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:
Nov. 22, 2016
Filed:
Mar. 21, 2014
Minjong Kim, San Jose, CA (US);
Weifeng Chen, San Jose, CA (US);
Jungung Kim, San Jose, CA (US);
Jae Hong Jeong, Saratoga, CA (US);
Kyeongtae Moon, San Ramon, CA (US);
Minjong Kim, San Jose, CA (US);
Weifeng Chen, San Jose, CA (US);
Jungung Kim, San Jose, CA (US);
Jae Hong Jeong, Saratoga, CA (US);
Kyeongtae Moon, San Ramon, CA (US);
Altoran Chips & Systems, Santa Clara, CA (US);
Abstract
An AC light system with a control unit for controlling power of an LED is disclosed. According to one embodiment, a driver circuit for driving LEDs has a plurality of current sinks, a first interface configured to receive an AC power from an AC power source, a second interface to a plurality LED groups. The driver circuit further has a third interface configured to receive a control input from a control unit. Each current sink of the plurality of current sinks controls an LED current flowing through a corresponding LED group based on the control input from the control unit.