Patents by Inventor Pi-Chen Chui

Pi-Chen Chui 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).

  • Wireless positioning calibration system and wireless positioning calibration method
    Patent number: 10763978
    Abstract: Provided is a wireless positioning calibration system, including a plurality of transmission base stations, at least one sniffer base station and a positioning server. The at least one sniffer base station receives a plurality of channel state information (CSI) transmitted by the plurality of transmission base stations. The positioning server receives the plurality of CSI transmitted by the at least one sniffer base station. The positioning server calculates a phase error and an antenna spacing error generated by the at least one sniffer base station by means of the plurality of CSI, and compensates the phase error and the antenna spacing error. A wireless positioning calibration method is also provided.
    Type: Grant
    Filed: December 21, 2018
    Date of Patent: September 1, 2020
    Assignee: Industrial Technology Research Institute
    Inventors: Pi-Chen Chui, Ting-Wu Ho, Chia-Lung Liu
  • WIRELESS POSITIONING CALIBRATION SYSTEM AND WIRELESS POSITIONING CALIBRATION METHOD
    Publication number: 20200083965
    Abstract: Provided is a wireless positioning calibration system, including a plurality of transmission base stations, at least one sniffer base station and a positioning server. The at least one sniffer base station receives a plurality of channel state information (CSI) transmitted by the plurality of transmission base stations. The positioning server receives the plurality of CSI transmitted by the at least one sniffer base station. The positioning server calculates a phase error and an antenna spacing error generated by the at least one sniffer base station by means of the plurality of CSI, and compensates the phase error and the antenna spacing error. A wireless positioning calibration method is also provided.
    Type: Application
    Filed: December 21, 2018
    Publication date: March 12, 2020
    Inventors: Pi-Chen Chui, Ting-Wu Ho, Chia-Lung Liu