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:

Oct. 05, 2016
Applicant:

Cadence Design Systems, Inc., San Jose, CA (US);

Inventors:

Mathieu Gagnon, Verdun, CA;

Santiago Luis Bortman, Chevy Chase, MD (US);

Eric Harris Naviasky, Ellicott City, MD (US);

Guillaume Fortin, Montreal, CA;

Julien Faucher, Montreal, CA;

Assignee:

CADENCE DESIGN SYSTEMS, INC., San Jose, CA (US);

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F 1/12 (2006.01); H03K 5/24 (2006.01); G11C 27/02 (2006.01); H04L 25/06 (2006.01);
U.S. Cl.
CPC ...
H04L 25/062 (2013.01); G06F 1/12 (2013.01); G11C 27/02 (2013.01); H03K 5/24 (2013.01);
Abstract

A system and a method for detecting a low-frequency periodic signal (LFPS) include at least one comparator performing a threshold comparison on an analog input signal over a period of time. A sampling circuit generates digital signals by sampling an output of the at least one comparator. A digital detection circuit applies a set of detection rules to the digital signals. The detection rules are configured to detect a presence or an absence of an LFPS based on predefined criteria concerning characteristics of the digital signals.


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