FR2325987A1 - Dispositif de lecture optique d'un enregistrement - Google Patents
Dispositif de lecture optique d'un enregistrementInfo
- Publication number
- FR2325987A1 FR2325987A1 FR7529707A FR7529707A FR2325987A1 FR 2325987 A1 FR2325987 A1 FR 2325987A1 FR 7529707 A FR7529707 A FR 7529707A FR 7529707 A FR7529707 A FR 7529707A FR 2325987 A1 FR2325987 A1 FR 2325987A1
- Authority
- FR
- France
- Prior art keywords
- recording
- reading device
- optical reading
- optical
- reading
- 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.)
- Granted
Links
- 230000003287 optical effect Effects 0.000 title 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
- 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
- G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
- G11B7/005—Reproducing
-
- 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
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7529707A FR2325987A1 (fr) | 1975-09-29 | 1975-09-29 | Dispositif de lecture optique d'un enregistrement |
US05/726,161 US4059841A (en) | 1975-09-29 | 1976-09-24 | Optical read-out system including asymetrical beam intensity and four detector cells |
GB40079/76A GB1563318A (en) | 1975-09-29 | 1976-09-27 | Optical read-out system |
CA262,252A CA1068404A (fr) | 1975-09-29 | 1976-09-28 | Systeme de lecture optique |
JP51117061A JPS599085B2 (ja) | 1975-09-29 | 1976-09-29 | 光学的読取装置 |
DE2643990A DE2643990C2 (de) | 1975-09-29 | 1976-09-29 | Vorrichtung zum optischen Lesen einer Aufzeichnung |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7529707A FR2325987A1 (fr) | 1975-09-29 | 1975-09-29 | Dispositif de lecture optique d'un enregistrement |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2325987A1 true FR2325987A1 (fr) | 1977-04-22 |
FR2325987B1 FR2325987B1 (fr) | 1979-04-06 |
Family
ID=9160561
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7529707A Granted FR2325987A1 (fr) | 1975-09-29 | 1975-09-29 | Dispositif de lecture optique d'un enregistrement |
Country Status (6)
Country | Link |
---|---|
US (1) | US4059841A (fr) |
JP (1) | JPS599085B2 (fr) |
CA (1) | CA1068404A (fr) |
DE (1) | DE2643990C2 (fr) |
FR (1) | FR2325987A1 (fr) |
GB (1) | GB1563318A (fr) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2385171A1 (fr) * | 1977-03-22 | 1978-10-20 | Philips Nv | Dispositif pour la lecture d'un porteur d'enregistrement reflechissant du rayonnement |
FR2390749A1 (fr) * | 1977-05-11 | 1978-12-08 | Pioneer Electronic Corp | Appareil d'asservissement de la focalisation d'un ensemble de lecture d'informations |
EP0022682A1 (fr) * | 1979-06-29 | 1981-01-21 | Thomson-Csf | Tête de lecture optique à source laser à semi-conducteur, et dispositif de lecture par réflexion d'un support d'information comportant une telle tête optique |
FR2497365A1 (fr) * | 1980-12-26 | 1982-07-02 | Hitachi Ltd | Appareil optique de detection de position focale et appareil d'enregistrement et de lecture optiques de disque muni d'un tel appareil de detection |
EP0061384A1 (fr) * | 1981-03-24 | 1982-09-29 | Thomson-Csf | Senseur optique d'asservissement de focalisation |
EP0190438A2 (fr) * | 1985-02-04 | 1986-08-13 | International Business Machines Corporation | Compensation du décalage de la boucle d'asservissement de focalisation |
US4823330A (en) * | 1985-02-04 | 1989-04-18 | International Business Machines Corporation | Focus servo loop off-set compensation |
Families Citing this family (66)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL7708200A (nl) * | 1976-07-28 | 1978-01-31 | Hitachi Ltd | Automatische scherpstellingsinrichting. |
JPS5398802A (en) * | 1977-02-09 | 1978-08-29 | Mitsubishi Electric Corp | Optical reproducer |
NL7703077A (nl) * | 1977-03-22 | 1978-09-26 | Philips Nv | Inrichting voor het uitlezen van een stralings- reflekterende registratiedrager. |
FR2396379A1 (fr) * | 1977-07-01 | 1979-01-26 | Thomson Brandt | Lecteur optique de disque d'information muni d'un dispositif d'acces automatique aux informations |
US4142098A (en) * | 1977-07-05 | 1979-02-27 | Zenith Radio Corporation | Optical readout for reflective video discs |
JPS54117333A (en) * | 1978-03-04 | 1979-09-12 | Nippon Steel Corp | Heat treating method for galvanized steel strip |
JPS54133305A (en) * | 1978-04-07 | 1979-10-17 | Hitachi Ltd | Information recorder |
JPS55927A (en) * | 1978-06-16 | 1980-01-07 | Pioneer Video Corp | Focus servo unit of optical information reader |
JPS6038771B2 (ja) * | 1978-06-19 | 1985-09-03 | パイオニア株式会社 | 光学式情報読取装置のサ−ボ装置 |
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 |
NL7809227A (nl) * | 1978-09-11 | 1980-03-13 | Philips Nv | Registratiedrager met een optisch uitleesbare, stra- lingsreflekterende informatiestruktuur. |
US4333152A (en) * | 1979-02-05 | 1982-06-01 | Best Robert M | TV Movies that talk back |
US4305131A (en) * | 1979-02-05 | 1981-12-08 | Best Robert M | Dialog between TV movies and human viewers |
US4569026A (en) * | 1979-02-05 | 1986-02-04 | Best Robert M | TV Movies that talk back |
US4445187A (en) * | 1979-02-05 | 1984-04-24 | Best Robert M | Video games with voice dialog |
JPS5690434A (en) * | 1979-12-19 | 1981-07-22 | Hitachi Ltd | Optical information reproducing device |
GB2066449B (en) * | 1979-12-21 | 1984-03-21 | Rolls Royce | Monitoring distance variations |
NL8000122A (nl) * | 1980-01-09 | 1981-08-03 | Philips Nv | Schijfvormige, optisch uitleesbare registratiedrager als opslagmedium voor datainformatie, inrichting voor het vervaardigen van zo'n registratiedrager, inrichting voor het optekenen en/of weergeven van datainformatie in c.q. van zo'n registratiedrager. |
CA1132258A (fr) * | 1980-05-12 | 1982-09-21 | Herman W. Willemsen | Tete d'exploration pour systeme optique a disques |
JPS5744236A (en) * | 1980-08-29 | 1982-03-12 | Matsushita Electric Ind Co Ltd | Optical information reproducer |
JPS5766533A (en) * | 1980-10-09 | 1982-04-22 | Olympus Optical Co Ltd | Optical information reader |
JPS5774837A (en) * | 1980-10-25 | 1982-05-11 | Olympus Optical Co Ltd | Signal detection system of optical information reproducing device |
US4385373A (en) * | 1980-11-10 | 1983-05-24 | Eastman Kodak Company | Device for focus and alignment control in optical recording and/or playback apparatus |
US4504938A (en) * | 1981-04-07 | 1985-03-12 | Victor Company Of Japan, Limited | Device for feedback controlling focus of an optical system in an information recording/reproducing apparatus |
JPS57195634U (fr) * | 1981-06-05 | 1982-12-11 | ||
EP0068390B1 (fr) * | 1981-06-22 | 1990-08-22 | Kabushiki Kaisha Toshiba | Tête optique |
US4458144A (en) * | 1981-06-30 | 1984-07-03 | Storage Technology Corporation | Apparatus for reading information stored in a track pattern on a radiation reflecting record |
JPS5819744A (ja) * | 1981-07-24 | 1983-02-04 | Sony Corp | 光学式記録再生装置 |
JPS58102342A (ja) * | 1981-12-14 | 1983-06-17 | Mitsubishi Electric Corp | 光学式情報再生装置 |
JPS5938937A (ja) * | 1982-08-25 | 1984-03-03 | Akai Electric Co Ltd | 非点収差式光ピツクアツプ |
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 |
US4555968A (en) * | 1984-06-07 | 1985-12-03 | Preco Industries, Inc. | Web fed die cutting press having automatic 3-axis die registration system |
JPH069090B2 (ja) * | 1984-06-12 | 1994-02-02 | 株式会社東芝 | 光学ヘツド |
US4563058A (en) * | 1984-06-28 | 1986-01-07 | International Business Machines Corporation | Optical signal recorder employing a transducer having an adjustable dichroic mirror |
US4752922A (en) * | 1984-07-06 | 1988-06-21 | Storage Technology Partners 11 | Optical disk recording and readout system having read, write and coarse light beams |
US4694447A (en) * | 1984-07-12 | 1987-09-15 | International Business Machines Corp. | Optical signal recorders employing two lasers and methods therefor |
JPS6175684A (ja) * | 1984-09-21 | 1986-04-18 | Canon Inc | カメラ |
US4899327A (en) * | 1985-02-04 | 1990-02-06 | International Business Machines Corporation | Focus servo loop correction |
US4740940A (en) * | 1985-03-11 | 1988-04-26 | Matsushita Electric Industrial Co., Ltd. | Optical information read apparatus |
JPS61264521A (ja) * | 1985-05-20 | 1986-11-22 | Hitachi Ltd | 光学式読取再生装置 |
JPS62132242A (ja) * | 1985-12-04 | 1987-06-15 | Hitachi Ltd | 光デイスク装置 |
JPH063648B2 (ja) * | 1986-01-16 | 1994-01-12 | 松下電器産業株式会社 | 光学的情報再生装置 |
US4799210A (en) * | 1986-11-05 | 1989-01-17 | Unisys Corporation | Fiber optic read/write head for an optical disk memory system |
JPH0770088B2 (ja) * | 1986-12-18 | 1995-07-31 | キヤノン電子株式会社 | 光検出器 |
JPH0777048B2 (ja) * | 1987-06-26 | 1995-08-16 | 三菱電機株式会社 | 記録媒体駆動装置 |
US4958245A (en) * | 1988-04-07 | 1990-09-18 | Insite Peripherals, Inc. | Apparatus and method for optical servo control with media having information storage and servo control regions of different reflectivities |
US6141300A (en) * | 1989-06-20 | 2000-10-31 | Discovision Associates | Optical actuator including lens assembly with optical axis having symmetric suspensory forces acting thereon and optical disc system including same |
US5265079A (en) | 1991-02-15 | 1993-11-23 | Applied Magnetics Corporation | Seek actuator for optical recording |
US5161133A (en) * | 1989-09-29 | 1992-11-03 | International Business Machines Corporation | Magneto-optical storage system |
JPH03130972A (ja) * | 1989-10-16 | 1991-06-04 | Matsushita Electric Ind Co Ltd | トラック検索装置及びトラッキング制御装置 |
US5677899A (en) * | 1991-02-15 | 1997-10-14 | Discovision Associates | Method for moving carriage assembly from initial position to target position relative to storage medium |
US6236625B1 (en) * | 1991-02-15 | 2001-05-22 | Discovision Associates | Optical disc system having current monitoring circuit with controller for laser driver and method for operating same |
US6069857A (en) * | 1991-02-15 | 2000-05-30 | Discovision Associates | Optical disc system having improved circuitry for performing blank sector check on readable disc |
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 |
US5353272A (en) * | 1992-12-29 | 1994-10-04 | Eastman Kodak Company | Apparatus and method for a modified half-aperture focus/tracking/data sensor system |
FR2723243B1 (fr) * | 1994-07-26 | 1996-09-06 | Thomson Csf | Dispositif d'enregistrement et/ou de lecture de tetes magnetiques et son procede de realisation |
US6091684A (en) * | 1995-01-25 | 2000-07-18 | Discovision Associates | Optical disc system and method for changing the rotational rate of an information storage medium |
US6434087B1 (en) | 1995-01-25 | 2002-08-13 | Discovision Associates | Optical disc system and method for controlling bias coil and light source to process information on a storage medium |
US5748578A (en) * | 1995-01-25 | 1998-05-05 | Discovision Associates | Colpitts type oscillator having reduced ringing and improved optical disc system utilizing same |
FR2739965B1 (fr) * | 1995-10-17 | 1997-11-07 | Thomson Csf | Dispositif emetteur-recepteur de lumiere et systeme de lecture optique |
DE19611904A1 (de) * | 1996-03-26 | 1997-10-02 | Thomson Brandt Gmbh | Gerät zum Lesen und/oder Beschreiben optischer Aufzeichnungsträger |
FR2786345B1 (fr) | 1998-11-24 | 2001-02-09 | Thomson Csf | Dispositif de cryptage quantique |
US7149173B2 (en) * | 2000-10-17 | 2006-12-12 | Thales | Medium for recording optically readable data, method for making same and optical system reproducing said data |
US6657219B2 (en) * | 2001-02-12 | 2003-12-02 | International Business Machines Corporation | Optical detection and measurement system |
FR2824905B1 (fr) * | 2001-05-15 | 2003-08-29 | Thomson Csf | Gyrometre a fibre optique |
RU2742816C1 (ru) * | 2020-03-24 | 2021-02-11 | Общество с ограниченной ответственностью «ФОРМ» | Низкоиндуктивный шунт |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2212070A6 (fr) * | 1972-08-25 | 1974-07-19 | Thomson Csf | |
US3909608A (en) * | 1972-12-26 | 1975-09-30 | Thomson Csf | Reproducing device for the optical reading out of a record carrying an embossed print |
FR2266932B1 (fr) * | 1973-03-02 | 1977-09-02 | Thomson Brandt | |
FR2235448B1 (fr) * | 1973-06-29 | 1976-05-07 | Thomson Brandt | |
DE2445333A1 (de) * | 1973-10-01 | 1975-04-10 | Philips Nv | Optoelektronisches system zur bestimmung einer abweichung zwischen der istlage und der sollage einer ebene in einem optischen abbildungssystem |
NL7413162A (nl) * | 1974-10-07 | 1976-04-09 | Philips Nv | Inrichting voor het uitlezen van een schijf- vormige registratiedrager. |
US4001494A (en) * | 1974-11-01 | 1977-01-04 | Zenith Radio Corporation | Photoreceptor matrix for optical video playback system |
NL181693C (nl) * | 1974-11-29 | 1987-10-01 | Philips Nv | Inrichting voor het langs optische weg uitlezen van een stralingsreflekterende registratiedrager. |
US3983317A (en) * | 1974-12-09 | 1976-09-28 | Teletype Corporation | Astigmatizer for laser recording and reproducing system |
NL177157C (nl) * | 1975-02-28 | 1985-08-01 | Philips Nv | Inrichting voor het uitlezen van een vlakke registratiedrager met een optisch uitleesbare informatiestruktuur. |
NL182990C (nl) * | 1975-07-07 | 1988-06-16 | Philips Nv | Inrichting voor het uitlezen van een stralingsreflekterende registratiedrager. |
US4025949A (en) * | 1975-12-31 | 1977-05-24 | Zenith Radio Corporation | Symmetrical astigmatic focus sensing system |
-
1975
- 1975-09-29 FR FR7529707A patent/FR2325987A1/fr active Granted
-
1976
- 1976-09-24 US US05/726,161 patent/US4059841A/en not_active Expired - Lifetime
- 1976-09-27 GB GB40079/76A patent/GB1563318A/en not_active Expired
- 1976-09-28 CA CA262,252A patent/CA1068404A/fr not_active Expired
- 1976-09-29 JP JP51117061A patent/JPS599085B2/ja not_active Expired
- 1976-09-29 DE DE2643990A patent/DE2643990C2/de not_active Expired
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2385171A1 (fr) * | 1977-03-22 | 1978-10-20 | Philips Nv | Dispositif pour la lecture d'un porteur d'enregistrement reflechissant du rayonnement |
FR2390749A1 (fr) * | 1977-05-11 | 1978-12-08 | Pioneer Electronic Corp | Appareil d'asservissement de la focalisation d'un ensemble de lecture d'informations |
EP0022682A1 (fr) * | 1979-06-29 | 1981-01-21 | Thomson-Csf | Tête de lecture optique à source laser à semi-conducteur, et dispositif de lecture par réflexion d'un support d'information comportant une telle tête optique |
FR2460523A1 (fr) * | 1979-06-29 | 1981-01-23 | Thomson Csf | Tete de lecture optique a source laser a semi-conducteur et dispositif de lecture par reflexion d'un support d'information comportant une telle tete optique |
FR2497365A1 (fr) * | 1980-12-26 | 1982-07-02 | Hitachi Ltd | Appareil optique de detection de position focale et appareil d'enregistrement et de lecture optiques de disque muni d'un tel appareil de detection |
EP0061384A1 (fr) * | 1981-03-24 | 1982-09-29 | Thomson-Csf | Senseur optique d'asservissement de focalisation |
FR2502800A1 (fr) * | 1981-03-24 | 1982-10-01 | Thomson Csf | Senseur optique d'asservissement de focalisation |
EP0190438A2 (fr) * | 1985-02-04 | 1986-08-13 | International Business Machines Corporation | Compensation du décalage de la boucle d'asservissement de focalisation |
EP0190438A3 (en) * | 1985-02-04 | 1987-08-12 | International Business Machines Corporation | Focus servo loop off-set compensation |
US4823330A (en) * | 1985-02-04 | 1989-04-18 | International Business Machines Corporation | Focus servo loop off-set compensation |
Also Published As
Publication number | Publication date |
---|---|
FR2325987B1 (fr) | 1979-04-06 |
US4059841A (en) | 1977-11-22 |
JPS599085B2 (ja) | 1984-02-29 |
GB1563318A (en) | 1980-03-26 |
DE2643990C2 (de) | 1983-11-24 |
JPS5242743A (en) | 1977-04-02 |
DE2643990A1 (de) | 1977-04-14 |
CA1068404A (fr) | 1979-12-18 |
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