Inverse calculation apparatus and recording medium having stored thereon a program for executing inverse calculation
US6850960B2 · kind B2 · utility
1Cited by
7References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 21, 2003 |
| Grant date | Feb 1, 2005 |
| Priority date | — |
| Expiry date | Apr 21, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/122
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
In an inverse calculation, x is road out of a storage means, [x/2] is calculated and stored therein as b, a lent significant bit of b is stored as a, [(ax+b)/2] is calculated and stored as updated b, and low-order two bits of x are stored as y. Then, for i=1, 2, . . . , n−1, by is calculated, a is updated with −by, [(b+ax)/(2^(2i))] is calculated and stored as updated b, and y+a2^(2i) is calculated and stored as updated y, where y is road out as the result of inverse calculation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.