Patents by Inventor Junhui Fei

Junhui Fei has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • System and method for driving light emitting diodes
    Patent number: 9516723
    Abstract: A system having an alternating current (AC) driven LED unit, an AC voltage regulator, and a controller is provided. The AC driven LED unit includes a first LED and a second LED coupled in reverse parallel. The AC voltage regulator is operable to receive AC voltage originating from an AC voltage source, regulate the AC voltage according to control signals from the controller, and apply regulated AC voltage to the AC driven LED unit, so as to enable the first LED and the second LED to emit light according to the regulated AC voltage. In addition, a method is provided for driving the LED by regulating the AC voltage. By regulating the AC voltage using the AC voltage regulator, benefits of restraining voltage fluctuations, reducing THD, improving power factor, providing dimming control, and mitigating flicker phenomenon can be achieved.
    Type: Grant
    Filed: June 14, 2011
    Date of Patent: December 6, 2016
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Saijun Mao, Yunfeng Liu, Xiaoming Yuan, Yingqi Zhang, Charles Adrian Becker, Junhui Fei, Jian Wang
  • SYSTEM AND METHOD FOR DRIVING LIGHT EMITTING DIODES
    Publication number: 20130119882
    Abstract: A system having an alternating current (AC) driven LED unit, an AC voltage regulator, and a controller is provided. The AC driven LED unit includes a first LED and a second LED coupled in reverse parallel. The AC voltage regulator is operable to receive AC voltage originating from an AC voltage source, regulate the AC voltage according to control signals from the controller, and apply regulated AC voltage to the AC driven LED unit, so as to enable the first LED and the second LED to emit light according to the regulated AC voltage. In addition, a method is provided for driving the LED by regulating the AC voltage. By regulating the AC voltage using the AC voltage regulator, benefits of restraining voltage fluctuations, reducing THD, improving power factor, providing dimming control, and mitigating flicker phenomenon can be achieved.
    Type: Application
    Filed: June 14, 2011
    Publication date: May 16, 2013
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Saijun Mao, Yunfeng Liu, Xiaoming Yuan, Yingqi Zhang, Charles Adrian Becker, Junhui Fei, Jian Wang