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:
Dec. 12, 2017
Filed:
Jul. 25, 2016
Applicant:
Marvell International Ltd., Hamilton, BM;
Inventors:
Yupeng Chen, Singapore, SG;
Edy Susanto, Singapore, SG;
Assignee:
Marvell International Ltd., Hamilton, BM;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H05B 33/08 (2006.01); H03K 7/08 (2006.01);
U.S. Cl.
CPC ...
H05B 33/0845 (2013.01); H03K 7/08 (2013.01); H05B 33/083 (2013.01); H05B 33/0815 (2013.01); H05B 33/0839 (2013.01);
Abstract
A method of controlling a dimmable light emitting diode (LED) system includes defining two or more dimming regions having respective dimming levels applied to one or more strings of LEDs, continuously supplying a current to the one or more strings of LEDs in a first dimming region, and maintaining an average peak value of the current substantially the same and adjusting a duty cycle of a pulse width modulation (PWM) control signal in a second dimming region to supply the current according to the PWM control signal.