US PATENT SUBCLASS 708 / 403
.~.~.~ Fourier

Current as of: June, 1999
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708 /   HD   ELECTRICAL COMPUTERS: ARITHMETIC PROCESSING AND CALCULATING

100  DF  ELECTRICAL DIGITAL CALCULATING COMPUTER {10}
200  DF  .~ Particular function performed {26}
400  DF  .~.~ Transform {4}
403.~.~.~ Fourier {6}
404  DF  .~.~.~.~> Fast Fourier Transform (i.e., FFT)
405  DF  .~.~.~.~> Discrete Fourier Transform (i.e., DFT)
406  DF  .~.~.~.~> Pipeline
407  DF  .~.~.~.~> Systolic
408  DF  .~.~.~.~> Radix greater than two
409  DF  .~.~.~.~> Butterfly circuit

DEFINITION

Classification: 708/403

Fourier:

(under subclass 400) Subject matter wherein the transformation performed is a mathematical operation which decomposes a time varying signal into its complex frequency components (amplitude and the phase or real and imaginary

components).

SEE OR SEARCH CLASS

382, Image Analysis,

280, for a Fourier transform performed on image data.