JPH0528571Y2 - - Google Patents
Info
- Publication number
- JPH0528571Y2 JPH0528571Y2 JP445787U JP445787U JPH0528571Y2 JP H0528571 Y2 JPH0528571 Y2 JP H0528571Y2 JP 445787 U JP445787 U JP 445787U JP 445787 U JP445787 U JP 445787U JP H0528571 Y2 JPH0528571 Y2 JP H0528571Y2
- Authority
- JP
- Japan
- Prior art keywords
- signal
- focus
- focus servo
- disk
- circuit
- 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 - Lifetime
Links
- 238000001514 detection method Methods 0.000 claims description 47
- 230000007547 defect Effects 0.000 claims description 31
- 230000003287 optical effect Effects 0.000 claims description 12
- 238000005259 measurement Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 7
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
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 |
|---|---|---|---|
| JP445787U JPH0528571Y2 (ko) | 1987-01-16 | 1987-01-16 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP445787U JPH0528571Y2 (ko) | 1987-01-16 | 1987-01-16 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63176924U JPS63176924U (ko) | 1988-11-16 |
| JPH0528571Y2 true JPH0528571Y2 (ko) | 1993-07-22 |
Family
ID=30785137
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP445787U Expired - Lifetime JPH0528571Y2 (ko) | 1987-01-16 | 1987-01-16 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0528571Y2 (ko) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0624011Y2 (ja) * | 1988-12-16 | 1994-06-22 | 三洋電機株式会社 | フォーカスサーボ制御回路 |
| JP2806559B2 (ja) * | 1989-06-09 | 1998-09-30 | オンキヨー株式会社 | 合焦装置および方法 |
-
1987
- 1987-01-16 JP JP445787U patent/JPH0528571Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63176924U (ko) | 1988-11-16 |
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