JPS53135307A - Information reproducer - Google Patents
Information reproducerInfo
- Publication number
- JPS53135307A JPS53135307A JP4955277A JP4955277A JPS53135307A JP S53135307 A JPS53135307 A JP S53135307A JP 4955277 A JP4955277 A JP 4955277A JP 4955277 A JP4955277 A JP 4955277A JP S53135307 A JPS53135307 A JP S53135307A
- Authority
- JP
- Japan
- Prior art keywords
- information reproducer
- controlling
- electro
- objective lens
- light transmission
- 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.)
- Granted
Links
Landscapes
- Automatic Focus Adjustment (AREA)
- Optical Recording Or Reproduction (AREA)
Abstract
PURPOSE: To obtain good reproduction signal by optically detecting the face run-out of a light transmission type flexible disc and performing focusing controlling by electro-magnetically controlling a condensing objective lens.
COPYRIGHT: (C)1978,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4955277A JPS5845095B2 (en) | 1977-04-28 | 1977-04-28 | information reproducing device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4955277A JPS5845095B2 (en) | 1977-04-28 | 1977-04-28 | information reproducing device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS53135307A true JPS53135307A (en) | 1978-11-25 |
JPS5845095B2 JPS5845095B2 (en) | 1983-10-07 |
Family
ID=12834347
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4955277A Expired JPS5845095B2 (en) | 1977-04-28 | 1977-04-28 | information reproducing device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5845095B2 (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5112203U (en) * | 1974-07-16 | 1976-01-29 | ||
JPS5143948A (en) * | 1974-08-08 | 1976-04-15 | Philips Nv |
-
1977
- 1977-04-28 JP JP4955277A patent/JPS5845095B2/en not_active Expired
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5112203U (en) * | 1974-07-16 | 1976-01-29 | ||
JPS5143948A (en) * | 1974-08-08 | 1976-04-15 | Philips Nv |
Also Published As
Publication number | Publication date |
---|---|
JPS5845095B2 (en) | 1983-10-07 |
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