FR2540272B1 - Dispositif de lecture d'un support d'information optique - Google Patents
Dispositif de lecture d'un support d'information optiqueInfo
- Publication number
- FR2540272B1 FR2540272B1 FR8401129A FR8401129A FR2540272B1 FR 2540272 B1 FR2540272 B1 FR 2540272B1 FR 8401129 A FR8401129 A FR 8401129A FR 8401129 A FR8401129 A FR 8401129A FR 2540272 B1 FR2540272 B1 FR 2540272B1
- Authority
- FR
- France
- Prior art keywords
- reading
- optical information
- information medium
- medium
- optical
- 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
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
- G11B7/0948—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 detection and avoidance or compensation of imperfections on the carrier, e.g. dust, scratches, dropouts
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G11/00—Limiting amplitude; Limiting rate of change of amplitude ; Clipping in general
- H03G11/04—Limiting level dependent on strength of signal; Limiting level dependent on strength of carrier on which signal is modulated
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL8300291A NL8300291A (nl) | 1983-01-27 | 1983-01-27 | Inrichting voor het uitlezen van een optische registratiedrager. |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2540272A1 FR2540272A1 (fr) | 1984-08-03 |
FR2540272B1 true FR2540272B1 (fr) | 1988-06-10 |
Family
ID=19841294
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR8401129A Expired FR2540272B1 (fr) | 1983-01-27 | 1984-01-25 | Dispositif de lecture d'un support d'information optique |
Country Status (8)
Country | Link |
---|---|
US (1) | US4613961A (fr) |
JP (1) | JPS59144050A (fr) |
BE (1) | BE898754A (fr) |
CA (1) | CA1213051A (fr) |
DE (1) | DE3401138A1 (fr) |
FR (1) | FR2540272B1 (fr) |
GB (1) | GB2134289B (fr) |
NL (1) | NL8300291A (fr) |
Families Citing this family (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61117737A (ja) * | 1984-11-13 | 1986-06-05 | Pioneer Electronic Corp | フオ−カスサ−ボ装置 |
DE3503983A1 (de) * | 1985-02-06 | 1986-08-07 | Deutsche Thomson-Brandt Gmbh, 7730 Villingen-Schwenningen | Fokus-regelung fuer ein geraet fuer plattenfoermige, rotierende informationstraeger |
US4748609A (en) * | 1985-03-29 | 1988-05-31 | Hitachi, Ltd. | Method and apparatus for composite tracking servo system with track offset correction and rotary optical disc having at least one correction mark for correcting track offset |
US4959823A (en) * | 1985-07-30 | 1990-09-25 | Laser Magnetic Storage International Company | Tracking and seeking system for use with an optical record carrier having a wobbled track format |
US4879708A (en) * | 1985-07-30 | 1989-11-07 | Laser Magnetic Storage International Company | Optical disk tracking and seeking systems specific track formats using wobbled pits |
EP0215556B1 (fr) * | 1985-07-30 | 1993-01-13 | Koninklijke Philips Electronics N.V. | Support d'enregistrement et circuit générateur de signaux d'alignement |
US4879707A (en) * | 1985-07-30 | 1989-11-07 | Laser Magnetic Storage International Company | Optical disk tracking and seeking systems specific track formats using discontinuities |
US5161243A (en) * | 1986-01-21 | 1992-11-03 | Matsushita Electric Industrial Co., Ltd. | Tracking system for an optical recording/reproducing apparatus having a plurality of light spots |
JPS62271235A (ja) * | 1986-05-20 | 1987-11-25 | Matsushita Electric Ind Co Ltd | 光学記録再生装置 |
JPS62293522A (ja) * | 1986-06-13 | 1987-12-21 | Pioneer Electronic Corp | 記録デイスク再生装置 |
US4789974A (en) * | 1986-09-16 | 1988-12-06 | Matsushita Electric Industrial Co., Ltd. | Optical information recording/reproducing apparatus |
US5258968A (en) * | 1986-12-11 | 1993-11-02 | Pioneer Electronic Corporation | Tracking error signal generating device for preventing offset of the generated tracking error signal |
JPS63213126A (ja) * | 1987-02-27 | 1988-09-06 | Nec Corp | 光デイスク装置 |
US5031166A (en) * | 1988-01-25 | 1991-07-09 | Laser Magnetic Storage International Company | Optical disk tracking and seeking systems and specific track formats using discontinuities and circuitry therefor |
JPH077510B2 (ja) * | 1988-05-31 | 1995-01-30 | アルプス電気株式会社 | 光学式ピックアップにおけるビームスプリッタの固定構造 |
JPH0594628A (ja) * | 1991-04-30 | 1993-04-16 | Fuji Xerox Co Ltd | 光学的記録再生装置 |
EP0911712A1 (fr) * | 1997-10-21 | 1999-04-28 | Deutsche Thomson-Brandt Gmbh | Signal de commande corrigé dans un servomécanisme |
EP0911713B1 (fr) * | 1997-10-21 | 2004-09-22 | Deutsche Thomson-Brandt Gmbh | Signal de commande corrigé dans une boucle de commande |
JP4253204B2 (ja) * | 2003-03-31 | 2009-04-08 | クラリオン株式会社 | フォーカス制御装置及び制御方法並びにフォーカス制御用プログラム |
US8199620B2 (en) * | 2008-08-14 | 2012-06-12 | Mediatek Inc. | Method for performing servo defect compensating operation by compensating servo-related signal derived from reading optical medium and related optical disc drive system with DSP |
JP5736999B2 (ja) | 2011-06-21 | 2015-06-17 | 富士通株式会社 | ピーク抑圧装置、ピーク抑圧方法、および無線通信装置 |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3278866A (en) * | 1959-10-23 | 1966-10-11 | Amar G Bose | Selective transmission |
US3424402A (en) * | 1966-11-23 | 1969-01-28 | Bendix Corp | Flight control system for a space vehicle |
DE2344293C2 (de) * | 1973-09-03 | 1983-01-13 | Robert Bosch Gmbh, 7000 Stuttgart | Anordnung zum Spurführen von gleisfreien Fahrzeugen |
NL7600479A (nl) * | 1976-01-19 | 1977-07-21 | Philips Nv | Automatisch optisch focusseersysteem. |
CA1131361A (fr) * | 1977-05-11 | 1982-09-07 | Fumitaka Kotaka | Servomecanisme de focalisation pour afficheur optique |
GB1603596A (en) * | 1977-06-06 | 1981-11-25 | Mca Disco Vision | Optical transducer and focusing system |
US4151471A (en) * | 1977-11-04 | 1979-04-24 | Burns Richard C | System for reducing noise transients |
NL8103117A (nl) * | 1981-06-29 | 1983-01-17 | Philips Nv | Inrichting voor het beschrijven en/of uitlezen van een registratiedrager. |
JPS5538639A (en) * | 1978-09-07 | 1980-03-18 | Pioneer Video Corp | Servo drawing-in unit for focus lens of optical information reader |
US4243850A (en) * | 1979-02-07 | 1981-01-06 | Eastman Kodak Company | Apparatus for tracking a record track on a video disc |
NL7904724A (nl) * | 1979-06-18 | 1980-12-22 | Philips Nv | Optische aftastinrichting met fokusseerstelsel. |
JPS626580Y2 (fr) * | 1979-11-17 | 1987-02-16 | ||
US4385373A (en) * | 1980-11-10 | 1983-05-24 | Eastman Kodak Company | Device for focus and alignment control in optical recording and/or playback apparatus |
US4381557A (en) * | 1980-12-19 | 1983-04-26 | Rca Corporation | Optical focus sensor |
US4414655A (en) * | 1981-03-31 | 1983-11-08 | Discovision Associates | Scanning beam control system |
JPS57181433A (en) * | 1981-04-22 | 1982-11-08 | Olympus Optical Co Ltd | Tracking system for optical disc reproducer |
-
1983
- 1983-01-27 NL NL8300291A patent/NL8300291A/nl not_active Application Discontinuation
- 1983-04-22 US US06/487,781 patent/US4613961A/en not_active Expired - Fee Related
-
1984
- 1984-01-14 DE DE19843401138 patent/DE3401138A1/de not_active Withdrawn
- 1984-01-23 GB GB08401706A patent/GB2134289B/en not_active Expired
- 1984-01-25 BE BE0/212276A patent/BE898754A/fr not_active IP Right Cessation
- 1984-01-25 FR FR8401129A patent/FR2540272B1/fr not_active Expired
- 1984-01-25 JP JP59010357A patent/JPS59144050A/ja active Pending
- 1984-01-26 CA CA000446074A patent/CA1213051A/fr not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS59144050A (ja) | 1984-08-17 |
CA1213051A (fr) | 1986-10-21 |
GB8401706D0 (en) | 1984-02-22 |
GB2134289B (en) | 1986-07-30 |
NL8300291A (nl) | 1984-08-16 |
GB2134289A (en) | 1984-08-08 |
US4613961A (en) | 1986-09-23 |
DE3401138A1 (de) | 1984-08-02 |
FR2540272A1 (fr) | 1984-08-03 |
BE898754A (fr) | 1984-07-25 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |