DE3783093D1 - Verfahren zum detektieren von defekten plattenfoermiger aufzeichnungsmedien. - Google Patents
Verfahren zum detektieren von defekten plattenfoermiger aufzeichnungsmedien.Info
- Publication number
- DE3783093D1 DE3783093D1 DE8787901117T DE3783093T DE3783093D1 DE 3783093 D1 DE3783093 D1 DE 3783093D1 DE 8787901117 T DE8787901117 T DE 8787901117T DE 3783093 T DE3783093 T DE 3783093T DE 3783093 D1 DE3783093 D1 DE 3783093D1
- Authority
- DE
- Germany
- Prior art keywords
- recording media
- shaped recording
- detecting defective
- defective disk
- disk
- 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
- 230000002950 deficient Effects 0.000 title 1
Classifications
-
- 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
- G11B21/00—Head arrangements not specific to the method of recording or reproducing
- G11B21/02—Driving or moving of heads
- G11B21/10—Track finding or aligning by moving the head ; Provisions for maintaining alignment of the head relative to the track during transducing operation, i.e. track following
-
- 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
- G11B7/002—Recording, reproducing or erasing systems characterised by the shape or form of the carrier
- G11B7/0037—Recording, reproducing or erasing systems characterised by the shape or form of the carrier with discs
- G11B7/00375—Recording, reproducing or erasing systems characterised by the shape or form of the carrier with discs arrangements for detection of physical defects, e.g. of recording layer
-
- 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
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP61022521A JPS62180568A (ja) | 1986-02-04 | 1986-02-04 | デイスク状記録媒体の欠陥検出装置 |
PCT/JP1987/000068 WO1987004847A1 (en) | 1986-02-04 | 1987-02-03 | Device for detecting defect of disc-like recording media |
Publications (2)
Publication Number | Publication Date |
---|---|
DE3783093D1 true DE3783093D1 (de) | 1993-01-28 |
DE3783093T2 DE3783093T2 (de) | 1993-04-22 |
Family
ID=12085077
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE8787901117T Expired - Lifetime DE3783093T2 (de) | 1986-02-04 | 1987-02-03 | Verfahren zum detektieren von defekten plattenfoermiger aufzeichnungsmedien. |
Country Status (6)
Country | Link |
---|---|
US (1) | US4817077A (de) |
EP (1) | EP0254748B1 (de) |
JP (1) | JPS62180568A (de) |
KR (1) | KR920000399B1 (de) |
DE (1) | DE3783093T2 (de) |
WO (1) | WO1987004847A1 (de) |
Families Citing this family (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS641125A (en) * | 1987-06-23 | 1989-01-05 | Csk Corp | Error signal generating circuit |
JP2635608B2 (ja) * | 1987-08-29 | 1997-07-30 | 株式会社東芝 | 光学的情報記憶媒体検査装置 |
US5138596A (en) * | 1988-07-11 | 1992-08-11 | Canon Kabushiki Kaisha | Optical information recording apparatus including means for delaying servo gain by a predetermined time |
JP2572842B2 (ja) * | 1989-05-10 | 1997-01-16 | パイオニア株式会社 | 光学的読取り信号のクロストーク量検出装置 |
KR920001998B1 (en) * | 1989-06-03 | 1992-03-09 | Samsung Electronic | E.f.m. signal recording and playing back circuit of optical recording and playing back device |
US5065389A (en) * | 1989-08-24 | 1991-11-12 | U.S. Philips Corporation | Information recording and read device, information recording device, and record carrier obtained by means of one of the device |
DE4103974A1 (de) * | 1991-02-09 | 1992-08-13 | Thomson Brandt Gmbh | Optisches aufzeichnungs- und/oder wiedergabegeraet |
JP2693281B2 (ja) * | 1991-03-19 | 1997-12-24 | 富士通株式会社 | 光ディスク装置のシーク制御方法及びその回路 |
US5455935A (en) * | 1991-05-31 | 1995-10-03 | Tandem Computers Incorporated | Clock synchronization system |
JP3451834B2 (ja) * | 1996-04-23 | 2003-09-29 | ソニー株式会社 | 欠陥検出回路及び再生装置 |
KR970071525A (ko) * | 1996-04-30 | 1997-11-07 | 배순훈 | 디지탈 포커스 제어 장치 및 방법 |
JP3861269B2 (ja) * | 1996-07-16 | 2006-12-20 | ソニー株式会社 | 光ディスク装置、光ディスクの記録方法、光ディスク及び光ディスクの製造方法 |
US6088323A (en) * | 1996-07-16 | 2000-07-11 | Sony Corporation | Optical disk, optical disk device, and optical disk recording method |
FR2773604B1 (fr) * | 1998-01-09 | 2000-03-31 | Valeo Vision | Projecteur du genre elliptique pour vehicule automobile |
JP3808683B2 (ja) * | 2000-03-01 | 2006-08-16 | 三菱電機株式会社 | 光ディスク装置 |
JP3967870B2 (ja) * | 2000-06-23 | 2007-08-29 | パイオニア株式会社 | 光ディスク駆動装置におけるサーボ制御装置 |
JP2005204068A (ja) * | 2004-01-15 | 2005-07-28 | Toshiba Corp | 半導体装置 |
JP2006147016A (ja) * | 2004-11-18 | 2006-06-08 | Matsushita Electric Ind Co Ltd | ディフェクト検出回路 |
KR20160136609A (ko) * | 2015-05-20 | 2016-11-30 | 현대자동차주식회사 | 프로그레시브 성형장치 및 그 성형방법 |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2299697A1 (fr) * | 1974-07-23 | 1976-08-27 | Thomson Brandt | Procédé de détection d'altération de signaux de lecture, et appareil mettant oeuvre un tel procédé |
FR2426940A1 (fr) * | 1978-05-26 | 1979-12-21 | Cii Honeywell Bull | Procede de controle de zones de reference d'un support d'informations et dispositif pour le mettre en oeuvre |
JPS5774837A (en) * | 1980-10-25 | 1982-05-11 | Olympus Optical Co Ltd | Signal detection system of optical information reproducing device |
NL8006165A (nl) * | 1980-11-12 | 1982-06-01 | Philips Nv | Systeem voor het overdragen van digitale informatie, codeerinrichting voor toepassing in dat systeem, decodeerinrichting voor toepassing in dat systeem en registratiedrager voor toepassing in dat systeem. |
JPS58188340A (ja) * | 1982-04-28 | 1983-11-02 | Sony Corp | 光学式再生装置 |
JPS58215736A (ja) * | 1982-06-07 | 1983-12-15 | Pioneer Electronic Corp | 光学式記録情報読取装置におけるサ−ボ装置 |
JPS5911543A (ja) * | 1982-07-10 | 1984-01-21 | Sony Corp | 光学式デイスク再生装置 |
DE3340712A1 (de) * | 1982-11-11 | 1984-05-17 | Sony Corp., Tokio/Tokyo | Spurhalteschaltung fuer optische wiedergabegeraete |
JPS59165212A (ja) * | 1983-03-08 | 1984-09-18 | Sony Corp | 情報信号再生装置 |
JP2548106B2 (ja) * | 1984-05-23 | 1996-10-30 | ソニー株式会社 | 光学式デイスクプレ−ヤのトラツキング・サ−ボコントロ−ル装置 |
JPS61117737A (ja) * | 1984-11-13 | 1986-06-05 | Pioneer Electronic Corp | フオ−カスサ−ボ装置 |
EP0191467B1 (de) * | 1985-02-15 | 1991-03-27 | Hitachi, Ltd. | Optisches Plattengerät |
US4748609A (en) * | 1985-03-29 | 1988-05-31 | Hitachi, Ltd. | Method and apparatus for composite tracking servo system with track offset correction and rotary optical disc having at least one correction mark for correcting track offset |
JPS6278732A (ja) * | 1985-10-01 | 1987-04-11 | Olympus Optical Co Ltd | 光学的情報記録再生装置 |
-
1986
- 1986-02-04 JP JP61022521A patent/JPS62180568A/ja active Pending
-
1987
- 1987-02-03 WO PCT/JP1987/000068 patent/WO1987004847A1/ja active IP Right Grant
- 1987-02-03 DE DE8787901117T patent/DE3783093T2/de not_active Expired - Lifetime
- 1987-02-03 EP EP87901117A patent/EP0254748B1/de not_active Expired - Lifetime
- 1987-02-03 US US07/123,112 patent/US4817077A/en not_active Expired - Lifetime
- 1987-02-03 KR KR1019870700998A patent/KR920000399B1/ko not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
EP0254748A4 (en) | 1991-03-20 |
EP0254748A1 (de) | 1988-02-03 |
WO1987004847A1 (en) | 1987-08-13 |
KR880701004A (ko) | 1988-04-13 |
EP0254748B1 (de) | 1992-12-16 |
US4817077A (en) | 1989-03-28 |
DE3783093T2 (de) | 1993-04-22 |
JPS62180568A (ja) | 1987-08-07 |
KR920000399B1 (ko) | 1992-01-13 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition |