DE68923670T2 - Plattenspieler mit Servokreis von variabler Übertragungsfunktion. - Google Patents
Plattenspieler mit Servokreis von variabler Übertragungsfunktion.Info
- Publication number
- DE68923670T2 DE68923670T2 DE68923670T DE68923670T DE68923670T2 DE 68923670 T2 DE68923670 T2 DE 68923670T2 DE 68923670 T DE68923670 T DE 68923670T DE 68923670 T DE68923670 T DE 68923670T DE 68923670 T2 DE68923670 T2 DE 68923670T2
- Authority
- DE
- Germany
- Prior art keywords
- turntable
- transfer function
- servo circuit
- variable transfer
- variable
- 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
- 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
- G11B7/002—Recording, reproducing or erasing systems characterised by the shape or form of the carrier
- G11B7/0037—Recording, reproducing or erasing systems characterised by the shape or form of the carrier with discs
- G11B7/00375—Recording, reproducing or erasing systems characterised by the shape or form of the carrier with discs arrangements for detection of physical defects, e.g. of recording layer
-
- 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
- G11B7/08523—Methods for track change, selection or preliminary positioning by moving the head with both tracking and focusing pull-in
-
- 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
- G11B7/0946—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 operation during external perturbations not related to the carrier or servo beam, e.g. vibration
-
- 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 |
---|---|---|---|
JP25122488A JPH0298825A (ja) | 1988-10-05 | 1988-10-05 | ディスク演奏装置 |
JP25122588A JPH0298826A (ja) | 1988-10-05 | 1988-10-05 | ディスクプレーヤ |
Publications (2)
Publication Number | Publication Date |
---|---|
DE68923670D1 DE68923670D1 (de) | 1995-09-07 |
DE68923670T2 true DE68923670T2 (de) | 1996-02-22 |
Family
ID=26540109
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE68923670T Expired - Fee Related DE68923670T2 (de) | 1988-10-05 | 1989-10-05 | Plattenspieler mit Servokreis von variabler Übertragungsfunktion. |
Country Status (3)
Country | Link |
---|---|
US (1) | US5245599A (de) |
EP (1) | EP0363195B1 (de) |
DE (1) | DE68923670T2 (de) |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2563648B2 (ja) * | 1990-06-18 | 1996-12-11 | 松下電器産業株式会社 | 光学式記録再生装置 |
JPH0778975B2 (ja) * | 1990-09-27 | 1995-08-23 | インターナシヨナル・ビジネス・マシーンズ・コーポレーシヨン | 光学ディスク駆動装置 |
KR100272118B1 (ko) * | 1991-11-06 | 2000-11-15 | 이데이 노부유끼 | 디지탈 서보 제어 회로를 구비한 광디스크 플레이어 및 트래킹 서보 회로 |
JP3426669B2 (ja) * | 1993-11-22 | 2003-07-14 | 三洋電機株式会社 | エラー信号発生回路 |
JP3595992B2 (ja) * | 1996-05-22 | 2004-12-02 | ソニー株式会社 | 記録媒体駆動装置および記録媒体駆動方法 |
JP3839959B2 (ja) * | 1998-06-05 | 2006-11-01 | パイオニア株式会社 | 情報再生装置、情報記録装置、情報再生方法及び情報記録方法 |
US6339565B1 (en) | 1999-03-31 | 2002-01-15 | Lsi Logic Corporation | Non-linear center-error generator for DVD servo control |
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 |
DE60102162D1 (de) * | 2000-07-12 | 2004-04-01 | Disccontrol Aps Klarup | Verfahren zur verbesserten wiedergabe einer digitalen datenplatte |
JP2002150576A (ja) * | 2000-11-14 | 2002-05-24 | Sony Corp | 再生装置および方法、並びに記録媒体 |
DE10122601C2 (de) * | 2001-05-10 | 2003-03-27 | Grundig Ag | Verfahren und Vorrichtung für optische Datenerfassung |
JP2009518768A (ja) * | 2005-12-08 | 2009-05-07 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | 光記録担体のクラックを検出する方法および機器 |
US9142249B1 (en) * | 2013-12-06 | 2015-09-22 | Western Digital Technologies, Inc. | Disk drive using timing loop control signal for vibration compensation in servo loop |
US9111575B1 (en) | 2014-10-23 | 2015-08-18 | Western Digital Technologies, Inc. | Data storage device employing adaptive feed-forward control in timing loop to compensate for vibration |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3367134D1 (en) * | 1982-05-31 | 1986-11-27 | Hitachi Ltd | Servo circuit for a signal reproducing apparatus |
CA1212764A (en) * | 1982-11-11 | 1986-10-14 | Sony Corporation | Tracking servocontrol circuits for use in an optical reproducing apparatus |
JPS6074129A (ja) * | 1983-09-30 | 1985-04-26 | Sony Corp | 光学式デイスクのトラツキングサ−ボ回路 |
JP2548106B2 (ja) * | 1984-05-23 | 1996-10-30 | ソニー株式会社 | 光学式デイスクプレ−ヤのトラツキング・サ−ボコントロ−ル装置 |
JPS6139940A (ja) * | 1984-07-31 | 1986-02-26 | Pioneer Electronic Corp | 光情報デイスク再生装置 |
JPS61117737A (ja) * | 1984-11-13 | 1986-06-05 | Pioneer Electronic Corp | フオ−カスサ−ボ装置 |
US4764860A (en) * | 1985-06-26 | 1988-08-16 | Nippon Gakki Seizo Kabushiki Kaisha | Servo circuit for an information recording and/or reproducing apparatus |
US4701603A (en) * | 1985-10-17 | 1987-10-20 | Optical Disc Corporation | Focus control system for optical information recorder or player |
EP0232134B1 (de) * | 1986-02-07 | 1994-08-24 | Matsushita Electric Industrial Co., Ltd. | Optische Platte und Plattengerät zum Aufzeichnen oder Wiedergeben von Daten in oder von der Platte |
JPH0648542B2 (ja) * | 1988-06-17 | 1994-06-22 | パイオニア株式会社 | トラッキングサーボ装置 |
-
1989
- 1989-10-05 EP EP89310191A patent/EP0363195B1/de not_active Expired - Lifetime
- 1989-10-05 DE DE68923670T patent/DE68923670T2/de not_active Expired - Fee Related
- 1989-10-05 US US07/416,790 patent/US5245599A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP0363195B1 (de) | 1995-08-02 |
EP0363195A2 (de) | 1990-04-11 |
US5245599A (en) | 1993-09-14 |
DE68923670D1 (de) | 1995-09-07 |
EP0363195A3 (en) | 1990-11-28 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8320 | Willingness to grant licences declared (paragraph 23) | ||
8339 | Ceased/non-payment of the annual fee |