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. 22, 2015
Filed:
Apr. 25, 2013
Applicant:
Seoul Semiconductor Co., Ltd., Ansan-si, KR;
Inventors:
Hye Man Jung, Ansan-si, KR;
Hyun Gu Kang, Ansan-si, KR;
Jin Cheol Shin, Ansan-si, KR;
Sang Wook Han, Ansan-si, KR;
Assignee:
Seoul Semiconductor Co., Ltd., Ansan-si, KR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H05B 41/36 (2006.01); H05B 33/08 (2006.01);
U.S. Cl.
CPC ...
H05B 33/0845 (2013.01); H05B 33/0815 (2013.01); H05B 33/0824 (2013.01); Y02B 20/343 (2013.01); Y02B 20/346 (2013.01);
Abstract
A light-emitting diode (LED) dimmer for an LED lighting device, including a power switch, a drive voltage supply, and a LED light-emitting unit. Operating zones of the LED lighting device are changed in accordance with the switching of the power switch, and a dimming level for a next operating zone is determined on the basis of the dimming level and time while the power switch was on during the previous operating period.