JPH0142054B2 - - Google Patents
Info
- Publication number
- JPH0142054B2 JPH0142054B2 JP8593281A JP8593281A JPH0142054B2 JP H0142054 B2 JPH0142054 B2 JP H0142054B2 JP 8593281 A JP8593281 A JP 8593281A JP 8593281 A JP8593281 A JP 8593281A JP H0142054 B2 JPH0142054 B2 JP H0142054B2
- Authority
- JP
- Japan
- Prior art keywords
- light
- tracking error
- target object
- error signal
- disk
- 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
- 230000003287 optical effect Effects 0.000 claims description 18
- 238000000605 extraction Methods 0.000 claims description 10
- 238000001514 detection method Methods 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 11
- 238000000034 method Methods 0.000 description 6
- 230000003321 amplification Effects 0.000 description 4
- 238000003199 nucleic acid amplification method Methods 0.000 description 4
- 239000004065 semiconductor Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B17/00—Guiding record carriers not specifically of filamentary or web form, or of supports therefor
- G11B17/34—Guiding record carriers during transducing operation, e.g. for track following
-
- 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
Landscapes
- Length Measuring Devices By Optical Means (AREA)
- Optical Recording Or Reproduction (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8593281A JPS57199904A (en) | 1981-06-03 | 1981-06-03 | Inclination controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8593281A JPS57199904A (en) | 1981-06-03 | 1981-06-03 | Inclination controller |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57199904A JPS57199904A (en) | 1982-12-08 |
| JPH0142054B2 true JPH0142054B2 (en]) | 1989-09-08 |
Family
ID=13872526
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8593281A Granted JPS57199904A (en) | 1981-06-03 | 1981-06-03 | Inclination controller |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57199904A (en]) |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5848243A (ja) * | 1981-09-17 | 1983-03-22 | Mitsubishi Electric Corp | 光学的記録再生装置のトラツク追跡装置 |
| JPS58146036A (ja) * | 1982-02-23 | 1983-08-31 | Foster Denki Kk | 光学式情報再生装置 |
| JPS59189013U (ja) * | 1983-06-01 | 1984-12-14 | 三菱電機株式会社 | 圧縮機保持装置 |
| JPS6077028U (ja) * | 1983-11-02 | 1985-05-29 | パイオニア株式会社 | 光学式記録デイスクの再生装置 |
| JPS60143447A (ja) * | 1983-12-30 | 1985-07-29 | Sony Corp | 光学式デイスク・プレ−ヤ |
| JPS60142822U (ja) * | 1984-03-01 | 1985-09-21 | パイオニア株式会社 | 光学式デイスクプレ−ヤ |
| JPS6139943A (ja) * | 1984-08-01 | 1986-02-26 | Matsushita Electric Ind Co Ltd | 光学式デイスク再生装置 |
| JPS6139945A (ja) * | 1984-08-01 | 1986-02-26 | Matsushita Electric Ind Co Ltd | 光学式デイスク再生装置 |
| JPH0656667B2 (ja) * | 1985-01-09 | 1994-07-27 | 株式会社日立製作所 | 光学式記録再生装置 |
| NL8500592A (nl) * | 1985-03-04 | 1986-10-01 | Philips Nv | Electro-optische inrichting. |
| JPH077525B2 (ja) * | 1985-09-12 | 1995-01-30 | 松下電器産業株式会社 | 光ビ−ムの傾き補正装置 |
| JP2595213B2 (ja) * | 1986-10-15 | 1997-04-02 | 株式会社リコー | 対物レンズ位置調整方法 |
| US5264687A (en) * | 1987-06-23 | 1993-11-23 | Omron Tateisi Electronics, Co. | Optical card processing apparatus |
| US5179268A (en) * | 1987-07-22 | 1993-01-12 | Omron Tateisi Electronic Co. | Apparatus for detecting inclination of an optical card |
| JP3626644B2 (ja) | 1999-09-29 | 2005-03-09 | 松下電器産業株式会社 | 光ディスク装置およびそのスピンドルモータ取付方法 |
-
1981
- 1981-06-03 JP JP8593281A patent/JPS57199904A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57199904A (en) | 1982-12-08 |
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