Patents by Inventor John Mistro

John Mistro 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 of avoiding audio truncation in trunked systems
    Publication number: 20070254645
    Abstract: A method and apparatus are provided for reducing audio truncation during a call in a trunked radio system. The method includes the steps of providing a multicast IP address of a rendezvous point to a first participant of the call to forward multicast audio of the call to a second participant of the call and using a dummy host to add an IP address for the second participant to the multicast IP address of the rendezvous point.
    Type: Application
    Filed: April 26, 2006
    Publication date: November 1, 2007
    Inventor: John Mistro
  • Method of registration in a communication system
    Patent number: 6411816
    Abstract: A method of registration in a communication system includes the steps of detecting (201) an elevated registration level of at least a part of a communication system, selecting (203) a group recovery time, determining (205) a first random registration time that is less than or equal to the group recovery time, registering (209) a first communication unit (111) from a first talkgroup at the first random registration time, and upon receiving (212) a group activity message for the first talkgroup, delaying (213) registration by at least a second communication unit (113) from the first talkgroup.
    Type: Grant
    Filed: June 19, 2000
    Date of Patent: June 25, 2002
    Assignee: Motorola, Inc.
    Inventors: Daniel J. McDonald, Marc Cassidy, Randy L. Ekl, John Mistro, Erick Loven