Dynamic information storage or retrieval – Specific detail of information handling portion of system – Radiation beam modification of or by storage medium
Reexamination Certificate
2011-06-28
2011-06-28
Psitos, Aristotelis (Department: 2627)
Dynamic information storage or retrieval
Specific detail of information handling portion of system
Radiation beam modification of or by storage medium
Reexamination Certificate
active
07969853
ABSTRACT:
A servo objective lens and a recording/reproducing objective lens are commonly held on a holder. The servo objective lens and the recording/reproducing objective lens are integrally displaced, thereby pulling servo light onto a servo layer. Upon the pulling, focus positions of recording light and reproducing light follow a focus position of the servo light. As a result, the focus positions of recording light and reproducing light are set close to the servo layer. Thereafter, an optical element for displacing the focus positions of recording light and reproducing light in the optical axis direction is driven to pull the recording light and the reproducing light onto a targeted recording layer.
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Machine translation of JP 5-225582.
International Search report dated May 13, 2008 for corresponding application No. PCT/JP2008/051794.
International Preliminary Report on Patentability for PCT/JP2008/051794, dated Aug. 27, 2009, pp. 1-10.
Matsumura Yoshiyuki
Nagatomi Kenji
Nakatani Morio
Takahashi Seiichiro
Ditthavong Mori & Steiner, P.C.
Psitos Aristotelis
Sanyo Electric Co,. Ltd.
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