Dynamic information storage or retrieval – Specific detail of information handling portion of system – Radiation beam modification of or by storage medium
Reexamination Certificate
2011-04-12
2011-04-12
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
Reexamination Certificate
active
07924680
ABSTRACT:
An optical information recording and reproducing apparatus for recording information on a recording medium by forming interference fringes generated by interference between an information beam and a reference beam on the recording medium and for reproducing the information by irradiating, with the reference beam, the recording medium, in which the interference fringes are formed. The apparatus includes a spatial light modulator for spatially modulating at least a portion of a light beam emitted from a light source into the information beam. A light sensing device reads the information beam extracted from the recording medium by the reference beam irradiated on the recording medium. A shift amount detector detects a shift of the irradiating position of the light beam entering the spatial light modulator, and a device corrects a positional shift between a position of an area for modulating the information beam and a position of the light beam in the spatial light modulator based on a positional shift amount detected by the shift amount detector.
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Japanese Office Action dated May 26, 2010, issued in counterpart Japanese patent application No. 2005-344379, with an English translation.
Hirogome, Hideyoshi, et al. “Holographic Medica Close to Takeoff, Realize 200 GB in 2006,” Nikkei Electronics, No. 891, Jan. 17, 2005, pp. 105-114, with English translation.
Ichikawa Takeshi
Sakaguchi Kiyofumi
Canon Kabushiki Kaisha
Fitzpatrick ,Cella, Harper & Scinto
Hindi Nabil Z
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