Dynamic information storage or retrieval – Control of storage or retrieval operation by a control... – Mechanism control by the control signal
Patent
1981-03-09
1985-12-03
Psitos, Aristotelis M.
Dynamic information storage or retrieval
Control of storage or retrieval operation by a control...
Mechanism control by the control signal
369 46, 369112, 369121, G11B 700, G11B 2110
Patent
active
045569657
ABSTRACT:
In an information recording apparatus for recording predetermined information on a recording medium by means of a laser beam, an optical system and a light detector are arranged for detecting a reflected version of the laser beam from the recording medium, whereby the focusing of the laser beam on the recording medium is automatically controlled.
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Miyauchi Toshimitsu
Shigematsu Kazuo
Tsunoda Yoshito
Hitachi , Ltd.
Psitos Aristotelis M.
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