Dynamic information storage or retrieval – Specific detail of information handling portion of system – Radiation beam modification of or by storage medium
Reexamination Certificate
2011-08-23
2011-08-23
Klimowicz, William J (Department: 2627)
Dynamic information storage or retrieval
Specific detail of information handling portion of system
Radiation beam modification of or by storage medium
C369S013280, C365S125000
Reexamination Certificate
active
08004950
ABSTRACT:
An optical pickup for recording a hologram by using an angle multiplexing method. An optical beam is separated into two beams, a signal beam and a reference beam having different convergence/divergence degrees, by using an optical component such as a diffraction lens. The signal and reference beams are made incident upon the same objective, and the optical component or the objective lens is moved in a direction perpendicular to an optical axis, to thereby realize angle multiplex recording. If an optical information recording medium is inclined, the optical component or the objective lens is moved along the direction along which the optical information recording medium moved to change an angle of the reference beam incident upon the optical information recording medium and compensate for degradation of a reproduction signal.
REFERENCES:
patent: 6281994 (2001-08-01), Horikoshi et al.
patent: 6909529 (2005-06-01), Curtis
patent: 2003/0095477 (2003-05-01), Horimai et al.
patent: 2004/0179251 (2004-09-01), Anderson et al.
patent: 2005/0088947 (2005-04-01), Ichihara et al.
patent: 2005/0231775 (2005-10-01), Kubota et al.
patent: 2004-272268 (2004-09-01), None
U.S. Appl. No. 60/905,838, filed Mar. 9, 2007, Shimada et al.
Ian Redmond : “Beam Delivery in Monocular Holographic Data Storage System”, Technical Digest ODS (2006), MA1.
The InPhase Professional Archive Drive OMA: Design and Function, Redmond et al, Technical Digest ODS (2006) MA1.
Anderson Ken E.
Curtis Kevin R.
Ide Tatsuro
Shimada Ken'ichi
Shimano Takeshi
Antonelli, Terry Stout & Kraus, LLP.
Hitachi , Ltd.
InPhase Technologies Inc.
Klimowicz William J
Sasinowski Andrew J
LandOfFree
Optical pickup, optical information recording 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 Optical pickup, optical information recording and..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical pickup, optical information recording and... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2756761