GB2156973B - Apparatus for reading optically recorded data from disk - Google Patents
Apparatus for reading optically recorded data from diskInfo
- Publication number
- GB2156973B GB2156973B GB08501593A GB8501593A GB2156973B GB 2156973 B GB2156973 B GB 2156973B GB 08501593 A GB08501593 A GB 08501593A GB 8501593 A GB8501593 A GB 8501593A GB 2156973 B GB2156973 B GB 2156973B
- Authority
- GB
- United Kingdom
- Prior art keywords
- disk
- recorded data
- optically recorded
- reading optically
- 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.)
- 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
- G11B7/095—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 discs, e.g. for compensation of eccentricity or wobble
- G11B7/0956—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 discs, e.g. for compensation of eccentricity or wobble to compensate for tilt, skew, warp or inclination of the disc, i.e. maintain the optical axis at right angles to the disc
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1984007434U JPS60120522U (ja) | 1984-01-23 | 1984-01-23 | 光学式記録情報読取装置 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB8501593D0 GB8501593D0 (en) | 1985-02-20 |
| GB2156973A GB2156973A (en) | 1985-10-16 |
| GB2156973B true GB2156973B (en) | 1987-03-25 |
Family
ID=11665757
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB08501593A Expired GB2156973B (en) | 1984-01-23 | 1985-01-22 | Apparatus for reading optically recorded data from disk |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US4636628A (en, 2012) |
| JP (1) | JPS60120522U (en, 2012) |
| DE (1) | DE3502138A1 (en, 2012) |
| GB (1) | GB2156973B (en, 2012) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0619845B2 (ja) * | 1986-09-26 | 1994-03-16 | ティアツク株式会社 | デイスク変動状態検出装置 |
| JP2565238B2 (ja) * | 1987-10-15 | 1996-12-18 | ソニー株式会社 | 光学式ディスク再生装置 |
| US5124973A (en) * | 1988-02-04 | 1992-06-23 | Pioneer Electronic Corporation | Tilt control mechanism |
| US5172361A (en) * | 1989-06-01 | 1992-12-15 | Sony Corporation | Disc loading apparatus |
| US4978841A (en) * | 1989-08-24 | 1990-12-18 | Lasa Industries, Inc. | Automatic leveling system and a method of leveling a workpiece based on focus detection |
| JP2606492B2 (ja) * | 1991-07-23 | 1997-05-07 | 三菱電機株式会社 | 光学式記録再生装置 |
| US5253236A (en) * | 1991-10-03 | 1993-10-12 | International Business Machines Corporation | Optical beam focusing and tracking system for an optical disk information storage device |
| KR950007129U (ko) * | 1993-08-17 | 1995-03-21 | 틸트 센서 출력에 의한 리프트 제어장치 | |
| US5696756A (en) * | 1995-04-14 | 1997-12-09 | Kabushiki Kaishia Toshiba | Optical disk having an evaluation pattern for evaluating the optical disk |
| GB2327123B (en) * | 1996-02-13 | 2000-09-13 | Amada Metrecs Co | Angle detection method for bending machines, and angle detection apparatus and angle sensor thereof |
| DE19731545C1 (de) * | 1997-07-23 | 1999-05-27 | Basler Gmbh | Vorrichtung und Verfahren zum optischen Erfassen der Verformung einer Fläche |
| JP2003317287A (ja) * | 2002-04-18 | 2003-11-07 | Ricoh Co Ltd | チルト検出装置、光ピックアップおよび光ディスク装置 |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5953612B2 (ja) * | 1975-11-19 | 1984-12-26 | カブシキガイシヤ フジテレビジヨン | コウデンシキサイセイホウホウ |
| DE3002736C2 (de) * | 1980-01-25 | 1982-08-12 | Polygram Gmbh, 2000 Hamburg | Anordnung zur Messung der vertikalen Verformung von Informationsträgern |
| JPS5799604A (en) * | 1980-12-12 | 1982-06-21 | Canon Inc | Focus detector |
| JPS57179954A (en) * | 1981-04-27 | 1982-11-05 | Sony Corp | Optical type disc player |
| JPS5814332A (ja) * | 1981-07-16 | 1983-01-27 | Mitsubishi Electric Corp | 光学式情報再生装置 |
| JPS58125242A (ja) * | 1982-01-22 | 1983-07-26 | Victor Co Of Japan Ltd | 光学的情報信号再生装置のトラツキング誤差検出方式 |
-
1984
- 1984-01-23 JP JP1984007434U patent/JPS60120522U/ja active Granted
-
1985
- 1985-01-22 GB GB08501593A patent/GB2156973B/en not_active Expired
- 1985-01-23 DE DE19853502138 patent/DE3502138A1/de active Granted
- 1985-01-23 US US06/694,195 patent/US4636628A/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| GB8501593D0 (en) | 1985-02-20 |
| US4636628A (en) | 1987-01-13 |
| JPS60120522U (ja) | 1985-08-14 |
| DE3502138A1 (de) | 1985-07-25 |
| DE3502138C2 (en, 2012) | 1987-10-29 |
| GB2156973A (en) | 1985-10-16 |
| JPH0433548Y2 (en, 2012) | 1992-08-11 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 746 | Register noted 'licences of right' (sect. 46/1977) | ||
| PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 19960122 |