Booth multiplier for trigonometric functions

Details Booth multiplier for trigonometric functions Booth multiplier for trigonometric functions

1995-12-13

1997-11-04

Ngo, Chuong D.

Boots, shoes, and leggings

364760, 364721, G06F 752, G06F 102

Patent

active

056847300

ABSTRACT:
Circuit for multiplying data in accordance with a Booth algorithm, in which the coding of the control signals is adapted to the characteristics of symmetry of a trigonometric function. The values of the function which relate to a single quadrant are stored in a memory and a converter unit makes it possible to utilize the circuit whatever the quadrant. The values of the trigonometric function may be obtained through interpolation. Application to the calculations of Fourier transforms or DCT transforms.

REFERENCES:
patent: 4905177 (1990-02-01), Weaver, Jr. et al.
patent: 4975699 (1990-12-01), Frey
patent: 5113361 (1992-05-01), Damerow et al.
patent: 5276633 (1994-01-01), Fox et al.
patent: 5493581 (1996-02-01), Young et al.
"Parallel Architecture Modified Booth Multiplier" by A.R. Cooper, Msc.,PhD., IEE Proceedings, vol. 135, Pt. G., No. 3, Jun. 1988, pp. 125-128.

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