Patents by Inventor Randell C. Frost

Randell C. Frost 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).

  • Modem powering method and apparatus
    Patent number: 5491721
    Abstract: A modem (106) is arranged with a power control circuit (113) for controlling the power flow to the modem, based on the modem's data activity. After initial data activity is established (303), the power control circuit monitors the modem to determine when the data activity ceases. When the power control circuit determines that modem activity is no longer present (305), it releases a power-control relay (114), thus powering-down the modem (307). The power control circuit then continues to monitor the modem to determine when data activity returns. When the power control circuit determines that modem activity has returned (309), it operates the power-control relay, thus powering-up the modem (311). Normal data activity now continues (313).
    Type: Grant
    Filed: February 23, 1994
    Date of Patent: February 13, 1996
    Assignee: Motorola, Inc.
    Inventors: Gurley D. Cornelius, Randell C. Frost