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. 09, 1997
Filed:
Jul. 05, 1995
J Arjun Prabhu, Palo Alto, CA (US);
Grzegorz B Zyner, San Jose, CA (US);
Sun Microsystems, Inc., Palo Alto, CA (US);
Abstract
In hardware SRT division and square root mantissa units maximal quotient selection overlapping for three quotient digits per cycle are used. An effective radix-8 implementation cascades three partial remainder computation circuits and overlaps three quotient selection circuits. Two carry save adders speculatively compute the possible resulting partial remainders corresponding to each possible value, -1, 0 , and +1, of the quotient digit by adding the divisor, not adding anything, and adding the two's complement of the divisor, respectively, thus shortening the critical path of a single SRT iteration producing a single quotient digit. The propagation delays of two carry save adders which speculatively compute the possible resulting partial remainders are masked by a longer delay through quotient selection logic.