KR970703029A - 광 집속 조정 시스템(optical focussing adjustment system) - Google Patents

광 집속 조정 시스템(optical focussing adjustment system)

Info

Publication number
KR970703029A
KR970703029A KR1019960706150A KR19960706150A KR970703029A KR 970703029 A KR970703029 A KR 970703029A KR 1019960706150 A KR1019960706150 A KR 1019960706150A KR 19960706150 A KR19960706150 A KR 19960706150A KR 970703029 A KR970703029 A KR 970703029A
Authority
KR
South Korea
Prior art keywords
adjustment system
optical focussing
focussing adjustment
optical
focussing
Prior art date
Application number
KR1019960706150A
Other languages
English (en)
Other versions
KR100432207B1 (ko
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 filed Critical
Publication of KR970703029A publication Critical patent/KR970703029A/ko
Application granted granted Critical
Publication of KR100432207B1 publication Critical patent/KR100432207B1/ko

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
KR1019960706150A 1995-03-14 1996-03-08 광초점조정시스템 KR100432207B1 (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9502922A FR2731808B1 (fr) 1995-03-14 1995-03-14 Systeme de reglage de focalisation optique
FR9502922 1995-03-14

Publications (2)

Publication Number Publication Date
KR970703029A true KR970703029A (ko) 1997-06-10
KR100432207B1 KR100432207B1 (ko) 2004-11-10

Family

ID=9476998

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019960706150A KR100432207B1 (ko) 1995-03-14 1996-03-08 광초점조정시스템

Country Status (8)

Country Link
US (1) US5864526A (ko)
EP (1) EP0789907B1 (ko)
JP (1) JPH10500524A (ko)
KR (1) KR100432207B1 (ko)
CN (1) CN1096061C (ko)
DE (1) DE69628133T2 (ko)
FR (1) FR2731808B1 (ko)
WO (1) WO1996028815A1 (ko)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
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 (en) * 1998-12-29 2000-07-05 STMicroelectronics S.r.l. Control device for a focus system of a CD driver using the Fuzzy logic
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
DE10297727T5 (de) * 2002-08-14 2005-06-30 Fujitsu Ltd. Optische Speichervorrichtung, optische Vorrichtung und Servosteuerverfahren dafür
KR20060006968A (ko) * 2003-05-16 2006-01-20 코닌클리케 필립스 일렉트로닉스 엔.브이. 확장된 초점 제어
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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2271590B1 (ko) * 1974-01-15 1978-12-01 Thomson Brandt
FR2271617B1 (ko) * 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.

Also Published As

Publication number Publication date
KR100432207B1 (ko) 2004-11-10
WO1996028815A1 (fr) 1996-09-19
EP0789907B1 (fr) 2003-05-14
CN1148439A (zh) 1997-04-23
DE69628133D1 (de) 2003-06-18
EP0789907A1 (fr) 1997-08-20
FR2731808A1 (fr) 1996-09-20
CN1096061C (zh) 2002-12-11
US5864526A (en) 1999-01-26
JPH10500524A (ja) 1998-01-13
DE69628133T2 (de) 2004-03-18
FR2731808B1 (fr) 1997-04-11

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