DE3850922T2 - Spurservoregelungssystem für optisches Plattengerät. - Google Patents
Spurservoregelungssystem für optisches Plattengerät.Info
- Publication number
- DE3850922T2 DE3850922T2 DE3850922T DE3850922T DE3850922T2 DE 3850922 T2 DE3850922 T2 DE 3850922T2 DE 3850922 T DE3850922 T DE 3850922T DE 3850922 T DE3850922 T DE 3850922T DE 3850922 T2 DE3850922 T2 DE 3850922T2
- Authority
- DE
- Germany
- Prior art keywords
- control system
- optical disc
- disc device
- track control
- track
- 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 - Fee Related
Links
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B17/00—Guiding record carriers not specifically of filamentary or web form, or of supports therefor
- G11B17/34—Guiding record carriers during transducing operation, e.g. 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
- G11B7/0941—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
- G11B7/085—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
-
- 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
- G11B7/0901—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
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62214554A JPH0654542B2 (ja) | 1987-08-28 | 1987-08-28 | 光学記憶装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
DE3850922D1 DE3850922D1 (de) | 1994-09-08 |
DE3850922T2 true DE3850922T2 (de) | 1994-12-01 |
Family
ID=16657645
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE3850922T Expired - Fee Related DE3850922T2 (de) | 1987-08-28 | 1988-08-26 | Spurservoregelungssystem für optisches Plattengerät. |
Country Status (5)
Country | Link |
---|---|
US (1) | US4975895A (de) |
EP (1) | EP0305191B1 (de) |
JP (1) | JPH0654542B2 (de) |
KR (1) | KR910005313B1 (de) |
DE (1) | DE3850922T2 (de) |
Families Citing this family (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2844608B2 (ja) * | 1988-08-31 | 1999-01-06 | ヤマハ株式会社 | 光ディスク装置のフィードサーボ回路 |
US5396477A (en) * | 1988-09-21 | 1995-03-07 | Hitachi, Ltd. | Light spot positioning method and optical disc memory apparatus employing the same |
JPH02103790A (ja) * | 1988-10-11 | 1990-04-16 | Pioneer Electron Corp | トラッキングサーボ装置 |
JP2706294B2 (ja) * | 1989-01-25 | 1998-01-28 | キヤノン株式会社 | 光学的情報記録再生装置 |
JP2517104B2 (ja) * | 1989-03-14 | 1996-07-24 | 富士通株式会社 | 光記憶装置のビ―ムトラック位置制御装置及び方法 |
JPH03108128A (ja) * | 1989-09-21 | 1991-05-08 | Olympus Optical Co Ltd | 光学式情報記録再生装置 |
JP2721405B2 (ja) * | 1989-09-28 | 1998-03-04 | パイオニア株式会社 | トラッキングサーボ装置 |
JP2656371B2 (ja) * | 1990-06-26 | 1997-09-24 | 富士通株式会社 | 光ディスク装置 |
US5210732A (en) * | 1990-11-27 | 1993-05-11 | Matsushita Electric Industrial Co., Ltd. | Optical disk apparatus |
JP3074877B2 (ja) * | 1991-11-22 | 2000-08-07 | ソニー株式会社 | 光ディスクプレーヤ |
US5361245A (en) * | 1992-07-13 | 1994-11-01 | Kabushiki Kaisha Toshiba | Optical signal processing apparatus for detecting the direction of movement of an optical reading device relative to an optical disk |
JPH0668498A (ja) * | 1992-08-24 | 1994-03-11 | Toshiba Corp | 情報記録媒体処理装置 |
US5446716A (en) * | 1994-01-10 | 1995-08-29 | Eastman Kodak Company | Laser power control in an optical recording system to compensate for multiple system degradations |
US5675562A (en) | 1995-03-20 | 1997-10-07 | Fujitsu Limited | Seek control method in optical storage device |
JP3645711B2 (ja) * | 1998-05-27 | 2005-05-11 | 松下電器産業株式会社 | 光ディスク装置および光ディスク制御方法 |
JP3968193B2 (ja) * | 1999-04-26 | 2007-08-29 | パイオニア株式会社 | プリピット検出装置 |
TWI253636B (en) * | 2003-11-19 | 2006-04-21 | Mediatek Inc | Apparatus with switching servo gain and offset for optical disk device and method thereof |
US9953671B1 (en) * | 2017-07-31 | 2018-04-24 | Oracle International Corporation | Saturation-based verification of magnetic tape storage |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58105435A (ja) * | 1981-11-21 | 1983-06-23 | Mansei Kogyo Kk | 光学的情報再生装置のトラツキング制御装置 |
JPS58143472A (ja) * | 1982-02-22 | 1983-08-26 | Hitachi Ltd | 記録情報再生装置のトラツキングサ−ボ制御装置 |
JPS58166567A (ja) * | 1982-03-26 | 1983-10-01 | Matsushita Electric Ind Co Ltd | 情報トラックの検索装置 |
EP0095766B1 (de) * | 1982-05-31 | 1986-10-22 | Hitachi, Ltd. | Servoschaltung für ein Gerät zur Wiedergabe von Signalen |
JPS59185077A (ja) * | 1983-04-05 | 1984-10-20 | Pioneer Electronic Corp | トラツキングサ−ボ引込装置 |
JPH06103535B2 (ja) * | 1985-06-12 | 1994-12-14 | オリンパス光学工業株式会社 | 光学式情報記録再生装置 |
JPH067413B2 (ja) * | 1985-07-03 | 1994-01-26 | 株式会社リコー | 光ピツクアツプのトラツキング制御方式 |
JPS6214382A (ja) * | 1985-07-11 | 1987-01-22 | Toshiba Corp | トラツク飛び越し制御回路 |
US4700056A (en) * | 1985-11-13 | 1987-10-13 | Optotech, Inc. | Objective lens focus initialization system |
JPH0724108B2 (ja) * | 1985-11-20 | 1995-03-15 | 株式会社日立製作所 | 光デイスク装置におけるトラツク引きこみ方法 |
JPS62273630A (ja) * | 1986-05-22 | 1987-11-27 | Canon Inc | 光学的情報記録再生装置 |
JPS6316430A (ja) * | 1986-07-08 | 1988-01-23 | Matsushita Graphic Commun Syst Inc | トラツキングサ−ボ装置 |
JPS6297139A (ja) * | 1986-08-29 | 1987-05-06 | Matsushita Electric Ind Co Ltd | フオ−カスサ−ボ引き込み装置 |
DE3783561T2 (de) * | 1986-10-24 | 1993-05-06 | Pioneer Electronic Corp | Servovorrichtung fuer einen schlitten. |
JPS63131332A (ja) * | 1986-11-21 | 1988-06-03 | Ricoh Co Ltd | 光ピツクアツプのトラツキング制御装置 |
-
1987
- 1987-08-28 JP JP62214554A patent/JPH0654542B2/ja not_active Expired - Lifetime
-
1988
- 1988-08-26 EP EP88307913A patent/EP0305191B1/de not_active Expired - Lifetime
- 1988-08-26 DE DE3850922T patent/DE3850922T2/de not_active Expired - Fee Related
- 1988-08-26 US US07/236,915 patent/US4975895A/en not_active Expired - Lifetime
- 1988-08-27 KR KR1019880010941A patent/KR910005313B1/ko not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
US4975895A (en) | 1990-12-04 |
EP0305191A2 (de) | 1989-03-01 |
KR910005313B1 (ko) | 1991-07-24 |
JPH0654542B2 (ja) | 1994-07-20 |
EP0305191A3 (de) | 1991-05-22 |
DE3850922D1 (de) | 1994-09-08 |
KR890004305A (ko) | 1989-04-21 |
EP0305191B1 (de) | 1994-08-03 |
JPS6457426A (en) | 1989-03-03 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8363 | Opposition against the patent | ||
8365 | Fully valid after opposition proceedings | ||
8339 | Ceased/non-payment of the annual fee |