DE3382416D1 - Ueberwachungsgeraet fuer einen schreibstrahlbrennpunkt. - Google Patents

Ueberwachungsgeraet fuer einen schreibstrahlbrennpunkt.

Info

Publication number
DE3382416D1
DE3382416D1 DE8383107696T DE3382416T DE3382416D1 DE 3382416 D1 DE3382416 D1 DE 3382416D1 DE 8383107696 T DE8383107696 T DE 8383107696T DE 3382416 T DE3382416 T DE 3382416T DE 3382416 D1 DE3382416 D1 DE 3382416D1
Authority
DE
Germany
Prior art keywords
focus
laser
videodisc
light beam
writing
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
DE8383107696T
Other languages
English (en)
Inventor
De Romana Eduardo Agusti Lopez
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
Application granted granted Critical
Publication of DE3382416D1 publication Critical patent/DE3382416D1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • 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
    • G11B7/085—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam into, or out of, its operative position or across tracks, otherwise than during the transducing operation, e.g. for adjustment or preliminary positioning or track change or selection
    • 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
    • G11B7/0917—Focus-error methods other than those covered by G11B7/0909 - G11B7/0916

Landscapes

  • Optical Recording Or Reproduction (AREA)
  • Optical Head (AREA)
  • Eye Examination Apparatus (AREA)
  • Manufacturing Optical Record Carriers (AREA)
  • Automatic Focus Adjustment (AREA)
  • Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
  • Holo Graphy (AREA)
  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
  • Focusing (AREA)
DE8383107696T 1982-09-07 1983-08-04 Ueberwachungsgeraet fuer einen schreibstrahlbrennpunkt. Expired - Lifetime DE3382416D1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/415,501 US4499569A (en) 1982-09-07 1982-09-07 Writing beam focus monitor

Publications (1)

Publication Number Publication Date
DE3382416D1 true DE3382416D1 (de) 1991-10-31

Family

ID=23645934

Family Applications (3)

Application Number Title Priority Date Filing Date
DE8383107696T Expired - Lifetime DE3382416D1 (de) 1982-09-07 1983-08-04 Ueberwachungsgeraet fuer einen schreibstrahlbrennpunkt.
DE3382774T Expired - Lifetime DE3382774T2 (de) 1982-09-07 1983-08-04 Gerät zum Kontrollieren des Fokuszustands eines Aufzeichnungslichtstrahls.
DE3382824T Expired - Lifetime DE3382824T2 (de) 1982-09-07 1983-08-04 Überwachungsgerät für einen Schreibstrahlbrennpunkt

Family Applications After (2)

Application Number Title Priority Date Filing Date
DE3382774T Expired - Lifetime DE3382774T2 (de) 1982-09-07 1983-08-04 Gerät zum Kontrollieren des Fokuszustands eines Aufzeichnungslichtstrahls.
DE3382824T Expired - Lifetime DE3382824T2 (de) 1982-09-07 1983-08-04 Überwachungsgerät für einen Schreibstrahlbrennpunkt

Country Status (8)

Country Link
US (1) US4499569A (de)
EP (3) EP0412581B1 (de)
JP (2) JPS5945639A (de)
KR (1) KR870002135B1 (de)
AT (3) ATE174446T1 (de)
DE (3) DE3382416D1 (de)
HK (1) HK38893A (de)
SG (2) SG44590A1 (de)

Families Citing this family (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4868805A (en) * 1986-08-13 1989-09-19 Seiko Seiki Kabushiki Kaisha Inspection apparatus
FR2611694B1 (fr) * 1987-02-23 1989-05-19 Pechiney Electrometallurgie Procede de preparation de trichites en carbure de silicium
US6141300A (en) * 1989-06-20 2000-10-31 Discovision Associates Optical actuator including lens assembly with optical axis having symmetric suspensory forces acting thereon and optical disc system including same
US5265079A (en) 1991-02-15 1993-11-23 Applied Magnetics Corporation Seek actuator for optical recording
US6069857A (en) * 1991-02-15 2000-05-30 Discovision Associates Optical disc system having improved circuitry for performing blank sector check on readable disc
US5677899A (en) * 1991-02-15 1997-10-14 Discovision Associates Method for moving carriage assembly from initial position to target position relative to storage medium
US5729511A (en) * 1991-02-15 1998-03-17 Discovision Associates Optical disc system having servo motor and servo error detection assembly operated relative to monitored quad sum signal
US6236625B1 (en) 1991-02-15 2001-05-22 Discovision Associates Optical disc system having current monitoring circuit with controller for laser driver and method for operating same
US5808980A (en) * 1991-02-15 1998-09-15 Discovision Associates Seek actuator for optical recording
US5537379A (en) * 1991-05-10 1996-07-16 Discovision Associates Optical data storage and retrieval system and method
US5894468A (en) * 1994-05-06 1999-04-13 Discovision Associates Data recovery with differentiation and partial integration stages to eliminate noises and DC offset level
US5790495A (en) 1994-05-06 1998-08-04 Discovision Associates Data generator assembly for retrieving stored data by comparing threshold signal with preprocessed signal having DC component
US5920539A (en) * 1995-01-25 1999-07-06 Discovision Associates Apparatus and method for suppression of electromagnetic emissions having a groove on an external surface for passing an electrical conductor
US6091684A (en) * 1995-01-25 2000-07-18 Discovision Associates Optical disc system and method for changing the rotational rate of an information storage medium
US5748578A (en) * 1995-01-25 1998-05-05 Discovision Associates Colpitts type oscillator having reduced ringing and improved optical disc system utilizing same
US6434087B1 (en) 1995-01-25 2002-08-13 Discovision Associates Optical disc system and method for controlling bias coil and light source to process information on a storage medium
US5742730A (en) * 1995-03-09 1998-04-21 Couts; David A. Tape control system
US5978329A (en) * 1995-06-07 1999-11-02 Discovision Associates Technique for closed loop servo operation in optical disc tracking control
US5719764A (en) * 1995-07-19 1998-02-17 Honeywell Inc. Fault tolerant inertial reference system
CN1077715C (zh) * 1995-12-06 2002-01-09 迪维安公司 聚焦控制的装置和方法
US5689485A (en) * 1996-04-01 1997-11-18 Discovision Associates Tracking control apparatus and method
US6243407B1 (en) * 1997-03-21 2001-06-05 Novalux, Inc. High power laser devices
US6668118B2 (en) * 2002-02-01 2003-12-23 Chiaro Networks Ltd. Cylindrical lens alignment method
US7755503B2 (en) * 2004-06-16 2010-07-13 Dell Products L.P. System and method for error messaging of an incorrect information handling system graphics cable connection
TWI481812B (zh) * 2013-05-03 2015-04-21 Compal Electronics Inc 光學量測裝置
JP6118994B2 (ja) * 2015-06-23 2017-04-26 パナソニックＩｐマネジメント株式会社 露光方法および露光装置

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL178915C (nl) * 1976-01-16 1986-06-02 Philips Nv Automatisch optisch focusseersysteem.
JPS52119304A (en) * 1976-03-31 1977-10-06 Canon Inc Optical device
EP0044122A3 (en) * 1978-03-27 1982-08-04 Discovision Associates Method and apparatus for writing a signal information track on a disc
JPS54133305A (en) * 1978-04-07 1979-10-17 Hitachi Ltd Information recorder
NL7907216A (nl) * 1979-09-28 1981-03-31 Philips Nv Optisch fokusfout-detektiestelsel.
JPS5668935A (en) * 1979-10-22 1981-06-09 Discovision Ass Device for recording dataasignal on movable optical recording medium
JPS56114134A (en) * 1980-02-12 1981-09-08 Pioneer Electronic Corp Monitor device for operation state of optical information reader
JPS59125727U (ja) * 1983-02-15 1984-08-24 パイオニア株式会社 光学式情報ピツクアツプ装置

Also Published As

Publication number Publication date
EP0105130B1 (de) 1991-09-25
DE3382774D1 (de) 1995-02-02
JPH05225584A (ja) 1993-09-03
KR840005876A (ko) 1984-11-19
EP0105130A3 (en) 1987-07-15
EP0619575B1 (de) 1998-12-09
EP0619575A1 (de) 1994-10-12
JPH0344383B2 (de) 1991-07-05
EP0412581A2 (de) 1991-02-13
HK38893A (en) 1993-04-30
US4499569A (en) 1985-02-12
ATE67882T1 (de) 1991-10-15
EP0105130A2 (de) 1984-04-11
DE3382774T2 (de) 1995-04-27
DE3382824T2 (de) 1999-04-29
ATE116070T1 (de) 1995-01-15
JPS5945639A (ja) 1984-03-14
DE3382824D1 (de) 1999-01-21
EP0412581A3 (en) 1991-08-28
JP2580390B2 (ja) 1997-02-12
SG107392G (en) 1992-12-24
EP0412581B1 (de) 1994-12-21
ATE174446T1 (de) 1998-12-15
SG44590A1 (en) 1997-12-19
KR870002135B1 (ko) 1987-12-09

Similar Documents

Publication Publication Date Title
DE3382416D1 (de) Ueberwachungsgeraet fuer einen schreibstrahlbrennpunkt.
GB1468253A (en) Apparatus for optically recording and/or reproducing information signals
US4689781A (en) Optical system for tracing information recording medium with multiple beams
EP0731454A4 (de) Optisches aufzeichnungsverfahren, optisches aufzeichnungsgerät und optisches aufzeichnungsmedium
JPS6455746A (en) Optical pickup device
JPS61216128A (ja) 光デイスク装置
JP2529376B2 (ja) 光ディスク原盤の作成装置
Reno Optical disk recording techniques for data rates beyond 100 Mbps
US5109376A (en) Optical axis monitoring device
JPS6417228A (en) Recording/reproducing device for optical recording medium
KR100252944B1 (ko) 광픽업장치
JPS6413246A (en) Optical head for magneto-optical storage
SU1501149A1 (ru) Устройство дл записи и воспроизведени информации с дискового оптического носител
JPS606017B2 (ja) 光学的記録再生装置
JPS57100636A (en) Optical information reader
JPS61139937A (ja) 焦点検出装置
JPH0636337A (ja) ２ビーム光ヘッド
JPS55153136A (en) Optical reproducing device
JPH02236828A (ja) 光ディスク装置
JPS60143449A (ja) 光デイスク装置における焦点検出装置
JPH045968B2 (de)
JPS5992447A (ja) ダブルビ−ム・光学ヘツド
KR970050328A (ko) 듀얼 포커스 광 픽-업장치
JPS59195345A (ja) 光学ヘツド
JPS62219239A (ja) 光ヘツド

Legal Events

Date Code Title Description
8320 Willingness to grant licences declared (paragraph 23)
8364 No opposition during term of opposition