Patents Represented by Attorney, Agent or Law Firm Don Kordich
  • Patent number: 6665539
    Abstract: The present invention is a novel and improved method and apparatus for performing position location in wireless communications system. One embodiment of the invention comprises a method of performing position location in a wireless subscriber unit having a local oscillator, including the steps of receiving a position location request, acquiring a timing signal when a sufficient period of time has elapsed since the local oscillator has been corrected and correcting the local oscillator using a correction signal based on the timing signal, substantially freezing the correction signal, performing a position location procedure using the local oscillator with the correction signal applied, and ending said position location procedure.
    Type: Grant
    Filed: February 1, 2001
    Date of Patent: December 16, 2003
    Assignee: Qualcomm Inc.
    Inventors: Gilbert C. Sih, Qiuzhen Zou
  • Patent number: 5754141
    Abstract: A wireless communication device (20) provides a matching state between a radio circuit (28) and an antenna assembly (26) in both its retracted and extended positions, and does so with an elegant design that increases reliability and manufacturability by reducing the number and complexity of components and moving mechanical parts. A matching circuit (30), which is reconfigured according to a switch (32) that is responsive to the antenna's position, provides the matching states.
    Type: Grant
    Filed: October 27, 1997
    Date of Patent: May 19, 1998
    Assignee: Motorola, Inc.
    Inventors: David C. Thompson, Jin D. Kim, Brian J. Hassemer