Patent ID: 6208946
Filing Date: 2001-03-27
Classification: G01R,G06F

Abstract:
A high-speed Fourier transform apparatus that performs a Fourier-transform using the operation equation of discrete Fourier transform, comprising:data number calculator to count a data number every time test data is acquired for each test point;Fourier transformer for executing operation for Fourier transform on a term common among a plurality of Fourier transform equations that is specified by said data number;a calculation result file that stores the calculation results produced by said Fourier transformer for the same order of term among said plurality of Fourier equations; andan adder that adds each calculation result stored in said calculation result file so that each and all of said plurality of Fourier transform equations show final solutions;wherein said calculation result file has storage areas corresponding to the number of said plurality of Fourier transform equations for storing a sum of said calculation results by adding previous calculation results to new calculation results for each term of Fourier equations obtained by said Fourier transformer.