TR24658A - Bir optik tarama tertibati icin bir odak kontrol devresi. - Google Patents
Bir optik tarama tertibati icin bir odak kontrol devresi.Info
- Publication number
- TR24658A TR24658A TR90/1013A TR101390A TR24658A TR 24658 A TR24658 A TR 24658A TR 90/1013 A TR90/1013 A TR 90/1013A TR 101390 A TR101390 A TR 101390A TR 24658 A TR24658 A TR 24658A
- Authority
- TR
- Turkey
- Prior art keywords
- focussing
- control circuit
- focus control
- optical scan
- recording medium
- Prior art date
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
- 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
- G11B7/0909—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 by astigmatic methods
-
- 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
- G11B7/094—Methods and circuits for servo offset compensation
Landscapes
- Optical Recording Or Reproduction (AREA)
- Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
- Air Humidification (AREA)
- Medicines Containing Plant Substances (AREA)
- Focusing (AREA)
- Looms (AREA)
- Medicines Containing Material From Animals Or Micro-Organisms (AREA)
- Automatic Focus Adjustment (AREA)
- Eye Examination Apparatus (AREA)
- Lubrication Of Internal Combustion Engines (AREA)
- Ignition Installations For Internal Combustion Engines (AREA)
- Telescopes (AREA)
- Details Of Television Scanning (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3936032A DE3936032A1 (de) | 1989-10-28 | 1989-10-28 | Fokusregelkreis |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| TR24658A true TR24658A (tr) | 1992-03-01 |
Family
ID=6392483
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| TR90/1013A TR24658A (tr) | 1989-10-28 | 1990-10-26 | Bir optik tarama tertibati icin bir odak kontrol devresi. |
Country Status (14)
| Country | Link |
|---|---|
| EP (1) | EP0500547B1 (xx) |
| JP (1) | JP2930715B2 (xx) |
| KR (1) | KR100251289B1 (xx) |
| CN (1) | CN1022518C (xx) |
| AT (1) | ATE114381T1 (xx) |
| AU (1) | AU6405190A (xx) |
| DE (2) | DE3936032A1 (xx) |
| ES (1) | ES2064763T3 (xx) |
| FI (1) | FI921879L (xx) |
| HK (1) | HK68795A (xx) |
| HU (1) | HU208588B (xx) |
| MY (1) | MY107278A (xx) |
| TR (1) | TR24658A (xx) |
| WO (1) | WO1991006949A1 (xx) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5978329A (en) * | 1995-06-07 | 1999-11-02 | Discovision Associates | Technique for closed loop servo operation in optical disc tracking control |
| US20040213115A1 (en) * | 2001-05-11 | 2004-10-28 | Hideki Nakata | Optical head, disc recording/reproducing apparatus, and objective lens drive method |
| DE102005018461A1 (de) * | 2005-04-20 | 2006-10-26 | Deutsche Thomson-Brandt Gmbh | Fokusregelung für optischen Abtaster |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2150385A (en) * | 1983-10-19 | 1985-06-26 | Pioneer Electronic Corp | Video disc focussing |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61269241A (ja) * | 1985-05-24 | 1986-11-28 | Sony Corp | 光学ヘツド用焦点検出装置 |
-
1989
- 1989-10-28 DE DE3936032A patent/DE3936032A1/de not_active Withdrawn
-
1990
- 1990-09-21 ES ES90913816T patent/ES2064763T3/es not_active Expired - Lifetime
- 1990-09-21 AT AT90913816T patent/ATE114381T1/de active
- 1990-09-21 FI FI921879A patent/FI921879L/fi not_active Application Discontinuation
- 1990-09-21 HU HU921300A patent/HU208588B/hu not_active IP Right Cessation
- 1990-09-21 WO PCT/EP1990/001603 patent/WO1991006949A1/de not_active Ceased
- 1990-09-21 JP JP2512856A patent/JP2930715B2/ja not_active Expired - Fee Related
- 1990-09-21 KR KR1019920700988A patent/KR100251289B1/ko not_active Expired - Fee Related
- 1990-09-21 AU AU64051/90A patent/AU6405190A/en not_active Abandoned
- 1990-09-21 DE DE59007781T patent/DE59007781D1/de not_active Expired - Fee Related
- 1990-09-21 EP EP90913816A patent/EP0500547B1/de not_active Expired - Lifetime
- 1990-10-23 MY MYPI90001852A patent/MY107278A/en unknown
- 1990-10-26 TR TR90/1013A patent/TR24658A/xx unknown
- 1990-10-27 CN CN90108670A patent/CN1022518C/zh not_active Expired - Fee Related
-
1995
- 1995-05-04 HK HK68795A patent/HK68795A/xx not_active IP Right Cessation
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2150385A (en) * | 1983-10-19 | 1985-06-26 | Pioneer Electronic Corp | Video disc focussing |
Also Published As
| Publication number | Publication date |
|---|---|
| WO1991006949A1 (de) | 1991-05-16 |
| AU6405190A (en) | 1991-05-31 |
| CN1051444A (zh) | 1991-05-15 |
| JP2930715B2 (ja) | 1999-08-03 |
| KR920704282A (ko) | 1992-12-19 |
| KR100251289B1 (ko) | 2000-04-15 |
| EP0500547A1 (de) | 1992-09-02 |
| FI921879A7 (fi) | 1992-04-27 |
| DE3936032A1 (de) | 1991-05-02 |
| HU208588B (en) | 1993-11-29 |
| EP0500547B1 (de) | 1994-11-23 |
| FI921879A0 (fi) | 1992-04-27 |
| JPH05501327A (ja) | 1993-03-11 |
| HU9201300D0 (en) | 1992-07-28 |
| HUT60874A (en) | 1992-10-28 |
| ES2064763T3 (es) | 1995-02-01 |
| ATE114381T1 (de) | 1994-12-15 |
| CN1022518C (zh) | 1993-10-20 |
| MY107278A (en) | 1995-10-31 |
| DE59007781D1 (de) | 1995-01-05 |
| FI921879L (fi) | 1992-04-27 |
| HK68795A (en) | 1995-05-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE3166473D1 (en) | Focus detector | |
| ES2039526T3 (es) | Procedimiento para un dispositivo de exploracion optica. | |
| HU9203592D0 (en) | Optical scanner | |
| DE69212694D1 (de) | Optische Abtastvorrichtung | |
| EP0117715A1 (en) | Optical disc players | |
| TR24658A (tr) | Bir optik tarama tertibati icin bir odak kontrol devresi. | |
| HUT60873A (en) | Automatic track control circuit | |
| US6426494B1 (en) | Optical signal detector and optical signal detecting method | |
| JPS63311630A (ja) | カ−ド型光記録媒体用光検出器 | |
| JPS56147164A (en) | Copying apparatus capable of reading and writing image | |
| US5146444A (en) | Servo control loop | |
| JPS5883342A (ja) | 光学式情報読取装置におけるレ−ザ出力制御装置 | |
| US5105417A (en) | Apparatus for reproducing information out of optical record medium | |
| SU628504A1 (ru) | Устройство дл считывани информации | |
| KR100394314B1 (ko) | 광학픽업의광학조정방법 | |
| JPS571956A (en) | Setting device for gain in reading radiation picture information | |
| SU1677520A1 (ru) | Фотоэлектрическое измерительное устройство | |
| SU1735906A1 (ru) | Устройство дл записи и считывани информации | |
| KR890005684A (ko) | 데이타 재생장치 | |
| KR940004611A (ko) | 데이타 신호에서 잡음요소를 감소시키는 방법 및 장치 | |
| FR2393362A1 (fr) | Dispositif automatique de reglage sans contact d'une distance, dans l'enregistrement et la reproduction optiques de signaux | |
| JPS57169933A (en) | Optical disc reproducer | |
| JPS57135326A (en) | Photodetecting device | |
| JPS575186A (en) | Recorder | |
| JPS6489038A (en) | Focus controller |