ES2097028T3 - Eliminacion de perturbaciones de exploracion. - Google Patents
Eliminacion de perturbaciones de exploracion.Info
- Publication number
- ES2097028T3 ES2097028T3 ES94905087T ES94905087T ES2097028T3 ES 2097028 T3 ES2097028 T3 ES 2097028T3 ES 94905087 T ES94905087 T ES 94905087T ES 94905087 T ES94905087 T ES 94905087T ES 2097028 T3 ES2097028 T3 ES 2097028T3
- Authority
- ES
- Spain
- Prior art keywords
- auxiliary
- disturbances
- rays
- exploration
- elimination
- 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
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
-
- 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
Landscapes
- Optical Recording Or Reproduction (AREA)
- Optical Head (AREA)
Abstract
LA INVENCION SE REFIERE A UN PROCEDIMIENTO Y UNA DISPOSICION PARA EL SEGUIMIENTO DE LA PISTA Y ELIMINACION DE PERTURBACIONES QUE TIENEN LUGAR EN PARTICULAR DURANTE EXPLORACION OPTICA DE PORTADORES DE INFORMACION. EL OBJETIVO DE LA INVENCION ES EVITAR CON UNA COMPLEJIDAD TECNICA REDUCIDA LOS INCONVENIENTES DE LA ELIMINACION DE PERTURBACIONES CON TIEMPO RETARDADO DE LAS SEÑALES DE RAYOS AUXILIARES. EL PRINCIPIO SOBRE EL CUAL SE BASA LA INVENCION CONSISTE EN INFLUENCIAR LOS RAYOS AUXILIARES (E, F) DE UN EXPLORADOR TRABAJANDO DE ACUERDO CON EL PRINCIPIO DE TRES RAYOS, DE TAL FORMA QUE GOLPEAN EL PORTADOR DE INFORMACION A SER EXPLORADO COMO DOS RAYOS (E, F) AUXILIARES QUE DESCANSAN DE MANERA PROXIMA UNO A OTRO EN LOS RADIOS DE PISTA, DE TAL MODO QUE LAS PERTURBACIONES DEBIDAS A LA SUBSTRACCION ENTRE LAS SEÑALES DE LOS LUGARES DE LUZ AUXILIAR FORMADOS POR MEDIO DE LOS LUGARES (E, F) DE LUZ AUXILIAR SON ELIMINADAS DIRECTAMENTE. SE UTILIZA CON PREFERENCIA UN CRISTAL BIRRESTRINGENTE PARA DIRIGIR LOSRAYOS (E, F) AUXILIARES DE ESTA MANERA. LA INVENCION ES ADECUADA CON PREFERENCIA PARA DISPOSITIVOS DE EXPLORACION DE SOPORTES DE INFORMACION OPTICA.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4301827A DE4301827A1 (de) | 1993-01-23 | 1993-01-23 | Eliminieren von Abtaststörungen |
Publications (1)
Publication Number | Publication Date |
---|---|
ES2097028T3 true ES2097028T3 (es) | 1997-03-16 |
Family
ID=6478810
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES94905087T Expired - Lifetime ES2097028T3 (es) | 1993-01-23 | 1994-01-19 | Eliminacion de perturbaciones de exploracion. |
Country Status (9)
Country | Link |
---|---|
US (1) | US5841745A (es) |
EP (1) | EP0681731B1 (es) |
JP (1) | JPH08509088A (es) |
KR (1) | KR100318508B1 (es) |
CN (1) | CN1046367C (es) |
DE (2) | DE4301827A1 (es) |
ES (1) | ES2097028T3 (es) |
HK (1) | HK72597A (es) |
WO (1) | WO1994017525A1 (es) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002109778A (ja) * | 2000-09-29 | 2002-04-12 | Pioneer Electronic Corp | 光ピックアップ装置 |
DE10100881B4 (de) * | 2001-01-11 | 2006-05-11 | Robert Bosch Gmbh | Vorrichtung zur Seitenaufpralldetektion in einem Kraftfahrzeug |
DE10214775A1 (de) | 2002-04-03 | 2003-10-16 | Thomson Brandt Gmbh | Vorrichtung zur Korrektur von Signalmodulationen |
CN101023476B (zh) * | 2004-09-16 | 2010-12-08 | 皇家飞利浦电子股份有限公司 | 光扫描设备 |
US10153838B1 (en) | 2016-12-28 | 2018-12-11 | Facebook, Inc. | Quad tracker with birefringent optics |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4160269A (en) * | 1971-03-04 | 1979-07-03 | U.S. Philips Corporation | Apparatus for optically reading a phase-modulated optical record carrier |
GB2137746A (en) * | 1983-04-05 | 1984-10-10 | Hewlett Packard Co | Apparatus for Detecting Deviations of Position from a Reference |
DE3339736C1 (de) * | 1983-11-03 | 1985-06-05 | Deutsche Thomson-Brandt Gmbh, 7730 Villingen-Schwenningen | Spurfolgesystem zur Korrektur von Tangentenfehlwinkeln bei optischer Plattenabtastung |
JPH0677318B2 (ja) * | 1983-12-05 | 1994-09-28 | ソニー株式会社 | 光デイスク記録装置 |
US4706235A (en) * | 1985-01-25 | 1987-11-10 | Storage Technology Partners 11 | Differential track recording |
EP0239131A3 (en) * | 1986-03-28 | 1989-05-24 | Csk Corporation | Optical recording medium and tracking method therefor |
JPH01269240A (ja) * | 1988-04-20 | 1989-10-26 | Csk Corp | 光記録装置 |
US5050153A (en) * | 1989-06-06 | 1991-09-17 | Wai-Hon Lee | Semiconductor laser optical head assembly |
JPH03100931A (ja) * | 1989-09-14 | 1991-04-25 | Mitsubishi Electric Corp | 光学式情報記録再生装置 |
KR950010418B1 (ko) * | 1991-08-28 | 1995-09-16 | 미쯔비시덴끼 가부시끼가이샤 | 광기록재생장치 |
US5694385A (en) * | 1993-09-24 | 1997-12-02 | Ricoh Comany, Ltd. | Optical pickup apparatus |
-
1993
- 1993-01-23 DE DE4301827A patent/DE4301827A1/de not_active Withdrawn
-
1994
- 1994-01-19 EP EP94905087A patent/EP0681731B1/de not_active Expired - Lifetime
- 1994-01-19 KR KR1019950703048A patent/KR100318508B1/ko not_active IP Right Cessation
- 1994-01-19 ES ES94905087T patent/ES2097028T3/es not_active Expired - Lifetime
- 1994-01-19 US US08/481,456 patent/US5841745A/en not_active Expired - Fee Related
- 1994-01-19 WO PCT/EP1994/000124 patent/WO1994017525A1/de active IP Right Grant
- 1994-01-19 CN CN94191330A patent/CN1046367C/zh not_active Expired - Fee Related
- 1994-01-19 DE DE59401268T patent/DE59401268D1/de not_active Expired - Lifetime
- 1994-01-19 JP JP6516641A patent/JPH08509088A/ja active Pending
-
1997
- 1997-05-29 HK HK72597A patent/HK72597A/xx not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
CN1046367C (zh) | 1999-11-10 |
DE59401268D1 (de) | 1997-01-23 |
EP0681731A1 (de) | 1995-11-15 |
CN1118634A (zh) | 1996-03-13 |
HK72597A (en) | 1997-06-06 |
US5841745A (en) | 1998-11-24 |
JPH08509088A (ja) | 1996-09-24 |
KR100318508B1 (ko) | 2002-04-22 |
KR960700506A (ko) | 1996-01-20 |
DE4301827A1 (de) | 1994-07-28 |
EP0681731B1 (de) | 1996-12-11 |
WO1994017525A1 (de) | 1994-08-04 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
FG2A | Definitive protection |
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