Dynamic information storage or retrieval – Specific detail of information handling portion of system – Radiation beam modification of or by storage medium
Reexamination Certificate
2011-07-12
2011-07-12
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
C369S124020, C369S044380, C369S044370, C369S053270, C369S053360
Reexamination Certificate
active
07978589
ABSTRACT:
A write analysis system is described for an optical drive, where the optical drive includes an optical storage medium. The write analysis system includes a filter that receives a reflected signal that is based on a reflection of a diffracted laser beam. The reflection of the diffracted laser beam includes a reflection of a first write signal. The filter generates a filtered signal by filtering the first write signal from the diffracted laser beam. The system also includes a read-back module that receives the filtered signal and that compares the filtered signal to a second write signal that was written to the optical storage medium prior to the first write signal.
REFERENCES:
patent: 5909418 (1999-06-01), Noda et al.
patent: 7301866 (2007-11-01), Kuroda et al.
Haley Joseph
Marvell International Ltd.
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