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:
Dec. 08, 1992
Filed:
Mar. 31, 1988
Henry M Darley, Plano, TX (US);
Other;
Abstract
A rounding circuit (10) for converting and rounding an M bit output from an adder array (12) into a N bit binary magnitude representation includes an incrementer (18) which increments the output of the adder array (12) prior to conversion. A borrow calculator (16) generates a select signal to a multiplexer indicating whether covnersion of the M bit number requires a borrow from the upper N bits. The select signal is used to choose between the incremented or non-incremented output. A converter/decrementer (22) converts the selected output of the multiplexer (20) into a binary magnitude number and also computes the magnitude representation decremented by one. A rounding circuitry (24) computes the rounding direction based on a control signal from control circuitry (26). The rounder circuit (10) calculates rounding information for two cases: (a) assuming that no normalization of the converted value is necessary and (b) assuming that normalization of the converted value is necessary. A selector/shifter (28) chooses between the decremented and non-decremented values based on the rounding information.