Patents by Inventor Margaret Tam

Margaret Tam 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).

  • Managing moving wireless access points in wireless network positioning system
    Patent number: 11381982
    Abstract: An example method includes obtaining a plurality of data items. Each data item includes an indication of a particular location, an indication that a wireless signal from a first access point was observed at that location, and an indication of a time at which the wireless signal from the first access point was observed at that location. The method also includes determining a locational stability of the first access point based on the data items. Determining the locational stability of the first access point includes clustering the plurality of data items into one or more clusters based on the locations indicated in the plurality of data items, determining whether the N most recent data items are associated with a common cluster, and determining whether a time span between the N most recent data items exceeds a threshold period of time.
    Type: Grant
    Filed: October 15, 2020
    Date of Patent: July 5, 2022
    Assignee: Apple Inc.
    Inventors: Margaret Tam, David Benjamin Millman, Brian Stephen Smith, Benjamin A. Detwiler
  • MANAGING MOVING WIRELESS ACCESS POINTS IN WIRELESS NETWORK POSITIONING SYSTEM
    Publication number: 20210044986
    Abstract: An example method includes obtaining a plurality of data items. Each data item includes an indication of a particular location, an indication that a wireless signal from a first access point was observed at that location, and an indication of a time at which the wireless signal from the first access point was observed at that location. The method also includes determining a locational stability of the first access point based on the data items. Determining the locational stability of the first access point includes clustering the plurality of data items into one or more clusters based on the locations indicated in the plurality of data items, determining whether the N most recent data items are associated with a common cluster, and determining whether a time span between the N most recent data items exceeds a threshold period of time.
    Type: Application
    Filed: October 15, 2020
    Publication date: February 11, 2021
    Inventors: Margaret Tam, David Benjamin Millman, Brian Stephen Smith, Benjamin A. Detwiler