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.

Date of Patent:
Mar. 05, 2019

Filed:

Apr. 14, 2017
Applicant:

Qualcomm Incorporated, San Diego, CA (US);

Inventor:

Hari Rao, San Diego, CA (US);

Assignee:

QUALCOMM Incorporated, San Diego, CA (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 7/502 (2006.01); G06F 7/505 (2006.01); G06F 7/506 (2006.01);
U.S. Cl.
CPC ...
G06F 7/502 (2013.01); G06F 7/505 (2013.01); G06F 7/506 (2013.01); G06F 2207/5063 (2013.01);
Abstract

A multi-bit adder apparatus comprising: a full adder stage configured to receive at least some of a plurality of least significant bits (LSBs) of first data and second data; and a half adder stage configured to receive at least some of a plurality of most significant bits (MSBs) of the first data and the second data; a carry generation stage coupled to the full adder stage and the half adder stage, wherein the carry generation stage includes at least one serial propagate-generate (PG) component; and a post summing stage coupled to the carry generation stage and the half adder stage and configured to generate a partial sum output of the first data and the second data, wherein a number of the at least some of the plurality of LSBs is different from a number of the at least some of the plurality of MSBs.


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