Patent JPS5280802A successfully refreshed from Google Patents.
JPS5280802A
Expired / Lapsed
JP
⏱️ 0.0 years remaining
Optical type information recording and reproduction apparatus
Assignee: Panasonic Holdings Corp
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Filing: 1975-12-26
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Granted: —
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Expires: 1995-12-26
Abstract
Abstract PURPOSE: To make loop gain constant and stabilize a focus control system by changing over the amplification factor of a condensing lens drive unit at the recording and reproducing at the time of condensing incident light by means of a condensing lens on a recording medium. COPYRIGHT: (C)1977,JPO&Japio
Inventors
- 👤 Masahiro Deguchi
- 👤 Mitsuro Moriya
Bibliographic Details
Application Number
—
Jurisdiction
JP
Data Source
google_patents
Last Synchronized
2026-11-09 20:57
CPC Classifications
—
Claims Analysis
Total Claims: 0
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