The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 04, 1996
Filed:
Nov. 23, 1993
Hideto Takano, Tokyo, JP;
NEC Corporatiion, , JP;
Abstract
A logarithm computing circuit for fixed point numbers is disclosed that has: a shift number detection circuit that inputs a number of a fixed point representation, detects a shift number of the inputted number for the purpose of dividing the inputted number into an exponent part and a mantissa part, calculates an exponent part from the shift number and a radix point position of the inputted number, subtracts 1 from the exponent part, and finally outputs the subtraction result as an integer part; a shift circuit that normalizes the inputted number by shifting the inputted number a number of bits equal to the shift number and generates a mantissa part that is equal to or above 0.5 and below 1; and a decimal-part computing circuit that converts the mantissa part to its logarithm to base 2, adds 1 to the conversion result and outputs the result as a decimal part.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile