JPS5369005A - Automatic focus controller - Google Patents
Automatic focus controllerInfo
- Publication number
- JPS5369005A JPS5369005A JP14434576A JP14434576A JPS5369005A JP S5369005 A JPS5369005 A JP S5369005A JP 14434576 A JP14434576 A JP 14434576A JP 14434576 A JP14434576 A JP 14434576A JP S5369005 A JPS5369005 A JP S5369005A
- Authority
- JP
- Japan
- Prior art keywords
- automatic focus
- focus controller
- constirution
- magnitude
- sensing
- 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
Abstract
PURPOSE: To positively perform focusing with a simple constirution by sensing the change in the magnitude of a read signal and generating the signal corresponding to the direction and amount of focus deviation from disc face.
COPYRIGHT: (C)1978,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14434576A JPS5369005A (en) | 1976-12-01 | 1976-12-01 | Automatic focus controller |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14434576A JPS5369005A (en) | 1976-12-01 | 1976-12-01 | Automatic focus controller |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5369005A true JPS5369005A (en) | 1978-06-20 |
Family
ID=15359938
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14434576A Pending JPS5369005A (en) | 1976-12-01 | 1976-12-01 | Automatic focus controller |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5369005A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59223960A (en) * | 1984-03-26 | 1984-12-15 | Matsushita Electric Ind Co Ltd | Optical recording medium |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS50132939A (en) * | 1974-04-05 | 1975-10-21 |
-
1976
- 1976-12-01 JP JP14434576A patent/JPS5369005A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS50132939A (en) * | 1974-04-05 | 1975-10-21 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59223960A (en) * | 1984-03-26 | 1984-12-15 | Matsushita Electric Ind Co Ltd | Optical recording medium |
JPH0480455B2 (en) * | 1984-03-26 | 1992-12-18 | Matsushita Electric Ind Co Ltd |
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