Optical: systems and elements – Optical computing without diffraction
Reexamination Certificate
2003-10-15
2008-09-09
Mehta, Bhavesh (Department: 2624)
Optical: systems and elements
Optical computing without diffraction
C382S212000, C714S752000, C714S759000, C714S777000
Reexamination Certificate
active
07423793
ABSTRACT:
A method for decoding a digital signal includes receiving a multiple-bit digital signal that includes information to be transmitted; arraying bit strings of the received multiple-bit digital signal to thereby generate a received signal image as a two-dimensional image; arraying all types of predetermined proper signals used for signals transmitted and bit strings of patterns including errors each derived from each proper signal to thereby generate a different two-dimensional image and disposing a set of received signal patterns, each comprised of an arbitrary proper signal and a group of two-dimensional images of patterns having the arbitrary proper signal added with an error, in a state that enables identification of each proper signal to thereby generate a received signal pattern image; using optical signal processing to evaluate a coefficient of correlation between the received signal image and the received signal pattern image to thereby obtain a correlation projection image in which depth and brightness intensity distribution is proportional to the coefficient of correlation; extrapolating transmitted proper signals from a region that includes a maximum point of the depth and brightness intensity distribution appearing in the correlation projection image based on a correspondence between the region and the set of received signal patterns in the received signal pattern image; and identifying transmitted information from the extrapolated proper signals.
REFERENCES:
patent: 3125683 (1964-03-01), Stewert et al.
patent: 4995090 (1991-02-01), Singh et al.
patent: 5129058 (1992-07-01), Mifune et al.
patent: 5668647 (1997-09-01), Nuss
patent: 5838650 (1998-11-01), Campbell et al.
patent: 5920536 (1999-07-01), Campbell et al.
patent: 6038073 (2000-03-01), Ono
patent: 6160656 (2000-12-01), Mossberg et al.
patent: 6216267 (2001-04-01), Mitchell
patent: 6275311 (2001-08-01), Boffi et al.
patent: 6313932 (2001-11-01), Roberts et al.
patent: 7130292 (2006-10-01), Turpin et al.
patent: 8-129149 (1996-05-01), None
patent: 2000-216681 (2000-08-01), None
patent: 2001-251244 (2001-09-01), None
Junpei Tsujiuchi, et al., “Optical Information Processing”, Dec. 1, 1982, pp. 106-109, (with English translation).
Eung Gi Paek, et al., “VanderLugt Correlator and Neural Networks”, Proc. IEEE Internat. Conference on Systems, Man and Cybernetics, XP-010091474, Nov. 14, 1989, pp. 408-414.
A. Vander Lugt, “Signal Detection By Complex Spatial Filtering”, IEEE Transactions on Information Theory, XP-001184740, vol. 10, Apr. 1964, pp. 139-145.
Takumi Minemoto, et al., “Implementation of image processing algorithms and modified signed-digit addition on a hybrid optical computing system”, Optical Computing and Processing, XP-000387737, vol. 3, No. 1 1993, pp. 39-52.
Lingfeng Yu, et al., “Parameterized multi-dimensional data encryption by digital optics”, Optics Communications, XP-004343746, vol. 203, No. 1-2, Mar. 1, 2002, pp. 67-77.
Feng Lin Zhang, “Image processing using hybrid systems and it's applications”, Porc., IEEE Conference on Systems, XP-010249411, Oct. 12, 1997, pp. 2995-3000.
J. Tsujiuchi, et al. Asakura Co., pp. 106-107, “Optical Signal Processing Principles”. (with English translation).
Motsinger Sean
National Institute of Information and Communication Technology
LandOfFree
Method and apparatus for decoding digital signal 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 and apparatus for decoding digital signal, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for decoding digital signal will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3982344