JPH01138213U - - Google Patents
Info
- Publication number
- JPH01138213U JPH01138213U JP3244288U JP3244288U JPH01138213U JP H01138213 U JPH01138213 U JP H01138213U JP 3244288 U JP3244288 U JP 3244288U JP 3244288 U JP3244288 U JP 3244288U JP H01138213 U JPH01138213 U JP H01138213U
- Authority
- JP
- Japan
- Prior art keywords
- focus
- error signal
- focus error
- controlling
- optical head
- 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.)
- Pending
Links
- 230000003287 optical effect Effects 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims 1
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Optical Recording Or Reproduction (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3244288U JPH01138213U (sl) | 1988-03-10 | 1988-03-10 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3244288U JPH01138213U (sl) | 1988-03-10 | 1988-03-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01138213U true JPH01138213U (sl) | 1989-09-21 |
Family
ID=31258938
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3244288U Pending JPH01138213U (sl) | 1988-03-10 | 1988-03-10 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01138213U (sl) |
-
1988
- 1988-03-10 JP JP3244288U patent/JPH01138213U/ja active Pending