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

Sakashi Ohtaki

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Focus error detecting apparatus of optical pickup with a...

Dynamic information storage or retrieval – Specific detail of information handling portion of system – Radiation beam modification of or by storage medium
Reexamination Certificate

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Optical pickup

Optical: systems and elements – Diffraction – From grating
Reexamination Certificate

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Optical pickup

Radiant energy – Photocells; circuits and apparatus – Photocell controls its own optical systems
Reexamination Certificate

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Optical pickup including aberration correction lens assembly

Dynamic information storage or retrieval – Specific detail of information handling portion of system – Radiation beam modification of or by storage medium
Reexamination Certificate

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Optical pickup information reproducing apparatus and...

Dynamic information storage or retrieval – Specific detail of information handling portion of system – Radiation beam modification of or by storage medium
Reexamination Certificate

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Profile ID: LFUS-PAI-P-1518841

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