Digital base-10 logarithm converter

Abstract

A circuit (100) for performing base 10 logarithmic calculations of a binary signal in a digital system that optimizes accuracy of the calculation. The circuit comprises a priority encoder (108) for determining a most significant bit position of the binary number, with the most significant bit representing a base 2 logarithmic integer component of the input binary signal. A decimal selector (120) selects a predetermined number of bits to follow the base 2 logarithmic integer component determined by the priority encoder, with the predetermined number of bits representing a base 2 logarithmic fractional component following the integer component of the input binary signal. An adder (116) combines the integer component with the fractional component to thereby output a base 2 logarithmic value of the input binary signal. A multiplier (132) divides the base 2 logarithmic value of the input binary signal by a base 2 logarithmic value of 10 to thereby output a base 10 logarithmic value of the input binary signal.

Dependencies are inferred from the claim text.