Orthogonal transform processor

Details Orthogonal transform processor Orthogonal transform processor

1986-11-10

1988-07-26

Malzahn, David H.

Boots, shoes, and leggings

G06F 15332

Patent

active

047605430

ABSTRACT:
An orthogonal transform processor comprising a rotator circuit, a look-up table and a communicator circuit. The rotator circuit performs the complex multiplications required of a rotator, the necessary coefficients are supplied by the look-up table, and the communicator circuit is charged with the task of accepting input signals, supplying the rotator with the signals necessary for each iteration, and delivering the resultant output signals. The rotator is realized with a matrix of spatially adjacent interconnected multiplier and adder modules, where each module comprises a portion of each of the multipliers necessary in the rotator.

REFERENCES:
patent: 3988605 (1976-10-01), Guillou
patent: 4293920 (1981-10-01), Merola
patent: 4385363 (1983-05-01), Widergren et al.
patent: 4510578 (1985-04-01), Miyaguchi et al.
patent: 4528641 (1985-07-01), Burrows
patent: 4612626 (1986-09-01), Marchant
patent: 4679163 (1987-07-01), Arnould et al.
"A Discrete Fourier-Cosine Transform Chip", IEEE Journal on Selected Areas in Communications, vol. SAC-4, No. 1, 1986, pp. 49-61, by M. Vetterli et al.

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