Method and apparatus for generating carry out signals
US5235539A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 12, 1990 |
| Grant date | Aug 10, 1993 |
| Priority date | — |
| Expiry date | Dec 12, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2207/5063
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A circuit for determining the carry out from the addition of two numbers independent of the determination of the sum of the two numbers including apparatus for determining a first carry out from each bit position for a carry in of a first value, apparatus for determining a second carry out from each bit position for a carry in of a second value, a plurality of apparatus for utilizing the first and second carry out values from two or more adjacent bit positions to produce a first carry out from each plurality of bit positions for a carry in of a first value, and second carry out from each plurality of bit positions for a carry in of a second value, and apparatus for selecting between the first and second values based on the actual values of the carry ins.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.