JPS6248299B2 - - Google Patents
Info
- Publication number
- JPS6248299B2 JPS6248299B2 JP8666182A JP8666182A JPS6248299B2 JP S6248299 B2 JPS6248299 B2 JP S6248299B2 JP 8666182 A JP8666182 A JP 8666182A JP 8666182 A JP8666182 A JP 8666182A JP S6248299 B2 JPS6248299 B2 JP S6248299B2
- Authority
- JP
- Japan
- Prior art keywords
- signal
- output
- focus
- information recording
- output signal
- 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
- 230000001747 exhibiting effect Effects 0.000 claims 1
- 238000006243 chemical reaction Methods 0.000 description 17
- 239000003990 capacitor Substances 0.000 description 8
- 238000010586 diagram Methods 0.000 description 6
- 238000001514 detection method Methods 0.000 description 5
- 230000003287 optical effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 1
- 230000001568 sexual effect Effects 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
- G11B7/0908—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 focusing only
Landscapes
- Automatic Focus Adjustment (AREA)
- Optical Recording Or Reproduction (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8666182A JPS58203639A (ja) | 1982-05-24 | 1982-05-24 | 情報読取装置におけるフオ−カスサ−ボ装置の動作判定回路 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8666182A JPS58203639A (ja) | 1982-05-24 | 1982-05-24 | 情報読取装置におけるフオ−カスサ−ボ装置の動作判定回路 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58203639A JPS58203639A (ja) | 1983-11-28 |
| JPS6248299B2 true JPS6248299B2 (pt) | 1987-10-13 |
Family
ID=13893211
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8666182A Granted JPS58203639A (ja) | 1982-05-24 | 1982-05-24 | 情報読取装置におけるフオ−カスサ−ボ装置の動作判定回路 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58203639A (pt) |
-
1982
- 1982-05-24 JP JP8666182A patent/JPS58203639A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58203639A (ja) | 1983-11-28 |
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