Coded data generation or conversion – Converter compensation
Reexamination Certificate
2007-04-03
2007-04-03
Mai, Lam T. (Department: 2819)
Coded data generation or conversion
Converter compensation
C341S120000, C330S136000, C330S149000
Reexamination Certificate
active
11091014
ABSTRACT:
A method of compensating for nonlinear distortions in a digital signal comprises receiving the digital signal, generating a nominal phase shifted signal based on the digital signal, generating a modeled distortion signal based on the digital signal and the nominal phase shifted signal, subtracting the modeled distortion signal from the digital signal, and generating a compensated signal.A compensating system comprises an input interface configured to receive a digital signal having nonlinear distortion, and a distortion model coupled to the interface, configured to generate a nominal phase shifted signal based on the digital signal, generate a modeled distortion signal based on the digital signal and the nominal phase shifted signal, subtract the modeled distortion signal from the digital signal, and generate a compensated signal.
REFERENCES:
patent: 4435823 (1984-03-01), Davis et al.
patent: 4843583 (1989-06-01), White et al.
patent: 5182558 (1993-01-01), Mayo
patent: 5302909 (1994-04-01), Kettenis et al.
patent: 5532642 (1996-07-01), Takai
patent: 5535246 (1996-07-01), Beech
patent: 5685317 (1997-11-01), Sjostrom
patent: 5786728 (1998-07-01), Alinikula
patent: 6181754 (2001-01-01), Chen
patent: 6351227 (2002-02-01), Rudberg
patent: 6351740 (2002-02-01), Rabinowitz
patent: 6388518 (2002-05-01), Miyatani
patent: 6424275 (2002-07-01), Velazquez
patent: 6512417 (2003-01-01), Booth et al.
patent: 6538592 (2003-03-01), Yang et al.
patent: 6570514 (2003-05-01), Velazquez
patent: 6621340 (2003-09-01), Perthold et al.
patent: 6677820 (2004-01-01), Miyatani
patent: 6677821 (2004-01-01), Kusunoki et al.
patent: 6856191 (2005-02-01), Bartuni
patent: 6885323 (2005-04-01), Batruni
U.S. Appl. No. 60/556,663, filed Mar. 25, 2004, Roy G. Batruni.
U.S. Appl. No. 11/061,850, Batruni.
Frank, Walter A., “An Efficient Approximation to the Quadratic Volterra Filter and Its Application I Realtime Loudspeaker Linearization”, Universitat der Bundeswehr Munchen, D85577 Neubiberg Germany, no month, no year.
Frank, Walter A., “On the Equalization of Nonlinear Systems”, Universitat der Bundeswehr Munchen, Neubiberg, Germany, no month, no year.
Giannakis, Georgios B., “Blind Franctionally Spaced Equalization of Noisy FIR Channels: Direct and Adaptive Solutions”, IEEE Transactions on Signal Processing, vol. 45, No. 9, Sep. 1997.
Griffith, David W., Jr. et al, “Partially Decoupled Volterra Filters: Formulation and LMS Adaptation” Dept. of Electrical Engineering, University of Delaware, Newark, Delaware. no month, no year.
Schulz-Mirbach, Hanns, “Nonlinear Model-Based Analysis and Description of Images for Multimedia Applications”, Internal Report Jul. 1996, TU Hamburg-Harburg, Technische Informatik I, Oct. 1996.
Mai Lam T.
Optichron, Inc.
Van Pelt & Yi & James LLP
LandOfFree
Digital linearizing system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Digital linearizing system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Digital linearizing system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3753458