JP 55135371 A JP55135371 A JP 55135371A JP 13537180 A JP13537180 A JP 13537180A JP H0255849 B2 JPH0255849 B2 JP H0255849B2
Authority
JP
Japan
Prior art keywords
signal
modulated
intensity
writing
duty cycle
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
JP55135371A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5668935A (en
Inventor
Eru Uirukinson Richaado
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.)
Discovision Associates
Original Assignee
Discovision Associates
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 Discovision Associates filed Critical Discovision Associates
Publication of JPS5668935A publication Critical patent/JPS5668935A/ja
Publication of JPH0255849B2 publication Critical patent/JPH0255849B2/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
    • G11B7/12—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
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/36—Monitoring, i.e. supervising the progress of recording or 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
    • G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
    • G11B7/0045—Recording

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Recording Or Reproduction (AREA)
JP13537180A 1979-10-22 1980-09-30 Device for recording dataasignal on movable optical recording medium Granted JPS5668935A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US8677579A 1979-10-22 1979-10-22

Publications (2)

Publication Number Publication Date
JPS5668935A JPS5668935A (en) 1981-06-09
JPH0255849B2 true JPH0255849B2 (en]) 1990-11-28

Family

ID=22200824

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13537180A Granted JPS5668935A (en) 1979-10-22 1980-09-30 Device for recording dataasignal on movable optical recording medium

Country Status (2)

Country Link
EP (1) EP0028111A1 (en])
JP (1) JPS5668935A (en])

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0048041A3 (en) * 1978-03-27 1982-08-04 Discovision Associates Method and apparatus for writing a signal-information track by using a radiation beam
JPS56153488A (en) * 1980-04-28 1981-11-27 Mitsubishi Electric Corp Recording device
JPS5862630A (ja) * 1981-10-08 1983-04-14 Sony Corp 光変調装置
JPS5894143A (ja) * 1981-12-01 1983-06-04 Matsushita Electric Ind Co Ltd 光学的記録再生装置
US4488277A (en) * 1982-02-10 1984-12-11 North American Philips Corporation Control system for an optical data recording apparatus
US4499569A (en) * 1982-09-07 1985-02-12 Discovision Associates Writing beam focus monitor
US4538257A (en) * 1982-12-23 1985-08-27 Xerox Corporation Adaptively stabilized recording for direct read after write optical memories
FR2546325B1 (fr) * 1983-05-20 1988-07-08 Thomson Csf Procede et dispositif de calibration de la puissance optique appliquee a un disque optique pour l'enregistrement de donnees
US4616356A (en) * 1984-03-06 1986-10-07 Optical Disc Corporation Aperture compensation signal processor for optical recording
JPS62124633A (ja) * 1985-11-25 1987-06-05 Sharp Corp 光デイスク装置
NL8901588A (nl) * 1989-06-23 1991-01-16 Philips Nv Inrichting voor het optekenen van informatie op een registratiedrager met een stralingsgevoelige laag.
EP0453161A3 (en) * 1990-04-10 1992-07-08 Seiko Epson Corporation Optical recording apparatus
US5493549A (en) * 1990-04-10 1996-02-20 Seiko Epson Corporation Optical recording regeneration apparatus with compensation circuit

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3778791A (en) * 1971-10-06 1973-12-11 Nasa Thermomagnetic recording and magneto-optic playback system having constant intensity laser beam control
GB1462792A (en) * 1973-02-20 1977-01-26 Mca Disco Vision Apparatus for reading video information
CA1013854A (en) * 1973-02-20 1977-07-12 John S. Winslow Videodisc mastering system
US4225873A (en) * 1978-03-27 1980-09-30 Mca Disco-Vision, Inc. Recording and playback system
DE2521695C3 (de) * 1974-05-15 1978-10-12 Canon K.K., Tokio Signalaufzeichnungsvorrichtung
JPS539101A (en) * 1976-07-12 1978-01-27 Mitsubishi Electric Corp Recording device
JPS5845005B2 (ja) * 1976-09-14 1983-10-06 日本ビクター株式会社 光変調の変調度安定化装置
EP0048041A3 (en) * 1978-03-27 1982-08-04 Discovision Associates Method and apparatus for writing a signal-information track by using a radiation beam
DK69079A (da) * 1978-03-27 1979-09-28 Mca Disco Vision Fremgangsmaade og apparat til lagring af vidioinformation paa et informationslagerorgan
JPS54143109A (en) * 1978-04-28 1979-11-08 Hitachi Ltd Optical information device

Also Published As

Publication number Publication date
JPS5668935A (en) 1981-06-09
EP0028111A1 (en) 1981-05-06

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