Patents by Inventor Daiwei Fan

Daiwei Fan 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).

  • Systems and methods for powering a light emitting diode lamp
    Patent number: 7834561
    Abstract: In one embodiment, the present invention includes an electronic circuit for providing a power current to an LED lamp. The electronic circuit comprises a logic drive circuit, a VCO, a power switch, and a first current sensor. The VCO is coupled to provide a first logic control signal to the logic drive circuit. The power switch has a first terminal and second terminal coupled to deliver the power current to the LED lamp and a control terminal coupled to receive a power control signal from the logic drive circuit. The first current sensor is coupled to sense a peak current passing through the power switch and coupled to provide a second logic control signal to the logic drive circuit.
    Type: Grant
    Filed: February 1, 2008
    Date of Patent: November 16, 2010
    Assignee: Pacific Tech Microelectronics
    Inventors: Vincent L. Fong, Yong You, Daiwei Fan, Jin Wang
  • Systems and Methods for Powering a Light Emitting Diode Lamp
    Publication number: 20090195190
    Abstract: In one embodiment, the present invention includes an electronic circuit for providing a power current to an LED lamp. The electronic circuit comprises a logic drive circuit, a VCO, a power switch, and a first current sensor. The VCO is coupled to provide a first logic control signal to the logic drive circuit. The power switch has a first terminal and second terminal coupled to deliver the power current to the LED lamp and a control terminal coupled to receive a power control signal from the logic drive circuit. The first current sensor is coupled to sense a peak current passing through the power switch and coupled to provide a second logic control signal to the logic drive circuit.
    Type: Application
    Filed: February 1, 2008
    Publication date: August 6, 2009
    Applicant: Pacific Tech Microelectronics, Inc.
    Inventors: Vincent L. Fong, Yong You, Daiwei Fan, Jin Wang