Patents by Inventor Peter McMahan

Peter McMahan 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 protecting a circuit module in a communication device
    Patent number: 6381477
    Abstract: A method for protecting a circuit module in a communication device includes first detecting whether a circuit module is present in the communication device. A next step includes measuring a supply voltage to the communication device. A next step includes comparing the supply voltage to a predetermined threshold voltage. When the supply voltage is below the threshold, a next step includes supplying normal functionality to the phone and returning to the comparing step. However, when the supply voltage is above the threshold, a next step includes powering down a connection to the SIM card to limit functionality of the communication device.
    Type: Grant
    Filed: November 5, 1999
    Date of Patent: April 30, 2002
    Assignee: Motorola, Inc.
    Inventors: Robert M. Johnson, Jr., Peter McMahan