DE3564632D1 - Tracking control arrangements for use in optical disc players - Google Patents
Tracking control arrangements for use in optical disc playersInfo
- Publication number
- DE3564632D1 DE3564632D1 DE8585303578T DE3564632T DE3564632D1 DE 3564632 D1 DE3564632 D1 DE 3564632D1 DE 8585303578 T DE8585303578 T DE 8585303578T DE 3564632 T DE3564632 T DE 3564632T DE 3564632 D1 DE3564632 D1 DE 3564632D1
- Authority
- DE
- Germany
- Prior art keywords
- optical disc
- tracking control
- control arrangements
- disc players
- players
- 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
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
- G11B7/0938—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 servo format, e.g. guide tracks, pilot signals
-
- 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
-
- 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
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP59103807A JP2548106B2 (ja) | 1984-05-23 | 1984-05-23 | 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 |
Publications (1)
Publication Number | Publication Date |
---|---|
DE3564632D1 true DE3564632D1 (en) | 1988-09-29 |
Family
ID=14363669
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE8585303578T Expired DE3564632D1 (en) | 1984-05-23 | 1985-05-21 | Tracking control arrangements for use in optical disc players |
Country Status (5)
Country | Link |
---|---|
US (1) | US4700334A (de) |
EP (1) | EP0162702B1 (de) |
JP (1) | JP2548106B2 (de) |
CA (1) | CA1240042A (de) |
DE (1) | DE3564632D1 (de) |
Families Citing this family (25)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3503983A1 (de) * | 1985-02-06 | 1986-08-07 | Deutsche Thomson-Brandt Gmbh, 7730 Villingen-Schwenningen | Fokus-regelung fuer ein geraet fuer plattenfoermige, rotierende informationstraeger |
US4907214A (en) * | 1985-12-18 | 1990-03-06 | Kabushiki Kaisha Toshiba | Eccentricity correction apparatus for an optical disk device |
NL194811C (nl) * | 1986-01-16 | 2003-03-04 | Mitsubishi Electric Corp | Servoschakeling. |
JPS62180568A (ja) * | 1986-02-04 | 1987-08-07 | Sony Corp | デイスク状記録媒体の欠陥検出装置 |
JPH056575Y2 (de) * | 1986-04-18 | 1993-02-19 | ||
JPH0626972Y2 (ja) * | 1986-10-03 | 1994-07-20 | パイオニア株式会社 | 光学式ピツクアツプ装置 |
DE3783561T2 (de) * | 1986-10-24 | 1993-05-06 | Pioneer Electronic Corp | Servovorrichtung fuer einen schlitten. |
US4982392A (en) * | 1987-07-10 | 1991-01-01 | Ricoh Company, Ltd. | Stabilized optical pick-up device inhibiting the effect of the focus error signal at the start and end of a data region |
US4974221A (en) * | 1987-07-17 | 1990-11-27 | Canon Kabushiki Kaisha | Method and apparatus for reproducing information by varying a sensitivity of a phase-locked loop in accordance with a detection state of a reproduced signal |
EP0363195B1 (de) * | 1988-10-05 | 1995-08-02 | Pioneer Electronic Corporation | Plattenspieler mit Servokreis von variabler Übertragungsfunktion |
JPH02161620A (ja) * | 1988-12-14 | 1990-06-21 | Asahi Optical Co Ltd | 自動利得制御装置 |
JPH02247831A (ja) * | 1989-03-20 | 1990-10-03 | Pioneer Electron Corp | トラッキングサーボループのループゲイン設定方法 |
JPH035927A (ja) * | 1989-06-01 | 1991-01-11 | Sony Corp | 光学記録および/または再生装置 |
JPH0354737A (ja) * | 1989-07-24 | 1991-03-08 | Sony Corp | 光学記録および/または再生装置 |
US5138594A (en) * | 1990-04-20 | 1992-08-11 | International Business Machines Corporation | Reducing amplitude variations of optical disk readback signals and increasing reliability of track-crossing counts |
US5729511A (en) * | 1991-02-15 | 1998-03-17 | Discovision Associates | Optical disc system having servo motor and servo error detection assembly operated relative to monitored quad sum signal |
DE4415508A1 (de) * | 1994-05-03 | 1995-11-09 | Thomson Brandt Gmbh | Abtastgerät mit Adaptation |
US5978329A (en) * | 1995-06-07 | 1999-11-02 | Discovision Associates | Technique for closed loop servo operation in optical disc tracking control |
EP0777218B1 (de) * | 1995-12-06 | 2001-05-16 | Discovision Associates | Gerät und Verfahren zum Regeln der Fokussierung |
US5689485A (en) * | 1996-04-01 | 1997-11-18 | Discovision Associates | Tracking control apparatus and method |
JPH10198965A (ja) * | 1997-01-10 | 1998-07-31 | Sony Corp | 光ディスク再生方法及び光ディスク再生装置 |
US6262955B1 (en) * | 1997-08-30 | 2001-07-17 | Lg Electronics Inc. | Tracking control method and apparatus and recording medium adaptive to the same |
US7307926B2 (en) * | 2002-09-18 | 2007-12-11 | Matsushita Electric Industrial Co., Ltd. | Apparatus and method for tracking control |
TWI253636B (en) * | 2003-11-19 | 2006-04-21 | Mediatek Inc | Apparatus with switching servo gain and offset for optical disk device and method thereof |
US20090196133A1 (en) * | 2008-02-04 | 2009-08-06 | Chia-Wei Liang | Signal processing apparatus for optical disc and method thereof |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6032264B2 (ja) * | 1977-03-08 | 1985-07-26 | 松下電器産業株式会社 | 光学的再生装置 |
NL7904724A (nl) * | 1979-06-18 | 1980-12-22 | Philips Nv | Optische aftastinrichting met fokusseerstelsel. |
JPS5690434A (en) * | 1979-12-19 | 1981-07-22 | Hitachi Ltd | Optical information reproducing device |
US4466087A (en) * | 1981-01-08 | 1984-08-14 | Xerox Corporation | Optical memory system for a reading/writing, verifying and tracking module |
EP0098076A1 (de) * | 1982-06-14 | 1984-01-11 | Nec Corporation | Strahlzugriffsgerät für eine Vorrichtung mit optischen Scheiben |
JPS5968844A (ja) * | 1982-10-14 | 1984-04-18 | Matsushita Electric Ind Co Ltd | 光学的可逆記録再生装置 |
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 |
-
1984
- 1984-05-23 JP JP59103807A patent/JP2548106B2/ja not_active Expired - Lifetime
-
1985
- 1985-05-21 EP EP85303578A patent/EP0162702B1/de not_active Expired
- 1985-05-21 DE DE8585303578T patent/DE3564632D1/de not_active Expired
- 1985-05-22 CA CA000482060A patent/CA1240042A/en not_active Expired
- 1985-05-23 US US06/737,169 patent/US4700334A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
US4700334A (en) | 1987-10-13 |
JPS60247833A (ja) | 1985-12-07 |
EP0162702A1 (de) | 1985-11-27 |
JP2548106B2 (ja) | 1996-10-30 |
EP0162702B1 (de) | 1988-08-24 |
CA1240042A (en) | 1988-08-02 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition |