Patents by Inventor John R. Ball

John R. Ball 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).

  • Repeater for TDMA mobile radio
    Patent number: 5200955
    Abstract: A repeater for enhancing performance of a TDMA mobile radio system in poor signal areas has a bank of frequency agile, single channel amplifiers (13), and controller (14). The controller (14) scans the channel of the band and, upon identifying a channel carrying traffic, enables one of the amplifier units (13) to operate on that channel. Each of the amplifier units (13) includes a time slot activity detector (35) for detecting which time slot of a channel is active. The output of the activity detector (35) is passed to a logic control module (36), which controls the amplification of an active time slot via a time slot gate and power unit (38).
    Type: Grant
    Filed: October 30, 1990
    Date of Patent: April 6, 1993
    Assignee: British Telecommunications public limited company
    Inventors: David A. McFarlane, John R. Ball