Booth multiplier for trigonometric functions
US5684730A · kind A · utility
1Cited by
5References
20Claims
0Family size
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Key dates
| Filing date | Dec 13, 1995 |
| Grant date | Nov 4, 1997 |
| Priority date | — |
| Expiry date | Dec 13, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F1/0353
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.