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:
Aug. 09, 1994
Filed:
Mar. 05, 1993
Applicant:
Inventors:
Steven C McMahan, Richardson, TX (US);
Lawrence H Hudepohl, Plano, TX (US);
Assignee:
Cyrix Corporation, Richardson, TX (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G06F / ;
U.S. Cl.
CPC ...
364787 ; 364786 ;
Abstract
A carry skip adder uses independent paths for propagating a skip carry bit and a carry-in bit. Propagation of the carry-in bit is inhibited during a first portion of the clock cycle to prevent spurious carry-in signals from affecting the operation. During this period, other logic functions may be performed, including calculation of the propagation bits and generate bits for each adder block.