JPH028377B2 - - Google Patents
Info
- Publication number
- JPH028377B2 JPH028377B2 JP10599280A JP10599280A JPH028377B2 JP H028377 B2 JPH028377 B2 JP H028377B2 JP 10599280 A JP10599280 A JP 10599280A JP 10599280 A JP10599280 A JP 10599280A JP H028377 B2 JPH028377 B2 JP H028377B2
- Authority
- JP
- Japan
- Prior art keywords
- displacement
- optical system
- measured
- amount
- light beam
- 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 35
- 238000006073 displacement reaction Methods 0.000 claims description 34
- 238000001514 detection method Methods 0.000 claims description 10
- 238000005259 measurement Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 5
- 230000001678 irradiating effect Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 5
- 238000007796 conventional method Methods 0.000 description 1
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
Landscapes
- Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
- Optical Recording Or Reproduction (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10599280A JPS5733442A (en) | 1980-07-31 | 1980-07-31 | Following measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10599280A JPS5733442A (en) | 1980-07-31 | 1980-07-31 | Following measuring device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5733442A JPS5733442A (en) | 1982-02-23 |
| JPH028377B2 true JPH028377B2 (en]) | 1990-02-23 |
Family
ID=14422212
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10599280A Granted JPS5733442A (en) | 1980-07-31 | 1980-07-31 | Following measuring device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5733442A (en]) |
-
1980
- 1980-07-31 JP JP10599280A patent/JPS5733442A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5733442A (en) | 1982-02-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4611317A (en) | Optical disk apparatus | |
| JP2573301B2 (ja) | ディスク装置 | |
| JPH0551973B2 (en]) | ||
| KR950010419B1 (ko) | 코스 액추에이터 트랙킹 신호 발생 장치 | |
| JP2945120B2 (ja) | フォーカシング・エラー信号発生装置 | |
| WO1984003387A1 (en) | Apparatus for controlling tracking of recorded disc reproduction device | |
| JPH028377B2 (en]) | ||
| JPH10500524A (ja) | 光学フォーカシング調整デバイス | |
| JPH06103593A (ja) | 光ディスク用のアクセス及びトラッキング装置 | |
| US4926407A (en) | Optical data processor | |
| JPH11167730A (ja) | 光ディスク原盤記録装置および光ディスク原盤記録方法 | |
| JPS6071903A (ja) | 光ディスク検査装置 | |
| JPS586212B2 (ja) | 光学的記録再生装置 | |
| JPH0251009A (ja) | 面振れ量、反り角測定装置 | |
| JPS60182568A (ja) | 情報記録および／または読取手段の位置制御装置 | |
| JPH048327Y2 (en]) | ||
| JP2591344B2 (ja) | 光学的トラック追跡装置 | |
| KR0165597B1 (ko) | 광 디스크 재생시스템의 디스크 틸트 검출장치 | |
| JP2644850B2 (ja) | 焦点制御装置 | |
| JPS6220611B2 (en]) | ||
| JP2579763B2 (ja) | トラツキング制御装置 | |
| JP3313516B2 (ja) | 光ディスク制御装置 | |
| JPH0338646Y2 (en]) | ||
| JPH0339335B2 (en]) | ||
| JPH09196616A (ja) | ディスク状記録媒体の変位測定装置及び変位測定方法 |