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.:

US 9494626 B1

PDF
Full Text
Expired
Date of Patent:
Nov. 15, 2016

Filed:

Jun. 03, 2015
Applicant:

Yazaki Corporation, Tokyo, JP;

Inventor:

Kazuhisa Wataru, Makinohara, JP;

Assignee:

YAZAKI CORPORATION, Tokyo, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03K 5/19 (2006.01); G01R 23/02 (2006.01); H03K 17/56 (2006.01);
U.S. Cl.
CPC ...
G01R 23/02 (2013.01); H03K 17/56 (2013.01); Y02T 10/40 (2013.01);
Abstract

A constant period signal monitoring circuit for monitoring a constant period signal that is output periodically when a control processor operating according to a program is normal, includes a signal input terminal that receives the constant period signal, an edge detection section that detects a change of the constant period signal appearing at the signal input terminal from a low level to a high level or from a high level to a low level as an edge of the constant period signal, and a time measuring section that measures a length of the time during which a state of not detecting the edge continues on the basis of an output of the edge detection section and outputs an abnormality detection signal in a case that the measured time exceeds a threshold value.


Find Patent Forward Citations

Wataru, Kazuhisa. (2016). Constant period signal monitoring circuit and load control backup signal generating circuit (U.S. Patent No. 9494626). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9494626

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