FR2601174B1 - Dispositif formant tete de type optique, notamment pour l'enregistrement et la lecture de donnees. - Google Patents
Dispositif formant tete de type optique, notamment pour l'enregistrement et la lecture de donnees.Info
- Publication number
- FR2601174B1 FR2601174B1 FR878709137A FR8709137A FR2601174B1 FR 2601174 B1 FR2601174 B1 FR 2601174B1 FR 878709137 A FR878709137 A FR 878709137A FR 8709137 A FR8709137 A FR 8709137A FR 2601174 B1 FR2601174 B1 FR 2601174B1
- Authority
- FR
- France
- Prior art keywords
- recording
- optical
- forming device
- reading data
- type head
- 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
- G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
- G11B7/135—Means for guiding the beam from the source to the record carrier or from the record carrier to the detector
- G11B7/1365—Separate or integrated refractive elements, e.g. wave plates
-
- 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
- G11B7/0908—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 focusing only
- G11B7/0909—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 focusing only by astigmatic methods
-
- 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
- G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
- G11B7/135—Means for guiding the beam from the source to the record carrier or from the record carrier to the detector
- G11B7/1353—Diffractive elements, e.g. holograms or gratings
-
- 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
- G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
- G11B7/135—Means for guiding the beam from the source to the record carrier or from the record carrier to the detector
- G11B7/1381—Non-lens elements for altering the properties of the beam, e.g. knife edges, slits, filters or stops
-
- 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
- G11B7/095—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 discs, e.g. for compensation of eccentricity or wobble
- G11B7/0956—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 discs, e.g. for compensation of eccentricity or wobble to compensate for tilt, skew, warp or inclination of the disc, i.e. maintain the optical axis at right angles to the disc
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Head (AREA)
- Optical Recording Or Reproduction (AREA)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP61154679A JPS6310325A (ja) | 1986-07-01 | 1986-07-01 | 光学式ヘツド装置 |
JP61163071A JPS6320727A (ja) | 1986-07-11 | 1986-07-11 | 光学式ヘツド装置 |
JP61259845A JP2618868B2 (ja) | 1986-10-31 | 1986-10-31 | 光学ヘツドユニット |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2601174A1 FR2601174A1 (fr) | 1988-01-08 |
FR2601174B1 true FR2601174B1 (fr) | 1994-07-01 |
Family
ID=27320702
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR878709137A Expired - Lifetime FR2601174B1 (fr) | 1986-07-01 | 1987-06-29 | Dispositif formant tete de type optique, notamment pour l'enregistrement et la lecture de donnees. |
Country Status (3)
Country | Link |
---|---|
US (1) | US4817072A (fr) |
KR (1) | KR900008380B1 (fr) |
FR (1) | FR2601174B1 (fr) |
Families Citing this family (31)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4970710A (en) * | 1987-07-29 | 1990-11-13 | Laser Magnetic Storage International Company | Method and apparatus for focus and tracking in an optical disk system |
JP2800156B2 (ja) * | 1987-10-06 | 1998-09-21 | 三菱電機株式会社 | 光学式ヘッド装置 |
JPH01151022A (ja) * | 1987-12-09 | 1989-06-13 | Sharp Corp | 光ピックアップ装置 |
JPH01171129A (ja) * | 1987-12-25 | 1989-07-06 | Copal Co Ltd | 光学ヘッド及びトラッキング方法 |
US5115423A (en) * | 1988-01-07 | 1992-05-19 | Ricoh Company, Ltd. | Optomagnetic recording/reproducing apparatus |
US5224082A (en) * | 1988-02-26 | 1993-06-29 | Fujitsu Limited | Method for detecting tracking error in optical disk system and its optical system devices thereof |
JPH0770065B2 (ja) * | 1988-04-20 | 1995-07-31 | シャープ株式会社 | 光ピックアップ装置 |
DE68923833T2 (de) * | 1988-06-20 | 1996-06-13 | Mitsubishi Electric Corp | Optischer Kopf mit Kippkorrekturservomechanismus. |
KR930005785B1 (ko) * | 1988-06-23 | 1993-06-24 | 샤프 가부시끼가이샤 | 광학 픽업장치 |
DE3828050A1 (de) * | 1988-07-11 | 1990-01-18 | Telefunken Electronic Gmbh | Holographisches optisches bauelement |
US5082339A (en) * | 1988-07-11 | 1992-01-21 | Telefunken Electronic Gmbh | Optical read-write head with diffraction grating structure |
US5049732A (en) * | 1988-10-21 | 1991-09-17 | Sharp Kabushiki Kaisha | Optical pickup device with diffraction device |
US5199013A (en) * | 1989-01-18 | 1993-03-30 | Teac Corporation | Optical head apparatus applicable to optical disc apparatus |
US4959532A (en) * | 1989-02-16 | 1990-09-25 | Hughes Aircraft Company | Optical neural network and method |
JPH04318333A (ja) * | 1991-04-17 | 1992-11-09 | Matsushita Electric Ind Co Ltd | 光ヘッド装置 |
JP3246608B2 (ja) * | 1991-11-18 | 2002-01-15 | パイオニア株式会社 | 光学式情報再生装置 |
JP3109877B2 (ja) * | 1991-11-18 | 2000-11-20 | パイオニア株式会社 | 光学式情報再生装置 |
DE69217453T2 (de) * | 1991-11-18 | 1997-08-28 | Pioneer Electronic Corp | Optisches Informationsaufnahmegerät mit abgetrennt-eingeordneten Fotodetektoreinrichtungen |
JP2975466B2 (ja) * | 1991-11-18 | 1999-11-10 | パイオニア株式会社 | 光学式情報再生装置 |
JPH06111334A (ja) * | 1992-09-24 | 1994-04-22 | Sony Corp | 円盤状記録媒体用の記録及び/又は再生装置、光検出器及び光ヘッド |
KR100269161B1 (ko) * | 1993-02-27 | 2000-10-16 | 윤종용 | 광헤드 |
JPH06258587A (ja) * | 1993-03-09 | 1994-09-16 | Fuji Xerox Co Ltd | 集光位置検出装置 |
JP3318636B2 (ja) * | 1994-03-31 | 2002-08-26 | ソニー株式会社 | サーボ装置、光ディスク再生装置 |
KR0141268B1 (ko) * | 1995-02-15 | 1998-07-15 | 배순훈 | 광디스크 기록/재생장치의 광헤드 |
US5787058A (en) * | 1995-05-31 | 1998-07-28 | Daewoo Electronics Co., Ltd. | Optical pickup apparatus utilizing a polygonal prism |
US5748581A (en) * | 1996-02-15 | 1998-05-05 | Kim; Jin Tae | Optical head of an optical disc recording/reproducing apparatus having a polygonal prism |
FR2754096B1 (fr) * | 1996-09-30 | 1999-12-10 | Daewoo Electronics Co Ltd | Dispositif a capteur optique de type compact |
KR100211820B1 (ko) * | 1996-12-30 | 1999-08-02 | 전주범 | 광 픽업 장치 |
TW468062B (en) * | 1998-03-11 | 2001-12-11 | Nippon Sheet Glass Co Ltd | Optical demultiplexer |
US6314223B1 (en) * | 1998-08-31 | 2001-11-06 | Digital Optics Corporation | Diffractive vertical cavity surface emitting laser power monitor and system |
AU2001274079A1 (en) * | 2000-05-30 | 2001-12-11 | Thomson Licensing S.A. | Device for reading and/or writing optical recording media |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL7907216A (nl) * | 1979-09-28 | 1981-03-31 | Philips Nv | Optisch fokusfout-detektiestelsel. |
CA1174882A (fr) * | 1981-02-23 | 1984-09-25 | Charles J. Kramer | Dissecteur de faisceau polariseur a reseau de diffraction plan |
US4462095A (en) * | 1982-03-19 | 1984-07-24 | Magnetic Peripherals Inc. | Moving diffraction grating for an information track centering system for optical recording |
JPS5971142A (ja) * | 1982-10-14 | 1984-04-21 | Mitsubishi Electric Corp | 光学的情報再生装置 |
US4497534A (en) * | 1983-02-28 | 1985-02-05 | International Business Machines Corporation | Holographic optical head |
JPS61122945A (ja) * | 1984-11-20 | 1986-06-10 | Konishiroku Photo Ind Co Ltd | 光学式情報読取装置 |
JPS61122944A (ja) * | 1984-11-20 | 1986-06-10 | Konishiroku Photo Ind Co Ltd | 光学式情報読取装置 |
JPH0619838B2 (ja) * | 1984-12-26 | 1994-03-16 | 株式会社日立製作所 | 光学式再生装置 |
NL8502835A (nl) * | 1985-10-17 | 1987-05-18 | Philips Nv | Inrichting voor het met optische straling aftasten van een informatievlak. |
JPH06173246A (ja) * | 1992-12-10 | 1994-06-21 | Shimizu Corp | 地下構造物の構築工法 |
-
1987
- 1987-06-16 KR KR1019870006080A patent/KR900008380B1/ko not_active IP Right Cessation
- 1987-06-24 US US07/066,009 patent/US4817072A/en not_active Expired - Lifetime
- 1987-06-29 FR FR878709137A patent/FR2601174B1/fr not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
US4817072A (en) | 1989-03-28 |
FR2601174A1 (fr) | 1988-01-08 |
KR880002149A (ko) | 1988-04-29 |
KR900008380B1 (ko) | 1990-11-17 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
D6 | Patent endorsed licences of rights |