Digital-signal processing apparatus, digital-signal...

Details Digital-signal processing apparatus, digital-signal... Digital-signal processing apparatus, digital-signal...

2005-10-11

2010-02-09

Kim, Charles (Department: 2624)

Image analysis

Applications

Personnel identification

C708S400000

Reexamination Certificate

active

07660446

ABSTRACT:
A digital-signal processing apparatus in which the efficiency of processing data can be prevented uniformly. The apparatus includes: an extracting unit that extracts a part of real data input; a selecting unit that selects a data size from similar data sizes falling in a range, in accordance with the size of the extracted data, which is a reference value, and with data-decomposing conditions described in an algorithm that realizes fast Fourier transform; and an operation unit that decomposes the data extracted and having the selected size into data items, in accordance with the data-decomposing conditions, and that performs Fourier transform on each data item, thereby effecting convolution on the data item.

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patent: 2004/0120556 (2004-06-01), Kono et al.
Cooley and Tukey, “An Algorithm for the Machine Calculation of Complex Fourier Series” Mathemetics of Computation, vol. 19, pp. 297-301, Apr. 1965.
Kolba et al., “A Prime Factor FFT Algorithm Using High-Speed Convolution” IEEE Transactions on Acoustics, Speech, and Signal Processing, vol. ASSP-25, No. 4., pp. 281-294, Aug. 1977.
Cochran et al. “What Is the Fast Fourier Transform?” Proceedings of the IEEE, vol. 55, No. 10, pp. 1664-1674, Oct. 1967.

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