Dynamic information storage or retrieval – Specific detail of information handling portion of system – Radiation beam modification of or by storage medium
Reexamination Certificate
2011-08-16
2011-08-16
Edun, Muhammad N (Department: 2627)
Dynamic information storage or retrieval
Specific detail of information handling portion of system
Radiation beam modification of or by storage medium
C369S124010
Reexamination Certificate
active
08000207
ABSTRACT:
A method for reproducing a hologram includes: irradiating a recording disc with a first reference beam and a second reference beam, both having a parallel light flux, in different directions at a same incident angle to form a hologram having an unslanted grating pattern in which a grating vector is parallel to a light incident surface of the recording disc; irradiating the hologram with the first reference beam or the second reference beam to extract reproduced light; and detecting a position where an intensity of the reproduced light is maximum.
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Edun Muhammad N
Kabushiki Kaisha Toshiba
Turocy & Watson LLP
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