Dynamic information storage or retrieval – With servo positioning of transducer assembly over track... – Optical servo system
Reexamination Certificate
2011-06-28
2011-06-28
Young, Wayne R (Department: 2627)
Dynamic information storage or retrieval
With servo positioning of transducer assembly over track...
Optical servo system
C369S044110, C369S044160, C369S044210, C369S044220, C369S044320, C369S053190, C720S683000
Reexamination Certificate
active
07969828
ABSTRACT:
An optical pickup actuator independently drivable in focusing, tilting and tracking directions. The optical pickup includes a lens holder movably installed on a base, and mounted with an objective lens for transmitting an incident light to an optical information recording medium; and a magnetic circuit to independently driving the lens holder in the focusing, tilting and tracking directions. The magnetic circuit includes opposing magnets; a focusing coil and tilting coils interposed between the magnets, mounted inside the lens holder, and wound around respective axes parallel to the focusing direction; and a plurality of tracking coils mounted outside the lens holder, interposed between the magnets and wound around respective axes transverse to the focusing direction. The magnetic fields of the magnets are guided by outer yokes partially encompassing the magnets and inner yokes positioned within the focusing coil and the tilting coils.
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Office Action issued in Korean Patent Application No. 2005-31093 on Aug. 21, 2006.
Kim Seok-jung
Lee Moon-whan
Nam Do-hoan
Pae Jung-gug
Park Soo-han
Samsung Electronics Co,. Ltd.
Stanzione & Kim LLP
Yodichkas Aneeta
Young Wayne R
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