Patents and Patent Applications

Issued Patents

• M. Liu, C. Zhou, K.K. Parhi, and C.H. Kim, "Stable Memory Cell Identification for Hardware Security," US Patent 11,769,548, Issued September 26, 2023

• X. Zhang and K.K. Parhi, "Reduced Complexity Modular Polynomial Multiplication for R-LWE Cryptosystems," US Patent 11,750,366, Issued September 5, 2023

• K.K. Parhi and S.V.S. Avvaru, "Feed-Forward XOR Physical Unclonable Functions," US Patent 11,374,774, Issued June 28, 2022

• M. Liu, C. Zhou, K.K. Parhi, C.H. Kim, "Stable memory cell identification for hardware security," US Patent 11,309,018, Issued April 19, 2022

• K.K. Parhi, and S. Koteshwara, "Dynamic functional Obfuscaion," US Patent 11,061,997, Issued July 13, 2021

• K.K. Parhi, and Z. Zhang, "Method and apparatus for prediction and detection of seizure activity," US Patent 10,426,365, Issued Oct. 1, 2019

• Y. Lao, K.K. Parhi, and C.H. Kim, "Robust device authentication," US Patent 10,235,517, Issued March 19, 2019

• J. Chen and K.K. Parhi, "System for FEXT Cancellation of Multi-Channel Transceivers with Precoding," US Patent 8,699,551, Issued April 15, 2014

• J. Chen and K.K. Parhi, "System for low complexity adaptive ECHO and NEXT cancellers," US Patent 8,600,039, Issued Dec. 3, 2013

• J. Chen and K.K. Parhi "System for MIMO equalization of multi-channel transceivers with precoding," US Patent 8,498,343, Issued July 30, 2013

• O.E. Agazzi, G. Ungerboeck, K.K. Parhi, C.A. Lutkemeyer, P. Vorenkamp, K.T. Chan, and M.H. Wakayama, "System and method for high speed communications using digital signal processing", US Patent 8,422,591, Issued April 16, 2013

• A.E. Cohen and K.K. Parhi "System for secure variable data rate transmission," US Patent 8,416,948, Issued April 9, 2013

• K.K. Parhi and Y. Gu, "System and Method for Low-Power Echo and NEXT Cancellers", US Patent 8,009,823, Issued August 30, 2011

• O.E. Agazzi, G. Ungerboeck, K.K. Parhi, C.A. Lutkemeyer, P. Vorenkamp, K.T. Chan, and M.H. Wakayama, "System and method for high speed communications using digital signal processing", US Patent 7,933,341, Issued April 26, 2011

• K.K. Parhi and Y. Gu, "High-Speed Precoders for Communications Systems", US Patent 7,769,099, Issued August 3, 2010

• S.M. Kim, K.K. Parhi, and R. Liu, "System and Method for Designing RS Based LDPC Code Decoder", US Patent 7,716,553, Issued May 11, 2010

• Y. Gu and K.K. Parhi, "Parallel Tomlinson Harashima Precoders", US Patent 7,693,233, Issued April 6, 2010

• A.E. Cohen and K.K. Parhi, "Low-Complexity Hybrid LDPC Code Encoder", US Patent 7,657,816, Issued Feb. 2, 2010

• K.K. Parhi and Y. Gu , "System and Method for MIMO Equalization for DSP Transceivers", US Patent 7,561,633, Issued July 14, 2009

• K.K. Parhi, "System and method for generating cyclic codes for error control in digital communications", US Patent 7,539,918, Issued May 26, 2009

• K.K. Parhi, J.-G. Chung, K.-C. Lee, K.-J. Cho, "Low-Error Fixed-Width Modified Booth Multiplier," US Patent 7,334,200, Feb. 19, 2008

• K.K. Parhi, "Pipelined Parallel Processing of Feedback Loops in a Digital Circuit", US Patent 7,333,580, Issued Feb. 19, 2008

• K.K. Parhi and J. Kong, "Low-Latency Architectures for High-Throughput Viterbi Decoders", US Patent 7,308,640, Issued December 11, 2007

• K.K. Parhi, "Pipelining of Multiplexor Loops in a Digital Circuit", US Patent 7,239,652, Issued July 3, 2007

• Z. Wang and K.K. Parhi, "Area-Efficient Parallel Turbo Decoding", US Patent 7,200,799, Issued April 3, 2007

• T. Zhang and K.K. Parhi, "LDPC Code and Encoder/Decoder Regarding Same", US Patent 7,120,856, Issued Oct. 10, 2006

• K.K. Parhi, J.-G. Chung and S.-M. Kim, "Low-Error Canonic-Signed-Digit Fixed-Width Multiplier, and Method for Designing Same", US Patent 7,080,115, Issued July 18, 2006

• K.K. Parhi, "Pipelined Add-Compare-Select Circuits and Methods, and Applications there of", US Patent 7,020,831, Issued March 28, 2006

• W. Freking and K.K. Parhi, "Systolic Ring Planarized Cylindrical Array Modular Multiplier", US Patent 7,010,561, Issued March 7, 2006

• K.K. Parhi, J.G. Chung, and K.J. Cho, "Low-Error Fixed-Width Modified Booth Multiplier", US Patent Number 6,978,426, Issued December 20, 2005

• W. Freking and K.K. Parhi, "Systolic Cylindrical Array Modular Multiplier", US Patent Numbber 6,907,440, Issued June 14, 2005

• K.K. Parhi, "System and Method for Generating Cyclic Codes for Error Control in Digital Communications", US Patent Number 6,895,545, Issued May 17, 2005

• W. Freking and K.K. Parhi, "Fast Parallel cascaded Array Modular Multiplier", U.S. Patent Number 6,892,215, Issued May 10, 2005

• R.A. Freking and K.K. Parhi, "Fast and Small Serial Huffman Decoder for Decoding at an Optimally High Rate", U.S. Patent Number 6,307,489, October 23, 2001

• R.A. Freking and K.K. Parhi, "Concurrent Method for Parallel Huffman Compression Coding and Other Variable Length Encoding and Decoding", U.S. Patent Number 6,304,197, October 16, 2001

• R.A. Freking and K.K. Parhi, "Fast and Small Serial Variable Length Encoder with an Optimally High Rate for Encoding Including Huffman Encoding", U.S. Patent Number 6,271,689, August 7, 2001

Pending Patent Applications

Abandoned Patent Applications

• M. Ayinala, M.J. Brown, and K.K. Parhi, "Parallel Pipelined Systems for Computing the Fast Fourier Transform," Patent Application 13/136927, Publication 20120041996, Published Feb. 16, 2012

• A.E. Cohen and K.K. Parhi, "System for Congestion Control in Packet Networks," Application 12/802271, Publication 20110299400, Published Dec. 8, 2011

• C. Cheng and K.K. Parhi, "Hardware-Efficient, Low-Latency Architectures for High Throughput Viterbi Decoders," Application 11/951822, Publication 20080109709, Published May 8, 2008

• J.-H. Lin and K.K. Parhi, "Parallelized Binary Arithmetic Coding," Application 11/367041, Publication 20060197689, Published Sept. 7, 2006

• K.K. Parhi and Y. Gu, "Pipelined Parallel Decision Feedback Decoders for High-Speed Communications Systems," Application 11/225825, Publication 20060056503, Published March 16, 2006

• K.K. Parhi and Y. Gu, "Interleaved Trellis Coded Modulation and Decoding," Application 10/897893, Publication 20050018786, Published Jan. 27, 2006