Exponential calculation device and decoding device
US6304890A · kind A · utility
6Cited by
8References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 3, 1999 |
| Grant date | Oct 16, 2001 |
| Priority date | — |
| Expiry date | Feb 3, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L19/0212
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A device of the present invention is an exponential calculation device for calculating x (a/b) (where a and b are each an integer constant) for a given input value of x. The device includes: an input control section for outputting a value of x', wherein x'=x when x.ltoreq.A (where A is a threshold value within a variable range of x) and x'=x/2 b when x>A; a core section for outputting a value of z'=x' (a/b); and an output control section for outputting a value of z, wherein z=z' when x.ltoreq.A and z=z'*2 a when x>A.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.