Optical: systems and elements – Holographic system or element – For reconstructing image
Reexamination Certificate
2006-02-14
2006-02-14
Assaf, Fayez G. (Department: 2872)
Optical: systems and elements
Holographic system or element
For reconstructing image
C359S035000, C359S022000, C359S024000
Reexamination Certificate
active
06999214
ABSTRACT:
In an apparatus for detecting holographic data reproduced from a holographic medium, the holographic medium has an interference pattern and the holographic data is reproduced when a first portion of a reference beam is diffracted by the interference pattern within the holographic medium. A transmission beam detector detects a light intensity of a transmission beam which is a second portion of the reference beam, wherein the transmission beam is not diffracted to reproduce the holographic data and passes through the holographic medium. Then, a CCD (charge coupled device) controller generates a driving signal in accordance with the detected light intensity. Thereafter, a CCD detects the holographic data in response to the driving signal.
REFERENCES:
patent: 6118560 (2000-09-01), Stappaerts
patent: 6320657 (2001-11-01), Aspnes et al.
patent: 2003/0039000 (2003-02-01), Tanaka et al.
patent: 2363895 (2002-01-01), None
Assaf Fayez G.
Bacon & Thomas PLLC
Daewoo Electronics Corp.
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