Boots – shoes – and leggings
Patent
1990-06-01
1992-08-18
Nguyen, Long T.
Boots, shoes, and leggings
G06F 738
Patent
active
051405423
ABSTRACT:
A method for the arithmetical calculation of two-dimensional transforms including two time steps of multiplication and accumulation, of which the first step is assigned to the product of the data and of the coefficient matrices and the second step is assigned to the subsequent product by the transposed coefficient matrix. Moreover, preferably the data to be transformed and the corresponding coefficients are supplied to a first multiplication step in time succession, possibly after their storage in an appropriate memory. The device for the attainment of the method includes two multipliers with their corresponding accumulator, a random-access type memory for storing the data to be transformed and the transform coefficients, a multiplexer which receives the data first from the input and then from the memory and arranges them in a time succession for the supply to a first multiplier, and a shift register which receives the transform coefficients from the memory and arranges them for the supply to the second multiplier.
REFERENCES:
patent: 4554629 (1985-11-01), Smith, Jr.
patent: 4829465 (1989-05-01), Knauer et al.
patent: 4841464 (1989-06-01), Guichard et al.
patent: 4912668 (1990-03-01), Aubie et al.
Article published in The Institute of Electrical and Electronics Engineers, Inc., Oct. 1989, Entitled "The Matrix Transform Chip" by Sailesh K. Rao.
M. A. Haque, "A Two-Dimensional Fast Cosine Transform", IEEE Trans. on Acoustics, Speech, and Signal Processing, vol. ASSP-33, No. 6, Dec. 1985, pp. 1532-1539.
Lavorgna Mario
Poluzzi Rinaldo
Rizzotto Gianguido
Taliercio Michele
Nguyen Long T.
SGS - Thomson Microelectronics, S.r.l.
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