Dynamic information storage or retrieval – Specific detail of information handling portion of system – Radiation beam modification of or by storage medium
Reexamination Certificate
2011-03-22
2011-03-22
Haley, Joseph (Department: 2627)
Dynamic information storage or retrieval
Specific detail of information handling portion of system
Radiation beam modification of or by storage medium
C369S120000, C369S053220
Reexamination Certificate
active
07911919
ABSTRACT:
An information recording/reproducing device irradiates a signal light beam containing arbitrary two-dimensional information and a reference beam emitted from the same light source as the signal light beam to an arbitrary region of a hologram recording medium to record a first hologram. After the first hologram is recorded, the device changes the incident angle of the signal light beam with respect to the hologram recording medium and multiplex-records a second hologram, which is different from the first hologram, in the same region as the region in which the first hologram is recorded by irradiating a signal light beam whose incident angle has been changed and a reference beam substantially the same as the reference beam used when recording the first hologram while the device obtains at least a part of a diffracted beam from the first hologram simultaneously.
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International Search Report issued Jun. 19, 2007 in the International (PCT) Application No. PCT/JP2007/055097.
Kasazumi Ken'ichi
Sugita Tomoya
Haley Joseph
Panasonic Corporation
Wenderoth , Lind & Ponack, L.L.P.
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