Patents by Inventor Dean E. Thorson

Dean E. Thorson 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 network-to-user verification of communication devices based on time
    Patent number: 6377792
    Abstract: A method and apparatus provides for a subscriber device (106) to signal changing from a first network to a second network including receiving via a transceiver (120) at the subscriber device (106) a time value from another network and generating from a clock (124) at the subscriber device (106) a current time value and then using a controller (126) deriving a delta time value between the time value and the current time value. The controller (126) signals the user when the delta time value between the time value and the current time value changes.
    Type: Grant
    Filed: October 22, 1999
    Date of Patent: April 23, 2002
    Assignee: Motorola, Inc.
    Inventors: Daniel P. Brown, Dean E. Thorson
  • Radiotelephone receiver and method with improved dynamic range and DC offset correction
    Patent number: 6321073
    Abstract: An automatic gain control apparatus (106) and method for a radiotelephone receiver employs stored inverse transfer function data (400) of the radiotelephone receiver and a gain estimation circuit (200). The gain estimation circuit (200) estimates the input power of received signal (103) and determines a required gain based on a nonlinear portion of the inverse transfer function data (400) of the radiotelephone receiver to provide an improved dynamic range of the receiver. The apparatus and method performs convergence within one iteration to perform fast gain control. In addition, if desired, a DC offset compensation circuit, such as a feedforward DC offset compensation circuit (202), compensates the digital representation of the input signal for use by the gain estimation circuit (200).
    Type: Grant
    Filed: January 31, 2000
    Date of Patent: November 20, 2001
    Assignee: Motorola, Inc.
    Inventors: Yuda Y. Luz, Ariel Luzzatto, Dean E. Thorson