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With servo positioning of transducer assembly over track...
Optical servo system
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Actuator for optical pick-up and method of rolling driving...
Error signal detecting apparatus of optical pickup adopting holo
Light emitting module and compatible optical pickup device...
Optical pickup device capable of detecting stable error signal
Optical pickup movable to control beam shift and field angle...
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Profile ID: LFUS-PAI-P-1164938