Patents by Inventor Wuzhou Zhang

Wuzhou Zhang 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).

  • Patent number: 10545231
    Abstract: Embodiments are disclosed for compressing radio maps of fingerprint-based positioning systems using different compression models. In an embodiment, a method comprises: receiving, by a computing device, access point (AP) data from a plurality of mobile devices operating in a geographic region, the AP data including signal strength measurements of AP signals received at a plurality of reference locations in the geographic region and uncertainty measurements associated with the signal strength measurements; determining a level of accuracy with the first compression model; responsive to the determining, selecting one of the first compression model or a second compression model to compress the AP data, the second compression model being different than the first compression model; compressing the AP data using the selected compression model; and responsive to a request from a mobile device operating in the geographic region, sending a data packet including the compressed AP data to the mobile device.
    Type: Grant
    Filed: September 28, 2018
    Date of Patent: January 28, 2020
    Assignee: Apple Inc.
    Inventors: Wuzhou Zhang, Benjamin A. Detwiler, David Benjamin Millman, Jasvinder Singh, Anders M. Holtsberg, Darin Tay
  • Publication number: 20190137621
    Abstract: Embodiments are disclosed for compressing radio maps of fingerprint-based positioning systems using different compression models. In an embodiment, a method comprises: receiving, by a computing device, access point (AP) data from a plurality of mobile devices operating in a geographic region, the AP data including signal strength measurements of AP signals received at a plurality of reference locations in the geographic region and uncertainty measurements associated with the signal strength measurements; determining a level of accuracy with the first compression model; responsive to the determining, selecting one of the first compression model or a second compression model to compress the AP data, the second compression model being different than the first compression model; compressing the AP data using the selected compression model; and responsive to a request from a mobile device operating in the geographic region, sending a data packet including the compressed AP data to the mobile device.
    Type: Application
    Filed: September 28, 2018
    Publication date: May 9, 2019
    Applicant: Apple Inc.
    Inventors: Wuzhou Zhang, Benjamin A. Detwiler, David Benjamin Millman, Jasvinder Singh, Anders M. Holtsberg, Darin Tay