Optical information recording and reproducing apparatus and...

Details Optical information recording and reproducing apparatus and... Optical information recording and reproducing apparatus and...

2006-11-27

2009-12-29

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

07639587

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 reproducing the information by irradiating the recording medium with the reference beam, in which the interference fringes are formed. The apparatus includes a spatial light modulator for spatially modulating at least a portion of the light beam emitted from a light source into the information beam, a light sensing device that reads the information beam extracted from the recording medium by the reference beam irradiated on the recording medium, a shift amount detector that detects a shift of an irradiating position of the light beam entering the spatial light modulator, and a device that 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.

REFERENCES:
patent: 5949558 (1999-09-01), Psaltis et al.
patent: 6281993 (2001-08-01), Bernal et al.
patent: 7012722 (2006-03-01), Ogasawara
patent: 7116626 (2006-10-01), Woods et al.
patent: 2007/0146847 (2007-06-01), Sakaguchi et al.
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.

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