JPS61158688U - - Google Patents
Info
- Publication number
- JPS61158688U JPS61158688U JP4197485U JP4197485U JPS61158688U JP S61158688 U JPS61158688 U JP S61158688U JP 4197485 U JP4197485 U JP 4197485U JP 4197485 U JP4197485 U JP 4197485U JP S61158688 U JPS61158688 U JP S61158688U
- Authority
- JP
- Japan
- Prior art keywords
- information recording
- signal marks
- recording disk
- concentric circles
- marks
- 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
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Optical Recording Or Reproduction (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4197485U JPS61158688U (en]) | 1985-03-22 | 1985-03-22 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4197485U JPS61158688U (en]) | 1985-03-22 | 1985-03-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61158688U true JPS61158688U (en]) | 1986-10-01 |
Family
ID=30552294
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4197485U Pending JPS61158688U (en]) | 1985-03-22 | 1985-03-22 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61158688U (en]) |
-
1985
- 1985-03-22 JP JP4197485U patent/JPS61158688U/ja active Pending
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