Patents by Inventor Rex Allen Nisbet

Rex Allen Nisbet 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).

  • Group calls in a mobile radio system
    Patent number: 7649893
    Abstract: A method of arbitrating group calls in a digital mobile radio system without need of a central component. In general terms the base station that are serving mobile units in a call each announce the nature of the signals that they are receiving. The stations then each compare the signals and decide which signal will be broadcast to the mobile units. The signals are preferably transmitted between base stations via a packet network using IP multicast.
    Type: Grant
    Filed: July 4, 2003
    Date of Patent: January 19, 2010
    Assignee: Tait Electronics Limited
    Inventor: Rex Allen Nisbet