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:
Jul. 17, 2012
Filed:
Jul. 27, 2010
Hyun Gu Kang, Ansan-si, KR;
DO Hyung Kim, Ansan-si, KR;
Sang Min Lee, Ansan-si, KR;
Yoon Seok Lee, Ansan-si, KR;
Hyun Gu Kang, Ansan-si, KR;
Do Hyung Kim, Ansan-si, KR;
Sang Min Lee, Ansan-si, KR;
Yoon Seok Lee, Ansan-si, KR;
Seoul Semiconductor Co., Ltd., Seoul, KR;
Abstract
Exemplary embodiments of the present invention relate to a dimmer for a light emitting device using an alternating (AC) voltage source. The dimmer includes a switch to be switched in response to a switching control signal and to deliver an AC voltage of an AC voltage source to the light emitting device, a current detector to detect an electric current to be provided to the light emitting device and to output a current detection signal, and a controller to output the switching control signal in response to a dimming control signal and the current detection signal.