Patents by Inventor Steven P. Shipton

Steven P. Shipton 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).

  • Method and apparatus for performing a time synchronization of a base site
    Patent number: 6185429
    Abstract: An unsynchronized base site (104) transmits a time synchronization request to a communication unit (110). A time synchronization error, or a timing offset, for the unsynchronized base site (104) is then determined and transmitted back to the unsynchronized base site (104) to enable the unsynchronized base site to synchronize itself. The time synchronization error is determined for the unsynchronized base site (104) based on the time difference of arrival of the signals received by the communication unit (110) from the base site (104) and at least one synchronized base site (101), the location of the communication unit (110), the location of the base site (104), and the location of the at least one synchronized base site (101).
    Type: Grant
    Filed: July 31, 1998
    Date of Patent: February 6, 2001
    Assignee: Motorola, Inc.
    Inventors: James K. Gehrke, Timothy J. Groch, Steven P. Shipton, Mark G. Spiotta