DE69628133D1 - Fokussierungssteuersystem - Google Patents
FokussierungssteuersystemInfo
- Publication number
- DE69628133D1 DE69628133D1 DE69628133T DE69628133T DE69628133D1 DE 69628133 D1 DE69628133 D1 DE 69628133D1 DE 69628133 T DE69628133 T DE 69628133T DE 69628133 T DE69628133 T DE 69628133T DE 69628133 D1 DE69628133 D1 DE 69628133D1
- Authority
- DE
- Germany
- Prior art keywords
- control system
- focus control
- focus
- control
- 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 - Fee Related
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
- G11B7/0945—Methods for initialising servos, start-up sequences
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9502922 | 1995-03-14 | ||
FR9502922A FR2731808B1 (fr) | 1995-03-14 | 1995-03-14 | Systeme de reglage de focalisation optique |
PCT/FR1996/000372 WO1996028815A1 (fr) | 1995-03-14 | 1996-03-08 | Systeme de reglage de focalisation optique |
Publications (2)
Publication Number | Publication Date |
---|---|
DE69628133D1 true DE69628133D1 (de) | 2003-06-18 |
DE69628133T2 DE69628133T2 (de) | 2004-03-18 |
Family
ID=9476998
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69628133T Expired - Fee Related DE69628133T2 (de) | 1995-03-14 | 1996-03-08 | Fokussierungssteuersystem |
Country Status (8)
Country | Link |
---|---|
US (1) | US5864526A (de) |
EP (1) | EP0789907B1 (de) |
JP (1) | JPH10500524A (de) |
KR (1) | KR100432207B1 (de) |
CN (1) | CN1096061C (de) |
DE (1) | DE69628133T2 (de) |
FR (1) | FR2731808B1 (de) |
WO (1) | WO1996028815A1 (de) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3397280B2 (ja) * | 1995-11-21 | 2003-04-14 | ソニー株式会社 | 記録媒体記録再生装置および記録媒体記録再生方法 |
FR2787232B1 (fr) | 1998-12-15 | 2001-02-23 | Thomson Csf | Disque d'enregistrement optique anti-piratage et procede de lecture d'un tel disque |
EP1017044A1 (de) * | 1998-12-29 | 2000-07-05 | STMicroelectronics S.r.l. | Steuerungsvorrichtung für das Fokussierungssystem eines CD-Abspielgeräts mit Fuzzy-Logik |
FR2805071B1 (fr) | 2000-02-11 | 2002-05-03 | Moulage Plastique De L Ouest | Disque optique protege contre la copie et procede de protection pour un tel disque |
JP4219895B2 (ja) * | 2002-08-14 | 2009-02-04 | 富士通株式会社 | 光学的記憶装置、光学装置及びそのサーボ制御方法 |
CN100464370C (zh) * | 2003-05-16 | 2009-02-25 | 皇家飞利浦电子股份有限公司 | 扩展的聚焦控制 |
US7768878B2 (en) * | 2005-07-12 | 2010-08-03 | Hewlett-Packard Development Company, L.P. | Actuator calibration using a focus error signal |
DE102006040780A1 (de) * | 2006-08-31 | 2008-03-06 | Giesecke & Devrient Gmbh | Vorrichtung zur Bearbeitung von Banknoten |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2271590B1 (de) * | 1974-01-15 | 1978-12-01 | Thomson Brandt | |
FR2271617B1 (de) * | 1974-05-15 | 1976-10-15 | Thomson Brandt | |
FR2275841A1 (fr) * | 1974-06-21 | 1976-01-16 | Thomson Brandt | Support d'information lisible optiquement par transmission et procede de fabrication dudit support |
FR2358797A1 (fr) * | 1976-07-16 | 1978-02-10 | Thomson Brandt | Systeme de correction automatique du facteur de forme de l'onde porteuse issue de la lecture d'un support d'information |
FR2474221A1 (fr) * | 1980-01-23 | 1981-07-24 | Thomson Csf | Dispositif optique d'enregistrement-lecture de supports d'information et systeme de memoire optique comportant un tel systeme |
FR2523349A1 (fr) * | 1982-03-12 | 1983-09-16 | Thomson Csf | Procede et dispositif optique de generation de signaux d'asservissements de la position d'une tache d'exploration des pistes d'un support d'information |
FR2523347B1 (fr) * | 1982-03-12 | 1988-11-04 | Thomson Csf | Support d'information mobile pregrave et dispositif optique de suivi de piste mettant en oeuvre un tel support |
JPS60185230A (ja) * | 1984-03-02 | 1985-09-20 | Pioneer Electronic Corp | 焦点誤差検出装置 |
JPS6142763A (ja) * | 1984-08-02 | 1986-03-01 | Matsushita Electric Ind Co Ltd | キヤプスタン |
JPS6142743A (ja) * | 1984-08-02 | 1986-03-01 | Seiko Instr & Electronics Ltd | 光学的情報読取装置 |
US4740679A (en) * | 1985-02-27 | 1988-04-26 | Olympus Optical Co., Ltd. | Disc focus servo-circuit with ordered reference level setting means |
DK161170C (da) * | 1986-05-02 | 1991-12-30 | Eskofot As | Apparat til opnaaelse af en oensket lysfordeling, fortrinsvis en i hovedsagen ensartet lysfordeling i billedplanet af et reproduktionskamera |
JP2735220B2 (ja) * | 1987-12-02 | 1998-04-02 | 株式会社日立製作所 | 非点収差を有する光束を用いた焦点ずれ検出方法及び光ディスク装置 |
FR2688332B1 (fr) * | 1992-03-03 | 1995-12-01 | Thomson Csf | Procede et dispositif d'enregistrement lecture d'information sur un support optique ou magneto-optique mobile. |
-
1995
- 1995-03-14 FR FR9502922A patent/FR2731808B1/fr not_active Expired - Fee Related
-
1996
- 1996-03-08 CN CN96190190A patent/CN1096061C/zh not_active Expired - Fee Related
- 1996-03-08 WO PCT/FR1996/000372 patent/WO1996028815A1/fr active IP Right Grant
- 1996-03-08 KR KR1019960706150A patent/KR100432207B1/ko not_active IP Right Cessation
- 1996-03-08 JP JP8527330A patent/JPH10500524A/ja active Pending
- 1996-03-08 EP EP96906808A patent/EP0789907B1/de not_active Expired - Lifetime
- 1996-03-08 DE DE69628133T patent/DE69628133T2/de not_active Expired - Fee Related
- 1996-03-08 US US08/732,341 patent/US5864526A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP0789907B1 (de) | 2003-05-14 |
EP0789907A1 (de) | 1997-08-20 |
CN1148439A (zh) | 1997-04-23 |
CN1096061C (zh) | 2002-12-11 |
DE69628133T2 (de) | 2004-03-18 |
WO1996028815A1 (fr) | 1996-09-19 |
KR970703029A (ko) | 1997-06-10 |
US5864526A (en) | 1999-01-26 |
FR2731808B1 (fr) | 1997-04-11 |
KR100432207B1 (ko) | 2004-11-10 |
FR2731808A1 (fr) | 1996-09-20 |
JPH10500524A (ja) | 1998-01-13 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8339 | Ceased/non-payment of the annual fee |