Patents by Inventor Eugene A. Madison, Jr.

Eugene A. Madison, Jr. 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).

  • Audible warning prior to losing cell call in progress
    Patent number: 6330438
    Abstract: In a cellular telephone system, as the strength of the signal between a cell site and a mobile unit weakens in the absence of another cell site to hand off the mobile unit to, the mobile unit user is warned of the impending loss of the call before it occurs. This allows the user sufficient time to take precautionary steps such as moving or re-orienting the hand-held mobile unit to compensate for the loss of signal strength and maintain integrity of the communications link. The mobile unit user is warned of a signal level reduction below a predetermined threshold by means of an audible tone emitted by the mobile unit's earpiece prior to loss of a call in progress.
    Type: Grant
    Filed: September 29, 1999
    Date of Patent: December 11, 2001
    Assignee: Lucent Technologies Inc.
    Inventors: Linda K. McClelland, Eugene A. Madison, Jr.