NL178365C - Registreerapparatuur voor optische informatie. - Google Patents

Registreerapparatuur voor optische informatie.

Info

Publication number
NL178365C
NL178365C NLAANVRAGE7903317,A NL7903317A NL178365C NL 178365 C NL178365 C NL 178365C NL 7903317 A NL7903317 A NL 7903317A NL 178365 C NL178365 C NL 178365C
Authority
NL
Netherlands
Prior art keywords
optical information
registering equipment
registering
equipment
optical
Prior art date
Application number
NLAANVRAGE7903317,A
Other languages
English (en)
Dutch (nl)
Other versions
NL7903317A (nl
NL178365B (nl
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
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Publication of NL7903317A publication Critical patent/NL7903317A/xx
Publication of NL178365B publication Critical patent/NL178365B/xx
Application granted granted Critical
Publication of NL178365C publication Critical patent/NL178365C/xx

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
    • G11B7/125—Optical beam sources therefor, e.g. laser control circuitry specially adapted for optical storage devices; Modulators, e.g. means for controlling the size or intensity of optical spots or optical traces
    • G11B7/126—Circuits, methods or arrangements for laser control or stabilisation
    • 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
    • G11B20/02—Analogue recording or reproducing
    • G11B20/06—Angle-modulation recording or reproducing
    • 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
    • G11B20/18—Error detection or correction; Testing, e.g. of drop-outs
    • 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
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S5/00—Semiconductor lasers
    • H01S5/06—Arrangements for controlling the laser output parameters, e.g. by operating on the active medium
    • H01S5/068—Stabilisation of laser output parameters
    • H01S5/0683—Stabilisation of laser output parameters by monitoring the optical output parameters
    • H01S5/06835—Stabilising during pulse modulation or generation

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Optical Head (AREA)
NLAANVRAGE7903317,A 1978-04-28 1979-04-26 Registreerapparatuur voor optische informatie. NL178365C (nl)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4983178A JPS54143109A (en) 1978-04-28 1978-04-28 Optical information device

Publications (3)

Publication Number Publication Date
NL7903317A NL7903317A (nl) 1979-10-30
NL178365B NL178365B (nl) 1985-10-01
NL178365C true NL178365C (nl) 1986-03-03

Family

ID=12842019

Family Applications (1)

Application Number Title Priority Date Filing Date
NLAANVRAGE7903317,A NL178365C (nl) 1978-04-28 1979-04-26 Registreerapparatuur voor optische informatie.

Country Status (7)

Country Link
US (1) US4283785A (xx)
JP (1) JPS54143109A (xx)
CA (1) CA1127757A (xx)
DE (1) DE2916758C2 (xx)
FR (1) FR2424603A1 (xx)
GB (1) GB2025090B (xx)
NL (1) NL178365C (xx)

Families Citing this family (53)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54133305A (en) * 1978-04-07 1979-10-17 Hitachi Ltd Information recorder
US4375067A (en) * 1979-05-08 1983-02-22 Canon Kabushiki Kaisha Semiconductor laser device having a stabilized output beam
JPS5668935A (en) * 1979-10-22 1981-06-09 Discovision Ass Device for recording dataasignal on movable optical recording medium
JPS5687239A (en) * 1979-12-18 1981-07-15 Matsushita Electric Ind Co Ltd Optical recording and reproducing device
JPS56153488A (en) * 1980-04-28 1981-11-27 Mitsubishi Electric Corp Recording device
JPS57200960A (en) * 1981-06-04 1982-12-09 Pioneer Electronic Corp Recording and reproducing method and its device
JPS57212627A (en) * 1981-06-24 1982-12-27 Tdk Corp Optical recording method
US4419750A (en) * 1981-07-13 1983-12-06 Eastman Kodak Company Constant track width optical disk recording
JPS5819744A (ja) * 1981-07-24 1983-02-04 Sony Corp 光学式記録再生装置
FR2511537B1 (fr) * 1981-08-14 1986-09-05 Thomson Csf Dispositif optique de suivi de piste a echantillonnage
JPS5894143A (ja) * 1981-12-01 1983-06-04 Matsushita Electric Ind Co Ltd 光学的記録再生装置
EP0083452B1 (en) * 1982-01-06 1987-04-01 Hitachi, Ltd. Control circuit for controlling light source in optical disc device
US4488277A (en) * 1982-02-10 1984-12-11 North American Philips Corporation Control system for an optical data recording apparatus
JPS5965946A (ja) * 1982-10-06 1984-04-14 Hitachi Ltd ビデオデイスクプレ−ヤ
US4516235A (en) * 1982-10-28 1985-05-07 Rca Corporation Dynamic record level control for optical disc recorder
US4562567A (en) * 1982-11-12 1985-12-31 North American Philips Corporation Apparatus for controlling the write beam in an optical data recording system
DE3342525A1 (de) * 1982-11-27 1984-05-30 Canon K.K., Tokio/Tokyo Geraet zur informations-aufzeichnung und/oder -wiedergabe
JPS59129854A (ja) * 1983-01-18 1984-07-26 Dainippon Screen Mfg Co Ltd 画像走査記録時における光量補正方法
JPS59177487U (ja) * 1983-05-16 1984-11-27 小柴　康平 兜の鉢
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
JPS6020326A (ja) * 1983-07-14 1985-02-01 Olympus Optical Co Ltd 光学的記録装置
US4802154A (en) * 1983-10-13 1989-01-31 Laser Magnetic Storage International Company High density codes for optical recording
US4660189A (en) * 1984-03-24 1987-04-21 Sony Corporation Optical disk player having reduced laser output during track changes
US4596993A (en) * 1984-11-29 1986-06-24 Polaroid Corporation Thermal recording system and method
US4646103A (en) * 1985-03-20 1987-02-24 Hitachi, Ltd. Optical recording method
EP0234594A3 (en) * 1986-02-28 1989-09-06 Kabushiki Kaisha Toshiba System capable of retrieving information from an optical memory
JPS62150732U (xx) * 1986-03-17 1987-09-24
US4796267A (en) * 1986-04-11 1989-01-03 Nakamichi Corporation Laser control circuit
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
US4718054A (en) * 1986-05-28 1988-01-05 Laser Magnetic Storage International Company Servo error write blanking circuit for an optical recording disk
DE3732874A1 (de) * 1987-09-30 1989-04-20 Thomson Brandt Gmbh Optische abtastvorrichtung
JP2561668B2 (ja) * 1987-06-22 1996-12-11 株式会社日立製作所 ２レ−ザ光ヘッド
FI77736C (fi) * 1987-06-25 1989-04-10 Valtion Teknillinen Foerfarande foer reglering av straolkaella och reglerbar straolkaella.
US4908815A (en) * 1988-02-22 1990-03-13 Gregg David P Optical recording system utilizing proportional real-time feedback control of recording beam intensity
JP2675057B2 (ja) * 1988-04-08 1997-11-12 株式会社日立製作所 情報印刷装置
US4914459A (en) * 1988-04-18 1990-04-03 Ricoh Company, Ltd. Image forming apparatus
JP3004991B2 (ja) * 1988-04-18 2000-01-31 キヤノン株式会社 画像処理装置
JPH0267903A (ja) * 1988-09-02 1990-03-07 Canon Inc 光量調節装置
JPH02122435A (ja) * 1988-10-31 1990-05-10 Nec Corp 光記録再生装置
US5126994A (en) * 1988-11-29 1992-06-30 Sony Corporation Method and apparatus for controlling and detecting recording laser beam
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
JP2867591B2 (ja) * 1990-04-26 1999-03-08 ソニー株式会社 記録レーザビームの制御方法
BE1007029A3 (nl) * 1993-04-22 1995-02-21 Koninkl Philips Electronics Nv Werkwijze voor het afleiden van een kwaliteitssignaal uit een uitgelezen signaal, alsmede een optekeninrichting en een uitleesinrichting waarin een dergelijke werkwijze wordt toegepast.
US5495466A (en) * 1994-01-10 1996-02-27 Eastman Kodak Company Write verification in an optical recording system by sensing mark formation while writing
JP3441212B2 (ja) * 1995-01-19 2003-08-25 株式会社リコー パワー制御方式
JP3124721B2 (ja) * 1995-09-11 2001-01-15 株式会社リコー 光学的情報記録再生方法及び光学的情報記録再生装置
DE19612795A1 (de) * 1996-03-30 1996-11-21 Braun Uwe Peter Dipl Ing Fh Leuchtdichteregler
JP3784485B2 (ja) * 1997-02-12 2006-06-14 富士通株式会社 出力パルス幅制御システム
JP2002100044A (ja) * 2000-09-25 2002-04-05 Sony Corp 光記録装置およびそれにおけるレーザパワー制御方法
US6664526B2 (en) 2000-11-15 2003-12-16 Ricoh Company, Ltd. Optical information recording employing improved recording power control scheme
US7167432B2 (en) * 2002-03-26 2007-01-23 Zoran Corporation Read and write sample and hold signal generation
US7342867B2 (en) * 2002-12-03 2008-03-11 Matsushita Electric Industrial Co., Ltd. Optical head device, optical recording device, and optical recording method

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3654624A (en) * 1969-03-17 1972-04-04 Precision Instr Co Laser recording system using drum mounted record strips
US3778791A (en) * 1971-10-06 1973-12-11 Nasa Thermomagnetic recording and magneto-optic playback system having constant intensity laser beam control
FR2304981A1 (fr) * 1975-03-21 1976-10-15 Thomson Brandt Dispositif d'enregistrement optique d'informations
JPS5263793A (en) * 1975-11-21 1977-05-26 Pioneer Electronic Corp Optical signal reader
JPS586212B2 (ja) * 1976-05-06 1983-02-03 ティアック株式会社 光学的記録再生装置
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

Also Published As

Publication number Publication date
DE2916758A1 (de) 1979-10-31
NL7903317A (nl) 1979-10-30
GB2025090B (en) 1982-08-18
US4283785A (en) 1981-08-11
FR2424603A1 (fr) 1979-11-23
JPS5760696B2 (xx) 1982-12-21
JPS54143109A (en) 1979-11-08
NL178365B (nl) 1985-10-01
CA1127757A (en) 1982-07-13
FR2424603B1 (xx) 1984-10-19
GB2025090A (en) 1980-01-16
DE2916758C2 (de) 1983-06-16

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Legal Events

Date Code Title Description
A1A A request for search or an international-type search has been filed
BB A search report has been drawn up
BC A request for examination has been filed
A85 Still pending on 85-01-01
V4 Discontinued because of reaching the maximum lifetime of a patent

Free format text: 19990426