Dynamic information storage or retrieval – Specific detail of information handling portion of system – Radiation beam modification of or by storage medium
Reexamination Certificate
2011-07-19
2011-07-19
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, C369S044410
Reexamination Certificate
active
07983134
ABSTRACT:
A method and apparatus for recording/reproducing data is disclosed. The apparatus for recording/reproducing data comprises a diffraction element splitting light diffracted or reflected from a recording medium into a main beam and first and second sub beams, the main beam and the first and second sub beams having no interference from one another; a light-receiving part detecting the main beam and the first and second sub beams; and a controller controlling a position of the diffraction element based on at least one light capacity of the detected beams or the detected position.
REFERENCES:
patent: 2007/0189130 (2007-08-01), Anzai et al.
patent: 2009/0028035 (2009-01-01), Sano et al.
patent: WO 2006118082 (2006-11-01), None
Lee Je Jong
Lim Hyung Jun
Haley Joseph
Harness Dickey & Pierce
Lee Nicholas
LG Electronics Inc.
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