DE3382774D1 - Gerät zum Kontrollieren des Fokuszustands eines Aufzeichnungslichtstrahls. - Google Patents
Gerät zum Kontrollieren des Fokuszustands eines Aufzeichnungslichtstrahls.Info
- Publication number
- DE3382774D1 DE3382774D1 DE3382774T DE3382774T DE3382774D1 DE 3382774 D1 DE3382774 D1 DE 3382774D1 DE 3382774 T DE3382774 T DE 3382774T DE 3382774 T DE3382774 T DE 3382774T DE 3382774 D1 DE3382774 D1 DE 3382774D1
- Authority
- DE
- Germany
- Prior art keywords
- focus
- light beam
- laser
- videodisc
- 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
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)
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 (2)
Publication Number | Publication Date |
---|---|
DE3382774D1 true DE3382774D1 (de) | 1995-02-02 |
DE3382774T2 DE3382774T2 (de) | 1995-04-27 |
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 Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE8383107696T Expired - Lifetime DE3382416D1 (de) | 1982-09-07 | 1983-08-04 | Ueberwachungsgeraet fuer einen schreibstrahlbrennpunkt. |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
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)
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)
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 |
-
1982
- 1982-09-07 US US06/415,501 patent/US4499569A/en not_active Expired - Lifetime
-
1983
- 1983-07-18 KR KR1019830003296A patent/KR870002135B1/ko not_active IP Right Cessation
- 1983-07-25 JP JP58134529A patent/JPS5945639A/ja active Granted
- 1983-08-04 DE DE8383107696T patent/DE3382416D1/de not_active Expired - Lifetime
- 1983-08-04 AT AT94108322T patent/ATE174446T1/de not_active IP Right Cessation
- 1983-08-04 SG SG1996003294A patent/SG44590A1/en unknown
- 1983-08-04 EP EP90118699A patent/EP0412581B1/de not_active Expired - Lifetime
- 1983-08-04 AT AT90118699T patent/ATE116070T1/de not_active IP Right Cessation
- 1983-08-04 DE DE3382774T patent/DE3382774T2/de not_active Expired - Lifetime
- 1983-08-04 AT AT83107696T patent/ATE67882T1/de not_active IP Right Cessation
- 1983-08-04 EP EP94108322A patent/EP0619575B1/de not_active Expired - Lifetime
- 1983-08-04 EP EP83107696A patent/EP0105130B1/de not_active Expired - Lifetime
- 1983-08-04 DE DE3382824T patent/DE3382824T2/de not_active Expired - Lifetime
-
1990
- 1990-12-28 JP JP2415356A patent/JP2580390B2/ja not_active Expired - Lifetime
-
1992
- 1992-10-14 SG SG1073/92A patent/SG107392G/en unknown
-
1993
- 1993-04-22 HK HK388/93A patent/HK38893A/xx not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
EP0105130B1 (de) | 1991-09-25 |
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 |
DE3382416D1 (de) | 1991-10-31 |
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 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition |