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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:
| Patent Number |
Title Of Patent |
Date Issued |
| 7596472 |
Device for synthesis of a composite digital signal with explicit control of the first three moments thereof |
Sep. 29, 2009 |
| 7577698 |
Fast fourier transform processor |
Aug. 18, 2009 |
| 7574313 |
Information signal processing by modification in the spectral/modulation spectral range representation |
Aug. 11, 2009 |
| 7555509 |
Parallel fast Fourier transformation method of concealed-communication type |
Jun. 30, 2009 |
| 7555511 |
Methods for addressing input data values of a Fast Fourier Transform (FFT) calculation |
Jun. 30, 2009 |
| 7552159 |
Transform calculation device |
Jun. 23, 2009 |
| 7552161 |
Multi-stream FFT for MIMO-OFDM systems |
Jun. 23, 2009 |
| 7552162 |
Receiver and communication method for digital multi-carrier communication |
Jun. 23, 2009 |
| 7543009 |
Fractional fourier transform convolver arrangement |
Jun. 2, 2009 |
| 7543010 |
Modular pipeline fast Fourier transform |
Jun. 2, 2009 |
| 7496618 |
System and method for a fast fourier transform architecture in a multicarrier transceiver |
Feb. 24, 2009 |
| 7486609 |
European digital audio broadcast receiver having a simply implementable fast fourier transform processor and an operation method therefor |
Feb. 3, 2009 |
| 7464127 |
Fast fourier transform apparatus |
Dec. 9, 2008 |
| 7461114 |
Fourier transform apparatus |
Dec. 2, 2008 |
| 7454452 |
Fast fourier transform operation with reduced cache penalty |
Nov. 18, 2008 |
| 7437395 |
FFT operating apparatus of programmable processors and operation method thereof |
Oct. 14, 2008 |
| 7437396 |
Apparatus and method for generating transforms |
Oct. 14, 2008 |
| 7430575 |
One-dimensional fourier transform program, method and apparatus |
Sep. 30, 2008 |
| 7428563 |
Apparatus and method for selectively performing Fast Hadamard Transform or Fast Fourier Transform |
Sep. 23, 2008 |
| 7428564 |
Pipelined FFT processor with memory address interleaving |
Sep. 23, 2008 |
| 7406494 |
Method of generating a cycle-efficient bit-reverse index array for a wireless communication system |
Jul. 29, 2008 |
| 7395293 |
Memory segmentation for fast fourier transform |
Jul. 1, 2008 |
| 7391632 |
Apparatus of selectively performing fast hadamard transform and fast fourier transform, and CCK modulation and demodulation apparatus using the same |
Jun. 24, 2008 |
| 7382718 |
Transmitting and receiving method for reducing distortion caused by a time-varying channel in an orthogonal frequency division multiplex system |
Jun. 3, 2008 |
| 7376173 |
Unambiguously encoding and decoding signals for wireless channels |
May. 20, 2008 |
| 7315877 |
Efficient implementation of a multidimensional fast fourier transform on a distributed-memory parallel multi-node computer |
Jan. 1, 2008 |
| 7315878 |
Fast Fourier transform device |
Jan. 1, 2008 |
| 7299252 |
Power saving zero pruning algorithm for fast fourier transform (FFT) circuitry |
Nov. 20, 2007 |
| 7284027 |
Method and apparatus for high speed calculation of non-linear functions and networks using non-linear function calculations for digital signal processing |
Oct. 16, 2007 |
| 7246143 |
Traced fast fourier transform apparatus and method |
Jul. 17, 2007 |
| 7233968 |
Fast fourier transform apparatus |
Jun. 19, 2007 |
| 7227902 |
Method and apparatus for digital channelisation and de-channelisation |
Jun. 5, 2007 |
| 7197095 |
Inverse fast fourier transform (IFFT) with overlap and add |
Mar. 27, 2007 |
| 7190735 |
Generating two signals having a mutual phase difference of 90.degree. |
Mar. 13, 2007 |
| 7184468 |
Method and system for implementing a conditional one's complement of partial address |
Feb. 27, 2007 |
| 7120659 |
Apparatus, methods, and computer program products for determining the coefficients of a function with decreased latency |
Oct. 10, 2006 |
| 7092429 |
Multi-pass frequency hop-acquisition correlator |
Aug. 15, 2006 |
| 7088791 |
Systems and methods for improving FFT signal-to-noise ratio by identifying stage without bit growth |
Aug. 8, 2006 |
| 7082451 |
Reconfigurable vector-FFT/IFFT, vector-multiplier/divider |
Jul. 25, 2006 |
| 7062523 |
Method for efficiently computing a fast fourier transform |
Jun. 13, 2006 |
| 7047268 |
Address generators for mapping arrays in bit reversed order |
May. 16, 2006 |
| 7035867 |
Determining redundancies in content object directories |
Apr. 25, 2006 |
| 7028063 |
Method and apparatus for a DFT/IDFT engine supporting multiple X-DSL protocols |
Apr. 11, 2006 |
| 7024443 |
Method and system for performing a fast-Fourier transform |
Apr. 4, 2006 |
| 7024442 |
Processing apparatus |
Apr. 4, 2006 |
| 7007056 |
Memory address generating apparatus and method |
Feb. 28, 2006 |
| 6993547 |
Address generator for fast fourier transform processor |
Jan. 31, 2006 |
| 6990062 |
Reduced complexity DMT/OFDM transceiver |
Jan. 24, 2006 |
| 6988117 |
Bit-reversed indexing in a modified harvard DSP architecture |
Jan. 17, 2006 |
| 6985919 |
Time-recursive lattice structure for IFFT in DMT application |
Jan. 10, 2006 |
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