DE69019566T2 - Einrichtung zur Spurverfolgung für Gerät für optische Scheiben. - Google Patents
Einrichtung zur Spurverfolgung für Gerät für optische Scheiben.Info
- Publication number
- DE69019566T2 DE69019566T2 DE1990619566 DE69019566T DE69019566T2 DE 69019566 T2 DE69019566 T2 DE 69019566T2 DE 1990619566 DE1990619566 DE 1990619566 DE 69019566 T DE69019566 T DE 69019566T DE 69019566 T2 DE69019566 T2 DE 69019566T2
- Authority
- DE
- Germany
- Prior art keywords
- optical disk
- tracking
- disk device
- tracking device
- 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 - Fee Related
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
- G11B7/135—Means for guiding the beam from the source to the record carrier or from the record carrier to the detector
- G11B7/1356—Double or multiple prisms, i.e. having two or more prisms in cooperation
-
- 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
- G11B7/085—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam into, or out of, its operative position or across tracks, otherwise than during the transducing operation, e.g. for adjustment or preliminary positioning or track change or selection
- G11B7/08547—Arrangements for positioning the light beam only without moving the head, e.g. using static electro-optical elements
- G11B7/08564—Arrangements for positioning the light beam only without moving the head, e.g. using static electro-optical elements using galvanomirrors
-
- 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
- G11B7/08—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
- G11B7/0943—Methods and circuits for performing mathematical operations on individual detector segment outputs
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mathematical Physics (AREA)
- Optical Recording Or Reproduction (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1056947A JP2651238B2 (ja) | 1989-03-09 | 1989-03-09 | 光記憶装置 |
JP1061530A JP2517104B2 (ja) | 1989-03-14 | 1989-03-14 | 光記憶装置のビ―ムトラック位置制御装置及び方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
DE69019566D1 DE69019566D1 (de) | 1995-06-29 |
DE69019566T2 true DE69019566T2 (de) | 1995-09-28 |
Family
ID=26397953
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE1990619566 Expired - Fee Related DE69019566T2 (de) | 1989-03-09 | 1990-03-07 | Einrichtung zur Spurverfolgung für Gerät für optische Scheiben. |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0387019B1 (de) |
DE (1) | DE69019566T2 (de) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5444684A (en) * | 1990-10-03 | 1995-08-22 | Fujitsu Limited | Seek control system of dual processor magneto-optic disk unit |
JP2583373B2 (ja) * | 1990-10-03 | 1997-02-19 | 富士通株式会社 | 光ディスク装置 |
US5499223A (en) * | 1990-10-03 | 1996-03-12 | Fujitsu Limited | Beam position control system of an optical disk unit |
EP0503096B1 (de) * | 1990-10-03 | 1996-12-27 | Fujitsu Limited | Kontrolliersystem der lichtstrahlpositionierung für optisches scheibegerät |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4074085A (en) * | 1976-03-31 | 1978-02-14 | Eli S. Jacobs | Multiple beam optical record playback apparatus for simultaneous scan of plural data tracks |
JPS5936338A (ja) * | 1982-08-24 | 1984-02-28 | Matsushita Electric Ind Co Ltd | 光デイスク記録再生方法 |
US4577301A (en) * | 1984-07-06 | 1986-03-18 | Storage Technology Partners Ii | Track pitch calibration error reduction |
-
1990
- 1990-03-07 EP EP19900302402 patent/EP0387019B1/de not_active Expired - Lifetime
- 1990-03-07 DE DE1990619566 patent/DE69019566T2/de not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
EP0387019A2 (de) | 1990-09-12 |
EP0387019A3 (de) | 1992-01-22 |
DE69019566D1 (de) | 1995-06-29 |
EP0387019B1 (de) | 1995-05-24 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE68922199T2 (de) | Einlegegerät für optische Platten. | |
DE3687274D1 (de) | Spurnachlaufverfahren fuer optische speicherplatte. | |
DE69020688D1 (de) | Optische Plattenaufzeichnungsvorrichtung. | |
DE69125543D1 (de) | Gerät für optische Platten | |
DE69016054D1 (de) | Optische Platte. | |
DE3889815D1 (de) | Wiedergabeanordnung für optische Platten. | |
DE3872926D1 (de) | Optische plattenaufzeichnungsvorrichtung. | |
DE69020293T2 (de) | Optische speicher-/wiedergabevorrichtung. | |
DE69018561D1 (de) | Optisches Plattengerät. | |
DE69021091D1 (de) | Spurenzählvorrichtung für optische Scheiben. | |
DE68915630D1 (de) | Medium für optische Scheiben. | |
DE69124148T2 (de) | Gerät für optische Platten | |
DE3679279D1 (de) | Optische platteneinheit mit einrichtung zur plattenpositionierung. | |
DE69023870D1 (de) | Spurfolgkreis für optische Scheibeeinheit. | |
DE69016303D1 (de) | Fokusjustierendes System für eine optische Platteneinheit. | |
DE69018904D1 (de) | Optisches Scheibengerät. | |
DE69021093T2 (de) | Abspielgerät für optische Platten. | |
DE632441T1 (de) | Haltevorrichtung für optische Platte. | |
DE69021338T2 (de) | Servoeinheit für optische Scheibe. | |
DE3883293T2 (de) | Kopfpositionierungseinrichtung für optische Platteneinheit. | |
DE69030060T2 (de) | Gerät für optische Platten | |
DE69017489T2 (de) | Optisches Gerät zur Datenwiedergabe. | |
DE69019566D1 (de) | Einrichtung zur Spurverfolgung für Gerät für optische Scheiben. | |
DE69019909T2 (de) | Fokussuchverfahren für optisches Plattengerät. | |
DE68924756T2 (de) | Gerät für optische Scheiben. |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8339 | Ceased/non-payment of the annual fee |