Patents by Inventor Fagen Zhou

Fagen Zhou 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).

  • GPS and WLAN hybrid position determination
    Patent number: 9642110
    Abstract: The present disclosure provides a method for determining a real-time position of a mobile device using a global positioning system (GPS) and wireless local area network (WLAN) hybrid positioning mode. The method includes determining, by a mobile device, the mobile device's environment area based on GPS satellite signals; determining an absolute position of the mobile device based on the GPS satellite signals while the mobile device is moving from an outdoor area to an indoor area; estimating a reference position of the mobile device based on the determined absolute position and WLAN access point signals while moving to a shadow area; and while moving to an indoor area, determining an estimated position of the mobile device based on calculated regressive coefficients and the WLAN access point signals, and updating the estimated position of the mobile device based on motion information and indoor floor map information.
    Type: Grant
    Filed: April 15, 2014
    Date of Patent: May 2, 2017
    Assignee: Marvell World Trade Ltd.
    Inventors: BoChih Liu, Zhike Jia, Fagen Zhou, Jian Chen, Jing Yu, Xing Zhao
  • GPS AND WLAN HYBRID POSITION DETERMINATION
    Publication number: 20140335887
    Abstract: The present disclosure provides a method for determining a real-time position of a mobile device using a global positioning system (GPS) and wireless local area network (WLAN) hybrid positioning mode. The method includes determining, by a mobile device, the mobile device's environment area based on GPS satellite signals; determining an absolute position of the mobile device based on the GPS satellite signals while the mobile device is moving from an outdoor area to an indoor area; estimating a reference position of the mobile device based on the determined absolute position and WLAN access point signals while moving to a shadow area; and while moving to an indoor area, determining an estimated position of the mobile device based on calculated regressive coefficients and the WLAN access point signals, and updating the estimated position of the mobile device based on motion information and indoor floor map information.
    Type: Application
    Filed: April 15, 2014
    Publication date: November 13, 2014
    Applicant: Marvell World Trade Ltd.
    Inventors: BoChih Liu, Zhike Jia, Fagen Zhou, Jian Chen, Jing Yu