DE3684663D1 - Optisches informationsaufnahme- und -wiedergabegeraet. - Google Patents
Optisches informationsaufnahme- und -wiedergabegeraet.Info
- Publication number
- DE3684663D1 DE3684663D1 DE8686308509T DE3684663T DE3684663D1 DE 3684663 D1 DE3684663 D1 DE 3684663D1 DE 8686308509 T DE8686308509 T DE 8686308509T DE 3684663 T DE3684663 T DE 3684663T DE 3684663 D1 DE3684663 D1 DE 3684663D1
- Authority
- DE
- Germany
- Prior art keywords
- information recording
- playback device
- optical information
- playback
- optical
- 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 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
- G11B7/095—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 discs, e.g. for compensation of eccentricity or wobble
- G11B7/0956—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 discs, e.g. for compensation of eccentricity or wobble to compensate for tilt, skew, warp or inclination of the disc, i.e. maintain the optical axis at right angles to the disc
-
- 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
- G11B7/085—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam into, or out of, its operative position or across tracks, otherwise than during the transducing operation, e.g. for adjustment or preliminary positioning or track change or selection
- G11B7/08505—Methods for track change, selection or preliminary positioning by moving the head
- G11B7/08517—Methods for track change, selection or preliminary positioning by moving the head with tracking pull-in only
-
- 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
-
- 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
-
- 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
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP24509685A JPS62103854A (ja) | 1985-10-30 | 1985-10-30 | 光情報記録再生装置 |
JP60246497A JPH0746434B2 (ja) | 1985-10-31 | 1985-10-31 | 光情報記録再生装置 |
Publications (1)
Publication Number | Publication Date |
---|---|
DE3684663D1 true DE3684663D1 (de) | 1992-05-07 |
Family
ID=26537042
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE8686308509T Expired - Lifetime DE3684663D1 (de) | 1985-10-30 | 1986-10-30 | Optisches informationsaufnahme- und -wiedergabegeraet. |
Country Status (4)
Country | Link |
---|---|
US (1) | US4849953A (de) |
EP (1) | EP0221782B1 (de) |
CA (1) | CA1270559A (de) |
DE (1) | DE3684663D1 (de) |
Families Citing this family (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6378386A (ja) * | 1986-09-19 | 1988-04-08 | Pioneer Electronic Corp | 微調サ−ボ装置におけるオフセツト補償回路 |
US5214635A (en) * | 1987-02-27 | 1993-05-25 | Matsushita Electric Industrial Co., Ltd. | Erasable optical disk and optical information recording/reproduction apparatus |
US4939713A (en) * | 1987-02-27 | 1990-07-03 | Matsushita Electric Industrial Co., Ltd. | Erasable optical disk and optical information recording/reproduction apparatus |
US5396477A (en) * | 1988-09-21 | 1995-03-07 | Hitachi, Ltd. | Light spot positioning method and optical disc memory apparatus employing the same |
JPH069087B2 (ja) * | 1988-10-06 | 1994-02-02 | キヤノン株式会社 | 光学的情報記録再生装置 |
JPH02161620A (ja) * | 1988-12-14 | 1990-06-21 | Asahi Optical Co Ltd | 自動利得制御装置 |
US5268894A (en) * | 1990-04-13 | 1993-12-07 | Pioneer Electronic Corporation | Apparatus for reproducing information by delaying and attenuating a reproducing signal |
JPH0423234A (ja) * | 1990-05-18 | 1992-01-27 | Sony Corp | 光学装置のトラッキング誤差信号生成装置 |
USRE36864E (en) * | 1990-09-27 | 2000-09-12 | International Business Machines Corporation | Optical disk drive and methods for counting the number of tracks on an optical disk |
US5199017A (en) * | 1991-09-11 | 1993-03-30 | International Business Machines Corporation | Optical disk drive and method for counting the number of tracks on an optical disk |
JP2682748B2 (ja) * | 1991-03-05 | 1997-11-26 | 富士通株式会社 | 光記録媒体のトラック横断信号作成回路 |
US5197058A (en) * | 1991-03-05 | 1993-03-23 | Hewlett-Packard Company | Electronic offset compensation of the continuous composite track error signal in optical recording |
JP3176145B2 (ja) * | 1992-09-08 | 2001-06-11 | パイオニア株式会社 | 光学式情報記録再生装置 |
US5566152A (en) * | 1992-10-21 | 1996-10-15 | Matsushita Electric Industrial Co., Ltd. | Tracking control system with correction capabilities for correcting disagreement between optical axes |
JPH06282849A (ja) * | 1993-01-29 | 1994-10-07 | Sony Corp | 光記録媒体、光記録媒体の記録再生装置及び再生装置 |
US5491681A (en) * | 1993-12-13 | 1996-02-13 | I M P, Inc. | Peak detector for amplitude modulated signals |
WO1995031806A1 (fr) * | 1994-05-17 | 1995-11-23 | Sony Corporation | Servomecanisme de poursuite de piste et dispositif de comptage de pistes |
KR0138337B1 (ko) * | 1994-07-28 | 1998-05-15 | 김광호 | 포커스 제어방법 및 장치 |
JP3550836B2 (ja) * | 1995-10-19 | 2004-08-04 | ソニー株式会社 | 光学装置におけるトラッキングサーボ装置及びトラッキングサーボ方法 |
CN1985314A (zh) * | 2004-07-14 | 2007-06-20 | 皇家飞利浦电子股份有限公司 | 改进的跟踪误差信号校准方法以及实现该方法的盘驱动器 |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5814332A (ja) * | 1981-07-16 | 1983-01-27 | Mitsubishi Electric Corp | 光学式情報再生装置 |
US4564929A (en) * | 1981-11-25 | 1986-01-14 | Hitachi, Ltd. | Information recording and reproducing apparatus with tracking control by sampling |
JPS58118039A (ja) * | 1982-01-06 | 1983-07-13 | Hitachi Ltd | 光デイスクトラツク追跡装置 |
JPS58125242A (ja) * | 1982-01-22 | 1983-07-26 | Victor Co Of Japan Ltd | 光学的情報信号再生装置のトラツキング誤差検出方式 |
JPS5919250A (ja) * | 1982-07-21 | 1984-01-31 | Hitachi Ltd | 情報の記録再生装置 |
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 |
JPS59191144A (ja) * | 1983-04-14 | 1984-10-30 | Sony Corp | 光ピツクアツプのトラツキングサ−ボ回路 |
JPS6052935A (ja) * | 1983-09-02 | 1985-03-26 | Toshiba Corp | トラツキングエラ−信号生成回路 |
JPS6061925A (ja) * | 1983-09-14 | 1985-04-09 | Ricoh Co Ltd | 光情報記録再生装置 |
US4782474A (en) * | 1985-01-31 | 1988-11-01 | Fujitsu Limited | Tracking servo system for controllably projecting an optical beam on an optical disk |
JPH0652935A (ja) * | 1992-06-05 | 1994-02-25 | Sony Corp | 装着状態監視機能付き接続装置およびこれを使用した電子機器 |
JP2910429B2 (ja) * | 1992-08-05 | 1999-06-23 | 日本電気株式会社 | 移動無線電話機の位置情報管理装置および方法 |
-
1986
- 1986-10-28 CA CA000521580A patent/CA1270559A/en not_active Expired
- 1986-10-29 US US06/924,262 patent/US4849953A/en not_active Expired - Lifetime
- 1986-10-30 EP EP86308509A patent/EP0221782B1/de not_active Expired
- 1986-10-30 DE DE8686308509T patent/DE3684663D1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
CA1270559A (en) | 1990-06-19 |
US4849953A (en) | 1989-07-18 |
EP0221782B1 (de) | 1992-04-01 |
EP0221782A3 (en) | 1988-09-14 |
EP0221782A2 (de) | 1987-05-13 |
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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 |