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Class Information
Number: 708/404
Name: Electrical computers: arithmetic processing and calculating > Electrical digital calculating computer > Particular function performed > Transform > Fourier > Fast fourier transform (i.e., fft)
Description: Subject matter wherein the transformation performed is a Fast Fourier Transform.










Patents under this class:
1 2 3 4 5 6 7

Patent Number Title Of Patent Date Issued
8706787 CORDIC-based FFT and IFFT apparatus and method Apr. 22, 2014
8693705 Response waveform synthesis method and apparatus Apr. 8, 2014
8688759 Efficient detection algorithm system for a broad class of signals using higher-order statistics in time as well as frequency domains Apr. 1, 2014
8682102 Cyclic noise removal in borehole imaging Mar. 25, 2014
8655104 Cyclic noise removal in borehole imaging Feb. 18, 2014
8634486 Signal receiving apparatus, signal receiving method and signal receiving program Jan. 21, 2014
8615538 Sub-filtering finite impulse response (FIR) filter for frequency search capability Dec. 24, 2013
8612504 IFFT processing in wireless communications Dec. 17, 2013
8612505 Minimum resource fast fourier transform Dec. 17, 2013
8606839 Interleaved method for parallel implementation of the fast fourier transform Dec. 10, 2013
8601046 Method and apparatus for calculating an N-point discrete fourier transform Dec. 3, 2013
8601045 Apparatus and method for split-radix-2/8 fast fourier transform Dec. 3, 2013
8601044 Discrete Fourier Transform in an integrated circuit device Dec. 3, 2013
8577946 Signal receiving apparatus and communication system Nov. 5, 2013
8572147 Method for implementing a bit-reversed increment in a data processing system Oct. 29, 2013
8572148 Data reorganizer for fourier transformation of parallel data streams Oct. 29, 2013
8572149 Apparatus and methods for dynamic data-based scaling of data such as staged fast fourier transform (FFT) while enhancing performance Oct. 29, 2013
8549059 In-place fast fourier transform processor Oct. 1, 2013
8549058 Multi-dimensional transform for distributed memory network Oct. 1, 2013
8549060 Concept for realistic simulation of a frequency spectrum Oct. 1, 2013
8543629 IFFT processing in wireless communications Sep. 24, 2013
8516027 Method and system for bit stacked fast Fourier transform Aug. 20, 2013
8510362 Apparatus and method for variable fast fourier transform Aug. 13, 2013
8481912 Robust spectral analyzer for one-dimensional and multi-dimensional data analysis Jul. 9, 2013
8484275 Reordering discrete fourier transform outputs Jul. 9, 2013
8458240 Signal processing with fast S-transforms Jun. 4, 2013
8458241 Memory address generating method and twiddle factor generator using the same Jun. 4, 2013
8438204 Apparatus for calculating an N-point discrete fourier transform May. 7, 2013
8417753 Pipelined FFT circuit and transform method thereof Apr. 9, 2013
8396913 Fast fourier transform architecture Mar. 12, 2013
8386552 Fourier transform processing and twiddle factor generation Feb. 26, 2013
8380331 Method and apparatus for relative pitch tracking of multiple arbitrary sounds Feb. 19, 2013
8375075 High-speed discrete fourier transform apparatus and method thereof Feb. 12, 2013
8370414 FFT-based parallel system with memory reuse scheme Feb. 5, 2013
8364736 Memory-based FFT/IFFT processor and design method for general sized memory-based FFT processor Jan. 29, 2013
8363540 Pilot signal in an FDMA communication system Jan. 29, 2013
8356064 Discrete Fourier transform calculation method and apparatus Jan. 15, 2013
8351525 Orthogonal frequency division multiplexing transmitting and receiving device Jan. 8, 2013
8346836 Apparatus and method for area and speed efficient fast fourier transform (FFT) processoring with runtime and static programmability of number of points Jan. 1, 2013
8325835 Non-continuous orthogonal frequency division multiplexing system and control method of non-continuous orthogonal frequency division multiplexing system Dec. 4, 2012
8326907 Method for establishing a simulating signal suitable for estimating a complex exponential signal Dec. 4, 2012
8316073 Optical processor Nov. 20, 2012
8283623 Robust spectral analyzer for one-dimensional and multi-dimensional data analysis Oct. 9, 2012
8279978 Pilot signal in an FDMA communication system Oct. 2, 2012
8275820 Variable length FFT system and method Sep. 25, 2012
8270625 Secondary path modeling for active noise control Sep. 18, 2012
8266196 Fast Fourier transform twiddle multiplication Sep. 11, 2012
8249202 Communication system, signal processing method, signal processing device, and movable body Aug. 21, 2012
8239436 Estimating a signal based on samples derived from dot products and random projections Aug. 7, 2012
8166088 Fast fourier transform processor Apr. 24, 2012

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