DK141184C - - Google Patents
Info
- Publication number
- DK141184C DK141184C DK79576A DK79576A DK141184C DK 141184 C DK141184 C DK 141184C DK 79576 A DK79576 A DK 79576A DK 79576 A DK79576 A DK 79576A DK 141184 C DK141184 C DK 141184C
- Authority
- DK
- Denmark
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
- G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
- G11B7/13—Optical detectors 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
- G11B7/004—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
- G11B7/08—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
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Recording Or Reproduction (AREA)
- Automatic Focus Adjustment (AREA)
- Holo Graphy (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NLAANVRAGE7502373,A NL177157C (nl) | 1975-02-28 | 1975-02-28 | Inrichting voor het uitlezen van een vlakke registratiedrager met een optisch uitleesbare informatiestruktuur. |
| NL7502373 | 1975-02-28 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| DK79576A DK79576A (da) | 1976-08-29 |
| DK141184B DK141184B (da) | 1980-01-28 |
| DK141184C true DK141184C (da) | 1980-07-07 |
Family
ID=19823273
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DK79576AA DK141184B (da) | 1975-02-28 | 1976-02-25 | Apparat til aflæsning af en plan registreringsbærer med en optisk læsbar informationsstruktur. |
Country Status (20)
| Country | Link |
|---|---|
| US (1) | US4006293A (da) |
| JP (1) | JPS574016B2 (da) |
| AR (1) | AR208585A1 (da) |
| AT (1) | AT347149B (da) |
| AU (1) | AU505234B2 (da) |
| BE (1) | BE838982A (da) |
| BR (1) | BR7601175A (da) |
| CA (1) | CA1072679A (da) |
| CH (1) | CH601888A5 (da) |
| DE (1) | DE2606006C3 (da) |
| DK (1) | DK141184B (da) |
| FR (1) | FR2302646A1 (da) |
| GB (1) | GB1533888A (da) |
| IT (1) | IT1057601B (da) |
| NL (1) | NL177157C (da) |
| NO (1) | NO760631L (da) |
| NZ (1) | NZ180117A (da) |
| PL (1) | PL106758B1 (da) |
| SE (1) | SE411601B (da) |
| ZA (1) | ZA76172B (da) |
Families Citing this family (40)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2325987A1 (fr) * | 1975-09-29 | 1977-04-22 | Thomson Brandt | Dispositif de lecture optique d'un enregistrement |
| JPS5274218A (en) * | 1975-12-17 | 1977-06-22 | Mansei Kogyo Kk | Device for controlling focal point of optical information reader |
| 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. |
| DE2652936C3 (de) * | 1976-11-22 | 1980-11-27 | Bts-Systementwicklungs Gmbh, 1000 Berlin | Audiovisuelles Wiedergabegerät |
| US4370679A (en) * | 1978-03-27 | 1983-01-25 | Discovision Associates | Gain correction system for videodisc player apparatus |
| US4358796A (en) * | 1978-03-27 | 1982-11-09 | Discovision Associates | Spindle servo system for videodisc player |
| SE7813460L (sv) * | 1978-03-27 | 1979-09-28 | Mca Disco Vision | Videoskivspelare |
| US4371899A (en) * | 1978-03-27 | 1983-02-01 | Discovision Associates | Time base error correction system for player |
| NL7803517A (nl) * | 1978-04-03 | 1979-10-05 | Philips Nv | Registratiedrager met een optisch uitleesbare fase- struktuur en inrichting voor het uitlezen. |
| NL7803969A (nl) * | 1978-04-14 | 1979-10-16 | Philips Nv | Opto-elektronisch fokusfout-detektiestelsel. |
| NL7805069A (nl) * | 1978-05-11 | 1979-11-13 | Philips Nv | Inrichting voor puntsgewijze aftasting van een infor- matievlak. |
| NL7904724A (nl) * | 1979-06-18 | 1980-12-22 | Philips Nv | Optische aftastinrichting met fokusseerstelsel. |
| US4349901A (en) * | 1980-06-20 | 1982-09-14 | Eastman Kodak Company | Apparatus and method for reading optical discs |
| US4484319A (en) * | 1980-09-19 | 1984-11-20 | Matsushita Electric Industrial Co., Ltd. | Apparatus for locating a track on disc-like optical information carriers |
| JPS57105828A (en) * | 1980-12-19 | 1982-07-01 | Matsushita Electric Ind Co Ltd | Optical disk recording and reproducing system |
| JPS57111838A (en) * | 1980-12-27 | 1982-07-12 | Olympus Optical Co Ltd | Optical information reader |
| JPS57187071U (da) * | 1981-05-25 | 1982-11-27 | ||
| 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 |
| US4464567A (en) * | 1981-06-30 | 1984-08-07 | Storage Technology Corporation | Photoelectric information and focus detector |
| JPS5856236A (ja) * | 1981-09-28 | 1983-04-02 | Hitachi Ltd | 光学的トラック位置検出装置およびそれを用いた光学的記録再生装置 |
| JPS59198542A (ja) * | 1983-04-26 | 1984-11-10 | Sony Corp | 光学デイスクプレ−ヤ |
| US4740940A (en) * | 1985-03-11 | 1988-04-26 | Matsushita Electric Industrial Co., Ltd. | Optical information read apparatus |
| JPH0640392B2 (ja) * | 1986-08-29 | 1994-05-25 | 三菱電機株式会社 | 光学式情報記録再生装置の集光スポツト位置検出装置 |
| JPH0777048B2 (ja) * | 1987-06-26 | 1995-08-16 | 三菱電機株式会社 | 記録媒体駆動装置 |
| US5179268A (en) * | 1987-07-22 | 1993-01-12 | Omron Tateisi Electronic Co. | Apparatus for detecting inclination of an optical card |
| EP0300481B1 (en) * | 1987-07-22 | 1994-12-07 | Omron Tateisi Electronics Co. | Apparatus for detecting inclination of optical card |
| EP0317224B1 (en) * | 1987-11-17 | 1993-08-04 | Matsushita Electric Industrial Co., Ltd. | Focus detection system for an optical disk drive using photo sensor elements in the far field of information pits |
| 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 |
| US5121371A (en) * | 1990-06-18 | 1992-06-09 | Bernoulli Optical Systems Company | Optical servo system for magnetic disk |
| US5677903A (en) * | 1991-03-25 | 1997-10-14 | U.S. Phillips Corporation | Multi-layer information storage system with improved aberration correction |
| JP3063805B2 (ja) * | 1991-02-25 | 2000-07-12 | オリンパス光学工業株式会社 | 光学式情報再生装置および記録媒体 |
| JP3157873B2 (ja) * | 1991-11-15 | 2001-04-16 | パイオニア株式会社 | 光ピックアップ装置における焦点制御装置 |
| US5406545A (en) * | 1992-07-31 | 1995-04-11 | Matsushita Electric Industrial Co., Ltd. | Servo pattern in an optical data storage medium for obtaining a tracking error signal |
| JP2563747B2 (ja) * | 1993-05-31 | 1996-12-18 | 松下電器産業株式会社 | 光学ディスク装置 |
| WO1997024717A1 (en) * | 1995-12-27 | 1997-07-10 | Philips Electronics N.V. | Device for scanning an optically readable record carrier |
| EP0845142A1 (en) * | 1995-12-27 | 1998-06-03 | Koninklijke Philips Electronics N.V. | Device for scanning an optically readable record carrier |
| US8638437B2 (en) | 2008-02-14 | 2014-01-28 | J.A. Woollam Co., Inc. | System and method of aligning a sample |
| US8064055B2 (en) * | 2008-02-14 | 2011-11-22 | J.A. Woollam Co., Inc. | System and method of aligning a sample |
| JP5207240B2 (ja) * | 2008-08-11 | 2013-06-12 | 学校法人金井学園 | 光記録再生媒体の焦点誤差検出方法、およびそれに用いる発光装置のビーム分割調節器 |
| US8983787B1 (en) | 2008-12-12 | 2015-03-17 | Martin M. Liphardt | Method of evaluating data quality |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2266932B1 (da) * | 1973-03-02 | 1977-09-02 | Thomson Brandt | |
| US3919465A (en) * | 1974-01-14 | 1975-11-11 | Zenith Radio Corp | Optical system for directly detecting spatially recorded signals |
-
1975
- 1975-02-28 NL NLAANVRAGE7502373,A patent/NL177157C/xx not_active IP Right Cessation
- 1975-04-16 US US05/568,727 patent/US4006293A/en not_active Expired - Lifetime
-
1976
- 1976-01-13 ZA ZA760172A patent/ZA76172B/xx unknown
- 1976-02-11 AR AR262205A patent/AR208585A1/es active
- 1976-02-14 DE DE2606006A patent/DE2606006C3/de not_active Expired
- 1976-02-25 CA CA246,519A patent/CA1072679A/en not_active Expired
- 1976-02-25 AU AU11405/76A patent/AU505234B2/en not_active Expired
- 1976-02-25 CH CH234276A patent/CH601888A5/xx not_active IP Right Cessation
- 1976-02-25 NZ NZ180117A patent/NZ180117A/xx unknown
- 1976-02-25 GB GB7415/76A patent/GB1533888A/en not_active Expired
- 1976-02-25 IT IT67434/76A patent/IT1057601B/it active
- 1976-02-25 NO NO760631A patent/NO760631L/no unknown
- 1976-02-25 DK DK79576AA patent/DK141184B/da unknown
- 1976-02-25 SE SE7602296A patent/SE411601B/xx not_active IP Right Cessation
- 1976-02-25 BR BR7601175A patent/BR7601175A/pt unknown
- 1976-02-26 PL PL1976187533A patent/PL106758B1/pl unknown
- 1976-02-26 AT AT142276A patent/AT347149B/de not_active IP Right Cessation
- 1976-02-26 BE BE164685A patent/BE838982A/xx not_active IP Right Cessation
- 1976-02-26 JP JP1948876A patent/JPS574016B2/ja not_active Expired
- 1976-02-27 FR FR7605470A patent/FR2302646A1/fr active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| BR7601175A (pt) | 1976-09-14 |
| NL177157C (nl) | 1985-08-01 |
| DE2606006B2 (de) | 1978-01-26 |
| IT1057601B (it) | 1982-03-30 |
| DK141184B (da) | 1980-01-28 |
| DE2606006A1 (de) | 1976-09-09 |
| SE411601B (sv) | 1980-01-14 |
| GB1533888A (en) | 1978-11-29 |
| PL106758B1 (pl) | 1980-01-31 |
| NO760631L (da) | 1976-08-31 |
| AU505234B2 (en) | 1979-11-15 |
| AR208585A1 (es) | 1977-02-15 |
| NZ180117A (en) | 1978-04-28 |
| BE838982A (fr) | 1976-08-26 |
| AT347149B (de) | 1978-12-11 |
| DE2606006C3 (de) | 1978-10-05 |
| DK79576A (da) | 1976-08-29 |
| JPS574016B2 (da) | 1982-01-23 |
| ATA142276A (de) | 1978-04-15 |
| CH601888A5 (da) | 1978-07-14 |
| CA1072679A (en) | 1980-02-26 |
| ZA76172B (en) | 1977-08-31 |
| SE7602296L (sv) | 1976-08-30 |
| NL177157B (nl) | 1985-03-01 |
| NL7502373A (nl) | 1976-08-31 |
| FR2302646B1 (da) | 1982-05-07 |
| AU1140576A (en) | 1977-09-01 |
| FR2302646A1 (fr) | 1976-09-24 |
| US4006293A (en) | 1977-02-01 |
| JPS51110214A (da) | 1976-09-29 |