ES2078032T3 - Dispositivo de exploracion optica. - Google Patents
Dispositivo de exploracion optica.Info
- Publication number
- ES2078032T3 ES2078032T3 ES92903667T ES92903667T ES2078032T3 ES 2078032 T3 ES2078032 T3 ES 2078032T3 ES 92903667 T ES92903667 T ES 92903667T ES 92903667 T ES92903667 T ES 92903667T ES 2078032 T3 ES2078032 T3 ES 2078032T3
- Authority
- ES
- Spain
- Prior art keywords
- drive
- optical
- control
- precision
- approximate
- 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
- 230000003287 optical effect Effects 0.000 title abstract 7
- 238000012544 monitoring process Methods 0.000 abstract 1
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
- G11B7/0901—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
- G11B7/094—Methods and circuits for servo offset compensation
Landscapes
- Optical Recording Or Reproduction (AREA)
Abstract
EN UN REPRODUCTOR DE CD SE CONDUCE EL RAYO DE LUZ (L) QUE EXPLORA LOS DATOS DEL CD POR MEDIO DE UN CIRCUITO DE CONTROL Y SEGUIMIENTO QUE COMPRENDE UN ACCIONAMIENTO DE CONTROL APROXIMADO (M, SP) Y UN ACCIONAMIENTO DE PRECISION (S), A LO LARGO DE LAS PISTAS DE DATOS DEL CD. COMO EL MARGEN DE REGULACION DEL ACCIONAMIENTO DE PRECISION (S) ES RELATIVAMENTE PEQUEÑO, EL ACCIONAMIENTO DE CONTROL APROXIMADO (M, SP) CONTROLA EL DISPOSITIVO DE EXPLORACION OPTICO (AV) DE TAL FORMA QUE EL MARGEN DE CONTROL DEL ACCIONAMIENTO DE CONTROL DE PRECISION (S) PERMANECE SIMETRICO. PERO CUANDO LA POSICION CENTRAL MECANICA DE LA LENTE DEL OBJETIVO (O), LA CUAL ESTA FIJADA POR MEDIO DE MUELLES Y/O ELEMENTOS DE AMORTIGUACION, NO COINCIDE CON LA POSICION CENTRAL OPTICA, TRABAJA EL ACCIONAMIENTO DE PRECISION (S) DE FORMA NO SIMETRICA. CON EL FIN DE GARANTIZAR QUE EL MARGEN DE CONTROL DEL ACCIONAMIENTO DE PRECISION (S) SEA SIEMPRE SIMETRICO, CON INDEPENDENCIA DE LA POSICION CENTRAL MECANICA ADOPTADA POR LA LENTE DEL OBJETIVO (O), LA INVENCION SE VALE DE UNA SEÑAL (GS), LA CUAL ES PROPORCIONAL A LA DESVIACION ENTRE EL EJE OPTICO DE LA LENTE DEL OBJETIVO (O) Y EL EJE OPTICO DEL DISPOSITIVO DE EXPLORACION OPTICA (AV), QUE SERA USADA COMO SEÑAL DE CONTROL PARA EL ACCIONAMIENTO APROXIMADO (M, SP). LA DISTANCIA FISICA ENTRE LOS DOS EJES OPTICOS PUEDE SER MEDIDA, POR EJEMPLO, POR MEDIO DE UN FOTODETECTOR DE CUATRO CUADRANTES. UNA VENTAJA IMPORTANTE CONSISTE EN QUE YA NO SON NECESARIOS MEDIOS MECANICOS PARA FIJAR LA LENTE DEL OBJETIVO (O) EN UNA POSICION CENTRAL MECANICA. LA INVENCION TIENE APLICACION EN APARATOS REPRODUCTORES DE CD, REPRODUCTORES DE DISCOS DE VIDEO, REPRODUCTORES DE DISCOS DRAW Y APARATOS OPTICO-MAGNETICOS.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4103854A DE4103854A1 (de) | 1991-02-08 | 1991-02-08 | Optische abtastvorrichtung |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES2078032T3 true ES2078032T3 (es) | 1995-12-01 |
Family
ID=6424662
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES92903667T Expired - Lifetime ES2078032T3 (es) | 1991-02-08 | 1992-02-04 | Dispositivo de exploracion optica. |
Country Status (11)
| Country | Link |
|---|---|
| US (1) | US5570328A (es) |
| EP (2) | EP0570415B1 (es) |
| JP (1) | JPH06504869A (es) |
| CN (1) | CN1030358C (es) |
| DE (2) | DE4103854A1 (es) |
| ES (1) | ES2078032T3 (es) |
| HK (1) | HK69397A (es) |
| MX (1) | MX9200558A (es) |
| MY (1) | MY111874A (es) |
| WO (1) | WO1992014243A1 (es) |
| ZA (1) | ZA92900B (es) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19743935A1 (de) | 1997-10-04 | 1999-04-08 | Thomson Brandt Gmbh | Gerät zum Lesen oder Beschreiben optischer Aufzeichnungsträger |
| CN102323590B (zh) * | 2011-05-30 | 2012-12-26 | 北京理工大学 | 一种半主动激光目标方位精确识别装置 |
| CN111650634B (zh) * | 2020-05-22 | 2022-06-14 | 中国科学院上海应用物理研究所 | 一种基于纵向相位测量的束流位置探测器机械中心标定方法 |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57130240A (en) * | 1981-02-05 | 1982-08-12 | Olympus Optical Co Ltd | Optical information recording and reproducing device and information recording medium for it |
| NL8105072A (nl) * | 1981-11-10 | 1983-06-01 | Philips Nv | Electro-optische inrichting. |
| US4686662A (en) * | 1984-07-16 | 1987-08-11 | Storage Technology Partners Ii | Subaperture coarse tracking optical system for optical data storage devices |
| US4782474A (en) * | 1985-01-31 | 1988-11-01 | Fujitsu Limited | Tracking servo system for controllably projecting an optical beam on an optical disk |
| US5208792A (en) * | 1987-05-29 | 1993-05-04 | Matsushita Electric Industrial Co., Ltd. | Recording and reproducing apparatus using opto-magneto media |
| JPH01173324A (ja) * | 1987-12-28 | 1989-07-10 | Toshiba Corp | 情報処理装置 |
| JPH01273228A (ja) * | 1988-04-25 | 1989-11-01 | Sharp Corp | 光ピックアップ装置 |
| KR930007174B1 (ko) * | 1989-03-31 | 1993-07-31 | 가부시기가이샤 도시바 | 픽업 이송 장치 |
| JP2747332B2 (ja) * | 1989-07-05 | 1998-05-06 | 三菱電機株式会社 | 光ヘッド |
| US5412634A (en) * | 1990-02-16 | 1995-05-02 | Deutsche Thomson-Brandt Gmbh | Optical scanning device for a disc player including improved focusing apparatus |
| KR920006926A (ko) * | 1990-09-29 | 1992-04-28 | 정용문 | 광디스크 구동장치의 트랙편심 보정 방법 및 그 장치 |
| JPH0690976B2 (ja) * | 1990-10-05 | 1994-11-14 | インターナショナル・ビジネス・マシーンズ・コーポレーション | 光磁気記録媒体 |
| US5452276A (en) * | 1991-01-31 | 1995-09-19 | Deutsche Thomson-Brandt/Gmbh | Tracking regulation circuit including apparatus for disabling coarse drive signals |
-
1991
- 1991-02-08 DE DE4103854A patent/DE4103854A1/de not_active Withdrawn
-
1992
- 1992-02-04 EP EP92903667A patent/EP0570415B1/de not_active Expired - Lifetime
- 1992-02-04 DE DE59203394T patent/DE59203394D1/de not_active Expired - Fee Related
- 1992-02-04 WO PCT/EP1992/000230 patent/WO1992014243A1/de not_active Ceased
- 1992-02-04 EP EP19920200347 patent/EP0498512A3/de active Pending
- 1992-02-04 ES ES92903667T patent/ES2078032T3/es not_active Expired - Lifetime
- 1992-02-04 JP JP50325892A patent/JPH06504869A/ja active Pending
- 1992-02-07 MY MYPI92000207A patent/MY111874A/en unknown
- 1992-02-07 ZA ZA92900A patent/ZA92900B/xx unknown
- 1992-02-08 CN CN92101591A patent/CN1030358C/zh not_active Expired - Fee Related
- 1992-02-10 MX MX9200558A patent/MX9200558A/es unknown
-
1995
- 1995-03-03 US US08/400,432 patent/US5570328A/en not_active Expired - Lifetime
-
1997
- 1997-05-22 HK HK69397A patent/HK69397A/xx not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| MX9200558A (es) | 1992-08-01 |
| EP0498512A3 (en) | 1993-06-09 |
| CN1030358C (zh) | 1995-11-22 |
| DE59203394D1 (de) | 1995-09-28 |
| DE4103854A1 (de) | 1992-08-27 |
| US5570328A (en) | 1996-10-29 |
| ZA92900B (en) | 1993-01-27 |
| EP0498512A2 (de) | 1992-08-12 |
| JPH06504869A (ja) | 1994-06-02 |
| MY111874A (en) | 2001-02-28 |
| HK69397A (en) | 1997-05-30 |
| WO1992014243A1 (de) | 1992-08-20 |
| CN1066930A (zh) | 1992-12-09 |
| EP0570415A1 (de) | 1993-11-24 |
| EP0570415B1 (de) | 1995-08-23 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FG2A | Definitive protection |
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