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:
Feb. 09, 2021
Filed:
Apr. 22, 2019
Applicant:
Ablic Inc., Chiba, JP;
Inventor:
Minoru Ariyama, Chiba, JP;
Assignee:
ABLIC INC., Chiba, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01B 7/30 (2006.01); G01D 5/14 (2006.01);
U.S. Cl.
CPC ...
G01D 5/145 (2013.01);
Abstract
A zero cross detection circuit has a first comparator circuit receiving a first input signal nand a second input signal nand outputting a first comparison result, a second comparator circuit having a hysteresis, receiving the first input signal nand the second input signal n, and providing a second comparison result, and a logic circuit providing a zero cross detection signal based on the first comparison result and the second comparison result. The logic circuit provides a reverse signal to the second comparator circuit based on the first comparison result and the second comparison result.