Boots – shoes – and leggings
Patent
1991-06-12
1993-06-08
Nguyen, Long T.
Boots, shoes, and leggings
G06F 738
Patent
active
052185613
ABSTRACT:
In an apparatus for carrying out a linear transform calculation on a product signal produced by multiplying a predetermined transform window function and an apparatus input signal, an FFT part (23) carries out fast Fourier transform on a processed signal produced by processing the product signal in a first processing part (21). As a result, the FFT part produces an internal signal which is representative of a result of the fast Fourier transform. A second processing part (22) processes the internal signal into a transformed signal which represents a result of the linear transform calculation. The apparatus is applicable to either of forward and inverse transform units (11, 12).
REFERENCES:
H. Nussbaumer, "Fast Multidimensional Discrete Cosite Transforms", IBM Technical Disclosure Bulletin, vol. 23, No. 5, Oct. 1980, pp. 1976-1981.
H. Nussbaumer, "Improved Approach for the Computation of Multidimensional Cosine Transforms", IBM Technical Disclosure Bulletin, vol. 23, No. 10, Mar. 1981, pp. 4517-4521.
Schiller, N., "Overlapping Block Transform Image Coding Preserving Equal Number of Samples and Coefficients", SPIE vol. 1001 Visual Communications and Image Processing 1988, pp. 834-839.
NEC Corporation
Nguyen Long T.
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