JPS5250130B2 - - Google Patents
Info
- Publication number
- JPS5250130B2 JPS5250130B2 JP49020869A JP2086974A JPS5250130B2 JP S5250130 B2 JPS5250130 B2 JP S5250130B2 JP 49020869 A JP49020869 A JP 49020869A JP 2086974 A JP2086974 A JP 2086974A JP S5250130 B2 JPS5250130 B2 JP S5250130B2
- Authority
- JP
- Japan
- 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
Links
Landscapes
- Focusing (AREA)
- Automatic Focus Adjustment (AREA)
- Optical Recording Or Reproduction (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP49020869A JPS5250130B2 (en:Method) | 1974-02-20 | 1974-02-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP49020869A JPS5250130B2 (en:Method) | 1974-02-20 | 1974-02-20 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS50115546A JPS50115546A (en:Method) | 1975-09-10 |
| JPS5250130B2 true JPS5250130B2 (en:Method) | 1977-12-22 |
Family
ID=12039155
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP49020869A Expired JPS5250130B2 (en:Method) | 1974-02-20 | 1974-02-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5250130B2 (en:Method) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62107528U (en:Method) * | 1985-12-24 | 1987-07-09 |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5349404A (en) * | 1976-10-18 | 1978-05-04 | Fuji Telecasting Co Ltd | Device for compensating focus position variation for photoelectric reproducer |
| US4357533A (en) * | 1980-07-14 | 1982-11-02 | Discovision Associates | Focus detector for an optical disc playback system |
| JPS5856235A (ja) * | 1981-09-28 | 1983-04-02 | Hitachi Ltd | 光学的トラツク追跡装置 |
-
1974
- 1974-02-20 JP JP49020869A patent/JPS5250130B2/ja not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62107528U (en:Method) * | 1985-12-24 | 1987-07-09 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS50115546A (en:Method) | 1975-09-10 |