Patents by Inventor Quansong Wu

Quansong Wu 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).

  • Ignition control apparatus used in electronic ballast and method thereof
    Patent number: 8593080
    Abstract: The present invention is generally related to an electronic ballast, an ignition control apparatus used therein and associated method of operation. In one embodiment, an electronic ballast comprising an inverter and an ignition control apparatus which comprises a stability monitoring circuit and a controlled ignition circuit. The inverter converts a DC input voltage into an AC voltage to drive a gas discharge lamp. The stability monitoring circuit monitors whether the DC input voltage is stable. The controlled ignition circuit is electrically coupled to the stability monitoring circuit and the lamp, ignites the lamp based on the monitoring result. The controlled ignition circuit does not ignite the gas discharge lamp until the DC input voltage becomes stable.
    Type: Grant
    Filed: April 15, 2011
    Date of Patent: November 26, 2013
    Assignee: Zhejiang Dabong Technology Co., Ltd.
    Inventors: Jin Hu, Qing Xu, Quansong Wu
  • IGNITION CONTROL APPARATUS USED IN ELECTRONIC BALLAST AND METHOD THEREOF
    Publication number: 20120001565
    Abstract: The present invention is generally related to an electronic ballast, an ignition control apparatus used therein and associated method of operation. In one embodiment, an electronic ballast comprising an inverter and an ignition control apparatus which comprises a stability monitoring circuit and a controlled ignition circuit. The inverter converts a DC input voltage into an AC voltage to drive a gas discharge lamp. The stability monitoring circuit monitors whether the DC input voltage is stable. The controlled ignition circuit is electrically coupled to the stability monitoring circuit and the lamp, ignites the lamp based on the monitoring result. The controlled ignition circuit does not ignite the gas discharge lamp until the DC input voltage becomes stable.
    Type: Application
    Filed: April 15, 2011
    Publication date: January 5, 2012
    Inventors: Jin Hu, Qing Xu, Quansong Wu