Division circuit using higher radices
US5177703A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 22, 1991 |
| Grant date | Jan 5, 1993 |
| Priority date | — |
| Expiry date | Nov 22, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F7/535
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A division circuit having a plurality of stages based on a repeat arithmetic operation method, with each stage having: a constant multiplier for multiplying a divisor by a predetermined constant multiple; a carry save type adder (CSA) for performing an addition operation between a dividend and the constant multiple value of the divisor provided from the constant multiplier, then for outputting a sum component and a carry component as a result of the addition operation; shifters for shifting the sum component and the carry component by a shift amount in accordance with a radix, respectively; a carry propagation adder (CPA) for performing an addition operation between the upper bits of the shifted sum component and the shifted carry component obtained by the shifter by predetermined bits; and comparators for outputting a part of a quotient having a plurality of bits by comparing the result obtained by the CPA and the constant multiple value of the divisor, then for determining the value of the constant multiple of the constant multiplier based on the comparison result. In the division circuit, the value of the constant multiple at the following constant multiplier is determined by th…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.