JPH0226298B2 - - Google Patents
Info
- Publication number
- JPH0226298B2 JPH0226298B2 JP10281880A JP10281880A JPH0226298B2 JP H0226298 B2 JPH0226298 B2 JP H0226298B2 JP 10281880 A JP10281880 A JP 10281880A JP 10281880 A JP10281880 A JP 10281880A JP H0226298 B2 JPH0226298 B2 JP H0226298B2
- Authority
- JP
- Japan
- Prior art keywords
- vibration
- output
- spot
- frequency component
- focus
- 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
Landscapes
- Automatic Focus Adjustment (AREA)
- Optical Recording Or Reproduction (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10281880A JPS5727445A (en) | 1980-07-26 | 1980-07-26 | Optical reproducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10281880A JPS5727445A (en) | 1980-07-26 | 1980-07-26 | Optical reproducer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5727445A JPS5727445A (en) | 1982-02-13 |
| JPH0226298B2 true JPH0226298B2 (enExample) | 1990-06-08 |
Family
ID=14337603
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10281880A Granted JPS5727445A (en) | 1980-07-26 | 1980-07-26 | Optical reproducer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5727445A (enExample) |
-
1980
- 1980-07-26 JP JP10281880A patent/JPS5727445A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5727445A (en) | 1982-02-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2681933B2 (ja) | 記録再生装置 | |
| JPS6218975B2 (enExample) | ||
| US5742578A (en) | Information recording and reproducing apparatus using light beam modulation on a spiral guide groove disk | |
| JPH0438052B2 (enExample) | ||
| JPS6313264B2 (enExample) | ||
| US5260930A (en) | Optical information recording medium and reproducing apparatus for reproducing information from the medium | |
| JPH0226298B2 (enExample) | ||
| KR100200812B1 (ko) | 이동선속도 검출방법 및 그 장치 | |
| JPS61250846A (ja) | トラッキング制御装置 | |
| JPS6019569B2 (ja) | 光学式再生装置 | |
| JPS6017061Y2 (ja) | 光学式デイスク再生装置のフオ−カス制御回路 | |
| JPS6118811B2 (enExample) | ||
| JPS6019050B2 (ja) | 光学的再生装置 | |
| JPS61139950A (ja) | 光ヘツド | |
| KR100293522B1 (ko) | 광픽업장치 | |
| JPS6152533B2 (enExample) | ||
| JPS5992445A (ja) | 光学式記録再生装置 | |
| JPH05217196A (ja) | 光学ヘッド | |
| JPH05258320A (ja) | 焦点ずれ検出方法およびそれを用いた光情報処理装置 | |
| JPS6231039A (ja) | 光学式記録再生装置の光軸制御装置 | |
| JPH0622064B2 (ja) | 光学式記録再生装置 | |
| JPH06231482A (ja) | 光ディスク装置 | |
| JPS6248298B2 (enExample) | ||
| EP0361492A2 (en) | Apparatus for recording information on an optical disk | |
| JPS6353617B2 (enExample) |