Dynamic information storage or retrieval – Specific detail of information handling portion of system – Radiation beam modification of or by storage medium
Reexamination Certificate
2008-04-22
2010-06-15
Agustín, Peter Vincent (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
07738341
ABSTRACT:
A recording and reproducing apparatus includes a spatial-light-intensity modulating unit, a spatial-light-phase modulating unit, an optical system that transmits light and leads the light to a hologram recording medium, a converting unit that converts an input data sequence; an amplitude and phase controlling unit that controls, during recording, the spatial-light-intensity modulating unit and the spatial-light-phase modulating unit to generate a signal light and a reference light, and controls, during reproduction, light intensity of each of pixels in a reference light area and a signal light area and controls a phase of each of the pixels, an image-signal acquiring unit that receives the reproduced image and the DC light and obtains two kinds of image signals, a difference calculating unit that calculates a difference between the two kinds of image signals, and a decoding unit that decodes data formed by a combination of the two kinds of values.
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Fukumoto Atsushi
Hara Masaaki
Tanaka Kenji
Watanabe Kenjiro
Agustín Peter Vincent
K&L Gates LLP
Sony Corporation
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