4. Dynamic information storage or retrieval
  5. With servo positioning of transducer assembly over track...
  6. Optical servo system

Noriyoshi Ooyama

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Optical device for reading and writing data on a recording mediu

Dynamic information storage or retrieval – With servo positioning of transducer assembly over track... – Optical servo system
Patent

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Optical pickup device wherein the astigmatic converged beam spot

Radiant energy – Photocells; circuits and apparatus – Photocell controls its own optical systems
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Profile ID: LFUS-PAI-P-991985

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