JPH0521697Y2 - - Google Patents
Info
- Publication number
- JPH0521697Y2 JPH0521697Y2 JP13648287U JP13648287U JPH0521697Y2 JP H0521697 Y2 JPH0521697 Y2 JP H0521697Y2 JP 13648287 U JP13648287 U JP 13648287U JP 13648287 U JP13648287 U JP 13648287U JP H0521697 Y2 JPH0521697 Y2 JP H0521697Y2
- Authority
- JP
- Japan
- Prior art keywords
- switch
- focus
- amplifier
- time
- capacitor
- 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
- 239000003990 capacitor Substances 0.000 claims description 17
- 238000007599 discharging Methods 0.000 claims 1
- 230000003287 optical effect Effects 0.000 description 14
- 230000007423 decrease Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
Landscapes
- Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13648287U JPH0521697Y2 (pt) | 1987-09-07 | 1987-09-07 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13648287U JPH0521697Y2 (pt) | 1987-09-07 | 1987-09-07 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6442514U JPS6442514U (pt) | 1989-03-14 |
| JPH0521697Y2 true JPH0521697Y2 (pt) | 1993-06-03 |
Family
ID=31397035
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13648287U Expired - Lifetime JPH0521697Y2 (pt) | 1987-09-07 | 1987-09-07 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0521697Y2 (pt) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4596284B2 (ja) * | 2008-05-26 | 2010-12-08 | ソニー株式会社 | 光ディスク装置及びフォーカス制御方法 |
| JP5077391B2 (ja) * | 2010-06-02 | 2012-11-21 | ソニー株式会社 | 光ディスク装置及びフォーカス制御方法 |
-
1987
- 1987-09-07 JP JP13648287U patent/JPH0521697Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6442514U (pt) | 1989-03-14 |
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