ATE141435T1 - Optische abtastvorrichtung - Google Patents
Optische abtastvorrichtungInfo
- Publication number
- ATE141435T1 ATE141435T1 AT92201206T AT92201206T ATE141435T1 AT E141435 T1 ATE141435 T1 AT E141435T1 AT 92201206 T AT92201206 T AT 92201206T AT 92201206 T AT92201206 T AT 92201206T AT E141435 T1 ATE141435 T1 AT E141435T1
- Authority
- AT
- Austria
- Prior art keywords
- beams
- reference signal
- scanning device
- derived
- signal
- 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
- G11B7/0901—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
- G11B7/0903—Multi-beam tracking systems
-
- 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
- G11B7/0941—Methods and circuits for servo gain or phase compensation during operation
Landscapes
- Optical Recording Or Reproduction (AREA)
- Microscoopes, Condenser (AREA)
- Holo Graphy (AREA)
- Analysing Materials By The Use Of Radiation (AREA)
- Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
- Optical Head (AREA)
- Vehicle Body Suspensions (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
- Optical Communication System (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP91201132 | 1991-05-10 | ||
EP91201986 | 1991-07-31 |
Publications (1)
Publication Number | Publication Date |
---|---|
ATE141435T1 true ATE141435T1 (de) | 1996-08-15 |
Family
ID=26129260
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AT92201206T ATE141435T1 (de) | 1991-05-10 | 1992-05-04 | Optische abtastvorrichtung |
Country Status (7)
Country | Link |
---|---|
US (1) | US5155717A (de) |
EP (1) | EP0512616B1 (de) |
JP (1) | JPH06101132B2 (de) |
CN (1) | CN1031602C (de) |
AT (1) | ATE141435T1 (de) |
DE (1) | DE69212694T2 (de) |
TW (1) | TW221074B (de) |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04313819A (ja) * | 1991-01-30 | 1992-11-05 | Pioneer Electron Corp | 光スポット位置検出装置 |
JP2935908B2 (ja) * | 1991-01-30 | 1999-08-16 | パイオニア株式会社 | 光スポット位置検出装置 |
KR950010418B1 (ko) * | 1991-08-28 | 1995-09-16 | 미쯔비시덴끼 가부시끼가이샤 | 광기록재생장치 |
KR950015234A (ko) * | 1993-11-29 | 1995-06-16 | 배순훈 | 광픽업 장치 |
WO1995022822A1 (en) * | 1994-02-22 | 1995-08-24 | Philips Electronics N.V. | Optical scanning device |
KR100385381B1 (ko) * | 1994-08-23 | 2003-05-27 | 코닌클리케 필립스 일렉트로닉스 엔.브이. | 광 기록 캐리어 |
JP3410869B2 (ja) * | 1995-04-11 | 2003-05-26 | 株式会社リコー | 光ピックアップ装置 |
US20030155871A1 (en) * | 1998-01-28 | 2003-08-21 | Yuichi Maekawa | TLN signal generating apparatus used in optical disc drive and optical disc drive equipped with the apparatus, and optical disc drive equipped with amplitude adjusting apparatus for tracking error signal |
US6940676B1 (en) * | 2000-06-07 | 2005-09-06 | Quantum Corporation | Triple push-pull optical tracking system |
WO2002017311A1 (en) * | 2000-08-24 | 2002-02-28 | Thomson Licensing S.A. | Method for generating a corrected error signal, and corresponding apparatus |
DE10041569A1 (de) * | 2000-08-24 | 2002-03-07 | Thomson Brandt Gmbh | Verfahren zum Erzeugen eines korrigierten Fehlersignals sowie entsprechendes Gerät |
JP3959972B2 (ja) * | 2001-02-09 | 2007-08-15 | ソニー株式会社 | 光スポット進行方向判定装置及び方法、光学ヘッド装置制御装置及び方法、並びに光ディスク記録再生装置 |
DE10140325A1 (de) * | 2001-08-16 | 2003-02-27 | Thomson Brandt Gmbh | Verfahren zur Verminderung des Rauschens in einem Wobbelsignal |
JP3800112B2 (ja) * | 2002-03-07 | 2006-07-26 | ヤマハ株式会社 | 光ディスク記録方法およびその装置 |
US7480215B2 (en) * | 2002-11-27 | 2009-01-20 | Nokia Corporation | Read write device for optical memory and method therefore |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL8200208A (nl) * | 1982-01-21 | 1983-08-16 | Philips Nv | Inrichting voor het uitlezen van een schijfvormige registratiedrager. |
NL8202058A (nl) * | 1982-05-19 | 1983-12-16 | Philips Nv | Opto-elektronisch fokusfout-detektiestelsel. |
JPS6378350A (ja) * | 1986-09-20 | 1988-04-08 | Teac Co | 光学式記録再生装置 |
JP2800156B2 (ja) * | 1987-10-06 | 1998-09-21 | 三菱電機株式会社 | 光学式ヘッド装置 |
JPH0296618U (de) * | 1989-01-17 | 1990-08-01 | ||
JPH035927A (ja) * | 1989-06-01 | 1991-01-11 | Sony Corp | 光学記録および/または再生装置 |
-
1991
- 1991-09-06 TW TW080107075A patent/TW221074B/zh active
- 1991-09-09 US US07/758,979 patent/US5155717A/en not_active Expired - Lifetime
-
1992
- 1992-05-04 DE DE69212694T patent/DE69212694T2/de not_active Expired - Fee Related
- 1992-05-04 EP EP92201206A patent/EP0512616B1/de not_active Expired - Lifetime
- 1992-05-04 AT AT92201206T patent/ATE141435T1/de not_active IP Right Cessation
- 1992-05-07 CN CN92103464.4A patent/CN1031602C/zh not_active Expired - Fee Related
- 1992-05-07 JP JP4114848A patent/JPH06101132B2/ja not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
EP0512616A2 (de) | 1992-11-11 |
DE69212694D1 (de) | 1996-09-19 |
CN1066734A (zh) | 1992-12-02 |
JPH06101132B2 (ja) | 1994-12-12 |
JPH05128558A (ja) | 1993-05-25 |
EP0512616A3 (en) | 1993-05-05 |
US5155717A (en) | 1992-10-13 |
EP0512616B1 (de) | 1996-08-14 |
TW221074B (de) | 1994-02-11 |
CN1031602C (zh) | 1996-04-17 |
DE69212694T2 (de) | 1997-02-27 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
UEP | Publication of translation of european patent specification | ||
REN | Ceased due to non-payment of the annual fee |