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:
Sep. 08, 1992
Filed:
Nov. 21, 1991
Applicant:
Inventors:
LuVerne R Peterson, San Diego, CA (US);
Laurence P Flora, Valley Center, CA (US);
Assignee:
Unisys Corporation, Blue Bell, PA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G06F / ;
U.S. Cl.
CPC ...
364786 ;
Abstract
A digital adder module has a carry-in terminal, N pairs of data terminals, N sum terminals, and a carry-out terminal. A high-speed low-capacitance carry bypass signal path couples the carry-in terminal to the carry-out terminal. In one preferred embodiment, the capacitance of the bypass path is due solely to one transistor channel plus one transistor drain plus one internal logic gate plus interconnections between them.