DE3585404D1 - Fokusservovorrichtung. - Google Patents

Fokusservovorrichtung.

Info

Publication number: DE3585404D1
Authority: DE; Germany
Prior art keywords: focuser; focuser device
Prior art date: 1984-11-13
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

DE8585308262T

Other languages

English (en)

Inventor

Junichi C O Pioneer Ele Yoshio

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.)

Pioneer Corp

Original Assignee

Pioneer Electronic Corp

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.)

1984-11-13

Filing date

1985-11-13

Publication date

1992-03-26

1985-11-13 Application filed by Pioneer Electronic Corp filed Critical Pioneer Electronic Corp

1992-03-26 Application granted granted Critical

1992-03-26 Publication of DE3585404D1 publication Critical patent/DE3585404D1/de

2005-11-14 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

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
- G11B7/0948—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 specially adapted for detection and avoidance or compensation of imperfections on the carrier, e.g. dust, scratches, dropouts
- 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
- G11B7/0941—Methods and circuits for servo gain or phase compensation during operation
- 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
- G11B7/0901—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 track following only
- G11B7/0903—Multi-beam tracking systems
- 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

DE8585308262T 1984-11-13 1985-11-13 Fokusservovorrichtung. Expired - Lifetime DE3585404D1 (de)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
JP59237571A JPS61117737A (ja)	1984-11-13	1984-11-13	フオ−カスサ−ボ装置

Publications (1)

Publication Number	Publication Date
DE3585404D1 true DE3585404D1 (de)	1992-03-26

Family

ID=17017285

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
DE8585308262T Expired - Lifetime DE3585404D1 (de)	1984-11-13	1985-11-13	Fokusservovorrichtung.

Country Status (4)

Country	Link
US (1)	US4736354A (de)
EP (1)	EP0183435B1 (de)
JP (1)	JPS61117737A (de)
DE (1)	DE3585404D1 (de)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPS62180568A (ja) *	1986-02-04	1987-08-07	Sony Corp	デイスク状記録媒体の欠陥検出装置
US5003523A (en) *	1987-03-25	1991-03-26	Sony Corporation	Apparatus for recording and reproducing information on an optical disk with a focus servo system for avoiding influence of traverse signal during search
JPS6446237A (en) *	1987-08-12	1989-02-20	Canon Kk	Optical information recording and reproducing device
JPH01156801A (ja) *	1987-12-14	1989-06-20	Mitsubishi Electric Corp	記憶装置
JP2625476B2 (ja) *	1988-03-02	1997-07-02	キヤノン株式会社	光学的記録再生装置
JP2642672B2 (ja) *	1988-06-29	1997-08-20	富士通株式会社	光ディスク装置
JP2695446B2 (ja) *	1988-08-31	1997-12-24	キヤノン株式会社	光学的情報記録再生装置
EP0363195B1 (de) *	1988-10-05	1995-08-02	Pioneer Electronic Corporation	Plattenspieler mit Servokreis von variabler Übertragungsfunktion
JP2518907B2 (ja) *	1988-10-31	1996-07-31	パイオニア株式会社	光ディスクプレ―ヤのチルトサ―ボ装置
JP2542463Y2 (ja) *	1989-01-12	1997-07-30	株式会社ケンウッド	デイスクの傷検出回路
JP2734054B2 (ja) *	1989-02-03	1998-03-30	ソニー株式会社	光ディスク装置のトラッキングエラー検出装置及びトラッキングエラー検出方法
JPH0785310B2 (ja) *	1989-04-07	1995-09-13	シャープ株式会社	信号処理回路内蔵型受光素子
US5218589A (en) *	1989-04-24	1993-06-08	Ricoh Company, Ltd.	Defect detecting method
JP2621537B2 (ja) *	1990-02-07	1997-06-18	松下電器産業株式会社	光電流電圧変換器及び光ディスク記録／再生装置
DE4017487A1 (de) *	1990-05-31	1991-12-05	Thomson Brandt Gmbh	Servoregelkreis
JPH08287472A (ja) *	1995-04-17	1996-11-01	Canon Inc	情報再生装置
JP3563239B2 (ja) *	1997-07-10	2004-09-08	パイオニア株式会社	フォーカス制御装置
KR100312104B1 (ko) *	1997-11-28	2002-04-06	윤종용	밸런스게인튜닝장치
JP2001307346A (ja) *	2000-04-24	2001-11-02	Pioneer Electronic Corp	光学式ディスクプレーヤのサーボ制御装置
JP2001307347A (ja)	2000-04-24	2001-11-02	Pioneer Electronic Corp	光学式ディスクプレーヤのサーボ制御装置及びその方法

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPS6030016B2 (ja) *	1979-09-25	1985-07-13	日本ビクター株式会社	円盤状記録媒体記録及び／又は再生装置のサ−ボ方式
JPS5746357A (en) *	1980-09-04	1982-03-16	Matsushita Electric Ind Co Ltd	Tracking servo circuit
JPS57113428A (en) *	1980-12-29	1982-07-14	Pioneer Video Corp	Focus servo device
US4414655A (en) *	1981-03-31	1983-11-08	Discovision Associates	Scanning beam control system
JPS5873023A (ja) *	1981-10-27	1983-05-02	Pioneer Electronic Corp	情報読取装置におけるトラツキングサ−ボ信号発生装置
JPS58189842A (ja) *	1982-04-30	1983-11-05	Toshiba Corp	光学式デジタルデイスクプレ−ヤ装置
JPS58212633A (ja) *	1982-06-04	1983-12-10	Nec Corp	フオ−カス制御装置
US4587644A (en) *	1982-11-11	1986-05-06	Sony Corporation	Tracking servocontrol circuits for reducing gain to avoid tracking defect in an optical reproducing apparatus
DE3247566C2 (de) *	1982-12-22	1985-02-28	Bosch-Siemens Hausgeräte GmbH, 7000 Stuttgart	Backofen mit Umluftgebläse
NL8300291A (nl) *	1983-01-27	1984-08-16	Philips Nv	Inrichting voor het uitlezen van een optische registratiedrager.

1984
- 1984-11-13 JP JP59237571A patent/JPS61117737A/ja active Pending
1985
- 1985-11-13 DE DE8585308262T patent/DE3585404D1/de not_active Expired - Lifetime
- 1985-11-13 EP EP85308262A patent/EP0183435B1/de not_active Expired
1987
- 1987-08-12 US US07/085,269 patent/US4736354A/en not_active Expired - Fee Related

Also Published As

Publication number	Publication date
EP0183435B1 (de)	1992-02-19
EP0183435A3 (en)	1987-07-29
EP0183435A2 (de)	1986-06-04
US4736354A (en)	1988-04-05
JPS61117737A (ja)	1986-06-05

Publication	Publication Date	Title
DE3576747D1 (de)	1990-04-26	Entwicklungsgeraet.
NO854061L (no)	1986-04-17	Koblingsanordning.
DE3577754D1 (de)	1990-06-21	Verbindungsvorrichtung.
DE3583139D1 (de)	1991-07-11	Wiederfuellvorrichtung.
DE3583127D1 (de)	1991-07-11	Fixiervorrichtung.
NO154900C (no)	1987-01-07	Elektroakustisk anordning.
DE3584799D1 (de)	1992-01-16	Halbleitervorrichtung.
DE3585404D1 (de)	1992-03-26	Fokusservovorrichtung.
DE3581370D1 (de)	1991-02-21	Halbleitervorrichtung.
DE3578906D1 (de)	1990-08-30	Biegevorrichtung.
DE3483103D1 (de)	1990-10-04	Ueberwachungseinrichtung.
NO165567C (no)	1991-02-27	Overvaakningsanordning.
DE3669644D1 (de)	1990-04-26	Epiliergeraet.
NO158450C (no)	1988-09-14	Spenneanordning.
DE3574752D1 (de)	1990-01-18	Federueberwachungsgeraet.
DE3584614D1 (de)	1991-12-12	Schnittstelleneinrichtung.
DE3586568D1 (de)	1992-10-08	Halbleitereinrichtung.
NO163268C (no)	1990-05-02	Siktinnretning.
DE3675325D1 (de)	1990-12-06	Kaltverfestigungsvorrichtung.
DE3672759D1 (de)	1990-08-23	Entschichtungsvorrichtung.
FI860551A0 (fi)	1986-02-06	Gas-luft-avskiljare.
DE3576554D1 (de)	1990-04-19	Lagervorrichtung.
NO164498C (no)	1990-10-10	Spenneanordning.
NO853416L (no)	1986-03-03	Koblingsanordning.
IT8522500A0 (it)	1985-10-16	Apparecchio di collegamento.

Legal Events

Date	Code	Title	Description
1993-03-25	8364	No opposition during term of opposition
1996-11-07	8339	Ceased/non-payment of the annual fee