JPS5441883B2 - - Google Patents
Info
- Publication number
- JPS5441883B2 JPS5441883B2 JP9400076A JP9400076A JPS5441883B2 JP S5441883 B2 JPS5441883 B2 JP S5441883B2 JP 9400076 A JP9400076 A JP 9400076A JP 9400076 A JP9400076 A JP 9400076A JP S5441883 B2 JPS5441883 B2 JP S5441883B2
- 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
- Optical Recording Or Reproduction (AREA)
- Automatic Focus Adjustment (AREA)
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9400076A JPS5319806A (en) | 1976-08-09 | 1976-08-09 | Information reproducer |
| GB26176/77A GB1532345A (en) | 1976-06-25 | 1977-06-22 | Information play-back apparatus |
| NLAANVRAGE7707071,A NL187716C (nl) | 1976-06-25 | 1977-06-24 | Inrichting voor het optisch lezen van informatie in sporen van een registratiemedium. |
| FR7719366A FR2356333A1 (fr) | 1976-06-25 | 1977-06-24 | Dispositif de focalisation automatique pour appareil optique de reproduction d'informations, notamment pour disque video |
| DE2728624A DE2728624C2 (de) | 1976-06-25 | 1977-06-24 | Selbstfokussierende Vorrichtung zum Abtasten einer auf einem Aufzeichnungsmedium enthaltenen Informationsspur |
| US05/810,166 US4293944A (en) | 1976-06-25 | 1977-06-27 | Information play-back apparatus with astigmatic auto-focusing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9400076A JPS5319806A (en) | 1976-08-09 | 1976-08-09 | Information reproducer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5319806A JPS5319806A (en) | 1978-02-23 |
| JPS5441883B2 true JPS5441883B2 (hu) | 1979-12-11 |
Family
ID=14098125
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9400076A Granted JPS5319806A (en) | 1976-06-25 | 1976-08-09 | Information reproducer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5319806A (hu) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5690434A (en) * | 1979-12-19 | 1981-07-22 | Hitachi Ltd | Optical information reproducing device |
| JPS56159873U (hu) * | 1980-04-25 | 1981-11-28 | ||
| JPS573236A (en) * | 1980-06-10 | 1982-01-08 | Olympus Optical Co Ltd | Optical information reader |
| JPS57111837A (en) * | 1980-12-27 | 1982-07-12 | Olympus Optical Co Ltd | Signal detecting system of optical information reader |
| JPS58132892A (ja) * | 1982-01-30 | 1983-08-08 | 株式会社ニコン | 光電式エンコ−ダ装置 |
| JPS59131033U (ja) * | 1983-02-22 | 1984-09-03 | 株式会社小野測器 | 光電式トルク検出器 |
| JPS61164886U (hu) * | 1985-04-01 | 1986-10-13 | ||
| US5511050A (en) * | 1988-09-21 | 1996-04-23 | Hitachi, Ltd. | Focus error detecting method and optical head using the same |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5174353A (en) * | 1974-12-23 | 1976-06-28 | Sumitomo Shipbuild Machinery | Kokaikureenno tonguhonchitorikaeki |
-
1976
- 1976-08-09 JP JP9400076A patent/JPS5319806A/ja active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5174353A (en) * | 1974-12-23 | 1976-06-28 | Sumitomo Shipbuild Machinery | Kokaikureenno tonguhonchitorikaeki |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5319806A (en) | 1978-02-23 |