Dynamic information storage or retrieval – Specific detail of information handling portion of system – Radiation beam modification of or by storage medium
Reexamination Certificate
2011-01-11
2011-01-11
Hindi, Nabil Z (Department: 2627)
Dynamic information storage or retrieval
Specific detail of information handling portion of system
Radiation beam modification of or by storage medium
C369S053230, C369S094000
Reexamination Certificate
active
07869330
ABSTRACT:
An optical disc apparatus reproducing information on the basis of a standing wave recorded on a disc-like volume type recording medium includes: a first focus position adjusting unit configured to adjust the position of a focus on which a first light beam focuses inside a recording layer inside the volume type recording medium in the optical axis direction of the first light beam; a second focus position adjusting unit configured to adjust the position of a focus on which a second light beam focuses inside the recording layer in the optical axis direction of the second light beam; a controller configured to control the first focus position adjusting unit and the second focus position adjusting unit; and first and second detectors configured to detect the first and second reproduction light beams.
REFERENCES:
patent: 7394745 (2008-07-01), Miyatake
patent: 7505389 (2009-03-01), Nishiwaki et al.
patent: 7576900 (2009-08-01), Lan et al.
U.S. Appl. No. 12/038,201, filed Feb. 27, 2008, Fujita, et al.
Fujita Goro
Saito Kimihiro
Hindi Nabil Z
Oblon, Spivak McClelland, Maier & Neustadt, L.L.P.
Sony Corporation
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