DK521982A - Apparat til optisk skandering af en pladeformet registreringsbaerer - Google Patents
Apparat til optisk skandering af en pladeformet registreringsbaerer Download PDFInfo
- Publication number
- DK521982A DK521982A DK521982A DK521982A DK521982A DK 521982 A DK521982 A DK 521982A DK 521982 A DK521982 A DK 521982A DK 521982 A DK521982 A DK 521982A DK 521982 A DK521982 A DK 521982A
- Authority
- DK
- Denmark
- Prior art keywords
- plateform
- recorder
- optical scanning
- scanning
- optical
- Prior art date
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
-
- 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
- G11B7/0941—Methods and circuits for servo gain or phase compensation during operation
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G3/00—Gain control in amplifiers or frequency changers
- H03G3/20—Automatic control
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL8105346A NL8105346A (US20110009641A1-20110113-C00116.png) | 1981-11-26 | 1981-11-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DK521982A true DK521982A (da) | 1983-05-27 |
Family
ID=19838450
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DK521982A DK521982A (da) | 1981-11-26 | 1982-11-23 | Apparat til optisk skandering af en pladeformet registreringsbaerer |
Country Status (13)
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60170039A (ja) * | 1984-02-14 | 1985-09-03 | Sanyo Electric Co Ltd | トラツキングサ−ボ装置 |
| JP2565485B2 (ja) * | 1984-09-14 | 1996-12-18 | オリンパス光学工業株式会社 | 光学的記録再生装置 |
| NL8501634A (nl) * | 1984-09-14 | 1986-04-01 | Philips Nv | Kamera voor televisie-, foto- respektievelijk filmopname uitgevoerd met een automatische fokusinstelinrichting. |
| DE3500671A1 (de) * | 1985-01-11 | 1986-07-17 | Deutsche Thomson-Brandt Gmbh, 7730 Villingen-Schwenningen | Lesevorrichtung zum optischen abtasten von auf einem beweglichen plattenfoermigen traeger aufgezeichneten informationen |
| JPH064414Y2 (ja) * | 1986-03-10 | 1994-02-02 | パイオニア株式会社 | トラツキング制御装置 |
| JPS6374126A (ja) * | 1986-09-17 | 1988-04-04 | Pioneer Electronic Corp | フオ−カスサ−ボ装置 |
| JPS6489034A (en) * | 1987-09-30 | 1989-04-03 | Matsushita Electric Ind Co Ltd | Optical disk drive controller |
| JP2911449B2 (ja) * | 1987-10-29 | 1999-06-23 | パイオニア株式会社 | 光学式情報読取装置 |
| US5396477A (en) * | 1988-09-21 | 1995-03-07 | Hitachi, Ltd. | Light spot positioning method and optical disc memory apparatus employing the same |
| US5233586A (en) * | 1990-02-16 | 1993-08-03 | Canon Kabushiki Kaisha | Servo control system for controlling tracking of an optical head on an optical disk |
| US5436880A (en) * | 1994-01-10 | 1995-07-25 | Eastman Kodak Company | Laser power control in an optical recording system using partial correction of reflected signal error |
| EP0777218B1 (en) * | 1995-12-06 | 2001-05-16 | Discovision Associates | Apparatus and method for focus control |
| US5689485A (en) * | 1996-04-01 | 1997-11-18 | Discovision Associates | Tracking control apparatus and method |
| WO1999031956A2 (en) * | 1997-12-19 | 1999-07-01 | Lsi Logic Corporation | Automated servo gain adjustment using fourier transform |
| US7522480B2 (en) | 2001-01-25 | 2009-04-21 | Dphi Acquisitions, Inc. | Digital tracking servo system with multi-track seek with an acceleration clamp |
| EP1751755A1 (en) * | 2004-05-12 | 2007-02-14 | Koninklijke Philips Electronics N.V. | Improved servo system, record carrier and playback device |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB536538A (en) * | 1939-11-24 | 1941-05-19 | Radio Transmission Equipment L | Improvements in thermionic amplifiers |
| DK72866C (da) * | 1943-03-19 | 1951-08-06 | Philips Nv | Forstærkerkobling til tilvejebringelse af konstant forstærkning. |
| US2974224A (en) * | 1956-08-28 | 1961-03-07 | Gilfillan Bros Inc | Apparatus for automatic gain control |
| NL7315419A (nl) * | 1973-11-10 | 1975-05-13 | Philips Nv | Inrichting voor het uitlezen van een schijfvor- mige registratiedrager. |
| US3932700A (en) * | 1974-02-04 | 1976-01-13 | Zenith Radio Corporation | Focus tracking registration for optical reproducing systems |
| AR205839A1 (es) * | 1974-09-30 | 1976-06-07 | Mca Disco Vision | Servodisposicion para recorrer opticamente y leer simultaneamente un canal de informacion almacenado en un disco de video |
| NL182258C (nl) * | 1976-01-28 | 1988-02-01 | Philips Nv | Inrichting voor het uitlezen van een vlakke registratiedrager met een optisch uitleesbare informatiestructuur. |
| JPS6032264B2 (ja) * | 1977-03-08 | 1985-07-26 | 松下電器産業株式会社 | 光学的再生装置 |
| JPS5827889B2 (ja) * | 1977-05-31 | 1983-06-13 | 日本ビクター株式会社 | サ−ボ回路のル−プ利得調整回路 |
| DE2724917A1 (de) * | 1977-06-02 | 1978-12-14 | Bosch Gmbh Robert | Einrichtung und schaltungsanordnung zur spurabtastung einer videoplatte |
| JPS5424605A (en) * | 1977-07-26 | 1979-02-24 | Mitsubishi Electric Corp | Optical type video disc apparatus |
| US4337534A (en) * | 1979-04-18 | 1982-06-29 | Discovision Associates | Solid state electro-optical track follower array |
| JPS6048809B2 (ja) * | 1979-10-16 | 1985-10-29 | パイオニアビデオ株式会社 | 情報読取装置におけるトラッキングサ−ボ引込装置 |
| NL8105347A (nl) * | 1981-11-26 | 1983-06-16 | Philips Nv | Inrichting voor het optisch aftasten van een schijfvormige registratiedrager. |
-
1981
- 1981-11-26 NL NL8105346A patent/NL8105346A/nl unknown
-
1982
- 1982-02-19 US US06/350,450 patent/US4482989A/en not_active Expired - Lifetime
- 1982-11-19 DE DE19823242784 patent/DE3242784A1/de active Granted
- 1982-11-22 JP JP57205344A patent/JPS58105438A/ja active Granted
- 1982-11-22 GB GB08233236A patent/GB2110433B/en not_active Expired
- 1982-11-23 AU AU90800/82A patent/AU552688B2/en not_active Ceased
- 1982-11-23 IT IT24388/82A patent/IT1153662B/it active
- 1982-11-23 KR KR8205285A patent/KR880002695B1/ko active
- 1982-11-23 DK DK521982A patent/DK521982A/da not_active Application Discontinuation
- 1982-11-24 ES ES517632A patent/ES8400641A1/es not_active Expired
- 1982-11-25 BE BE0/209567A patent/BE895139A/fr not_active IP Right Cessation
- 1982-11-25 CA CA000416404A patent/CA1193723A/en not_active Expired
- 1982-11-26 FR FR8219877A patent/FR2517153B1/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| NL8105346A (US20110009641A1-20110113-C00116.png) | 1983-06-16 |
| ES517632A0 (es) | 1983-10-16 |
| AU552688B2 (en) | 1986-06-12 |
| JPH0430093B2 (US20110009641A1-20110113-C00116.png) | 1992-05-20 |
| BE895139A (fr) | 1983-05-25 |
| DE3242784C2 (US20110009641A1-20110113-C00116.png) | 1991-06-20 |
| AU9080082A (en) | 1983-06-02 |
| ES8400641A1 (es) | 1983-10-16 |
| DE3242784A1 (de) | 1983-06-01 |
| KR880002695B1 (ko) | 1988-12-20 |
| FR2517153A1 (fr) | 1983-05-27 |
| IT8224388A0 (it) | 1982-11-23 |
| IT8224388A1 (it) | 1984-05-23 |
| CA1193723A (en) | 1985-09-17 |
| US4482989A (en) | 1984-11-13 |
| GB2110433B (en) | 1985-09-04 |
| GB2110433A (en) | 1983-06-15 |
| FR2517153B1 (fr) | 1987-11-13 |
| JPS58105438A (ja) | 1983-06-23 |
| KR840002794A (ko) | 1984-07-16 |
| IT1153662B (it) | 1987-01-14 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| AHS | Application shelved for other reasons than non-payment |