JPS62190926U - - Google Patents
Info
- Publication number
- JPS62190926U JPS62190926U JP7623886U JP7623886U JPS62190926U JP S62190926 U JPS62190926 U JP S62190926U JP 7623886 U JP7623886 U JP 7623886U JP 7623886 U JP7623886 U JP 7623886U JP S62190926 U JPS62190926 U JP S62190926U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- photodetector
- tracking control
- systems
- difference
- 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
- 238000001514 detection method Methods 0.000 claims 2
- 238000000034 method Methods 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 |
|---|---|---|---|
| JP7623886U JPS62190926U (OSRAM) | 1986-05-22 | 1986-05-22 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7623886U JPS62190926U (OSRAM) | 1986-05-22 | 1986-05-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62190926U true JPS62190926U (OSRAM) | 1987-12-04 |
Family
ID=30923127
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7623886U Pending JPS62190926U (OSRAM) | 1986-05-22 | 1986-05-22 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62190926U (OSRAM) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02187931A (ja) * | 1989-01-13 | 1990-07-24 | Matsushita Electric Ind Co Ltd | トラッキング制御装置 |
-
1986
- 1986-05-22 JP JP7623886U patent/JPS62190926U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02187931A (ja) * | 1989-01-13 | 1990-07-24 | Matsushita Electric Ind Co Ltd | トラッキング制御装置 |
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