JPH0221056B2 - - Google Patents
Info
- Publication number
- JPH0221056B2 JPH0221056B2 JP55149565A JP14956580A JPH0221056B2 JP H0221056 B2 JPH0221056 B2 JP H0221056B2 JP 55149565 A JP55149565 A JP 55149565A JP 14956580 A JP14956580 A JP 14956580A JP H0221056 B2 JPH0221056 B2 JP H0221056B2
- Authority
- JP
- Japan
- Prior art keywords
- signal
- light
- sum
- tracking
- circuit
- 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
- 238000001514 detection method Methods 0.000 claims description 47
- 230000003287 optical effect Effects 0.000 claims description 40
- 230000000630 rising effect Effects 0.000 claims description 14
- 238000010586 diagram Methods 0.000 description 19
- 238000005070 sampling Methods 0.000 description 15
- 238000009826 distribution Methods 0.000 description 11
- 230000007246 mechanism Effects 0.000 description 6
- 230000035945 sensitivity Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 210000001747 pupil Anatomy 0.000 description 3
- 230000003111 delayed effect Effects 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 210000003128 head Anatomy 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000005236 sound signal Effects 0.000 description 1
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
-
- 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
- G11B7/0906—Differential phase difference 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
-
- 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
-
- 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
-
- 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
- G11B7/1359—Single prisms
-
- 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
- G11B7/0917—Focus-error methods other than those covered by G11B7/0909 - G11B7/0916
- G11B2007/0919—Critical angle methods
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Recording Or Reproduction (AREA)
- Optical Head (AREA)
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55149565A JPS5774837A (en) | 1980-10-25 | 1980-10-25 | Signal detection system of optical information reproducing device |
| DE8181304999T DE3171138D1 (en) | 1980-10-25 | 1981-10-23 | Signal detection system for use in an optically operating reproducing apparatus |
| EP81304999A EP0050967B1 (en) | 1980-10-25 | 1981-10-23 | Signal detection system for use in an optically operating reproducing apparatus |
| US06/314,482 US4467462A (en) | 1980-10-25 | 1981-10-23 | Signal detection system for use in an optically reproducing apparatus |
| KR1019810004042A KR880000362B1 (ko) | 1980-10-25 | 1981-10-24 | 광학식 정보 재생 장치에 있어서 신호 검출 방식 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55149565A JPS5774837A (en) | 1980-10-25 | 1980-10-25 | Signal detection system of optical information reproducing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5774837A JPS5774837A (en) | 1982-05-11 |
| JPH0221056B2 true JPH0221056B2 (US06818201-20041116-C00086.png) | 1990-05-11 |
Family
ID=15477951
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP55149565A Granted JPS5774837A (en) | 1980-10-25 | 1980-10-25 | Signal detection system of optical information reproducing device |
Country Status (5)
Families Citing this family (56)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5814332A (ja) * | 1981-07-16 | 1983-01-27 | Mitsubishi Electric Corp | 光学式情報再生装置 |
| JPS5873023A (ja) * | 1981-10-27 | 1983-05-02 | Pioneer Electronic Corp | 情報読取装置におけるトラツキングサ−ボ信号発生装置 |
| JPS5933638A (ja) * | 1982-08-16 | 1984-02-23 | Hitachi Ltd | 情報記録再生方法 |
| US4564929A (en) * | 1981-11-25 | 1986-01-14 | Hitachi, Ltd. | Information recording and reproducing apparatus with tracking control by sampling |
| JPS58118039A (ja) * | 1982-01-06 | 1983-07-13 | Hitachi Ltd | 光デイスクトラツク追跡装置 |
| JPS58125242A (ja) * | 1982-01-22 | 1983-07-26 | Victor Co Of Japan Ltd | 光学的情報信号再生装置のトラツキング誤差検出方式 |
| JPS58150145A (ja) * | 1982-03-03 | 1983-09-06 | Toshiba Corp | 光学式デジタルデイスクプレ−ヤのトラツキング制御回路 |
| JPS58155533A (ja) * | 1982-03-11 | 1983-09-16 | Akai Electric Co Ltd | 光ピツクアツプのトラツキングサ−ボ信号検出方法 |
| JPS58200473A (ja) * | 1982-05-19 | 1983-11-22 | Pioneer Video Kk | 情報読取装置 |
| JPS58208944A (ja) * | 1982-05-31 | 1983-12-05 | Sony Corp | 光学ヘツド制御信号発生装置 |
| JPS58215736A (ja) * | 1982-06-07 | 1983-12-15 | Pioneer Electronic Corp | 光学式記録情報読取装置におけるサ−ボ装置 |
| FR2528605B1 (fr) * | 1982-06-15 | 1987-11-20 | Thomson Csf | Procede et dispositif optique de focalisation d'un faisceau d'energie lumineuse sur un plan de reference d'un support d'information ainsi que ce support |
| JPS5911543A (ja) * | 1982-07-10 | 1984-01-21 | Sony Corp | 光学式デイスク再生装置 |
| JPS5919250A (ja) * | 1982-07-21 | 1984-01-31 | Hitachi Ltd | 情報の記録再生装置 |
| DE3342525A1 (de) * | 1982-11-27 | 1984-05-30 | Canon K.K., Tokio/Tokyo | Geraet zur informations-aufzeichnung und/oder -wiedergabe |
| JPS59110044A (ja) * | 1982-12-13 | 1984-06-25 | Akai Electric Co Ltd | 光ピツクアツプのトラツキングサ−ボ信号検出方法 |
| JPS59157854A (ja) * | 1983-02-28 | 1984-09-07 | Sony Corp | 光学式デイスク・プレ−ヤ−の制御装置 |
| JPS59167861A (ja) * | 1983-03-14 | 1984-09-21 | Sony Corp | 光学式デイスク・プレ−ヤ−のトラツキング制御装置 |
| JPS59191144A (ja) * | 1983-04-14 | 1984-10-30 | Sony Corp | 光ピツクアツプのトラツキングサ−ボ回路 |
| US4665512A (en) * | 1983-09-29 | 1987-05-12 | Kabushiki Kaisha Toshiba | Optical head for erasing |
| NL8303560A (nl) * | 1983-10-17 | 1985-05-17 | Philips Nv | Inrichting voor het weergeven van informatie van een optisch uitleesbare registratiedrager. |
| DE3484678D1 (de) * | 1983-11-22 | 1991-07-11 | Toshiba Kawasaki Kk | Optischer kopf. |
| JPH0690804B2 (ja) * | 1984-01-20 | 1994-11-14 | 株式会社日立製作所 | 光学的情報記録再生装置 |
| NL8400674A (nl) * | 1984-03-02 | 1985-10-01 | Philips Nv | Inrichting voor het inschrijven en/of uitlezen van informatie in een spoor van een reflekterende registratiedrager, met een fokusregeling met verminderde spot offsetgevoeligheid. |
| US4688204A (en) * | 1984-11-16 | 1987-08-18 | Storage Technology Partners Ii | Pulsed optical data detection system |
| DE3678311D1 (de) * | 1985-02-15 | 1991-05-02 | Hitachi Ltd | Optisches plattengeraet. |
| US4740940A (en) * | 1985-03-11 | 1988-04-26 | Matsushita Electric Industrial Co., Ltd. | Optical information read apparatus |
| DE3618720A1 (de) * | 1985-06-05 | 1986-12-11 | Hitachi, Ltd., Tokio/Tokyo | Verfahren und vorrichtung zur spurnachfuehrung bei bildplatten |
| JP2786181B2 (ja) * | 1985-12-21 | 1998-08-13 | ソニー株式会社 | 光ディスク装置 |
| 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 |
| JPS62270033A (ja) * | 1986-05-19 | 1987-11-24 | Yamaha Corp | 光ピツクアツプ制御装置 |
| JP2796285B2 (ja) * | 1986-07-11 | 1998-09-10 | 株式会社日立製作所 | トラッキング方法及びそれを用いた光ディスク装置 |
| JPH0679378B2 (ja) * | 1986-12-15 | 1994-10-05 | ソニー株式会社 | 光学式記録再生装置のトラツキングサ−ボ回路 |
| US4951154A (en) * | 1987-01-28 | 1990-08-21 | Nec Corporation | Magneto-optic recording/reproducing apparatus |
| JPS6446237A (en) * | 1987-08-12 | 1989-02-20 | Canon Kk | Optical information recording and reproducing device |
| JP2735220B2 (ja) * | 1987-12-02 | 1998-04-02 | 株式会社日立製作所 | 非点収差を有する光束を用いた焦点ずれ検出方法及び光ディスク装置 |
| US5272686A (en) * | 1988-11-14 | 1993-12-21 | Ricoh Company, Ltd. | Servo signal generator for optical disk driving apparatus |
| JP2716569B2 (ja) * | 1990-04-25 | 1998-02-18 | パイオニア株式会社 | 光学式情報読取り装置 |
| JP3028854B2 (ja) * | 1990-07-18 | 2000-04-04 | セイコーエプソン株式会社 | 光ヘッド及び光記憶再生装置 |
| US5279112A (en) * | 1992-02-18 | 1994-01-18 | General Electric Company | Fuel line fitting |
| JP3336778B2 (ja) * | 1994-11-25 | 2002-10-21 | 松下電器産業株式会社 | トラッキング誤差検出装置 |
| US5914925A (en) * | 1997-01-10 | 1999-06-22 | Eastman Kodak Company | DRDW differential phase tracking method and apparatus |
| US5956304A (en) * | 1997-08-15 | 1999-09-21 | Cirrus Logic, Inc. | Differential phase error detector using dual arm correlation for servo tracking in an optical disk storage device |
| US6322933B1 (en) | 1999-01-12 | 2001-11-27 | Siros Technologies, Inc. | Volumetric track definition for data storage media used to record data by selective alteration of a format hologram |
| US6111828A (en) * | 1999-01-12 | 2000-08-29 | Siros Technologies, Inc. | Focus error signal generation using confocally filtered detection |
| US6288986B1 (en) | 1999-01-12 | 2001-09-11 | Siros Technologies, Inc. | Focus error signal generation using a birefringent plate with confocal detection |
| US6256271B1 (en) | 1999-01-12 | 2001-07-03 | Siros Technologies, Inc. | Focus error signal generation using two polarizers in confocal configuration |
| US6269057B1 (en) | 1999-01-12 | 2001-07-31 | Siros Technologies, Inc. | Focus error signal generation using a birefringent lens with confocal detection |
| FR2792103B1 (fr) * | 1999-03-16 | 2001-11-09 | St Microelectronics Sa | Procede et dispositif d'asservissement d'un faisceau optique incident sur une piste d'un support mobile d'informations, en particulier un disque numerique |
| DE19924733A1 (de) * | 1999-05-31 | 2000-12-07 | Thomson Brandt Gmbh | Gerät zum Lesen oder Beschreiben optischer Aufzeichnungsträger |
| US6322931B1 (en) | 1999-07-29 | 2001-11-27 | Siros Technologies, Inc. | Method and apparatus for optical data storage using non-linear heating by excited state absorption for the alteration of pre-formatted holographic gratings |
| US6512606B1 (en) | 1999-07-29 | 2003-01-28 | Siros Technologies, Inc. | Optical storage media and method for optical data storage via local changes in reflectivity of a format grating |
| US6310850B1 (en) | 1999-07-29 | 2001-10-30 | Siros Technologies, Inc. | Method and apparatus for optical data storage and/or retrieval by selective alteration of a holographic storage medium |
| KR100933291B1 (ko) * | 2003-09-20 | 2009-12-22 | 삼성전자주식회사 | 2파장 레이저 다이오드의 사용을 위한 광검출기 |
| CN100487384C (zh) * | 2007-02-02 | 2009-05-13 | 清华大学深圳研究生院 | 光学头三维力矩器倾斜运动特性曲线的测试方法 |
| KR102179574B1 (ko) * | 2017-06-07 | 2020-11-16 | 에스케이가스 주식회사 | 환원 전처리를 포함하는 올레핀 제조 방법 |
Family Cites Families (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4057833A (en) * | 1974-10-03 | 1977-11-08 | U.S. Philips Corporation | Centering detection system for an apparatus for playing optically readable record carriers |
| NL182990C (nl) * | 1975-07-07 | 1988-06-16 | Philips Nv | Inrichting voor het uitlezen van een stralingsreflekterende registratiedrager. |
| FR2323160A1 (fr) * | 1975-09-03 | 1977-04-01 | Thomson Brandt | Dispositif optique de projection et lecteur optique comportant un tel dispositif |
| FR2325987A1 (fr) * | 1975-09-29 | 1977-04-22 | Thomson Brandt | Dispositif de lecture optique d'un enregistrement |
| US4025949A (en) * | 1975-12-31 | 1977-05-24 | Zenith Radio Corporation | Symmetrical astigmatic focus sensing system |
| NL7600843A (nl) * | 1976-01-28 | 1977-08-01 | Philips Nv | Inrichting voor het uitlezen van een registratie- drager waarop informatie, bijvoorbeeld en/of ge- luidsinformatie, is aangebracht. |
| GB1532345A (en) * | 1976-06-25 | 1978-11-15 | Hitachi Ltd | Information play-back apparatus |
| NL7708200A (nl) * | 1976-07-28 | 1978-01-31 | Hitachi Ltd | Automatische scherpstellingsinrichting. |
| JPS5329701A (en) * | 1976-09-01 | 1978-03-20 | Olympus Optical Co Ltd | Forcussing and tracking system in optical information reading reproducer |
| US4290132A (en) * | 1977-05-11 | 1981-09-15 | Pioneer Electronic Corporation | Focus servo device for use in an optical information read-out device |
| US4180822A (en) * | 1978-04-13 | 1979-12-25 | Rca Corporation | Optical scanner and recorder |
| JPS6040093B2 (ja) * | 1978-09-09 | 1985-09-09 | パイオニアビデオ株式会社 | トラッキングサ−ボ引込装置 |
| US4232201A (en) * | 1978-11-24 | 1980-11-04 | Mca Discovision, Inc. | Dithered center tracking system |
| JPS5821334B2 (ja) * | 1978-12-25 | 1983-04-28 | 株式会社東芝 | 自動焦点調節装置 |
| GB2057218B (en) * | 1979-06-25 | 1984-02-29 | Olympus Optical Co | Detecting focussing error |
| NL7907216A (nl) * | 1979-09-28 | 1981-03-31 | Philips Nv | Optisch fokusfout-detektiestelsel. |
| JPS5661045A (en) * | 1979-10-25 | 1981-05-26 | Olympus Optical Co Ltd | Optical information reader |
-
1980
- 1980-10-25 JP JP55149565A patent/JPS5774837A/ja active Granted
-
1981
- 1981-10-23 DE DE8181304999T patent/DE3171138D1/de not_active Expired
- 1981-10-23 US US06/314,482 patent/US4467462A/en not_active Expired - Lifetime
- 1981-10-23 EP EP81304999A patent/EP0050967B1/en not_active Expired
- 1981-10-24 KR KR1019810004042A patent/KR880000362B1/ko active
Also Published As
| Publication number | Publication date |
|---|---|
| EP0050967A1 (en) | 1982-05-05 |
| KR830008290A (ko) | 1983-11-18 |
| JPS5774837A (en) | 1982-05-11 |
| KR880000362B1 (ko) | 1988-03-20 |
| US4467462A (en) | 1984-08-21 |
| DE3171138D1 (en) | 1985-08-01 |
| EP0050967B1 (en) | 1985-06-26 |
