JPS57136838A - Code converter - Google Patents

Abstract

PURPOSE:To eliminate the take-up and take-down of figure in the four rules of arithmetic of a coefficient caused by the four rules of arithmetic of a polynomial, by defining 2 as a divisor. CONSTITUTION:An input data series applied to a terminal 101 is set at A(x), and a selection register 105 stores A(x). A selector 103 selects with the timing 1 the data series A(x) supplied from the terminal 101 to the data series A(x) given from the terminal 101 as well as to the data series A(x) given from the register 105. A multiplier divider 104 converts the data series A(x) given from the selector 103 and the register 105 into A(x)<2>[modn(x)]and stores it in the register 105. After this, the selector 103 selects in the same way the data series A(x) given from ther terminal 101 to the data series A(x) from the terminal 101 plus the data series A(x)<2i0-i1>[modn(x)]with the timing i0+i1+1. The multiplier/divider 104 converts above-mentioned both data series into A(x)<2i0-i1+1>[modn(x)] to store it in the register 105.