Journal of the Korea Computer Industry Society (한국컴퓨터산업학회논문지)
- Volume 7 Issue 4
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- Pages.293-298
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- 2006
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- 1229-9650(pISSN)
Boolean Factorization Technique Using Two-cube Terms
2개의 곱항에서 공통인수를 이용한 논리 분해식 산출
Abstract
A factorization is an extremely important part of multi-level logic synthesis. The number of literals in a factored form is a good estimate of the complexity of a logic function, and can be translated directly into the number of transistors required for implementation. Factored forms are described as either algebraic or Boolean, according to the trade-off between run-time and optimization. A Boolean factored form contains fewer number of literals than an algebraic factored form. In this paper, we present a new method for a Boolean factorization. The key idea is to identify two-cube Boolean subexpression pairs from given expression. Experimental results on various benchmark circuits show the improvements in literal counts over the algebraic factorization based on Bryton's co-kernel cube matrix.
본 논문에서는 부울 분해식을 산출하기 위한 방법을 제시한다. SIS 1.2에서 사용되는 코커널 큐브 행렬은 코커널/커널들로부터 만들어지며, 이 행렬은 단지 대수 분해식만을 산출한다. 제안한 방법은 2개의 항에서 공통인수를 추출하고, 이들로부터 분해식 산출 행렬을 만들고 이로부터 부울 분해식을 산출하는 방법을 제안한다.
Keywords