| 发明名称 |
INFORMATION REPRODUCER |
| 摘要 |
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. |
| 申请公布号 |
JPS53135307(A) |
申请公布日期 |
1978.11.25 |
| 申请号 |
JP19770049552 |
申请日期 |
1977.04.28 |
| 申请人 |
MATSUSHITA ELECTRIC IND CO LTD |
发明人 |
KAMOGAWA TOSHIROU;ITOU KAZUYOSHI;NAGAOKA TADASHI |
| 分类号 |
G02B7/32;G02B7/28;G11B7/08;G11B7/09 |
主分类号 |
G02B7/32 |
| 代理机构 |
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代理人 |
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| 主权项 |
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| 地址 |
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