Data processing: measuring – calibrating – or testing – Measurement system in a specific environment – Electrical signal parameter measurement system
Patent
1997-04-30
1999-03-30
Shah, Kamini S.
Data processing: measuring, calibrating, or testing
Measurement system in a specific environment
Electrical signal parameter measurement system
36472602, 36472607, G06F 1714
Patent
active
058900985
ABSTRACT:
In order to carry out FFT operations at a high speed, a configuration is adopted where, while a FFT (fast Fourier transform) operation or inverse FFT (inverse fast Fourier transform) operation is being carried out by performing a prescribed number of butterfly operations with the output of a butterfly operator being fed-back to the input of the butterfly operator, at least one of: a first storage part for storing data inputted to the butterfly operator; a second storage part for temporarily storing data outputted from the butterfly operator and feeding-back read-out data to an input of the butterfly operator; and a third storage part, for storing data that has undergone a butterfly operation a prescribed number of times, has a storage part, with the storage part comprising a plurality of divided storage parts.
REFERENCES:
Grajcar et al.; "The FFT butterfly operation in 4 processor cycles on a 24 bit fixed-point DSP with a pipelined multiplier.", IEEE International Conference on Acoustics, Speech, and Signal Processing. pp. 611-614, vol.. 1, of 5 Abstract only, Apr. 21, 1997.
Ikeda Yasunari
Ito Osamu
Kozaki Yasunari
Frommer William S.
Shah Kamini S.
Smid Dennis M.
Sony Corporation
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