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. 04, 2022
Filed:
Sep. 28, 2018
Applicant:
Leviton Manufacturing Co., Inc., Melville, NY (US);
Inventors:
Michael Ostrovsky, Melville, NY (US);
Ozgur Keser, Melville, NY (US);
Assignee:
LEVITON MANUFACTURING CO., INC., Melville, NY (US);
Primary Examiner:
Int. Cl.
CPC ...
H05B 47/10 (2020.01); H05B 45/31 (2020.01); H05B 39/04 (2006.01); H05B 41/392 (2006.01);
U.S. Cl.
CPC ...
H05B 47/10 (2020.01); H05B 39/044 (2013.01); H05B 41/392 (2013.01); H05B 45/31 (2020.01);
Abstract
A zero-crossing detection method, and devices incorporating the method, enable a selectively enabled bias to pull-up a zero-crossing signal, thereby enabling monitoring of the zero-crossing of both half-cycles of the alternating current (AC). This improves synchronization of the device in noisy environments and enables the detection of dimming problems during either half-cycle. Aspects can detect improper dimmer firing events on either polarity of the power cycle and restore normal dimmer operations when needed.