Dynamic information storage or retrieval – Specific detail of information handling portion of system – Radiation beam modification of or by storage medium
Reexamination Certificate
2007-12-25
2007-12-25
Hindi, Nabil (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
10782072
ABSTRACT:
A holographic recording medium includes a recording layer in which data are to be recorded as phase information of light by projecting a signal beam and a reference beam thereonto, a reflective surface disposed on the opposite side of the recording layer as viewed in the direction of signal beam and reference beam incidence on the holographic recording medium and formed with a convex pattern or a concave pattern having a trapezoidal cross-section, a minimum width of a convex surface of the convex pattern or a concave surface of the concave pattern being set equal to or larger than a beam spot diameter of the signal beam or the reference beam at a diffraction limit thereof. According to the thus constituted holographic recording medium, it is possible to easily remove noise light contained in a signal beam and a reference beam.
REFERENCES:
patent: 5377176 (1994-12-01), Redfield
patent: 5917798 (1999-06-01), Horimai et al.
patent: 7002891 (2006-02-01), Horimai
patent: 2002/0041561 (2002-04-01), Tsukamoto et al.
patent: 1 324 322 (2003-07-01), None
patent: 08-314361 (1996-11-01), None
patent: 11-202745 (1999-07-01), None
patent: 2002-123949 (2002-04-01), None
patent: WO 02/15176 (2002-02-01), None
Hindi Nabil
Seed IP Law Group PLLC
TDK Corporation
LandOfFree
Method for recording and reproducing holographic data and... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for recording and reproducing holographic data and..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for recording and reproducing holographic data and... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3867910