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:
Oct. 10, 2017
Filed:
Jan. 27, 2014
Applicant:
Sigma Designs Israel S.d.i. Ltd, Tel Aviv, IL;
Inventors:
Danny Braunshtein, Kochav Yair, IL;
Alex Akselrod, Rishon Lezion, IL;
Assignee:
Sigma Designs Israel S.D.I. Ltd., Tel Aviv, IL;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04B 3/54 (2006.01);
U.S. Cl.
CPC ...
H04B 3/542 (2013.01); H04B 3/548 (2013.01); H04B 2203/542 (2013.01); H04B 2203/547 (2013.01);
Abstract
An alternating current (AC) zero-crossing indicator apparatus including a current adjusting circuit for adjusting a DC signal current for a duration of time the same as the duration of a received zero-crossing detection signal. The zero-crossing indicator apparatus additionally includes a voltage retainer for maintaining a constant DC voltage applied to a connected load during the adjusting of the DC signal current. Also included is a zero-crossing sensor for generating a zero-crossing indication signal responsive to sensing of the adjusting of the DC signal current.